Activity of glutamate and malate dehydrogenases in liver and kidneys of rats subjected to multiple exposures of mercuric chloride and sodium selenite

✍ Scribed by Jadwiga Chmielnicka; Elżbieta Komsta-Szumska; Barbara Sul̵kowska

• Publisher: Elsevier Science
• Year: 1978
• Weight: 645 KB
• Volume: 8
• Category: Article
• ISSN: 0006-3061
• DOI: 10.1016/s0006-3061(00)80163-5

✦ Synopsis

Rats were subjected for 2 weeks to separate and combined exposures to mercuric chloride and sodium selenite at doses of 0.5 mg H&g and OS mg Se/kg. The content of mercury, selenium and protein as well as the activities of glutamate dehydrogenase (GLDH) and malate dehydrogenase (MDH) were determined in homogenates, mitochondria and intramitochondrial structures of the exposed animals. It was found that both separate and combined exposures of rats to mercuric chloride and sodium selenite inhiiited GLDH activity and did not affect MDH activity in the examined organs. Mercuryselenium interaction brought about a decrease. in the content of mercury in the intramitochondrial structures of kidneys and an increased acmumulation of both elements in the outer and inner membranes of liver mitochondria. The biochemical mechanism of mercury-selenium interaction is discussed.