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Glucose-based peritoneal dialysis solution suppresses adiponectin synthesis through oxidative stress in an experimental model of peritoneal dialysis

Title
Glucose-based peritoneal dialysis solution suppresses adiponectin synthesis through oxidative stress in an experimental model of peritoneal dialysis
Authors
Huh J.Y.Seo E.-Y.Lee H.B.Ha H.
Ewha Authors
하헌주
SCOPUS Author ID
하헌주scopus
Issue Date
2012
Journal Title
Peritoneal Dialysis International
ISSN
0896-8608JCR Link
Citation
vol. 32, no. 1, pp. 20 - 28
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Objective: Accumulation of visceral fat is one of the major risk factors for the development of cardiovascular disease in peritoneal dialysis (PD) patients. Adiponectin, an adipokine commonly regarded as a negative indicator of metabolic disease, is reported to be downregulated in its gene level in end-stage renal disease patients. Since excessive fat deposit is involved in increased reactive oxygen species (ROS), PD solution (PDS) may contribute to ROS production, resulting in dysregulation of adiponectin. In this study, we tested our hypothesis that oxidative stress induced by PDS may play a role in the regulation of adiponectin. Methods: Commercial PDS containing 3.86% glucose (20 - 30 mL) was administered to SD rats for 12 weeks with and without N-acetylcysteine (NAC; 10 mmol/L). ELISA was used to quantify adiponectin in plasma and spent dialysate. For in vitro studies, fully differentiated 3T3-L1 adipocytes and adipocytes isolated from abdominal fat were treated with a high glucose solution, PDS, and H 2O 2. Adiponectin levels in the conditioned media were measured by ELISA and immunoblot assays. The mRNA levels of adiponectin in mature adipocytes were examined using real-time RT-PCR. Results: The levels of adiponectin in plasma and spent dialysate were significantly downregulated by PDS and this effect was suppressed by NAC. In 3T3-L1 adipocytes, adiponectin secretion was inhibited by 50 mmol/L glucose, PDS diluted 2-fold, and H 2O 2 (200 μmol/L). In addition, H 2O 2 downregulated expression of adiponectin mRNA and secretion of adiponectin oligomer complexes. Conclusions: Our data suggest that ROS induced by con-ventional glucose-based PDS may contribute to pathophysi-ological changes in abdominal fat and downregulate adiponectin secreted from adipocytes during long-term PD. © 2012 International Society for Peritoneal Dialysis.
DOI
10.3747/pdi.2009.00228
Appears in Collections:
약학대학 > 약학과 > Journal papers
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