CLTCL1 基因 rs1061325 位点多态性与中国 汉族精神分裂症的关联分析

目的 探讨中国汉族人群网格蛋白重链 1（CLTCL1）基因 rs1061325 多态性与精神分裂症 的相关性。方法 选取 2007— 2008 年在上海交通大学医学院附属精神卫生中心门诊或住院的 662 例 精神分裂症患者作为病例组，选取同期的 414 名健康志愿者作为对照组。采用 TaqMan 探针基因分型技 术对两组的 CLTCL1 基因 rs1061325 位点进行分型，采用阳性与阴性症状量表（PANSS）对病例组进行精 神症状严重程度评定，并分析 PANSS 评分与不同基因型的相关性。结果 病例组与对照组的 rs1061325 等位基因和基因型频率分布比较，差异无统计学意义（χ2 =0.25、0.28，P=0.62、0.87）；在共显性、显性、隐 性、超显性、加性遗传模式下基因型分布差异也无统计学意义（P＞ 0.05），rs1061325 基因型多态性对精 神分裂症患者的发病年龄［（24.15±6.71）岁］、病程［（31.23±9.49）年］和 BMI［（26.46±5.28）kg/m2 ］也均 无明显影响（F=1.15、0.33、0.75，P=0.32、0.72、0.48），rs1061325 基因型多态性与 PANSS 阳性症状分、阴 性症状分、一般精神病理分及 PANSS 总分无相关性（F=1.26、0.37、0.34、0.49，P=0.29、0.69、0.72、0.62）。 结论 在中国汉族人群中，CLTCL1 基因 rs1061325 位点与精神分裂症无关联。     

中国汉族人群磷酸酶与张力蛋白同源物基因多态性与早发性精神分裂症的关联研究

目的：探讨中国汉族人群磷酸酶与张力蛋白同源物（phosphataseandtensinhomolog,PTEN）基因多态性与早发性精神分裂症（EOS）的关系。方法：纳入270例EOS患者和447名健康对照,用SNaPshot技术对PTEN的标签SNP进行基因分型,比较其等位基因、基因型、单体型分布频率在两组间有无差异。结果：rs2299941的等位基因分布在两组间存在边缘统计学差异（X2=4．454,P：0．035,校正P=0．175）,GG基因型在隐性遗传模式下显著降低EOS的发生风险（OR=0．51,95％CI=0．31～0．85,P=0．007）。rs17562384的CC基因型在隐性遗传模式下显著增加EOS的发生风险（OR：2．23,95％CI=1．01～4．91,P=0．047）。单体型GTr（rs2299941、rsl7562384、rs532678）的分布频率在患者组与对照组间存在边缘统计学差异（O．308VS0．364;x2=4．677,P=0．031,校正P=0．057）。结论：中国汉族人群PTEN基因多态性与EOS易感性有关。     

汉族人群NTRK2基因多态性与精神分裂症关联研究

目的在中国汉族人群中探讨神经营养性酪氨酸激酶2型受体(NTRK2)基因rs1187272多态性与精神分裂症的关联性。方法采用TAQMAN探针SNP基因分型技术在中国汉族人群中对100例精神分裂症患者及119例正常对照者进行NTRK2基因rs1187272的分型,并进行等位基因及基因型比较。结果患者组与正常对照组之间,NTRK2基因rs1187272多态的等位基因分布(χ2=1.78,df=1,P>0.05)和基因型分布(χ2=1.01,df=2,P>0.05)无明显差异;男、女患者与正常对照组之间,等位基因分布(χ2=2.70,df=3,P>0.05)和基因型分布(χ2=4.72,df=6,P>0.05)也无明显差异;但在不同发病年龄组之间,NTRK2基因rs1187272多态性等位基因分布(χ2=5.53,df=1,P=0.02)存在显著差异,在早发病患者组与对照组之间比较,NTRK2基因rs1187272多态性等位基因分布存在显著差异(χ2=4.38,df=1,P=0.04)。结论在中国汉族人群中NTRK2基因rs1187272多态性与早发精神分裂症(发病年龄≤25岁)存在关联,其可能是早发精神分裂症的易...     

IL18R1基因多态性与中国汉族精神分裂症的关联性分析

目的:探讨IL18受体IL18R1基因多态性与中国汉族精神分裂症的关系。方法:采用病例对照研究方法,选取1 174例精神分裂症患者(病例组)与1 120名正常健康对照者(对照组),利用连接酶检测-聚合酶链反应(LDR-PCR)方法对IL18R1基因多态位点rs1035130进行基因分型,观察其等位基因及基因型与精神分裂症发病风险的关系。结果:rs1035130的基因型与等位基因频率在病例组与正常对照组中的分布差异无统计学意义(P0.05)。结论:IL18R1基因rs1035130多态性可能与中国汉族精神分裂症无关。     

DISC1基因rs821633位点多态性与中国汉族人群精神分裂症的相关性研究（英文）

背景:既往研究报告显示精神分裂症断裂基因1(Disrupted-in-Schizophrenia 1 gene,DISC1)中不同的单核苷酸多态性(single nucleotide polymorphisms,SNP)与精神分裂症密切相关,但目前尚无研究评估了SNP与精神分裂症发病年龄之间的关系。目的:探讨DISC1基因中rs821633位点的SNP和中国汉族精神分裂症患者的发病及首发年龄的相关性。方法:我们采用TaqM an基因分型技术对315例19岁之前发病的精神分裂症患者(即"早发性")、407例19岁后发病的精神分裂症患者(即"非早发性")和482名健康对照进行DISC1基因rs821633位点的SNP检测。我们使用生存分析研究rs821633(C)位点的危险等位基因与精神分裂症患者首发年龄之间的关系。结果:相比健康对照组,rs821633位点C/C基因型和C等位基因型频率分布在早发性(X~2=7.17,df=1,p=0.007;X~2=7.20,df=2,p=0.032)和晚发性(X~2=5.36,df=1,p=0.022;X~2=6.58,df=2,p=0.041)精神分裂症患者中显著较高。然而,C/C基因型或C等位基因型的携带率在早发和晚发性精神分裂症患者中没有显著差异。Kaplan-Meier生存分析发现rs821633(C)危险等位基因与精神分裂症首发年龄之间没有显著相关性。结论:我们证实了DISC1基因rs821633位点多态性的SNP与中国汉族人群精神分裂症之间存在相关性,但未发现rs821633(C)危险等位基因与精神分裂症首发年龄之间的相关性。     

多巴胺D2受体基因rs1800497多态性与精神分裂症的关联分析

目的 探讨中国汉族人群多巴胺D2受体（DRD2）基因rs1800497多态性与精神分裂症发病的关系及其与性别的关联性.方法 采用TaqMan法检测200例精神分裂症患者（患者组）和219名健康对照（对照组）DRD2基因rs1800497单核苷酸多态性（SNP）,并对等位基因、基因型频率进行比较.结果 患者组与对照组rs1800497等位基因分布和基因型分布差异均无统计学意义（P＞0.05）.患者组或对照组不同性别rs1800497等位基因分布和基因型分布差异均无统计学意义（P＞0.05）.男性患者组与对照组相比或女性患者组与对照组相比,rs1800497等位基因分布和基因型分布差异均无统计学意义（P＞0.05）.结论 中国汉族人群DRD2 rs1800497位点可能不是精神分裂症的易感位点.     

中国南方汉族人群CYBA基因C242T多态性与精神分裂症的关联

目的 探讨中国南方汉族人群NADPH氧化酶p22phox亚基基因(CYBA)C242T多态性和精神分裂症的易感性及疾病严重程度的关联.方法 本研究利用SNaPshot技术对906例中国南方汉族人群精神分裂症患者和982名健康对照者进行CYBA基因C242T多态性检测,采用阳性与阴性症状量表(PANSS)对患者组进行精神症状严重程度评定.结果 (1)CYBA基因C242T多态性位点基因型频率和等位基因频率在精神分裂症患者和健康人群中的分布差异无统计学意义(P>0.05);(2)C242T多态性位点CT+TT基因型患者PANSS量表的阴性量表分及总分高于CC基因型患者(P<0.05).结论 CYBA基因C242T多态性与中国南方汉族精神分裂症的易感性无明显关联,C242T多态性位点T突变可能会加重精神分裂症患者的阴性症状.     

Nitric oxide synthase (NOS) in schizophrenia

A high proportion of neurons in the cerebellum and in cholinergic brainstem nuclei stain positive for nicotinamide adenine dinucleotide phosphate-diaphorase (NADPHd), which is a nitric oxide synthase (NOS). Recent evidence suggests that schizophrenia may involve increased numbers of NADPHd-stained neurons in different areas of the subcortex. This led us to examine the actual concentration of NOS in postmortem brain specimens of cerebellum, and the relevant regions of brainstem tegmentum, to see if NOS concentrations were also increased in schizophrenia. Postmortem rain tissue was obtained at autopsy from schizophrenics and controls who did not have other brain disease. In patients with schizophrenia, NOS concentration was increased in the cerebellum (0.62±0.31 vs 0.32±0.27 absorption intensity or AI,p<0.05), but not in mesopontine tegmentum or temporal pole. Increased vermal NOS concentration in schizophrenia may signify a developmentally based alteration in subcortical neuronal systems whose early development may be promoted by basic fibroblast growth factor, rather than nerve growth factor.     

Allelic association of the neuronal nitric oxide synthase (NOS1) gene with schizophrenia

Nitric oxide (NO) has been identified as a widespread and multifunctional biological messenger molecule in the central nervous system (CNS), with possible roles in neurotransmission, neurosecretion, synaptic plasticity, and tissue injury in many neurological disorders, including schizophrenia. Neuronal NO is widely produced in the brain from L-arginine catalyzed by neuronal NO synthase (NOS1). We therefore hypothesized that the NOS1 gene may play a role in the pathophysiology of schizophrenia. In the present study, we examined the genetic association between a novel single nucleotide polymorphism (SNP: a C-->T transition located 276 base pairs downstream from the translation termination site) of the human NOS1 gene, which is located in chromosome 12q24, and schizophrenia (215 Japanese patients with schizophrenia and 182 healthy controls). The allele frequencies of the polymorphism in exon 29 of the NOS1 gene differed significantly between patients with schizophrenia and controls (chi(2) = 20.10, df = 1, P = 0.000007; relative risk = 1.92; 95% confidence interval = 1.44-2.55). Our results suggest that the NOS1 gene polymorphism may confer increased susceptibility to schizophrenia.     

Association study of RELN polymorphisms with schizophrenia in Han Chinese population

Schizophrenia (SZ) is a common and complex psychiatric disorder with a strong genetic component. Previous research suggests that mutations altering genes in neurodevelopmental pathways contribute to SZ. Reelin gene (RELN) maps to chromosome 7q22.1, the encoded protein plays a pivotal role in guiding neuronal migration, lamination and connection during embryonic brain development. Several reports had indicated that reduced RELN expression is associated with human mental illnesses such as SZ, mood disorders and autism. In this study, case-control association analyses were performed in the Han Chinese population to determine if the RELN gene is a susceptibility gene for SZ. Thirty-seven single nucleotide polymorphisms (SNPs) were genotyped in 528 paranoid SZ patients and 528 control subjects. A significant association was found between rs12705169 and SZ (p = 0.001). Moreover, the haplotypes constructed from five SNPs showed significant differences between cases and controls (p = 0.041). When subjects were divided by gender, rs12705169 remained significant difference only in females (OR = 0.24, 95%CI = 0.14-0.40 for CC and OR = 0.40, 95%CI = 0.27-0.58 for AC), both in the allele and genotype (p = 0.0001 for both). This study describes a positive association between RELN and SZ in the Han Chinese population, and provides genetic evidence to support the gender difference of SZ.     

神经元型一氧化氮合酶基因多态性与脑梗死的相关性

目的探讨神经元型一氧化氮合酶(NOS1)基因多态性与脑梗死发病的关系。方法以rs9658281和rs2682820位点为遗传标记,采用聚合酶链式反应(PCR)和限制性片断长度多态性(RFLP)技术检测605例脑梗死患者和313例对照组人群的基因型。结果Rs9658281位点G等位基因频率较对照组明显增高(χ2=3.906,P=0.048,OR=1.362,95%CI1.003～1.850),这种差异在女性明显(χ2=6.689,P=0.010,OR=1.913,95%CI1.170～3.167)。Rs9658281位点的GG基因型频率较对照组明显增高(χ2=5.322,P=0.021,OR=1.473,95%CI1.060～2.047),这种差异在女性明显(χ2=9.299,P=0.002,OR=2.315,95%CI1.349～3.972)。经过多因素回归分析调整了传统危险因素的影响后,两组间仍有显著性差异(P=0.023)。Rs2682820位点的基因型频率和等位基因频率在脑梗死组和对照组的分布无显著差异(P>0.05)。结论神经元型一氧化氮合酶(NOS1)基因rs9658281位点多态性与脑梗死的发病可...     

Association of schizophrenia with the rs821633 polymorphism in the DISC1 gene among Han Chinese

Background

Previous studies report that various single nucleotide polymorphisms (SNP) in the Disrupted-in Schizophrenia 1 (DISC1) gene are closely associated with schizophrenia, but there are no studies that assess the relationship of age of onset of schizophrenia with these SNPs.

Objective

Investigate the relationship between the rs821633 SNP in the DISC1 gene and the occurrence and age of onset of schizophrenia in Han Chinese.

Methods

We used the TaqMan genotyping technology to examine the rs821633 SNP in the DISC1 gene among 315 individuals who developed schizophrenia prior to 19 years of age (‘early-onset’), 407 individuals who developed schizophrenia when 19 years of age or older (‘late-onset’), and 482 healthy controls. We used survival analyses to investigate the relationship between the rs821633(C) risk allele and the age of onset of schizophrenia.

Results

Compared to the prevalence in healthy controls, the prevalence of the C/C genotype of rs821633 and of the C allele in rs821633 were significantly greater in individuals with early-onset schizophrenia (X²=7.17, df=1, p=0.007; X²=7.20, df=2, p=0.032) and significantly greater in individuals with late-onset schizophrenia (X²=5.36, df=1, p=0.022; X²=6.58, df=2, p=0.041). However, there were no significant differences in the prevalence of the C/C genotype or the C allele between individuals with early-onset and late-onset schizophrenia. Kaplan-Meier survival analyses found no significant association between the rs821633(C) risk allele and age of onset in schizophrenia.

Conclusion

We confirm the association of polymorphism in the rs821633 SNP in the DISC1 gene with schizophrenia among Han Chinese, but we found no association between the rs821633(C) risk allele and the age of onset in individuals with schizophrenia.     

eNOS基因多态性与汉族人糖尿病合并颈动脉粥样硬化关系

目的 探讨内皮型一氧化氮合酶(nitric oxide synthase,eNOS)基因第4内因子基因27 bp数目可变的串联重复序列(variable number of tandem repeats,VNTR)多态性与糖尿病合并颈动脉粥样硬化的关系.方法 纳入189例糖尿病合并颈动脉粥样硬者和240名对照,分析各组间的等位基因频率与基因型频率的差异.结果 糖尿病合并颈动脉粥样硬化患者的a等位基因频率高于对照组(9.78%、6.04%,X2=4.119,P<0.05),差别有统计学意义;4a/4b+4a/4a基因型频率在糖尿病合并颈动脉粥样硬化组高于对照组(17.38%、11.65%,X2=5.518,P<0.05),差异有统计学意义.用Logistic回归分析发现4a等位基因与糖尿病合并颈动脉粥样硬化具有显著相关性(OR=1.594,95%CI 1.256-1.741,P<0.000).用多元Logistic回归分析校正了年龄、高血压、高血脂、体重指数和吸烟等危险因素的影响后,a等位基因是糖尿病合并颈动脉粥样硬化的遗传危险因素(OR=0.717.P<0.001).证实eNOS基因VNTR多态性是影响汉族人群中糖尿病患者发生颈动脉粥样硬化的独立危险因素.结论 在汉族人群中糖尿病合并颈动脉粥样硬化的发病与内皮型一氧化氮合酶(eNOS)第4内含子a等位基因密切相关.     

Association of E-selectin gene polymorphisms with ischemic stroke in a Chinese Han population

The E-selectin gene, a member of the selectin superfamily of adhesion molecules, plays an important role in the pathogenesis of thrombovascular diseases. The present study was designed to investigate the potential relationship between E-selectin gene polymorphisms and ischemic stroke in a Chinese Han population. Three hundred fourteen ischemic stroke patients and 389 unrelated healthy controls were recruited for the study. Three single-nucleotide polymorphisms (SNPs)-rs1805193(G98T), rs5361(A561C), and rs5355(C1839T)-in the exon region of the E-selectin gene, were genotyped using a Multiplex SNaPshot sequencing assay. The data showed that the genotype and allele frequencies of G98T and C1839T SNP were similar in both ischemic stroke patients and the controls. In contrast, the frequency of both the AC genotype and the C allele of A561C was significantly higher in ischemic stroke patients than in healthy controls (P = 0.001, P < 0.001, respectively). After adjusting for other risk factors (such as hypertension, diabetes, tobacco smoking, and alcohol consumption), the E-selectin gene AC genotype and C allele of A561C were still associated with a risk of ischemic stroke (odds ratio [OR] = 2.73, 95% confidence interval (CI): 1.29-5.76, P = 0.008; OR = 2.80, 95% CI: 1.58-4.94, P < 0.001, respectively). Our current study demonstrates that the E-selectin SNP A561C is associated with increased risk for the development of ischemic stroke in this subset of the Han Chinese population.