Objectives: Study the effect of adding a delayed blastocyst to a transferred good quality one on ICSI cycle outcomes. Study design: Prospective cohort study. Participants/materials, setting, methods: 90 infertile pati...Objectives: Study the effect of adding a delayed blastocyst to a transferred good quality one on ICSI cycle outcomes. Study design: Prospective cohort study. Participants/materials, setting, methods: 90 infertile patients aged from 20<span><span><span> </span></span></span><span><span><span>- 35 years due to mild male factor, unexplained infertility or tubal factor. Patients with PCOS, endometriosis, RIF, poor responder and azoospermia were excluded. Setting: Duration 6 month</span></span></span><span><span><span>s</span></span></span><span><span><span> from October 2019 to April 2020 in a private IVF center in Egypt. 30 case</span></span></span><span><span><span>s</span></span></span><span><span><span> were subjected to elective single embryo transfer and the other 60 with two embryo transfer</span></span></span><span><span><span>s</span></span></span><span><span><span>, one good quality and </span></span></span><span><span><span>an</span></span></span><span><span><span>other poor quality blastocyst. Results: (clinical pregnancy rate) was comparable between the two groups, being 47.7% and 36.7% in SET and DET groups respectively (p = 0.361). Miscarriage and ectopic pregnancy rate were observed in 10% of the cases pregnant after SET (group I) and in only 6.7% of the cases pregnant after DET (group II) denoting no significant statistical difference between the two groups. The highest incidence was missed miscarriages in the two groups and ectopic pregnancy was observed only in one case in group II (DET). Twin pregnancy occurred in 22% of pregnant females in the second group. Late pregnancy complications in the form of preterm labour, premature rupture of membrane and preeclampsia occurred mainly in pregnant females in the second group 18%. Conclusion: Neither adding a delayed blastocyst negatively affect</span></span></span><span><span><span>ed</span></span></span><span><span><span> the good one nor affect</span></span></span><span><span><span>ed</span></span></span><span><span><span> the live birth rate but increased multiple pregnancy rate</span></span></span><span><span><span>s</span></span></span><span><span><span>.展开更多
<strong>Study Question:</strong> The question: is there any difference in pregnancy rate between embryo transfer day 5 and day 6 in IVF? What Is Known Already? Blastocyst transfer is increasingly popular i...<strong>Study Question:</strong> The question: is there any difference in pregnancy rate between embryo transfer day 5 and day 6 in IVF? What Is Known Already? Blastocyst transfer is increasingly popular in assisted reproductive technology (ART) centers today. Very few articles concentrate on comparing Day 5 and Day 6 embryo transfer with conflict results. <strong>Objective, Study Design:</strong> Systematic review and meta-analysis of published controlled studies. Searches conducted from 2001-2020 on PubMed. Medline, EMBASE, and ISI Web of Science Electronic database is used to collect data, using the following search terms: blastocyst, Day 5, Day 6, embryo transfer (E.T.) and pregnancy rate. <strong>Materials, Setting, Methods:</strong> A total of 6 full-text articles preselected from 211 references, based on title and abstract. Two independent reviewers performed data selection and extraction according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement (PRISMA). This systematic review was conducted according to (PICO) standard. Random-effect meta-analysis performed on all data (overall analysis). <strong>Results and the Role of Chance:</strong> Data from 6 relevant articles were extracted and integrated into the meta-analysis that reported clinical pregnancy rate (CPR) as an outcome in 5640 cycles, 2274 cycle had embryo transfer at day 6 and the control was 3366 cycle had embryo transfer day 5 showed a significantly higher clinical pregnancy rate following Day 5 embryo transfer compared with Day 6 embryo transfer with odd ratio and 95% confidence limit 0.73 (0.66 - 0.82)<em> p</em> value < 0.000. Sensitivity analysis led to similar results and conclusions.<strong> Limitations, Reasons for Caution: </strong>The validity of meta-analysis results depends mainly on the quality and the number of published studies available. Indeed, this meta-analysis included no randomized controlled trial (RCT). <strong>Wider Implications of the Findings: </strong>In regards to the results of this original meta-analysis, ART practitioners should preferably transfer D5 rather than D6 blastocysts. Further RCTs are needed to address the question of whether D6 embryos should be transported.展开更多
In order to improve the in vitro fertilization rate of bovine, the effects of different sperm capacitation methods on fertilization were investigated. Total two treatments were designed: two-time centrifugation (C)...In order to improve the in vitro fertilization rate of bovine, the effects of different sperm capacitation methods on fertilization were investigated. Total two treatments were designed: two-time centrifugation (C), and one-time centrifugation and swim-up method (CS). The results showed that the cleavage rate in the C treatment group was (75.6±4.5)%, which showed no difference compared with that ((76.4±1.9)%) in the CS treatment group (P〉0.05); there was also no significant dif- ference in blastocyst rate between the two treatment groups ((35.7±4.1)% vs. (36.3± 2.7)%, P〉0.05). However, the CS treatment significantly saved the capacitation time in vitro.展开更多
[Objective] The aim was to explore the effect of cumulus cells on the in vitro fertilization of in vitro matured bovine oocytes. [Method] The in vitro matured oocytes were divided into three groups of cumulus cells re...[Objective] The aim was to explore the effect of cumulus cells on the in vitro fertilization of in vitro matured bovine oocytes. [Method] The in vitro matured oocytes were divided into three groups of cumulus cells removal, partial removal and no removal. [Result] In the co-culture with cumulus cells, the oocytes of the removal group had higher cleavage rate and blastocyst rate (74.4%±4.1, 53.7%±5.1) than those of the no removal group (72.7%±5.1, 52.4%±3.5), but the difference was not significant (P〉0.05), while both groups had better performances than the re- moval group (39.6%±4.5, 18.8%±4.6) with the difference reaching the significant level (P〈0.05). All the three groups showed significant difference with the control. The combination of cumulus cells and melatonin achieved the best effects as the cleavage rate and blastocyst rate of the partial removal group (79.8%±3.7, 56.5%±5.1) were better than those of the no removal group (78.2%±2.6, 55.8%±4.6), and the difference was not significant, while both group had better performances than the removal group (48.3%±5.5, 22.7%±4.3) and the control group with the differences reaching the significant level (P〈0.05). [Conclusion] The study provided technical support for the production of dairy cows and beef cattle.展开更多
文摘Objectives: Study the effect of adding a delayed blastocyst to a transferred good quality one on ICSI cycle outcomes. Study design: Prospective cohort study. Participants/materials, setting, methods: 90 infertile patients aged from 20<span><span><span> </span></span></span><span><span><span>- 35 years due to mild male factor, unexplained infertility or tubal factor. Patients with PCOS, endometriosis, RIF, poor responder and azoospermia were excluded. Setting: Duration 6 month</span></span></span><span><span><span>s</span></span></span><span><span><span> from October 2019 to April 2020 in a private IVF center in Egypt. 30 case</span></span></span><span><span><span>s</span></span></span><span><span><span> were subjected to elective single embryo transfer and the other 60 with two embryo transfer</span></span></span><span><span><span>s</span></span></span><span><span><span>, one good quality and </span></span></span><span><span><span>an</span></span></span><span><span><span>other poor quality blastocyst. Results: (clinical pregnancy rate) was comparable between the two groups, being 47.7% and 36.7% in SET and DET groups respectively (p = 0.361). Miscarriage and ectopic pregnancy rate were observed in 10% of the cases pregnant after SET (group I) and in only 6.7% of the cases pregnant after DET (group II) denoting no significant statistical difference between the two groups. The highest incidence was missed miscarriages in the two groups and ectopic pregnancy was observed only in one case in group II (DET). Twin pregnancy occurred in 22% of pregnant females in the second group. Late pregnancy complications in the form of preterm labour, premature rupture of membrane and preeclampsia occurred mainly in pregnant females in the second group 18%. Conclusion: Neither adding a delayed blastocyst negatively affect</span></span></span><span><span><span>ed</span></span></span><span><span><span> the good one nor affect</span></span></span><span><span><span>ed</span></span></span><span><span><span> the live birth rate but increased multiple pregnancy rate</span></span></span><span><span><span>s</span></span></span><span><span><span>.
文摘<strong>Study Question:</strong> The question: is there any difference in pregnancy rate between embryo transfer day 5 and day 6 in IVF? What Is Known Already? Blastocyst transfer is increasingly popular in assisted reproductive technology (ART) centers today. Very few articles concentrate on comparing Day 5 and Day 6 embryo transfer with conflict results. <strong>Objective, Study Design:</strong> Systematic review and meta-analysis of published controlled studies. Searches conducted from 2001-2020 on PubMed. Medline, EMBASE, and ISI Web of Science Electronic database is used to collect data, using the following search terms: blastocyst, Day 5, Day 6, embryo transfer (E.T.) and pregnancy rate. <strong>Materials, Setting, Methods:</strong> A total of 6 full-text articles preselected from 211 references, based on title and abstract. Two independent reviewers performed data selection and extraction according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis statement (PRISMA). This systematic review was conducted according to (PICO) standard. Random-effect meta-analysis performed on all data (overall analysis). <strong>Results and the Role of Chance:</strong> Data from 6 relevant articles were extracted and integrated into the meta-analysis that reported clinical pregnancy rate (CPR) as an outcome in 5640 cycles, 2274 cycle had embryo transfer at day 6 and the control was 3366 cycle had embryo transfer day 5 showed a significantly higher clinical pregnancy rate following Day 5 embryo transfer compared with Day 6 embryo transfer with odd ratio and 95% confidence limit 0.73 (0.66 - 0.82)<em> p</em> value < 0.000. Sensitivity analysis led to similar results and conclusions.<strong> Limitations, Reasons for Caution: </strong>The validity of meta-analysis results depends mainly on the quality and the number of published studies available. Indeed, this meta-analysis included no randomized controlled trial (RCT). <strong>Wider Implications of the Findings: </strong>In regards to the results of this original meta-analysis, ART practitioners should preferably transfer D5 rather than D6 blastocysts. Further RCTs are needed to address the question of whether D6 embryos should be transported.
基金Supported by Earmarked Fund for China Agriculture(Beef and Yak)Research System(NYCYTX-38)Key Agriculture Research and Development Program of Qiqihar(NYGG-201524)~~
文摘In order to improve the in vitro fertilization rate of bovine, the effects of different sperm capacitation methods on fertilization were investigated. Total two treatments were designed: two-time centrifugation (C), and one-time centrifugation and swim-up method (CS). The results showed that the cleavage rate in the C treatment group was (75.6±4.5)%, which showed no difference compared with that ((76.4±1.9)%) in the CS treatment group (P〉0.05); there was also no significant dif- ference in blastocyst rate between the two treatment groups ((35.7±4.1)% vs. (36.3± 2.7)%, P〉0.05). However, the CS treatment significantly saved the capacitation time in vitro.
基金Supported by the Key Program for Agriculture of Qiqihar City(NYGG-201524)~~
文摘[Objective] The aim was to explore the effect of cumulus cells on the in vitro fertilization of in vitro matured bovine oocytes. [Method] The in vitro matured oocytes were divided into three groups of cumulus cells removal, partial removal and no removal. [Result] In the co-culture with cumulus cells, the oocytes of the removal group had higher cleavage rate and blastocyst rate (74.4%±4.1, 53.7%±5.1) than those of the no removal group (72.7%±5.1, 52.4%±3.5), but the difference was not significant (P〉0.05), while both groups had better performances than the re- moval group (39.6%±4.5, 18.8%±4.6) with the difference reaching the significant level (P〈0.05). All the three groups showed significant difference with the control. The combination of cumulus cells and melatonin achieved the best effects as the cleavage rate and blastocyst rate of the partial removal group (79.8%±3.7, 56.5%±5.1) were better than those of the no removal group (78.2%±2.6, 55.8%±4.6), and the difference was not significant, while both group had better performances than the removal group (48.3%±5.5, 22.7%±4.3) and the control group with the differences reaching the significant level (P〈0.05). [Conclusion] The study provided technical support for the production of dairy cows and beef cattle.