Maria C E Andersen1,2, Malene W Johansen1,2, Thomas Nissen2, Anders B Nexoe2,3, Gunvor I Madsen4, Grith L Sorensen2, Uffe Holmskov2, Anders Schlosser2, Jesper B Moeller2, Steffen Husby1,5, Mathias Rathe6,7. 1. Hans Christian Andersen Children's Hospital, Odense University Hospital, Sdr. Boulevard 29, DK-5000, Odense C, Denmark. 2. Department of Cancer and Inflammation Research, University of Southern Denmark, Odense, Denmark. 3. Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark. 4. Department of Pathology, Odense University Hospital, Odense, Denmark. 5. Department of Clinical Research, University of Southern Denmark, Odense, Denmark. 6. Hans Christian Andersen Children's Hospital, Odense University Hospital, Sdr. Boulevard 29, DK-5000, Odense C, Denmark. mathias.rathe@rsyd.dk. 7. Department of Clinical Research, University of Southern Denmark, Odense, Denmark. mathias.rathe@rsyd.dk.
Abstract
PURPOSE: Chemotherapy-induced gastrointestinal toxicity is a common adverse event during chemotherapeutic treatment. No uniformly applicable strategies exist to predict, prevent, or treat gastrointestinal toxicity. Thus, a goal of mucositis research is to identify targets for therapeutic interventions and individualized risk prediction. Fibrinogen C domain containing 1 (FIBCD1) is a transmembrane protein expressed in human intestinal epithelial cells with functions in the innate immune system. Previous observations have shown that FIBCD1 ameliorates dextran sulfate sodium (DSS)-induced intestinal inflammation in vivo. We evaluated the effect of FIBCD1 in a murine model of chemotherapy-induced gastrointestinal toxicity and inflammation. METHODS:Transgenic (Tg) mice overexpressing FIBCD1 in the intestinal epithelium (Fibcd1Tg) and wild-type (WT) littermates (C57BL/6N) were randomized to receive an intraperitoneal injection of doxorubicin 20 mg/kg or saline and were terminated 2 or 7 days after the injection. Gastrointestinal toxicity was evaluated by weight change, intestinal length, villus height/crypt depth, and histological mucositis score. Expression of inflammatory markers (IL-6, IL-1β, and Tnfα) was measured by quantitative real-time PCR in intestinal tissue samples. RESULTS: Following doxorubicin treatment, WT mice exhibited an increased weight loss compared with Tg littermates (p < 0.001). No differences between genotypes were seen in mucositis score, intestinal length, villus height/crypt depth, or IL-6, IL-1β, and Tnfα expression. CONCLUSION: Our findings suggest that FIBCD1 could ameliorate chemotherapy-induced gastrointestinal toxicity by reducing weight loss; however, the mechanism of this possible protective effect remains to be defined warranting additional investigations.
RCT Entities:
PURPOSE: Chemotherapy-induced gastrointestinal toxicity is a common adverse event during chemotherapeutic treatment. No uniformly applicable strategies exist to predict, prevent, or treat gastrointestinal toxicity. Thus, a goal of mucositis research is to identify targets for therapeutic interventions and individualized risk prediction. Fibrinogen C domain containing 1 (FIBCD1) is a transmembrane protein expressed in human intestinal epithelial cells with functions in the innate immune system. Previous observations have shown that FIBCD1 ameliorates dextran sulfate sodium (DSS)-induced intestinal inflammation in vivo. We evaluated the effect of FIBCD1 in a murine model of chemotherapy-induced gastrointestinal toxicity and inflammation. METHODS: Transgenic (Tg) mice overexpressing FIBCD1 in the intestinal epithelium (Fibcd1Tg) and wild-type (WT) littermates (C57BL/6N) were randomized to receive an intraperitoneal injection of doxorubicin 20 mg/kg or saline and were terminated 2 or 7 days after the injection. Gastrointestinal toxicity was evaluated by weight change, intestinal length, villus height/crypt depth, and histological mucositis score. Expression of inflammatory markers (IL-6, IL-1β, and Tnfα) was measured by quantitative real-time PCR in intestinal tissue samples. RESULTS: Following doxorubicin treatment, WT mice exhibited an increased weight loss compared with Tg littermates (p < 0.001). No differences between genotypes were seen in mucositis score, intestinal length, villus height/crypt depth, or IL-6, IL-1β, and Tnfα expression. CONCLUSION: Our findings suggest that FIBCD1 could ameliorate chemotherapy-induced gastrointestinal toxicity by reducing weight loss; however, the mechanism of this possible protective effect remains to be defined warranting additional investigations.
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