PMID- 32306507 OWN - NLM STAT- MEDLINE DCOM- 20210715 LR - 20221005 IS - 1613-4133 (Electronic) IS - 1613-4125 (Print) IS - 1613-4125 (Linking) VI - 64 IP - 11 DP - 2020 Jun TI - Inhibition of 5-Lipoxygenase-Derived Leukotrienes and Hemiketals as a Novel Anti-Inflammatory Mechanism of Urolithins. PG - e2000129 LID - 10.1002/mnfr.202000129 [doi] AB - SCOPE: Urolithins (Uro), gut microbial metabolites derived from ellagic acid (EA), reach significant concentrations in the human colon. Uro-A exerts anti-inflammatory activity in animal models of inflammatory bowel diseases (IBDs). It is hypothesized that Uro can modulate the biosynthesis of leukocyte-derived inflammatory eicosanoids from the 5-lipoxygenase (5-LOX), cyclooxygenase-2 (COX-2), and 5-LOX/COX-2 pathways, relevant in the onset and progression of IBDs, including 5-hydroxyeicosatetraenoic acids (5-HETEs), leukotriene-B(4) (LTB(4) ), prostaglandin E(2) (PGE(2) ), and hemiketals (HKE(2) and HKD(2) ). METHODS AND RESULTS: Leukocytes, obtained from six healthy donors, are stimulated with lipopolysaccharide and calcium ionophore A23187. Uro, at concentrations found in the human colon (1-15 microm), decrease eicosanoid biosynthesis and COX-2 levels in the activated leukocytes. In contrast, EA and conjugated Uro (glucuronides and sulfates) are inactive. Uro-A and isourolithin-A reduce the formation of the 5-LOX/COX-2 products HKE(2) and HKD(2) through the COX-2 pathway (down-regulation of COX-2 and PGE2), whereas Uro-C reduces 5-HETE and LTB(4) via inhibition of 5-LOX. CONCLUSIONS: The results show that physiologically relevant colonic Uro target eicosanoid biosynthetic pathways. The effect on HKs and LTB(4) formation is unprecedented and expands the knowledge on anti-inflammatory mechanisms of Uro against IBDs. CI - (c) 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Gimenez-Bastida, Juan Antonio AU - Gimenez-Bastida JA AUID- ORCID: 0000-0002-1244-8764 AD - Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA. AD - Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain. FAU - Gonzalez-Sarrias, Antonio AU - Gonzalez-Sarrias A AUID- ORCID: 0000-0002-3407-0678 AD - Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain. FAU - Espin, Juan Carlos AU - Espin JC AUID- ORCID: 0000-0002-1068-8692 AD - Laboratory of Food and Health, Research Group on Quality, Safety and Bioactivity of Plant Foods, Dept. Food Science and Technology, CEBAS-CSIC, P.O. Box 164, Murcia, Campus de Espinardo, 30100, Spain. FAU - Schneider, Claus AU - Schneider C AUID- ORCID: 0000-0003-4215-967X AD - Department of Pharmacology and Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical School, Nashville, TN, 37232, USA. LA - eng GR - 16POST30690001/AHA/American Heart Association-American Stroke Association/United States GR - R01 GM076592/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20200504 PL - Germany TA - Mol Nutr Food Res JT - Molecular nutrition & food research JID - 101231818 RN - 0 (Anti-Inflammatory Agents, Non-Steroidal) RN - 0 (Coumarins) RN - 0 (Eicosanoids) RN - 0 (Hydrolyzable Tannins) RN - 0 (Hydroxyeicosatetraenoic Acids) RN - 0 (urolithin B) RN - 0 (urolithin C) RN - 1143-70-0 (3,8-dihydroxy-6H-dibenzo(b,d)pyran-6-one) RN - 1HGW4DR56D (Leukotriene B4) RN - 467RNW8T91 (5-hydroxy-6,8,11,14-eicosatetraenoic acid) RN - EC 1.13.11.34 (Arachidonate 5-Lipoxygenase) RN - EC 1.14.99.1 (Cyclooxygenase 2) RN - EC 1.14.99.1 (PTGS2 protein, human) RN - K7Q1JQR04M (Dinoprostone) SB - IM MH - Animals MH - Anti-Inflammatory Agents, Non-Steroidal/chemistry/*pharmacology MH - Arachidonate 5-Lipoxygenase/*metabolism MH - Coumarins/pharmacology MH - Cyclooxygenase 2/metabolism MH - Dinoprostone/metabolism MH - Eicosanoids/*metabolism MH - Humans MH - Hydrolyzable Tannins/pharmacology MH - Hydroxyeicosatetraenoic Acids/metabolism MH - Leukocytes/drug effects/metabolism MH - Leukotriene B4/metabolism MH - Mice MH - RAW 264.7 Cells PMC - PMC7297467 MID - NIHMS1586058 OTO - NOTNLM OT - 5-lipoxygenase OT - cyclooxygenase-2 OT - eicosanoid OT - inflammatory bowel disease OT - urolithins COIS- Conflict of interest Authors declare not having any financial or personal interest, nor having an association with any individuals or organizations that could have influenced inappropriately the submitted work. EDAT- 2020/04/20 06:00 MHDA- 2021/07/16 06:00 PMCR- 2021/06/01 CRDT- 2020/04/20 06:00 PHST- 2020/02/09 00:00 [received] PHST- 2020/03/27 00:00 [revised] PHST- 2020/04/20 06:00 [pubmed] PHST- 2021/07/16 06:00 [medline] PHST- 2020/04/20 06:00 [entrez] PHST- 2021/06/01 00:00 [pmc-release] AID - 10.1002/mnfr.202000129 [doi] PST - ppublish SO - Mol Nutr Food Res. 2020 Jun;64(11):e2000129. doi: 10.1002/mnfr.202000129. Epub 2020 May 4.