scholarly journals Weak Association Between the Glutamate Decarboxylase 1 Gene (GAD1) and Schizophrenia in Han Chinese Population

2021 ◽  
Vol 15 ◽  
Author(s):  
Luwen Zhang ◽  
Zhen Li ◽  
Qing Liu ◽  
Minglong Shao ◽  
Fuping Sun ◽  
...  
Keyword(s):  
Glutamate Decarboxylase ◽  
Chinese Population ◽  
Case Control ◽  
Han Chinese ◽  
Healthy Controls ◽  
Replication Sample ◽  
Han Chinese Population ◽  
Discovery Sample ◽  
First Onset ◽  
Independent Replication

ObjectivesSchizophrenia (SZ) is a complex psychiatric disorder with high heritability, and genetic components are thought to be pivotal risk factors for this illness. The glutamate decarboxylase 1 gene (GAD1) was hypothesized to be a candidate risk locus for SZ given its crucial role in the GABAergic neurotransmission system, and previous studies have examined the associations of single nucleotide polymorphisms (SNPs) spanning the GAD1 gene with SZ. However, inconsistent results were obtained. We hence examined the associations between GAD1 SNPs and SZ in two independent case-control samples of Han Chinese ancestry.Materials and MethodsTwo Han Chinese SZ case-control samples, referred as the discovery sample and the replication sample, respectively, were recruited for the current study. The discovery sample comprised of 528 paranoid SZ cases (with age of first onset ≥ 18) and 528 healthy controls; the independent replication sample contained 1,256 early onset SZ cases (with age of first onset < 18) and 2,661 healthy controls. Logistic regression analysis was performed to examine the associations between GAD1 SNPs and SZ.ResultsTen SNPs covering GAD1 gene were analyzed in the discovery sample, and two SNPs showed nominal associations with SZ (rs2241165, P = 0.0181, OR = 1.261; rs2241164, P = 0.0225, OR = 1.219). SNP rs2241164 was also nominally significant in the independent replication sample (P = 0.0462, OR = 1.110), and the significance became stronger in a subsequent meta-analysis combining both discovery and replication samples (P = 0.00398, OR = 1.138). Nevertheless, such association could not survive multiple corrections, although the effect size of rs2241164 was comparable with other SZ risk loci identified in genome-wide association studies (GWAS) in Han Chinese population. We also examined the associations between GAD1 SNPs and SZ in published datasets of SZ GWAS in East Asians and Europeans, and no significant associations were observed.ConclusionWe observed weak associations between GAD1 SNPs and risk of SZ in Han Chinese populations. Further analyses in larger Han Chinese samples with more detailed phenotyping are necessary to elucidate the genetic correlation between GAD1 SNPs and SZ.

scholarly journals Association between Two Resistin Gene Polymorphisms and Metabolic Syndrome in Jilin, Northeast China: A Case-Control Study

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Yingli Fu ◽  
Yaqin Yu ◽  
Yanhua Wu ◽  
Yueyue You ◽  
Yangyu Zhang ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Gene Polymorphisms ◽  
Chinese Population ◽  
Case Control Study ◽  
International Diabetes Federation ◽  
Case Control ◽  
Han Chinese ◽  
Jilin Province ◽  
Han Chinese Population ◽  
Control Study

Metabolic syndrome (MetS) is a significant health care problem worldwide and is characterized by increased fasting glucose and obesity. Resistin is a protein hormone produced both by adipocytes and immunocompetent cells, including those residing in adipose tissue, and is believed to modulate glucose tolerance and insulin action. This study examined the association of resistin gene polymorphisms, rs1862513 and rs3745368, and related haplotypes with the development of metabolic syndrome in a Han Chinese population. This case-control study was performed on 3792 subjects, including 1771 MetS cases and 2021 healthy controls from the Jilin province of China. Metabolic syndrome was defined according to the criteria of the International Diabetes Federation (IDF). Logistic regression analysis was used to estimate the relationship between gene polymorphism and MetS. Our results showed that there were no significant associations between MetS and the genotype distributions in four kinds of inheritance models, allele frequencies, and related haplotypes of resistin gene polymorphisms rs1862513 and rs3745368 (allpvalues > 0.05). Based on our study findings, we concluded that mutations in resistin genes are not associated with the presence of MetS in a Han Chinese population from Jilin province in China.

A Case-Control Study of ABCB1, ABCB6, and ABCG1 Polymorphisms and Schizophrenia in a Han Chinese Population

2019 ◽  
Vol 78 (3) ◽  
pp. 113-117 ◽  
Author(s):  
Gaini Ma ◽  
Xiaoye Huang ◽  
Yan Bi ◽  
Fei Xu ◽  
Weibo Niu ◽  
...  
Keyword(s):  
Chinese Population ◽  
Case Control Study ◽  
Case Control ◽  
Han Chinese ◽  
Han Chinese Population ◽  
Control Study

scholarly journals A Promoter Region Polymorphism inPDCD-1Gene Is Associated with Risk of Rheumatoid Arthritis in the Han Chinese Population of Southeastern China

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
CuiPing Liu ◽  
JueAn Jiang ◽  
Li Gao ◽  
XiaoHan Hu ◽  
FengMing Wang ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
T Cells ◽  
Chinese Population ◽  
Direct Sequencing ◽  
Han Chinese ◽  
Chinese Patients ◽  
Sequencing Analysis ◽  
Healthy Controls ◽  
Han Chinese Population ◽  
Increased Risk

Objective. Programmed cell death 1 (PD-1) induces negative signals to T cells during interaction with its ligands and is therefore a candidate gene in the development of autoimmune diseases such as rheumatoid arthritis (RA). Herein, we investigate the association ofPDCD-1polymorphisms with the risk of RA among Chinese patients and healthy controls.Methods. Using the PCR-direct sequencing analysis, 4PDCD-1SNPs (rs36084323, rs11568821, rs2227982, and rs2227981) were genotyped in 320 RA patients and 309 matched healthy controls. Expression of PD-1 was determined in peripheral blood lymphocytes by flow cytometry and quantitative real-time reverse transcriptase polymerase chain reaction.Results. We observed that the GG genotype of rs36084323 was associated with a increased risk for developing RA (OR 1.70, 95% 1.11–2.61,P=0.049). Patients carrying G/G genotype displayed an increased mRNA level of PD-1(P=0.04)compared with A/A genotype and healthy controls. Meanwhile, patients homozygous for rs36084323 had induced basal PD-1 expression on activated CD4+ T cells.Conclusion. ThePDCD-1polymorphism rs36084323 was significantly associated with RA risk in Han Chinese population. This SNP, which effectively influenced the expression of PD-1, may be a biomarker of early diagnosis of RA and a suitable indicator of utilizing PD-1 inhibitor for treatment of RA.

scholarly journals Meta-Analysis of the ACE Gene Polymorphism in Cerebral Infarction

2009 ◽  
Vol 36 (1) ◽  
pp. 20-25 ◽  
Author(s):  
Hong-miao Tao ◽  
Bei Shao ◽  
Guo-zhong Chen
Keyword(s):  
Cerebral Infarction ◽  
Chinese Population ◽  
Large Scale ◽  
Meta Analysis ◽  
Case Control ◽  
Han Chinese ◽  
Genetic Associations ◽  
Case Control Studies ◽  
Han Chinese Population ◽  
Ace Gene

Background:The angiotensin-1 converting enzyme (ACE) gene is known to have two polymorphic alleles insertion/deletion(I/D). People with the DD genotype have been shown to be at greater risk of cerebral infarction, but only in some studies. Identification of cerebral infarction susceptibility genes and quantification of associated risks have been hampered by conflicting results from underpowered case-control studies. This meta-analysis was made to look specifically into the genetics of cerebral infarction among Han Chinese population.Methods:Genetic associations studies published from January 1, 1990 to December 30, 2007 were collected from databases of MEDLINE, EMBASE, CBM and CNKI. Data were extracted using standardised forms and pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated.Results:Twenty-nine original case-control studies of Han Chinese population, comprising 3654 patients with cerebral infarction and 3058 controls were included in the meta-analysis. Using the random effects model, the pooled ORs of ACE DD genotype VS ID+ II was 1.91 (95% CI 1.56 to 2.34, P<0.00001).Conclusions:These data suggest that the ACE DD genotype may be a risk factor for cerebral infarction in Han Chinese population. A large scale case-control study is needed to clarify the functional effect of the polymorphism of the ACE I/D gene in the pathogenesis of cerebral infarction in Han Chinese population.

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