HLA class II antigen expression in conjunctival precancerous lesions and squamous cell carcinomas.

Abstract:

PURPOSE:The expression of human leukocyte antigen (HLA) class II molecules on the cell surface is necessary for the presentation of peptide antigens to helper CD4 T lymphocytes of the immune system. We studied the immunoexpression of HLA class II antigen in conjunctival precursor lesions and conjunctival squamous cell carcinomas. METHODS:HLA class II antigen expression was analyzed in 8 conjunctival dysplasias, 6 carcinomas in situ and in 7 conjunctival squamous cell carcinomas, by immunoperoxidase staining with monoclonal antibody to HLA class II antigen on the archival clinical samples. Immunoanalysis was done by a semi quantitative method based on the intensity of staining and the percentage of stained cells. RESULTS:HLA class II antigen immunoexpression was heterogeneous in 8 conjunctival dysplasias and in 6 carcinoma in situ and negative in 7 conjunctival squamous cell carcinomas. CONCLUSIONS:Human leukocyte class II antigen immunoexpression is decreased in conjunctival precancerous and squamous cell carcinomas.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Abhyankar D,Lakshmi SA,Pushparaj V,Biswas J,Krishnakumar S

doi

10.1076/ceyr.27.3.151.16052

subject

Has Abstract

pub_date

2003-09-01 00:00:00

pages

151-5

issue

3

eissn

0271-3683

issn

1460-2202

journal_volume

27

pub_type

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