[放射性同位素钾-40对动物机体正常发育的意义]

[The significance of the radioactive isotope potassium-40 for the normal development of the animal organism].

作者信息

Kuzin A M, Krymskaia V P, Ishmuratov B Kh, Mozgovoĭ E G

出版信息

Radiats Biol Radioecol. 1994 Jan-Feb;34(1):73-8.

Abstract

21-day-old rats subjected to nourishing by KCl (20-30 mg per day) without radioactive isotope 40K. Besides the decrease of 40K content in animal tissue (30-50%) a reducing of body weight was obtained. In the second set of experiments in the lead (9 cm thick) chamber with low (20 times) background radiation the trustworthy decrease of young mouse development was observed under the simultaneous reducing other components of background radiation (radon, products of its disintegration, gamma, beta radiation, cosmic radiation). Possible mechanisms of necessity of 40K natural concentration for the normal development of the animal organism are discussed.

摘要

对21日龄的大鼠每日用氯化钾（20 - 30毫克）进行喂养，且不使用放射性同位素40K。除了动物组织中40K含量降低（30 - 50%）外，还观察到体重减轻。在第二组实验中，在铅（9厘米厚）室内，背景辐射较低（低20倍），同时降低其他背景辐射成分（氡、其衰变产物、伽马射线、贝塔射线、宇宙射线）时，观察到幼鼠发育明显减缓。文中讨论了动物机体正常发育所需的40K自然浓度的可能机制。