SLC34A2基因与肺泡微结石症

肺泡微结石症是一种很早就被认识、病程进展缓慢的罕见疾病,以肺泡内广泛的磷酸钙盐沉积为特征.其病因长期未能得到明确,新近发现该病为SCL34A2基因突变所引起的常染色体隐性遗传疾病.现就SLC34A2基因与肺泡微结石症进行综述,为该领域的深入研究提供参考.     

糖尿病SLC30A8蛋白及其相互作用蛋白初步分析

目的分析SLC30A8蛋白功能并构建与SLC30A8蛋白相互作用的11种蛋白的相互作用网络,为新药靶位点的发现和药物设计提供理论基础。方法利用NCBI数据库和蛋白质相互作用数据库搜集与SLC30A8相互作用的蛋白质,利用ProtParam软件、HPRD、GO数据库和STRING数据库分别对它们的功能、物化属性、亚细胞定位进行鉴定并构建蛋白的相互作用网络。结果鉴定了11种蛋白的功能、物化属性、亚细胞定位并构建了11种蛋白的相互作用网络,对所构建的SLC30A8相关蛋白质相互作用网络进行了分析。结论①SLC30A8促进锌从细胞质进入细胞内,维持细胞内锌离子的平衡;②与SLC30A8有直接相互作用的蛋白主要为膜转运蛋白、转录因子、酶、整合膜蛋白、RNA结合蛋白、生长因子。     

SLC52A3基因多态性与鼻咽癌易感性的关系

目的探讨核黄素转运蛋白SLC52A3基因单核苷酸多态性(SNPs)与鼻咽癌易感性的关系。方法采用Haploview软件从国际人类基因组单体型图计划(Hap Map)公布的北京汉族人群基因型数据库中筛选出SLC52A3基因3个标签SNPs(rs13042395、rs3746803及rs3746804),收集147例鼻咽癌患者外周血标本并采用直接测序法进行基因分型,选取159例健康体检者的外周血作对比,采用Hardy-Weinberg平衡分析3个SNPs位点的遗传平衡情况,比较鼻咽癌患者与健康对照rs13042395、rs3746803及rs3746804基因型和等位基因的分布差异并计算比值比(OR)及其95%置信区间(CI)来评价以上SNPs与鼻咽癌易感性的关系,同时分析SLC52A3 SNPs与常见临床病理参数的关系。结果 147例鼻咽癌患者rs13042395、rs3746803及rs3746804基因型和等位基因的分布符合Hardy-Weinberg平衡。疾病组与对照组rs13042395基因型分布的差异无统计学意义(P>0.05),但疾病组等位基因C的比例高于对照组(P<0.05),其中以CC基因型为参照,TT及CT+TT基因型发生鼻咽癌的风险降低至0.522、0.575倍(P<0.05),T相对于C等位基因发生鼻咽癌的风险降低至0.719倍(P<0.05)。rs3746804分布上,疾病组TT基因型及等位基因T的比例均低于对照组,差异有统计学意义(P<0.05),其中以CC基因型为参照,CT、TT及CT+TT基因型发生鼻咽癌的风险降低至0.501、0.400和0.466倍(P<0.05);以C等位基因为参照,T发生鼻咽癌的风险降低至0.588倍(P<0.05)。rs3746803基因型及等位基因分布与鼻咽癌易感性无关。结论SLC52A3 rs13042395、rs3746804与鼻咽癌易感性及临床分期有关,其中携带等位基因T的鼻咽癌发生风险降低,在鼻咽癌早期筛查中有一定价值。     

血友病A内含子22倒位的初步研究

目的：初步研究血友病A（HA）内含子22倒位，并用其进行携者诊断。方法：对22例HA进行凝血因子Ⅷ活性（FⅧ：C）检测，vWF:Ag测定后，对重型患者做内含子22倒位分析，并对其中一患者行家系调查。结果：22例HA中12例重型，8例中型，2例轻型；12例重型中6例为内含子22倒位，占50％，用该基因信息为一家系2名女性进行了检测均为携带者。结论：内含子22倒位是重型HA的主要基因缺陷，可用该基因缺陷直接进行携带者检测。     

SLC2A9基因第八外显子137A/G多态性变化与糖尿病合并高尿酸血症易感性的关系

目的 探讨SLC2A9基因第八外显子137A/G多态性与糖尿病合并高尿酸血症的关系.方法 纳入2009至2010年在青岛医学院附属医院门诊和病房的患者312例,其中糖尿病患者103例（男59例,女44例）、高尿酸血症患者105例（男86例,女19例）、糖尿病合并高尿酸血症患者104例（男63例,女41例）,另选健康志愿者102名（男45名,女57名）.采用聚合酶链反应-限制性片段长度多态性技术进行多态性检测.结果 137A/G位点最小等位基因频率为37.9％.137A/G位点多态性与高尿酸血症、糖尿病合并高尿酸血症发病相关（x2 =4.075、4.392,均P＜0.05）,与单纯糖尿病无关（x2 =0.942,P＞0.05）.校正性别、年龄因素后,logistic回归分析表明携带G等位基因的个体患高尿酸血症、糖尿病合并高尿酸血症的风险比携带A等位基因的个体高（OR=1.523、1.632,均P＜0.05）,差异有统计学意义;与单纯糖尿病的发病风险无统计学意义（OR=1.121,P＞0.05）.结论 SLC2A9基因第八外显子137A/G多态性与高尿酸血症、糖尿病合并高尿酸血症的发病密切相关,而与单纯糖尿病无关.     

SLC30 A8基因rs13266634多态性与甘肃汉族、回族2型糖尿病的相关性

目的探讨SLC30A8基因rs13266634单核苷酸多态性(SNP)在甘肃汉族、回族人群中的分布及其与2型糖尿病(T2DM)的关系。方法应用聚合酶链反应-限制性片段长度多态性(PCR-RFLP)方法检测汉族和回族T2DM组和对照组SLC30A8基因的基因型,同时进行人体测量学及临床指标的检测,分别采用稳态模型评估胰岛素抵抗指数(HOMA-IR)和胰岛!细胞分泌功能指数(HOMA-!)评估胰岛素抵抗(IR)和胰岛!细胞功能。结果 SLC30A8基因的基因型CC、CT和TT频率在汉族、回族T2DM组和对照组之间比较有差异(P均0.05);等位基因C、T频率在汉族、回族T2DM组和对照组之间比较亦有差异(P均0.05)。汉族C等位基因患T2DM的风险是T等位基因的1.54倍(OR=1.54,95%CI 1.09~2.16);回族C等位基因患T2DM的风险是T等位基因的1.56倍(OR=1.56,95%CI 1.09~2.22)。结论 SLC30A8基因rs13266634多态性与甘肃汉族、回族T2DM的发病相关,C等位基因可能是T2DM发病的易感基因之一。     

血氨基酸异常婴儿肝内胆汁淤积症患者SLC25A13基因的突变谱

目的 探讨血氨基酸异常婴儿肝内胆汁淤积症中是否存在SLC25A13基因突变及其突变谱特征.方法 对2003年6月-2007年6月就诊于复旦大学附属儿科医院的不明原因婴儿肝内胆汁淤积症患儿进行血氨基酸质谱分析,将检测有瓜氨酸、蛋氨酸至少一项2倍以上升高者共14例进行基因研究.全部入选对象先行SLC25A13基因的12种突变位点([Ⅰ]851de14、[Ⅱ]IVS11+1G>A、[Ⅲ]1638ins23、[Ⅳ]S225X、[Ⅴ]IVS13+1G>A、[Ⅵ]1800insl、[Ⅶ]R605X、[Ⅷ]E601X、[Ⅸ]E601K、[Ⅹ]IVS6+5G>A、[Ⅺ]R184X及[ⅪⅤ]IVS6+1G>C)的检测.对仅检出单个位点突变的研究对象,继续进行所有外显子区及其邻近序列分析.结果 检出SLC25A13基因突变8例,包括复合杂合突变851de14/1638ins23 2例,纯合突变851de14/851de14、复合杂合突变851de14/R184X及纯合突变IVS6+1G>A/IVS6+1G>各1例,杂合突变851de14 3例,其中纯合突变IVS6+1G>A/IVS6+1G>A是一种新型突变.结论 血氨基酸异常婴儿肝内胆汁淤积症中存在SLC25A13基因突变.[Ⅰ]851de14、[Ⅲ]1638ins23是中国SLC25A13基因的常见突变形式,新发现1例纯合突变IVS6+1G>A/IVS6+1G>A,和国外报道突变谱存在明显区别.     

中国男性痛风患者SLC2A9基因单核苷酸多态性与尿酸水平的关系

目的 SLC2A9是新近发现的尿酸转运子,该基因单核苷酸多态性可影响血清尿酸水平。本研究检测SLC2A9基因第6内含子rs7442295多态性在中国男性痛风和原发性高尿酸血症患者中的分布情况以及与尿酸代谢指标的相关性。方法 选取268例原发性痛风患者和288名健康志愿者,分别检测血压、体质量指数、血尿酸、血糖、血脂、肾功能水平,并同时提取外周血DNA,运用高分辨率熔解曲线(HRM)分析rs7442295基因型,并用测序法证实。统计学方法采用x2检验及t检验。结果 运用HRM技术能准确区分rs7442295 A/A和A/G基因型,而G/G基因型则在本研究人群中未发现。A/A和A/G基因型在人群分布频率分别是96.2％和3.8％。与健康对照组相比,痛风组的A/A和A/G基因型频率及A、G等位基因频率分布差异无统计学意义(x2=0.003,P=0.82; x2=0.003,P=1.00),但携带A/G基因型个体的尿酸水平[(293±100) μmol/L]明显低于携带A/A基因型的个体[(392±133) μmol/L]（t=2.426,P＜0.01）,且正常尿酸组内A/G基因型频率明显高于高尿酸组(x2=6.279,P=0.01）,基于HRM技术的基因分型结果与测序法所得结果完全一致。结论 SLC2A9基因rs7442295多态性可能是评估中国汉族男性人群原发性高尿酸血症危险性的一个遗传学标志,HRM技术简单、方便、快速,并实现闭管检测,非常适合单核苷酸多态性分析。     

NOD2／CARD15 gene polymorphism in patients with inflammatory bowel disease： Is Hungary different？

AIM: To analyse the impact of NOD2/CARD15 mutations on the clinical course of Crohn 's disease patients from an eastern European country (Hungary). METHODS: We investigated the prevalence of the three common NOD2/CARD15 mutations (Arg702Trp, Gly908Arg, 1007finsC) in 148 patients with Crohn's disease, 128 patients with ulcerative colitis and 208 controls recruited from the University of Szeged, Hungary. In patients with Crohn 's disease, the prevalence of NOD2/CARD15 mutations was correlated to the demographical and clinical parameters. RESULTS: In total, 32.4% of Crohn's disease patients carried at least one mutant allele within NOD2/CARD15 compared to 13.2% of patients with ulcerative colitis (P = 0.0002) and to 11.5% of controls (P相似文献   

Clinical significance of NOD2/CARD15 and Toll-like receptor 4 gene single nucleotide polymorphisms in inflammatory bowel disease

AIM： To evaluate the role of genetic factors in the pathogenesis of Crohn＇s disease （CD） and ulcerative colitis （UC）, we investigated the single nucleotide polymorphisms （SNPs） of NOD2/CARD15 （R702W, Gg08R and L1007finsC）, and Toll-like receptor 4 （TLR4） genes （D299G and T399I） in a selected inflammatory bowel disease （IBD） population coming from Southern Italy. METHODS： Allele and genotype frequencies of NOD2/ CARD15 （R702W, Gg08R and L1007finsC） and TLR4 （D299G and T399I） SNPs were examined in 133 CD patients, in 45 UC patients, and in 103 healthy controls. A genotype-phenotype correlation was performed. RESULTS： NOD2/CARD15 R702W mutation was significantly more frequent in CD （9.8%） than in controls （2.4%, P = 0.001） and in UC （2.3%, P = 0.03）. No significant difference was found between UC patients and control group （P 〉 0.05）. In CD and UC patients, no significant association with G908R variant was found. L1007finsC SNP showed an association with CD （9.8%） compared with controls （2.9%, P = 0.002） and UC patients （2.3%, P = 0.01）. Moreover, in CD patients, G908R and L1007finsC mutations were significantly associated with different phenotypes compared to CD wild-type patients. No association of IBD with the TLR4 SNPs was found in either cohort （allele frequencies： D299G-controls 3.9%, CD 3.7%, UC 3.4%, P 〉 0.05; T399I-controls 2.9%, CD 3.0%, UC 3.4%, P 〉 0.05）. CONCLUSION： These findings confirm that, in our IBD patients selected from Southern Italy, the NOD2/ CARD15, but not TLR4 SNPs, are associated with increased risk of CD.     

Genotype-phenotype analysis in childhood-onset Crohn's disease: NOD2/CARD15 variants consistently predict phenotypic characteristics of severe disease

INTRODUCTION: The incidence of early-onset CD in Scotland is among the highest worldwide. Three single nucleotide polymorphisms (SNPs) R702W, G908R and Leu1007finsC in the NOD2/CARD15 gene predispose to adult CD. We investigated the contribution of these variants to disease susceptibility and phenotype in the Scottish early-onset IBD population. PATIENTS AND METHODS: 906 individuals including 247 Scottish IBD patients aged <16 years at diagnosis, 414 parents and 245 controls were genotyped. Transmission disequilibrium testing (TDT), case-control analysis and detailed genotype-phenotype analysis were performed. RESULTS: The Leu1007finsC variant was associated with susceptibility to CD by case-control (4.2% versus. 1.4%, P = 0.01) and TDT analysis (P = 0.006). The Population Attributable Risk (PAR) for the 3 NOD2/CARD15 mutations was 7.9%. Carriage of NOD2/CARD15 variants was associated with, at diagnosis: decreased albumin (31.0% versus. 9.0%, P = 0.001) and raised CRP (25% versus. 9.5%, P = 0.04) and at follow up: need for surgery (39.5% versus. 12.8%, P = 0.0002) jejunal involvement (50% versus. 18.4%, P = 0.01) jejunal and ileal involvement (50% versus. 10.7%, P = 0.009), raised CRP (57.1% and 12.8%, P = 0.0009), lower weight/height centile (75.0% versus. 20.2%, P = 0.03, 50.0% versus. 16.0%, P = 0.001 respectively) and stricturing disease (45.5% versus. 19.4%, P < 0.05). Multifactorial analysis demonstrated carriage was associated with need for surgery (P = 0.004, OR 4.9 [1.5-14.7]). CONCLUSIONS: These NOD2/CARD 15 variants in the Scottish early onset CD population have a definite, albeit relatively small contribution to CD susceptibility (PAR 7.9%) but a major impact on phenotype. In particular NOD2/CARD15 variants are strongly associated with several markers of disease severity in pediatric CD, notably need for surgery.     

NOD2/CARD15基因R702W、G908R及L1007fs多态性与广西壮族人群炎症性肠病的相关性

目的:探讨我国广西壮族人群NOD2/CARD15基因R702W、G908R及L1007fs的遗传多态性与炎症性肠病的相关性.方法:分别收集2007-02/2010-10在广西地区无亲缘关系的壮族(n=70)和汉族(n=76)IBD患者及壮族(n=80)和汉族(n=84)正常对照者的肠黏膜组织.采用酚氯仿法提取各组织样本DNA,采用聚合酶链反应-限制性片段长度多态性分析(PCR-RFLP)方法对NOD2/CARD15基因R702W、G908R及L1007fs进行检测,统计基因型及等位基因频率,分析上述3个多态性位点与广西壮族人群炎症性肠病的相关性.结果:广西壮族和汉族IBD患者与正常对照者均未发现NOD2/CARD15基因R702W、G908R及L1007fs突变型基因型,所有多态性位点上的基因型全部为野生型纯合子,其基因型频率和等位基因频率分布在IBD患者和正常对照者中差异无统计学意义(P>0.05).结论:NOD2/CARD15基因R702W、G908R及L1007fs多态性与广西壮族人群炎症性肠病无明显相关性.     

CARD15/NOD2 gene variants are associated with familially occurring and complicated forms of Crohn's disease

BACKGROUND: Variants of the caspase activating recruitment domain 15/nucleotide oligomerisation domain 2 (CARD15/NOD2) gene have been associated with susceptibility to Crohn's disease (CD). Aim: Our aim was to evaluate the allele frequencies of the CARD15 variants R702W, G908R, and 1007fs in Finnish inflammatory bowel disease (IBD) patients and to search for possible associations between CARD15 variants and occurrence of familial forms of IBD or complicated forms of CD. PATIENTS AND METHODS: We investigated 198 sporadic CD patients, 46 probands with familial CD, 27 CD probands from mixed IBD families, 99 unrelated patients with ulcerative colitis (UC), and 300 control individuals for the occurrence of the CARD15 gene variants R702W, G908R, and 1007fs. RESULTS: In CD patients, the allele frequencies for the rare variants of these polymorphisms were 3.3%, 0.6%, and 4.8% (total 8.7%), and the corresponding frequencies in healthy controls were 1.8%, 0%, and 1.7% (total 3.5%) (8.7% v 3.5%; p<0.01). In UC patients allele frequencies were comparable with those in controls. The frequency of the 1007fs polymorphism variant allele was significantly higher among all CD patients than in controls (4.8% v 1.7%; p<0.01) but there was no significant difference in allele frequencies between the CD and UC groups. The 1007fs allele frequency was higher in familial CD than in non-familial cases with CD (10.9% v 3.5%; p<0.01). There were no significant differences in the allele frequencies of the R702W and G908R polymorphisms between CD patients, UC patients, and controls. We found that 15.5% of CD patients, 9.1% of UC patients, and 6.7% of controls carried at least one of the CARD15 variants. In CD patients carrying at least one of the three NOD2 variants, the ileum was affected more often than in non-carrier CD patients (90% v 73%; p<0.05), they had stricturing or penetrating disease more often than non-carriers (88% v 56%; p<0.01), and they had an increased need for bowel surgery. CONCLUSIONS: The frequency of NOD2 gene variants was lower in genetically homogenous Finns than in other populations. The 1007fs variant was associated with CD. The occurrence of CARD15 variants predicted ileal location as well as stricturing and penetrating forms of CD.     

Distribution of Common CARD15 Variants in Patients with Sporadic Crohn’s Disease: Cases from Turkey

Three common genetic variations, namely, R702W, G908R, and 1007fs, on CARD15 have been shown to increase the risk for Crohn’s disease (CD) in Caucasian populations. In this study the frequencies of these CARD15 variants were determined by genotyping in 56 patients with CD and 100 healthy ethnically matched controls from Turkey. Overall frequency of all three variants was 10.7% in CD patients, compared with 1.5% in controls (odds ratio [OR]: 7.9). Among them, the frequency of the G908R variant allele was 8% in CD cases, compared with 0% in controls (OR: 36.8). The allele frequencies of three CD-related CARD15 variants were considerably lower in the control group compared to the reported Caucasian populations. Among the described CARD15 variants, G908R confers an increased susceptibility to CD, whereas the more frequently reported associations in Europeans with R702W and 1007fs are not confirmed in this Turkish population.     

Prevalence of CARD15/NOD2 mutations in Caucasian healthy people

BACKGROUND: Crohn's disease (CD) has been associated with CARD15/NOD2 mutations in Caucasians. The R702W, G908R, and 1007fs mutations represent 82% of the mutated chromosomes. The relative risk of developing CD in homozygous or compound heterozygous people has been estimated as between 10 and 40 times that of the general population. This high risk may support the opinion that CARD15/NOD2 variants are strong CD risk factors at the individual and population levels. SUBJECTS AND METHODS: The allele and genotype frequencies were calculated for the R702W, G908R, and 1007fs mutations in 3,575 Caucasian healthy controls recruited by 15 groups distributed on three continents. Geographic homogeneity was tested and the observed proportion of double mutants was compared with the expected value using chi2 tests. RESULTS: The allele frequencies of the R702W, G908R, and 1007fs mutations were 4.3% (3.6-4.9), 1.2% (0.8-1.6), and 2.3% (1.8-2.8), respectively, with large geographic fluctuations of the G908R, 1007fs, and wild-type alleles (P<0.0001). At the population level, no simple relationship was observed between mutation frequencies and the disease incidences in the studied populations. At the individual level, no significant deficit of double-dose mutation carriers among healthy controls was found, providing strong evidence that the penetrances of the most at-risk genotypes are low. CONCLUSION: Altogether, these data confirm that CARD15/NOD2 acts in interaction with other unknown risk cofactors.     

OCTN and CARD15 gene polymorphism in Chinese patients with inflammatory bowel disease

AIM： To investigate the single nucleotide polymorphism （SNPs） distribution of NOD2/CARD15 （R702W, G908R）, OCTN1 1672CFT and OCTN2-207G/C in Chinese patients with inflammatory bowel disease （IBD）. METHODS： A total of 61 patients with Crohn＇s disease （CD）, 151 patients with ulcerative colitis （UC）, and 200 unrelated healthy controls were genotyped. Genotyping was performed by sequence specific primer polymerase chain reaction （PCR-SSP） or by restriction fragment length polymorphism （PCR-RFLP） analysis. RESULTS： Among the subjects in our study groups, including patients with CD, UC and healthy controls, none had OCTN and CARD15 variants and very rare IBD family history was found in our patients with the percentage of 0 （0/61 with CD） and 1.3% （2/151 with UC）. CONCLUSION： Our results indicate that although OCTN or CARD15 variation is associated with susceptibility to IBD in Western populations, these might be rare and may not be associated with susceptibility to IBD in Chinese patients.     

Contribution of OCTN variants within the IBD5 locus to pediatric onset Crohn's disease

BACKGROUND & AIMS: The IBD5 locus on chromosome 5q31 is a confirmed Crohn's disease (CD) susceptibility locus in adults. Recently, two polymorphisms in the organic cation transporter (OCTN) gene cluster within the IBD5 locus have been found to be associated with CD. Although the original report of significant linkage to IBD5 was in families with at least one case of early age at onset CD, there are no published reports on the role of OCTN genes in pediatric onset CD. We performed a comprehensive analysis of OCTN variants in an independent, exclusively pediatric onset CD cohort and examined the genotype/phenotype correlations. METHODS: 264 Caucasian CD children (172 of them were trios) were genotyped along with 527 controls for OCTN1 (SLC22A4 C1672T), OCTN2 (SLC22A5 G-207C), and two haplotype-tagging SNPs (IGR2230 and IGR2198). RESULTS: TDT confirmed the association of SLC22A4 and SLC22A5. Case-control analysis of the SLC22A4 1672T, SLC22A5-207C diplotype showed significant association (p=0.04) with CD susceptibility compared with controls. Little correlation was seen with regard to clinical phenotype and the SLC22A4/SLC22A5 diplotype. There was no significant interaction between the SLC22A4/SLC22A5 diplotype and the three CD-associated CARD15 SNPs. CONCLUSIONS: We confirm the association of the OCTN variants (SLC22A4 and SLC22A5) in pediatric onset CD as seen in adult CD cohorts. However, when an extended IBD5 haplotype was examined, no independent association between OCTN variants and pediatric onset CD can be demonstrated. Compared with adults, a relatively weak association of the OCTN variants was observed in our CD cohort. No definitive genotype-phenotype correlation or gene-gene interactions with CARD15 were observed. Although the IBD5 locus is associated with pediatric onset CD, no definitive conclusions can be drawn about OCTN variants as causative genes in pediatric CD at this point.