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American Journal of Clinical Nutrition, Vol 32, 1691-1699, Copyright © 1979 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Cell-mediated cytotoxicity and humoral immune response in ascorbic acid- deficient guinea pigs

LE Anthony, CG Kurahara and KB Taylor

Guinea pigs were divided into three dietary groups: ascorbic-acid deficient, pair-fed, and ad libitum control. Two weeks later guinea pigs were immunized intradermally with 5 x 10(8) chicken erythrocytes in Freund's complete adjuvant. Hemagglutinating antibody titers to chicken erythrocytes 2 weeks after immunization were comparable in all three dietary groups. In vitro 51Cr release from labeled chicken erythrocyte target cells incubated with lymphoid cells from spleens of ascorbic acid-deficient guinea pigs was significantly less than with spleen cells from pair-fed and ad libitum control guinea pigs. The percentage of splenic lymphoid cells that formed rosettes with rabbit erythrocytes, a T cell marker, was the same in all three dietary groups. The defect of ascorbic acid deficiency may reflect an impairment of T lymphocytes function in cell-mediated cytotoxicity or a change in number or function of another cell type.




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Copyright © 1979 by The American Society for Nutrition