Abstract
In the present investigation, the most commonly used pharmaceutical drug Ibuprofen (IB) was exposed to an Indian major carp Cirrhinus mrigala under static bioassay method to estimate its toxicological effects for a period of 35 days. The median lethal concentration (LC 50) of IB to the fish C. mrigala for 24h was found to be 142ppm. In sublethal treatment (1/10th of LC 50 24h value, 14.2ppm), a significant decrease in erythrocyte (RBC), mean cellular hemoglobin concentration (MCHC) and plasma protein levels were observed throughout the study period when compare to that of their respective controls. In contrast, haemoglobin (Hb), hematocrit (Hct), mean cellular volume (MCV), mean cellular hemoglobin (MCH), leucocyte (WBC), plasma glucose and alanine transaminase (ALT) levels were increased in this study period. On the other hand, a mixed trend was noticed in aspartate aminotransaminase (AST) enzyme activity. Alterations of these parameters can be effectively used as potential biomarkers in monitoring of IB toxicity in the aquatic organisms. However, more detailed studies on these specific biomarkers are needed to assess the impacts of human pharmaceutical drugs in the field of pharmacotoxicology and aquatic toxicology.
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