Abstract | BACKGROUND: METHODS: These experiments used an established murine model in which ear tissue perfusion was measured by laser Doppler to test the hypothesis that inhibition of sEH would limit niacin-induced flushing. RESULTS:
Niacin-induced flushing was reduced from 506 ± 126% to 213 ± 39% in sEH knockout animals. Pharmacologic treatment with 3 structurally distinct sEH inhibitors similarly reduced flushing in a dose-dependent manner, with maximal reduction to 143% ± 15% of baseline flow using a concentration of 1 mg/kg TPAU (1-trifluoromethoxyphenyl-3-(1-acetylpiperidin-4-yl) urea). Systemically administered PGD2 caused ear vasodilation, which was not changed by either pharmacologic sEH inhibition or sEH gene deletion. CONCLUSIONS: Inhibition of sEH markedly reduces niacin-induced flushing in this model without an apparent effect on the response to PGD2. sEH inhibition may be a new therapeutic approach to limit flushing in humans.
|
Authors | Ahmet B Inceoglu, Heather L Clifton, Jun Yang, Christine Hegedus, Bruce D Hammock, Saul Schaefer |
Journal | Journal of cardiovascular pharmacology
(J Cardiovasc Pharmacol)
Vol. 60
Issue 1
Pg. 70-5
(Jul 2012)
ISSN: 1533-4023 [Electronic] United States |
PMID | 22526297
(Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)
|
Chemical References |
- 1-trifluoromethoxyphenyl-3-(1-acetylpiperidin-4-yl)urea
- Phenylurea Compounds
- Piperidines
- Vasodilator Agents
- Niacin
- Arachidonic Acid
- Epoxide Hydrolases
- Dinoprostone
- Prostaglandin D2
|
Topics |
- Animals
- Arachidonic Acid
(metabolism)
- Dinoprostone
(metabolism)
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Epoxide Hydrolases
(genetics, metabolism)
- Flushing
(chemically induced)
- Gene Deletion
- Laser-Doppler Flowmetry
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Niacin
(administration & dosage, adverse effects, pharmacology)
- Phenylurea Compounds
(pharmacology)
- Piperidines
(pharmacology)
- Prostaglandin D2
(administration & dosage, metabolism)
- Vasodilation
(drug effects)
- Vasodilator Agents
(administration & dosage, adverse effects, pharmacology)
|