Hemorrhagic activity of the vascular apoptosis-inducing proteins VAP1 and VAP2 from Crotalus atrox

作者:Kikushima Eiichi; Nakamura Shiho; Oshima Yasunori; Shibuya Tomoko; Miao Jun Ying; Hayashi Hiroshi; Nikai Toshiaki; Araki Satohiko*
来源:Toxicon, 2008, 52(4): 589-593.
DOI:10.1016/j.toxicon.2008.06.027

摘要

Vascular apoptosis-inducing proteins (VAPs) from hemorrhagic snake venom are apoptosis-inducing toxins that target vascular endothelial cells. We now show that VAP1 and VAP2 from Crotalus atrox have hemorrhagic activity in mouse skin following intradermal injection. Following intravenous injection, VAP2 induced hemorrhage in the lung, intestine and kidney. Although the hemorrhagic activity was relatively weak, these apoptosis toxins may play a role in the complex mechanism of snake venom-induced hemorrhage.