title: Synthesis of hyaluronic acid by human peritoneal mesothelial cells: effect of cytokines and dialysate.
abstract: OBJECTIVE
  To assess effects of the inflammatory cytokines (IL-1-beta, TNF-alpha, TGF-beta 1) and dialysate effluent on synthesis of hyaluronic acid by human peritoneal mesothelial cells (HMC) in in vitro culture.
  
  
  METHODS
  Dialysate effluent was collected after the overnight dwell of Dianeal 1.5% from patients during CAPD training. HMC were obtained from omentum from nonuremic donors or were harvested from the dialysate effluent from CAPD patients. Synthesis of hyaluronic acid was studied on monolayers of HMC, which were deprived of serum 48 hours prior to experiment. Effects of cytokines were tested in a medium with low serum concentration (0.1%) or in medium mixed (1:1 v/v) with the autologous dialysate. Hyaluronic acid level in medium was measured with radioimmunoassay.
  
  
  RESULTS
  Cytokines enhanced synthesis of hyaluronic acid by HMC, and the strongest effect was induced by IL-1. Effluent dialysate stimulates synthesis of hyaluronic acid stronger than 10% FCS. Effluent dialysate and IL-1 synergistically enhance synthesis of hyaluronic acid by HMC.
  
  
  CONCLUSIONS
  Effluent dialysate from CAPD patients stimulates production of hyaluronic acid by HMC and acts synergistically with cytokines.
authors.affiliation: Department of Pathophysiology, Medical School Poznan, Poland.
authors.forename: A
authors.initials: A
authors.lastname: Breborowicz
authors.forename: K
authors.initials: K
authors.lastname: Korybalska
authors.forename: A
authors.initials: A
authors.lastname: Grzybowski
authors.forename: K
authors.initials: K
authors.lastname: Wieczorowska-Tobis
authors.forename: L
authors.initials: L
authors.lastname: Martis
authors.forename: D G
authors.initials: DG
authors.lastname: Oreopoulos
mesh_terms: D002478:Cells, Cultured; D016207:Cytokines / Q000494:pharmacology*; D015314:Dialysis Solutions / Q000494:pharmacology*; D004848:Epithelium / Q000378:metabolism; D006801:Humans; D006820:Hyaluronic Acid / Q000096:biosynthesis*; D007375:Interleukin-1 / Q000494:pharmacology; D010531:Peritoneal Dialysis, Continuous Ambulatory; D010537:Peritoneum / Q000166:cytology / Q000378:metabolism*; D011863:Radioimmunoassay; D016212:Transforming Growth Factor beta / Q000494:pharmacology; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology
chemical_list: D016207:Cytokines; D015314:Dialysis Solutions; D007375:Interleukin-1; D016212:Transforming Growth Factor beta; D014409:Tumor Necrosis Factor-alpha; D006820:Hyaluronic Acid