阿维A对寻常性银屑病患者外周血细胞因子IFN-γ,IL-4及IL-17的影响

目的通过对阿维A治疗前后寻常性银屑病患者血清中Th1,Th2,Th17细胞的相关细胞因子IFN-γ,IL-4及IL-17的研究,探讨阿维A治疗寻常性银屑病的作用机制。方法采用ELISA法检测健康对照、阿维A治疗前后寻常性银屑病患者血清中IFN-γ,IL-4,IL-17浓度的变化。结果阿维A治疗前血清IFN-γ(98.97±15.29pg/mL)、IL-17(103.05±12.53pg/mL)浓度较健康对照(IFN-γ48.39±17.83pg/mL、IL-1773.75±12.53pg/mL)显著增高(P<0.01),治疗后血清IFN-γ(41.62±19.73pg/mL)、IL-17(65.92±16.19pg/mL)浓度较治疗前显著下降(P<0.01),与健康对照比较差异无统计学意义(P>0.05)。IL-4的血清浓度治疗前(36.70±34.87pg/mL)、治疗后(38.20±26.63pg/mL)与健康对照(30.81±34.87pg/mL)比较差异无统计学意义(P>0.05)。结论阿维A在治疗寻常性银屑病过程中,可能降低患者血清中Th1,Th17细胞相关细胞因子IFN-γ,IL-17的浓度,而对Th2细胞相关细胞因子IL-4可能无明显影响。     

二期梅毒患者血清IL-17,IL-23和ROR-γt的检测

目的检测二期梅毒患者血清IL-17,IL-23和维甲酸受体相关孤儿受体γt(ROR-γt)的水平,探讨Th17细胞在梅毒免疫致病机制中的可能作用。方法采用酶联免疫吸附法检测30例二期梅毒患者和20例正常人血清IL-17,IL-23和ROR-γt水平。结果 30例二期梅毒患者血清IL-17,IL-23和ROR-γt水平分别为(24.8±20.9)pg/mL,(32.1±8.3)pg/mL和(120.2±40.6)pg/mL,均较健康对照[(12.7±14.2)pg/mL,(21.0±8.7)pg/mL,(72.0±41.8)pg/mL]明显升高(P<0.05)。梅毒患者血清IL-17,IL-23和ROR-γt水平与RPR滴度间无线性相关(P>0.05)。结论梅毒患者血清IL-17,IL-23和ROR-γt水平的升高可能与梅毒的免疫致病机制有关。     

慢性湿疹患者皮损IL-18的表达及意义

目的 探讨IL-18在慢性湿疹发病中的作用。方法 采用RT-PCR方法测定慢性湿疹患者皮损中IL-18、IFN-γmRNA表达水平,ELISA方法测定血清中IL-18、IFN-γ蛋白水平。用EASI标准对慢性湿疹患者病情进行评分。结果 慢性湿疹患者皮损和健康对照组皮肤组织IL-18 mRNA分别为（1.04 ± 0.29） pg/mL、（0.52 ± 0.15） pg/mL,IFN-γ mRNA分别为（0.96 ± 0.34） pg/mL、（0.47 ± 0.12） pg/mL。慢性湿疹患者皮损中IL-18 mRNA、IFN-γ mRNA高于正常对照组,差异具有统计学意义（P < 0.01）,二者与慢性湿疹病情评分呈正相关。慢性湿疹患者和健康对照血清中IL-18蛋白分别为（475.8 ± 59.4） pg/mL、（123.6 ± 29.5） pg/mL,IFN-γ蛋白水平分别为（10.1 ± 7.0） pg/mL、（11.1 ± 3.4） pg/mL。血清中IL-18蛋白水平高于正常对照组,差异具有统计学意义（P < 0.01）,IFN-γ蛋白水平低于正常对照组,但差异无统计学意义（P > 0.01）,二者与慢性湿疹病情评分无明显相关性。结论 IL-18可能参与慢性湿疹的发病过程,在皮损局部,可能与其诱导产生IFN-γ等Th1型细胞因子,介导超敏反应有关。     

色素障碍性皮肤病

20 0 3 3 3 0 2　白癜风患者血清及负压吸引疱疱液一氧化氮及相关细胞因子检测 /谭雪晶 (大连医大一院皮肤科 )…∥中华皮肤科杂志 .-2 0 0 3 ,3 6(7) .-4 0 0～ 40 2检测结果显示 ,白癜风患者血清一氧化氮(N O )、干扰素γ (IFN -γ )水平明显高于正常对照组 ,白介素 1 0 (IL -1 0 )明显低于正常对照组 ;局限型 N O水平及泛发型 IFN -γ水平在进展期明显高于稳定期 ;局限型白斑处负压吸引疱疱液明显高于非白斑部位。提示 N O在白癜风发病中具有一定作用 ,IF N -γ、IL -1 0可能亦参与白癜风发病。参8　 (汤亚娥 )2 0 0 3 3 3 0 3　…     

糖皮质激素对SLE患者Th1/Th2类细胞因子mRNA表达及产生的影响

目的 探讨糖皮质激素治疗对系统性红斑狼疮(SLE)患者外周血单一核细胞(PBMC)中Th1/Th2类细胞因子mRNA表达及产生的影响.方法 采用逆转录-聚合酶链反应和酶联免疫吸附试验检测糖皮质激素治疗前后SLE患者PBMC中Th1类细胞因子干扰素γ(IFN-γ)和Th2类细胞因子白介素4(IL-4)、白介素10(IL-10)mRNA表达和产生的变化.结果 经糖皮质激素治疗后SLE患者PBMC产生IFN-γ,IL-4和IL-10水平分别为(74.08±15.85)pg/mL,(246.43±45.25)pg/mL,(549.52±67.00)pg/mL;mRNA平均表达水平分别为0.3298±0.2181,0.4951±0.2938,0.8671±0.6620.治疗前IFN-γ,IL-4和IL-10水平分别为(113.5±27.6)pg/mL,(272.97±33.78)pg/mL,(625.32±104.61)pg/mL;mRNA平均表达水平分别为1.4094±0.6317,0.6872±0.4713,1.1758±0.6255;治疗后各细胞因子水平均较治疗前显著降低(P<0.01);但IFN-γ较IL-4,IL-10降低更为显著.结论 糖皮质激素可通过影响SLE患者细胞因子mRNA表达和产生,调节Th1/Th2类细胞因子网络平衡,可能为糖皮质激素治疗SLE的机制之一.     

尖锐湿疣皮损组织粗提蛋白对DC分泌IL-12和淋巴细胞分泌IFN-γ的影响

目的探讨尖锐湿疣(CA)皮损组织粗提蛋白对树突状细胞(DC)分泌IL-12水平及对淋巴细胞分泌IFN-γ水平的影响。方法将体外诱导培养的DC分别以细菌脂多糖(LPS)、CA粗提蛋白、包皮粗提蛋白和PBS溶液刺激,孵育2～14天,ELISA法分别检测上清液中IL-12和IFN-γ的水平。结果LPS组IL-12和IFN-γ表达水平分别为(262.0±18.5)pg/mL和(494.3±48.8)pg/mL,CA组分别为(146.0±38.0)pg/mL和(392.0±39.7)pg/mL,包皮组分别为(12.0±5.2)pg/mL和0 pg/mL,PBS组为(10.7±6.43)pg/mL和0 pg/mL。CA组的IL-12和IFN-γ的表达水平均显著高于PBS组和包皮组,差异有显著性(P<0.05)。结论CA皮损组织粗提蛋白可能作为一种免疫原,增强DC的免疫功能,进而促进淋巴细胞的激活,为今后治疗CA的DC疫苗研究提供一些理论依据。     

白癜风患者皮肤组织液氧化-抗氧化物水平比较分析

目的探讨体内氧化-抗氧化状态与白癜风发病的关系。方法采用化学比色法,对24例白癜风患者白斑和非白斑(正常部位皮肤)以及10例健康者组织液进行过氧化氢(H2O2)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH-PX)检测。结果白癜风患者白斑H2O2水平(53.97±19.03)mmol/L明显高于健康组(28.98±22.81)mmol/L,进展期患者白斑H2O2水平(56.64±19.91)mmol/L明显高于非白斑(34.71±22.23)mmol/L,差异均有统计学意义(P均﹤0.01);白癜风白斑CAT水平(17.34±11.05)U/mL明显低于健康组(41.29±16.57)U/mL,差异有统计学意义(P﹤0.01),进展期白斑CAT水平(13.63±8.32)U/mL低于非白斑(35.72±16.14)U/mL,差异有统计学意义(P﹤0.05);进展期患者的白斑与非白斑处GSH-PX均高于健康组,差异有统计学意义(P均﹤0.05)。结论白癜风发病可能与H2O2增高、CAT降低等氧化-抗氧化失衡有关。     

白癜风患者血清和皮肤组织液IL-18及IFN-γ水平变化的研究

目的　探讨IL 18和IFN γ在不同类型、不同时期白癜风患者血清及皮肤组织液中水平的变化 ,并分析它们的相关性。方法　采用双抗体夹心ELISA法测定 5 7例不同类型、不同时期白癜风患者血清中IL 18和IFN γ的水平 ,并与 2 0例正常对照组比较 ;对其中 45例患者白斑区、非白斑区及 10例正常对照组皮肤组织液同样进行上述细胞因子检测。结果　寻常型白癜风患者血清IL 18和IFN γ(10 0 .41± 40 .0 6pg/ml ,5 5 .0 2± 6.2 8pg/ml)水平均明显高于 (P均 <0 .0 1)正常对照组 (69.15± 18.68pg/ml ,5 1.19± 6.3 5 pg/ml )。寻常型白癜风患者血清IL 18和IFN γ水平进展期高于稳定期 ,二者呈正相关性 ;散发型白癜风白斑区皮肤组织液IL 18(114 .5 4± 2 8.77pg/ml)水平明显高于 (P <0 .0 1)正常对照组 (65 .0 2± 16.3 5 pg/ml)。节段型白癜风患者血清及皮肤组织液中两种细胞因子水平和对照组差异无显著性 (P>0 .0 5 )。结论　寻常型白癜风患者血清或皮肤组织液中两种细胞因子有异常表达 ;血清中IL 18与IFN γ存在高度相关性 ,表明IL -18及IFN -γ可能参与寻常型白癜风的发病。     

白癜风患者外周血淋巴细胞Fas及Fas配体和可溶性Fas的研究

目的探讨Fas抗原与Fas配体(FasL)及可溶性Fas(sFas)在白癜风发病中的作用。方法应用流式细胞计数仪对白癜风患者外周血淋巴细胞(PBLC)上Fas和FasL的表达情况进行了检测,用双抗体夹心酶联免疫吸附试验检测患者血清中sFas的含量。结果寻常型白癜风患者PBLC上Fas的表达(43.45%)较正常人(58.30%)显著降低(P<0.01),寻常型白癜风患者PBLC上FasL的表达(58.40%)亦较正常人(64.65%)显著降低(P<0.05);寻常型白癜风患者血清中sFas水平(3.95±3.23μg/L)较正常人(1.51±0.71μg/L)明显增高(P<0.01),散发型白癜风患者进展期血清sFas水平(5.55±4.82μg/L)明显高于稳定期(2.94±2.29μg/L)(P<0.05),治疗后血清sFas水平较治疗前明显下降(P<0.001)。结论白癜风患者PBLC上Fas/FasL及循环sFas的表达均有异常,淋巴细胞Fas/FasL异常表达及Fas介导的细胞凋亡机制可能与白癜风的免疫异常及发病有关。     

色素障碍性皮肤病

20 0 30 35 1　白癜风患者血浆与皮肤疱液降钙素基因相关肽测定 /赵达明 (大连医大一院皮肤科 )…∥临床皮肤科杂志 .- 2 0 0 2 ,31(4 ) .- 2 2 8～ 2 2 9通过对 4 0例白癜风患者血浆及其中 2 5例皮肤疱液降钙素基因相关肽 (CGRP)的测定 ,认为寻常型白癜风 CGRP血浆浓度升高 (91.3± 2 4 .7pg/ml) ,其中进展期 (94 .3± 2 2 .2 pg/ml)高于稳定期(78.8± 2 3.7pg/ml) ,而节段型 (78.2± 19.4 pg/ml)则无明显变化。皮肤疱液白斑与非白斑处无明显差异 (P>0 .0 5 )。提示 CGRP可能与白癜风的发病存在一定关系。表 3参 9　 (汤亚娥 )2 0 0 …     

Comparisons of in vivo and in vitro photosensitivities and DNA repair in fibroblast and keratinocyte cells

Summary Minimal erythema dose of ultraviolet light correlated significantly with the UV-sensitivity of fibroblast cells from 5 patients with xeroderma pigmentosum, 13 patients with keratinocytic neoplasms of the skin, and 21 control subjects, but not with that of cells from 6 patients with photosensitive dermatitis. In unscheduled DNA synthesis after UV irradiation, the number of grains per nucleus was much less in keratinocytes than in fibroblasts, but the relative doseresponse relationship was similar. This indicates that keratinocytes can also be used in vitro UV-sensitivity studies.Supported in part by a Grant for Cancer Research from the Ministry of Education, Science and Culture of Japan     

Antimicrobial effects of phototherapy and photochemotherapy in vivo and in vitro

Summary We investigated the antimicrobial effects of phototherapy and photochemotherapy in vivo and in vitro. First, Staphylococcus aureus samples were obtained using stamp agar medium from inflammatory lesions of 29 adult patients with atopic dermatitis before and after a single photochemotherapy. Therapy was oral PUVA (30 mg 8-methoxypsoralen, 8MOP plus 5 J/cm²UVA), topical PUVA (0·3% 8MOP plus 200mJ/cm²UVA) or UVB (80mJ/cm²) irradiation. The number of S. aureus on the lesions was significantly reduced, even after a single treatment with all therapies. Reductions (mean± SD) were 69·3 ± 26.9%, 76·3 ± 31·3% and 83·8 ± 18·5%. respectively. Secondly, we investigated the effect of PUVA (0·001% 8MOP plus 10, 20, 30, 40, or 50 mJ/cm²UVA) and UVB (10, 30, 50, or 100 mJ/cm²) irradiation on the proliferation of S. aureus in vitro. PUVA and UVB treatment markedly inhibited the proliferation in a dose-dependent manner. These results seem to indicate the possibility that the antimicrobial effect of UV radiation contributes to successful photochemotherapy in patients with atopic dermatitis.     

Desmoplakin I and II in acantholytic dermatoses: preservation in pemphigus vulgaris and pemphigus erythematosus and dissolution in Hailey-Hailey's disease and Darier's disease

Desmoplakin I and II are important components of the attachment plaque of the desmosome which mediates cell to cell adhesion, in epithelial cells. In this study we used well-characterized antibody against desmoplakin I and II immunohistochemically and immunoelectron microscopically on two cases of pemphigus vulgaris and one case of pemphigus erythematosus and two cases each of Hailey-Hailey's disease and Darier's disease. In the normal human epidermis the desmosomes were demonstrated in a dotted pattern along cell periphery. In pemphigus vulgaris and pemphigus erythematosus acantholytic cells and the perilesional cells exhibited normal dotted pattern along the cell periphery. In Hailey-Hailey's disease and Darier's disease, the dotted pattern is lost in acantholysed and perilesional areas and anti-desmoplakin I + II positive proteins were observed diffusely in the cytoplasm. Immunoelectron microscopical findings correspond to these light microscopical observations. It is concluded that in autoimmune acantholytic disease such as pemphigus vulgaris and pemphigus erythematosus, desmoplakins are intact even in acantholytic cells, whereas in genodermatoses such as vulgaris and pemphigus erythematosus, desmoplakins are intact even in acantholytic cells, whereas in genodermatoses such as Hailey-Hailey's disease and Darier's disease primary or secondary abnormalities abnormalities of desmosomes may be involved in their pathogenesis.     

Iron in finger-nails and in the liver

The mean iron content of finger-nails of 113 apparently normal subjects was found to be 67.6 μg/g dry nail (±43.7). There was no age or sex variation. No relationship was found between the concentration of iron in finger-nails and that stored in the liver.