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Anakinra and dexamethasone treatment of idarubicin-induced mucositis and diarrhoea in rats.
Basic & Clinical Pharmacology & Toxicology 2023 March 7
Chemotherapy-induced mucositis, characterised by diarrhoea and villous atrophy, is a severe side effect contributing to reduced quality of life and premature death in cancer patients treated with cytostatics. Despite its high incidence, there is no effective supportive therapy available. The main objective of this study was to determine if the anti-inflammatory drugs anakinra and/or dexamethasone - which have different mechanism-of-action - might be used to effectively treat idarubicin-induced mucositis in rats. Mucositis was induced through a single injection with 2 mg/kg idarubicin (with saline as control), followed by daily treatments of anakinra (100 mg/kg/day), dexamethasone (10 mg/kg/day), or both during three days. After 72 hours, jejunal tissue was collected for morphological, apoptotic, and proliferative analyses, and colonic faecal water content and body weight change were determined. The diarrhoea that was induced by idarubicin (from 63.5% to 78.6% water content in faeces) was completely reversed by anakinra alone, and the jejunal villus height reduction by 36% was prevented by a combination of anakinra and dexamethasone. Dexamethasone reduced apoptosis in the jejunal crypts, both alone and in combination with anakinra. These positive effects encourage further investigations into the use of anakinra and dexamethasone as supportive therapies for chemotherapy-induced intestinal mucositis and diarrhoea.
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