UGT1A1 基因多态性与转移性结直肠癌伊立替康化疗毒性及疗效的关系

目的: 探讨 UGT1A1 ^*28和 UGT1A1 ^*6基因多态性与伊立替康治疗转移性结直肠癌患者的不良反应和疗效之间的关系。方法: 外周血中抽提基因组DNA,采用PCR扩增目的基因片段,直接测序法分析2010年4月至2012年3月在我院做基因检测的207例消化道肿瘤患者 UGT1A1 ^*28和 UGT1A1 ^*6基因多态性的分布情况,并对其中56例采用含伊立替康方案化疗的转移性结直肠癌患者出现的不良反应情况、肿瘤进展时间及化疗疗效进行观察并记录,比较不同基因型患者之间的差异。结果: 207例消化道肿瘤患者中, UGT1A1 ^*28位点野生型TA6/6有164例(79.2%),杂合突变型TA6/7有41例(19.8%),纯合突变型TA7/7有2例(1.0%); UGT1A1 ^*6位点野生型G/G有154例(74.4%),杂合突变型G/A有51例(24.6%),纯合突变型A/A有2例(1.0%)。在56例转移性结直肠癌患者中,^*6位点突变型(G/A和A/A)可以增加发生3级以上腹泻(38.9% vs 7.9%,P<0.05)和中性粒细胞减少(61.1% vs 29.0%,P<0.05)的风险;^*28位点突变型(6/7和7/7)可以增加发生3级以上血小板减少(33.3% vs 2.1%,P<0.05)的风险;肿瘤进展时间和化疗疗效在^*28和^*6位点各基因型之间差异无统计学意义。结论: 在采用含伊立替康方案化疗的转移性结直肠癌患者中, UGT1A1 ^*6位点突变型增加发生3级以上腹泻和中性粒细胞减少的风险; UGT1A1 ^*28位点突变型增加发生3级以上血小板减少的风险。     

未结合型高胆红素血症患者UGT1A1基因的突变分析

目的 分析未结合型高胆红素血症患者尿苷二磷酸葡糖醛酸基转移酶1A1(uridine diphosphate glucuronosyltransferase 1A1,UGT1A1)基因的突变情况,并探讨突变与血清总胆红素的关系.方法 抽提患者外周血基因组DNA,扩增UGT1A1基因的编码序列及启动子区,对扩增产物进行测序以确定基因突变.结果 在61例未结合型高胆红素血症患者中,共发现46例存在UGT1A1基因的突变.突变可分为5种,依据频率高低依次为211G→A、TATAA盒TA插入、686C→A、1091C→T以及1352C→T.携带单一位点纯合突变合并其它位点杂合突变患者的血清胆红素水平明显高于单位点纯合突变或多位点杂合突变患者(P＜0.05).综合UGT1A1基因突变与血清总胆红素水平,44例未结合型高胆红素血症患者被诊断为Gilbert综合征,2例被诊断为Ⅱ型Crigler-Najjar综合征.结论 患者血清总胆红素水平不仅与UGT1A1基因突变数量有关,而且与突变的杂合或纯合状态有关.     

The use of sodium valproate, carbamazepine and oxcarbazepine in patients with affective disorders

During recent years alternatives to lithium prophylaxis have been developed using primary dipropylacetamide and, later on, sodium valproate, as a mono-therapy as well as in combination with low-dosage lithium treatment. It has been shown in a placebo-controlled ABA design that sodium valproate exerts an acute antimanic effect and a prophylactic action of sodium valproate has also been established. Carbamazepine represents another important contribution to the arsenal of drugs to be used as alternatives for the prophylactic treatment in patients not responding to lithium and/or experiencing too many side effects. The keto-derivative of carbamazepine, oxcarbazepine, has been shown to exert acute antimanic effects in a similar way to carbamazepine itself.     

Early modification of sickle cell disease clinical course by UDP-glucuronosyltransferase 1A1 gene promoter polymorphism

Elevated erythrocyte destruction in sickle cell disease (SCD) results in chronic hyperbilirubinaemia and, in a subset of patients, cholelithiasis occurs. We investigated whether the (TA)n promoter polymorphism in the UDP-glucuronosyltransferase 1A1 gene (UGT1A1) may modify bilirubin metabolism, influencing bilirubinaemia, predisposition to cholelithiasis and subsequent cholecystectomy, in a group of 153 young SCD patients (mean age 12.0 +/- 9.0 years) predominantly of Bantu beta S haplotype. The concomitant effect of alpha thalassaemia was also analysed. Among the several UGT1A1 genotypes found, the most frequent were the (TA)6/(TA)6 (n = 37), (TA)6/(TA)7 (n = 60) and (TA)7/(TA)7 (n = 29). These groups of patients did not significantly differ in age, gender ratio and haemoglobin, foetal haemoglobin and reticulocyte levels. On the other hand, total bilirubin levels were significantly different between groups, with an increased (TA) repeat number being associated with higher bilirubinaemia. Furthermore, both cholelithiasis and cholecystectomy were more frequent in groups with higher (TA) repeat number, although the former association was not statistically significant. None of the mentioned parameters is statistically different within UGT1A1 groups with the presence of alpha thalassaemia. Thus, the UGT1A1 promoter polymorphism may represent an important nonglobin genetic modifier of Bantu SCD patients' clinical manifestations, even at a young age.     

Distribution of selected gene polymorphisms of UGT1A1 in a Saudi population

Introduction

Glucuronidation is an important phase II pathway responsible for the metabolism of many endogenous substances and drugs to less toxic metabolites, which undergo renal excretion. The aim of the current work was to evaluate genotype and allele frequencies of certain UDP-glucuronosyltransferase 1A1 (UGT1A1) variants in an Arab population.

Material and methods

Genomic DNA was isolated from 192 healthy unrelated Saudi males of various geographic regions and genotyping of UGT1A1*6, *27, *36, *28, *37, and *60 was carried out using polymerase chain reaction (PCR) amplification followed by direct sequencing.

Results

The most common allele for (TA) repeats was the wild type (TA)6 with a frequency of 74.3% followed by the mutant (TA)7 (i.e., UGT1A1*28) with a frequency of 25.7%. The distribution of UGT1A1*60 allele was 62.4% among subjects with the homozygous mutant genotype of 35.4%, while the wild type variant represents 10.6% only. Both UGT1A1*6 and *27 were not detected as all screened subjects showed a homozygous wild type pattern. Similarly, UGT1A1*36* and *37 were either not present or rarely found, respectively. In comparison to other populations, the frequency of UGT1A1*60 and *28 in the studied population was less than that of African Americans but higher than Asians. The geographical origin of the study subjects also implied some differences in genotype distribution of (TA) repeats and UGT1A1*60.

Conclusions

Our data indicate that Saudis harbor some important UGT1A1 mutations known to affect enzyme activity. Additional studies are warranted to assess the clinical implications of these gene polymorphisms in this ethnic group.     

结直肠癌患者肠道UGT1A基因的多态性表达

目的：从mRNA水平及蛋白质水平分析结直肠粘膜UGT1A基因位点的多态性表达。 方法： 结直肠癌病例组40例，正常人肠道粘膜对照组20例。逆转录聚合酶链反应分析结直肠癌组、正常人群肠道粘膜UGT1A mRNA表达；免疫印迹法检测各组UGT1A蛋白的表达。 结果： (1)UGT1A mRNA量的差异表达：结直肠癌组织中UGT1A mRNA表达明显低于其周围正常粘膜，而后者低于正常人群肠粘膜组织的表达量，P<0.01。结直肠癌病例组、正常人群结直肠粘膜组织呈现个体差异表达。(2)结直肠粘膜组织UGT1A各同Ⅰ型的多态性表达：癌组织、癌周正常粘膜及在正常人群肠道粘膜中UGT1A各同Ⅰ型表达例数各不相同。UGT1A1、1A3、1A4、1A6、1A9 mRNA表达水平在癌组织表达低于周围正常粘膜，P<0.01；而UGT1A8、1A10在癌组织中mRNA表达量高于周围正常粘膜，P<0.01。(3)UGT1A蛋白的差异表达：其灰度值比值在癌组织显著低于周围正常组织，后者又显著低于正常人肠粘膜，P<0.01。各组蛋白表达的深浅度亦各不相同。 结论： (1)UGT1A基因位点的多态表达不仅存在于结直肠癌组织及周围的正常组织，亦存在于正常人群肠粘膜；(2)结直肠粘膜上皮UGT1A基因位点在转录水平及功能水平均存在着多态调节，不同个体对致癌物的易感性不同可能是这种差异表达的结果。     

丙戊酸钠对AML1-ETO转染细胞中CEBPA基因表达及表观遗传修饰的影响

目的:探讨丙戊酸钠(VPA)对AML1-ETO转染细胞中CCAAT/增强子结合蛋白α(CEBPA)基因表达的影响及诱导沉默基因重新表达的机制。方法:不同浓度VPA处理AML1-ETO转染的急性髓系白血病细胞U937后,CCK-8法和台盼蓝染色活细胞计数检测细胞增殖能力,流式细胞术检测细胞表面抗原,RT-qPCR检测CEBPA mRNA的表达,ChIP-qPCR检测组蛋白H3和H4的乙酰化状态。结果:VPA对U937及AML1-ETO转染细胞有明显的生长抑制作用,呈现浓度依赖性和时间依赖性,VPA诱导U937及AML1-ETO转染细胞CD11b和CD14表达升高,VPA明显上调CEBPA mRNA的表达水平,VPA处理组CEBPA基因启动子区核染色质的组蛋白H3和H4乙酰化水平升高(P0.05)。结论:VPA对U937及其AML1-ETO转染细胞均有生长抑制和促分化的作用。VPA可能通过特异性调节CEBPA基因组蛋白乙酰化水平,改变其表观遗传修饰特征,从而诱导CEBPA基因重新表达。     

Frequencies of UDP‐glucuronosyltransferase 1 (UGT1A1) gene promoter polymorphisms among distinct ethnic groups from Brazil

A polymorphism in the promoter region of the UDP‐glucuronosyltransferase 1 (UGT1A) gene is associated with Gilbert syndrome (GS), a benign form of mild unconjugated hyperbilirubinemia. We genotyped 157 individuals from Brazil, comprising 71 Caucasians, 54 African‐derived subjects, and 32 Parakanã Indians. Frequencies of the alelle (TA)₇ associated with GS found in this study were 0.324, 0.407, and 0.328, respectively. The genotype frequencies differed significantly between Caucasians and African‐derived individuals. The high frequencies of (TA)₇ polymorphism among the three groups confirm previous data that this polymorphism is very ancient and appears to be distributed throughout the world. © 2002 Wiley‐Liss, Inc.     

EMILIN1基因多态性与蒙古族原发性高血压相关性研究

Objective To explore the relationship between genetic polyrnorphisms of 3 single nucleotide polymorphisms (SNPs) in the elastin microfibril interfacer 1 (EMILIN1)gene and essential hypertension. Methods A case-control study was conducted in which 201 hypertensive patients and 202 healthy controls in Mongolian population were enrolled, and the genotypes of rs3754734, rs2011616 and rs2304682 loci were analyzed using polymerase chain reaction-restriction fragment length polyrnorphism (PCR-RFLP) and direct sequencing techniques. Results There were significant differences in the frequencies of alleles and genotypes for the rs2304682 between the hypertensives and normotensives in the population(P＜0. 05). The frequency of the G-G haplotype established by rs3754734 and rs2304682 was significantly higher in the hypertensive patients (P＜0. 05). The frequencies of alleles and genotypes for the rs2304682 also had significant differences between the group with high diastolic blood pressure and normal diastolic blood pressure (P＜0.05). There were no significant differences in the frequencies of alleles and genotypes for the 3 SNPs between the group with high systolic blood pressure and normal systolic blood pressure (P＞0.05). Conclusion The rs2304682 locus in the EMILIN1 gene, as well as the haplotypes G-G constructed using rs3754734 and rs2304682, may associate with the susceptibility of essential hypertension in the Mongolian population. Also, rs2304682 may associate with the level of the diastolic blood pressure.     

EMILIN1基因多态性与蒙古族原发性高血压相关性研究

Objective To explore the relationship between genetic polyrnorphisms of 3 single nucleotide polymorphisms (SNPs) in the elastin microfibril interfacer 1 (EMILIN1)gene and essential hypertension. Methods A case-control study was conducted in which 201 hypertensive patients and 202 healthy controls in Mongolian population were enrolled, and the genotypes of rs3754734, rs2011616 and rs2304682 loci were analyzed using polymerase chain reaction-restriction fragment length polyrnorphism (PCR-RFLP) and direct sequencing techniques. Results There were significant differences in the frequencies of alleles and genotypes for the rs2304682 between the hypertensives and normotensives in the population(P＜0. 05). The frequency of the G-G haplotype established by rs3754734 and rs2304682 was significantly higher in the hypertensive patients (P＜0. 05). The frequencies of alleles and genotypes for the rs2304682 also had significant differences between the group with high diastolic blood pressure and normal diastolic blood pressure (P＜0.05). There were no significant differences in the frequencies of alleles and genotypes for the 3 SNPs between the group with high systolic blood pressure and normal systolic blood pressure (P＞0.05). Conclusion The rs2304682 locus in the EMILIN1 gene, as well as the haplotypes G-G constructed using rs3754734 and rs2304682, may associate with the susceptibility of essential hypertension in the Mongolian population. Also, rs2304682 may associate with the level of the diastolic blood pressure.     

IL-6基因多态性与变应性鼻炎的关联性

目的探讨白细胞介素6(IL-6)基因启动子区-634C/G和-572C/G位点多态性与变应性鼻炎的关联性。方法应用聚合酶链反应-限制性片段长度多态性法(PCR-RFLP)检测105例PHC患者和130例健康对照者IL-6基因启动子区-634和-572位点多态性。结果 IL-6基因-634C/G多态性在变应性鼻炎组和对照组的分布差异不显著性(P0.05),而IL-6基因-572C/G多态性在两组人群中的分布差异显著(P0.05)。等位基因频率的相对风险分析发现,G等位基因携带者患冠心病的风险是C等位基因的1.849倍[相对比值比(OR)=1.849,95%可信区间(CI):1.187～2.879]。结论 IL-6-572基因多态性与变应性鼻炎的发病有相关性,G等位基因可能是变应性鼻炎的遗传易感基因。     

腺苷A1受体基因与精神分裂症的遗传关联分析

目的探讨腺苷A1受体基因(ADORA1)多态性与精神分裂症关联的关系。方法选取ADORA1基因上rs3766558位点采用聚合酶链式反应—限制性片段长度多态性(PCR-RFLP)方法对119例精神分裂症病例,包括88例正常对照组ADORA1基因分型进行检测和进行遗传关联分析。结果病例组和正常对照组基因型分布符合Hard-Weinberg平衡法则,rs3766558单倍型相对风险分析,结果为χ2=6.301,P=0.026和χ2=4.771,P=0.029。差异到达显著(P<0.05)。结论漳州地区人群ADORA1基因rs3766558与精神分裂症存在关联。     

CYP1A1基因I462V多态与非小细胞肺癌的相关性

目的 探讨CYP1A1基因1462V多态性与非小细胞肺癌的相关性.方法 采用病例对照研究,应用聚合酶链反应-限制性片段长度多态性对72例非小细胞肺癌患者(病例组)和90例正常对照(对照组)CYP1A1基因I462V多态进行检测,分析基因型频率和等位基因频率在病例组和对照组的分布,比较不同基因型与非小细胞肺癌患病风险的关...     

Association of GSTP1 and XRCC1 gene polymorphisms with clinical outcome of advanced non-small cell lung cancer patients with cisplatin-based chemotherapy

We investigated the association between the clinical outcome and GSTP1 and XRCC1 gene polymorphisms in advanced NSCLC patients with cisplatin-based chemotherapy. We prospectively recruited 325 NSCLC patients between January 2010 and January 2014. Genotypes of GSTP1 A313G, XRCC1 Arg194Trp, Arg280His and Arg399Gln were conducted using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) assay. AG and GG genotypes of GSTP1 A313G were correlated with a higher CR + PR when compared with AA genotype. Furthermore, GA and AA genotypes of XRCC1 Arg399Gln were associated with more CR + PR when compared with GG genotype. In the Cox proportional hazards model, GG genotype of GSTP1 A313G was significantly correlated with a longer median survival time when compared with AA genotype, and it is associated with a heavy decreased risk of death from NSCLC. Moreover, GA and AA genotypes of XRCC1 Arg399Gln had a significantly longer median survival time, and GA and AA genotypes were significantly associated with a moderate reduced risk of death from NSCLC. GSTP1 A313G and XRCC1 Arg399Gln gene polymorphisms might influence the response to cisplatin-based chemotherapy and affect the clinical outcome of advanced NSCLC.     

EMILIN1基因多态性与蒙古族原发性高血压相关性研究

目的 探讨蒙古族人群中EMILIN1基因的3个单核苷酸多态性(single nucleotide polymorphism,SNP)位点与原发性高血压的关系.方法 在内蒙古自治区蒙古族人群中选取201例原发性高血压患者和202名血压正常者进行病例对照研究,应用聚合酶链反应-限制性片段长度多态方法检测rs3754734、rs2011616和rs2304682这3个SNP位点的等位基因和基因型分布,并构建单倍型.结果 在这3个SNP位点中,rs2304682位点的基因频率和基因型频率在高血压组和对照组间差异有统计学意义(P＜0.05),并且在rs3754734和rs2304682这2个SNP位点构建的单倍型中,G-C和G-G单倍型在高血压组和对照组之间差异有统计学意义(P＜0.05).在舒张压偏高组和舒张压正常组间,rs2304682位点的基因型和等位基因分布差异有统计学意义(P＜0.05),而在收缩压偏高组和收缩压正常组间,各个SNP的基因型和等位基因分布差异无统计学意义(P＞0.05).结论 在蒙古族人群中,EMILIN1基因rs2304682多态性位点以及rs3754734和rs2304682这2个SNP位点构建的G-G单倍型可能与原发性高血压的易感相关联,rs2304682的多态性与蒙古族原发性高血压的舒张压的高低可能有关联.

Abstract：

Objective To explore the relationship between genetic polyrnorphisms of 3 single nucleotide polymorphisms (SNPs) in the elastin microfibril interfacer 1 (EMILIN1)gene and essential hypertension. Methods A case-control study was conducted in which 201 hypertensive patients and 202 healthy controls in Mongolian population were enrolled, and the genotypes of rs3754734, rs2011616 and rs2304682 loci were analyzed using polymerase chain reaction-restriction fragment length polyrnorphism (PCR-RFLP) and direct sequencing techniques. Results There were significant differences in the frequencies of alleles and genotypes for the rs2304682 between the hypertensives and normotensives in the population(P＜0. 05). The frequency of the G-G haplotype established by rs3754734 and rs2304682 was significantly higher in the hypertensive patients (P＜0. 05). The frequencies of alleles and genotypes for the rs2304682 also had significant differences between the group with high diastolic blood pressure and normal diastolic blood pressure (P＜0.05). There were no significant differences in the frequencies of alleles and genotypes for the 3 SNPs between the group with high systolic blood pressure and normal systolic blood pressure (P＞0.05). Conclusion The rs2304682 locus in the EMILIN1 gene, as well as the haplotypes G-G constructed using rs3754734 and rs2304682, may associate with the susceptibility of essential hypertension in the Mongolian population. Also, rs2304682 may associate with the level of the diastolic blood pressure.     

Effect of HIF1A gene polymorphism on human muscle performance

Allele distribution of hypoxia-inducible factor gene (HIF1A; Pro582Ser polymorphism) was studied in power-oriented athletes and controls practicing no athletics; genotype relationships with muscle fiber composition were studied in speed skaters. Genotyping was carried out by PCR. The composition of muscle fibers was evaluated by the immunohistochemical analysis of m. vastus lateralis. The incidence of HIF1A Ser allele was significantly higher in weight-lifters than in controls (17.9 vs. 8.5%; p=0.001) and increased with athletic skill improvement. A relationship between HIF1A Ser allele and predominance of fast-twitch muscle fibers was shown (Pro/Ser 46.2 (13.8)%, Pro/Pro 31.4 (8.2)%; p=0.007). Hence, HIF1A Pro582Ser polymorphism is associated with muscle activity in humans. Translated from Byulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 146, No. 9, pp. 327–329, September, 2008     

Association of polymorphisms in four bilirubin metabolism genes with serum bilirubin in three Asian populations

Numerous studies have shown that the (TA)n repeat polymorphism in the uridine diphosphate glycosyltransferase 1 (UGT1A1) gene promoter is associated with hyperbilirubinemia. Several studies also indicated that single nucleotide polymorphism (SNP) rs4148323:G>A at Exon 1 of UGT1A1 is associated with hyperbilirubinemia. However, it remains unclear what role the polymorphisms play in influencing serum total bilirubin (TBIL) levels in general populations, and whether polymorphisms in other genes involved in the bilirubin metabolism pathway are associated with TBIL levels. The present study addressed these questions by investigating the association of four bilirubin metabolism genes with TBIL levels in three Asian populations: 11 genetic polymorphisms in heme oxygenase‐1 (HMOX1); biliverdin reductase A (BLVRA); solute carrier organic anion transporter family member 1B1 (SLCO1B1); and UGT1A1. The populations consisted of 502 Kazak herdsmen, 769 Uyghur farmers, and 789 Han farmers, with distinct genetic backgrounds. UGT1A1 was found to be associated with the (TA)₇ allele of the (TA)n repeat polymorphism. We also showed that the A allele of SNP rs4148323:G>A was strongly associated with high TBIL levels in all three populations (each P<0.005). Among polymorphisms in other genes, only the (GT)n repeat polymorphism in the HMOX1 promoter region showed association with TBIL levels in the Uyghur population, but not in the Han and Kazak populations. We also assessed the contributions of (TA)n polymorphism and rs4148323:G>A to phenotypic variations in all three populations. Finally, we observed that significant differences of TBIL levels existed among the three populations; however, this could not be completely explained by the differences at the (TA)n repeat polymorphism and SNP rs4148323:G>A. Hum Mutat 0, 1–7, 2009. © 2009 Wiley‐Liss, Inc.     

中国人内源性高甘油三酯血症患者ATP结合盒转运子A1基因R219K多态性研究

目的研究ATP结合盒转运子A1(ATP binding cassette A1,ABCA1)基因R219K多态性是否与中国人内源性高甘油三酯血症(hypertriglyceridemia,HTG)有关联,为探讨本病的分子遗传基础提供依据。方法应用聚合酶链反应-限制性片段长度多态性分析法,对成都地区309名汉族人(200名正常人和109例内源性高甘油三酯血症患者)ABCA1基因R219K多态性位点进行分析。结果中国人ABCA1基因R219K多态位点K等位基因频率在对照组和HTG组分别为0.472与0.436;HTG组和对照组R219K位点之间基因型和等位基因的频率差异无统计学意义。对照组和HTG组KK基因型携带者血清高密度脂蛋白胆固醇(high density lipoprotein-cholesterol,HDL-C)水平均较相应组RR基因型携带者显著升高[(1.48±0.45)mmol/Lvs(1.27±0.29)mmol/L,P<0.05;(1.07±0.30)mmol/Lvs(0.87±0.19)mmol/L,P<0.05];对照组RK型携带者血清甘油三酯水平较RR型携带者显著降低[(1.22±0.37)mmol/Lvs(1.41±0.84)mmol/L,P<0.05],HTG组血清甘油三酯在RR、RK、KK型之间有逐渐降低的趋势[(3.82±2.02)mmol/Lvs(3.42±1.67)mmol/Lvs(3.33±1.43)mmol/L,P>0.05];HTG组K等位基因携带者(RK或KK型者)总胆固醇(totalcholesterol,TC)/HDL-C比值均较RR型携带者显著降低(KKvsRKvsRR4.82±1.28vs5.42±1.62vs6.33±1.70,P<0.05)。结论ABCA1基因R219K多态性不仅与中国成都地区正常汉族人血清HDL-C、甘油三酯含量有关,而且还与内源性高甘油三酯血症患者血清HDL-C水平、TC/HDL-C比值相关联。     

Association of monocyte chemoattractant protein 1 (MCP-1) gene polymorphism with lupus nephritis in Egyptian patients

Background and study aimMonocyte chemoattractant protein-1 (MCP-1) is a member of CC chemokine that plays an important role in the recruitment of monocytes/macrophages into renal tubulointerstitium. A biallelic A/G polymorphism at position ∼2518 in the MCP-1 gene was found to regulate MCP-1 expression. MCP-1 and its A/G gene polymorphism have been implicated in the pathogenesis of some renal diseases. The aim of the study was to investigate the role of the MCP-1 gene polymorphism as early predictors of the development of glomerulonephropathy in SLE patients. We also aimed to measure the serum and urinary levels of MCP-1 in patients with SLE, to find out its relation to clinical disease activity.Methods140 SLE patients (100 with nephritis and 40 without nephritis) and 80 controls were included in this study. MCP-1 gene polymorphism was analyzed by polymerase chain reaction. Serum and urine MCP-1 level were measured using high-sensitivity enzyme-linked immunosorbent assay.ResultsThe A/A genotype was more common in controls than in SLE patients, whereas both the A/G (P < 0.000) and G/G (P < 0.000) genotypes were more frequent in SLE patients. Carriers of G allele of the MCP-1 ∼2518 polymorphism had more than 7 fold increased risk to develop glomerulo-nephropathy in patients with SLE. High MCP-1 circulating levels production from patients with A/G and G/G genotypes was significantly higher than in A/A genotype. In addition there were significant differences in the mean levels of serum MCP-1 (P < 0.001) and urinary MCP-1 (P < 0.001) between patients and controls.ConclusionThe present study provides a new evidence that the presence of MCP-1 A (-2518) G gene polymorphism and high circulating MCP-1 levels can play an important role in the development of SLE and nephropathy in Egyptians.     

Association of allograft inflammatory factor-1 gene polymorphism with rheumatoid arthritis

Human allograft inflammatory factor-1 (AIF-1) is a cytoplasmic protein primarily identified in human and rat allografts, and data from several studies suggest an important role for AIF-1 in inflammatory processes. The aim of this study was to examine the association between AIF1 rs2269475:C>T polymorphism and rheumatoid arthritis (RA). AIF1 genotype was determined by means of the polymerase chain reaction-restriction fragment length polymorphism method in 276 White patients with RA and 236 healthy subjects. The frequency of the AIF1 rs2269475 TT genotype was significantly higher in the patients with RA than in the controls (OR=5.59, 95% CI: 1.22-25.55). The frequency of T allele carriers in the patient group with RA was 31.9% vs 19.1% among controls (P=0.0003). Moreover, the frequency of individuals positive for anti-cyclic citrullinated peptide (anti-CCP) antibodies was significantly elevated in the T allele carriers (OR=8.82, 95% CI: 2.06-37.7). It is noteworthy that no significant linkage disequilibria between the AIF1 C/T and DRB1 alleles associated with RA development and anti-CCP antibody production [including the most frequent, i.e. *04 (32.7%) and *01 (23.5%)] (P>0.1) were found. Our results show that the AIF1 rs2269475 T allele is associated with increased risk of RA development. Moreover, the frequency of individuals positive for anti-CCP antibodies is significantly increased among T allele carriers.