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Published on: August 13, 2019
Resveratrol prevents endothelial dysfunction and aortic superoxide production after trauma hemorrhage through
Huang-Ping Yu1, Tsong-Long Hwang, Tsann-Long Hwang
1Department of Anesthesiology, Chang Gung Memorial Hospital, National Pingtung University of Science and Technology, Pingtung, Taiwan.
Objective:
To determine whether resveratrol provides vasculoprotection in trauma-hemorrhaged animals and whether the effects are mediated via estrogen receptor-dependent hemeoxygenase-1.
Design:
Prospective, multiexperimental, randomized, controlled studies.
Setting:
University research laboratory.
Subjects:
Male Sprague-Dawley rats weighing 300-350 g.
Interventions:
Male Sprague-Dawley rats underwent trauma hemorrhage (mean arterial pressure 40 mm Hg for 90 min, then resuscitation). Resveratrol (30 mg/kg) with or without an estrogen receptor antagonist (ICI 182,780), a hemeoxygenase enzyme inhibitor (chromium-mesoporphyrin), or vehicle was injected during resuscitation. At 24 hrs after trauma hemorrhage with resuscitation or sham operation, the animals were euthanized for further evaluation.
Measurements And Main Results:
Acetylcholine-induced endothelium-dependent relaxation decreased, whereas nicotinamide adenine dinucleotide-stimulated superoxide radical production in the aorta and aortic p22phox, p47phox, gp91phox, NOX1, and NOX4 mRNA concentrations increased in trauma-hemorrhaged rats vs. sham rats. All altered parameters were normalized in resveratrol-treated trauma-hemorrhaged rats. Furthermore, there was a significant increase in hemeoxygenase-1 after trauma hemorrhage, and resveratrol treatment further increased hemeoxygenase-1 expression in trauma-hemorrhaged rats. However, administration of ICI 182,780 or chromium-mesoporphyrin abolished the resveratrol-induced prevention of shock-induced oxidative stress and endothelial damage. In the resveratrol-treated rats subjected to trauma hemorrhage, there were significant improvements in plasma aspartate aminotransferase and alanine aminotransferase levels, and mortality rate, and there was lesser damage in histology.
Conclusions:
Resveratrol treatment prevented the overproduction of superoxide radical/NADPH oxidase expression and restored the trauma-hemorrhage-impaired endothelium-dependent relaxation via estrogen receptor-dependent stimulation of hemeoxygenase-1 expression.
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