Acidic stress-ER stress axis for blunted activation of NF-κB in mesothelial cells exposed to peritoneal dialysis fluid

Nephrology, Dialysis, Transplantation : Official Publication of the European Dialysis and Transplant Association - European Renal Association
Hisashi JohnoMasanori Kitamura

Abstract

Bacterial peritonitis is a frequent complication in patients on peritoneal dialysis (PD). We previously reported that PD fluid (PDF) suppressed expression of monocyte chemoattractant protein 1 (MCP-1) in mesothelial cells in vitro and in vivo, which was ascribed to the suppression of nuclear factor-κB (NF-κB). To elucidate molecular mechanisms underlying this effect, we tested a role of endoplasmic reticulum (ER) stress. Mesothelial cells and other cell types were exposed to acidic stress, and induction of the unfolded protein response was examined. Peritoneal induction of ER stress was also tested in mice exposed to acidic and neutralized PDF. Activation of NF-κB and expression of MCP-1 by tumour necrosis factor-α were evaluated in mesothelial cells under acidic and ER stress conditions. Peritoneal expression of MCP-1 and infiltration of monocytes were compared in lipopolysaccharide (LPS)-treated mice between normal and ER stress conditions. PDF, but not neutralized PDF, caused ER stress in the peritoneum. In vitro, acidic stress, but not metabolic and osmotic stress, induced ER stress in mesothelial cells and other cell types and suppressed activation of NF-κB and NF-κB-dependent MCP-1 induction. This effect was reproducible ...Continue Reading

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Citations

Apr 5, 2013·Seminars in Immunopathology·Masanori Kitamura
Jul 21, 2015·Laboratory Investigation; a Journal of Technical Methods and Pathology·Hyun-Soo ShinDuk-Hee Kang
Jan 31, 2017·International Journal of Molecular Sciences·Lixue DongLi V Yang
Oct 28, 2015·Chemical Communications : Chem Comm·Samit GuhaBradley D Smith
Jul 17, 2019·Pigment Cell & Melanoma Research·Ines Böhme, Anja Bosserhoff
Mar 30, 2017·Peritoneal Dialysis International : Journal of the International Society for Peritoneal Dialysis·Karima FarhatFrans J van Ittersum

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