Abstract
Long-term peritoneal dialysis causes peritoneal fibrosis, and previous reports suggest that inflammation plays a critical role in peritoneal fibrosis. Chondroitin sulfate (CS) suppresses the inflammatory response by preventing activation of nuclear factor (NF)-κB. We examined the effect of CS on the peritoneal fibrosis induced by chlorhexidine gluconate (CG) in mice. CS or water was administered daily. We divided mice into four groups: administered vehicle and water (control); administered vehicle and CS (CS); administered CG and water (CG); and administered CG and CS (CG+CS). Morphologic changes were assessed by Masson’s trichrome staining. Inflammation- and fibrosis-associated factors were assessed by immunohistochemistry. Activation of NF-κB was examined by southwestern histochemistry. CS administration suppressed the progression of submesothelial thickening. The numbers of inflammation- and fibrosis-associated factors -positive cells were significantly decreased in the CG+CS group, compared to the CG group. Based on SWH, the CG+CS group contained significantly fewer NF-κB-activated cells than the CG group. Our results indicate that CS suppresses peritoneal fibrosis via suppression of NF-κB activation. These results suggest that CS has therapeutic potential for peritoneal fibrosis.
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Acknowledgments
This work was supported by Grants from the Japanese Association of Dialysis Physicians (No. 25067). We would like to thank Ms. Ryoko Yamamoto and Ms. Ayako Matsuo for the excellent experimental assistance.
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Abe, S., Obata, Y., Oka, S. et al. Chondroitin sulfate prevents peritoneal fibrosis in mice by suppressing NF-κB activation. Med Mol Morphol 49, 144–153 (2016). https://doi.org/10.1007/s00795-016-0133-8
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DOI: https://doi.org/10.1007/s00795-016-0133-8