银屑病患者白介素6和肿瘤坏死因子α的测定

Detection of Interleukin 6 and Tumor Necrosis Factor alpha in Patients with Psoriasis Vulgaris

用生物活性测定法对４９例寻常型银屑病患者和２０例正常人外周血单一核细胞（ＰＢＭＣ）体外产生白介素６（ＩＬ６）和肿瘤坏死因子α（ＴＮＦα）的能力及其血清水平进行了测定，并对其相关性进行了分析。结果：患者ＰＢＭＣ产生ＩＬ６、ＴＮＦα的能力及其血清水平均高于正常人；ＰＢＭＣ产生ＩＬ６、ＴＮＦα的能力与其血清水平呈正相关；血清ＩＬ６与ＴＮＦα水平呈正相关。提示：患者的细胞免疫功能存在失调；血清ＩＬ６、ＴＮＦα水平升高可能与ＰＢＭＣ产生ＩＬ６、ＴＮＦα能力增强有关；ＩＬ６、ＴＮＦα在银屑病发病中可能存在协同作用。

The activities of interleukin 6 (IL 6) and tumor necrosis factor alpha (TNFα) produced by peripheral blood mononuclear cells (PBMCs) in vitro and their relevant levels in sera were measured in 49 patients with psoriasis vulgaris (PV) and in 20 normal controls using bioassay. The relationship between them was also analysed. The results showed that in PV patients the activites of IL 6 and TNFα produced by PBMCs and their serum levels were higher than those in healthy controls. There was a positive linear correlation between the activites in vitro and relevant levels in sera, and a positive linear correlation between serum levels of IL 6 and TNFα. These results indicate that there is dysfunction of cellular immune of PBMCs in PV patients. The increase of serum levels of IL 6 and TNFα may be related to the increased activity of PBMCs, and there may be a synergic action between IL 6 and TNFα in the pathogenesis of psoriasis.