Calprotectin protects against experimental colonic inflammation in mice

British Journal of Pharmacology
Carlos ArandaFermín Sánchez de Medina

Abstract

Calprotectin is a heterodimer composed of two myeloid-related proteins, S100A8 and S100A9, that is abundant in neutrophils and monocytes/macrophages. Faecal levels of calprotectin are used routinely to monitor inflammatory bowel disease activity. We aimed to assess the role of calprotectin in intestinal inflammation, using the dextran sulfate sodium model of colitis in mice. Calprotectin was administered (50 or 100 μg·day-1 ) by the intrarectal or by i.p. injection (50 μg·day-1 only). The condition of the mice was characterized by morphological and biochemical methods. Intrarectal calprotectin protected significantly against colitis, as shown by lower levels of macroscopic and microscopic damage, colonic myeloperoxidase activity and decreased expression of TNFα and toll-like receptor 4. IL-17 production by spleen and mesenteric lymph node cells was reduced. Calprotectin had no effect on body weight loss or colonic thickening. There were no effects of calprotectin after i.p. injection. Calprotectin had virtually no effects in control, non-colitic mice. Calprotectin had almost no effect on the colonic microbiota but enhanced barrier function. Treatment of rat IEC18 intestinal epithelial cells in vitro with calprotectin induced ou...Continue Reading

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Citations

Aug 7, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zhe WangMin Chang
Jun 17, 2021·American Journal of Physiology. Gastrointestinal and Liver Physiology·Belén Rivero-GutiérrezOlga Martínez-Augustin
Jun 20, 2021·Gut·Almina JukicTimon E Adolph
Oct 21, 2021·American Journal of Physiology. Gastrointestinal and Liver Physiology·María Arredondo-AmadorFermín Sánchez de Medina

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