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Article Publish Status: FREE
Abstract Title:

Dietary Oat Bran Reduces Systemic Inflammation in Mice Subjected to Pelvic Irradiation.

Abstract Source:

Nutrients. 2020 Jul 22 ;12(8). Epub 2020 Jul 22. PMID: 32707913

Abstract Author(s):

Piyush Patel, Dilip Kumar Malipatlolla, Sravani Devarakonda, Cecilia Bull, Ana Rascón, Margareta Nyman, Andrea Stringer, Valentina Tremaroli, Gunnar Steineck, Fei Sjöberg

Article Affiliation:

Piyush Patel

Abstract:

Patients undergoing radiotherapy to treat pelvic-organ cancer are commonly advised to follow a restricted fiber diet. However, reducing dietary fiber may promote gastrointestinal inflammation, eventually leading to deteriorated intestinal health. The goal of this study was to evaluate the influence of dietary fiber on radiation-induced inflammation. C57BL/6J male mice were fed a High-oat bran diet (15% fiber) or a No-fiber diet (0% fiber) and were either irradiated (32 Gy delivered in four fractions) to the colorectal region or only sedated (controls). The dietary intervention started at 2 weeks before irradiation and lasted for 1, 6, and 18 weeks after irradiation, at which time points mice were sacrificed and their serum samples were assayed for 23 cytokines and chemokines. Our analyses show that irradiation increased the serum cytokine levels at all the time points analyzed. The No-fiber irradiated mice had significantly higher levels of pro-inflammatory cytokines than the High-oat irradiated mice at all time points. The results indicate that a fiber-rich oat bran diet reduces the intensity of radiation-induced inflammation, both at an early and late stage. Based on the results, it seems that the advice to follow a low-fiber diet during radiotherapy may increase the risk of decreased intestinal health in cancer survivors.

Study Type : Animal Study

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