Endothelins.

Blood vessels Pub Date : 1990-01-01
E E Anggård, R M Botting, J R Vane
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Abstract

The endothelins (ETs) are a family of newly discovered peptides with potent vasoconstrictor properties. They were first discovered in cultured endothelial cells but ET expression has since been found in many other tissues such as brain and kidney. They are peptides with 21 amino acids formed by hydrolytic cleavage of a larger peptide, big ET. Release of ETs from cultured endothelial cells is modulated by a variety of chemical and physical stimuli and as no storage sites have been identified it is suggested that endothelin release is regulated at the level of transcription or translation. Both big ET and ET-1 are found circulating in the blood. The levels are elevated in shock, myocardial infarction and kidney failure indicative of enhanced formation in these diseases. The literature now abounds with reports on actions of the ETs in vitro and in vivo. The vasoconstrictor properties are powerful and long-lasting. Several studies also show a mitogenic effect, indicating a possible trophic role. It is likely that in the next few years the development of inhibitors of endothelin synthesis and/or action will be of importance in unravelling the role of the ETs.

内皮素。
内皮素(ETs)是一类新发现的具有强效血管收缩特性的肽。它们最初是在培养的内皮细胞中发现的,但后来在许多其他组织如脑和肾中也发现了ET的表达。它们是由21个氨基酸组成的肽,由一个更大的肽(大ET)水解裂解形成。培养的内皮细胞的ET释放受多种化学和物理刺激调节,由于没有确定储存位点,因此内皮素的释放在转录或翻译水平上受到调节。大ET和ET-1都存在于血液循环中。在休克、心肌梗死和肾衰竭时,这些水平升高,表明这些疾病的形成增强。现在的文献大量报道了et在体外和体内的作用。血管收缩剂的特性是强大和持久的。几项研究也显示有丝分裂作用,表明可能的营养作用。很可能在未来几年内,内皮素合成和/或作用抑制剂的发展将对揭示内皮素的作用具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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