儿童焦虑症与5-HT2A受体基因多态性的关联分析

目的 探讨儿童焦虚症与５－ＨＴ２Ａ受体基因多态性之间的遗传关联。方法 采用聚合酶链式反应（ＰＣＲ）和限制性片段长度多态性（ＲＦＬＰｓ）方法,对６１个符合ＤＳＭ－Ⅳ与ＣＣＭＤ－２－Ｒ诊断标准的焦虚症儿童及其父母的５－ＨＴ２Ａ受体基因多态性进行分型,分型结果用单体型相对风险方法（ＣＨＲＲ和ＨＨＲＲ）与传递不平衡检验（ＴＤＴ）进行分析。结果 儿童焦虑症与５－ＨＴ２Ａ受体基因无显著性关联。ＣＨＲＲ、ＨＨＲＲ和ＴＤＴ值分别为２．３６０７～０．９２１３,１．０９５５和１．８８,Ｐ值均〉０．０５。结论 儿童焦虑症与５－ＨＴ２Ａ受体基因Ｔ１０２Ｃ多态性无关联。     

5-羟色胺2A受体基因多态性与精神分裂症的相关性研究

目的探讨５－羟色胺２Ａ受体基因多态性与精神分裂症的相关性。方法采用Ａｍｐ－ＲＦＬＰ方法对精神分裂症患者和各对照组的５－羟色胺２Ａ受体（简称５－ＨＴ２ＡＲ）基因的相关性进行了研究。结果精神分裂症患者５－ＨＴ２ＡＲ基因Ａ２Ａ２纯合子基因型频率及等位基因Ａ２频率均高于对照组（χ２＝８．９９，８３８Ｐ均＜０．０１），对发生精神分裂症的５－ＨＴ２ＡＲ基因Ａ２Ａ２纯合子相对危险度是２３６。结论本实验结果提示５－ＨＴ２ＡＲ基因的变异与精神分裂症有密切相关性。     

5-羟色胺2A受体基因多态性与阿尔茨海默病的关联分析

目的 探讨中国汉族人群中５－羟色胺（５－ＨＴ）２Ａ（５－ＨＴ２Ａ）受体基因多态性与阿尔茨海默病（ＡＤ）的相互关系,方法 应用聚合酶链式反应（ＰＣＲ）－限制片段长度多态性（ＲＦＬＰ）方法,在８２例ＡＤ患者和９７名正常人中观察了５－ＨＴ２Ａ受体基因和载脂蛋白Ｅ（ＡｐｏＥ）基因多态性的分布,结果 （１）５－ＨＴ２Ａ受体基因多态性与ＡＤ是不存在任何关联（Ｐ〉０．０５）;（２）在进行ＡｐｏＥ基因分型后,Ａｐ     

5—羟胺6受体基因多态性与抑郁症的关联研究

目的 探讨５－羟色胺６（５－ＨＴ６）受体基因多态性与抑郁症之间的关系。方法 应用聚合酶链反应（ＰＣＲ）和限制性片段长度多态性（ＲＦＬＰ）技术,对８９例抑郁症患者（抑郁症组）和９０名正常对照者（对照组）的５－ＨＴ６受体基因多态性（２６７Ｃ／Ｔ）进行了检测。结果 ５－ＨＴ６受体基因的３种基因型（Ｃ／Ｃ,Ｃ／Ｔ和Ｔ／Ｔ）在抑郁症组中的分布分别为５８％、３７％和５％,在对照组分别为４５％、４８％和７％,两     

精神分裂症与5HT2a受体基因GT102C多态性的关联研究

目的 探讨汉族人５－ＨＴ２ａ受体基因Ｔ１０２Ｃ多态性与精神分裂症病因之间的关系。方法 取２２３例精神分裂症病人作研究，以１６２例正常人作对照，用聚合酶链式反应扩增及内切酶酶切技术测定所研究对象的基因型和等位基因。结果 发现精神分裂症与５－ＨＴ２ａ受体基因的基因型Ａ１／Ａ１关联。结论 ５－ＨＴ２ａ受体基因Ｔ１０２Ｃ多态性与精神分裂症的易感性有关，基因型Ａ１／Ａ１是精神分裂症的风险因子。     

精神分裂症与5—HT2c受体基因的关系

目的探讨上海地区汉族人５－ＨＴ２ｃ受体基因Ｃｙｓ２３Ｓｅｒ多态性的发生率及其与精神分裂症之间的关系。方法随机抽取２７４例精神分裂症患者作研究,以１８７例正常人作对照。用多聚酶链式反应（ＰＣＲ）扩增及单链构橡多态性（ＳＳＣＰ）分析、限制性片段长度多态性（ＲＦＬＰｓ）技术检测所研究对象的５－ＨＴ２ｃ受体基因Ｃｙｓ２３Ｓｅｒ多态性。结果仅在１个正常个体发现Ｃｙｓ－２３－Ｓｅｒ突变,精神分裂症患者中均未见     

阿欠茨海默病的Aβ表达与APOE,PS1基因的相关分析

目的 研究阿尔茨海默病的ＡＰＰ基因中Ａβ表达量与载脂蛋白Ｅ（ＡＰＯＥ）基因和早老素１（ＰＳ１）基因间相互关系。方法 应用竞争ＲＴ－ＰＣＲ技术,测定５２例ＡＤ患者,２８例血管性痴呆（ＶＤ）患者及６０名健康老人的外周单核血细胞中Ａβ相对半定量表达量,以及采用ＰＣＲ－ＲＦＬＰ方法检测所有研究对象的ＡＰＯＥ基因和ＰＳ１基因的多态性分布。疾病诊断按ＤＳＭⅢ－Ｒ标准。结果 ＡＰＯＥε４等位基因和ＰＳ１的各种     

精神分裂症与APO E基因的关联研究

目的为了探讨汉族人ＡＰＯＥ基因与精神分裂症病因之间的关系。方法随机抽取２０７例精神分裂症患者作研究，以１６０例正常人作对照。用聚合酶链式反应（ＰＣＲ）扩增技术及限制性片段长度多态性（ＲＦＬＰｓ）技术测定所研究对象的ＡＰＯＥ基因型和等位基因。结果发现精神分裂症与ＡＰＯＥ基因的基因型及等位基因均无关联。结论ＡＰＯＥ基因在汉族人精神分裂症的病因发病中不起重要作用     

5—HT2a受体基因T102C多态性与利培酮疗效的关联分析

目的：探讨５－ＨＴ２ａ受体基因Ｔ１０２Ｃ多态性与利培酮疗效之间的关系。方法：抽取５６例连续住院的精神分裂症患者作研究,给予利培酮≥２ｍｇ／ｄ治疗两个月,用ＰＡＮＳＳ量表评定利培酮疗效,用聚合酶链式反应扩增及限制性片段长度多态性技术测定研究对象的基因型和等位基因。结果;发现利培酮疗效与５－ＨＴ２ａ受体基因Ｔ１０２Ｃ多态性无关联。     

α1-抗糜蛋白酶基因、早老素1基因 与阿尔茨海默病的相关分析

目的探讨中国汉族人中α１抗糜蛋白酶（ＡＡＣＴ）基因、早老素１（ＰＳ１）基因多态性与阿尔茨海默病（Ａｌｚｈｅｉｍｅｒｓｄｉｓｅａｓｅ,ＡＤ）的相关情况。方法应用ＰＣＲＲＦＬＰ方法,在１２３例患者和１４０例正常人中观察ＡＡＣＴ信号肽和ＰＳ１基因多态性的分布,进行关联分析。结果１ＡＤ患者与ＰＳ１基因等位基因１正关联,与等位基因２和基因型２／２负关联,但与１／１基因型无关;２ＡＡＣＴ信号肽基因多态性与ＡＤ无关联;３在三种ＰＳ１基因型中,ＡＡＣＴ信号肽基因多态性与ＡＤ均无关;４在ＡＡＣＴ基因ＡＡ、ＴＴ基因型中,ＰＳ１基因多态性与ＡＤ负关联,而ＴＡ型中ＰＳ１基因与ＡＤ无显著相关。结论中国人群中,ＡＤ与ＰＳ１基因２／２型负关联,而与ＡＡＣＴ信号肽基因多态性无关;ＡＡＣＴ信号肽和ＰＳ１基因多态性之间也无明显的相互影响。     

5-羟色胺2A受体基因多态性与抑郁症的关联

目的：探讨中国汉族人群难治性抑郁症患者与5-羟色胺2A(5-HT2A)受体基因的T102C多态性之间的关系。方法：抽取79例难治性抑郁症患者作研究，以102名正常人作对照。应用聚合酶链式反应(PCR)扩增技术及限制性片段长度多态性(RFLP)分别测定所有研究对象的5-HT2A受体基因的基因型和等位基因。结果：5-HT2A受体基因的3种基因型(A1／A1，A1／A2和A2／A2)在难治性抑郁症组的分布分别为31．6％、54．4％和13．9％，在对照组分别为29．4％、45．1％和25．5％，两组间差异无显著性。结论：5-HB。受体基因的T102C多态性与难治性抑郁症之间无显著关联。     

Association analysis of the 5-HT5A gene in depression, psychosis and antipsychotic response

The serotonergic system is targeted by both antidepressants and atypical antipsychotic drugs such as clozapine. Genetic variation in the 5-HT5A gene might be involved in susceptibility to depression, the major psychoses or in influencing clinical response to treatment. To examine this hypothesis we genotyped two polymorphisms (-19G/C; 12A/T) in the human 5-HT5A receptor gene in a sample of 269 unrelated schizophrenic patients treated with clozapine, 112 bipolar patients, 75 unipolar patients and 187 controls. After five-fold correction for multiple testing, allelic association was found with the -19G/C polymorphism and bipolar affective disorder, (p = 0.025; OR 0.56), unipolar depression (p = 0.004; OR 0.52) and schizophrenia (p = 0.036; OR 0.67) indicating a potential protective effect of the G19 allele. For the 12A/T polymorphism allelic association was observed with unipolar depression only (p = 0.004). We conclude that allelic variation in the human 5-HT5A receptor gene may be involved in susceptibility to schizophrenia and affective disorders but not in determining response to clozapine.     

单相抑郁症与5-羟色胺2A受体基因多态性的关联研究

探讨中国汉族人群单相抑郁症患者与5－HT2A受体基因T102C多态性之间的关系，方法：采用AmP-RFLP方法，检测单相抑郁症患者对照组的5－HT2A受体基因频率分布。结果：单相抑郁症患者5－HT2A受体基因型频率，等位基因频率与对照组无明显差异。结论：本实验结果提示5－HT2A受体基因多态性与单相抑郁症患者未见明显相关，提示5－HT2A受体基因可能不是单相抑郁症发病的风险基因之一。     

5-HT6受体基因多态性与双相情感障碍的关联研究

目的探讨5-HT6受体基因多态性与双相情感障碍之间的关系。方法应用聚合酶链反应(PCR)和限制性片段长度多态性(RFLP)技术，对93例双相情感障碍病人和102例正常对照者的5-HTs受体基因多态性(267C／T)进行了检测。结果双相情感障碍与5-HT。受体基因的多态性(267C／T)之间无显著意义的关联，发病年龄也与此多态性无关。结论5-HT。受体基因的267C／T多态性可能与双相情感障碍的发生无直接关联。     

Association analysis of the 5-HT6 receptor polymorphism C267T with depression in patients with Alzheimer's disease

A significant increase of 267C allele of the 5-HT(6) receptor gene has been reported in patients with Alzheimer's disease (AD). Because a deficit in serotonergic neurotransmission is involved in major depression, we tried to find out whether 267C allele is associated with depressive disorders in AD. A psychiatrist interviewed all AD patients and their caregivers for evidence of depression using a Chinese version of the Standard Clinical Interview for DSM-III-R. The difference in the 5-HT(6) genotype or allele distributions between the AD patients with depressive disorders (n = 25) and those without (n = 120) was not significant.     

Monoamine oxidase: A gene polymorphism,tryptophan hydroxylase gene polymorphism and antidepressant response to fluvoxamine in Japanese patients with major depressive disorder

Monoamine oxidase A (MAOA) and tryptophan hydroxylase (TPH) are the staple enzymes in the metabolism of serotonin (5-HT). The genetic polymorphisms of these two enzymes might individually alter the production, release, reuptake or degradation of 5-HT during the treatment of selective serotonin reuptake inhibitors (SSRIs), leading to the individual differences in the antidepressant effects of SSRIs. The authors investigated whether a functional polymorphism in the MAOA gene promoter (MAOA-VNTR) and a TPH gene polymorphism in intron 7 (TPH-A218C) were associated with the antidepressant response to fluvoxamine in 66 Japanese patients with major depressive disorder during a 6-week study with a specific dosage plan. Fifty-four patients completed the study. The present study fails to demonstrate that the genetic polymorphisms of MAOA-VNTR and TPH-A218C affect the antidepressant effect of fluvoxamine in Japanese patients with major depressive disorder.     

5-HT1A receptor responsivity in unipolar depression. Evaluation of ipsapirone-induced ACTH and cortisol secretion in patients and controls

The selective 5-HT1A receptor ligand ipsapirone (IPS) induces corticotropin (ACTH) and cortisol secretion in humans. To explore 5-HT1A receptor-mediated hypothalamic-pituitary-adrenal (HPA) system activation in depression, 24 subjects (12 patients with unipolar depression and 12 individually matched controls) were given 0.3 mg/kg IPS or placebo in random order. Compared with controls, the depressed patients exhibited significantly decreased ACTH and cortisol responses to IPS in association with increased basal cortisol secretion. The impaired HPA response following 5-HT1A receptor challenge in unipolar depression could have resulted from glucocorticoid-dependent subsensitivity of the (post-synaptic) 5-HT1A receptor itself and/or from a defective postreceptor signaling pathway [inhibitory guanine nucleotide-binding protein (Gi)-adenylate cyclase complex function], thus supporting the hypothesis that a disintegrated 5-HT and HPA system interaction may be present in depression. Future studies of the HPA response to direct-acting 5-HT1A ligands, such as IPS, should facilitate the assessment of 5-HT/HPA system integrity in various affective disorders and its involvement in psychotropic drug effects.     

No evidence for allelic association of serotonin 2A receptor and transporter gene polymorphisms with depression in Alzheimer disease

Patients with Alzheimer disease (AD) often exhibit psychiatric symptoms associated with cognitive impairment. The serotoninergic system may be involved in the development of depressive symptoms in AD patients, as suggested by the evidence that antidepressant drugs having the serotonin transporter as their target are effectively used to treat depressive AD patients. The aim of this study was to investigate the role of serotonin in depression, searching for association of two serotoninergic polymorphisms (T102C of serotonin receptor 5-HT2A and serotonin transporter linked polymorphic region -5-HTTLPR- of SLC6A4 gene) with depressive symptoms and considering their possible interactions with Apolipoprotein E (ApoE) and between themselves, in a sample of 208 sporadic AD patients and 116 normal controls from Italy. 5-HTTLPR and T102C are not associated with AD when separately analysed. However, we found out an interaction between the two polymorphisms in L/L and C/C genotype carriers increasing the risk for the disease (p=0.015, OR=8.048; 95% CI: 1.497-43.262). No association of the polymorphisms was detected with depression linked to AD. No interaction between 5-HTTLPR and T102C was detected in depressive AD subjects, even after stratification according to the presence of ApoE4 allele. These results suggest that the serotoninergic system may be not involved in the pathogenesis of depressive symptoms in AD patients, and it may be involved in other aspects of disease pathophysiology like cognitive symptoms and psychosis.     

5-羟色胺2A受体T102C基因多态性与卒中后抑郁的关联研究

目的 探讨5-羟色胺(5-HT)2A受体T102C基因多态性与卒中后抑郁(PSD)的关系,研究PSD的遗传发病机制.方法 选择珠江医院神经内科自2010年1月至2010年12月收治的汉族住院患者为研究对象,根据有无并发抑郁症将其分为PSD组(97例)及单纯卒中组(72例).采用PCR和限制性片断长度多态性(RFLP)技术测定2组患者5-HT2A受体T102C等位基因频率及基因型.结果 PSD组中突变型C等位基因频率(43.3％)低于单纯脑卒中组(59.0％),突变纯合子C/C基因型频率(20.6％)也低于单纯卒中组(34.7％),差异均有统计学意义(x2=0.179,P=0.004;x2=7.855,P=0.020).结论 5-HT2A受体T102C基因可能是PSD的易感基因,C等位基因是罹患PSD的保护因子.