Metabolism of transforming growth factor-beta in patients receiving hemodialysis especially those with renal osteodystrophy

Ren Fail. 1998 Jan;20(1):135-45. doi: 10.3109/08860229809045096.

Abstract

We evaluated the intraplatelet and plasma levels of transforming growth factor beta (TGF-beta) in patients with or without renal osteodystrophy (ROD) who were undergoing hemodialysis (HD). Intraplatelet and plasma levels of TGF-beta were examined before and after HD, and compared with those from healthy controls. Patients undergoing HD had significantly higher mean intraplatelet levels of TGF-beta before and after HD than did the healthy subjects (22.7 +/- 7.8 and 29.5 +/- 15.8 vs. 18.7 +/- 7.9 ng/10(5) platelets; p < .05). The mean intraplatelet and plasma levels of TGF-beta in patients after HD were significantly increased than those before HD and in healthy subjects (p < .05). Moreover, patients with ROD showed a significantly higher mean intraplatelet and plasma levels of TGF-beta than that without ROD (p < .05). To investigate the effects of TGF-beta on ROD in HD patients, we evaluated such parameters as parathyroid hormone (PTH) and alkaline phosphatase (ALP), which reflect the lesions of ROD. The mean intraplatelet level of TGF-beta was not correlated with either para-meter. Meanwhile, no correlation was observed between the intraplatelet level of TGF-beta and the hematocrit (Hct). Similarly, no correlation was observed between the intraplatelet levels of TGF-beta and the dose of erythropoietin (EPO) administered. These findings indicate that metabolism of TGF-beta occurs during HD and overproduction of TGF-beta may play an important role in the pathogenesis of ROD.

MeSH terms

  • Blood Platelets / metabolism
  • Case-Control Studies
  • Chronic Kidney Disease-Mineral and Bone Disorder / blood*
  • Enzyme-Linked Immunosorbent Assay
  • Erythropoietin / therapeutic use
  • Female
  • Humans
  • Kidney Failure, Chronic / blood*
  • Kidney Failure, Chronic / therapy*
  • Male
  • Middle Aged
  • Recombinant Proteins
  • Renal Dialysis*
  • Transforming Growth Factor beta / blood*

Substances

  • Recombinant Proteins
  • Transforming Growth Factor beta
  • Erythropoietin