Document 0699 DOCN M9550699 TI T cell abnormalities in mixed connective tissue disease complicated with Klinefelter's syndrome. DT 9505 AU Ishihara K; Yoshimura M; Nakao H; Kanakura Y; Kanayama Y; Matsuzawa Y; Second Department of Internal Medicine, Osaka University Medical; School, Suita. SO Intern Med. 1994 Nov;33(11):714-7. Unique Identifier : AIDSLINE MED/95152159 AB We report a 28-year-old Japanese with Klinefelter's syndrome who developed mixed connective disease (MCTD) and Sjogren syndrome. Previously being well, he presented with Raynaud's phenomenon, dry eye, fever and polyarthralgia. Clinical examinations revealed anti-nRNP autoantibody, leukopenia and lung fibrosis. Then he was found to have Klinefelter's syndrome. Flow cytometric analysis showed a relative increase of peripheral CD8+ T lymphocytes carrying either HLA-DR or CD57. Lymphocyte IL-2 production induced in vitro by concanavalin A was decreased. Such T cell abnormalities may be implicated in the development of autoimmune disease in Klinefelter's syndrome. DE Adult Antigens, CD/IMMUNOLOGY Case Report CD8-Positive T-Lymphocytes/*IMMUNOLOGY Flow Cytometry Human HLA-DR Antigens/IMMUNOLOGY Klinefelter's Syndrome/*COMPLICATIONS/IMMUNOLOGY Lymphocyte Transformation/IMMUNOLOGY Male Mixed Connective Tissue Disease/*COMPLICATIONS/IMMUNOLOGY Sjogren's Syndrome/COMPLICATIONS/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).