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Effect of Ethanol on Cadmium Uptake and Metabolism of Zinc and Copper in Rats Exposed to Cadmium¹

Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh-160012, India

Effects of chronic administration of cadmium and ethanol, alone as well as in combination, on the uptake of cadmium and its interaction with other essential trace elements in various tissues of adult rats were investigated. Cadmium given in combination with ethanol led to a pronounced increase in cadmium absorption and accumulation in all the tissues studied relative to both non-exposed controls and rats treated with cadmium alone. Both cadmium and ethanol exhibited specific effects on copper and zinc levels of the tissues. These effects often were significantly altered when the animals were co-exposed to cadmium and ethanol. The results suggested that although both cadmium and ethanol individually pose a hazard to essential trace metal homeostasis of various organs, co-exposure can pose a major threat since animals exposed to ethanol absorb much more cadmium than their unexposed counterparts.

KEY WORDS: • cadmium • ethanol • copper • zinc • rats

¹ Financial assistance provided by the Indian Council of Medical Research, New Delhi, is duly acknowledged.

Manuscript received 24 May 1989. Revision accepted 23 July 1990.

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