Document 0122 DOCN M94A0122 TI Phenotypes of lymphocytes infiltrating non-small cell lung cancer tissues and its variation with histological types of cancer. DT 9412 AU Yoshino I; Yano T; Murata M; Miyamoto M; Ishida T; Sugimachi K; Kimura G; Nomoto K; Department of Virology, Kyushu University, Japan. SO Lung Cancer. 1993 Oct;10(1-2):13-9. Unique Identifier : AIDSLINE MED/94348838 AB We investigated surface markers of lymphocytes infiltrating four different histological non-small cell lung cancer tissues obtained at surgery and the corresponding peripheral blood lymphocytes (PBL) of 40 clinical cases, who had undergone no prior anti-cancer treatment, by flowcytometry. In estimation of the mean proportion of each lymphocyte subset, a paired Wilcoxon test revealed that tumor-infiltrating lymphocytes (TIL) exhibited significantly higher values of CD3+ cells (P < 0.05), CD8+ cells (P < 0.05) and CD20+ cells (P < 0.01), and lower value of CD16+cells (P < 0.05), as compared with those in PBL. The Spearman test revealed that none of the values of surface markers in TIL statistically correlated with those in the corresponding PBL (r < 0.6, P > 0.05). Although there was no significant difference between the mean CD4/CD8 ratio of total TIL and that of PBL, TIL of 12 patients with squamous cell carcinoma almost always showed lower values of CD4/CD8 ratio than those in PBL (P < 0.05), while the CD4/CD8 ratio was similar between TIL and PBL in adenocarcinoma. These results suggest that TIL of lung cancers represent specific immunological responses, whose characteristic depend on the histological types of lung cancers. DE Carcinoma, Non-Small-Cell Lung/*IMMUNOLOGY CD4-CD8 Ratio Human Immunophenotyping Lung Neoplasms/*IMMUNOLOGY Lymphocytes, Tumor-Infiltrating/*IMMUNOLOGY T-Lymphocyte Subsets/IMMUNOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).