Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo qualit...Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo quality.Methods:In this study,359 embryos from 62 couples were screened for chromosomes 13,21,18,X,and Y by fluorescence insitu hybridization.For biopsy of blastomere,a laser was used to remove a significantly smaller portion of the zona pellucida.One blastomere was gently biopsied by an aspiration pipette through the hole.After biopsy,the embryo was immediately returned to the embryo scope until transfer.Embryo integrity and blastocyst formation were assessed on day 5.Results:Totally,282 embryos from 62 couples were evaluated.The chromosomes were normal in 199(70.57%)embryos and abnormal in 83(29.43%)embryos.There was no significant association between the quality of embryos and numerical chromosomal abnormality(P=0.67).Conclusions:Embryo quality is not significantly correlated with its genetic status.Hence,the quality of embryos determined by morphological parameters is not an appropriate method for choosing embryos without these abnormalities.展开更多
Background and Purpose: A growing number of couples/partners have been undergoing assisted reproductive technology (ART) in Japan. The purpose of this study was to clarify the support from healthcare professionals bas...Background and Purpose: A growing number of couples/partners have been undergoing assisted reproductive technology (ART) in Japan. The purpose of this study was to clarify the support from healthcare professionals based on the support vectors in the Family Care/Caring Theory proposed by Hohashi (2015) through a literature review. Methods: Using Ichushi-Web, we searched for original articles using the keywords “assisted reproductive technology”, “infertility”, “family”, “couple”, “nursing”, “care”, and “support”. Thirteen articles suitable for the purpose of this study were subjected to content analysis. Family support was encoded and grouped into subcategories and categories, and classified according to support vectors. Results: A total of 21 categories of support from healthcare professionals was extracted. Intervention for family internal environment included seven categories, such as “Nursing professionals stay close to females”. Intervention for family system unit included five categories, such as “Nursing professionals adjust couple/partner relationships”. Intervention for micro system only included “Nursing professionals provide opportunities for peer support to the couples/partners” and intervention for macro system only included “Nursing professionals encourage medical doctors to relate to females”. Intervention for family chrono environment included seven categories, such as “Healthcare professionals resolve female’s anxieties”. Conclusion: The support from healthcare professionals could be organized by the support vectors of Family Care/Caring Theory, but intervention for supra system (culture, religion, etc.) was lacking. Moreover, because most support was directed toward females or couples/partners, male-focused direct and/or indirect support are also needed. .展开更多
The scope of this review is to focus on the management of benign ovarian cyst in the reproductive-age group of women undergoing ART. Ovarian cysts are a common occurrence in this patient population. The differential d...The scope of this review is to focus on the management of benign ovarian cyst in the reproductive-age group of women undergoing ART. Ovarian cysts are a common occurrence in this patient population. The differential diagnosis includes functional cysts, dermoid cysts, endometrioma. The appropriate evaluation includes medical history and physical examination, laboratory tests and imaging. The treatment options include conservative follow-up, medical treatment and surgery. This review will explore the differential diagnosis, appropriate work-up and treatment options to the various cyst types encountered.展开更多
Since 1992, assisted reproductive technology (ART) has been reported as a viable means of helping HIV-1 serodiscordant couples achieve pregnancy while theoretically reducing the risk for viral transmission. While th...Since 1992, assisted reproductive technology (ART) has been reported as a viable means of helping HIV-1 serodiscordant couples achieve pregnancy while theoretically reducing the risk for viral transmission. While the sum of the evidence suggests that ART is effective and safe, numerous controversies still exist, The follow- ing review addresses several of the important issues involved in the use of ART for HIV-serodiscordant couples, including patient selection, semen processing techniques, post-process HIV testing, the use of lUI vs IVF-ICSI.展开更多
Background: Involuntary infertility is a tragedy in most African setting. This is due to premium placed on fertility as a result of roles children fulfill in the family and the society. Aetiologic factors of infertili...Background: Involuntary infertility is a tragedy in most African setting. This is due to premium placed on fertility as a result of roles children fulfill in the family and the society. Aetiologic factors of infertility in sub-Saharan Africa are mostly infection related and they are mainly associated with poor treatment outcome to conventional non assisted conception technique. Objective: To evaluate the level of awareness and perception of assisted conception treatment among women attending fertility clinic. Methods: A descriptive cross-sectional study. Results: One hundred and ninety six women attending fertility clinic were interviewed. Mean age was 34.8year and mean duration of infertility of 4.1 years. Of the 196 infertile women interviewed, 150 (76.5%) have heard of Assisted Reproductive Technology treatment. Sources of information were mainly family relation (46%) and friends (28.7%). Knowledge on some of Assisted Reproductive Technology practices showed that 50.7% were aware that the treatment could fail, 36.8% knew it could be applied for male infertility treatment, 9.3% and 18.7% respectively are aware that donor oocyte and sperm could be used for treatment. Perception on babies conceived from assisted conception treatment revealed that 52% of patients interviewed could not comment if they are normal and natural babies. Majority of patients could not affirm if they will agree to the use of donor gamete or zygote for their treatment. Conclusion: Awareness of assisted conception treatment was high, however knowledge on specifics of treatment was low and perception on some of the practices was unfavorable. Sensitization of the public will help overcome some beliefs that may be at tangent to some practices of assisted conception.展开更多
Objective: To assess the secondary sex ratio (SSR) of assisted reproduction technology babies within a fertility clinic in Melbourne, Australia. Methods: A retrospective cohort study was conducted on 3369 babies who w...Objective: To assess the secondary sex ratio (SSR) of assisted reproduction technology babies within a fertility clinic in Melbourne, Australia. Methods: A retrospective cohort study was conducted on 3369 babies who were born following single embryo transfer between 2011 and 2016. Variables examined included embryo creation date, maternal and paternal ages, maternal body mass index (BMI), type of infertility, sperm parameters, fertilization method, type of embryo and stage of transfer. Multivariate regression analysis was performed on the data set using STRATA V9.2. Results: More males were found to be born to embryos created in summer (adjusted odds ratio=1.46, 95% confidence interval: 1.08-1.95;P=0.01). Lower BMI of mother (≤30 kg/m 2) and younger age of parents (≤35 years) were associated with an increase in SSR (50.1% vs. 47.1%;50.6% vs. 48.8%;50.0% vs. 48.9%) respectively. Decreased SSR value was associated with primary subfertility, using in-vitro fertilization procedure and fresh embryo compared to those with secondary subfertility, using intracytoplasmic sperm injection procedure and thawed embryo (49.3% vs. 50.6%;47.1% vs. 50.8%;49.4% vs. 50.1%) respectively. Conclusions: The fertilization methods, type of embryo, stage of embryo transfer, parameters of the sperm and status of subfertility do not significantly affect the SSR. SSR is affected by the seasonality, maternal age, and BMI.展开更多
Objective: To explore the potential predictors of a live birth (LB) outcome among subfertile couples of Asian ethnicity undergoing the first fertility treatment cycle;to assess the cumulative live birth rates after su...Objective: To explore the potential predictors of a live birth (LB) outcome among subfertile couples of Asian ethnicity undergoing the first fertility treatment cycle;to assess the cumulative live birth rates after successive cycles;and to determine the incidence rate of spontaneous conception (SC).Methods:Subfertile couples were grouped according to treatment modalities at the first fertility treatment cycle: intrauterine insemination (IUI),in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI) and no treatment, and were followed-up for duration up to seven years. Multivariable logistic regression analysis was used for statistical analyses. Results: Age of female subjects [35-38 years, odds ratio (OR): 0.39;≥39 years, OR: 0.14], uterine factor subfertility (OR: 5.24), and treatment modalities (ORs: IUI 0.25, IVF 2.33 and ICSI 1.91) significantly predicted a LB outcome (P<0.05). The cumulative live birth rates were 11.7% IUI, 41.5% IVF, 27.5% ICSI and 22.6% from frozen embryo transfer cycles. The cumulative SC rate was 24.6% in the non-treated group and 10.7% in the treated group. All LBs from IVF cycles were delivered by the second cycle and within four years, compared to SC delivery of within five years in the non-treated group and six years in the treated group. Conclusions:Age of female subject, uterine factor and modalities of treatment are significant predictors for LB outcome at the first cycle. Higher delivery rates could be achieved following fewer successive IVF cycles and within a shorter duration compared to SC.展开更多
The objective was to assess the outcome of pregnancies after assisted reproductive technology (ART). It was a case-control study carried out in four health facilities in Douala-Cameroon, over a period of five years. T...The objective was to assess the outcome of pregnancies after assisted reproductive technology (ART). It was a case-control study carried out in four health facilities in Douala-Cameroon, over a period of five years. The cases were pregnant women who conceived through ART and the controls were those who conceived naturally. Cases and controls were matched for maternal age and parity (one case for two controls). A logistic regression analysis was used to compute Odds ratios. Statistical significance was set at 0.05. A total of 174 women who conceived through ART and 348 who conceived naturally were enrolled. Some independent factors associated with ART were: age over 45 years [aOR:</span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">7.55;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">(1.55 - 36.76);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], twin pregnancies [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">16.55;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (7.91 - 34.60);p < 0.01], Cervical cerclage [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3.04;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95% CI (1.23 - 7.50);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], miscarriages [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">11.73;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (5.07 - 27.10);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], elective cesarean section [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">4.63;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (2.27 - 9.45);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01] and low birth weight [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3.32;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (1.90 - 5.82);p < 0.01]. Women who conceived by ART were older with higher rates of multiple pregnancy and complications. We recommend transfer of a single embryo.展开更多
<strong>Background: </strong>This study aims to evaluate the infertility reflection in early pregnancy after assistive reproductive therapy (ART), including 1) process evaluation (the use and evaluation of...<strong>Background: </strong>This study aims to evaluate the infertility reflection in early pregnancy after assistive reproductive therapy (ART), including 1) process evaluation (the use and evaluation of infertility reflection) and 2) outcome evaluation (satisfaction of care needs, anticipatory anxiety towards the loss of a pregnancy or fetus, cognition of infertility experience, and depression and anxiety). <strong>Methods: </strong>This program evaluation study used a one-group pre-post-test design. The participants were 50 primiparas who had undergone ART at two fertility treatment facilities in a metropolitan area in Japan. For the infertility reflection, they conducted an online reflection. Data were collected three times: at the 5th week of pregnancy (Time 1), the 8th week of pregnancy as the final consultation at the clinic (Time 2), and the 16th week of pregnancy as the final point of early pregnancy (Time 3). <strong>Results: </strong>The data from 40 participants were analyzed. More than 80% of the users of the online reflection positively evaluated the appropriateness and usefulness of the methods and contents. Organized thoughts and feelings by reflection were shown as the reasons for the usefulness. The evaluation of the online reflection showed a relatively strong correlation with the Care Need Satisfaction Scale (CNSS) for both Time 2 and Time 3, but the online reflection did not show a significant correlation with the other outcome variables. There were no significant differences in outcome variables between users and non-users of online reflection between Time 2 and Time 3. <strong>Conclusions:</strong> Attempts at the reflection in early pregnancy require modified methods that do not have a negative impact and lead to the fulfillment of needs.展开更多
Objective:To investigate the incidence of neonatal birth defects in assisted reproductive technology(ART)by in vitro fertilization(IVF)and intracytoplasmic sperm injection(ICSI).Methods:The clinical data of 4229 cases...Objective:To investigate the incidence of neonatal birth defects in assisted reproductive technology(ART)by in vitro fertilization(IVF)and intracytoplasmic sperm injection(ICSI).Methods:The clinical data of 4229 cases of singleton deliver by infertile patients under 35 years old who received IVF/ICSI-ET in our center were analyzed.According to different fertilization methods,they were divided into IVF group(2967 cases)and ICSI group(1262 cases).The general situation of birth,birth defects and the location of defects were compared between the two groups.Results:a total of 38 cases of neonatal birth defects were found,the incidence of birth defects was 0.89%,including 30 cases(1.01%)in IVF group and 8 cases(0.64%)in ICSI group.There was no significant difference in the incidence of birth defects between the two groups(P>0.05).There was also no significant difference in birth weight,gestational age and gender ratio between the two groups(P>0.05).Conclusion:Different fertilization methods in assisted reproductive technology do not increase the incidence of neonatal birth defects.展开更多
Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservat...Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservation crisis,major Russian institutions collaborated in a dynamic program to develop and implement RTs for the sustainable management of amphibian biodiversity.An initial primary focus was the captive breeding of threatened Russian endemic anuran and caudate species,using RTs that varied from environmental manipulation to the use of exogenous gonadotropic hormones to stimulate reproduction.These species were mostly from Palearctic or cool mountain regions,but also included a wide range of species from warm regions.Other early achievements included the successful cryopreservation of anuran spermatozoa and anuran diploid pluripotent cell nuclei,in order to store both the matrilineal and patrilineal genomes in biobanks,with their subsequent development to the blastula stage after implantation into enucleated oocytes.After the turn of the 21st Century,in support of the priorities of the Amphibian Conservation Action Plan(2007),we developed RTs for the refrigerated storage of testicular or urinary spermatozoa for days to weeks at 4℃,the cryopreservation of urinary spermatozoa using anovel cryoprotectant,the in vitro fertilisation of hormonally induced oocytes either fresh or after refrigerated ex situ or in situ storage,and the artificial insemination of salamanders with fresh spermatozoa.In this article,we describe previously unpublished techniques and techniques from obscure Russian sources.展开更多
Many advances in genetic selection, nutrition, housing and disease control have been incorporated into modern pork production since the 1950s resulting in highly prolific females and practices and technologies, which ...Many advances in genetic selection, nutrition, housing and disease control have been incorporated into modern pork production since the 1950s resulting in highly prolific females and practices and technologies, which significantly increased efficiency of reproduction in the breeding herd. The objective of this manuscript is to review the literature and current industry practices employed for reproductive management. In particular the authors focus on assisted reproduction technologies and their application for enhanced productivity. Modern maternal line genotypes have lower appetites and exceptional lean growth potential compared to females of 20 yr ago. Thus, nutrient requirements and management techniques and technologies, which affect gilt development and sow longevity, require continuous updating. Failure to detect estrus accurately has the greatest impact on farrowing rate and litter size. Yet, even accurate estrus detection will not compensate for the variability in the interval between onset of estrus and actual time of ovulation. However, administration of GnRH analogs in weaned sows and in gilts after withdrawal of altrenogest do overcome this variability and thereby synchronize ovulation, which makes fixed-time AI practical. Seasonal infertility, mediated by temperature and photoperiod, is a persistent problem. Training workers in the art of stockmanship is of increasing importance as consumers become more interested in humane animal care. Altrenogest, is used to synchronize the estrous cycle of gilts, to prolong gestation for 2-3 d to synchronize farrowing and to postpone post-weaning estrus. P.G. 600~ is used for induction of estrus in pre-pubertal gilts and as a treatment to overcome seasonal anestrous. Sperm cell numbers/dose of semen is significantly less for post cervical AI than for cervical AI. Real-time ultrasonography is used to determine pregnancy during wk 3-5. PGF2a effectively induces farrowing when administered within two d of normal gestation length. Ovulation synchronization, single fixed-time AI and induced parturition may lead to farrowing synchronization, which facilitates supervision and reduces stillbirths and piglet mortality. Attendance and assistance at farrowing is important especially to ensure adequate colostrum consumption by piglets immediately after birth. New performance terminologies are presented.展开更多
Background:In vitro embryo production(IVP)and embryo transfer(ET)are two very common assisted reproductive technologies(ART)in human and cattle.However,in pig,the combination of either procedures,or even their use sep...Background:In vitro embryo production(IVP)and embryo transfer(ET)are two very common assisted reproductive technologies(ART)in human and cattle.However,in pig,the combination of either procedures,or even their use separately,is still considered suboptimal due to the low efficiency of IVP plus the difficulty of performing ET in the long and contorted uterus of the sow.In addition,the potential impact of these two ART on the health of the offspring is unknown.We investigated here if the use of a modified IVP system,with natural reproductive fluids(RF)as supplements to the culture media,combined with a minimally invasive surgery to perform ET,affects the output of the own IVP system as well as the reproductive performance of the mother and placental molecular traits.Results:The blastocyst rates obtained by both in vitro systems,conventional(C-IVP)and modified(RF-IVP),were similar.Pregnancy and farrowing rates were also similar.However,when compared to in vivo control(artificial insemination,AI),litter sizes of both IVP groups were lower,while placental efficiency was higher in AI than in RF-IVP.Gene expression studies revealed aberrant expression levels for PEG3 and LUM in placental tissue for C-IVP group when compared to AI,but not for RF-IVP group.Conclusions:The use of reproductive fluids as additives for the culture media in pig IVP does not improve reproductive performance of recipient mothers but could mitigate the impact of artificial procedures in the offspring.展开更多
There can be little argument that embryo quality is one of the most critical factors in the success of assisted reproductive techniques. Yet the current methods of grading embryos are subjective at best. While a numbe...There can be little argument that embryo quality is one of the most critical factors in the success of assisted reproductive techniques. Yet the current methods of grading embryos are subjective at best. While a number of different groups have described more qualitative means of assessing embryo quality, the current standard remains morphology. Morphology has proven a good standard, but it does not allow for the detection of chromosomal abnormalities nor can it assess the biochemical status of the embryo prior to transfer. This laboratory recently described a method to estimate embryo weight and suggested weight might be a good indicator of biochemical status. The objective of the present study was to determine the relationship between maternal body composition and embryo weight and determine the influence maternal chemistry had on embryo development. The data continue to suggest that maternal body composition, especially body fat, influences the chemical nature of the embryo and may play a critical role in long-term survival.展开更多
Assisted reproductive technology (ART) laboratories represent the marriage of the most basic of biological activities with the most cutting edge technologies. While this association has worked well, the mixture of bio...Assisted reproductive technology (ART) laboratories represent the marriage of the most basic of biological activities with the most cutting edge technologies. While this association has worked well, the mixture of biology and technology can create risks to normal embryo development. Recently a significant amount of literature has explored the risks of manmade, electrically induced magnetic fields and carrier waves on reproduction, which some studies have suggested will lower functional gamete numbers in the males and potentially induce genetic issues in embryos. However, little is known about these phenomena within the ART laboratory, a laboratory filled with electronic equipment. The object of the present study was to explore the potential exposure of gametes and early stage embryos to two of the most prevalent fields and waves utilized in manmade technologies seen in the general environment, electromagnetic fields (EMF) and radio frequency waves (RF), and determine the effect varying levels of these energetic forces had on gamete function and embryo development. Results indicated that while extremely high concentrations of EMF (approximately 50-100X of laboratory background) caused negative outcomes in both gametes and embryos, levels consistent will the majority of lab equipment did not appear to impact growth, or function. Further, even extremely high RF appeared to have no impact cellular function. Results suggest few issues with EMF or RF on gamete and embryo function at normal laboratory levels for the relatively short exposure times seen in the ART laboratory.展开更多
<strong>Background: </strong>The use of mobile phones continues to rise rapidly in the provision of health related services. Many countries have adopted the use of mobiles to provide sexual and reproductiv...<strong>Background: </strong>The use of mobile phones continues to rise rapidly in the provision of health related services. Many countries have adopted the use of mobiles to provide sexual and reproductive health and rights and especially among the adolescents where specific messages are tailored for various audiences with specific messages. The purpose of this paper is to present the results of a research priority setting exercise on mHealth and innovative strategies. <strong>Methods:</strong> We adapted Child Health and Nutrition Research Initiative methodology to identify and set research priorities on mHealth and innovative strategies that respond to sexual and reproductive health and rights services. General potential research questions were gathered online from multiple stakeholders in the region and sent for consolidation consolidated to technical experts in World Health Organization headquarters. The second phase involved a meeting with experts to review and thematically analyze the questions list of 33 questions producing a list of 22 research questions. The questions were scored against a six point criteria and ranked accordingly. Ten top priority research questions were identified. <strong>Results: </strong>Lists of 33 priority research questions for mHealth and innovative strategies were proposed for discussions by 67 stakeholders. The questions were reviewed, scored and ranked in a technical meeting by experts. The highest ranking questions at 87% include evaluation of mHealth for data management and sexual and reproductive health and rights decision making, assessment of innovative local financing techniques to support community based sexual reproductive health and rights and evaluation of the role of mobile technologies in referral and counter referral. <strong>Conclusions</strong>: Information and communication technology is developing drastically and has a great potential in improving health especially in sexual and reproductive health and rights service delivery. This potential must be demonstrated with more relevant and quality research on mHealth and innovative strategies priorities identified.展开更多
Reproductive biotechnologies, such as artificial insemination, sperm selection and embryo technologies, offer possibilitiesfor animal producers to increase reproductive efficiency. There have been many significant dev...Reproductive biotechnologies, such as artificial insemination, sperm selection and embryo technologies, offer possibilitiesfor animal producers to increase reproductive efficiency. There have been many significant developments in reproductivebiotechnologies over the last few decades, e.g., in sperm handling and preservation, in vitro embryo production and preservation,sexing and cloning. This review discusses some of the key changes that have occurred and explores their potential for increasing thereproductive efficiency of domestic animals in the future. As a consequence, they also offer opportunities to facilitate or accelerategenetic selection. If properly used, they may contribute to increase the sustainability of animal production. The role of epigenetics ininfluencing phenotype is also considered.展开更多
Assisted reproductive technology(ART)has evolved rapidly over the last 40 years,offering hope to individuals and couples struggling with infertility.As technology continues to evolve,simulating a realistic female repr...Assisted reproductive technology(ART)has evolved rapidly over the last 40 years,offering hope to individuals and couples struggling with infertility.As technology continues to evolve,simulating a realistic female reproductive system environment has become a common goal for all types of ARTs,thereby reducing the impact of the artificial microenvironment on perinatal and offspring health.In this review,we provide a brief history of the development of each major ART and discuss the impact of ART on perinatal and offspring health.We also explore how the negative consequences of ART may be overcome and how its benefits can be maximized.展开更多
Aim To assess whether adverse pregnancy outcomes in women with adenomyosis are different according to the method of conception and the concurrent of uterine leiomyoma(UL).Methods We performed a retrospective study.Fif...Aim To assess whether adverse pregnancy outcomes in women with adenomyosis are different according to the method of conception and the concurrent of uterine leiomyoma(UL).Methods We performed a retrospective study.Fifty-three singleton pregnancy cases complicated with adenomyosis were included in this study.In the study group,15 women became pregnant with assisted reproductive technology(ART)and 21 women combined with UL.Pregnancy outcomes were compared between ART and non-ART,UL and non-UL groups.Results The prevalence for such complications as hypertensive disorder complicating pregnancy(HDCP)and postpartum hemorrhage(PPH)were significantly higher in the women conceived by ART(33.3%vs.5.3%,P=0.023)and(53.3%vs.23.7%,P=0.037),respectively.And women concurrent with UL of which the diameter≥4cm were more likely to have severe PPH(44.4%vs.0%,P=0.021).Conclusion ART may increase the risk of adverse pregnancy outcomes such as HDCP and PPH in women with adenomyosis and UL of which the diameter≥4cm may further increase the risk of severe PPH.展开更多
文摘Objective:To detect common chromosomal aneuploidy variations in embryos from couples undergoing assisted reproductive technology and preimplantation genetic screening and their possible associations with embryo quality.Methods:In this study,359 embryos from 62 couples were screened for chromosomes 13,21,18,X,and Y by fluorescence insitu hybridization.For biopsy of blastomere,a laser was used to remove a significantly smaller portion of the zona pellucida.One blastomere was gently biopsied by an aspiration pipette through the hole.After biopsy,the embryo was immediately returned to the embryo scope until transfer.Embryo integrity and blastocyst formation were assessed on day 5.Results:Totally,282 embryos from 62 couples were evaluated.The chromosomes were normal in 199(70.57%)embryos and abnormal in 83(29.43%)embryos.There was no significant association between the quality of embryos and numerical chromosomal abnormality(P=0.67).Conclusions:Embryo quality is not significantly correlated with its genetic status.Hence,the quality of embryos determined by morphological parameters is not an appropriate method for choosing embryos without these abnormalities.
文摘Background and Purpose: A growing number of couples/partners have been undergoing assisted reproductive technology (ART) in Japan. The purpose of this study was to clarify the support from healthcare professionals based on the support vectors in the Family Care/Caring Theory proposed by Hohashi (2015) through a literature review. Methods: Using Ichushi-Web, we searched for original articles using the keywords “assisted reproductive technology”, “infertility”, “family”, “couple”, “nursing”, “care”, and “support”. Thirteen articles suitable for the purpose of this study were subjected to content analysis. Family support was encoded and grouped into subcategories and categories, and classified according to support vectors. Results: A total of 21 categories of support from healthcare professionals was extracted. Intervention for family internal environment included seven categories, such as “Nursing professionals stay close to females”. Intervention for family system unit included five categories, such as “Nursing professionals adjust couple/partner relationships”. Intervention for micro system only included “Nursing professionals provide opportunities for peer support to the couples/partners” and intervention for macro system only included “Nursing professionals encourage medical doctors to relate to females”. Intervention for family chrono environment included seven categories, such as “Healthcare professionals resolve female’s anxieties”. Conclusion: The support from healthcare professionals could be organized by the support vectors of Family Care/Caring Theory, but intervention for supra system (culture, religion, etc.) was lacking. Moreover, because most support was directed toward females or couples/partners, male-focused direct and/or indirect support are also needed. .
文摘The scope of this review is to focus on the management of benign ovarian cyst in the reproductive-age group of women undergoing ART. Ovarian cysts are a common occurrence in this patient population. The differential diagnosis includes functional cysts, dermoid cysts, endometrioma. The appropriate evaluation includes medical history and physical examination, laboratory tests and imaging. The treatment options include conservative follow-up, medical treatment and surgery. This review will explore the differential diagnosis, appropriate work-up and treatment options to the various cyst types encountered.
文摘Since 1992, assisted reproductive technology (ART) has been reported as a viable means of helping HIV-1 serodiscordant couples achieve pregnancy while theoretically reducing the risk for viral transmission. While the sum of the evidence suggests that ART is effective and safe, numerous controversies still exist, The follow- ing review addresses several of the important issues involved in the use of ART for HIV-serodiscordant couples, including patient selection, semen processing techniques, post-process HIV testing, the use of lUI vs IVF-ICSI.
文摘Background: Involuntary infertility is a tragedy in most African setting. This is due to premium placed on fertility as a result of roles children fulfill in the family and the society. Aetiologic factors of infertility in sub-Saharan Africa are mostly infection related and they are mainly associated with poor treatment outcome to conventional non assisted conception technique. Objective: To evaluate the level of awareness and perception of assisted conception treatment among women attending fertility clinic. Methods: A descriptive cross-sectional study. Results: One hundred and ninety six women attending fertility clinic were interviewed. Mean age was 34.8year and mean duration of infertility of 4.1 years. Of the 196 infertile women interviewed, 150 (76.5%) have heard of Assisted Reproductive Technology treatment. Sources of information were mainly family relation (46%) and friends (28.7%). Knowledge on some of Assisted Reproductive Technology practices showed that 50.7% were aware that the treatment could fail, 36.8% knew it could be applied for male infertility treatment, 9.3% and 18.7% respectively are aware that donor oocyte and sperm could be used for treatment. Perception on babies conceived from assisted conception treatment revealed that 52% of patients interviewed could not comment if they are normal and natural babies. Majority of patients could not affirm if they will agree to the use of donor gamete or zygote for their treatment. Conclusion: Awareness of assisted conception treatment was high, however knowledge on specifics of treatment was low and perception on some of the practices was unfavorable. Sensitization of the public will help overcome some beliefs that may be at tangent to some practices of assisted conception.
文摘Objective: To assess the secondary sex ratio (SSR) of assisted reproduction technology babies within a fertility clinic in Melbourne, Australia. Methods: A retrospective cohort study was conducted on 3369 babies who were born following single embryo transfer between 2011 and 2016. Variables examined included embryo creation date, maternal and paternal ages, maternal body mass index (BMI), type of infertility, sperm parameters, fertilization method, type of embryo and stage of transfer. Multivariate regression analysis was performed on the data set using STRATA V9.2. Results: More males were found to be born to embryos created in summer (adjusted odds ratio=1.46, 95% confidence interval: 1.08-1.95;P=0.01). Lower BMI of mother (≤30 kg/m 2) and younger age of parents (≤35 years) were associated with an increase in SSR (50.1% vs. 47.1%;50.6% vs. 48.8%;50.0% vs. 48.9%) respectively. Decreased SSR value was associated with primary subfertility, using in-vitro fertilization procedure and fresh embryo compared to those with secondary subfertility, using intracytoplasmic sperm injection procedure and thawed embryo (49.3% vs. 50.6%;47.1% vs. 50.8%;49.4% vs. 50.1%) respectively. Conclusions: The fertilization methods, type of embryo, stage of embryo transfer, parameters of the sperm and status of subfertility do not significantly affect the SSR. SSR is affected by the seasonality, maternal age, and BMI.
文摘Objective: To explore the potential predictors of a live birth (LB) outcome among subfertile couples of Asian ethnicity undergoing the first fertility treatment cycle;to assess the cumulative live birth rates after successive cycles;and to determine the incidence rate of spontaneous conception (SC).Methods:Subfertile couples were grouped according to treatment modalities at the first fertility treatment cycle: intrauterine insemination (IUI),in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI) and no treatment, and were followed-up for duration up to seven years. Multivariable logistic regression analysis was used for statistical analyses. Results: Age of female subjects [35-38 years, odds ratio (OR): 0.39;≥39 years, OR: 0.14], uterine factor subfertility (OR: 5.24), and treatment modalities (ORs: IUI 0.25, IVF 2.33 and ICSI 1.91) significantly predicted a LB outcome (P<0.05). The cumulative live birth rates were 11.7% IUI, 41.5% IVF, 27.5% ICSI and 22.6% from frozen embryo transfer cycles. The cumulative SC rate was 24.6% in the non-treated group and 10.7% in the treated group. All LBs from IVF cycles were delivered by the second cycle and within four years, compared to SC delivery of within five years in the non-treated group and six years in the treated group. Conclusions:Age of female subject, uterine factor and modalities of treatment are significant predictors for LB outcome at the first cycle. Higher delivery rates could be achieved following fewer successive IVF cycles and within a shorter duration compared to SC.
文摘The objective was to assess the outcome of pregnancies after assisted reproductive technology (ART). It was a case-control study carried out in four health facilities in Douala-Cameroon, over a period of five years. The cases were pregnant women who conceived through ART and the controls were those who conceived naturally. Cases and controls were matched for maternal age and parity (one case for two controls). A logistic regression analysis was used to compute Odds ratios. Statistical significance was set at 0.05. A total of 174 women who conceived through ART and 348 who conceived naturally were enrolled. Some independent factors associated with ART were: age over 45 years [aOR:</span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">7.55;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">(1.55 - 36.76);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], twin pregnancies [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">16.55;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (7.91 - 34.60);p < 0.01], Cervical cerclage [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3.04;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95% CI (1.23 - 7.50);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], miscarriages [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">11.73;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (5.07 - 27.10);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01], elective cesarean section [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">4.63;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (2.27 - 9.45);p:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">0.01] and low birth weight [aOR:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3.32;</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">95%</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">CI (1.90 - 5.82);p < 0.01]. Women who conceived by ART were older with higher rates of multiple pregnancy and complications. We recommend transfer of a single embryo.
文摘<strong>Background: </strong>This study aims to evaluate the infertility reflection in early pregnancy after assistive reproductive therapy (ART), including 1) process evaluation (the use and evaluation of infertility reflection) and 2) outcome evaluation (satisfaction of care needs, anticipatory anxiety towards the loss of a pregnancy or fetus, cognition of infertility experience, and depression and anxiety). <strong>Methods: </strong>This program evaluation study used a one-group pre-post-test design. The participants were 50 primiparas who had undergone ART at two fertility treatment facilities in a metropolitan area in Japan. For the infertility reflection, they conducted an online reflection. Data were collected three times: at the 5th week of pregnancy (Time 1), the 8th week of pregnancy as the final consultation at the clinic (Time 2), and the 16th week of pregnancy as the final point of early pregnancy (Time 3). <strong>Results: </strong>The data from 40 participants were analyzed. More than 80% of the users of the online reflection positively evaluated the appropriateness and usefulness of the methods and contents. Organized thoughts and feelings by reflection were shown as the reasons for the usefulness. The evaluation of the online reflection showed a relatively strong correlation with the Care Need Satisfaction Scale (CNSS) for both Time 2 and Time 3, but the online reflection did not show a significant correlation with the other outcome variables. There were no significant differences in outcome variables between users and non-users of online reflection between Time 2 and Time 3. <strong>Conclusions:</strong> Attempts at the reflection in early pregnancy require modified methods that do not have a negative impact and lead to the fulfillment of needs.
基金Major Science and Technology Project of Hainan Province(No.ZDKJ2017007)Key Research and Development Project of Hainan Provincial Science and Technology Department(No.ZDYF2019158)Scientific Research Project of Health and Family Planning Industry in Hainan Province(No.19A200124)。
文摘Objective:To investigate the incidence of neonatal birth defects in assisted reproductive technology(ART)by in vitro fertilization(IVF)and intracytoplasmic sperm injection(ICSI).Methods:The clinical data of 4229 cases of singleton deliver by infertile patients under 35 years old who received IVF/ICSI-ET in our center were analyzed.According to different fertilization methods,they were divided into IVF group(2967 cases)and ICSI group(1262 cases).The general situation of birth,birth defects and the location of defects were compared between the two groups.Results:a total of 38 cases of neonatal birth defects were found,the incidence of birth defects was 0.89%,including 30 cases(1.01%)in IVF group and 8 cases(0.64%)in ICSI group.There was no significant difference in the incidence of birth defects between the two groups(P>0.05).There was also no significant difference in birth weight,gestational age and gender ratio between the two groups(P>0.05).Conclusion:Different fertilization methods in assisted reproductive technology do not increase the incidence of neonatal birth defects.
基金performed within the framework of State projects 122041100276-0 and 075-01027-2200。
文摘Reproduction technologies(RTs)can provide for the reliable reproduction of amphibians,as well as perpetuation of species genetic variation with the use of biobanks.In 1982,in anticipation of the biodiversity conservation crisis,major Russian institutions collaborated in a dynamic program to develop and implement RTs for the sustainable management of amphibian biodiversity.An initial primary focus was the captive breeding of threatened Russian endemic anuran and caudate species,using RTs that varied from environmental manipulation to the use of exogenous gonadotropic hormones to stimulate reproduction.These species were mostly from Palearctic or cool mountain regions,but also included a wide range of species from warm regions.Other early achievements included the successful cryopreservation of anuran spermatozoa and anuran diploid pluripotent cell nuclei,in order to store both the matrilineal and patrilineal genomes in biobanks,with their subsequent development to the blastula stage after implantation into enucleated oocytes.After the turn of the 21st Century,in support of the priorities of the Amphibian Conservation Action Plan(2007),we developed RTs for the refrigerated storage of testicular or urinary spermatozoa for days to weeks at 4℃,the cryopreservation of urinary spermatozoa using anovel cryoprotectant,the in vitro fertilisation of hormonally induced oocytes either fresh or after refrigerated ex situ or in situ storage,and the artificial insemination of salamanders with fresh spermatozoa.In this article,we describe previously unpublished techniques and techniques from obscure Russian sources.
文摘Many advances in genetic selection, nutrition, housing and disease control have been incorporated into modern pork production since the 1950s resulting in highly prolific females and practices and technologies, which significantly increased efficiency of reproduction in the breeding herd. The objective of this manuscript is to review the literature and current industry practices employed for reproductive management. In particular the authors focus on assisted reproduction technologies and their application for enhanced productivity. Modern maternal line genotypes have lower appetites and exceptional lean growth potential compared to females of 20 yr ago. Thus, nutrient requirements and management techniques and technologies, which affect gilt development and sow longevity, require continuous updating. Failure to detect estrus accurately has the greatest impact on farrowing rate and litter size. Yet, even accurate estrus detection will not compensate for the variability in the interval between onset of estrus and actual time of ovulation. However, administration of GnRH analogs in weaned sows and in gilts after withdrawal of altrenogest do overcome this variability and thereby synchronize ovulation, which makes fixed-time AI practical. Seasonal infertility, mediated by temperature and photoperiod, is a persistent problem. Training workers in the art of stockmanship is of increasing importance as consumers become more interested in humane animal care. Altrenogest, is used to synchronize the estrous cycle of gilts, to prolong gestation for 2-3 d to synchronize farrowing and to postpone post-weaning estrus. P.G. 600~ is used for induction of estrus in pre-pubertal gilts and as a treatment to overcome seasonal anestrous. Sperm cell numbers/dose of semen is significantly less for post cervical AI than for cervical AI. Real-time ultrasonography is used to determine pregnancy during wk 3-5. PGF2a effectively induces farrowing when administered within two d of normal gestation length. Ovulation synchronization, single fixed-time AI and induced parturition may lead to farrowing synchronization, which facilitates supervision and reduces stillbirths and piglet mortality. Attendance and assistance at farrowing is important especially to ensure adequate colostrum consumption by piglets immediately after birth. New performance terminologies are presented.
基金This study was funded by Spanish Ministry of Economy and Competitiveness(MINECO)and European Regional Development Fund(FEDER)grant AGL2015–66341-R and Fundación Seneca,Agencia de Ciencia y Tecnología de la Region de Murcia grant 20040/GERM/16.EPO received funding from“Ayudas para estancias en el extranjero de jóvenes investigadores y estudiantes de doctorado en las líneas de actuación de Campus Mare Nostrum”,R-47/2018,to a doctoral stay at the Babraham Institute(Cambridge,U.K.).
文摘Background:In vitro embryo production(IVP)and embryo transfer(ET)are two very common assisted reproductive technologies(ART)in human and cattle.However,in pig,the combination of either procedures,or even their use separately,is still considered suboptimal due to the low efficiency of IVP plus the difficulty of performing ET in the long and contorted uterus of the sow.In addition,the potential impact of these two ART on the health of the offspring is unknown.We investigated here if the use of a modified IVP system,with natural reproductive fluids(RF)as supplements to the culture media,combined with a minimally invasive surgery to perform ET,affects the output of the own IVP system as well as the reproductive performance of the mother and placental molecular traits.Results:The blastocyst rates obtained by both in vitro systems,conventional(C-IVP)and modified(RF-IVP),were similar.Pregnancy and farrowing rates were also similar.However,when compared to in vivo control(artificial insemination,AI),litter sizes of both IVP groups were lower,while placental efficiency was higher in AI than in RF-IVP.Gene expression studies revealed aberrant expression levels for PEG3 and LUM in placental tissue for C-IVP group when compared to AI,but not for RF-IVP group.Conclusions:The use of reproductive fluids as additives for the culture media in pig IVP does not improve reproductive performance of recipient mothers but could mitigate the impact of artificial procedures in the offspring.
文摘There can be little argument that embryo quality is one of the most critical factors in the success of assisted reproductive techniques. Yet the current methods of grading embryos are subjective at best. While a number of different groups have described more qualitative means of assessing embryo quality, the current standard remains morphology. Morphology has proven a good standard, but it does not allow for the detection of chromosomal abnormalities nor can it assess the biochemical status of the embryo prior to transfer. This laboratory recently described a method to estimate embryo weight and suggested weight might be a good indicator of biochemical status. The objective of the present study was to determine the relationship between maternal body composition and embryo weight and determine the influence maternal chemistry had on embryo development. The data continue to suggest that maternal body composition, especially body fat, influences the chemical nature of the embryo and may play a critical role in long-term survival.
文摘Assisted reproductive technology (ART) laboratories represent the marriage of the most basic of biological activities with the most cutting edge technologies. While this association has worked well, the mixture of biology and technology can create risks to normal embryo development. Recently a significant amount of literature has explored the risks of manmade, electrically induced magnetic fields and carrier waves on reproduction, which some studies have suggested will lower functional gamete numbers in the males and potentially induce genetic issues in embryos. However, little is known about these phenomena within the ART laboratory, a laboratory filled with electronic equipment. The object of the present study was to explore the potential exposure of gametes and early stage embryos to two of the most prevalent fields and waves utilized in manmade technologies seen in the general environment, electromagnetic fields (EMF) and radio frequency waves (RF), and determine the effect varying levels of these energetic forces had on gamete function and embryo development. Results indicated that while extremely high concentrations of EMF (approximately 50-100X of laboratory background) caused negative outcomes in both gametes and embryos, levels consistent will the majority of lab equipment did not appear to impact growth, or function. Further, even extremely high RF appeared to have no impact cellular function. Results suggest few issues with EMF or RF on gamete and embryo function at normal laboratory levels for the relatively short exposure times seen in the ART laboratory.
文摘<strong>Background: </strong>The use of mobile phones continues to rise rapidly in the provision of health related services. Many countries have adopted the use of mobiles to provide sexual and reproductive health and rights and especially among the adolescents where specific messages are tailored for various audiences with specific messages. The purpose of this paper is to present the results of a research priority setting exercise on mHealth and innovative strategies. <strong>Methods:</strong> We adapted Child Health and Nutrition Research Initiative methodology to identify and set research priorities on mHealth and innovative strategies that respond to sexual and reproductive health and rights services. General potential research questions were gathered online from multiple stakeholders in the region and sent for consolidation consolidated to technical experts in World Health Organization headquarters. The second phase involved a meeting with experts to review and thematically analyze the questions list of 33 questions producing a list of 22 research questions. The questions were scored against a six point criteria and ranked accordingly. Ten top priority research questions were identified. <strong>Results: </strong>Lists of 33 priority research questions for mHealth and innovative strategies were proposed for discussions by 67 stakeholders. The questions were reviewed, scored and ranked in a technical meeting by experts. The highest ranking questions at 87% include evaluation of mHealth for data management and sexual and reproductive health and rights decision making, assessment of innovative local financing techniques to support community based sexual reproductive health and rights and evaluation of the role of mobile technologies in referral and counter referral. <strong>Conclusions</strong>: Information and communication technology is developing drastically and has a great potential in improving health especially in sexual and reproductive health and rights service delivery. This potential must be demonstrated with more relevant and quality research on mHealth and innovative strategies priorities identified.
文摘Reproductive biotechnologies, such as artificial insemination, sperm selection and embryo technologies, offer possibilitiesfor animal producers to increase reproductive efficiency. There have been many significant developments in reproductivebiotechnologies over the last few decades, e.g., in sperm handling and preservation, in vitro embryo production and preservation,sexing and cloning. This review discusses some of the key changes that have occurred and explores their potential for increasing thereproductive efficiency of domestic animals in the future. As a consequence, they also offer opportunities to facilitate or accelerategenetic selection. If properly used, they may contribute to increase the sustainability of animal production. The role of epigenetics ininfluencing phenotype is also considered.
文摘Assisted reproductive technology(ART)has evolved rapidly over the last 40 years,offering hope to individuals and couples struggling with infertility.As technology continues to evolve,simulating a realistic female reproductive system environment has become a common goal for all types of ARTs,thereby reducing the impact of the artificial microenvironment on perinatal and offspring health.In this review,we provide a brief history of the development of each major ART and discuss the impact of ART on perinatal and offspring health.We also explore how the negative consequences of ART may be overcome and how its benefits can be maximized.
基金“Natural Science Foundation of Beijing Municipality”[No:7222206].
文摘Aim To assess whether adverse pregnancy outcomes in women with adenomyosis are different according to the method of conception and the concurrent of uterine leiomyoma(UL).Methods We performed a retrospective study.Fifty-three singleton pregnancy cases complicated with adenomyosis were included in this study.In the study group,15 women became pregnant with assisted reproductive technology(ART)and 21 women combined with UL.Pregnancy outcomes were compared between ART and non-ART,UL and non-UL groups.Results The prevalence for such complications as hypertensive disorder complicating pregnancy(HDCP)and postpartum hemorrhage(PPH)were significantly higher in the women conceived by ART(33.3%vs.5.3%,P=0.023)and(53.3%vs.23.7%,P=0.037),respectively.And women concurrent with UL of which the diameter≥4cm were more likely to have severe PPH(44.4%vs.0%,P=0.021).Conclusion ART may increase the risk of adverse pregnancy outcomes such as HDCP and PPH in women with adenomyosis and UL of which the diameter≥4cm may further increase the risk of severe PPH.