title: Effect of aging on experimental autoimmune prostatitis: differential kinetics of development.
abstract: We have studied the influence of aging on the kinetics of autoimmune response in Experimental Autoimmune Prostatis (EAP). EAP was induced in 3- and 12-month-old Wistar rats by i.d. immunization with a saline extract of rat male sex accessory glands (RAG), chemically modified, and emulsioned in CFA. After immunization, 12-month-old rats developed a faster and stronger specific DTH response against RAG and mononuclear infiltration in the prostate. The levels of total IgM and IgG against RAG were lower in 12-month-old rats than in 3-month-old rats, with a prevalence of IgG2a, IgG2b, and IgG2c subclasses in both ages. Immunization stimulated slightly the appearance of specific IgG1 to RAG only in 3-month-old rats but in 12-month-old rats there was no specific IgG1 to RAG. On the other hand, normal 12-month-old rats showed higher levels of some natural antibodies and their thymocytes and peripheral lymphocytes had a diminished proliferative capacity compared to 3-month-old rats. These data demonstrated that 12-month-old rats show parameters of an aged immune system and present an exacerbated autoimmune prostatitis compared with 3-month-old rats.
authors.affiliation: Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina.
authors.forename: G
authors.initials: G
authors.lastname: Morón
authors.forename: B
authors.initials: B
authors.lastname: Maletto
authors.forename: A
authors.initials: A
authors.lastname: Rópolo
authors.forename: M C
authors.initials: MC
authors.lastname: Pistoresi-Palencia
mesh_terms: D000375:Aging / Q000276:immunology*; D000818:Animals; D000917:Antibody Formation / Q000276:immunology; D001327:Autoimmune Diseases / Q000209:etiology / Q000276:immunology* / Q000378:metabolism; D005837:Genitalia, Male / Q000276:immunology; D007111:Immunity, Cellular / Q000276:immunology; D007074:Immunoglobulin G / Q000378:metabolism; D007075:Immunoglobulin M / Q000378:metabolism; D008213:Lymphocyte Activation / Q000276:immunology; D008297:Male; D011472:Prostatitis / Q000209:etiology / Q000276:immunology* / Q000378:metabolism; D051381:Rats; D017208:Rats, Wistar; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M