1.Genetic polymorphism of 23 autosomal STR loci in Han population from Yuncheng, Shanxi Province.
Hongyan GAO ; Jian YU ; Xiaodan FENG ; Xiaohong WU ; Li LUO ; Xianfeng LI ; Chao LIU ; Pengyu CHEN
Journal of Central South University(Medical Sciences) 2021;46(4):351-360
OBJECTIVES:
Due to the genetic feature of high diversity than other DNA markers, short tandem repeat (STR) plays key roles in forensic, anthropology, and population genetics. Newly introduced multiple STR kit is more valuable because of the greatly improved discriminatory power with the increase in the number of STR loci. The genetic polymorphic data are essential for the application and research in specific population. This study aims to investigate the genetic polymorphism of Han population residing in Yuncheng district, Shanxi Province, to evaluate the application of 23 STR loci in forensic personal identification and paternity test, and to explore the genetic relationship of Han population between Yuncheng and other populations.
METHODS:
A total of 23 STR loci were amplified from 525 healthy unrelated individuals from the Han nationality in Yuncheng, Shanxi Province using the AGCU EX25 amplification kit. The products were detected and separated by ABI 3500 Genetic Analyzer. Alleles were genotyped by GeneMapper ID (Version 3.2) software, and corresponding frequencies and forensic parameters were calculated. We calculated the genetic distance and plotted the neighboring-joining tree with other 13 population.
RESULTS:
The allele frequency of the 23 STRs ranged from 0.0010 to 0.5090. No deviation from Hardy-Weinberg equilibrium (
CONCLUSIONS
These 23 STRs are highly genetic polymorphic and informative in the Han population of Yuncheng, Shanxi Province, which can provide basic data for forensic personal identification, paternity testing, and population genetic research.
Asian Continental Ancestry Group/genetics*
;
China
;
Ethnic Groups/genetics*
;
Gene Frequency
;
Genetic Loci
;
Genetics, Population
;
Humans
;
Microsatellite Repeats/genetics*
;
Polymorphism, Genetic
3.Physical Activity and Sedentary Behaviors among Chinese Children: Recent Trends and Correlates.
Xi YANG ; Alice Waiyi LEUNG ; Russell JAGO ; Shi Cheng YU ; Wen Hua ZHAO
Biomedical and Environmental Sciences 2021;34(6):425-438
Objective:
This study was aimed at examining the trends and correlates of physical activity (PA) and sedentary behaviors among Chinese children.
Methods:
A total of 4,341 subjects (6,936 observations) aged 6-17 years who participated in the China Health and Nutrition Survey (2004-2015) were included. Of the subjects, 41% participated in the survey twice or more. Random-effects ordinal regression models and repeated-measures mixed-effects models were used to examine the PA trends. Quantile regression models were applied to examine the factors influencing PA and sedentary behaviors.
Results:
From 2004 to 2015, the prevalence of physical inactivity among Chinese children aged 6-17 years increased by 5.5% [odds ratio (
Conclusions
A declining PA trend among Chinese children aged 6-17 years was observed from 2004 to 2015, and certain subgroups and geographical areas are at higher risk of physical inactivity.
Adolescent
;
Asian Continental Ancestry Group/statistics & numerical data*
;
Child
;
Child Behavior/ethnology*
;
China/epidemiology*
;
Exercise
;
Female
;
Humans
;
Male
;
Nutrition Surveys
;
Regression Analysis
;
Sedentary Behavior/ethnology*
4.Recent Trends in Sedentary Behaviors among Chinese Children According to Demographic and Social Characteristics.
Xi YANG ; Wai Yi LEUNG ; Yuan Sheng CHEN ; Yi Fei OUYANG ; Wen Hua ZHAO
Biomedical and Environmental Sciences 2021;34(8):593-605
Objective:
This study aims to explore trends in sedentary behavior among Chinese children aged 6-17 years per demographic and social characteristics.
Methods:
A total of 4,341 children aged 6-17 years who participated in the
Results:
From 2004 to 2015, sedentary time among children aged 6-17 years increased from 23.9 ± 0.6 h/week to 25.7 ± 0.6 h/week (
Conclusions
Sedentary time among Chinese children aged 6-17 years showed an upward trend from 2004 to 2015, especially among children residing in rural areas and regions with low urbanization levels.
Adolescent
;
Asian Continental Ancestry Group
;
Child
;
China
;
Female
;
Health Surveys
;
Humans
;
Male
;
Sedentary Behavior
;
Socioeconomic Factors
;
Urbanization
5.Rare variants of HSPB1 are probably associated with amyotrophic lateral sclerosis.
Junyi CHEN ; Xiangyi LIU ; Yingsheng XU ; Dongsheng FAN
Journal of Southern Medical University 2021;41(1):75-78
OBJECTIVE:
To explore the association between rare HSPB1 variants and amyotrophic lateral sclerosis (ALS).
METHODS:
We performed next-generation sequencing for 166 Chinese ALS patients to screen for possible pathogenic rare variants of HSPB1. The control individuals were obtained from 1000 Genome Project and an in-house whole-exome sequencing database. The Sequence Kernel Association Test (SKAT) and the SKAT-optimal test (SKAT-O) were used to identify the association between rare HSPB1 variants and ALS.
RESULTS:
We identified 3 possible pathogenic rare variants of HSPB1 (all were missenses), including c.379C>T (p.R127W), c.446A>C (p.D149A) and c.451A>C (p.T151P). Compared with 1000 Genome Project, SKAT p=3.61×10
CONCLUSIONS
Rare variants of HSPB1 are probably associated with the pathogenesis of ALS.
Amyotrophic Lateral Sclerosis/genetics*
;
Asian Continental Ancestry Group
;
Heat-Shock Proteins
;
Heterozygote
;
High-Throughput Nucleotide Sequencing
;
Humans
;
Molecular Chaperones
;
Phenotype
9.Guideline on optimal blood pressure range for Chinese oldest old.
Chinese Journal of Preventive Medicine 2021;55(3):335-338
Hypertension is a major problem of public health that endangers the health of the oldest old. However, the current guidelines for hypertension management do not uniformly diagnose hypertension among the oldest old, nor recommend a normal blood pressure range, which is not convictive enough to support the decision making to the prevention of blood pressure-related adverse events. This guideline gives guiding opinions on optimal blood pressure range for the Chinese oldest old, which applies to the staff of medical and health institutions at all levels nationwide to evaluate the blood pressure levels of the oldest old. It includes the sections of general principles, methods and standards of blood pressure evaluation, measurement conditions, specifications of blood pressure measurement, implementation approaches, etc. The guideline has important directive significance for improving the blood pressure management and decision-making level of the Chinese oldest old.
Aged, 80 and over
;
Asian Continental Ancestry Group
;
Blood Pressure
;
Blood Pressure Determination
;
China
;
Humans
;
Hypertension/prevention & control*

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