Abstract
Rats given a diet of sucrose and vitamins for 3 weeks or more develop a tolerance to mercuric chloride greater than that of chow-fed rats. Comparison of several enzyme systems (tricarboxylic acid cycle, succinic dehydrogenase, cytochrome oxidase, α-ketoglutarate dehydrogenase, alkaline phosphatase, cathepsins and ß-glucuronidase) in chow-fed and sucrose-fed rats indicated no significant differences in activities. After 3 mg HgCl2/kg i.v., notable differences in the extent of inhibition of tricarboxylic acid enzyme systems were observed. Twenty-four hours after such an injection, kidneys of chow-fed rats were seriously hampered in their ability to perform biological energy transformations. Oxidation and phosphorylation by sucrose-fed rat kidneys were considerably less inhibited.
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