中国山东地区汉族人群血小板特异性抗原-15基因多态性分析

目的:分析山东地区汉族人群血小板特异性抗原(HPA)15基因多态性分布特点。方法:采用PCR-序列特异性引物(PCR-SSP)技术对108例无血缘关系汉族人进行HPA-15基因分型,计算等位基因频率、基因型频率并与其他种族、地区人群相关资料比较。结果:等位基因HPA-15a和HPA-15b分布频率分别为0.5139和0.4861;基因型HPA-15a15b、-15a15a、-15b15b频率依次为0.2407、0.2130、0.5463;HPA-15基因分布与越南、德国、奥地利人近似,而与印地安人差异有显著性(P<0.05)。结论:山东地区汉族人HPA-15基因存在多态性,并具有明显的种族和地域性差异。     

黑龙江省满族人群血小板抗原1～17系统基因多态性的研究

目的 探讨黑龙江省满族人群人类血小板抗原(HPA)1～17系统基因多态性及其表达频率,建立HPA基因型资料库.方法 选择101例满族的健康无血缘关系的人群为研究对象,采用PCR-SSP技术,对HPA1～17共17个抗原系统34个等位基因进行分型,分别计算其基因频率、基因型频率.结果 黑龙江省满族人群HPA-1a、2a、3a、5a、6a、15a基因频率分别是0.99505、0.940595、0.549505、0.99505、0.9802、0.445545,HPA-4a、7a～14a、16a和17a均为1.0;HPA-1b、2b、3b、5b、6b、15b基因频率分别是0.00495、0.059405、0.450495、0.00495、0.0198、0.554455,未检测出HPA-4b、7b～14b、16b和17b.调查和分析的HPA基因组合型及其频率发现满族人群HPA基因有22种组合型,其中仅有3种基因组合型频率＞10％(42.57％),另外19种基因组合型的频率均＜10％(57.43％).黑龙江省满族HPA基因频率与黑龙江省汉族相比,HPA-3a、3b基因频率差异具有统计学意义(P＜0.05).结论 黑龙江省满族健康人群HPA1～ 17基因频率的分布与汉族人群相比有相似之处,也有本民族的自身特点.HPA-3,15系统具有高度多态性,在随机血小板输注中,供受者HPA-3、HPA-15系统不配合的机会分别为37.25％、37.20％,易发生血小板不配合而造成的同种免疫,是HPA配合性输注关注重点.     

海南岛黎族人血小板1～17抗原系统基因多态性研究

目的 调查海南岛黎族人群血小板抗原基因(human platelet alloantigens,HPA)1～17等位基因多态性,分析不同民族的差异,评估其在随机输血中供受者HPA不配合比例,为黎族人群临床血小板输注提供实验依据.方法 采用聚合酶链反应-序列特异性引物方法 对180名黎族人HPA-1～17抗原系统34个等位基因分型.结果 黎族人HPA的等位基因频率分别为:HPA-2a:0.9972,-2b:0.0028,-3a,0.4889,3b:0.5111,5a:0.9667,-5b:0.0333,-6a:0.9972,-6b:0.0028,-15a:0.4250,-15b:0.5750,其余HPA-1、-4、7、-14、-16、-17系统未检出相应HPA-b等位基因.结论 本研究结果 揭示了黎族人HPA-1～17基因型和等位基因频率分布概况,提示黎族人HPA基因频率分布具有黎族人独有的特点.在随机血小板输注中,HPA不配合的机会依次为:HPA-3为37.49%、HPA-15为36.93%、HPA-5为6.23%,只需检测供、受者HPA-3、-5、-15基因相合,就可基本达到血小板匹配性输注.     

海南岛黎族人血小板1～17抗原系统基因多态性研究

目的 调查海南岛黎族人群血小板抗原基因(human platelet alloantigens,HPA)1～17等位基因多态性,分析不同民族的差异,评估其在随机输血中供受者HPA不配合比例,为黎族人群临床血小板输注提供实验依据.方法 采用聚合酶链反应-序列特异性引物方法 对180名黎族人HPA-1～17抗原系统34个等位基因分型.结果 黎族人HPA的等位基因频率分别为:HPA-2a:0.9972,-2b:0.0028,-3a,0.4889,3b:0.5111,5a:0.9667,-5b:0.0333,-6a:0.9972,-6b:0.0028,-15a:0.4250,-15b:0.5750,其余HPA-1、-4、7、-14、-16、-17系统未检出相应HPA-b等位基因.结论 本研究结果 揭示了黎族人HPA-1～17基因型和等位基因频率分布概况,提示黎族人HPA基因频率分布具有黎族人独有的特点.在随机血小板输注中,HPA不配合的机会依次为:HPA-3为37.49%、HPA-15为36.93%、HPA-5为6.23%,只需检测供、受者HPA-3、-5、-15基因相合,就可基本达到血小板匹配性输注.     

海南岛黎族人血小板1～17抗原系统基因多态性研究

目的 调查海南岛黎族人群血小板抗原基因(human platelet alloantigens,HPA)1～17等位基因多态性,分析不同民族的差异,评估其在随机输血中供受者HPA不配合比例,为黎族人群临床血小板输注提供实验依据.方法 采用聚合酶链反应-序列特异性引物方法 对180名黎族人HPA-1～17抗原系统34个等位基因分型.结果 黎族人HPA的等位基因频率分别为:HPA-2a:0.9972,-2b:0.0028,-3a,0.4889,3b:0.5111,5a:0.9667,-5b:0.0333,-6a:0.9972,-6b:0.0028,-15a:0.4250,-15b:0.5750,其余HPA-1、-4、7、-14、-16、-17系统未检出相应HPA-b等位基因.结论 本研究结果 揭示了黎族人HPA-1～17基因型和等位基因频率分布概况,提示黎族人HPA基因频率分布具有黎族人独有的特点.在随机血小板输注中,HPA不配合的机会依次为:HPA-3为37.49%、HPA-15为36.93%、HPA-5为6.23%,只需检测供、受者HPA-3、-5、-15基因相合,就可基本达到血小板匹配性输注.     

HMG-CoA 还原酶基因多态性与血浆血脂的关系

目的 探讨3—羟—3甲基戊二酰辅酶A(3—hydroxy—3—methylglutaryl coenzyme A，HMG—CoA)还原酶基因多态性在中国汉族人群中的分布及其与冠心病(coronary heart disease,CHD)的关系。方法 用聚合酶链反应—限制性片段长度多态性方法分析HMG—CoA还原酶基因第2内含子区ScrFl酶切多态性。结果 ScrFl多态位点等位基因A、a频率在CHD组和正常对照组分别为0．519、0．481和0．440、0．560。基因频率分布符合Hardy—Weinberg平衡定律。ScrF1酶切多态性基因型频率、等位基因A、a频率在组间比较差异无显著性(P＞0．05)，但是，基因型为AA的冠心病患者，其血浆极低密度脂蛋白、胆固醇水平显著高于其他基因型患者(P＜0．05)。中国人ScrFl多态位点A、a等位基因频率与欧洲白人比较差异有显著性(0．44vs0．55，0．56vs0．45，P＜0．05)，可能由于标本的种族来源不同所致。结论 ScrFl酶切多态性与CHD无相关性(P＞0．05)，但是，患者组AA基因型与血浆极低密度脂蛋白、胆固醇水平密切相关(P＜0．05)。     

5-羟色胺转运体基因启动子连锁多态区多态性与早发心肌梗死及血小板膜糖蛋白Ⅰb的关系

目的 研究中国北方汉族人群5-羟色胺转运体基因启动子连锁多态区(5-hydroxytryptamine transporter gene linked polymorphic region,5-HTTLPR)缺失/插人多态性与早发心肌梗死及血小板膜糖蛋白I b(gIycoprotein I b,GP I b)的关系.方法 采用性别、年龄配对方法 ,选择150例早发心肌梗死患者和150例冠状动脉造影阴性对照者作为研究对象.采用聚合酶链反应技术检测受试对象5-HTTLPR多态性位点的基因型和等位基因分布,全血流式细胞术检测血小板膜GPIb阳性百分率及平均荧光强度.结果 5-HTTLPR基因型LL型、LS型和SS型在心肌梗死组分布频率分别为32%,47%,21%,在对照组为17%,43%和39%(P＜0.01).L等位基因频率在心肌梗死组明显高于对照组(56%vs 39%,P＜0.01).心肌梗死组和对照组内不同基因型的血小板膜GPIb指标比较,LL基因型的血小板膜GP I b阳性百分率及荧光强度均低于同组LS型和SS型(均P＜0.01),多因素Logistic回归分析结果 提示5-HTTLPR的LL基因型与早发心肌梗死发病独立相关(OR=1.961,P=0.037).结论 5-HTTLPR的LL纯合子血小板活化程度增高,LL基因型可能与中国北方汉族人群早发心肌梗死的发病相关联.     

山东汉族人群中发现一例罕见的血小板特异性抗原HPA-10bw等位基因CSCD

目的探讨山东汉族人群血小板抗原系统10(HPA-10w)的基因多态性, 补充本地区血小板供者库数据。方法应用PCR特异性引物分析法(PCR sequence specific primer)和直接测序方法对山东地区汉族血小板捐献者样本进行HPA-10等位基因分型。结果在1401例山东汉族机采血小板捐献者中, 发现一例罕见的HPA-10w(a+b+)杂合子携带者。HPA-10bw等位基因频率在山东汉族人群中约为0.035%。结论山东汉族人群中HPA-10bw低频抗原的检出, 对诊断和预防新生儿同种免疫血小板减少症(neonatal alloimmune thrombocytopenic purpura, NAIT)以及输血后紫癜(post-transfusion purpura, PTP)具有临床意义。     

汉族人群血小板同种抗原HPA-3、HPA-9w多态性分布

目的研究我国不同汉族人群血小板同地区种抗原HPA-3、HPA-9w多态性。方法采用聚合酶链反应-序列特异性引物(polymerase chain reaction-sequence specific primers,PCR-SSP)技术对1000名来自不同省份汉族无关献血者进行HPA-3、HPA-9w抗原基因分型。结果在调查的1000名汉族人群中HPA-3a、HPA-3b基因频率分别为0.5935和0.4065,HPA-9全为a/a纯合子。经χ2检测,符合Hardy-Weinberg平衡。不同地区汉族人群之间比较,广东省与陕西、黑龙江、浙江、云南、江苏5省的HPA-3多态性分布差异有统计学意义,其余省份之间多态性分布差异无统计学意义。中国汉族人群与越南人、澳大利亚人HPA-3的多态性分布差异有统计学意义。结论在随机输血中供受者HPA-3抗原不配合比例达0.3661,这为研究同种免疫血小板减少症、开展血小板同型输注提供了理论基础。     

两例罕见的血小板抗原HPA-21bw等位基因报告

目的:调查中国人群人类血小板抗原HPA-21w多态性.方法:采用聚合酶链反应-序列特异性引物法(PCR-SSP)基因分型技术,对广州汉族血小板献血者进行HPA-21w基因分型,并使用PCR扩增HPA-21w基因片段,进行DNA测序验证.结果:在200例受检者中发现2例HPA-21 a/b杂合子个体,DNA测序表明GPIIIa编码基因1960位G→A,导致GPIIIa膜糖蛋白第628位谷氨酸被赖氨酸所取代,产生HPA-21 bw抗原特异性.中国人群HPA-21 bw的等位基因频率为0.50％.结论:在中国人群首次检出HPA-21 bw等位基因,提示在血小板同种免疫症的诊断和血小板输注治疗中,该抗原具有免疫学意义.     

Association between polymorphisms of platelet membrane glycoprotein Ibα and risk of coronary heart disease in Han Chinese,Henan, China

Objective: To study the relationship between human platelet alloantigens-2 (HPA-2) polymorphism, Kozak sequence polymorphism, macroglycopeptide region variable number of tandem repeats (VNTR) polymorphism of GPIbα and coronary heart disease (CHD). Methods: In the present study, blood obtained from 403 patients with CHD and 500 healthy controls was detected by PCR or PCR-RFLP methods to analyze the genotypes of HPA-2, Kozak sequence and VNTR. Results: About HPA-2 polymorphism, there were significant differences between CHD group and control group in TM+MM genotype (13.15% vs. 8.60%, P < 0.05; OR 1.609; 95% CI 1.051 to 2.463) and M alleles distributions (6.58% vs. 4.40%, P < 0.05; OR 1.645; 95% CI 1.090 to 2.482). For Kozak sequence polymorphism, between control group and CHD group, the difference of CC genotype distribution is statistic significance (3.20% vs. 7.69%, P < 0.05; OR 2.000; 95% CI 1.076 to 3.718). The genotype analysis of VNTR in Han People of Henan (AC, BC, BD, CC, CD and DD) proved that no association between any genotypes or alleles and CHD. There weren’t any significant differences about haplotypes of these genes between control group and CHD group (P > 0.05). Conclusions: The M allele of HPA-2 could be an important risk factor for CHD; the CC genotype of Kozak sequence would be a biomarker of genetic susceptibility about CHD; and each genotype of VNTR is no associated with CHD. No significant differences between control group and CHD group about haplotypes of these genes.     

脂联素基因SNP+45 T/G单核苷酸多态性与冠心病的相关性研究

目的:研究中国华南地区汉族人脂联素基因SNP+45T/G单核苷酸多态性与冠心病的相关性。方法:以153例冠脉造影证实为冠心病的非糖尿病患者为冠心病组,以73例健康者为对照组,采用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法分析脂联素基因SNP+45T/G单核苷酸多态性与冠心病的相关性,ELISA法测定血浆脂联素水平。结果:冠心病组T/G+G/G型频率、G等位基因频率均高于对照组(P0.05)。Logistic回归分析发现脂联素基因SNP+45 T/G+G/G型与冠心病正相关(OR:2.132,95.0%C I:1.034-4.397,P0.05),血浆脂联素水平与冠心病的发病呈负相关(OR:0.868,95.0%C I:0.785-0.959,P0.05)。结论:脂联素基因SNP+45 T/G+G/G型可能是华南地区汉族人冠心病的易感基因型。     

Haplotype Analysis of the Stromelysin-1 (MMP3) and Gelatinase B (MMP9) Genes in Relation to Coronary Heart Disease

The functional genetic polymorphisms present in the promoters of stromelysin-1 ( MMP3 ) and gelatinase B ( MMP9 ) have been shown to be associated with angiographically measured atherosclerosis; however, haplotype analysis of the genetic polymorphisms occurring in the promoters and coding regions of MMP3 and MMP9 has been infrequently performed in the past. The aim of this study was to analyze the occurrence of the -1612 5A/6A , -376C/G , and Glu45Lys polymorphisms of MMP3 and the -1562C/T and R279Q polymorphisms of MMP9 and their relation to the risk of coronary heart disease (CHD; stenosis ≥50% of the diameter in at least one major coronary artery) in a Chinese Han population. The present study involved 1373 patients with CHD and 695 healthy controls. The Glu45Lys polymorphism of MMP3 was significantly associated with an increased risk of CHD. Compared with the 45Glu homozygotes, 45Lys allele carriers had a significantly elevated risk of CHD (adjusted OR = 1.50; 95%CI 1.11–2.03; p = 0.008). Moreover, haplotype analysis identified both the 6A-C-Lys (-1612 6A, -376C, 45Lys) haplotype and the 6A-G-Lys (-1612 6A,-376G, 45Lys) haplotype of MMP3 as associated with an increased risk of CHD. Our study suggests that common genetic variations in the MMP3 gene may affect the risk of CHD in the Chinese population.     

囊泡相关膜蛋白8基因多态性与冠状动脉粥样硬化性心脏病的相关性研究

目的 研究囊泡相关膜蛋白8(synaptobrevins/vesicle-associated membrane proteins 8,VAMP8)基因rs1010多态性在中国汉族人群中的分布及与冠状动脉粥样硬化性心脏病(简称冠心病)的相关性.方法 采用聚合酶链反应-限制性片段长度多态性技术,对汉族185例冠心病患者及149名正常人VAMP8 rs1010基因多态性,基因型及等位基因频率分布进行研究.结果 研究人群中存在VAMP8 rs1010基因多态性,基因型符合Hardy-Weinberg平衡,冠心病患者A等位基因频率显著高于对照组(67.3%VS 53.0%,P<0.05).Logistic回归分析得出:VAMP8基因(AA+AG)基因型是冠心病的独立危险因素,(AA+AG)基因型比GG基因型的比数比为1.969,95%可信区间为1.032～3.755.结论 VAMP8 rs1010基因多态性与冠心病有关,A等位基因可能是汉族人群冠心病的遗传危险因素.     

冠状动脉粥样硬化性心脏病细胞问黏附分子1基因K469E多态性的研究

OBJECTIVE: To study the linkage between K469E polymorphism of intercellular adhesion molecule 1(ICAM1) gene with ICAM1 plasma level and coronary heart disease (CHD) in Han population of China. METHODS: One hundred and sixty-four controls without CHD and 160 patients with CHD were enrolled in our study. By nested PCR with allele-specific oligonucleotide primers, all patients and controls were genotyped for the ICAM1 polymorphism. And the ICAM1 plasma level was measured by ELISA. RESULTS: In the patients with CHD, both K allele frequency and the plasma level of ICAM1 were higher than those in control (P<0.05). The individual with K allele had higher plasma level of ICAM1 than that without K allele (344.34+/-128.59 microg/L vs 303.54+/-108.74 microg/L, P=0.008). K allele enhanced the risk of CHD (P<0.01, OR=2.158, 95%CI: 1.250-3.727). There was the K allele cooperation with smoking in influencing the risk of CHD. CONCLUSION: There is the polymorphism of ICAM1 K469E gene in Han population of China, and the K allele may be a genetic factor influencing the risk of CHD.     

细胞间黏附分子1基因K469E多态性与冠状动脉粥样硬化性心脏病的关联研究

目的研究中国汉族人群中细胞间黏附分子1（intercellular adhesion moleculel，ICAM1）基因K469E多态性与冠状动脉粥样硬化性心脏病（简称冠心病）的关联。方法采用聚合酶链反应．限制性片段长度多态性方法检测了173例冠心病患者和141名对照的ICAM1基因K469E基因型和等位基因的分布。结果基因型频率符合Hardy-Weinberg平衡。冠心病组的KK基因型的频率显著高于对照组（64．2％比48．9％，P〈0．01），同样，冠心病组K等位基因的频率显著高于对照组（79．2％比69．9％，P〈0．01）。经Logistic回归分析排除年龄，性别，和冠心病其它危险因素的影响后，KK纯合子患冠心病的危险性是KE和EE基因型的2．35倍（95％CI：1．03-5．36，P〈0．05）。结论ICAM1基因K469E多态性与中国汉族人冠心病的危险性相关，其中K等位基因可能是冠心病的遗传危险因素。     

巨噬细胞移动抑制因子-173G/C多态性与冠心病的相关性研究

目的研究巨噬细胞移动抑制因子（macrophage migration inhibitory factor, MIF）基因MIF 5′非翻译区-173G／C多态性在中国南方汉族人群中的分布及与冠心病的相关性。方法采用聚合酶链反应-限制性片段长度多态性技术，对汉族138例冠心病患者及163名正常人群MIF基因-173G／C位点进行研究，对于限制酶酶切结果再进行DNA测序鉴定。结果冠心病患者与正常对照中只检出-173GG和-173GC基因型，均未检出-173CC基因型。正常人群和冠心病患者的MIF-173G等位基因频率分别为0．966和0．917，MIF-173C等位基因频率分别为0．034和0．083，冠心病患者MIF-173GC基因型频率（0．167）明显高于对照组（0．068）（OR：2．764，95％CI：1．295～5．899；P=0．007）。结论MIF基因-173G／C位点多态性与冠心病有关，C等位基因可能是汉族人群冠心病的易感性标志。     

MTHFR基因C677T多态性与冠心病患者血浆同型半胱氨酸和叶酸水平相关

目的研究宁夏地区汉族人群5,10-亚甲基四氢叶酸还原酶基因(MTHFR)C677T多态性、同型半胱氨酸水平(Hcy)及叶酸水平与冠心病(CHD)的相关性。方法用病例-对照研究方法、应用限制性片段长度多态性扩增技术(PCR-RFLP)分析宁夏地区汉族202例冠心病患者及199例正常人群MTHFRC677T基因型频率及基因频率的分布特点。荧光偏振免疫分析法测定血浆Hcy水平,化学发光免疫分析法测定血清叶酸、VitB12浓度。结果 (1)病例组与对照组MTHFRC677T基因型频率分别为CC型23.3%vs20.7%、CT型52.3%vs54.5%和TT型24.4%vs24.8%,两组间基因型及等位基因频率分布无差异。(2)冠心病患者组中MTHFR基因C677TCC基因型患者血浆Hcy浓度(10.84μmol/L)较T基因携带者(12.24μmol/L)低(P<0.01)。CC基因型患者血浆叶酸浓度(5.38μg/L)较T基因携带者(3.72μg/L)高(P<0.05)。结论 MTHFRC677T的3种基因型频率在宁夏汉族冠心病患者和正常人群中的分布无统计学意义。MTHFR基因C677T多态性与冠心病的危险因素Hc...     

细胞间黏附分子-1基因K469E多态性与冠心病关系的研究

目的：探讨细胞间黏附分子-1（ICAM-1）基因K469E多态性在冠心病及正常人群中的分布，初步分析其基因型及血清水平与冠心病的关系。方法：采用聚合酶链反应-限制性片段长度多态性（PCR—RFLP）技术和DNA序列测定法，检测了225例冠心病患者和230例对照者的ICAM-1基因K469E多态性，并用酶联免疫吸附试验检测了ICAM-1的血清水平。结果：冠心病组血清ICAM-1水平显著高于对照组（P〈0．01），ICAM-1基因型及等位基因的分布频率在冠心病组和对照组间比较差异具有显著性（P〈0．05），K等位基因携带者患冠心病的相对风险度是E等位基因的1．430倍（与对照组相比），而患心肌梗死的相对风险度是1．816倍（与心绞痛组相比）。结论：ICAM-1基因K469E多态性与冠心病的发生、发展及该疾病的严重程度密切相关，其中K等位基因可能是冠心病发病的遗传易感基因。     

Association of the gene polymorphisms of platelet glycoprotein Ia and IIb/IIIa with myocardial infarction and extent of coronary artery disease in the Korean population

Platelet membrane receptor glycoproteins (GP) are essential for the platelet activation process, and the genetic polymorphisms in the genes that encode platelet glycoproteins have been proposed to influence the risk of acute coronary syndrome and atherosclerosis. In this study, we investigated the role of GPIa, HPA-1 and HPA-3 polymorphisms as putative risk factors for myocardial infarction (MI) and the extent of coronary artery disease. We selected 1,073 subjects who underwent coronary angiography; 242 had normal or minimal coronary atherosclerosis, and 831 patients had significant coronary artery disease (CAD). The genotype was determined by the methods of single base extension for C807T/G873A polymorphisms of GPIa, and restriction fragment length polymorphism for HPA-1 and HPA-3. The C807T and G873A polymorphisms of GPIa showed complete linkage in the Korean population. For HPA-1 gene polymorphism, only the HPA-1a/a (PlA1/A1) genotype was observed in 192 selected subjects from our study population. The distribution of GPIa (C807T/G873A) and HPA-3 genotypes did not differ significantly between normal subjects and CAD subjects. No significant association between MI and both gene polymorphisms was present. However, for the subgroup analysis of young male patients whose age was less than 56 years, the genotype frequency of HPA-3b/b was significantly lower in patients with MI compared to patients without a history of MI (7.5% vs. 20.0%, p=0.04). The odds ratio for HPA-3 b homozygosity versus the HPA-3a carrier was 0.32 (95% CI, 0.10- 0.99, p=0.04). Conclusively, HPA-3 polymorphism was associated with MI in Korean individuals younger than 56 years of age, but other polymorphisms of GP, which we studied, were not associated with both the extent of coronary atherosclerosis or MI.