title: T-cell activation modified by parathyroid hormone (PTH) in patients with end-stage renal disease.
abstract: We studied the effect of parathyroid hormone (PTH) on the proliferation of T cells from patients with end-stage renal disease (ESRD) (n = 16) and normal subjects (n = 20). In patients with ESRD, T-cell proliferation expressed as stimulation index (SI) was significantly decreased from 99.2 +/- 31.2 to 46.3 +/- 10.8, when 10 ng/ml of recombinant PTH (rPTH) was added in vitro. The reduction of SI with rPTH was dose dependent. However, in normal subjects, the SI was increased from 56.2 +/- 13.6 to 67.9 +/- 16.5 (p < 0.01) by addition of rPTH. These findings were also shown by allo or specific antigen-induced T-cell stimulation. When T cells from normal subjects were pretreated with 10 ng/ml of PTH, with 100 mg/dl of urea or with a condition of pH 7.0, the effect of rPTH was changed to decrease the T-cell proliferation induced by anti-CD3 antibody. These data suggested that uremic state, including hyperparathyroidism, changed the response of T cells against PTH.
authors.affiliation: Second Department of Internal Medicine, Nippon Medical School, Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kaneko
authors.forename: E
authors.initials: E
authors.lastname: Osono
authors.forename: N
authors.initials: N
authors.lastname: Hayama
authors.forename: Y
authors.initials: Y
authors.lastname: Lino
authors.forename: A
authors.initials: A
authors.lastname: Terashi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D007676:Kidney Failure, Chronic / Q000276:immunology*; D007963:Leukocytes, Mononuclear / Q000276:immunology; D008213:Lymphocyte Activation / Q000187:drug effects*; D008297:Male; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000097:blood / Q000494:pharmacology*; D011994:Recombinant Proteins / Q000494:pharmacology; D013601:T-Lymphocytes / Q000187:drug effects* / Q000276:immunology; D014508:Urea / Q000494:pharmacology; D014511:Uremia / Q000276:immunology
chemical_list: D010281:Parathyroid Hormone; D011994:Recombinant Proteins; D014508:Urea