1667例汉族前列腺癌人群前列腺癌易感性基因多态性验证分析

目的:前列腺癌在工业化国家发病率居男性恶性肿瘤首位,在我国前列腺癌近年发病率不断上升,成为泌尿系统常见恶性肿瘤。本文通过前列腺癌基因多态性分析研究汉族人群前列腺癌易感性危险位点。方法:取1 667例前列腺癌患者与1 525例对照组外周血样双盲利用Sequenom技术进行40个前列腺癌危险位点的SNP分析。结果:40个公认的前列腺癌位点检测结果有16个位点与前列腺癌明显相关(P<0.05);同时发现在不同人种中位于8q24的1、2、5位点与10q11的MSMB编码区及22q13.2编码TTLL1/BIK区域共同决定前列腺癌易感性。结论:汉族前列腺癌人群前列腺癌基因多态性分析结果显示:rs1465618、rs721048、rs12621278、rs7679673、rs12653946、rs339331、rs1512268、rs10086908、rs16901979、rs1447295、rs10993994、rs10896449、rs902774、rs9600079、rs11649743、rs5759167与前列腺癌易感性明显相关。     

甲基化转移酶基因多态性与前列腺癌发病的相关性研究

目的:探讨DNA甲基转移酶1(DNA methyltransferase 1,DNMT1)(rs16999593,rs2228611)及DNMT3B(rs2424908)基因多态性与南京地区前列腺癌发病风险及病理特征的相关性。方法:采用病例对照研究,招募前列腺癌患者155例设为病例组及155例正常男性设为对照组。采用Mass ARRAY分子量阵列技术进行基因分型技术检测3个多态性位点的基因型。采用Logistic回归模型分析各基因型与前列腺癌发生的关系及其病理参数的关系。结果:rs16999593位点的各基因型在2组中分布频率有显著性差异(P=0.041),CT基因型(OR=0.61,95%CI 0.38~0.99,P=0.043)及CT/CC(OR=0.59,95%CI 0.39~0.92,P=0.017)基因型在对照组的频率显著高于病例组。rs2424908的各基因型在两组中分布有显著性差异(P=0.025),CT基因型(OR=0.73,95%CI 0.58~0.91,P=0.007)及CT/CC基因型(OR=0.57,95%CI 0.36~0.94,P=0.023)在对照组的频率显著高于病例组。在Gleason分级7的病例组中,rs16999593CT/CC(OR=0.47,95%CI 0.28~0.85,P=0.008)及rs2424908CT/CC(OR=0.46,95%CI 0.26~0.85,P=0.009)基因型的频率均显著低于对照组。而在Gleason分级≥7的分组中上述3个多态性位点的基因型频率与对照组均无显著性差异(P均0.05)。结论:DNMT1基因rs16999593CT/CC及DNMT3B基因rs2424908CT/CC基因型与前列腺癌的低风险相关,且与Gleason低评分相关。     

CYP1A2基因多态性与前列腺癌的相关性研究

目的:评价CYP1A2基因单核苷酸多态性(SNPs)与前列腺癌分期分级的相关性。方法:对253例良性前列腺增生(BPH)患者与206例去势前列腺癌患者CYP1A2基因中rs2069514-3859(A>G)位点及rs2069525-1707(C>T)位点进行基因测序,并对各基因表型与前列腺癌的分期分级相关性进行统计学分析。结果:BPH及去势前列腺癌患者的两种CYP1A2单核苷酸多态性的发生率无明显差异(P>0.05),其基因多态性与前列腺癌的病理分期均无相关性(P>0.05);但rs2069525-1707(C>T)中含C等位基因型的前列腺癌Gleason评分多在7分以下(P=0.030,OR=4.658,95%CI:1.222～17.754)。结论:CYP1A2基因的SNPs与前列腺癌的病理分级之间可能有一定的相关性,但其发生机制及临床意义有待进一步证实及研究。     

褪黑素受体1A基因多态性与青少年特发性脊柱侧凸相关性研究

目的研究褪黑素受体1A基因（MTNR1A）多态性与青少年特发性脊柱侧凸（AIS）发生发展的关系。方法共纳入226例AIS患者及277例正常对照者。记录AIS患者组最大Cobb角。采用PCR-RFLP的方法对MTNR1A基因启动子区域多态性位点rs2119882进行基因分型。结果AIS患者组MTNR1A基因多态性位点rs2119882的基因型及等位基因分布与正常对照组比较没有明显差异。在AIS组内,多态性位点rs2119882不同基因型所对应的最大Cobb角没有明显差异。结论MTNR1A基因rs2119882位点多态性与AIS的发生发展都没有关系。     

Caspase-3基因多态性与腰椎间盘突出症的关系

目的 探讨Caspase-3基因多态性与腰椎间盘突出症(lumbar disc herniation,LDH)的关系。方法 选择2021年1月～2022年7月在本院就诊的LDH患者137例作为研究组,选择同期在本院健康体检的受试者137例作为对照组。观察两组受试者Caspase-3基因中的三个SNP位点rs4647693、rs4647610和rs12108497单核苷酸多态性,观察研究组不同rs4647693、rs4647610和rs12108497基因型患者的临床资料差异。结果 研究组和对照组Caspase-3 rs4647693基因型观察值和期望值吻合度良好,符合H-W平衡定律(x²_研究组=3.153,P=0.076;x²_对照组=2.902,P=0.088)。两组受试者基因型和等位基因频率差异均存在统计学意义(P<0.05)。研究组和对照组Caspase-3 rs4647610基因型和期望值吻合度良好,符合H-W平衡定律(x²_对照组=2.058,...     

胰岛素降解酶基因单核苷酸多态性与前列腺癌的关系研究

目的研究胰岛素降解酶(IDE)基因单核苷酸多态性与前列腺癌之间的关系。方法运用TaqMan探针SNP分析法测定192例胰腺癌患者和258例正常对照IDE基因rs4646953和rs2251101两个位点基因型,并分析IDE基因多态性与前列腺癌的关系。结果病例组IDE基因rs4646953位点TT、CT以及CC3种基因型等位基因频率分别为85.4%、14.1%和0.5%;对照组3种基因型等位基因频率分别为88.4%、10.1%和1.6%。病例组rs2251101位点TT、CT以及CC3种基因型频率分别为81.8%、16.7%和1.6%;对照组3种基因型等位基因频率分别为73.6%、23.3%和3.1%。病例组IDE基因rs4646953位点的基因型分布与正常对照组比较未见统计学差异(P=0.348),rs2251101位点病例组CT和CC基因型低于正常对照组(P=0.039)。结论 IDE基因rs2251101位点变异与前列腺癌相关。     

GREB1基因多态性与老年骨质疏松性骨折的相关性研究

目的探讨北京人群乳腺癌雌激素调控基因1(GREB1)基因多态性与老年骨质疏松性骨折的相关性。方法本研究共纳入226例老年患者,分为骨折组(骨质疏松性骨折,n=100)、对照组(无骨质疏松、无骨折,n=126)。采用双能X线骨密度仪测量髋部和腰椎骨密度值。用Snapshot技术检测患者rs10929757、rs5020877位点多态性。比较两组总体及亚组在GREB1各位点的等位基因频率、基因型频率分布差异。比较GERB1各位点不同基因型患者的骨密度值差异。结果两组总体在GREB1基因rs10929757、rs5020877位点的基因频率和基因型频率分布均无明显差异(P0.05)。两组男性患者在rs10929757位点的C等位基因频率分别为骨折组36.5%、对照组52.2%,差异有统计学意义(P0.05);两组男性患者在rs5020877位点的基因频率和基因型频率分布均无明显差异(P0.05)。两组女性患者在rs10929757位点和rs5020877位点的基因频率和基因型频率分布无明显差异(P0.05)。在rs10929757位点,总体、男性和女性患者中不同基因型患者骨密度值比较无明显差异(P0.05)。在rs5020877位点,总体、男性和女性患者中不同基因型患者骨密度值比较无明显差异(P0.05)。结论 rs10929757位点多态性与老年男性椎体骨质疏松性骨折存在相关性;未发现rs5020877位点多态性与老年椎体骨质疏松性骨折相关。     

血管生成相关基因多态性与肾透明细胞癌的相关性研究

目的 探讨血管生成相关基因多态性与肾透明细胞癌发病风险的关系. 方法 选取2005年6月至2012年9月收治的859例经病理检查证实的肾透明细胞癌患者及1 004例健康对照人群,采集研究对象外周血,在7个与血管生成有关的基因中(HIF1A,EPAS1,VEGFA,VEGFR1,VEGFR2,VEGFR3和PDGFRB)筛选出24个候选单核苷酸多态性位点,采用单碱基微测序技术进行基因分型.应用Logistic回归模型调整混杂因素后,分析各基因型与肾透明细胞癌发生的关系.结果 24个SNP位点中19个对照组基因型均符合遗传平衡定律.VEGFA基因rs2010963位点,VEGFR1基因rs3812867位点,VEGFR3基因rs1382302、rs448012、rs 1049095位点等5个位点的多态性与肾透明细胞癌发生显著相关(P＜0.05).多重检验校正后,仅有VEGFA基因rs2010963位点和VEGFR3基因的rs448012位点与肾透明细胞癌发生存在相关性(P＜0.05).VEGFA基因rs2010963位点携带CC/GC基因型的患者较携带GG基因型患者的肾透明细胞癌发病率显著升高(FDR=0.048,OR=1.38,95％ CI:1.13 ～ 1.69),VEGFR3基因rs448012位点携带CC/GC基因型的患者肾透明细胞癌的发病率显著高于携带GG基因型的患者(FDR=0.045,OR=1.36,95％CI:1.12～1.66). 结论 VEGFA基因的rs2010963位点与VEGFR3基因的rs448012位点多态性与肾透明细胞癌发病相关.     

特发性脊柱侧凸患者二肽基肽酶9基因多态性研究

目的:探讨二肽基肽酶9(dipeptidyl-peptidase 9,DPP9)基因多态性与青少年特发性脊柱侧凸(adolescent idiopathic scoliosis,AIS)发生发展的关系.方法:选择571例AIS患者及236例正常对照,AIS患者的Cobb角均大于20°.结合汉族人单倍体型资料,选取rs10406145、rs11670570、rs2286367、rs2277733及rs732631 5个单核苷酸多态性(single nucleotide polymorphisms,SNPs)位点,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)的方法对这5个SNPs位点进行基因分型.结果:AIS患者组DPP9基因5个SNPs位点的基因型及等位基因分布与正常对照比较没有明显差异.在已经达到骨骼成熟或者已经接受手术治疗的患者中,这5个SNPs位点不同基因型所对应的最大Cobb角没有明显差异.结论:DPP9基因多态性与AIS的发生发展没有明显关系.     

青少年特发性脊柱侧凸生长激素基因多态性研究

目的 研究生长激素(GH)基因多态性与青少年特发性脊柱侧凸(AIS)发生发展的关系.方法 本研究包括265例AIS患者及193名正常对照.在AIS患者组,记录其最大Cobb角.采用PCR-RFLP的方法 对GH基因启动子区域多态性位点rs2854184进行基因分型.结果 在AIS患者组,GH基因rs2854184多态性位点的3个基因型AA、AT、TT分别占38.3%,50.3%,11.4%,正常对照组分别占39.6%,50.2%,10.10k,2组比较差异无统计学意义.同样,在MS患者组rs2854184多态性位点的2个等位基因A、T分别占63.5%,36.5%,正常对照组分别占64.7%,35.3%,2组比较差异无统计学意义.另外在AIS组内,多态性位点rs2854184不同基因型所对应最大Cobb角分别是从33.8°±10.0°,AT 36.4°±15.0°,TT34.5°±9.1°,3者比较差异无统计学意义.结论 GH基因rs2854184位点多态性与AIS的发生发展没有明显关系.     

The impact of polymorphism on prostate specific antigen gene on the risk, tumor volume and pathological stage of prostate cancer

PURPOSE: A single nucleotide polymorphism with adenine (A) to guanine (G) substitution is identified at position -158 in the androgen response elements region of the prostate specific antigen (PSA) gene. We evaluated the relationship between the PSA -158A/G polymorphism and the risk, tumor volume and pathological stage of prostate cancer. MATERIALS AND METHODS: Peripheral venous blood samples were obtained from 122 patients with prostate cancer and 84 controls with benign prostatic hyperplasia. The diagnosis, tumor volume and pathological stage of prostate cancer were all determined according to the pathological reports of transrectal ultrasound guided prostate biopsy, transurethral prostate resection and radical prostatectomy. The PSA -158A/G polymorphism was determined by polymerase chain reaction based restriction fragment length polymorphism methods. RESULTS: Patients with prostate cancer had significantly greater frequencies of the G allele (87.3% vs 77.4%) and GG genotype (78.7% vs 61.9%) than the control group (p = 0.008 and 0.028, respectively). The OR of GG to AG and AA was 2.27 (p = 0.008). In the prostate cancer group the GG genotype was also associated with larger tumor volume (2.34 vs 0.82 ml) and higher pathological stage (organ confined cancer 68.2% vs 31.8% and extracapsular extension 100% vs 0%) than the GA and AA genotypes (p = 0.013 and 0.036, respectively). CONCLUSIONS: The PSA -158A/G polymorphism is associated with prostate cancer. The G allele increases the risk of prostate cancer and the GG genotype is associated with larger tumor volume and higher pathological stage.     

胃癌患者CTLA－4启动子及外显子区域基因多态性的研究

目的：探讨细胞毒性T淋巴细胞相关抗原4（CTLA－4）基因外显子49位点及启动子1661位点单核苷酸多态性（SNP）、幽门螺杆菌（Hp）感染与青岛地区人群胃癌的发病率的关系。方法：采用聚合酶链反应－限制性片段长度多态分析（PCR－RFLP）检测来自青岛地区人群胃癌患者、萎缩性胃炎及对照组患者中位CTLA－4＋49A／G及－1661A／G基因多态性的分布,Hp检测采用病理学诊断。结果：1）胃癌组外显子49位AG及GG基因型频率显著高于对照组（P均〈0．05）,携带AG及GG基因型者罹患胃癌的风险分别增加至2．63倍及5．69倍。启动子1661位AG＋GG基因型频率显著高于对照组（P：0．01）,携带AG＋GG基因型的个体罹患胃癌的风险增加到2．63倍。2）CTLA－4＋49A／G：与AA／Hp阴性者相比,AG／Hp阴性、GG／Hp阴性、AG／Hp阳性及GG／Hp阳性人群罹患胃癌的风险都显著增加,其中GG／Hp阳性者增加至9．56倍（P=0．ooo）。3）CTLA－4－1661A／G：以AA基因型并Hp阴性者为对照,AG＋GG／Hp阴性、AA／Hp阳性、AG＋GG／Hp阳性个体罹患胃癌的风险增加,其中AG＋GG基因型并Hp阳性个体的患病风险显著增高,为对照组的4．04倍（P_0．008）。结论：CTAL－4＋49A／G及－1661A／G基因多态性与胃癌的遗传易感性相关。     

pre-miR-146a基因rs2910164位点单核苷酸多态性与胆管癌的关系

目的：探讨pre-miR-146a基因表达及其rs2910164位点多态性与胆管癌的关系。 方法：分别用基因直接测序与定量PCR方法检测70例胆管癌患者的胆管癌组织（胆管癌组）及 39例胆管非肿瘤性疾病患者的胆管组织（对照组）中pre-miR-146a基因rs2910164位点单核苷酸多态性与pre-miR-146a表达,分析不同基因型与pre-miR-146a表达量、胆管癌临床病理及其预后的关系。 结果：胆管癌组的pre-miR-146a基因型分布与对照组有明显差异,前者表现为GG和GC基因型比例明显高于CC基因型,且G等位基因频率明显高于C等位基因（均P<0.05）;对照组GG和GC基因型人群的pre-miR-146a表达量较CC基因型低,但差异无统计学意义（P>0.05）,胆管癌组织pre-miR-146a表达量明显低于对照组胆管组织（P<0.05）;Logistic多元回归分析显示GG和GC基因型可能是胆管癌的危险因素（P=0.052）,分层分析显示GG和GC基因型与胆管癌患者的临床分期和淋巴结转移有关（均P<0.05）;生存分析显示GG和GC基因型胆管癌患者的生存率低于CC基因型胆管癌患者,但差异无统计学意义（P=0.178）。 结论：pre-miR-146a基因rs2910164位点G等位基因频率升高可能是导致pre-miR-146a基因表达降低以及胆管癌发生发展的危险因素。

     

白细胞介素10基因多态性及幽门螺杆菌感染与胃癌的相关性研究

目的 探讨白细胞介素10(IL-10)启动子区1082位点的单核苷酸多态性(singlenucleotide polymorphisms,SNP)、不同类型幽门螺杆菌(Hp)感染与甘肃地区胃癌易感性之间的关系.方法 采用聚合酶链反应-限制性片段长度多态(PCR-RFLP)和PCR产物直接测序技术分别检测来自甘肃地区人群137例胃癌患者及与其配比的144例对照个体及131例胃癌癌前病变IL-10-1082A/G基因多态性;采用免疫印迹技术对Hp进行毒株分型.结果 ①对照人群IL-10-1082位点的AA、AG、GG 3种基因型分布频率分别为76.4%、22.2%和1.4%;Hp感染情况为Hp Ⅰ型16.0%、HpⅡ型31.9%、阴性52.1%.②癌前病变组IL-10-1082位点的AA、AG、GG 3种基因型分布频率分别为63.4%、32.8%和3.8%.AG+GG基因型携带频率高于正常对照组(P=0.018),携带IL-10-1082 AG+GG基因型个体癌前病变的发病风险增高到1.87倍.③胃癌组IL-10-1082位点的从、AG、GG 3种基因型分布频率分别为58.4%、35.8%和5.8%;胃癌组IL-10-1082 AG+GG基因型携带频率显著高于正常对照组(P=0.010),携带IL-10-1082 AG+GG基因型个体胃癌的发病风险增高到2.31倍.④以IL-10-1082从基因型并Hp免疫印迹阴性组为对照,AG+GG基因型并Hp免疫印迹阴性个体、AG+GG基因型并Hp感染个体、AG+GG基因型并Hp Ⅰ型感染个体胃癌患病风险增高,其中AG+GG基因型并Hp Ⅰ型感染个体的患病风险显著增高,为对照组的9.73倍.结论 IL-10-1082位点A/G多态性与胃癌的遗传易感性相关.     

miR-22启动子区域的遗传变异与HBV相关肝癌发病风险的关系

目的：探讨微小RNA 22（miR-22）启动子区域的遗传变异与中国人群乙型肝炎病毒（HBV）相关肝癌易感性的关系。方法：采用病例-对照方法,收集1 020例确诊的乙型肝炎病毒（HBV）阳性HCC患者（病例组）和1 046例健康对照个体（对照组）静脉血标本。用TaqMan等位基因分型方法对miR-22启动子区域多态位点rs6502892（C→T）和rs721576（A→G）进行基因型检测,结合研究对象的基本资料,应用Logistic回归法分析不同基因型与HBV相关肝癌发病风险的关系。结果：rs6502892的基因型分布在病例组与对照组间差异有统计学意义（P=0.018）,而rs721576的基因型的分布在两组间差异无统计学意义（P>0.05）。与rs6502892野生型（CC）比较,rs6502892突变基因型（CT/TT）的HBV相关肝癌的发病风险明显增加（调整后OR=1.23,95% CI=1.02~1.47,P=0.029）。进一步的分层分析表明,rs6502892突变基因型（CT/TT）的危险效应在52岁以下年龄组、女性、吸烟者和饮酒者中更明显（均P<0.05）;而rs721576突变基因型（AG/GG）在男性和非吸烟者中HBV相关肝癌的发病风险降低（均P<0.05）。结论：miR-22 rs6502892突变基因型（CT/TT）增加中国人群HBV相关肝癌的发病风险,而rs721576突变基因型（AG/GG）降低男性和非吸烟者患HBV相关肝癌的风险。这一结论有待进一步的关联研究以及功能学研究的证实。

     

白细胞介素10—1082基因多态性与胃癌遗传易感性的Meta分析

目的系统分析中国人群白细胞介素10—1052（IL-10—1082）基因多态性与胃癌遗传易感性的关系。方法采用Cochrane系统评价方法,检索1966年至2012年Medline、Embase、Cochrane Library、中国生物医学文献数据库（CBM）、中国期刊全文数据库（CJFD）和中国科技期刊全文数据库（CSJD）等数据库,收集IL-10—1052基因多态性与中国人群胃癌易感性的病例对照研究。将纳入研究的胃癌患者作为胃癌组,健康人群作为健康对照组。由2名研究者独立提取数据和进行文献质量评价,综合评价IL-10—1082位点基因型GG与AA、AG与AA及等位基因G与A在中国人胃癌组与健康对照组中是否有差异。采用Q检验和,2对异质性进行定量分析。采用固定或随机效应模型合并数据。计数资料采用优势比（OR）及95％可信区间（95％CI）表示。结果共纳入13篇文献,累计样本量5252例,其中胃癌组患者2077例,健康对照组人群3175例。Meta分析结果显示：携带IL．10—1082基因型GG与AG患者,其胃癌发生风险率高于与携带IL-10—1082基因型AA患者（OR=1．76,95％CI1．33～2．33;OR=2．05,95％CI1．62～2．66,P〈0．05）;IL-10—1082基因型具有等位基因G的患者其胃癌发生风险率高于含等位基因A的患者（OR=1．67,95％CI1．31～2．13,P〈0．05）。结论中国人群IL-10—1082基因型GG、AG及等位基因G与胃癌发生有关。     

前列腺癌患者CYP1A2 IVS4+43A/G基因型分析

目的:应用TaqMan荧光定量技术,了解前列腺癌患者CYP1A2 IVS4+43A/G位点基因表型。方法:应用ABI Prism7300型荧光定量PCR仪,通过序列检测系统测定85例前列腺癌患者CYP1A2 IVS4+43A/G的各种基因型,并分析不同基因型患者与前列腺癌分化之间的相关性。结果:85例前列腺癌患者中CYP1A2 IVS4+43A/G位点基因表型为AA5例(5.9%),AG33例(38.8%),GG47例(55.3%)。且各基因表型与前列腺癌Gleason评分无明显相关性。结论:CYP1A2 IVS4+43A/G各基因表型与前列腺癌分化之间无明显相关性。     

Association of receptor activator of nuclear factor-kappaB ligand (RANKL) gene polymorphisms with the susceptibility to ankylosing spondylitis: a case–control study

Objectives

To investigate the association between receptor activator of nuclear factor-kappaB ligand (RANKL) gene polymorphisms and the susceptibility to ankylosing spondylitis (AS) in a Chinese Han population.

Methods

Three hundred and fifty-two AS patients and 299 age- and gender-matched controls were recruited in this study. Peripheral blood samples were collected from all the subjects and the genomic DNA was then extracted. Three single nucleotide polymorphisms (SNPs) of the RANKL gene (rs2277438, rs7984870 and rs9533156) were genotyped using the TaqMan assay. The frequencies of alleles and genotypes were compared between AS patients and normal controls.

Results

The distributions of genotype frequencies in rs2277438 were significantly different between AS patients and normal controls (P < 0.05). The frequency of G allele of SNP rs2277438 in AS patients was significantly higher than that in normal controls (P < 0.05). The frequencies of genotypes with G allele (GG and AG) were significantly higher in AS patients when compared with normal controls (OR = 1.573, 95 % CI 1.151–2.150, P < 0.05). Neither the genotype frequencies nor the allele frequencies of rs7984870 and rs9533156 were found to be significantly different between AS patients and normal controls (P > 0.05).

Conclusions

The current study demonstrated that SNP rs2277438 of the RANKL gene was associated with the susceptibility of AS in a Chinese Han population. Genotypes with G allele (GG and AG) were identified as the risk factors for the occurrence of AS.     

An interleukin-10 promoter polymorphism may influence tumor development in renal cell carcinoma

PURPOSE: Polymorphisms in the promoter of the interleukin-10 (IL-10) gene may influence tumor development by altering the levels of IL-10 present in the serum or tumor microenvironment. In this study we looked for evidence of specific polymorphisms of the IL-10 promoter and whether lymphocyte expression of IL-10 correlates with specific genotypes. MATERIALS AND METHODS: Archival, paraffin embedded renal cell carcinoma tissue from 166 patients and 161 controls were genotyped for the IL-10-1082 single nucleotide polymorphism using real-time polymerase chain reaction. IL-10 protein expression in peripheral blood lymphocytes was assessed by standard enzyme-linked immunoassay in 32 patients with renal cancer. RESULTS: Patient-to-control comparisons identified the AA genotype to be significantly greater in patients with renal cell carcinoma (44% vs 30%, p <0.05). However, study of IL-10 protein expression in peripheral blood lymphocytes from patients with renal cancer showed no statistical difference in IL-10 expression among the GG, AA or AG genotypes. CONCLUSIONS: We found that there was a significantly larger proportion of patients with renal cell carcinoma with the AA homozygous genotype than in a normal population cohort. This result is in accordance with those in previous studies of prostate cancer and cutaneous malignant melanoma. In contrast to previous studies of other tumor types, no correlation could be established between IL-10-1082 polymorphism and serum IL-10.     

Prediction of initial dosage of tacrolimus in patients with idiopathic membranous nephropathy by testing CYP3A5 genetic polymorphisms

Objective To explore the effect of CYP3A5 gene polymorphisms on the whole blood trough concentration (C0) of tacrolimus (TAC) in patients with idiopathic membranous nephropathy to identify an economical and optimal initial dosage delivering the best curative effect with minimum drug adverse reaction. Methods Sixty patients with idiopathic membranous nephropathy were enrolled in this study. The CYP3A5 genotype was tested by fluorescence in situ hybridization (FISH). According to CYP3A5 genotype, the patients were divided into three groups (AA, AG, and GG). At the same time, theC0 of TAC was measured by enzyme multiplied immunoassay technique (EMIT).C0 of TAC, daily dosage of TAC and the concentration/dose(C0/D) ratio of TAC were detected after taking medicine at 8, 12, 16 and 24 weeks respectively, so as to corroborate the relation between CYP3A5 gene polymorphisms and the dosage of TAC. Results The oral TAC dosage had great variation among individuals. The occurrence of the CYP3A5 genetic polymorphisms (A6986G) designated as G was 53.33%. D andC0 were significantly different at 8, 12, 16 and 24 weeks respectively (all P＜0.05). To reach the sameC0, the patients with AA needed 2-3-fold dosage of TAC than GG; and those with AG needed 1-2-fold dosage of TAC than GG. After 24-week treatment, the effective rate of AA group was markedly lower than AG and GG (16.67% vs 81.25%, 16.67% vs 87.50%,all P＜0.001). Among CR, PR and NR, there were no significantly difference onC0 orC0/D of TAC (P＞0.05). Conclusions CYP3A5 genotypes are correlated with blood concentration of TAC. CYP3A5 genotyping may be a new approach to predict the optimal initial dosage of tacrolimus in idiopathic membranous nephropathy.