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Bulletin of environmental contamination and toxicology

Effects of exposure to cadmium on some endocrine parameters in tilapia, Oreochromis niloticus.


PMID 23184017

Abstract

The cadmium impact on interrenal and thyroid functions was assessed in tilapia, Oreochromis niloticus. Fish were exposed to 25 mgxa0L(-1) of CdCl(2) during 24, 48, and 96xa0h. Exposure to 24 and 48xa0h induced a significant increase in plasma cortisol levels, whereas at 96xa0h no differences were found. A significant and sustained decrease in plasma T3 concentrations, and an over time increase in plasma glucose, was also found in exposed fish. The results of the current study show that acute exposures to sublethal cadmium concentrations induce changes in endocrine status and carbohydrate metabolism in O. niloticus.

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