Studies on esterases levels in various tissues of Uromastix Hardwickii during activity and hibernation.

Esterases, acetylcholinesterase and cholinesterase activities were determined in various tissues of Uromastix hardwickkii during hibernation and activity. 1. The protein concentration was significantly reduced during hibernation. 2. The esterase activity in all the tissues was found to be significantly reduced during hibernation. 3. Acetylcholinesterase activity was significantly increased in all the tissues. 4. There was no significant difference in the cholinesterase activity duriing the two periods. 5. The specific activities of all the enzymes were found to be significantly increased during hibernation.