Abstract
A series of studies were carried out to determine the effect of chronic alcohol administration on cellular and humoral immunity in the rat. Alcohol-treated rats received an alcohol liquid formula diet for 3 months, and this uniformly resulted in the development of a fatty liver. In alcohol-treated rats there was a delay in antibody production to both typhoid H and B. abortus antigens following a primary immunization. The peak titers obtained, however, were not significantly different from those of the control animals. The secondary response to typhoid H antigen was not affected. The expression of cutaneous delayed hypersensitivity to a potent skin sensitizing chemical, 2, 4-dinitrofluorobenzene, was also depressed in alcohol-treated rats. Animals receiving alcohol also had markedly atrophic thymuses and small spleens. The normal thymuses and adrenal glands found in control animals treated with ACTH injections indicate that the changes were not due to hyperactivity of the adrenal cortex in a stressful situation. It is postulated that the deleterious effects of alcohol on the immune system of rats may be due to alteration in either reticuloendothelial or thymic function.
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