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. 1983 Mar;51(3):421–429.

T cell subsets in leprosy lesions: in situ characterization using monoclonal antibodies.

R B Narayanan, L K Bhutani, A K Sharma, I Nath
PMCID: PMC1536769  PMID: 6342880

Abstract

Cryostat sections of dermal lesions from 30 untreated leprosy patients were studied by indirect immunofluorescence using monoclonal antibodies defining T cell subsets and Ia like antigens. Most lymphocytes in leprosy lesions were positive for OKT3 and Ia like antigens indicating thereby the presence of activated T cells. Maximal numbers of these cells were seen in localized paucibacillary tuberculoid leprosy lesions in close association with epithelioid cells. A decline in their numbers was observed over the leprosy spectrum with a marked reduction in disseminated, multi-bacillary, lepromatous leprosy where only scattered OKT3+ cells were visualized. OKT4 and OKT8 positive cells defining T cell subsets, were frequently found within the OKT3+ lymphocytes throughout the leprosy spectrum. The ratio of OKT4+/OKT8+ cells ranged from 1.2 to 5.0 in tuberculoid and from 0.2 to 1.0 in lepromatous lesions. Macrophages in the granulomas stained intensely with anti-Ia antisera. Ia like antigens were expressed to the same degree on macrophages with or without intracellular acid fast bacilli.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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