Changes in glutathione S-transferase activity and total protein contents of labeo rohita

Abstract

This work was performed to evaluate glutathione S-transferase (GST) activity and total protein contents (TPCs) in tissues viz. brain, gills, kidney, heart, muscle and liver of Labeo rohita kept under sub-lethal dose (4.13 μgL-1) of chlorpyrifos. Fish was kept under chlorpyrifos stress for two months and samples were collected on weekly basis. It was noted that GST level varied significantly with duration. The GST level was raised in first 28 days after that it was dropped off up to 56-day. The trend of GST in fish tissues was observed as muscle < liver. However, TPCs in selected tissues of stressed fish was lower significantly as compared to control.