Age-related responses of hepatic ATPases to starvation and cold stress in male garden lizards |
| |
Authors: | BS Jena BK Patnaik |
| |
Institution: | Department of Zoology, Berhampur University, Berhampur-760 007, Orissa, India |
| |
Abstract: | Hepatic Na+-K+-ATPase and Mg2+-ATPase activities of male green lizards declined during the maturation phase (juvenile to 1-year-old) and stabilized thereafter. On the other hand, the Ca2+-ATPase activity of the liver declined during the later half of the life span (1-year-old to 2–4-year-old). Starvation stress induced a decline in hepatic Na+-K+-ATPase and Mg2+-ATPase activities of juvenile lizards and caused an increase in 1-year-old and 2–4-year-old counterparts. The Ca2+-ATPase activity declined only in starved 1-year-old lizards. Following cold stress, the hepatic Na+-K+-ATPase activity of juvenile lizards showed a higher degree of decline than 2–4-year-old counterparts. The Mg2+-ATPase activity declined in cold-stressed juvenile lizards, but the parameter was elevated in similarly treated 1-year-old lizards. On the other hand, the increase in Ca2+-ATPase activity in response to cold stress was confined only to 2–4-year-old lizards. |
| |
Keywords: | Lizard Aging Starvation Cold stress Liver Na+-K+-ATPase Mg2+-ATPase Ca2+-ATPase |
本文献已被 ScienceDirect 等数据库收录! |
|