title: A controlled study of lymphocyte subsets in rheumatoid arthritis.
abstract: The purpose of this study was to determine if patients with rheumatoid arthritis (RA) exhibited unique patterns of peripheral blood lymphocyte (PBL) subsets in comparison to patients with osteoarthritis (OA) and, further, if such differences related to disease activity or nondisease factors. Data from 63 RA patients and 47 OA patients revealed that the RA patients had lower absolute numbers of CD2+ and CD4+ lymphocytes. Small differences also were found in selected B-cell subsets and subsets of lymphocytes expressing CD16 and/or CD57 antigens. Further analysis revealed that these differences were due primarily to the effects of cytotoxic medications in the RA group. However, there were also alterations in some subsets independent of medication groups. PBL subsets in RA patients did not relate to chronic low-dose prednisone or measures of disease activity. This study demonstrated the need to control carefully for variables such as age and medication in immunophenotypic investigations of RA.
authors.affiliation: Department of Pathology, University of Missouri School of Medicine, Harry S. Truman Memorial Veterans Hospital, Columbia 65203.
authors.forename: C W
authors.initials: CW
authors.lastname: Caldwell
authors.forename: A J
authors.initials: AJ
authors.lastname: Bridges
authors.forename: S E
authors.initials: SE
authors.lastname: Walker
authors.forename: K L
authors.initials: KL
authors.lastname: Smarr
authors.forename: R J
authors.initials: RJ
authors.lastname: Reichert
authors.forename: S K
authors.initials: SK
authors.lastname: Anderson
authors.forename: J E
authors.initials: JE
authors.lastname: Hewett
authors.forename: J C
authors.initials: JC
authors.lastname: Parker
mesh_terms: D000375:Aging / Q000502:physiology; D000970:Antineoplastic Agents / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000097:blood* / Q000473:pathology; D006046:Gold / Q000627:therapeutic use; D006801:Humans; D006886:Hydroxychloroquine / Q000627:therapeutic use; D016131:Lymphocyte Subsets / Q000166:cytology* / Q000187:drug effects; D008297:Male; D010003:Osteoarthritis / Q000097:blood / Q000473:pathology; D010396:Penicillamine / Q000627:therapeutic use; D011241:Prednisone / Q000494:pharmacology; D011446:Prospective Studies
chemical_list: D000970:Antineoplastic Agents; D006886:Hydroxychloroquine; D006046:Gold; D010396:Penicillamine; D011241:Prednisone