肿瘤坏死因子-α-308基因多态性与广东汉族人颅内动脉瘤的相关性研究

目的探讨广东汉族人群肿瘤坏死因子(TNF)-α-308基因多态性与颅内动脉瘤(IA)的相关性。方法采用聚合酶链-限制性片段长度多态性(PCR-RFLP)方法检测115例IA患者与100名健康对照者TNF-α-308基因多态性,并对两组人群中该基因的基因型频率进行比较。结果在IA患者中,G/G基因型有87例(75.7%),G/A基因型有28例(24.3%);在对照组中,G/G基因型有88名(88.0%),G/A基因型有12例(12.0%)。TNF-α-308基因型频率在病例组与正常对照组差异有统计学意义(P<0.05)。关联分析显示A等位基因携带者患IA的风险较正常对照者升高2.36倍(OR=2.36,95%CI=1.13～4.94)。结论TNF-α-308基因多态性与中国广东汉族人群IA的发生具有相关性,该基因可能是广东汉族人IA的易感基因之一。     

2型糖尿病患者基质金属蛋白酶-12基因多态性与缺血性卒中的相关性研究

目的探讨2型糖尿病患者基质金属蛋白酶12(MMP-12)基因多态性与缺血性卒中的相关性。方法选择2013年1月至2015年12月在本科治疗的217例2型糖尿病合并缺血性卒中患者作为病例组,按照TOAST分型结果将病例组患者分为大动脉粥样硬化性卒中(LAA)组88例和非大动脉粥样硬化性卒中(n-LAA)组129例,选择同期在我院体检的无缺血性卒中的2型糖尿病患者100例作为对照组,采用聚合酶链反应-限制性内切酶分析(PCR-RFLP)法比较MMP-12(-82 A/G)和MMP-12(-1082 A/G)基因型多态性在各组间的差异。结果病例组和n-LAA组MMP-12(82 A/G)基因型和等位基因与对照组比较,差异均无统计学意义(P0.05)。LAA组(G/G+A/G)基因型频率显著高于对照组(22.73%vs 11.00%,P=0.031);G等位基因频率也高于对照组(18.18%vs 10.05%,P=0.033)。n-LAA组MMP-12(-1082 A/G)基因型和等位基因与对照组比较,差异均无统计学意义(P0.05)。病例组和LAA组(G/G+A/G)基因型频率均显著高于对照组(33.64%vs 22.00%,P=0.036;37.50%vs 22.00%,P=0.020);两组G等位基因频率也均高于对照组(25.58%vs 17.00%,P=0.017;30.68%vs 17.00%,P=0.002)。多因素Logistic回归分析结果显示MMP-12-82A/G等位基因G和MMP-12-1082A/G等位基因G均是2型糖尿病患者发生LAA的危险因素(OR=1.107,95%CI 1.010-1.371,P=0.031;OR=1.285,95%CI 1.142-1.817,P=0.010)。结论对于2型糖尿病患者,MMP-12基因-82位点G等位基因和-1082位点G基因多态性与大动脉粥样硬化性卒中密切相关。     

肿瘤坏死因子α启动子基因多态性与胸腺瘤的相关性

目的研究肿瘤坏死因子(TNF)-α启动子基因多态性与胸腺瘤发病的相关性。方法采用聚合酶链反应加基因测序技术对126例胸腺瘤患者与245名健康对照者TNF-α启动子区进行基因分型,比较TNF-α-863、-308、-238、-806以及-857 5个位点等位基因出现频率的差异。结果胸腺瘤患者TNF-α基因-857位点T等位基因和CT+TT基因型显著高于健康对照组(分别为χ2=6.449,P=0.011;χ2=4.874,P=0.027),而TNF-α-863、-308、-238、-806等位点的等位基因频率与健康对照组比较差异无统计学意义。结论 TNF-α基因-857位点T等位基因与胸腺瘤相关,且其可能为胸腺瘤患者一个新的易感基因标记。     

白介素-18基因启动子多态性与阿尔茨海默病的关联分析

目的 探讨IL-18基因启动子区位点单核苷酸多态性与散发性阿尔茨海默病(SAD)的相关关系.方法 采用病例对照的研究方法,共入选SAD患者109例和同期年龄、性别完全匹配的对照组109例.应用序列特异性引物-聚合酶链反应技术检测两组对象IL-18基囚启动子-607C/A位点单核苷酸多态性.结果 IL-18基囚启动子-607C/A位点等位基因和基因型分布在SAD组和对照组间比较差异有统计学意义(P=0.021,P=0.041).SAD组-607CC基因型分布频率明显高于对照组,比较差异有统计学意义(x2=4.109,P=0.043),携带-607CC基因型的人群患SAD的风险是非携带人群的1.90倍(OR=1.90,95%CI:1.017～3.550).结论 SAD与IL-18基因启动子-607C/A位点单核苷酸多态性相关,其中-607CC基因型的人群发生SAD的风险较其他基因型人群的风险高.     

肿瘤坏死因子基因与精神分裂症的传递不平衡研究

目的 探讨肿瘤坏死因子-α(TNF-α)基因和肿瘤坏死因子-β(TNF-β)基因与精神分裂症的关系.方法 收集172个广东潮汕地区的精神分裂症核心家系,将172例精神分裂症患者分为偏执型(96例)和非偏执型(76例),用聚合酶链反应-限制性片段长度多态性方法 ,检测所有研究对象的TNF-α的3个多态性位点(-C863A、-G308A、-G238A)和TNF-β+A252G位点的等位基因频率和基因型频率,并进行传递不平衡检验(TDT).结果 (1)单位点TDT检验,TNF-β+A252G位点杂合子父母过多地传递等位基因G给患者(X2=5.49,Pc＜0.05),而TNF-α的3个多态性位点(-C863A、-G308A、-G238A)均未发现传递不平衡.(2)多位点联合进行单体型分析,未显示在精神分裂症核心家系中存在传递不平衡;但在96个偏执型精神分裂症核心家系中,有一种常见单体型[(-863C,-308G,-238G,+252G);X2=7.20,Pc＜0.05]存在偏向传递.结论 在广东潮汕人群中,TNF-α和TNF-β基因与精神分裂症可能存在某些关联,该基因可能是偏执型精神分裂症的易感基因.     

微卫星位点D7S2421 SNP rs6465976 G/A多态现象与散发颅内破裂动脉瘤的相关性研究

目的探讨微卫星位点D7S2421单核苷酸多态性(SNP)rs6465976 G/A多态现象在散发颅内破裂动脉瘤中的作用。方法应用聚合酶链反应-限制性酶切片段长度多态性(PCR-RFLP)方法,从100例颅内动脉瘤病人和116例对照组病人的外周血中提取微卫星位点D7S2421 SNP rs6465976 G/A的基因型,并应用SPSS13.0统计学软件进行统计学分析。结果微卫星位点D7S2421 SNP rs6465976G/A基因型与颅内动脉瘤无相关性(P=0.938,OR=0.979,95%CI0.567～1.689);在血压≥140/90mmHg的病人中,微卫星位点D7S2421 SNP rs6465976 GA+AA的基因型频率显著性高于GG的频率(P=0.026,OR=2.513,95%CI1.105～5.712);在Hunt-Hess分级>Ⅲ级者中,微卫星位点D7S2421 SNP rs6465976 GA+AA的基因型频率亦显著性高于GG的频率(P=0.008,OR=4.333,95%CI1.401～13.401)。结论微卫星位点D7S2421 SNP rs6465976 G/A的等位基因A可能在...     

Pin基因启动子-842G/C位点多态性与散发性阿尔茨海默病的关联分析

目的:探讨Pin1基因-842G/C位点多态性与散发性阿尔茨海默病(SAD)遗传易感性的关系。方法:应用聚合酶链反应限制性片段长度多态性(PCR-RELP)方法检测46例SAD患者和52名健康老年人的Pin1基因启动子多态性分布特征,并通过比值比(OR)分析基因与SAD之间的关系。结果:Pin1基因启动子多态性(842G/C)与SAD的发病风险不相关,C等位基因与G等位基因的OR=0.90(95%CI=0.37～2.19),而GG基因型与非GG型基因频率在SAD组与健康对照组比较差异无统计学意义(P>0.05)。结论:Pin1基因启动子-842G/C位点多态性可能并不是SAD发病的独立遗传危险因素,与SAD的发病无关。     

肿瘤坏死因子-α血清水平及其多态性与多发性硬化的相关性

目的 研究中国南方汉族人群中血清肿瘤坏死因子-α(TNF-α)水平及其G-308A位点基因多态性与多发性硬化之间的相关性.方法 采用双抗体夹心ABC-ELISA法测定68名无亲缘关系的急性发作期MS病人和55例非免疫系统疾病病人的血清(对照)TNF-α水平,同时应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)技术检测上述68例MS病人和106名无亲缘关系的广东籍健康汉族人的TNF-α基因型.结果 发作期MS患者血清中TNF-α水平与正常对照组有显著差异(P＜0.05),分别是(225±71)pg/ml和(185±73)pg/ml;TNF-α各等位基因型频率在MS组和正常人组比较无统计学意义(P＞0.05),病例组TNF-α基因A纯合基因型和A等位基因频率分别为4.4%和13.9%,正常对照组分别为0%和8.5%.结论 (1)血清中TNF-α水平与发作期MS患者相关.(2)中国南方汉族人群存在TNF-α基因G-308A位点突变.(3)从目前调查的例数中,中国南方汉族人群TNF-α基因G-308A多态性与广东人群中MS无关.     

PLAU基因近端启动子区变异与阿尔茨海默病的关系

目的研究尿激酶型纤溶酶原激活剂(urokinase-type plasminogen activator gene,PLAU)基因近端启动子区变异与散发性阿尔茨海默病发病的相关性。方法根据NINCDS-ADRDA年标准收集98例AD患者,以101例正常人作为对照。采用聚合酶链反应-限制性片段长度多态性(polymerase chain reaction-restriction fragment length polymorphism,PCR-RFLP)结合直接测序的方法,筛查PLAU基因启动子区多态性位点,并对所有受试者进行PLAU启动子区多态位点分型,采用病例-对照相关性研究方法 ,研究其与AD发病的关系。用SPSS11.5统计软件包进行等位基因和基因型分布的比较及它们与疾病的关联分析。结果中国人群中的PLAU近端启动子区存在两个多态性位点-25C/T(rs2227579)和43G/T(rs2227580)。-25C/C基因型增加了AD发病风险(校正后OR=1.671,95%CI:1.098～2.577,P=0.018),43G/G基因型增加了AD发病风险(校正后OR=1.773,95%CI:1.156～2...     

瘦素基因-2548G/A多态性与抗精神病药物所致体重增加的关联分析

目的探讨瘦素基因-2548G/A多态性与抗精神病药物所致体重增加的相关性。方法研究组为85例服用抗精神病药物1年体重增加≥7%的精神分裂症患者,对照组为85例与研究组服用相同的抗精神病药物1年但体重增加<7%的患者。采用高温连接酶检测反应法测定瘦素基因-2548G/A多态性。结果2组患者瘦素基因-2548位点基因型及等位基因频率的差异均有统计学意义(P<0.05)。研究组AA型明显增高,GG型明显降低,等位基因A频率高于对照组。A/A型患者体重增加的危险性较A/G和G/G基因型者高1.71倍(OR=1.71),而前者治疗后体质量指数增加量明显高于后二者,差异有统计学意义(t=2.88,P=0.004)。结论瘦素基因-2548A/G多态性可能与抗精神病药物引起的体重增加存在关联。     

肿瘤坏死因子-α C863A、T1031C基因多态与缺血性脑卒中的相关性研究

目的 探讨肿瘤坏死因子-α(TNF-α)C863A、T1031C基因多态与缺血性脑卒中(IS)的关系.方法 共收集150例IS患者和110例对照者,应用聚合酶链反应一限制性片段长度多态性(PCR-RFLP)方法检测TNF-α基因C863A、T1031C多态性.x2检验分析比较基因型和等位基因频率的差异,多元Logistic回归分析方法分析各种危险因素对IS的影响.结果 IS组和对照组在-863位点CA+AA基因型频率分别为0.387和0.255,比较差异有统计学意义(χ2=5.004,P=0.025),IS组A等位基因频率亦高于对照组,比较差异有统计学意义(χ2=5.176,P=0.023).按性别分组后,发现男性IS组CA+AA基因型频率和A等位基因频率均明显高于对照组,比较差异有统计学意义(χ2=7.968,p=0.005;χ2=7.557,P=0.006).-1031位点多态TC+CC基因型和C等位基因在IS组和对照组差异无统计学意义(χ2=1.463,P=0.226;χ2=2.849,P=0.091).多元Logistic回归分析显示TNF-α C863A多态是IS的独立危险因素(P=0.022,OR=1.846,95%CI:1.075～3.169).结论 TNF-α C863A多态与老年IS有相关性,可能是IS危险因素之一,T1031C基因多态与IS无相关.     

中国汉族人群PARK16基因多态性与帕金森病易患性的关联

目的 探讨PARK16基因单核苷酸多态性(SNP)与帕金森病(PD)易患性的关系,分析其SNP的基因型和等位基因频率及不同基因型的优势比(OR)和其临床特征.方法 采用病例-对照研究选择PD患者226例和362名健康对照,利用TaqMan荧光定量PCR方法检测中国汉族人群中PARKl6基因Rs947211和Rs823128基因多态性,并对不同基因型临床资料进行分析.结果 PARKl6基因的多态性位点Rs947211在PD组基因型频率为∶GG 34.1%(77/226)、AG 46.0%(104/226)、AA 19.9%(45/226),对照组分别为23.8%(86/362)、53.0%(192/362)、23.2%(84/362),2组基因型频率差异具有统计学意义(以野生型GG为参考,AG∶OR=0.57,95%CI 0.38～0.85,P=0.006;AA∶OR=0.55.95%CI,0.34～0.85,P=0.015).以PD组野生型GG为参照,暴露于A等位基因型(AA+AG)的OR=0.56,95%CI0.38～0.82,P=0.003.晚发型PD(LOPD)Rs947211的基因型频率与对照组比较差异亦有统计学意义(AG∶OR=0.46,95%C/0.27～0.78,P=0.004∶AA∶OR=0.35,95%C/0.18～0.68,P=0.002).PD组3种基因型在临床表现上差异没有统计学意义.Rs823128在PD组基因型频率分布与对照组差异无统计学意义(以野生型AA为参照,AG∶OR=1.12,95%CI0.75～1.68,P=0.568;GG∶OR=0.99,95%CI0.35～2.76,P=0.994).结论 中国汉族人群中PARK16基因与PD易患性相关.

Abstract：

Objective To investigate the association between PARK16 gene polymorphism and Parkinson's disease(PD)susceptibility in Chinese Han population.and to analyze its single-nucleotide polymorphism(SNP)genotypes,frequencies and odds ratios(OR)of different genotypes.Methods The association between two SNP loci in PARK16 gene(Rs947211,Rs823128)and PD susceptibility was investigated by TaqMan quantitative polymerase chain reaction(PCR)in 226 PD patients and 362 healthy controls.Allele and genotype frequencies were calculated by the Chi-square test,and the clinical data were also analyzed.Results Three genotypes of Rs947211(GG,AG and AA)account for 34.1%(77/226),46.0%(104/226),19.9%(45/226)in the PD group,and 23.8%(86/362),53.0%(192/362),23.2%(84/362)in the control group,respectively.There was significant difference between two groups (P<0.05).Setting the GG genotype as the reference,OR values of AG and AA genotype were 0.57(95%CI0.38-0.85,P=0.006)and 0.55(95%CI 0.34-0.85,P=0.015),while the OR value for exposure to the A allele(AA+AG)was 0.56(95%CI0.38-0.82,P=0.003).Genotypes of Iate-onset PD were also significantly different from the controls(OR valne of AG=0.46,95%CI 0.27-0.78,P=0.004:OR value of AA=0.35.95%CI 0.18-0.68,P=0.002).And there was no diffefence in clinical features among the 3 genotypes. The frequency of Rs823128, another locus, in PD group was not significantly different from the control group( AA genotype as the reference, OR value of AG was 1. 12, 95% CI 0. 75-1.68, P = 0.568; OR value of GG was 0.99, 95% CI 0.35-2.76, P = 0.994). Conclusion Polymorphism of PARK 16 locus Rs947211 is associated with PD patients in Chinese Han population.     

Suicide attempt in mental disorders (MeDi): Association with 5-HTT,IL-10 and TNF-alpha polymorphisms

BackgroundMental disorders (MeDi) and suicide attempts (SA) are influenced by environmental and genetic factors. Genetic polymorphism studies have identified some candidate genes for suicidal behaviour in people with MeDi.ObjectiveTo evaluate MeDi and SA in relation to the presence of rs2020933 (5-HTT), rs1800871 (IL-10) and rs1800629 (TNF-α) polymorphisms.MethodsA questionnaire for identification and general data, a brief quality of life assessment (WHOQOL-brief), the scale of suicide ideation by Beck and the MINI International Neuropsychiatric Interview were used in this study. DNA was obtained using buccal mucosa swab samples, and genotyping was performed using real-time polymerase chain reaction. A total of 306 patients were assessed with MeDi; 161 patients had MeDi and a history of SA, and 145 patients had MeDi and no history of SA. The study had 175 subjects in the control group.ResultsThe TNF-α rs1800629 -308A/G genotype was significantly associated with function as a protection factor in the control group compared with MeDi without SA. The TNF-α rs1800629 -308G allele appeared as risk factor for MeDi compared to the control group, for female gender. Additionally, the −308A/G + A/A genotype appeared as protection factor for the control group compared to the group with MeDi. For TNF-α, the −308G allele appeared as risk factor for the number of SA (1 time) compared to the control group.ConclusionThe IL-10 (rs1800871) and 5-HTT (rs2020933) SNPs were considered to have inadequate statistical power. The rs1800629 (TNF-α) polymorphism may be associated with MeDi without SA, MeDi in females and the number of SA (1 time) in the studied group.     

散发性重症肌无力患者267例维生素D受体基因多态性

目的 探讨中国汉族人维生素D受体(VDR)基因Fok Ⅰ和Apa Ⅰ位点多态性与重症肌无力(MG)的关系.方法 采用聚合酶链反应-限制性内切酶片段多态性(PCR-RFLP)法检测VDR基因Fok Ⅰ和Apa Ⅰ位点的多态性,比较基因型和等位基因在健康对照组及各MG亚组中的分布,并观察其与MG严重程度和激素短期疗效的关系.结果 Fok Ⅰ和Apa Ⅰ位点的基因型和等位基因频率在MG组和对照组间以及MG各亚组间的分布差异无统计学意义.Fok Ⅰ位点的基因型和等位基因频率在激素短期疗效好和疗效差组间的分布差异亦无统计学意义;但Apa Ⅰ位点的A等位基因频率在两组间差异有统计学意义,疗效好者(55/186,29.6%)高于疗效差者(7/48,14.6%,OR=2.46,95%CI 1.04～10 43,x2=4.400,P=0.036);激素短期疗效好者中携带基因型AA及Aa的频率(48/93,51.6%)高于疗效差者(7/24,29.2%,OR=2.59,95% CI 0.98～14.60,x2=3.858,P=0.049).结论 在我国汉族人散发性MG患者的VDR基因中,未发现Fok Ⅰ和Apa Ⅰ变异位点显著增加MG的患病风险,但携带Apa Ⅰ位点的A等位基因的MG患者激素短期疗效可能较好.

Abstract：

Objective To explore the associations between vitamin D receptor ( VDR) Fok- Ⅰ and Apa- Ⅰ polymorphisms and myasthenia gravis (MG) in Chinese Han population.Methods Polymorphisms of VDR Fok- Ⅰ and Apa-Ⅰ were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method.The frequencies of genotypes and hyplotypes were compared among 286 normal controls and 267 MG patients in different subgroups classified by gender,age of onset,presence of thymoma,and Osserman classification sat maximal severity in the follow-up.The association between the genotypes and maximal severity of MG and short-term glucocorticoid treatment were also investigated.Results There were no significant differences in frequencies of genotypes and hyplotypes of both Fok-Ⅰ and Apa-Ⅰ between MG group and control group,and among subgroups of MG.The Fok- Ⅰ showed no statistical difference between the patients with better and less improvement after short-term treatment of glucocorticoid.The frequency of Apa-Ⅰ alleles in the patients with better improvement (55/186,29.6% ) significantly differed from the less improved group ( 7/48,14.6%,OR = 2.46,95% CI 1.04-10.43,x2 = 4.400,P = 0.036).The patients with the genotype A A/Aa were more likely to improve better after the treatment(48/93,51.6%) than in the worse group(7/24,29.2%,OR =2.59,95% CI 0.98-14.60,x2 =3.858,P= 0.049).Conclusions Alleles and genotypes of VDR-Fok- Ⅰ and Apa-Ⅰ were not found to be related with MG onset and severity.MG patients with VDR-Apa-A allele may have better improvement short-term treatment of glucocorticoid.     

Migraine and tumour necrosis factor gene polymorphism

To assess the possibility of an association between TNF gene polymorphisms and migraine without aura, a case-control study was performed in a Sardinian sample. Migraine without aura is a complex genetic disease in which susceptibility and environmental factors contribute towards its development. Several studies suggest that tumour necrosis factors (TNF) (TNF-α and lymphotoxin-alpha or TNF-ß) may be involved in the pathophysiology of migraine. The TNF-α and TNF-ß genes are located on chromosome 6p21.3 in the human leukocyte antigene (HLA) class III region. We evaluated 299 patients affected by migraine without aura (I.H.S. criteria 2004) and 278 migraine-free controls. The polymorphisms G308A of the TNF- α gene, and G252A of TNF-β gene were determined by NcoI restriction fragment length polymorphism analysis. We found a statistically significant difference in allele (p = 0.018; OR = 1.46 95 % CI: 1.066 to 2.023) and genotype (trend χ2 = 5.46, df = 1, p = 0.019) frequencies of TNF-β gene, between cases and controls. Allele and genotype frequencies of TNF-α polymorphism did not differ significantly between the two groups. These data suggest that subjects with the TNFB2 allele have a low risk of developing migraine without aura and/or that the polymorphism of the TNF-β gene is in linkage disequilibrium with other migraine responsible genes in the HLA region.     

NINJ2基因多态性及相关血清因子与卒中的相关性研究

目的 研究中国汉族人群中NINJ2基因多态性与卒中的相关性以及肿瘤坏死因子-α(TNF-α)、神经生长因子(NGF)、白细胞介素-6(IL-6)、P-选择素(P-Selectin)在恢复期患者和正常人群中含量的差别. 方法 选择大动脉粥样硬化性(LAA)脑梗死患者52例、小动脉闭塞性(SAO)脑梗死患者85例、脑出血(ICH)患者50例及正常对照者66例,采用聚合酶链式反应-限制性片段长度多态性(PCR-RFLP)技术检测NINJ2基因两个SNP位点(rs12425791、rs11833579)的基因型,比较各组间的基因型及等位基因分布频率是否存在差异.采用多类结果变量的logistic回归分析法计算各患者组基因型的OR值,并给出95%CI.采用ELISA法检测TNF-α、NGF、IL-6及P-Selectin4种血清因子的含量,并比较组间及组内不同基因型间血清因子含量的差别. 结果 (1)对于rs12425791位点,LAA组及SAO组AG型频率及AA+AG型频率明显高于对照组,比较差异有统计学意义(P＜0.05),但ICH组与对照组比较差异无统计学意义(P＞0.05);SAO组A等位基因频率明显高于对照组,比较差异有统计学意义(P＜0.05),但LAA组及ICH组与对照组比较差异无统计学意义(P＞0.05).对于rs11833579位点,各患者组的基因型及等位基因分布频率与对照组相比差异无统计学意义(P＞0.05).(2)多类结果变量的logistic回归分析显示,在校正了其他危险因素的影响后,对于rsl2425791位点,LAA组AG型和SAO组AG型、AA+AG型仍与卒中发病呈相关关系(其OR值分别为4.298、3.923及2.937,相应的95%C1分别为1.430～12.922、1.417～10.860及1.119～7.710);而对于rs11833579位点,各患者组基因型与卒中发病无相关关系.(3)各患者组血清IL-6、TNF-α、NGF及P-Selectin含量与对照组相比差异无统计学意义(P＞0.05).对于rs12425791位点,LAA组不同基因型间TNF-α含量差异有统计学意义(P＜0.05),ICH组不同基因型间P-Selectin含量差异有统计学意义(P＜0.05);对于rs11833579位点,LAA组不同基因型间NGF含量差异有统计学意义(P＜0.05). 结论 中国汉族人群中NINJ2基因SNP位点rs12425791与卒中发病显著相关,其A等位基因增加罹患该病的风险,SNP位点rs11833579与卒中发病没有显著关系.恢复期患者4种血清因子的含量与正常对照者相比没有明显差别.

Abstract：

Objective To investigate the relationship between NINJ2 gene polymorphism and stroke, and the differences of serum levels of tumor necrosis factor-αt (TNF-α), NGF, interleukin-6 (IL-6)and P-Selectin in healthy controls and patients under recovery stage. Methods Fifty-two patients with large-artery atherosclerosis (LAA) infarction, 85 patients with small-artery occlusion lacunar (SAO)infarction, 50 patients with intracerebral hemorrhage (ICH) and 66 healthy controls were included in this study. Genotypes of the 2 single nucleotide polymorphism (SNP) sites (rs12425791 and rs11833579) in NINJ2 gene were examined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RLFP) method. The differences of genotypes and alleles frequencies of the 2 SNP sites between each 2 different groups were analyzed and compared. Multinomial logistic regression was used to calculate the odds ratio (OR) of genotypes in each patient group, and 95% confidential interval (95% CI)was given. The serum levels ofTNF-α, NGF, IL-6 and P-Selectin were tested by ELISA method, and compared between groups and within group classified by genotypes. Results In regard to rs12425791 site, the frequencies of AG and AA+AG genotypes in LAA and SAO groups were significantly higher than those in control group (P＜0.05), while this difference was not found between the ICH group and control group (P＞0.05); the frequency of A allele in the SAO group was significantly higher than that in the control group (P＜0.05), while this difference was not found between the control group and both the LAA and ICH groups (P＞0.05). In regard to rs11833579 site, no significant differences in the genotypes and alleles were noted between all the patient groups and control group (P＞0.05). After adjusting the influence of other risk factors, the multinomial logistic regression analysis showed that the onset of stroke was still significantly associated with the AG genotype at rs12425791 site in the LAA group (OR=4.298,95%CI=1.430-12.922) and AG, AG+AA genotypes at rs12425791 site in the SAO group (OR=3.923 and 2.937, 95%CI= 1.417- 10.860 and 1.119-7.710). Neither genotypes in rs 11833579 site were significantly associated with the onset of stroke. No significant differences of serum levels of TNF-α, NGF, IL-6 and P-Selectin were noted between each patient group under recovery stage and control group (P＞0.05); in regard to rs12425791 site, the serum level of TNF in LAA group with different genotypes was significantly different (P＜0.05) and the serum level of P-Selectin in ICH group with different genotypes was significantly different (P＜0.05); in regard to rs11833579 site, the serum level of NGF in LAA group with different genotypes was statistically different (P＜0.05). Conclusion This SNP site (rs12425791)is significantly associated with ischemia stroke and the A allele increases the risk of being susceptible to this disease in Chinese Han population. That SNP site (rs1 1833579) is not significantly associated with stroke. No significant differences of TNF-α, NGF, IL-6, P-Selectin serum levels are noted between patients under recovery stage and controls.     

CCR2b基因190G/A多态性与脑出血的相关性研究

目的探讨趋化因子受体CCR2b基因190G/A多态性与中国湖南地区汉族人群脑出血(ICH)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)技术检测158例脑出血患者和150名年龄、性别相匹配的正常对照者趋化因子受体CCR2b基因190G/A的基因型分布及等位基因频率,比较不同群体的表型差异及其对脑出血的影响。结果中国湖南汉族人群存在趋化因子受体CCR2b基因190G/A多态性,趋化因子受体CCR2b 190G/A基因型分布为AA 3.6%,GA 22.1%和GG 74.3%,等位基因A和G频率分别0.146和0.854。在对照组中,趋化因子受体CCR2 b 190 G/A基因型分布为AA 5.3%,GA 28.0%和GG 66.7%,等位基因A和G频率分别0.193和0.807。在脑出血组中,趋化因子受体CCR2b 190G/A基因型分布为AA 1.9%,GA 16.5%和GG 81.6%,等位基因A和G频率分别0.102和0.898。脑出血组趋化因子受体CCR2 b基因190 G/A多态位点的A等位基因频率显著低于对照组(P<0.05),这种差异在合并高血压和冠心病患者中尤为明显。应用Logistic回归校正了脑出血的环境危险因素后,CCR2b190A仍可使脑出血发生的危险性降低(OR=0.205,95%CI:0.092～0.454,P=0.000)。结论 CCR2b基因190G/A位点的A等位基因可能是湖南地区汉族人群脑出血的一种保护性基因多态。     

基质金属蛋白酶-3基因多态与颈动脉斑块稳定性的关系

目的 探讨基质金属蛋白酶-3(matrix metalloproteinase-3,MMP-3)血清水平及启动子基因5A/6A多态与颈动脉斑块稳定性的关系.方法 280例急性脑梗死患者根据颈动脉超声结果 分为颈动脉易损斑块组(124例)和颈动脉稳定斑块组(156例).采用ELISA法测定两组患者的血清MMP-3水平,同时采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法分析MMP-3启动子基因5A/6A多态性.结果 易损斑块组发病48 h内的血清MMP-3水平为(23.8±8.3)ng/μl,而稳定斑块组为(20.0±10.0)ng/μl(t=3.39,P=0.00).易损斑块组5A/6A+5A/5A基因型频率为39.5%,稳定斑块组为25.6%,两者比较差异有统计学意义(χ2=6.13,P:0.01,DR=1.90,95%CI,1.14～3.15),5A等位基因频率在易损斑块组为20.6%,稳定斑块组为12.8%,两者比较差异也有统计学意义(χ2=6.09,P=0.01,DR=1.76,95%CI 1.12～2.77).结论 MMP-3血清水平及启动子基因5A/6A多态性可能与中国汉族人群颈动脉易损斑块发生的倾向性有关,5A等位基因可能是颈动脉易损斑块的遗传易患标志之一.