title: Tissue level lymphocyte subpopulations in donovanosis.
abstract: Total T-, B-, T4-, and T8-lymphocyte populations were estimated in tissue sections of ulcers from 22 donovanosis patients, comprising 17 ulcerogranulomatous, four hypertrophic, and one sclerotic variants, using monoclonal antibodies and immunohistochemical technique (PAP). T- and B-lymphocytic infiltrations in the tissues were almost identical, without any significant difference in ulcerogranulomatous and hypertrophic variants. The T4:T8 ratio in ulcerogranulomatous variants, however, was 1.41, which was significantly higher than that of hypertrophic variants (1.28), indicating a greater cell-mediated immune response in the former than in the latter. This is substantiated by the documentation of a paucity of Donovan bodies, both in the tissue smear and slow (overnight) Giemsa-stained tissue sections, in the ulcerogranulomatous variant.
authors.affiliation: Department of Dermatology and Venereology, Maulana Azad Medical College, New Delhi, India.
authors.forename: V N
authors.initials: VN
authors.lastname: Sehgal
authors.forename: M M
authors.initials: MM
authors.lastname: Gupta
authors.forename: V K
authors.initials: VK
authors.lastname: Jain
mesh_terms: D000368:Aged; D001402:B-Lymphocytes; D016516:CD4-CD8 Ratio; D006100:Granuloma Inguinale / Q000473:pathology*; D006801:Humans; D006984:Hypertrophy; D007958:Leukocyte Count; D016131:Lymphocyte Subsets / Q000276:immunology; D008875:Middle Aged; D012883:Skin Ulcer / Q000473:pathology; D013601:T-Lymphocytes