降钙素受体基因多态性与特发性高钙尿症的相关性研究

目的了解降钙素受体（CTR）基因单核苷酸多态性与特发性高钙尿症的关系，探讨特发性高钙尿的发病机理。方法提取湖北地区76例汉族特发性高钙尿患者及126例健康对照者外周血标本基因组DNA，应用聚合酶链反应-限制性片段长度多态性方法检测并分析CTR基因核苷酸序列1377位点C／T单核苷酸多态性分布。结果2组标本CTR基因C／T多态性位点等位基因频率分布均符合Hardy-Weinberg定律，患者组CC、TC、TT基因型分布频率分别为73．7％、17．1％、9．2％，对照组分别为89．7％、9．5％、0．8％；2组等位基因c、T分布频率分别为84．2％、15．8％和94．4％、5．6％，患者组等位基因T和TT基因型分布频率高于对照组，而等位基因C和CC基因型的分布频率低于对照组，差异有统计学意义（P〈0．05）。结论CTR基因1377多态性位点C／T单核苷酸多态性在湖北地区汉族人群特发性高钙尿的发生中起重要作用。     

SLC2A9基因多态性与机体代谢及肾结石的相关性研究

目的:探讨葡萄糖易化转运蛋白9(SLC2A9)基因SNP位点多态性与机体生化代谢及肾结石的相关性和可能机制。方法:选择2015年1月～2017年12月在我院就诊的华东地区汉族人群肾结石患者300例(结石组)和健康志愿者300例(健康对照组),用聚合酶链式反应(PCR)扩增SLC2A9基因3个SNP位点(rs938552、rs1014290和rs4311316)序列,Sanger法测序扩增产物;同时检测结石组血清、尿液中钙、磷、尿酸等生化代谢指标。分析结石组与健康对照组中基因型分布差异以及结石组中不同基因携带者的血、尿电解质、尿酸等代谢水平的差异。结果:SLC2A9基因SNP位点rs938552存在多态性,其基因型分布在结石组和健康对照组之间比较差异有统计学意义(OR=0.341,95%CI:0.206～0.563,P0.01),携带有杂合型(C/T)和突变型(T/T)的人群患肾结石的风险是携带野生型(C/C)人群的2.933倍;结石组中C/C基因型者血尿酸、尿尿酸、尿钙均低于C/T+T/T基因型者,C/C基因型者尿pH值高于C/T+T/T基因型者,差异均有统计学意义(P0.05),其他代谢指标无统计学意义;C/C基因型与C/T+T/T基因型比较,后者结石的主要成分草酸钙和尿酸的比例明显高于前者(P0.05)。位点rs1014290和rs4311316在结石组和健康对照组基因型分布比较差异无统计学意义(OR=0.608,95%CI:0.364～1.014,P0.05;OR=0.641,95%CI:0.407～1.008,P0.05),其C/C基因型与C/T+T/T基因型比较,血尿生化及结石主要成分无统计学意义(P0.05)。结论:SLC2A9基因rs938552位点多态性与华东地区汉族人群患肾结石的风险有关联,SLC2A9基因rs938552位点可能通过调节尿酸和钙的代谢来影响结石的形成。     

MTHFR基因多态性在台州地区原发性男性不育症中的研究

目的探讨亚甲基四氢叶酸还原酶(MTHFR)基因C677T和A1298C位点多态性与原发性男性不育症的关系。方法选取2018年1～7月在台州市中心医院就诊的的原发性男性不育患者104例为研究对象,选取同期健康查体的已育男性108例为对照组。采用荧光定量PCR技术检测104例男性不育症患者和108例健康已育男性的MTHFR C677T和A1298C位点的多态性,统计学分析不同基因型男性与原发性不育的相关性。结果原发性男性不育组和健康对照组MTHFRC677T位点TT基因型频率分别为23.08%、12.96%,T等位基因频率分别为43.75%、33.33%,两组间基因型频率和基因频率均存在显著性差异(χ~2=6.975,χ~2=4.859,P0.05);原发性男性不育组和健康对照组的MTHFR A1298C位点CC基因型频率和C等位基因频率均无显著性差异(χ~2=0.108,χ~2=0.170,P0.05)。结论 MTHFR基因677位点C-T变异与原发性男性不育具有相关性,1298位点多态性与原发性男性不育无显著相关性。     

PRM1基因C321A、G197T单核苷酸多态性对体外受精结局的影响

目的 探讨鱼精蛋白1的C321A、G197T基因多态性与体外受精结局的关系。方法 选取我院生殖中心进行常规IVF的182例(182个周期),根据受精率分为3组:A组受精率30%,43个周期;B组受精率在30%~65%之间,24个周期;C组受精率65%,115个周期。提取授精后剩余精子的基因组DNA,采用聚合酶链限制性片段长度多态性(PCRRFLP)方法检测PRM1基因C321A和G197T基因型频率和分布,比较3组间基因型的分布差异及所有研究对象不同基因型间受精率的差异。结果 3组间比较,PRM1基因C321A多态性位点的各基因型频率无显著性差异(P0.05),C321A多态性位点与IVF受精率无相关性(P0.05)。在A组中,PRM1基因G197T多态性位点GG、GT、TT基因型分布频率分别为9.3%(4)、25.6%(11)、65.1%(28);B组分别为8.3%(2)、25.0%(6)、66.7%(16);C组分别为38.3%(44)、26.1%(30)、35.6%(41)。A组和B组的TT基因型频率显著高于C组(65.1%vs.35.6%,66.7%vs.35.6%),差异均有统计学意义(P0.05),TT基因型增加了IVF受精失败的风险。结论 PRM1基因C321A多态性与IVF受精率不相关;PRM1基因G197T多态性改变与IVF受精率相关。     

瘦素基因启动子区-2548 G/A多态性与胆囊胆固醇结石的相关性分析

目的探讨瘦素基因启动子区-2548 G/A功能多态性与胆囊胆固醇结石之间的相关性。方法采用聚合酶链反应-限制性片段长度多态性技术对118例胆囊结石患者和53例正常对照人群进行瘦素基因启动子区-2548 G/A基因多态性分析,研究等位基因和基因型分布规律。结果瘦素基因启动子区-2548 G/A多态性在2组中的分布差异有统计学意义,胆囊结石组中AA+GA基因型频率明显高于对照组(2χ=4.251,P=0.039),AA+AG基因型患胆囊结石的风险是GG基因型的2.813倍(OR=2.813,95%CI=1.020～7.757)。等位基因频率在2组中分布也存在差异,胆囊结石组A等位基因频率明显高于对照组(2χ=5.791,P=0.016),A等位基因携带者患胆囊结石的风险是G等位基因携带者的1.777倍(OR=1.777,95%CI=1.110～2.844)。结论瘦素基因启动子区-2548 G/A功能多态性与胆囊结石易感性有关,A等位基因是胆囊结石发病的遗传易感基因,G等位基因是胆囊结石的保护基因。     

乳腺癌亚甲基四氢叶酸还原酶基因多态性的临床意义

目的：探讨乳腺癌亚甲基四氢叶酸还原酶（MTHFR）基因多态性的临床意义。方法：收集54例乳腺癌女性患者血液样本（研究组）和93例正常女性血液样本（对照组）,均进行DNA提取、PCR扩增、DNA限制性片段长度多态性分析。分析MTHFR C677T、A1298C基因型在乳腺癌女性和正常女性中的分布差异。结果：PCR-RFLP法检测显示,MTHFR基因野生型纯合子CC(198 bp)只有1条带,MTHFR杂合子CT(198 bp、175 bp)产生2条带,MTHFR变异型纯合子TT(175 bp)只有1条带。研究组MTHFR 677CC、677CT和677TT基因型频率分别为37.04%、51.58%和11.11%,677C、677T等位基因频率分别为62.96%、21.51%;对照组MTHFR 677CC、CT和TT基因型频率分别为34.41%、48.39%和17.20%,677C、677T等位基因频率分别为37.04%、41.40%。两组MTHFR C677T基因型频率和等位基因频率比较差异均无统计学意义（P均>0.05）。研究组MTHFR 1298AA、AC、CC基因型频率分别为...     

内皮细胞型一氧化氮合酶基因多态性与前列腺癌的相关性研究

目的 探讨内皮细胞型一氧化氮合酶(ecNOS)基因多态性与前列腺癌(PCa)是否存在相关性.方法 分别采用聚合酶链反应-限制性片段长度多态性方法(PCR-RFLP)和序列特异性引物扩增方法(PCR-SSP),检测78例PCa患者和88例前列腺增生(BPH)患者的ecNOS基因G894T和ecNOS 4a/b VNTR多态性,分析两组ecNOS G894T和ecNOS 4a/b VNTR的基因型频率与等位基因频率的差异.结果 ecNOSG894T存在G、T 2种等位基因以及GG、GT、TT 3种基因型,ecNOS4a/b VNTR存在a、b 2种等位基因以及aa、ab及bb 3种基因型.PCa组与BPH组相比,ecNOS G894T和ecNOS4a/b VNTR的基因型频率及等位基因频率差异无统计学意义(P均>0.05).结论 ecNOS基因多态性不是前列腺癌发病的遗传危险因素.     

载脂蛋白E与胆囊胆固醇结石关系的研究

目的 探讨载脂蛋白Ｅ（ａｐｏｌｉｐｏｐｒｏｔｅｉｎ Ｅ）基因多态性与胆囊胆固醇结石形成的关系。方法 应用聚合酶链反应（ＰＣＲ）技术检测６０例健康人和４０例胆囊胆固醇结石患者的Ａｐｏ Ｅ基因多态性及等位基因频率。结果 胆囊胆固醇结石患者Ａｐｏ Ｅ基因型Ｅ３／４的频率２３％（９／４０）明显高于健康对照组７％（４／６０）（Ｐ〈０．０５）,胆囊胆固醇结石患者组ε４等位基因频率为１５％（１２／８０）,明显高     

肾移植受者细胞因子基因多态性与术后发生感染的关系

目的　观察和分析肾移植受者术后感染的发生与细胞因子和细胞因子受体基因多态性的关系。方法　根据肾移植术后6个月内是否发生感染,将 126 例受者分为感染组和未感染组。比较两组受者发生感染的主要影响因素;13种细胞因子及受体 22 个位点的基因型分布情况; IL 6、TNF α、TGF β、IL 10高、中、低表达型的分布情况。根据受者发生和未发生急性排斥,分别比较阳性基因多态性的各种基因型在感染和未感染组中的分布情况。结果　感染组急性排斥发生率为55.4%,而未感染组则为14.3%,差异有统计学意义(P<0.05);IL 1α 889C/C、IL 1β 511C/C、IL 1β 3962C/T和T/T基因型频率及TGF β1高表达型频率明显高于未感染组(P<0.05)。未发生急性排斥的感染者中,IL 1β 511C/C基因型频率高于未感染者(P<0.05);发生急性排斥的感染者中 TGF β1(密10 密25)CG/TG、TGF β1(密10 密 25)高表达型的频率明显高于未感染者(P<0.05)。结论　肾移植术后发生急性排斥反应是感染发生的危险因素,受者的 IL 1α 889C/C、IL 1β 511C/C、TGF β1(密10 密25)高表达型(含CG/TG)与肾移植后感染的发生明显相关。     

瘢痕疙瘩发病风险与p53基因第72位密码子多态性的关系

目的 研究p53基因第72位密码子多态性与瘢痕疙瘩发病风险的关系。方法 采用聚合酶链反应-反向点杂交、DNA直接测序方法检测了45例瘢痕疙瘩患者与60名正常对照的p53基因第72位密码子多态性位点的基因型。结果 瘢痕疙瘩患者的Pro等位基因频率明显高于正常对照组(x^2=4．485，P=0．034)。瘢痕疙瘩患者的Pro／Arg、Arg／Arg基因型频率与正常对照组相比差异无统计学意义(x^2值分别为0．949和1．346；P值分别为0．330和0．246)，而瘢痕疙瘩患者的Pro／Pro基因型频率明显高于对照组(x^2=4．375，P=0．036)。提示Pro／Pro基因型者患瘢痕疙瘩的风险性明显高于Pro／Arg、Arg／Arg基因型者(OR=2．400，95％CI：1．048～5．498)。结论 p53基因第72位密码子多态性位点的基因型检测可能对判断瘢痕疙瘩高危个体具有指导意义。     

Megsin 2093T-2180C haplotype at the 3' untranslated region is associated with poor renal survival in Korean IgA nephropathy patients

AIMS: Megsin is a mesangial cell-predominant gene which belongs to the serpin superfamily. The expression of megsin was upregulated and coincided with mesangial proliferation and extracellular matrix expansion in IgA nephropathy (IgAN). In the present study, we evaluated the influence of the C2093T and C2180T polymorphism within the 3' untranslated region (3'UTR) of megsin gene and its haplotypes on the development and progression of Korean IgAN patients. METHODS: Korean IgAN patients (n = 260) with a minimal follow-up of 4 years were recruited. Healthy subjects with normal renal function, normal urinalysis and normotension (n = 315) were included as controls. The polymorphisms were determined by the 5' nuclease allelic discrimination assay, and the haplotypes were constructed using the Phase program. RESULTS: The C2093T and C2180T genotype and allele frequencies were not different significantly between IgAN patients and controls. In C2093T polymorphism, patients with CC genotype showed a better renal survival than those with CT or TT genotypes by Kaplan-Meier analysis (p = 0.027). The megsin C2093T polymorphism remained an independent risk factor for progression (Cox regression model, HR for TT genotype: 3.52, 95% CI 1.69 - 7.34; HR for CT genotype: 2.15, 95% CI 1.30 - 3.57). In C2180T polymorphism, patients with TT genotype showed a better outcome than those with CC or CT genotypes (p = 0.025). The C2180T polymorphism was also an independent risk factor for progression (HR for CC genotype: 4.05, 95% CI 1.93 - 8.51; HR for CT genotype: 2.35, 95% CI 1.40 - 3.94). The two alleles showed linkage disequilibrium in phased haplotype. The patients with 2093T-2180C haplotype showed a poor renal survival compared to those with 2093C-2180T haplotype (p = 0.028). The haplotype remained an independent risk factor for progression (HR for 2093T-2180C haplotype: 2.01, 95% CI 1.44 - 2.81). CONCLUSIONS: Our results suggest that the 2093T-2180C haplotype at the 3'UTR of megsin gene is associated with rapid disease progression in Korean IgAN patients. This is the reverse of the results from the Chinese IgAN patients. Further studies are strongly needed to elucidate the reasons of disparity.     

Human kallikrein-2 gene polymorphism is associated with the occurrence of prostate cancer

PURPOSE: Human glandular kallikrein, which is encoded by the human kallikrein-2 (KLK2) gene, is significantly associated with the occurrence of prostate cancer (PCa). We tested the association between a functional C748T polymorphism of the KLK2 gene and the occurrence of PCa. MATERIALS AND METHODS: Peripheral venous blood samples were obtained from 254 patients with PCa and 168 controls with benign prostatic hyperplasia. All control subjects had normal serum prostate specific antigen and proved to be free from malignancy on pathological examination of resected prostatic tissues. Serum prostate specific antigen, testosterone, Gleason score, clinical and pathological stage, tumor and prostate volume of the patients were investigated. The KLK2 gene polymorphism was determined by the polymerase chain reaction based restriction fragment length polymorphism method. RESULTS: The PCa group had a younger mean age +/- SEM (73.0 +/- 0.5 vs 74.7 +/- 0.5 years, p = 0.010) and higher C allele frequency (82.1% vs 74.7%, p = 0.010) than the control group. The frequency of the CC, CT and TT genotypes was 65.7%, 32.7% and 1.6% in patients with PCa, and 56.0%, 37.5% and 6.5%, respectively, in controls (p = 0.010). C allele carriers (CC and CT genotypes) were at significantly higher risk for PCa than TT homozygous subjects (p = 0.002). CC homozygous subjects were at significantly higher risk for PCa than T allele carriers (CT and TT genotypes) (p = 0.043). The PCa subgroup of patients with pathologically proved, localized PCa also had a higher frequency of the C allele (87.5% vs 74.7%, p = 0.026) and CC genotypes (78.7% vs 56.0%, p = 0.019) than controls. CONCLUSIONS: Our results suggest that the C allele of the functional C748T polymorphism of KLK2 may increase the risk of PCa.     

血管内皮生长因子936C／T基因多态性与结直肠腺瘤易感性的关系

目的探讨血管内皮生长因子（VEGF）1498C／T、936C／T基因多态性与结直肠腺瘤易感性的关系。方法对224份结直肠腺瘤及200份正常对照标本进行研究．应用TaqMa。探针法检测VEGF1498C／T、936C／T基因型,搜集相对应的临床病理资料。结果与VEGF936CC基因型相比．CT基因型和CT＋TT基因型患者结直肠腺瘤的发生危险显著增加（DR=2．00,95％CI：1．23—3．25,P=0．006;OR=2．04,95％C1：1．28—3．26,P=0．003）;与VEGF936-C等位基因相比,T等位基因携带者结直肠腺瘤的发生危险亦显著增加（DR=1．91,95％CI：1．25—2．91．P=0．003）。结直肠腺瘤患者为VEGF936CT＋TT基因型或携带T等位基因,其病理类型倾向于绒毛状腺瘤（OR=2．54,95％CI：1．12—5．75,P：0．040;OR=3．08,95％CI：1．64-5．80,P=0．001）。VEGF1498C／T基因多态性在腺瘤组与对照组间的差异无统计学意义（19〉0．05）。结论VEGF936C／T基凶多态性与结直肠腺瘤易感性密切相关。     

Association of transforming growth factor-beta (TGF-beta) T869C (Leu 10Pro) gene polymorphisms with type 2 diabetic nephropathy in Chinese

INTRODUCTION: Transforming growth factor-beta (TGF-beta) is known to play a pivotal role in the regulation of extracellular matrix (ECM) accumulation. Since diabetic nephropathy (DMN) is characterized by basement membrane thickening and mesangial expansion, control of ECM deposition is believed to be important in the pathogenesis of the disease. Recently, TGF-beta T869C (Leu 10Pro) gene polymorphism has been identified which may be associated with circulating TGF-beta levels. METHODS: In order to examine the relationship between TGF-beta gene polymorphism with DMN in Chinese, we carried out a case-control study, which recruited 123 Chinese type 2 diabetic patients with an average duration of diabetes for 12 years. A total of 58 patients who developed DMN (micro- or macroalbuminuria, with or without renal impairment) were compared with 65 diabetic patients without DMN despite similar duration of disease (normoalbuminuric and creatinine <120 micromol/L). TGF-beta T869C (Leu 10Pro) gene polymorphism was determined by polymerase chain reaction (PCR). RESULTS: Both groups of patients had similar baseline characteristics, including blood pressure, diabetic control, and duration of diabetes. Distribution of TGF-beta T869C (Leu 10Pro) genotype among the whole group is confined to Hardy Weinberg equilibrium. The DMN+ group has higher frequency of TGF-beta CC/CT genotypes than the DMN- group [CC, CT, TT = (DMN+) 46, 45, 9 (%) vs. (DMN-) 37, 37, 26 (%), P < 0.05]. C allele frequency is also higher in the DMN+ group than DMN- group (69% vs. 55%, P < 0.05). The adjusted odds ratio for TGF-beta CC/CT vs. TT genotype to develop DMN is 3.8 (3.2 to 4.4). Multivariate logistic regression analysis [hypertension, gender, age, duration of diabetes, hemoglobin (HbA1c), usage of angiotensin-converting enzyme (ACE) inhibitor, and cholesterol level] showed that TGF-beta genotype (P = 0.03) is an independent predictor for type 2 DMN. Among patients with DMN, those with TGF-beta CC/CT genotypes also had worse renal function and increased risk for macroalbuminuria. CONCLUSION: Our results suggest that TGF-beta T869C (Leu 10Pro) gene polymorphism is associated with DMN in Chinese.     

护骨素基因C1217T多态性与糖皮质激素性骨质疏松症的相关关系

目的：探讨我国应用糖皮质激素患者护骨素（osteoprotegerin,OPG）基因内含子C1217T单核苷酸多态性与糖皮质激素性骨质疏松症（glucocorticoid-induced osteoporosis,GIO）的相关性.方法：应用聚合酶链反应-限制性片断长度多态性（PCR-RELP）方法测定208例正常健康人（Ⅰ组）、168例非GIO患者（Ⅱ组）和104例GIO患者（Ⅲ组）护骨素基因内含子C1217T的基因型;应用双能X线骨密度仪（DEXA）测定股骨、腰椎等部位的骨密度.结果：内含子C1217T发现CC、CT、TT3种基因型,GIO组基因型CC频率显著低于正常对照组,CT和TT基因型频率显著高于正常对照组;非GIO组、应用激素组（GIO组＋非GIO组）与正常对照组比较各基因型频率均无统计学差异.正常对照组OPG基因C1217T的CC基因型组各部位的骨密度有高于CT和TT基因型组的趋势,但无统计学差异.非GIO组和GIO组OPG基因C1217T的CC基因型组腰椎的骨密度明显高于CT和TT基因型组（P＜0.05）,分别为：非GIO组CC（1.01±0.17）g/cm^2,CT＋TT（0.99±0.07）g/cm^2;GIO组CC（0.93±0.12）g/cm^2,CT＋TT（0.81±0.08）g/cm^2.经年龄、体重指数等因素校正后,差异仍有明显意义（P＜0.05）.结论：OPG基因C1217T基因型在正常人和应用激素患者（Ⅱ、Ⅲ组）之间无明显差异,它可能与肾小球肾炎的发病无关;C1217T基因型在GIO组和正常对照组之间有明显差异,它可能与糖皮质激素性骨质疏松症的发病有关;OPG基因C1217T多态性与应用糖皮质激素患者（Ⅱ、Ⅲ组）腰椎的骨密度明显相关,等位基因C可能是骨量的保护因子,它可能与应用糖皮质激素后骨量的丢失有关.     

过氧化物酶体增殖物激活受体γC161T基因多态性与糖皮质激素性骨质疏松症的关系

目的 探讨中国人过氧化物酶体增殖物激活受体γ(PPARγ)基因外显子6 C161T多态性与糖皮质激素性骨质疏松症(GIO)的相关关系。方法 应用聚合酶链反应-限制性片段长度多态性(PCR-RELP)方法测定208例正常健康人（Ⅰ组）、168例非GIO患者（Ⅱ组）和104例GIO患者（Ⅲ组）PPARγ基因外显子6 C161T的基因型。应用双能X线骨密度仪(DEXA)测定股骨、腰椎等部位的骨密度。 结果 外显子6 C161T有CC、CT、TT 3种基因型。GIO组CC基因型频率显著低于正常对照组；CT和TT基因型频率显著高于正常对照组。非GIO组、应用激素组（GIO组＋非GIO组）与正常对照组比较，各基因型频率差异均无统计学意义。正常对照组C161T的CC基因型组各部位的骨密度有高于CT和TT基因型组的趋势，但差异无统计学意义。非GIO组和GIO组C161T的CC基因型组腰椎的骨密度明显高于CT和TT基因型组 (P ＜ 0.05)，分别为非GIO组CC型（1.04±0.17） g/cm2，CT+TT型（1.02±0.07） g/cm2；GIO组CC型（0.94±0.12） g/cm2，CT+TT型（0.83±0.08） g/cm2。经年龄、体重指数等因素校正后，差异仍有统计学意义(P ＜ 0.05）。 结论 PPARγ基因C161T基因型在正常人和应用激素患者之间无明显差异，它可能与肾小球肾炎的发病无关。C161T基因型在GIO组和正常对照组之间差异有统计学意义，它可能与糖皮质激素性骨质疏松症的发病有关。PPARγ基因C161T多态性与应用糖皮质激素患者腰椎的骨密度有关。等位基因C可能是骨量的保护因子，它可能与应用糖皮质激素后骨量的丢失有关。     

转化生长因子β1基因-509C/T多态性与原发性肾病综合征肾小管间质损伤的关系

目的 研究转化生长因子β1（TGF-β1）基因启动子－509C/T多态性与原发性肾病综合征（PNS）患者的易感性和肾小管间质损伤（TID）程度的相关性。 方法 采用聚合酶链反应-限制性片段长度多态性（PCR-RFLP）技术, 检测98例PNS患者和128名健康对照者TGF-β1基因启动子-509C/T位点的基因型, 并根据肾活检病理TID程度分级分组比较。采用双抗体夹心ELISA法,测定所有受试对象的血清TGF-β1水平。同时测尿蛋白量（24 h）、Scr、BUN、血压等。 结果 （1）PNS患者及健康对照人群均能检测出T、C两种TGF-β1等位基因,存在TT型、TC型、CC型3种基因型。（2）TGF-β1基因-509C/T位点多态性在PNS患者和健康人群中的分布差异无统计学意义;等位基因频率在两组间差异也无统计学意义。（3） TID轻度组、重度组TGF-β1基因-509C/T位点的基因型频率和健康对照组比较,差异有统计学意义（均P < 0.01）。TID重度组患者的T等位基因频率和TT基因型频率明显高于TID轻度组和健康对照组（均P < 0.01）,而TID轻度组和健康对照组间差异无统计学意义。（4）TID重度、轻度组及健康对照组TGF-β1血清水平两两比较,差异均有统计学意义（均P < 0.05）。PNS组TT基因型患者血清TGF-β1水平高于CC和CT基因型患者,且与CC基因型间差异有统计学意义（P < 0.05）。 结论 TGF-β1基因－509C/T多态性与PNS的发病无关,但其T等位基因可能是PNS患者TID的重要遗传因素。血清TGF-β1水平升高和TID程度与TT基因型有关。     

亚甲基四氢叶酸还原酶基因多态性及同型半胱氨酸水平与冠心病关系的研究

目的：探讨亚甲基四氢叶酸还原酶（MTHFR）C677T基因多态性、血清同型半胱氨酸（Hcy）水平与冠心病发生的关系。方法：收集解放军总医院第一附属医院收治的冠心病患者172例和健康体检者（正常对照组）160例的空腹静脉血,应用基因芯片技术联合检测MTHFR基因C677T多态性位点,并比较冠心病患者和健康体检者的MTHFR基因型及不同MTHFR基因型冠心病患者中血清Hcy水平的变化。结果：①冠心病组与正常对照组MTHFR基因C677T分布频率分别为CC型20.3%比32.5%（P〈0.05）、CT型44.8%比43.1%（P〉0.05）和TT型34.9%比24.3%（P〈0.05）;②冠心病组血清Hcy水平与正常对照组水平之间存在明显差异（P〈0.05）;③冠心病的TT基因型组的Hcy水平明显高于CC基因型组和CT基因型组,差异具有统计学意义（P〈0.05）。结论：冠心病组MTHFR C677T基因TT型分布频率及Hcy水平均高于正常对照组,MFHFR基因C677T TT型与冠心病的发生有关。     

Influence of uridine diphosphate-glucuronosyltransferases (1A9) polymorphisms on mycophenolic acid pharmacokinetics in patients with renal transplant

Background: There are differences in pharmacokinetic of mycophenolic acid among individuals. The UGT1A9 enzyme is of special interest since it is the main enzyme involved in the glucuronidation of MPA. Single nucleotide polymorphisms in the UGT1A9 gene may be responsible for individual differences in the pharmacokinetics of MPA. The aim of this study was to explain MPA pharmacokinetics in UGT1A9 1399 C?>?T polymorphisms in Turkish renal transplant patients.

Patients and methods: One hundred and twenty-five living-donor transplant recipients and 100 healthy control subjects underwent UGT1A9 1399 C?>?T genotyping using polymerase chain reaction–restriction fragment length polymorphism. Concentrations of MPA were determined with Cloned Enzyme Donor Immunoassay (CEDIA). Besides that, all the patients were monitored for acute rejection and graft function during the study period.

Results: The UGT1A9 1399 C?>?T CC, CT, and TT genotype frequencies among patients were, respectively, 68.0%, 23.2%, and 8.8%. The CC, CT, and TT genotype frequencies among controls were, respectively, 63.0%, 23.0%, and 14.0%. There was no significant difference between patients and controls (p?=?.480, p?=?.999, p?=?.286, respectively). At first month, respectively, through blood concentrations of MPA were significantly higher in UGT1A9 1399 C?>?T TT carriers than in CT and CC carriers (p?=?.046). The doses for these patients were lower at first month (p?=?.021). Acute rejection episodes were not associated with the CC vs CT or TT genotypes (p?=?.064).

Conclusions: Our results demonstrated a correlation between the UGT1A9 1399 C?>?T polymorphism and MPA pharmacokinetics among renal transplant patients. Determination of UGT1A9 polymorphism may help to achieve target of MPA blood concentrations.