PMID- 30885203 OWN - NLM STAT- MEDLINE DCOM- 20190423 LR - 20200225 IS - 1475-2840 (Electronic) IS - 1475-2840 (Linking) VI - 18 IP - 1 DP - 2019 Mar 18 TI - Altered bioavailability of epoxyeicosatrienoic acids is associated with conduit artery endothelial dysfunction in type 2 diabetic patients. PG - 35 LID - 10.1186/s12933-019-0843-z [doi] LID - 35 AB - BACKGROUND: This pathophysiological study addressed the hypothesis that soluble epoxide hydrolase (sEH), which metabolizes the vasodilator and anti-inflammatory epoxyeicosatrienoic acids (EETs) to dihydroxyeicosatrienoic acids (DHETs), contributes to conduit artery endothelial dysfunction in type 2 diabetes. METHODS AND RESULTS: Radial artery endothelium-dependent flow-mediated dilatation in response to hand skin heating was reduced in essential hypertensive patients (n = 9) and type 2 diabetic subjects with (n = 19) or without hypertension (n = 10) compared to healthy subjects (n = 36), taking into consideration cardiovascular risk factors, flow stimulus and endothelium-independent dilatation to glyceryl trinitrate. Diabetic patients but not non-diabetic hypertensive subjects displayed elevated whole blood reactive oxygen species levels and loss of NO release during heating, assessed by measuring local plasma nitrite variation. Moreover, plasma levels of EET regioisomers increased during heating in healthy subjects, did not change in hypertensive patients and decreased in diabetic patients. Correlation analysis showed in the overall population that the less NO and EETs bioavailability increases during heating, the more flow-mediated dilatation is reduced. The expression and activity of sEH, measured in isolated peripheral blood mononuclear cells, was elevated in diabetic but not hypertensive patients, leading to increased EETs conversion to DHETs. Finally, hyperglycemic and hyperinsulinemic euglycemic clamps induced a decrease in flow-mediated dilatation in healthy subjects and this was associated with an altered EETs release during heating. CONCLUSIONS: These results demonstrate that an increased EETs degradation by sEH and altered NO bioavailability are associated with conduit artery endothelial dysfunction in type 2 diabetic patients independently from their hypertensive status. The hyperinsulinemic and hyperglycemic state in these patients may contribute to these alterations. Trial registration NCT02311075. Registered December 8, 2014. FAU - Duflot, Thomas AU - Duflot T AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. AD - Laboratory of Pharmacokinetics, Toxicology and Pharmacogenetics, Rouen University Hospital, 76000, Rouen, France. FAU - Moreau-Grange, Lucile AU - Moreau-Grange L AD - Department of Endocrinology, Rouen University Hospital, 76000, Rouen, France. FAU - Roche, Clothilde AU - Roche C AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Iacob, Michele AU - Iacob M AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. FAU - Wils, Julien AU - Wils J AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Remy-Jouet, Isabelle AU - Remy-Jouet I AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Cailleux, Anne-Francoise AU - Cailleux AF AD - Department of Endocrinology, Rouen University Hospital, 76000, Rouen, France. FAU - Leuillier, Matthieu AU - Leuillier M AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Renet, Sylvanie AU - Renet S AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Li, Dongyang AU - Li D AD - Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, Davis, CA, 95616, USA. FAU - Morisseau, Christophe AU - Morisseau C AD - Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, Davis, CA, 95616, USA. FAU - Lamoureux, Fabien AU - Lamoureux F AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. AD - Laboratory of Pharmacokinetics, Toxicology and Pharmacogenetics, Rouen University Hospital, 76000, Rouen, France. FAU - Richard, Vincent AU - Richard V AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. FAU - Prevost, Gaetan AU - Prevost G AD - Department of Endocrinology, Rouen University Hospital, 76000, Rouen, France. AD - Normandie Univ, UNIROUEN, INSERM U1239, 76000, Rouen, France. FAU - Joannides, Robinson AU - Joannides R AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. AD - Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, 76000, Rouen, France. FAU - Bellien, Jeremy AU - Bellien J AUID- ORCID: 0000-0002-0383-2342 AD - Department of Pharmacology, Rouen University Hospital, 76000, Rouen Cedex, France. jeremy.bellien@chu-rouen.fr. AD - Normandie Univ, UNIROUEN, INSERM U1096, FHU REMOD-VHF, 76000, Rouen, France. jeremy.bellien@chu-rouen.fr. AD - Centre d'Investigation Clinique (CIC)-INSERM 1404, Rouen University Hospital, 76000, Rouen, France. jeremy.bellien@chu-rouen.fr. LA - eng SI - ClinicalTrials.gov/NCT02311075 GR - R01 ES002710/ES/NIEHS NIH HHS/United States GR - P42 ES004699/ES/NIEHS NIH HHS/United States GR - R01 DK103616/DK/NIDDK NIH HHS/United States GR - R01 ES002710/NH/NIH HHS/United States GR - P42 ES004699/NH/NIH HHS/United States GR - R01 DK103616/NH/NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20190318 PL - England TA - Cardiovasc Diabetol JT - Cardiovascular diabetology JID - 101147637 RN - 0 (Biomarkers) RN - 0 (Eicosanoids) RN - 0 (Nitrites) RN - 0 (Vasodilator Agents) RN - 31C4KY9ESH (Nitric Oxide) RN - EC 3.3.2.- (Epoxide Hydrolases) RN - EC 3.3.2.10 (EPHX2 protein, human) RN - G59M7S0WS3 (Nitroglycerin) SB - IM MH - Aged MH - Biomarkers/blood MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/*blood/diagnosis/physiopathology MH - Diabetic Angiopathies/*blood/diagnosis/physiopathology MH - Eicosanoids/*blood MH - Epoxide Hydrolases/metabolism MH - Essential Hypertension/*blood/diagnosis/physiopathology MH - Female MH - Humans MH - Hyperthermia, Induced MH - Male MH - Middle Aged MH - Nitric Oxide/metabolism MH - Nitrites/blood MH - Nitroglycerin/administration & dosage MH - Radial Artery/drug effects/*metabolism/physiopathology MH - *Vasodilation/drug effects MH - Vasodilator Agents/administration & dosage PMC - PMC6423843 OTO - NOTNLM OT - Endothelial dysfunction OT - Epoxyeicosatrienoic acids OT - Soluble epoxide hydrolase OT - Type 2 diabetes COIS- The authors declare that they have no competing interests. EDAT- 2019/03/20 06:00 MHDA- 2019/04/24 06:00 PMCR- 2019/03/18 CRDT- 2019/03/20 06:00 PHST- 2019/01/09 00:00 [received] PHST- 2019/03/08 00:00 [accepted] PHST- 2019/03/20 06:00 [entrez] PHST- 2019/03/20 06:00 [pubmed] PHST- 2019/04/24 06:00 [medline] PHST- 2019/03/18 00:00 [pmc-release] AID - 10.1186/s12933-019-0843-z [pii] AID - 843 [pii] AID - 10.1186/s12933-019-0843-z [doi] PST - epublish SO - Cardiovasc Diabetol. 2019 Mar 18;18(1):35. doi: 10.1186/s12933-019-0843-z.