PMID- 28335502 OWN - NLM STAT- MEDLINE DCOM- 20170508 LR - 20230928 IS - 1420-3049 (Electronic) IS - 1420-3049 (Linking) VI - 22 IP - 3 DP - 2017 Mar 19 TI - Catechins and Their Therapeutic Benefits to Inflammatory Bowel Disease. LID - 10.3390/molecules22030484 [doi] LID - 484 AB - Catechins are natural polyphenolic phytochemicals that exist in food and medicinal plants, such as tea, legume and rubiaceae. An increasing number of studies have associated the intake of catechins-rich foods with the prevention and treatment of chronic diseases in humans, such as inflammatory bowel disease (IBD). Some studies have demonstrated that catechins could significantly inhibit the excessive oxidative stress through direct or indirect antioxidant effects and promote the activation of the antioxidative substances such as glutathione peroxidases (GPO) and glutathione (GSH), reducing the oxidative damages to the colon. In addition, catechins can also regulate the infiltration and proliferation of immune related-cells, such as neutrophils, colonic epithelial cells, macrophages, and T lymphocytes, helping reduce the inflammatory relations and provide benefits to IBD. Perhaps catechins can further inhibit the deterioration of intestinal lesions through regulating the cell gap junctions. Furthermore, catechins can exert their significant anti-inflammatory properties by regulating the activation or deactivation of inflammation-related oxidative stress-related cell signaling pathways, such as nuclear factor-kappa B (NF-kappaB), mitogen activated protein kinases (MAPKs), transcription factor nuclear factor (erythroid-derived 2)-like 2 (Nrf2), signal transducer and the activator of transcription 1/3 (STAT1/3) pathways. Finally, catechins can also stabilize the structure of the gastrointestinal micro-ecological environment via promoting the proliferation of beneficial intestinal bacteria and regulating the balance of intestinal flora, so as to relieve the IBD. Furthermore, catechins may regulate the tight junctions (TJ) in the epithelium. This paper elaborates the currently known possible molecular mechanisms of catechins in favor of IBD. FAU - Fan, Fei-Yan AU - Fan FY AD - Department of Gastroenterology, First Affiliated Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang 110001, China. feiyanfan7212@163.com. FAU - Sang, Li-Xuan AU - Sang LX AD - Department of Geriatrics, First Affiliated Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang 110001, China. sanglixuan2008@163.com. FAU - Jiang, Min AU - Jiang M AD - Department of Gastroenterology, First Affiliated Hospital of China Medical University, 155 Nanjing North Street, Heping District, Shenyang 110001, China. fendou1957@163.com. LA - eng PT - Journal Article PT - Review DEP - 20170319 PL - Switzerland TA - Molecules JT - Molecules (Basel, Switzerland) JID - 100964009 RN - 8R1V1STN48 (Catechin) SB - IM MH - Catechin/chemistry/pharmacology/*therapeutic use MH - Cell Proliferation/drug effects MH - Gastrointestinal Microbiome/drug effects MH - Gene Expression Regulation/drug effects MH - Humans MH - Inflammatory Bowel Diseases/*drug therapy/immunology/*prevention & control MH - Intercellular Junctions/drug effects MH - Neutrophil Infiltration/drug effects MH - Oxidative Stress/drug effects PMC - PMC6155401 OTO - NOTNLM OT - catechins OT - inflammatory bowel disease OT - mechanisms OT - oxidative stress OT - tight junction functionality COIS- The authors declare no conflict of interest. EDAT- 2017/03/25 06:00 MHDA- 2017/05/10 06:00 PMCR- 2017/03/19 CRDT- 2017/03/25 06:00 PHST- 2017/01/06 00:00 [received] PHST- 2017/02/19 00:00 [revised] PHST- 2017/02/28 00:00 [accepted] PHST- 2017/03/25 06:00 [entrez] PHST- 2017/03/25 06:00 [pubmed] PHST- 2017/05/10 06:00 [medline] PHST- 2017/03/19 00:00 [pmc-release] AID - molecules22030484 [pii] AID - molecules-22-00484 [pii] AID - 10.3390/molecules22030484 [doi] PST - epublish SO - Molecules. 2017 Mar 19;22(3):484. doi: 10.3390/molecules22030484.