title: Deficiency of suppressor-inducer (CD4+CD45RA+) T cells in autism.
abstract: CD4+ cells are a heterogenous population of lymphocytes including at least two distinct subpopulations: CD45RA+ cells, inducers of suppressor T cells and CDw29+ cells, inducers of helper function for antibody production. To investigate the possibility that immune abnormalities in autism may involve abnormal distribution of these helper subpopulations, monoclonal antibodies were used in flow cytometric analysis to characterize peripheral blood lymphocytes of 36 subjects with autism. The autistic subjects as compared to a group of 35 healthy age-matched subjects had a significantly reduced number of lymphocytes, a decreased number of CD2+ T cells and reduced numbers of CD4+ and CD4+CD45RA+ lymphocytes. The numbers of B (CD20+) cells, suppressor T (CD8+) cells, inducers of helper function (CD4+CDw29+) and natural killer (CD56+) cells were not altered in the autistic subjects. Our results suggest that an alteration in the suppressor-inducer T-cell subset is associated with autism.
authors: Developmental Center for Handicapped Persons, Utah State University, Logan 84322.
authors: R P
authors: RP
authors: Warren
authors: L J
authors: LJ
authors: Yonk
authors: R A
authors: RA
authors: Burger
authors: P
authors: P
authors: Cole
authors: J D
authors: JD
authors: Odell
authors: W L
authors: WL
authors: Warren
authors: E
authors: E
authors: White
authors: V K
authors: VK
authors: Singh
mesh_terms: D000293:Adolescent; D000328:Adult; D000911:Antibodies, Monoclonal; D015703:Antigens, CD / Q000032:analysis; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D001321:Autistic Disorder / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D002452:Cell Count; D002648:Child; D002675:Child, Preschool; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000150:complications / Q000276:immunology*; D008297:Male; D013601:T-Lymphocytes / Q000276:immunology; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology*; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte