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  • Title: Bacterial peritonitis and beta-2 microglobulin (B2M) production by peritoneal macrophages (PM0) in CAPD patients.
    Author: Carozzi S, Nasini MG, Schelotto C, Caviglia PM, Canepa M, Zanin T, Cantaluppi A, Salit M.
    Journal: Adv Perit Dial; 1990; 6():106-9. PubMed ID: 1982784.
    Abstract:
    To evaluate the role of bacterial peritonitis in peritoneal macrophage (PMO) Beta-2 Microglobulin (B2M) production and its relationship with PMO Interleukin-1 (IL-1) and Leukotriene B4 (LTB4) release we analyzed in 20 CAPD patients (10 with peritonitis): 1. in vivo plasma and peritoneal dialysis effluent (PDE) B2M, IL-1 and LTB4 levels; 2. in vitro B2M, IL-1 and LTB4 release by PMO. Values were compared with those seen in the plasma or with peripheral blood monocytes of 30 hemodialysis (HD) patients (10 treated with Cuprophan-CU-, 10 with Polyacrylonitrile - PAN, and 10 with Cellulose Acetate - CA). Results showed that in CAPD patients with bacterial peritonitis B2M, IL-1 and LTB4 concentrations in the PDE were significantly higher than those seen in CAPD patients without peritonitis or in the plasma of HD patients treated with PAN or CA, but were similar to those seen in HD patients treated with CU. At the same time, in vitro, PMO from CAPD patients with bacterial peritonitis produced more B2M, IL-1 and LTB4 than did PMO from CAPD patients without peritonitis or peripheral blood monocytes from HD patients treated with PAN or CA. We conclude that in CAPD patients bacterial peritonitis is able to induce PMO B2M production, probably via a cytokine-mediated process, which may be analogous to what occurs with peripheral blood monocytes of HD patients treated with CU.
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