偏执型精神分裂症外周血IL-1β、TNF-α和酪氨酸羟化酶的mRNA表达水平

目的检测偏执型精神分裂症患者白介素-1β(IL-1β)、肿瘤坏死因子-α(TNF-α)和酪氨酸羟化酶(TH)的基因表达水平,探讨偏执型精神分裂症的外周神经免疫机制.方法采用RT-PCR和半定量技术,分别检测39例偏执型精神分裂症患者和30例正常对照外周血单个核细胞IL-1β、TNF-α和TH的基因表达水平.结果显示病例组的IL-1β、TNF-α、TH基因表达水平均显著高于正常对照组(P＜0.01).且对照组IL-1β和TNF-α基因表达水平显著相关(r=0.847,P＜0.01);IL-1β和TH基因表达水平相关性较为显著(r=0.666,P＜0.01).病例组只有IL-1β和TNF-α基因表达水平表现为显著的相关(r=0.942,P＜0.01).结论偏执型精神分裂症患者可能存在致炎性细胞因子和儿茶酚胺类神经递质的过度表达;儿茶酚胺类神经递质和致炎性细胞因子的基因表达之间可能具有一种交互机制,而偏执型精神分裂症患者的这种交互机制发生了紊乱.

The mRNA expression levels of IL-1β,TNF-α and tyrosine hydroxylase in peripheral blood of paranoid schizophrenic patients

AIM: To investigate the gene expression levels of interleukin-1beta (IL-1beta), tumour necrosis factor-alpha (TNF-alpha) and tyrosine hydroxylase (TH) in peripheral blood of paranoid schizophrenic patients, and explore the neuroimmunological mechanism of paranoid schizophrenia. METHODS: The mRNA expression levels of IL-1beta, TNF-alpha and TH in the peripheral blood of 39 paranoid schizophrenic patients and 30 normal controls were measured with RT-PCR and semi-quantitative technique. RESULTS: The mRNA expression levels of IL-1beta, TNF-alpha and TH was higher in paranoid schizophrenic patients than those in normal controls (P<0.01). The correlation between the gene expression levels of IL-1beta and TH was found in normal controls (r=0.666, P<0.01), not in paranoid schizophrenic patients (P>0.05); and the correlation between the gene expression levels of IL-1beta and TNF-alpha was significant in all groups (r=0.847 for normal controls and 0.942 for patients, P<0.01, respectively). CONCLUSION: Pro-inflammation cytokines and catecholamines have been demonstrated to be overexpressed in the peripheral blood of paranoid schizophrenic patients. And the correlation between catecholamines and pro-inflammation cytokines, which exists in the controls, is broken in paranoid schizophrenic patients.