垂体中叶素的生物学功能研究进展
2016-10-19潘琪刘井瑞高志棣邵纬
潘琪 刘井瑞 高志棣 邵纬
[摘要] 垂体中叶素(IMD)是一种具有多种生物学功能的新型生物活性肽类,其在人体各系统具有重要生物学功能,在心血管系统疾病中通過降低体内氧化应激水平从而减轻损伤而产生的强大保护作用;在肾脏、肺脏中具有抑制炎症介质、保护血管内皮细胞的重要作用;以及通过eNOS/NO途径,减轻高肺血流性肺动脉高压和肺血管结构重构的形成;在神经系统IMD/AMD2可以促进体内多种激素的释放;IMD对血糖和胃肠运动也具有一定的调节作用;在肿瘤疾病方面发现IMD在体外可以促进人乳腺癌MCF-7细胞的增殖等重要生物学作用,为其作为临床重要诊断手段及治疗药物提供理论依据。
[关键词] 垂体中叶素;生物学功能;进展;
[中图分类号] R34 [文献标识码] A [文章编号] 1673-7210(2016)02(c)-0046-04
Advances in the research on the biological function of intermedin
PAN Qi1 LIU Jingrui2 GAO Zhidi2 SHAO Wei2
1.Department of General Surgery, the Ninth People's Hospital of Qingdao City, Shandong Province, Qingdao 266002, China; 2. Department of General Surgery, Qingdao Haici Medical group, Shandong Province, Qingdao 266002, China; 3. Department of Oncology, Qingdao Haici Medical group, Shandong Province, Qingdao 266002, China
[Abstract] Intermedin (IMD) is a new type of bioactive peptides with many biological functions. It has important biological function in human body system: in the cardiovascular system disease, IMD can reduce the level of oxidative stress to ease the damage caused by the strong protective effect. In the kidney and lung it is in the role of inhibition of inflammatory mediators, and it protect vascular endothelial cells. It reduce the formation of pulmonary hypertension and pulmonary vascular structural remodeling through eNOS/NO pathway. In the nervous system IMD/AMD2 can promote the release of a variety of hormones, IMD can adjust blood glucose and gastrointestinal movement. It also has a certain role in tumor disease, IMD can promote the proliferation of human breast cancer cells, which provides theoretical basis for the clinical diagnosis and treatment of it.
[Key words] Intermedin; Biological function; Progress
垂体中叶素(Intermedin,IMD)是一种具有多种生物学功能的新型生物活性肽类,而且也是CGRP家族成员之一 。比如在心血管系统周围性注入IMD时可以降低周围性血压,而中枢性注入IMD可以明显的升高血压和激动交感神经。由于其在生物特点的各个方面与肾上腺髓质素(adrenomedullin,ADM)具有很多相似的地方,故又把垂体中叶素当作 ADM2[1],由于其生物学作用多种多样,涉及到生物体的多个系统,故本文就垂体中叶素作一综述。
1 IMD/AMD2的生物学结构和功能
1.1 IMD/AMD2的生物学结构
降钙素(CT)是一种与钙代谢相关的激素,发现的时间已经很久远。在1983年,大鼠降钙素基因(CT)植入特性组织后产生32个氨基酸的rCT生物活性肽和37个氨基酸的raCGRP生物活性肽。……
