IMMUNOHISTOCHEMICAL AND MORPHOLOGICAL STUDY OF GASTRIC AND INTESTINAL CARCINOMAS
Abstract
FROZEN SECTIONS OF 23 GASTRIC AND 28 LARGE INTENSIVE CARCINOMAS WERE STUDIED IMMUNOHISTOCHEMICALLY USING MONOCLONAL ANTIBODIES AGAINST B1, T4, T8 LYMPHOCYTES, MONOCYTES /HISTIOCYTES, T-ZONE HISTIOCYTES, HLA-DR, CALLA, K1 67 AND IL-2 AND TRANSFERIN (OCT-9) RECEPTORS. NO SIGNIFICANT CORRELATION WAS FOUND BETWEEN THE EXPRESSION OF THESE ANTIGEN WITH THE TYPE, STAGE OR DEGREE OF DIFFERENTIATION OF TUMORS. THE HIGHER RATE OF HLA-DR ANTIGEN EXPRESSION IN GASTRIC TUMORS AND THE SIGNIFICANT HETEROGENEITY OF EXPRESSION MAYBE IS A CONSEQUENCE OF PHENOTYPIC INSTABILITY OF CANCER CELLS. A MINIMAL CORRELATION WAS FOUND BETWEEN THE HLA-DR EXPRESSION AND THE INFLAMMATORY CELLS. THE INDEX K1 67 WAS NOT FOUNDANY CORRELATION WITH PROGNOSIS THESE TYPES OF CARCINOMAS. CALLA EXPRESSION ININTESTINAL METAPLASIA COULD BE CONSIDERED AS INDEX OF BETTER PROGNOSIS OF THIS CONDITION.
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