Comparative study of the chronic toxicity of two organotin compounds on albino rats

ABSTRACT

This study was conducted on 360 adult albino rats of both sexes to evaluatesome of the chronic toxicity of two organotin compounds [TBTO and MBTCL]. Therats were grouped into two control groups orally received the vehicles and twoother groups orally received 1/10 of oral LD50 of TBTO and MBTCL. Monthly forthree months, biochemical and histopathological investigations were done. Tenrats were taken monthly from each group to make their chromosomal patterns. As regards nephrotoxicity, both compounds produced remarkable progressivehistopathological changes with no significant increase in blood urea andcreatinine. The hepatotoxin of both compounds were nearly the same throughthe study [biochemically and histopathologically]. Also, both compounds causeprogressive histopathological changes of almost the same degree in lungs,intestine, brain and heart. Regarding the cytogenetic study, TBTO was foundto be more toxic than MBTCL. This was deduced from the very highlysignificant increase in the number of cells with structural chromosomalanomalies and the total number of structural anomalies in the TBTO treatedgroup as compared with MBTCL treated group. It can be concluded that both TBTOand MBTCL were potentially toxic to the liver, kidneys and lungs. They hadalso mild to moderate toxic effects on intestine, brain and heart. Bothcompounds were highly genotoxic to albino rats. TBTO having more genotoxicpotential. Most of the toxic effects of both compounds were progressive