期刊文献+
共找到1,843篇文章
< 1 2 93 >
每页显示 20 50 100
Effects of human contraceptive on reproduction and offspring in Chrysomya megacephala 被引量:2
1
作者 Tarinee Chaiwong Kabkaew L Sukontason +3 位作者 Urai Chaisri Hiromu Kurahashi Michelle Sanford Kom Sukontason 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2011年第4期259-265,共7页
Objective:To investigate the effect of human contraceptive(HC) as ability to suppress the reproductive success of blow fly,Chrysomya megacephala(Fabricius)(C.megacephala) and offspring under controlled laboratory cond... Objective:To investigate the effect of human contraceptive(HC) as ability to suppress the reproductive success of blow fly,Chrysomya megacephala(Fabricius)(C.megacephala) and offspring under controlled laboratory conditions.Methods:Adult C.megacephala were fed with low(0.036 mg/mL) and high dose(0.072 mg/mL) HC(Microgest~?,Thailand),containing levonorgestrel and ethinyl estradiol,in their drinking water for 7 days.Three experiments were set;experimentⅠwith fed only in parental males,experimentⅡwith fed only in parental females and experimentⅢwith fed in both males and females.All experiments were then maintained for 3 generations after crossing and inbreeding.Results:A lower ovariole production and less fully mature ovarioles were evident in F1,F2 and F3 than control when parent males,females and both had been fed with high dose HC.Cellular changes during spermatogenesis in F1,F2 and F3 testes was confirmed using transmission electron microscopy(TEM),showing the low level of condensed chromatin,necrotic chromatin,irregularities and degenerated nuclear envelope in the nucleus. In the cytoplasm,mitochondrial swelling,rough endoplasmic reticulum swelling as well as vacuolated cytoplasm were noticed.As for the sperm per se,we found the degenerated nuclei and/ or incomplete mitochondrial derivative,axoneme and vacuolated flagella.Regarding deformity in F1,F2 and F3 ovariole,ultrastructural alteration observed by scanning electron microscopy (SEM) included malformations involving fragile enveloping peritoneal sheath,cracked ovarioles, peel away chorion,crumbled eggshell and incomplete development;whereas TEM presented malformed and disorganized mass of cells,proteic yolk granules and vacuolated vesicles. Conclusions:Administer of HC to adult C.megacephala caused ovariole reduction,less matured ovariole and affected cellular changes in testes and ovariole of offspring up to F3. 展开更多
关键词 human CONTRACEPTIVE reproduction Chrysomya megacephala
下载PDF
Cultural and Socio-economical Dimensions a- Human Reproduction and Sex Education in the Biology Textbooks of Eight Countries
2
作者 Sabah Selmaoui Bouj emaa Agorrama +3 位作者 Salah-eddine Kzami Abdelaziz Razouki Pierre Clement Silvia Caravita 《Sociology Study》 2012年第12期963-968,共6页
This study was carried out within the European research project "Biology, Health and Environmental Education for Better Citizenship". It is a comparative analysis of textbooks from eight Mediterranean countries whic... This study was carried out within the European research project "Biology, Health and Environmental Education for Better Citizenship". It is a comparative analysis of textbooks from eight Mediterranean countries which differ by their cultures, their socio-economical levels, and their religions. This work is focused on the sensitive educational topic "Human Reproduction and Sex Education". And 43 biology textbooks are analyzed among eight countries: four are in Europe and four in Africa and Middle East. Grids were built to identify implicit values in the texts and images. It is a more precisely explicit or implicit presence of cultural, socio-economical, and ethical dimensions. The investigation concerns whether the authors of textbooks present differently this theme depending on the socio-cultural, ethical, and religious contexts. The content of the textbooks was analyzed as reflecting the conceptions of their authors and publishers. The outcomes of the analyses show that several textbooks present images of human beings restricted to only one ethnic type, usually white-skinned and with fair hair. The social, cultural, economical, and ethical dimensions were generally absent, except for some interest for them in few European textbooks. 展开更多
关键词 school textbooks human reproduction sex education cultural dimension socio-economical dimension
下载PDF
One-step cell biomanufacturing platform:porous gelatin microcarrier beads promote human embryonic stem cell-derived midbrain dopaminergic progenitor cell differentiation in vitro and survival after transplantation in vivo 被引量:1
3
作者 Lin Feng Da Li +10 位作者 Yao Tian Chengshun Zhao Yun Sun Xiaolong Kou Jun Wu Liu Wang Qi Gu Wei Li Jie Hao Baoyang Hu Yukai Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第2期458-464,共7页
Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s disease.Transplantation of midbrain dopaminergic progenitor cells is a p... Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s disease.Transplantation of midbrain dopaminergic progenitor cells is a promising treatment for Parkinson’s disease.However,transplanted cells can be injured by mechanical damage during handling and by changes in the transplantation niche.Here,we developed a one-step biomanufacturing platform that uses small-aperture gelatin microcarriers to produce beads carrying midbrain dopaminergic progenitor cells.These beads allow midbrain dopaminergic progenitor cell differentiation and cryopreservation without digestion,effectively maintaining axonal integrity in vitro.Importantly,midbrain dopaminergic progenitor cell bead grafts showed increased survival and only mild immunoreactivity in vivo compared with suspended midbrain dopaminergic progenitor cell grafts.Overall,our findings show that these midbrain dopaminergic progenitor cell beads enhance the effectiveness of neuronal cell transplantation. 展开更多
关键词 axonal integrity cell cryopreservation cellular environment cellular niche cell replacement therapy dopaminergic progenitors human pluripotent stem cell mechanical damage neuronal cell delivery Parkinson’s disease small-aperture gelatin microcarriers
下载PDF
Can Helicobacter pylori infection influence human reproduction? 被引量:6
4
作者 Elena Moretti Natale Figura +1 位作者 Giulia Collodel Antonio Ponzetto 《World Journal of Gastroenterology》 SCIE CAS 2014年第19期5567-5574,共8页
Helicobacter pylori (H. pylori) infection could be associated with extra-digestive diseases. Here, we report the evidences concerning the decrease in reproductive potential occurring in individuals infected by H. pylo... Helicobacter pylori (H. pylori) infection could be associated with extra-digestive diseases. Here, we report the evidences concerning the decrease in reproductive potential occurring in individuals infected by H. pylori, especially by strains expressing CagA. This infection is more prevalent in individuals with fertility disorders. Infected women have anti-H. pylori antibodies in cervical mucus and follicular fluid that may decrease sperm motility and cross react immunologically with spermatozoa, conceivably hampering the oocyte/sperm fusion. Infection by CagA positive organisms enhances the risk of preeclampsia, which is a main cause of foetus death. These findings are supported by the results of experimental infections of pregnant mice, which may cause reabsorption of a high number of foetuses and alter the balance between Th1 and Th2 cell response. Infected men have decreased sperm motility, viability and numbers of normally shaped sperm and augmented systemic levels of inflammatory cytokines, such as tumor necrosis factor-&#x003b1;, which may damage spermatozoa. In countries where parasitic infestation is endemic, detrimental effects of infection upon spermatozoa may not occur, because the immune response to parasites could determine a switch from a predominant Th1 type to Th2 type lymphocytes, with production of anti-inflammatory cytokines. In conclusion, the evidences gathered until now should be taken into consideration for future studies aiming to explore the possible role of H. pylori infection on human reproduction. 展开更多
关键词 Antigenic mimicry Helicobacter pylori infection human sperm Inflammatory cytokines PREECLAMPsIA reproductive disorders
下载PDF
The relationship between DNA fragmentation and the intensity of morphologically abnormal human spermatozoa
5
作者 Mercedes González-Martínez Pascual Sánchez-Martín +2 位作者 Carmen López-Fernández Stephen D.Johnston Jaime Gosálvez 《Asian pacific Journal of Reproduction》 CAS 2024年第1期22-27,共6页
Objective:To determine the relationship between teratozoospermia and sperm DNA fragmentation(SDF)in the human ejaculate.Methods:This retrospective study included 100 normozoospermic men as a control cohort(abnormal fo... Objective:To determine the relationship between teratozoospermia and sperm DNA fragmentation(SDF)in the human ejaculate.Methods:This retrospective study included 100 normozoospermic men as a control cohort(abnormal forms>14%),210 patients with a high level of abnormal forms(≤4%)and 65 patients presenting with a moderate level of abnormal forms(>4%to≤14%)based on the World Health Organization definitions.Sperm morphology was assessed using bright field microscopy.Sperm DNA fragmentation was assessed using the sperm chromatin dispersion assay.Non-parametric analyses were conducted to examine the relationship between abnormal sperm morphology and sperm DNA fragmentation;receiver operating characteristic(ROC)analyses were conducted to assess sensitivity and specificity of this relationship.Results:A correlation analysis revealed that the higher the proportion of abnormal spermatozoa in the ejaculate,the higher the level of SDF(Spearman's Rho=-0.230;P<0.001).Significant differences in the proportion of SDF were found when all cohorts were compared(P<0.001);these significant differences were also retained when the different cohorts were compared pairwise.ROC analysis showed a moderate but significant predictive value for SDF to differentiate patients with different levels of teratozoospemia.Conclusions:Although analysis of a more continuous range of values for teratozoospermia would help further clarify any causal relationship with SDF,there is clearly a synergistic or coincident affiliation between these variables that needs to be acknowledged by the clinician when interpreting the spermiogram. 展开更多
关键词 TERATOZOOsPERMIA sperm morphology sperm DNA fragmentation Male factor human reproduction human fertility
下载PDF
Human circBOULE RNAs as potential biomarkers for sperm quality and male infertility
6
作者 Liping Cheng He Jin +3 位作者 Tianheng Xiao Xiaoyu Yang Tingting Zhao Eugene Yujun Xu 《Journal of Biomedical Research》 CAS CSCD 2024年第5期473-484,I0003-I0008,共18页
Reliable molecular biomarkers to predict fertility remain scarce.The current study investigated the potential of testis-specific circBOULE RNAs as biomarkers for male infertility and sperm quality.Using reverse transc... Reliable molecular biomarkers to predict fertility remain scarce.The current study investigated the potential of testis-specific circBOULE RNAs as biomarkers for male infertility and sperm quality.Using reverse transcription-PCR and real-time reverse transcription-PCR assays,we identified seven circular RNAs from the human BOULE gene in human sperm.We observed that the expression level of circEx3-6 was significantly reduced in asthenozoospermia,while the expression levels of both circEx2-6 and circEx2-7 were decreased in terato-zoospermia,compared with the controls.Furthermore,we demonstrated that the expression level of circEx2-6 was negatively correlated with the sperm DNA fragmentation index,and the expression level of circEx2-7 was correlated with both fertilization and cleavage rates in those treated with the assisted reproductive technologies.Further functional analyses in a transgenic fly model supported the roles of circBOULE RNAs in sperm development and human male fertility.Collectively,our findings support that sperm circBOULE RNAs may serve as diagnostic biomarkers for assessing sperm motility and DNA quality.Therefore,clinical application and significance of sperm circBOULE RNAs in the assisted reproductive technologies warrant further investigation. 展开更多
关键词 human circBOULE RNAs sperm DNA fragmentation index fertilization rate cleavage rate semen parameters assisted reproductive technology
下载PDF
Study on the Correlation between Human Papillomavirus and Mycoplasma genitalium Combined with TCT Detection
7
作者 Hairong Fang Xiaoyu Jiang +1 位作者 Lianxing Xu Huan Zhao 《Natural Science》 2024年第8期121-129,共9页
Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design ... Objective: This study aims to explore the correlation between human papillomavirus (HPV) and Mycoplasma genitalium (CT) combined with TCT detection in cervical cancer screening. Method: A cross-sectional study design was adopted, and a total of 609 women who came to seek medical treatment were recruited as the study subjects. Combination testing was evaluated on cervical cancer screening by testing the women for HPV, CT with TCT detection and analyzing the relationship of cervical lesions with HPV and CT infection. Results: The study results showed that 21.57% of the subjects were infected with both HPV and CT, and 48.42% of the cases had abnormal TCT results at the same time. Further data analysis showed that HPV infection was significantly associated with abnormal TCT outcomes (p < 0.05), suggesting a possible synergistic effect of the two infections in cervical lesions. The combined sensitivity and specificity of HPV, CT and TCT detection were 21.57% and 48.42%, respectively, which were significantly higher than that of single detection. Conclusion: In summary, the results of this study support the importance of combined HPV, CT, and TCT testing in cervical cancer screening, and propose the hypothesis that combined testing may improve screening effectiveness. However, further large sample studies are needed to confirm this conclusion and explore the prospects of combined testing in clinical practice. 展开更多
关键词 human Papillomavirus (HPV) Mycoplasma Infection of reproductive Tract Liquid-Based Thin Layer Cytology (TCT) INFECTION Infection Rate
下载PDF
Human Rights and Development:China's Contributions Based on a Larger Concept of Human Rights
8
作者 WU Wenyang LI Rong 《The Journal of Human Rights》 2024年第4期776-801,共26页
The Western liberal view of global governance can no longer effectively address the challenges facing the world today or respond to the demands of developing countries in the fields of human rights and development.Mea... The Western liberal view of global governance can no longer effectively address the challenges facing the world today or respond to the demands of developing countries in the fields of human rights and development.Meanwhile,the United Nations human rights and development agenda also has its limitations.Against such a backdrop,China's path of human rights development has avoided the trap of human rights confrontation and the clash of civilizations.It has set an example of complementarity and positive interaction between human rights and development by unifying collective human rights with individual human rights and integrating the universality and particularity of human rights.Xi Jinping,general secretary of the Communist Party of China(CPC)Central Committee,delivered a speech at the 37th group study session of the Political Bureau of the CPC Central Committee on China's Path of Human Rights Development.This elevated China's human rights development to a new historical height.Practice has proved that China's concept and path of human rights in the new era have not only effectively promoted the development of its human rights cause,but also contributed Chinese wisdom to the global cause of human rights and development with a larger concept of human rights.Under the framework of the concept of building a community with a shared future for mankind,the Belt and Road Initiative,and the Global Development Initiative,China has contributed to enhancing the discourse power of developing countries in human rights and building a fairer,more just,more reasonable and more inclusive system for global human rights governance. 展开更多
关键词 human rights and development a larger concept of human rights global human rights governance China’s path of human rights development
下载PDF
Pioneering a New Realm of Human Rights Civilization in the Chinese Path to Modernization——An Overview of the Symposium on“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”
9
作者 王新怡 黄安杰 QIAN chuijun(Translated) 《The Journal of Human Rights》 2024年第2期476-481,共6页
On October 14,2023,a symposium themed“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”was held in Changchun,Jilin Province,China.More than fifty experts,scholars,and r... On October 14,2023,a symposium themed“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”was held in Changchun,Jilin Province,China.More than fifty experts,scholars,and researchers from national institutions and universities engaged in discussions and exchanges on human rights on the Chinese path to modernization,including the path,practice,knowledge systems,and civilization forms of human rights.This symposium played a significant role in advancing the construction of the disciplinary system,academic system,and discourse system of human rights in China. 展开更多
关键词 Chinese path to modernization Chinese human rights civilization China’s indigenous human rights knowledge system free and comprehensive human development
下载PDF
On the Theoretical System Development of Contemporary Chinese Outlook on Human Rights
10
作者 WANG Xigen ZHANG Qianqian 《The Journal of Human Rights》 2024年第5期989-1013,共25页
Centering on the systematic construction of human rights theories,Xi Jinping’s discourses on respecting and protecting human rights creatively put forward a series of original theoretical viewpoints and academic prop... Centering on the systematic construction of human rights theories,Xi Jinping’s discourses on respecting and protecting human rights creatively put forward a series of original theoretical viewpoints and academic propositions,profoundly revealing the basic connotation of a contemporary Chinese outlook on human rights and realizing all-around and deep-level innovation in the construction of a contemporary human rights theoretical system.In ontology,the four-in-one view of human rights of the political party,the government,society,and the people goes beyond the dichotomy between the political state and civil society.In element theory,the substantive view of human rights surpasses the formalist view of human rights.In category theory,the view of human rights focusing on the right to sub-sistence and the right to development transcends the view of human rights based on the individual’s right to freedom.In operation theory,the“development-based human rights path”goes beyond the“human rights-based development path.”In practice,the positive view of human rights based on the rule of law surpasses the negative view of human rights based on the rule of law. 展开更多
关键词 Xi Jinping’s discourse on respecting and protecting human rights human rights theory ORIGINAL contemporary Chinese outlook on human rights
下载PDF
Reproduction and Mortality of Re-introduced Przewalski's Horse Equus przewalskii in Hustai National Park, Mongolia 被引量:1
11
作者 Usukhjargal Dorj Bandi Namkhai 《Journal of Life Sciences》 2013年第6期623-629,共7页
The reproduction rate of Equus przewalskii in this study increased from year to year showing that the wild horses have already felt comfortable in the new environment and became acclimatized successfully. Of the mares... The reproduction rate of Equus przewalskii in this study increased from year to year showing that the wild horses have already felt comfortable in the new environment and became acclimatized successfully. Of the mares which were born in Hustai National Park and successfully reached reproductive age, 24.7% first gave birth at age 3 and 55.6% of them first gave birth at age 4. The most effective age range within the breeding population was 5 to 15, 25%-89% of them giving birth and an average during 2002-2011 of 72.9%. Of the Przewalski's horses which died, 65% were foals, 9.4% subadult male, 7.7% subadult female, 7.2% adult male and 10.6% were adult females. Causes of mortality differed by age and sex although wolf attacks accounted for the predominant number of deaths among foals and subadults. Stallions usually died of bad condition and injuries but parturition problems were common causes of death among mares. The mortality rate of foals (40% in 1993-2011) is a matter of great concern since foals born in Hustai National Park are the only gain component now after the active reintroduction period came to an end. A total of 109 foals were killed by wolves in 1993-2011 but 52% of them were younger than one month. 展开更多
关键词 Przewalski's horse reproduction MORTALITY sEAsONALITY wolf attack.
下载PDF
“One Core,Two Sources”:The Endogenous Logic of China’s Path to Develop Human Rights from the Perspective of“Two Integrations”
12
作者 LIU Ming 《The Journal of Human Rights》 2024年第5期1014-1030,共17页
The development of China’s human rights path is driven by both external and internal factors,influenced by general principles of human rights worldwide while also following China’s own endogenous logic.The concept o... The development of China’s human rights path is driven by both external and internal factors,influenced by general principles of human rights worldwide while also following China’s own endogenous logic.The concept of the“Two Integrations”reflects the continuous theoretical innovation of the Chinese Communist Party based on China’s national conditions,significantly illustrating the endogenous logic of China’s human rights path.Among these,the“basic principles of Marxism”occupy a“core”position within the endogenous logic of China’s human rights path,and to some extent,embody an understanding of the inherent laws of human rights.Meanwhile,“China’s specific realities”and“fine traditional Chinese culture”serve as the“living water sources”for the ongoing advancement of China’s human rights.The“Two Integrations”represent an intrinsic requirement of historical materialism and practical materialism.The logical structure of“One Core,Two Sources”explains the endogenous nature of China’s human rights path,offering both an interpretation of the driving forces behind China’s human rights path and a defense of its rationality. 展开更多
关键词 “two integrations endogenous nature of human rights “One Core Two sources China’s human rights path
下载PDF
Exploring the role of N-acetyltransferases in diseases:a focus on N-acetyltransferase 9 in neurodegeneration
13
作者 Prajakta Deshpande Anuradha Venkatakrishnan Chimata Amit Singh 《Neural Regeneration Research》 SCIE CAS 2025年第10期2862-2871,共10页
Acetyltransferases,required to transfer an acetyl group on protein are highly conserved proteins that play a crucial role in development and disease.Protein acetylation is a common post-translational modification pivo... Acetyltransferases,required to transfer an acetyl group on protein are highly conserved proteins that play a crucial role in development and disease.Protein acetylation is a common post-translational modification pivotal to basic cellular processes.Close to 80%-90%of proteins are acetylated during translation,which is an irreversible process that affects protein structure,function,life,and localization.In this review,we have discussed the various N-acetyltransferases present in humans,their function,and how they might play a role in diseases.Furthermore,we have focused on N-acetyltransferase 9 and its role in microtubule stability.We have shed light on how N-acetyltransferase 9 and acetylation of proteins can potentially play a role in neurodegenerative diseases.We have specifically discussed the N-acetyltransferase 9-acetylation independent function and regulation of c-Jun N-terminal kinase signaling and microtubule stability during development and neurodegeneration. 展开更多
关键词 acetyl-coenzyme A Alzheimer’s disease animal models cell death DROsOPHILA eye human disease c-Jun N-terminal kinase signaling N-Acetyltransferases N-acetyltransferase 9 NEURODEGENERATION
下载PDF
Effects of Cow’s Milk on Reproduction in ICR Male Mice
14
作者 YU-XIA MA NAOYUKI EBINE +2 位作者 KAZUO AOKI MASAHIRO KUSUNOKI AND JUNICHI MISUMI 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2009年第2期161-163,共3页
Objective To study the effects of Cow's milk on the reproduction in male mice. Methods Twenty-four male mice were divided randomly into two groups: milk group (M) and control group (C). Each mouse was given 10 m... Objective To study the effects of Cow's milk on the reproduction in male mice. Methods Twenty-four male mice were divided randomly into two groups: milk group (M) and control group (C). Each mouse was given 10 mL milk per day from 4 to 16 weeks in the group M. At the age of 17 weeks, all the mice were sacrificed. Results Serum testosterone was decreased in the group M (P=0.037). No significant difference was found in weight of testes, seminal vesicle or adrenal gland of mice between the groups C and M. However, the weight of seminal vesicle decreased when expressed in g/100 g body weight in the group M. Epididymal sperm concentration, motility, morphology, and sperm head number were not affected by milk. Conclusion Cow's milk has adverse effects on the reproductive system in ICR male mice. Further studies are needed to clarify the specific effects of milk on reproductive health. 展开更多
关键词 Cow's milk Male mice reproductive health
下载PDF
Characteristics of semen parameters of Malawian men from couples seeking assisted reproduction
15
作者 Fanuel Lampiao Anna Kutengule 《World Journal of Obstetrics and Gynecology》 2013年第4期181-184,共4页
AIM: To profile semen parameters of Malawian men seeking fertility testing. METHODS: Semen analysis is a key element in the fertility evaluation of men and permits male reproductive potential to be evaluated. Semen sa... AIM: To profile semen parameters of Malawian men seeking fertility testing. METHODS: Semen analysis is a key element in the fertility evaluation of men and permits male reproductive potential to be evaluated. Semen samples were collected from consenting men after 3-5 d of sexual abstinence. The samples were collected from 130 males; 78 were male partners of infertile couples while 52 were healthy semen donors. Seminal volume, motility and morphology were assessed. The results were analyzed on Prism 5. All data are expressed as mean ± SD. Student's t-test was used for statistical analysis. Differences were regarded as statistically signifi cant if P < 0.05.RESULTS: Semen volume, sperm concentration, progressive motility and normal morphology were significantly higher in the control group when compared to the participant group. On the other hand, no statistically signifi cant difference was found between the control group total sperm motility when compared to the participant group. Oligozoospermia was found in 25 cases, teratozoospermia detected in 17 cases and abnormal seminal plasma in 16 cases. Asthenozoospermia and azoosper-mia were found in 12 and 8 participants, respectively. This study has shown that most of the infertile patients seeking fertility testing had oligozoospermia. Teratozoospermia was the second most common abnormality found in the patients seeking fertility testing. CONCLUSION: Our study is in agreement with previous studies which reported that these parameters have been shown to be good predictors for fertilization. 展开更多
关键词 INFERTILITY human spermatozoa Assisted reproduction semen analysis
下载PDF
Impact of dietary nutrition regimens based on body composition analysis on bone metabolism in Alzheimer’s disease patients
16
作者 Xue-Lian Wang Yi-Ran Zhao +3 位作者 Ying Yu Zhi-Fang Mao Su-Xian Tan Shan-Shan Yu 《World Journal of Psychiatry》 2025年第2期59-68,共10页
BACKGROUND Body composition analysis(BCA)is primarily used in the management of conditions such as obesity and endocrine disorders.However,its potential in providing nutritional guidance for patients with Alzheimer’s... BACKGROUND Body composition analysis(BCA)is primarily used in the management of conditions such as obesity and endocrine disorders.However,its potential in providing nutritional guidance for patients with Alzheimer’s disease(AD)remains relatively unexplored.AIM To explore the clinical efficacy of BCA-based dietary nutrition scheme on bone metabolism in AD patients.METHODS This retrospective study included 96 patients with AD complicated by osteoporosis who were admitted to The Third Hospital of Quzhou between January 2023 and December 2024.Based on data from previous similar studies,the patients were randomly assigned to either a routine diet(RD)group(n=48)or a personalized nutrition(PN)group(n=48).The RD group received conventional dietary guidance,while the PN group received individualized diet intervention measures based on human BCA.The intervention period lasted for 12 weeks.Bone mineral density(BMD),body mass index(BMI),muscle mass,mineral content,osteocalcin,25-hydroxyvitamin D,procollagen type I N-terminal propeptide(PINP),beta C-terminal telopeptide of type I collagen(β-CTX),and serum calcium were measured and compared between the two groups before and 12 weeks after the intervention.RESULTS No significant differences were observed between groups in terms of age,sex,height,BMI,or other baseline data(P>0.05).In both groups,BMI did not show significant changes after the intervention(P>0.05),whereas muscle mass and mineral content were significantly increased(P<0.05).After the intervention,BMI in the PN group did not differ significantly from that of the RD group,but muscle mass and mineral content were significantly higher in the PN group(P<0.05).After the intervention,a higher proportion of patients in the PN group had a T score>-1 compared to the RD group(P<0.05).The mini-mental state examination(MMSE)score was similar in both groups before the intervention.However,12 weeks after the intervention,the MMSE score in the PN group was significantly higher than that in the RD group(P<0.05).In both groups,the MMSE score significantly increased 12 weeks post-intervention compared to pre-intervention levels(P<0.05).Before the intervention,the levels of osteocalcin,serum calcium,PINP,β-CTX,and 25-hydroxyvitamin D were not significantly different between the two groups(P>0.05).After 12 weeks of intervention,the PN group exhibited higher levels of osteocalcin,serum calcium,and 25-hydroxyvitamin D,as well as lower levels of PINP andβ-CTX,compared to the RD group(P<0.05).In both groups,osteocalcin,serum calcium,and 25-hydroxyvitamin D levels were significantly higher,while PINP andβ-CTX levels were significantly lower after 12 weeks of intervention compared to baseline(P<0.05).CONCLUSION The human BCA-based dietary nutrition regimen plays a crucial role in improving BMD and bone metabolism,with effects that surpass those of conventional nutrition strategies.The findings of this study provide strong evidence for the nutritional management of AD patients. 展开更多
关键词 Alzheimer’s disease Bone metabolism disorders human body composition analysis Dietary nutrition Bone homeostasis Dietary management
下载PDF
Human Carrying Capacity of Rangeland Resources in China′s Mountain Areas
17
作者 鲍文 《Animal Husbandry and Feed Science》 CAS 2009年第4期7-11,20,共6页
Based on analysis of the development potential of rangeland resources in China's mountain areas, the paper makes analysis and forecast in human carrying capacity of rangeland resources. It provides some reference for... Based on analysis of the development potential of rangeland resources in China's mountain areas, the paper makes analysis and forecast in human carrying capacity of rangeland resources. It provides some reference for drawing up the development strategy in mountain areas. 展开更多
关键词 China's mountain areas Rangeland resources human carrying capacity
下载PDF
Genotypic analysis on the ORF-K1 gene of human herpesvirus 8 from patients with Kaposi's sarcoma in Xinjiang,China 被引量:14
18
作者 Mijiti Juhear 《Journal of Genetics and Genomics》 SCIE CAS CSCD 北大核心 2008年第11期657-663,共7页
Human herpesvirus 8 (HHV-8) is thought to be essential for the development of all forms of Kaposi's sarcoma (KS). HHV-8 DNA is present virtually in all KS tumor biopsy samples. Genes at both ends of the HHV-8 gen... Human herpesvirus 8 (HHV-8) is thought to be essential for the development of all forms of Kaposi's sarcoma (KS). HHV-8 DNA is present virtually in all KS tumor biopsy samples. Genes at both ends of the HHV-8 genome have been shown to vary considerably. Seven major molecular subtypes of HHV-8 were defined based on the amino acid sequence of the open reading frame K1 (ORF-K1), generally known as A, B, C, D, E, F, and Z. Most strains collected worldwide were clustered into two subtypes (A and C). Here, the K1/VRI region of HHV-8 was amplified by nested PCR in 22 (81.48%) of 27 cases from Xinjiang Uygur Autonomous Region, a province in northwestern China. Phylogenetic analysis on the basis of the K1/VR1 amino acid sequence indicated that the majority of these KS patients were infected by subtype C HHV-8 (n = 18, including 15 belonging to the C2 group), and several by subtype A (n = 4, including 3 being the A1 group). This is the first report of subtype A HHV-8 in China. Furthermore, the correlations between different forms and lesions of KS and different subtypes of HHV-8 were analyzed. The findings showed that subtype A HHV-8 resulted in significantly more frequent mucosal KS lesions than subtype C. However, there was no obvious correlation between different forms of KS and different subtypes of HHV-8. 展开更多
关键词 Kaposi's sarcoma human herpesvirus 8 subtype A K1 XINJIANG
下载PDF
Effects of hepatitis B virus infection on human sperm chromosomes 被引量:53
19
作者 Jian-MinHuang Tian-HuaHuang +6 位作者 Huan-YingQiu Xiao-WuFang Tian-GangZhuang Hong-XiLiu Yong-HuaWang, Li-ZhiDeng Jie-WenQiu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2003年第4期736-740,共5页
AIM: To evaluate the level of sperm chromosome aberrations in male patients with hepatitis B, and to directly detect whether there are HBV DNA integrations in sperm chromosomes of hepatitis B patients.METHODS: Sperm c... AIM: To evaluate the level of sperm chromosome aberrations in male patients with hepatitis B, and to directly detect whether there are HBV DNA integrations in sperm chromosomes of hepatitis B patients.METHODS: Sperm chromosomes of 14 tested subjects (5healthy controls, 9 patients with HBV infection, including 1with acute hepatitis B, 2 with chronic active hepatitis B, 4with chronic persistent hepatitis B, 2 chronic HBsAg carriers with no clinical symptoms) were prepared using interspecific in vitro fertilization between zona-free golden hamster ova and human spermatozoa, and the frequencies of aberration spermatozoa were compared between subjects of HBV infection and controls. Fluorescence in situ hybridization (FISH) to sperm chromosome spreads was carried out with biotin-labeled full length HBV DNA probe to detect the specific HBV DNA sequences in the sperm chromosomes.RESULTS: The total frequency of sperm chromosome aberrations in HBV infection group (14.8%, 33/223) was significantly higher than that in the control group (4.3%,5/116). Moreover, the sperm chromosomes in HBV infection patients commonly presented stickiness, clumping, failure to staining, etc, which would affect the analysis of sperm chromosomes. Specific fluorescent signal spots for HBV DNA were seen in sperm chromosomes of one patient with chronic persistent hepatitis. In 9 (9/42) sperm chromosome complements containing fluorescent signal spots, one presented 5 obvious FISH spots, others presented 2 to 4signals. There was significant difference of fluorescence intensity among the signal spots. The distribution of signal sites among chromosomes was random.CONCLUSION: HBV infection can bring about mutagenic effects on sperm chromosomes. Integrations of viral DNA into sperm chromosomes which are multisites and nonspecific, can further increase the instability of sperm chromosomes. This study suggested that HBV infection can create extensively hereditary effects by alteration genetic constituent and/or induction chromosome aberrations, as well as the possibility of vertical transmission of HBV via the germ line to the next generation. 展开更多
关键词 ADULT Chromosomes human DNA Viral Hepatitis B Antigens Hepatitis B surface Antigens Hepatitis B Chronic humans In situ Hybridization Fluorescence KARYOTYPING Male Reference Values Research support Non-U.s. Gov't sEMEN sPERMATOZOA
下载PDF
Antitumor effect and mechanism of Gecko on human esophageal carcinoma cell lines in vitro and xenografted sarcoma 180 in Kunming mice 被引量:32
20
作者 Fei Liu Jian-Gang Wang +3 位作者 Shu-Ying Wang Yan Li Yin-Ping Wu Shou-Min Xi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第25期3990-3996,共7页
AIM: To investigate the anti-tumor effect of Chinese medicine Gecko on human esophageal carcinoma cell lines and xenografted sarcoma 180 in Kunming mice and its mechanism. METHODS: The serum pharmacological method was... AIM: To investigate the anti-tumor effect of Chinese medicine Gecko on human esophageal carcinoma cell lines and xenografted sarcoma 180 in Kunming mice and its mechanism. METHODS: The serum pharmacological method was used in vitro . The growth rates of the human esophageal carcinoma cells (EC9706 or EC1) were measured by a modifi ed 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The transplanted tumor model of the mouse S180 sarcoma was established. Fifty mice were randomly divided into fi ve groups (n = 10). Three Gecko groups were treated respectively with oral administration of Gecko powder at a daily dose of 13.5 g/kg, 9 g/kg, and 4.5 g/kg. The negative group (NS group) was treated with oral administration of an equal volume of saline and the positive group (CTX group) was treated with 100 mg/kg Cytoxan by intraperitoneal injection at the fi rst day. After 2 wk of treatment, the anti-tumor activity was evaluated by tumor tissue weighing. The impact on immune organ was detected based on the thymus index, spleen index, phagocytic rate and phagocytic index. The protein expression of vascular endothelingrowth factor (VEGF) and basic fibroblast growth factor (bFGF) were detected by immunohistochemistry. The cell apoptotic rate was detected by terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end labeling (TUNEL) assay. RESULTS: The A value in each group treated with Gecko after 72 h was reduced signif icantly in EC9706 and in EC1. The tumor weight in each group of Gecko was decreased signifi cantly (1.087 ± 0.249 vs 2.167 ± 0.592; 1.021 ± 0.288 vs 2.167 ± 0.592; 1.234 ± 0.331 vs 2.167 ± 0.592; P < 0.01, respectively). However, the thymus index and Spleen index of mice in Gecko groups had no significant difference compared with the NS group. The immunoreactive score of VEGF and bFGF protein expression of each Gecko group by immunohistochemical staining were lowered signifi cantly. The apoptosis index (AI) of each group was increased progressively with increase of dose of Gecko by TUNEL. CONCLUSION: Gecko has anti-tumor effects in vitro and in vivo; induction of tumor cell apoptosis and the down-regulation of protein expression of VEGF and bFGF may be contributed to anti-tumor effects of Gecko. 展开更多
关键词 Chinese medicine Gecko human esophagealcarcinoma cells s180 sarcoma of mouse Vascularendothelin growth factor Basic fibroblast: growth factor Apoptosis
下载PDF
上一页 1 2 93 下一页 到第
使用帮助 返回顶部