维生素D受体基因位点单核苷酸多态性与梅毒易感性相关研究

目的探讨维生素D受体(VDR)基因Fox I、Bsm I、Apa I和Tap I位点多态性与梅毒易感性之间是否存在关联。方法应用质谱分析的方法检测106例梅毒患者及134名健康对照者VDR基因Fox I、Bsm I、Apa I和Tap I位点基因型及等位基因分布频率。结果病例组和对照组间VDR基因Fox I、Bsm I、Apa I和Tap I 4个基因位点基因型分布无明显差异(Fox I:P=0.922;Bsm I:P=0.460;Apa I:P=0.287;Tap I:P=0.093);两组间等位基因分布也均无统计学差异(Fox I C vs.T:P=0.742;Bsm I C vs.T:P=0.345;Apa I G vs.T:P=0.113;Tap I A vs.G:P=0.345);两组间在隐性遗传模型和显性模型下比较也未发现有统计学差异(Fox I CC vs.CT+TT:P=0.687;Fox I TT vs.CT+CC:P=0.905;Bsm I CC vs.CT+TT:P=0.336;Apa I TT vs.GT+GG:P=0.438;Apa I GG vs.GT+TT:P=0.123;Tap I AA vs.AG+GG:P=0.204)。结论 VDR基因Fox I、Bsm I、Apa I和Tap I位点多态性与梅毒易感性之间无显著相关。     

Vitamin D receptor gene polymorphisms are associated with psoriasis susceptibility and the clinical response to calcipotriol in psoriatic patients

Psoriasis is a common genetic disease characterized by hyperproliferation and disordered maturation of keratinocytes. To date, many association studies between psoriasis and VDR gene have been conducted, but the results are controversial. Furthermore, vitamin D₃ analogue has anti-psoriatic activity; however, the clinical response is variable. This study was conducted to explore whether VDR gene polymorphisms are associated with psoriasis susceptibility and clinical response to calcipotriol in psoriatic patients. A total of 110 patients and 183 controls were genotyped for VDR gene polymorphisms rs2228570, rs731236, rs1544410 and rs7975232 by LDR method. SNP-based and haplotype-based association analyses were subsequently performed. Patients with PASI < 3 were treated with calcipotriol ointment monotherapy. After 6 weeks of therapy, the correlations between efficacy and the genotypes of each polymorphism were evaluated. The results showed that for rs7975232, allele A was significantly over-represented in psoriasis patients relative to controls (39.09% vs. 27.05%, OR (95% CI) = 1.731 (1.213-2.471)), and compared with the reference CC genotype, the following ORs were observed: AA genotype OR = 2.404 (95% CI: 1.085-5.328; P = .034) and GA genotype OR = 2.143 (95% CI: 1.283-3.579; P = .005). Haplotype analyses showed that the rs2228570/rs731236/rs1544410/rs7975232 CTGA was significantly over-represented in psoriasis patients compared with controls (OR (95% CI)=1.907 (1.132-3.214); P = .020). Among the patients with PASI < 3, the response rates to calcipotriol were significantly higher in patients with rs7975232 CC genotypes than in those with other genotypes (x² = 9.172, P = .010). These data suggest that VDR polymorphisms are associated with psoriasis susceptibility and clinical response to calcipotriol in psoriatic patients.     

基于靶基因捕获测序法对海南省汉族寻常型银屑病与维生素D受体基因关系的研究

目的:探讨维生素D受体（VDR）基因多态性与寻常型银屑病的关系。方法:2018年3月至2020年2月在海南医学院第二附属医院皮肤性病科和体检中心分别收集101例海南籍汉族寻常型银屑病患者与79例海南籍健康对照。采用靶基因捕获测序法对VDR基因及其上、下游各2 kb进行全长测序,对于最小等位基因频率大于1%的单核苷酸多态...     

Serum levels of 25-hydroxy vitamin D in psoriatic patients

Studies have shown a relationship between vitamin D and psoriasis. We compared serum levels of vitamin D of 20 psoriasis patients and 20 controls. The median vitamin D level was 22.80 ± 4.60 ng/ml; the median in the cases was 23.55 ± 7.6 ng/ml, and in controls 22.35 ± 3.10 ng/ml (p = 0.73). Only 2 cases and 4 controls had sufficient levels of vitamin D, although without statistical significance between the groups (p = 0.608). Levels were lower in women with psoriasis compared with those in male patients (20.85 ± 6.70 x 25.35 ± 2.90 ng/ml, p = 0.03), a finding that was not observed among controls.     

Association of MIF promoter polymorphisms with psoriasis in a Han population in northeastern China

BackgroundMacrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine that plays an important part in the pathogenesis of autoimmune diseases. A high level of MIF has been detected in plaques of psoriasis and the sera of patients with psoriasis. Polymorphisms associated with autoimmune and inflammatory diseases exist in the promoter region of MIF and alter its expression.ObjectiveThe aim of this study was to evaluate the potential relationship between functional polymorphisms of MIF and psoriasis in a Han population in northeastern China.MethodsTwo-hundred-and-forty psoriasis patients and a control group of 269 healthy volunteers were included in this study. We genotyped MIF-173G/C using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). MIF-794CATT_5–8 microsatellite polymorphism was genotyped by polyacrylamide gel electrophoresis (PAGE).ResultsNo significant difference in the distributions of alleles, genotypes and haplotypes was observed between patients and controls. When patients were divided into subtypes according to sex, family history and age of onset, distribution of the MIF-173C allele between male and female patients was significantly different (P = 0.04). MIF-173C allelic distribution between late onset psoriasis patients and controls was also different (P = 0.02), as well as late onset patients and early onset subjects (P = 0.04).ConclusionsThese results suggested a preliminary association between the MIF-173C allele and male psoriasis and late onset psoriasis in the studied population. In addition, the distributions of the two polymorphisms in Asian populations were quite different from the other continental populations.     

Upregulation of vitamin D receptor levels by 1,25(OH)2 vitamin D3 in cultured human keratinocytes

Received: 15 May 1996     

内质网氨基肽酶1基因rs27044、rs30187和rs26653多态性与汉族寻常性银屑病相关性研究

目的 探讨内质网氨基肽酶1（ERAP1）基因多态性与汉族人寻常性银屑病的遗传关联性。 方法 收集寻常性银屑病患者289例,对照组292例,知情同意后采集外周静脉血5 ml。选择位于ERAP1基因编码区域的3个单核苷酸多态性（SNP）,利用连接酶检测反应进行基因分型（rs27044、rs30187和rs26653）。利用PLINK1.07软件进行统计分析,χ2检验比较患者组与对照组等位基因频率及基因型频率,计算等位基因的相对危险度估计值比值比（OR）及其95%可信区间（95% CI）。利用Haploview软件进行单倍型分析。 结果 rs30187等位基因C及rs26653等位基因G在患者组的频率（分别为0.460 2和0.430 8）、尤其是早发型组中的频率（0.448 5和0.422 7）均明显低于对照组（0.534 2和0.501 7）,差异均有统计学意义（均P < 0.05）。rs27044、rs30187及rs26653这3个SNP两两间均存在强连锁不平衡（r2 ≥ 0.717,D′ ≥ 0.962）。基因型分析结果显示,在隐性遗传模式下,rs30187在患者组及早发型组的基因型频率均显著低于对照组,差异均有统计学意义（P值分别 < 0.05和 < 0.016 7）。单倍型分析发现,单倍型（H4：CTC）在患者组的频率（0.050）、尤其是早发型组的频率（0.052）均明显高于对照组（0.022）,差异均有统计学意义（P值分别 < 0.05、 < 0.016 7）。 结论 ERAP1基因多态性与汉族人寻常性银屑病可能相关,特别是早发型患者。危险单倍型（H4：CTC）可能是寻常性银屑病一个重要的易感因素。     

汉族人银屑病患者 IL －23R 单核苷酸多态性的研究

目的：探讨白细胞介素-23受体（IL-23R）基因多态性与中国汉族人群银屑病易感性的关系。方法：在NCBI数据库上检索 IL-23R 的7个 SNP 位点（ rs11209026、rs1004819、rs10489629、rs1343151、rs10889677、rs11209032、rs1495965）。从门诊病人中收集银屑病患者93例,选择健康献血员108例作为正常对照,检测共201例样品中7个SNP位点突变情况。多态性及其单倍型与银屑病相对危险度等数据处理均采用SPSS软件系统进行。结果：7个TagSNP位点中有4个等位基因（ rs1004819、rs1343151、rs10889677、rs1495965）频率在病例组和对照组之间的差异有统计学意义（ P＜0.01）。结论：IL-23R基因多态性与汉族人银屑病易感性有关联。其中 4个 SNP 位点（ rs1004819、rs1343151、rs10889677、rs1495965）与银屑病发病明显相关。     

新疆汉族SPRR2E基因单核苷酸多态性与寻常性银屑病的关系

目的通过测定中国新疆汉族非家系寻常性银屑病SPRR2E基因的外显子编码区序列,研究SPRR2E基因与新疆汉族银屑病发病的关系。方法从新疆汉族正常人和寻常性银屑病患者的外周血中提取基因组DNA,用自动测序的方法测定SPRR2E基因的外显子编码区序列,对结果进行统计学分析处理。结果SPRR2E基因编码区第156核苷酸(+156bp)处存在A或G二态性,可表现为AA纯合、GG纯合和AG杂合三种基因型,病例组AA基因型频率明显高于对照组,差异有统计学意义(P<0.05)。结论SPRR2E基因外显子编码区序列的第156核苷酸多态性与新疆汉族非家系寻常性银屑病的发病有关。     

寻常性银屑病患者白介素20基因多态性研究

目的:选取位于1q32区域的白介素(IL)-20基因,通过检测基因序列研究基因多态性与银屑病的相关性.方法:提取银屑病患者(203例)和正常人(91名)基因组DNA并进行扩增,通过自动测序的方法测定IL-20基因及启动子区域的序列,检测其单核苷酸多态性(SNP)位点,并以SPSS软件进行统计学处理.结果:①IL-20启动子SNP位点-1723 C>G多态性的G等位基因频率,在以上呼吸道感染为发病诱因或加重因素的寻常性银屑病患者组和正常对照组间的频率分别为45.8%和32.4%,两组间差异有统计学意义(X2=5.539,P=0.019).结论:位于IL-20基因启动子区的SNP位点-1723C>G可能与以上呼吸道感染为发病诱因或加重因素的寻常性银屑病相关.     

IL-12B和IL-23R基因多态性与中国汉族人银屑病易感性关联研究

目的 探讨中国汉族人群中IL-12B和IL-23R基因多态性与银屑病易感性的关系。方法 在217例银屑病患者和288例正常人对照中,采用DNA直接测序法对IL-12B和IL-23R基因的多态性位点进行基因分型,并将阳性结果在一个更大的包括578例银屑病患者和1422例正常人对照的整合样本群中,使用Taqman探针荧光PCR技术进行重复检验。实验数据进行Hardy-Weinberg平衡检验、卡方检验、单倍型分析和Logistic回归模型分析。结果 IL-12B rs6887695位点等位基因频率在病例组与对照组之间差异有统计学意义,OR = 1.33（95% CI 1.03 ~ 1.73）,P = 0.028;IL-23R rs11465817和rs1343152位点等位基因频率在病例组与对照组之间差异无统计学意义（P > 0.05）。连锁不平衡分析发现,rs11465817和rs1343152位点之间有一定的连锁不平衡（D′ = 0.744,r2 = 0.281）。对2个位点进行单倍型分析发现,A-A ∶ OR = 2.890,P = 0.0018,提示这一单倍型具有显著的发病风险。结论 IL-12B基因rs6887695多态性与中国汉族人群银屑病易感性相关;IL-23R基因rs11465817、IL-23R基因rs1343152位点多态性与中国汉族人群银屑病易感性无显著相关性,但是,IL-23R基因rs11465817-rs1343152位点A-A单倍型的中国汉族人具有更高的银屑病发病风险。     

寻常性银屑病患者HAX-1基因多态性的研究

目的通过检测HAX-1基因序列研究基因多态性与银屑病的相关性。方法提取银屑病患者(247例)和正常人(102例)基因组DNA并进行扩增,通过自动测序的方法测定HAX-1基因及启动子区域的序列,检测其SNP位点,并以SPSS软件进行统计处理。结果①测序结果:测序总长度5313bp,发现1个位于5’UTR的高频SNP。②病例-对照关联分析结果:5’UTR区的SNP位点-104T>G多态性的T等位基因频率在寻常性银屑病患者组和正常对照组间的频率分别为53.4%和48.5%,在两组间无显著性差异(P>0.05)。结论银屑病患者与正常人HAX-1基因5’UTR区的SNP位点-104T>G基因频率无显著差异。     

Toll样受体9基因多态性与湖北汉族系统性红斑狼疮易感性的关系

目的：明确Toll样受体9基因rs187084、rs352140位点单核苷酸多态性与湖北汉族人口中系统性红斑狼疮疾病易感性的关系。方法：PCR扩增80例系统性红斑狼疮患者和84例健康志愿者的外周血目的基因片段,通过SNaPshot法检测rs187084、rs352140这两个位点的基因型及等位基因频率。结果：系统性红斑狼疮实验组及健康对照组中rs187084的AA,GG,AG基因型频率分别为37.50%,18.75%,43.75%和47.62%,13.10%,39.29%,无显著统计学差异（P>0.05）。rs352140 AA,GG,AG基因型频率在实验组及对照组中分别为18.75%,43.75%,37.50%和11.90%,48.81%,39.29%,无显著统计学差异（P>0.05）。结论：Toll样受体9的rs187084、rs352140基因位点的单核苷酸多态性可能与系统性红斑狼疮的发病不相关。     

An association between IL-9 and IL-9 receptor gene polymorphisms and atopic dermatitis in a Korean population

Background

The genes encoding IL-9 and IL-9R have recently been implicated in the genetic basis of asthma and allergy. Although studies performed on transgenic and knockout mice have shown conflicting results, no evidence of skin changes has ever been reported in these animals.

Objective

To find association of the SNPs in IL-9 and IL-9R genes and interaction of these genes in atopic dermatitis.

Method

We genotyped 5 SNPs from the IL-9 and IL-9R genes of 1090 subject samples (631 AD patients and 459 normal controls). A luciferase assay was then performed for the rs31563 (−4091G/A) SNP located in the IL-9 gene promoter region.

Result

The rs31563 (−4091G/A) SNP in the IL-9 gene was significantly associated with the AD phenotype, especially allergic-type AD. In the luciferase assay, the rs31563 G construct was observed to have 1.54 times higher activity than the rs31563 A construct. Although no association was found between SNPs in IL-9R gene and AD, the rs3093467 SNP showed association with non-allergic AD. In the gene-gene interaction analysis, we found that IL-9/IL-9R genotype rs31563 GG/rs3093467 TT conveyed a greater risk for AD phenotype development.

Conclusion

Significant evidence exists to suggest that the rs31563 SNP (−4091G/A) located in the IL-9 gene is associated with an increased susceptibility to AD. Similarly, the rs3093467 SNP in IL-9R gene seems to be associated with an increased risk for developing non-allergic AD. In a subsequent gene-gene interaction analysis, the rs31563 GG/rs3093467 TT genotype combination (IL-9/IL-9R) was found to exert a synergistic effect in the development of the AD phenotype. As the classes of helper T cells are diverse and the function of IL-9 cytokine has not been fully described, the cutaneous function of IL-9 needs to be further explored in future studies.     

Serum calcium and phosphorus measurements in patients with psoriasis: a retrospective review

The recent success of vitamin D and its analogues in the treatment of psoriasis has generated extensive research into the role of vitamin D and calcium in this hyperproliferative skin disease. The objective of this study was to evaluate calcium and phosphorus levels in patients admitted to our dermatology service for treatment of severe psoriasis. The charts of 15 patients from 21 to 80 years of age were reviewed and admission laboratory data values recorded. Retrospective analysis of laboratory data from patients admitted with psoriasis demonstrated no abnormalities of calcium metabolism when assessed by calcium and phosphorus levels. Although vitamin D and its analogues appear to have a role in the treatment of psoriasis, this study suggests that a systemic aberration of calcium metabolism probably does not occur.     

The association of vitamin D receptor gene polymorphisms and serum 25-hydroxyvitamin D levels with generalized vitiligo

Summary Background Vitiligo is an acquired depigmentation autoimmune disorder that has been described as being associated with lower levels of 25-hydroxyvitamin D [25(OH)D]. Genetic variations within the vitamin D receptor (VDR) gene could lead to significant receptor dysfunction, and could further affect the formation of the biologically active 25(OH)D. Therefore, we hypothesized that VDR polymorphisms might be involved in vitiligo by affecting the formation of 25(OH)D. Objectives To evaluate the potential association between VDR polymorphisms and vitiligo susceptibility and the serum levels of 25(OH)D. Methods We performed a hospital-based study of 749 patients with vitiligo and 763 matched controls. We investigated four VDR polymorphisms (FokI, BsmI, ApaI and TaqI) to determine whether they are associated with vitiligo susceptibility in the Chinese population. In addition, the levels of 25(OH)D were measured to evaluate possible associations between the VDR polymorphic variants and clinical and laboratory findings of vitiligo. Results A significantly decreased risk of developing vitiligo was found to be associated with the BsmI-B, ApaI-A and TaqI-t alleles. According to the genotype distribution, 25(OH)D concentrations were significantly higher in patients carrying the FokI ff or ApaI AA genotypes compared with those carrying the FF or aa genotypes. Logistic regression analysis also showed a dose-response relationship between decreased risk of vitiligo and increased 25(OH)D levels in ApaI-A variant genotype carriers. Conclusions Our findings suggest that these VDR polymorphisms are associated with 25(OH)D levels and that there exists a genetic predisposition for vitiligo in the Chinese population.     

Association between vitamin D receptor polymorphisms and vitiligo susceptibility: An updated meta-analysis

Background

Vitamin D receptor (VDR) polymorphisms may play an important role in the vitiligo susceptibility. There have been many studies looking at the associations between VDR polymorphisms and vitiligo risk, but the conclusions are still up for debate.

Aim

This study aimed to determine whether polymorphisms in the VDR are associated to the susceptibility to vitiligo.

Methods

Vitamin D receptor polymorphisms in vitiligo patients and controls were identified using PubMed/Medline and Embase databases. The relationships between the VDR ApaI, TaqI, BsmI, and TaqI polymorphisms and vitiligo were investigated using meta-analyses of all participants and Asian, Arab, European, and Latin American groups.

Results

This meta-analysis included 13 papers with 2034 patients and 2771 controls. In all individuals, there was no link between vitiligo and the VDR ApaI A allele (OR = 0.889, 95% CI = 0.713–1.109, p = 0.298). However, in Asians (OR = 0.721, 95% CI = 0.553–0.940, p = 0.016) but not in Europeans or Arabs, there was a link between the VDR ApaI A allele and vitiligo. Utilizing recessive, dominant, and homozygote contrast models, a link between vitiligo and the VDR ApaI polymorphism was discovered in Asians. Meta-analysis of the VDR BsmI polymorphism showed a significant association between vitiligo and the B allele (OR = 0.812, 95% CI = 0.686–0.961, p = 0.015). In contrast, no connection between vitiligo and VDR polymorphisms was identified for TaqI and FokI polymorphisms.

Conclusion

In the Asian population, ApaI and BsmI polymorphisms in VDR have been correlated to vitiligo susceptibility. However, TaqI and FokI polymorphisms in VDR are not associated with vitiligo susceptibility in European, Asian, Arab, and Latin American populations.