Document 0524 DOCN M9480524 TI Demonstration of human T lymphotropic virus type I (HTLV-I)-specific T cell responses from seronegative and polymerase chain reaction-negative persons exposed to HTLV-I. DT 9410 AU Nishimura M; Kermode AG; Clerici M; Shearer GM; Berzofsky JA; Uchiyama T; Wiktor SZ; Pate E; Maloney B; Manns A; et al; Neuroimmunology Branch, National Institute of Neurological; Disorders and Stroke, Bethesda, MD 20892. SO J Infect Dis. 1994 Aug;170(2):334-8. Unique Identifier : AIDSLINE MED/94308598 AB Human T lymphotropic virus type I (HTLV-I) is a human retrovirus etiologically linked to adult T cell leukemia and the progressive chronic neurologic disease HTLV-I-associated myelopathy/tropical spastic paraparesis. Described is a method that measures the production of interleukin-2 from HTLV-I synthetic peptide-stimulated peripheral blood lymphocytes (PBL) of HTLV-I-infected persons. The peptides correspond to immunogenic regions of the HTLV-I Env and Tax proteins. Significantly, this assay demonstrated T cell responses to these HTLV-I peptides from coded PBL samples in 7 of 19 HTLV-I-seronegative polymerase chain reaction-negative persons known to have been exposed to HTLV-I but in none of 16 matched controls without risk factors for exposure (P = .007). The implications of this finding are discussed. DE Adult Amino Acid Sequence Child, Preschool Cohort Studies Female Gene Products, env/CHEMISTRY/IMMUNOLOGY Gene Products, tax/CHEMISTRY/IMMUNOLOGY Human HTLV-I/*IMMUNOLOGY HTLV-I Antigens/CHEMISTRY/IMMUNOLOGY HTLV-I Infections/*TRANSMISSION Infant Interleukin-2/*BIOSYNTHESIS Molecular Sequence Data Polymerase Chain Reaction Support, Non-U.S. Gov't T-Lymphocytes/*IMMUNOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).