褪黑素在热打击诱导细胞凋亡中可能的保护作用

摘要

在中暑发病过程中,热是最根本的致伤原因.多项动物和细胞实验证实,高热可直接诱导组织损伤和细胞死亡,根据遭受热打击的程度不同,细胞可激活凋亡信号或直接坏死.一般高热打击大多是激活了细胞凋亡信号,诱导细胞凋亡.因此,对于中暑发病过程中组织细胞的损伤形式,目前一般认为以凋亡为主.近年来针对热应激分子生物学研究表明,热在广阔的范围内调节着细胞各项生理活动,参与细胞内信号转导过程.褪黑素及其代谢物是广谱抗氧化剂和自由基清除剂,它们在不同病理生理情况下调节多种分子途径,例如炎症、增殖、凋亡和转移.本文总结褪黑素及热打击对细胞凋亡影响的相关研究,评估了褪黑素对中暑发病机制的可能保护作用,以期为临床提供新的治疗思路.%During the onset of heat stroke, heat is the most fundamental cause of injury. It has been demonstrated in a number of animal and cell experiments that hyperthermia can directly induce tissue damage and cell death, and cells can activate apoptotic signals or direct necrosis depending on the extent of heat stress. In general, high heat stress activates apoptotic signals and induce apoptosis. Therefore, the form of damage of tissue cells during the onset of heat stroke is currently considered to be mainly apoptosis. In recent years, it has been found that the heat stress molecular biology research regulates the physiological activities of cells in a wide range and participates in the intracellular signal transduction process. Melatonin and its metabolites are broad-spectrum antioxidants and free radical scavengers that regulate a variety of molecular pathways, such as inflammation, proliferation, apoptosis, and metastasis, under different pathophysiological conditions. This article summarized the research on the effects of melatonin and heat shock on apoptosis, and evaluated the possible protective effects of melatonin on the pathogenesis of heat stroke, and provided new therapeutic ideas for the clinic.