Abstract
The influence of gender on the effects of cocaine (5 or 40 mg/kg) on immune function of sexually immature (35-day-old) C57BL/6J mice was assessed. The proliferation of T cells in thymus and spleen stimulated with phytohemagglutinin (PHA) and concanavalin-A(Con-A) was determined by 3H thymidine incorporation 24 hours after cocaine injections. The drug produced a dose-dependent reduction (25-51%) of Con-A and PHA-stimulated T cell proliferation in thymus from both male and female mice. Additionally, the impairment occurred at a lower cocaine dose for female than for male mice when the T cells were challenged with PHA. Under the experimental conditions, cocaine did not alter weights or cell numbers of thymus and spleen or T cell proliferation in spleen.
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