Hiroyuki Inagawa1,2,3, Toshiyuki Saika4, Naoki Nishiyama4, Takashi Nisizawa5, Chie Kohchi6,2,5, Maya Uenobe7, Gen-Ichiro Soma6,2,3. 1. Control of Innate Immunity, Technology Research Association, Kagawa, Japan PXS07205@nifty.ne.jp. 2. Faculty of Medicine, Kagawa University, Kagawa, Japan. 3. Research Institute for Healthy Living, Niigata University of Pharmacy and Applied Life Sciences, Niigata, Japan. 4. Toyo Rice Corp., Wakayama, Japan. 5. Macrophi Inc., Kagawa, Japan. 6. Control of Innate Immunity, Technology Research Association, Kagawa, Japan. 7. Nagoya University Economics, Aichi, Japan.
Abstract
BACKGROUND/AIM: A decrease in gastrointestinal motility causing weakened lipopolysaccharide (LPS) - toll-like receptor (TLR)4 signaling along with a decline in the number of enteric bacteria is known to be a cause of constipation due to the administration of antibiotics. A new type of brown rice with its wax layer removed, resulting in quick-cooking and tasty product, contains 100-times more LPS than polished white rice. In this study, the improvement effect on constipation due to intake of dewaxed brown rice was examined. MATERIALS AND METHODS: Dewaxed brown rice was prepared at Toyo Rice from brown rice. Mice were given powdered feed to which powdered rice containing 0-50% of dewaxed brown rice was added. Antibiotics were administered for 10 or 27 days in drinking water containing vancomycin, metronidazole and neomycin. LPS, used as a control, was freely provided in drinking water. The defecation frequency, stool weight per hour and body weight were determined on the last day. RESULTS: Although the 10-day administration of antibiotics reduced the stool weight per hour to half, the dewaxed brown rice and LPS groups showed a trend towards improvement at a level comparable to the group receiving no antibiotics. The body weight significantly decreased after the 27-day administration of antibiotics but was improved in the 50% dewaxed brown rice group at a level comparable to the group receiving no antibiotics. Though the defecation frequency and wet and dry stool weights per hour were reduced by as much as 50% in the group receiving antibiotics, a significant improvement in constipation was observed in the 50% dewaxed brown rice group. CONCLUSION: As the improvement effect of dewaxed brown rice on body weight loss and constipation caused by the long-term administration of antibiotics has been confirmed in animal experimentation, the introduction of dewaxed brown rice as a staple food to patients under long-term antibiotic treatment may improve constipation. Copyright
BACKGROUND/AIM: A decrease in gastrointestinal motility causing weakened lipopolysaccharide (LPS) - toll-like receptor (TLR)4 signaling along with a decline in the number of enteric bacteria is known to be a cause of constipation due to the administration of antibiotics. A new type of brown rice with its wax layer removed, resulting in quick-cooking and tasty product, contains 100-times more LPS than polished white rice. In this study, the improvement effect on constipation due to intake of dewaxed brown rice was examined. MATERIALS AND METHODS: Dewaxed brown rice was prepared at Toyo Rice from brown rice. Mice were given powdered feed to which powdered rice containing 0-50% of dewaxed brown rice was added. Antibiotics were administered for 10 or 27 days in drinking water containing vancomycin, metronidazole and neomycin. LPS, used as a control, was freely provided in drinking water. The defecation frequency, stool weight per hour and body weight were determined on the last day. RESULTS: Although the 10-day administration of antibiotics reduced the stool weight per hour to half, the dewaxed brown rice and LPS groups showed a trend towards improvement at a level comparable to the group receiving no antibiotics. The body weight significantly decreased after the 27-day administration of antibiotics but was improved in the 50% dewaxed brown rice group at a level comparable to the group receiving no antibiotics. Though the defecation frequency and wet and dry stool weights per hour were reduced by as much as 50% in the group receiving antibiotics, a significant improvement in constipation was observed in the 50% dewaxed brown rice group. CONCLUSION: As the improvement effect of dewaxed brown rice on body weight loss and constipation caused by the long-term administration of antibiotics has been confirmed in animal experimentation, the introduction of dewaxed brown rice as a staple food to patients under long-term antibiotic treatment may improve constipation. Copyright
Authors: Helena Tlaskalová-Hogenová; Renata Stěpánková; Hana Kozáková; Tomáš Hudcovic; Luca Vannucci; Ludmila Tučková; Pavel Rossmann; Tomáš Hrnčíř; Miloslav Kverka; Zuzana Zákostelská; Klára Klimešová; Jaroslava Přibylová; Jiřina Bártová; Daniel Sanchez; Petra Fundová; Dana Borovská; Dagmar Srůtková; Zdeněk Zídek; Martin Schwarzer; Pavel Drastich; David P Funda Journal: Cell Mol Immunol Date: 2011-01-31 Impact factor: 11.530
Authors: Paul Andrew Muller; Balázs Koscsó; Gaurav Manohar Rajani; Korey Stevanovic; Marie-Luise Berres; Daigo Hashimoto; Arthur Mortha; Marylene Leboeuf; Xiu-Min Li; Daniel Mucida; E Richard Stanley; Stephanie Dahan; Kara Gross Margolis; Michael David Gershon; Miriam Merad; Milena Bogunovic Journal: Cell Date: 2014-07-17 Impact factor: 41.582