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Radiation enteropathy and microbiota

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https://www.readbyqxmd.com/read/27660288/soluble-dietary-fiber-ameliorates-radiation-induced-intestinal-epithelial-to-mesenchymal-transition-and-fibrosis
#1
Jianbo Yang, Chao Ding, Xujie Dai, Tengfei Lv, Tingbing Xie, Tenghui Zhang, Wen Gao, Jianfeng Gong, Weiming Zhu, Ning Li, Jieshou Li
BACKGROUND: Intestinal fibrosis is a late complication of pelvic radiotherapy. Epithelial-to-mesenchymal transition (EMT) plays an important role in tissue fibrosis. The aim of this study was to examine the effect of soluble dietary fiber on radiation-induced intestinal EMT and fibrosis in a mouse model. MATERIALS AND METHODS: Apple pectin (4% wt/wt in drinking water) was administered to wild-type and pVillin-Cre-EGFP transgenic mice with intestinal fibrosis induced by a single dose of abdominal irradiation of 10 Gy...
September 22, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/25206275/bovine-immunoglobulin-protein-isolates-for-the-nutritional-management-of-enteropathy
#2
REVIEW
Bryon W Petschow, Anthony T Blikslager, Eric M Weaver, Joy M Campbell, Javier Polo, Audrey L Shaw, Bruce P Burnett, Gerald L Klein, J Marc Rhoads
The gastrointestinal tract is responsible for a multitude of digestive and immune functions which depend upon the balanced interaction of the intestinal microbiota, diet, gut barrier function, and mucosal immune response. Disruptions in one or more of these factors can lead to intestinal disorders or enteropathies which are characterized by intestinal inflammation, increased gut permeability, and reduced capacity to absorb nutrients. Enteropathy is frequently associated with human immunodeficiency virus (HIV) infection, inflammatory bowel disease, autoimmune enteropathy, radiation enteritis, and irritable bowel syndrome (IBS), where pathologic changes in the intestinal tract lead to abdominal discomfort, bloating, abnormal bowel function (e...
September 7, 2014: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/24599929/microbiota-and-radiation-induced-bowel-toxicity-lessons-from-inflammatory-bowel-disease-for-the-radiation-oncologist
#3
REVIEW
Miguel R Ferreira, Ann Muls, David P Dearnaley, H Jervoise N Andreyev
New gastrointestinal symptoms are frequent after pelvic radiotherapy and can greatly affect the quality of life of cancer survivors. The effect of radiation on the intestinal microbiota, and the clinical implications of a modified microbial balance after radiotherapy are now beginning to emerge. In this Personal View, we show the importance of the microbiota for intestinal homoeostasis, and discuss the similarity between inflammatory bowel disease, which has been extensively researched, and radiation-induced gastrointestinal toxicity...
March 2014: Lancet Oncology
https://www.readbyqxmd.com/read/20572300/small-intestinal-bacterial-overgrowth-syndrome
#4
REVIEW
Jan Bures, Jiri Cyrany, Darina Kohoutova, Miroslav Förstl, Stanislav Rejchrt, Jaroslav Kvetina, Viktor Vorisek, Marcela Kopacova
Human intestinal microbiota create a complex polymicrobial ecology. This is characterised by its high population density, wide diversity and complexity of interaction. Any dysbalance of this complex intestinal microbiome, both qualitative and quantitative, might have serious health consequence for a macro-organism, including small intestinal bacterial overgrowth syndrome (SIBO). SIBO is defined as an increase in the number and/or alteration in the type of bacteria in the upper gastrointestinal tract. There are several endogenous defence mechanisms for preventing bacterial overgrowth: gastric acid secretion, intestinal motility, intact ileo-caecal valve, immunoglobulins within intestinal secretion and bacteriostatic properties of pancreatic and biliary secretion...
June 28, 2010: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/20040865/microbial-influences-on-the-small-intestinal-response-to-radiation-injury
#5
REVIEW
Christopher D Packey, Matthew A Ciorba
PURPOSE OF REVIEW: Injury to the small bowel from ionizing radiation occurs commonly in patients undergoing cancer therapy and less commonly in instances of accidental radiation overexposure. Several lines of evidence now suggest that dynamic interactions between the host's enteric microbiota and innate immune system are important in modulating the intestinal response to radiation. Here, we will review recent developments in the area of acute radiation enteropathy and examine the current state of knowledge regarding the impact of host-microbial interactions in the process...
March 2010: Current Opinion in Gastroenterology
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