蛇毒の酵素化学的研究-1-数種蛇毒の長期常温保存における各種活性の変化について

概要

論文の詳細を見る
Venom samples were collected from several poisonous snakes, such as Bungarus multicinctus, Trimeresurus gramineus, Trimeresurus mucrosquamatus, Trimeresurus flavoviridis, and Agkistrodon acutus, and stored in a desiccator at room temperature for 25 to 31 years. Then they were compared with fresh venoms obtained from the same species as to their lethal, hemorrhagic, and enzymologic activities.Of the venoms of the five different snakes, the venom of A. acutus was proved to be generally stable in all respects. The venom of T. flavoviridis, in contrast, was the least in all these activities and showed a tendency to diminish progressively in activity on standing.Except the venom of B. multicinctus stored at usual temperature over 31 years, all the venom samples showed a remarkably stable 5'-nucleotidase activity, which was observed to have hardly diminished during storage over a quarter of a century. NADase and ATPase followed 5'-nucleotidase in this respect.A substantial decrease occurred in the L-amino acid oxidase activity of snake venoms on standing, indicating a considerable lability of venoms in this regard. The venoms also showed a tendency for their glycerophosphatase and hemorrhagic activities to decrease in association with the length of preservation at room temperature. All the venoms were also noticed to lose their lethal activity or neurotoxicity gradually when preserved for a long time. These results suggest a relative lability of venoms as to causing deaths.The findings mentioned above indicate that the stability of enzyme proteins of the venom varies in degree with the species of snake; that is, different venoms showed different rates of diminution in enzymologic activity on standing for a long time.There were no species of snakes which had any clearly noticeable venom activity that would show a significant decrease in correlation with the diminution of lethal activity.

蛇毒の酵素化学的研究-1-数種蛇毒の長期常温保存における各種活性の変化について

スポンサーリンク

概要

著者

関連論文

スポンサーリンク