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Changes of opioid contents in brain and plasma through the hibernation bout cycle of ground squrriels

Ye Zucheng, Cai Yipeng

College of Life Sciences, Peking University. Beijing 100871

Abstract

The #beta#-EP content in hypothalamus and pituitary during the entrance phase were increased and further deepened during deep hibernation, whereas in hippocampus and plasma the tendency of the changes of #beta#-EP content took place in an opposite direction, i.e.being lowered down from the euthermia level upon entering the entrance and deep hibernation phase. The content on pons and medulla showed little change through the bout. The contents of MEK were increased during entrance and lowered when entering into deep hibernation to different extent in different brain areas, being most significant change has taken place in hippocampus.

Key words: #beta#-endophin;Met-enkephalin;Hibernation bout;Ground squrriels;RIA

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Citing This Article：

Ye Zucheng, Cai Yipeng. Changes of opioid contents in brain and plasma through the hibernation bout cycle of ground squrriels. Acta Physiol Sin 1995; 47 (6): (in Chinese with English abstract).