Immunoregulation in Disseminated Histoplasmosis: Characterization of the Surface Phenotype of Splenic Suppressor T Lymphocytes

Overview

Journal Infect Immun

Publisher American Society for Microbiology

Specialty Allergy & Immunology

Date 1982 Sep 1

PMID 6182106

Citations 9

Authors

S R Watson

W E Bullock

Affiliations

Soon will be listed here.

Abstract

C57BL/6 and C3H/HeJ mice were infected intravenously with 6 X 10(5) yeast-phase Histoplasma capsulatum organisms. After 1 week, splenocytes from both mouse strains showed diminished antibody responses to sheep erythrocytes in vitro; these cells also were able to suppress the response of normal syngeneic cells. Passage of splenocytes from infected mice through a nylon wool column yielded a population enriched for T cells that exerted suppressor activity, although to a smaller extent than did unfractionated cells. Treatment of the T-cell-enriched population from both strains of mice with either anti-Thy 1.2 or anti-Ly 2 and complement resulted in a loss of this immunosuppressive ability. In addition, anti-I-Jk antiserum was effective in ablating the suppressive effect of C3H/HeJ nylon wool-passed spleen cells. The conclusion drawn from these experiments is that the T cells from H. capsulatum-infected animals which are capable of modulating the in vitro plaque-forming cell response to sheep erythrocytes bear Ly 2 and I-J determinants on their surfaces.

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