Objective To study genetic polymorphism of 6 Y chromosomal STR in Hui ethnic group living in Ningxia Hui ethnic autonomous region, in order to evaluate their usefulness in forensic science and enrich the Chinese genet...Objective To study genetic polymorphism of 6 Y chromosomal STR in Hui ethnic group living in Ningxia Hui ethnic autonomous region, in order to evaluate their usefulness in forensic science and enrich the Chinese genetic information resources. Methods We investigated 101 unrelated, healthy, male individuals of Hui ethnic group and studied their allelic frequency distribution and haplotype diversity of 6 Y chromosomal STR. Primer for each loci was labeled with the fluorescent by FAM (blue) or TAMRA(yellow). The data of Hui ethnic group were generated co-amplification, GeneScan, genotype, and genetic distribution analysis. Results 31 alleles and 43 phenotype(DYS385) were detected, with the frequencies ranging from 0.0099-0.7129. Out of a total of 101 individuals, 96 showed different haplotypes; 91 were unique; 5 were found 2 times. The haplotype diversity for 6 Y-STR loci was 0.9990. Conclusion The date obtained can be valuable for individual identification, paternity testing in forensic fields and for population genetics because of 6 Y-STR loci high polymorphism.展开更多
Background:Stroke is not only high in morbidity and mortality but also poses a great burden of disease and it is also the most reported disease in Chinese medicine systematic reviews.Therefore,the quality of such evid...Background:Stroke is not only high in morbidity and mortality but also poses a great burden of disease and it is also the most reported disease in Chinese medicine systematic reviews.Therefore,the quality of such evidence couldn’t be ignored.This study aims to use a measurement tool to assess systematic reviews(AMSTAR)to assess the methodological qualities of SR/Meta-analyses of Chinese medicine on stroke.Methods:Systematic searching of seven electronic databases and PROSPERO registration platform was carried out.Two researchers separately selected studies,extracted bibliographical characteristics and scored every included study independently after training.Total score and the proportion of each item completion were explored in different subgroup comparisons.Spearman rank correlation and multivariable logistic regression were used to measure the association between bibliographical characteristics and total score or each item.Results:Total average score of AMSTAR 1.0 checklists of 234 systematic reviews/Meta-analyses was 4.47(95%CI 4.27–4.68)and the qualities were unsatisfied especially in terms of priori setting(2.14%),grey literature inclusion(5.13%),providing a list of excluded studies(2.14%)and conflict of interest(0.00%).No improvement was found in 3 years even after the publication of AMSTAR.Chinese or nonregistered systematic reviews/Meta-analyses showed even worse methodological qualities(P<0.01).Positive correlation was found between individual items and number of pages,number of authors,research questions,languages or Meta-analyse separately(P<0.05).Conclusion:The methodological qualities of systematic reviews/Meta-analyses of Chinese medicine on stroke are poor especially Chinese studies,non-registered studies,brief studies and studies without Meta-analyse or cooperation.There is no obvious improvement over these years even after the publication of AMSTAR tool,so it is urgent to promote the use of AMSTAR or develop other efficient methods to control the quantity and monitor the quality in future.展开更多
文摘Objective To study genetic polymorphism of 6 Y chromosomal STR in Hui ethnic group living in Ningxia Hui ethnic autonomous region, in order to evaluate their usefulness in forensic science and enrich the Chinese genetic information resources. Methods We investigated 101 unrelated, healthy, male individuals of Hui ethnic group and studied their allelic frequency distribution and haplotype diversity of 6 Y chromosomal STR. Primer for each loci was labeled with the fluorescent by FAM (blue) or TAMRA(yellow). The data of Hui ethnic group were generated co-amplification, GeneScan, genotype, and genetic distribution analysis. Results 31 alleles and 43 phenotype(DYS385) were detected, with the frequencies ranging from 0.0099-0.7129. Out of a total of 101 individuals, 96 showed different haplotypes; 91 were unique; 5 were found 2 times. The haplotype diversity for 6 Y-STR loci was 0.9990. Conclusion The date obtained can be valuable for individual identification, paternity testing in forensic fields and for population genetics because of 6 Y-STR loci high polymorphism.
基金the National Natural Science Funding(81904055)of China.
文摘Background:Stroke is not only high in morbidity and mortality but also poses a great burden of disease and it is also the most reported disease in Chinese medicine systematic reviews.Therefore,the quality of such evidence couldn’t be ignored.This study aims to use a measurement tool to assess systematic reviews(AMSTAR)to assess the methodological qualities of SR/Meta-analyses of Chinese medicine on stroke.Methods:Systematic searching of seven electronic databases and PROSPERO registration platform was carried out.Two researchers separately selected studies,extracted bibliographical characteristics and scored every included study independently after training.Total score and the proportion of each item completion were explored in different subgroup comparisons.Spearman rank correlation and multivariable logistic regression were used to measure the association between bibliographical characteristics and total score or each item.Results:Total average score of AMSTAR 1.0 checklists of 234 systematic reviews/Meta-analyses was 4.47(95%CI 4.27–4.68)and the qualities were unsatisfied especially in terms of priori setting(2.14%),grey literature inclusion(5.13%),providing a list of excluded studies(2.14%)and conflict of interest(0.00%).No improvement was found in 3 years even after the publication of AMSTAR.Chinese or nonregistered systematic reviews/Meta-analyses showed even worse methodological qualities(P<0.01).Positive correlation was found between individual items and number of pages,number of authors,research questions,languages or Meta-analyse separately(P<0.05).Conclusion:The methodological qualities of systematic reviews/Meta-analyses of Chinese medicine on stroke are poor especially Chinese studies,non-registered studies,brief studies and studies without Meta-analyse or cooperation.There is no obvious improvement over these years even after the publication of AMSTAR tool,so it is urgent to promote the use of AMSTAR or develop other efficient methods to control the quantity and monitor the quality in future.
