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Human & Experimental Toxicology
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Effects of Combined Exposure to Aluminium and Ethanol on Aluminium Body Burden and some Neuronal, Hepatic and Haematopoietic Biochemical Variables in the Rat

S.J.S. Flora

Defence Research & Development Establishment, Gwalior, India

Mamta Dhawan

S.K. Tandon

Industrial Toxicology Research Centre, Post Box 80, Lucknow-226 001, India

The effects of the daily administration of aluminium (25 mg kg-1, orally), ethanol (10% v/v, in drinking water) or both to adult rats, for 6 weeks, on the amount of aluminium present in the tissues and the functioning of brain biogenic amines, hepatic and serum transaminases and some haematopoietic variables were investigated.

Ethanol alone was seen to inhibit the activity of {delta}-aminolevulinic acid dehydratase (ALAD), while aluminium alone elevated the activity of blood ALAD. However, aluminium and ethanol combined produced a more pronounced inhibition of blood ALAD and hepatic glutamic pyruvic transminase (GPT) than either aluminium or ethanol alone. Simultaneous exposure to aluminium and ethanol also produced a significant elevation in urinary {delta}-aminolevulinic acid (ALA) blood zinc protoporphyrin (ZPP), serum glutamic oxaloacetic transaminase (GOT) and brain homovanillic acid (HVA), and a depletion in brain dopamine (DA) and 5-hydroxytryptamine (5-HT) levels, when compared to rats given aluminium alone. The concentration of aluminium in the blood and liver was significantly higher in rats exposed to both aluminium and ethanol than in those exposed to aluminium alone. Thus the consumption of alcohol may increase the rat's susceptability to certain effects of aluminium.

Human & Experimental Toxicology, Vol. 10, No. 1, 45-48 (1991)
DOI: 10.1177/096032719101000108
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