银屑病发病相关免疫机制的研究进展

银屑病是一种常见的以表皮增殖和炎症为特征的红斑鳞屑性慢性炎症性皮肤病。其发病机制尚不清楚,随着对其发病的免疫机制研究,证实银屑病为一种免疫介导的炎症性疾病,涉及机体的固有免疫系统、适应性免疫系统及其相关的细胞因子和趋化因子等。     

寻常型银屑病复发相关因素分析及自我管理干预研究

目的:明确寻常型银屑病相关复发因素,建立科学有效的自我管理模式.方法:收集2017年3月至2018年12月皮肤科门诊就诊的寻常型银屑病复诊患者,填写调查问卷,通过Logistic回归法分析相关影响因素,根据影响因素制定个体化健康教育处方.将复诊的患者随机分为对照组和干预组,分别实施常规健康教育和个体化健康教育处方的临床...     

银屑病免疫学发病机制及相关转基因动物模型研究进展

银屑病是多基因遗传背景下的T细胞介导的免疫性疾病,其病因和发病机制复杂,且极少自然发生于人类以外的其它动物,所以,银屑病在免疫学方面的进展及相关动物模型的建立对于明确疾病的病因和机制以及治疗十分重要.     

中医药治疗银屑病相关免疫机制研究进展

银屑病是以大量银白色鳞屑和Auspitz氏征阳性为特征的免疫介导的炎性皮肤病。传统中医药治疗银屑病疗效确切,尤其是在针对银屑发病机制相关研究方面取得了很大进步。文章就近10余年来中医药治疗银屑病相关免疫机制进行总结,分别从中医药对银屑病患者机体的相关细胞因子,特异性及非特异性免疫系统等方面进行综述。     

银屑病免疫学的研究进展

银屑病是一种基因、环境、精神心理等多种体内外因素导致的慢性炎症性皮肤病,各种免疫细胞特别是各型CD4+辅助性T细胞及其分泌的细胞因子形成复杂的调控网络,调节银屑病的发病及转归,如IL-23/Th17轴、IL-4/Th2轴等信号通路.抗原提呈细胞、自然杀伤细胞等介导的固有免疫和T细胞介导的获得性免疫是维持免疫稳态的基础,综合银屑病相关的免疫细胞、获得性免疫细胞及其信号传导的最新研究成果,进一步阐述银屑病的免疫学发病机制.     

泛发性脓疱性银屑病相关的研究进展

泛发性脓疱性银屑病属于银屑病的一种，在银屑病中大约占有1％，主要表现为脓疱型的发疹，可发生在正常皮肤、红斑或者寻常性银屑病皮损的基础上，常伴有发热、关节痛、白细胞增高、血沉加快和皮肤疼痛等，病情严重、治疗困难、容易复发，严重影响患者的生活质量和生命。它的诱发因素、临床表现、预后、治疗方法及免疫机制目前仍处于研究和探索当中。     

银屑病相关miRNAs表达的研究进展

微RNA(miRNAs)是一种大小约18~25个核苷酸的非编码小分子RNA,具有调控基因表达的作用,参与细胞增殖、分化、凋亡、发育等多种生物学过程,是疾病发生的总"开关"。近年来研究发现多种miRNA在银屑病皮损组织和血浆中有异常表达,是银屑病发生、发展过程中重要的调控因素。本文就这些特异性miRNAs与银屑病发病机制的关系以及在银屑病早期诊断和治疗中的应用做一综述。     

银屑病相关 miRNAs 表达的研究进展

微RNA（miRNAs）是一种大小约18～25个核苷酸的非编码小分子 RNA,具有调控基因表达的作用,参与细胞增殖、分化、凋亡、发育等多种生物学过程,是疾病发生的总“开关”。近年来研究发现多种miRNA在银屑病皮损组织和血浆中有异常表达,是银屑病发生、发展过程中重要的调控因素。本文就这些特异性miRNAs与银屑病发病机制的关系以及在银屑病早期诊断和治疗中的应用做一综述。     

组织常驻记忆性T细胞与银屑病复发的研究进展

银屑病是慢性复发性炎症性皮肤病,经常在原皮损消退的部位复发。组织常驻记忆T细胞(tissue resident memory T cells, TRM)能够长期驻留在皮肤中。近年来许多研究表明TRM是银屑病复发的重要原因,有效地抑制TRM可能是控制银屑病复发的关键。但TRM细胞具有抗损伤和抗凋亡特征,给控制复发带来困难。本文就皮肤TRM的产生、驻留以及TRM与银屑病复发的研究进展进行综述。     

银屑病发病机制中免疫学研究进展

银屑病的发病机制与免疫关系密切,近几年研究倾向于银屑病是Th1/Th17混合途径的免疫性疾病.银屑病的发病中除了有树突细胞、T细胞、角质形成细胞以及Tb1型的细胞因子如白介素12、白介素18等参与外,还有Th17型细胞因子,如白介素23及白介素22等的参与,Th17型免疫反应可能在银屑病发病中起到重要的作用.     

Immunological studies in psoriasis.

The mean values of serum immunoglobulins A, G, M and D levels in 42 psoriasis patients showed no significant difference from those of control subjects. Analysis of the same sera for the presence of antiglobulin antibodies also yielded negative results. Antinuclear factor could be demonstrated in only 4.8% of the cases. The possibility that serum antiglobulins get drained into the lesions making their detection in the serum difficult, is supported by our preliminary findings of focal deposition in the stratum corneum of immune complexes of IgG, IgM and complement in tissue sections of psoriatic lesions from these patients.     

Immunological aspects of psoriasis

We investigated sixteen patients before and after 1 month of PUVA therapy (three times a week) for circulating immune complexes (CIC) and T-cell markers. CIC were detected by the PEG-C4 assay, using a laser nephelometry determination of polyethylene glycol (PEG, 3.5%) precipitated endogenous C4. T cells were evaluated by E rosettes, active E rosettes, anti-HTLA serum and ox EA γ-rosettes. This latter method investigated mainly T cells bearing Fc receptors for IgG (Ty-cells). After 1 month of PUVA-therapy: (a) the cutaneous lesions markedly improved; (b) the mean percentages of E rosettes, active E rosettes, and HTLA bearing cells, depressed before treatment, returned to normal; (c) CIC were found in higher amounts; (d) T γ-cell numbers decreased simultaneously. The improvement of T-cell levels assessed by E rosettes, active E rosettes and HTLA values was correlated with clearing of skin lesions, as previously reported by others. However, the increase of CIC during PUVA therapy, their correlation with T γ-cell decrease, and their possible role in the pathogenic chain of psoriasis remains uncertain.     

Immunological aspects of psoriasis

Sixty patients with psoriasis have been studied for quantitative estimation of serum immunoglobulin A, G and M (60 cases), immunoglobulin E (43 cases), salivary immunoglobulin A (28 cases) and anti-IgG factors in the serum (40 cases). All the data have been statistically compared to a large control group (300 subjects). The results show an increase of the serum IgG and IgA means, an increase of salivary IgA which is correlated with the serum IgA, an increase of IgE levels in some patients and the presence of anti-IgG activity in the serum of 45% of patients with psoriasis. All these findings are statistically significant when compared to controls. These data could be in favour of auto-immune processes in psoriasis.     

Immunological features of psoriasis

Summary Isolated peripheral mononuclear cells of psoriasis patients with different disease characteristics, e. g. head-localised, quiescent guttata, confluent active widespread and erythrodermic, were cultured in a modified Mishell-Dutton system. Using the plaque-forming cell (PFC) assay, single cell antibody formation was studied, and class distribution monitored, adding pokeweed mitogen (PWM), concanavalin A (ConA), methotrexate (MTX) or Ro-109359/31, as well as autologous sera to the culture. PFC-estimation vs. sheep red blood cells (SRBC) and burro red blood cells (BRBC) revealed a distinct suppression of primarily IgG-PFC in some of the PWM-treated patients' cultures; ConA maximally reduced PFC by only 50%, compared to 100% for normal immune cells. Ro-109359/31 reduced mainly IgG-PFC in the co-cultures with PWM or autologous sera. MTX resulted in a reduction of IgG-PFC and IgM-PFC equally. The results were compared with cultured immune cells from normal individuals. The two antigenically different indicators, the partial abolition of ConA induced suppression, broad-based immunoglobulin elevation in the sera, and the mainly IgG-formation hint at the role of polyclonal B-cell activation in the perpetuation of psoriasis, which can be specifically reduced by Ro-109359/31. Suppressor cell dysfunctions remain to be discussed.     

Immunological aspects of psoriasis

Oral administration of 8-methoxypsoralen followed by exposure to a high-intensity longwave ultraviolet treatment system resulted in clearing of atopic eczema in 15 patients. Paired-comparison studies demonstrated that this treatment was superior both to conventional ultraviolet light therapy and to no treatment. Short-term observation suggests that regular therapy is necessary to maintain remission of the disease.     

Immunological aspects of psoriasis

We have investigated lymphocyte subpopulations (six different markers) and T cell functions (mitogen responses and serum thymic factor determination) in twenty patients with psoriasis compared with thirty-five healthy subjects. Normal results were found for B cell markers, but significantly lower numbers of T cells were assessed by E-rosettes and anti HTLA serum. Mitogen responses were significantly higher in psoriasis than in normal subjects of the same age. These findings could be in favour of a T cell subpopulation defect involved in an auto-immune pathogenesis of psoriasis.     

Immunological effects of stress in psoriasis

Background Psychological stress causes phenotypic changes in circulating lymphocytes and is regarded as an important trigger of the Th1‐polarized inflammatory skin disease psoriasis. Objective To study the effects of psychological stress on immunological parameters, i.e. membrane molecules relevant to the pathophysiology of psoriasis, especially cutaneous lymphocyte‐associated antigens (CLA) involved in T and natural killer (NK) cells homing in on the skin. Methods The severity of psoriasis was assessed in patients using the Psoriasis Area and Severity Index. Patients with psoriasis (n = 15) and healthy volunteers (n = 15) were exposed to brief psychological stress in the laboratory. In vitro analyses were conducted 1 h before, immediately following and 1 h after stress exposure. Peripheral T‐ and NK‐cell subsets including CD8+ T lymphocytes, CLA+ lymphocytes and lymphocyte function‐associated antigen type 1 (LFA‐1)+ lymphocytes were analysed by flow cytometry. Results We found a significant stress‐induced increase of CD3+ T lymphocytes in patients with psoriasis only. Analyses of T‐cell subsets revealed that this increase was observable for cytotoxic CD8+ T lymphocytes and CLA+ CD3+ lymphocytes. The total number of circulating NK cells (CD16+, CD56+) increased immediately after stress in both groups whereas only patients with psoriasis showed a significant increase in CLA+ NK cells. Conclusions A higher stress‐induced increase of CLA+ T and CLA+ NK cells in the circulation of patients with psoriasis might point to an increased ability of T and NK cells in the presence of psoriasis to home in on the skin during mental stress. Further studies are needed to verify these relationships in more detail and to investigate the time point at which these cells accumulate within lesional skin, and whether or not psychotherapy improves the quality of life of patients with psoriasis and influences stress‐dependent parameters.     

银屑病共患疾病的临床研究进展

早在1995年,银屑病和其他非皮肤科疾病的关系已经引起人们的关注,而在过去的10年中,越来越多的银屑病共患疾病,包括心血管系统疾病、代谢综合征、非酒精性脂肪肝、炎症性肠病、癌症、焦虑与抑郁的发现,证明银屑病是一种系统性疾病,改变了传统银屑病的治疗模式［1-2］。认识银屑病的共患疾病,早期筛查危险因素,并采取多学科合作的综合管理措施,对优化银屑病的治疗管理有重要意义。本文就目前对银屑病常见共患疾病的认识和临床综合治疗的进展做一综述……