title: CD4(+) memory T cells with high CD26 surface expression are enriched for Th1 markers and correlate with clinical severity of multiple sclerosis.
abstract: An aberrant immune activation is believed to be important in the pathogenesis of multiple sclerosis (MS). Expression of CD4(+) T lymphocyte surface molecules indicative of immune activation and effector functions has been correlated with disease severity and activity. CD4(+) CD45R0(+) CD26(high) memory T lymphocytes contained the high levels of markers of Th1, activation, and effector functions and cell counts of this subset correlated with MS disease severity. This subset had lower expression of PD-1, CCR4, and L-selectin in MS than in controls. These changes were only partially normalised by treatment with interferon-beta. We point to this subset as a putative target for immunological monitoring of MS disease activity and of treatment efficacy.
authors.affiliation: Danish Multiple Sclerosis Research Center, Department of Neurology, Section 2082, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, DK-2100 Copenhagen, Denmark. martin.krakauer@dadlnet.dk
authors.forename: M
authors.initials: M
authors.lastname: Krakauer
authors.forename: P S
authors.initials: PS
authors.lastname: Sorensen
authors.forename: F
authors.initials: F
authors.lastname: Sellebjerg
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000378:metabolism; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D018819:Dipeptidyl Peptidase 4 / Q000378:metabolism*; D016903:Drug Monitoring / Q000379:methods; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007155:Immunologic Factors / Q000627:therapeutic use*; D007156:Immunologic Memory / Q000276:immunology*; D016130:Immunophenotyping; D016899:Interferon-beta / Q000627:therapeutic use*; D017493:Leukocyte Common Antigens / Q000378:metabolism; D008213:Lymphocyte Activation / Q000276:immunology; D008297:Male; D020529:Multiple Sclerosis, Relapsing-Remitting / Q000188:drug therapy* / Q000276:immunology* / Q000503:physiopathology; D012720:Severity of Illness Index; D018417:Th1 Cells / Q000276:immunology / Q000378:metabolism
chemical_list: D015415:Biomarkers; D007155:Immunologic Factors; D016899:Interferon-beta; D017493:Leukocyte Common Antigens; D018819:Dipeptidyl Peptidase 4