» Articles » PMID: 39052036

Mild Hyperbaric Oxygen Exposure Protects Heart During Ischemia/reperfusion and Affects Vascular Relaxation

Overview
Journal Pflugers Arch
Specialty Physiology
Date 2024 Jul 25
PMID 39052036
Authors
Affiliations
Soon will be listed here.
Abstract

Mild hyperbaric oxygen therapy (mHBOT) is an adjuvant therapy used in conditions where tissue oxygenation is reduced and is implemented using pressures less than 1.5 ATA and 100% O (instead of the classical HBOT at 1.9-3 ATA) which results in cheaper, easier to implement, and equally effective. mHBOT is offered for wellness and beauty and as an anti-aging strategy, in spite of the absence of studies on the cardiovascular system. Consequently, we investigated the impact of mHBOT on the cardiovascular system. Mechanical and energetic parameters of isolated heart submitted to ischemia/reperfusion injury and arterial contractile response from mHBOT-exposed rats were evaluated. In the heart, mHBOT increased pre-ischemic velocity of contraction and ischemic end-diastolic pressure and developed pressure and contractile economy during reperfusion. mHBOT decreased infarct size and increased the plasma nitrite levels. In the artery, mHBOT increased acetylcholine sensitivity. mHBOT protects the heart during ischemia/reperfusion and affects vascular relaxation.

References
1.
Bergo G, Tyssebotn I . Cardiovascular effects of hyperbaric oxygen with and without addition of carbon dioxide. Eur J Appl Physiol Occup Physiol. 1999; 80(4):264-75. DOI: 10.1007/s004210050592. View

2.
Black S, Johengen M, Ma Z, Bristow J, Soifer S . Ventilation and oxygenation induce endothelial nitric oxide synthase gene expression in the lungs of fetal lambs. J Clin Invest. 1997; 100(6):1448-58. PMC: 508323. DOI: 10.1172/JCI119665. View

3.
Blanchard E, Solaro R . Inhibition of the activation and troponin calcium binding of dog cardiac myofibrils by acidic pH. Circ Res. 1984; 55(3):382-91. DOI: 10.1161/01.res.55.3.382. View

4.
Cabigas B, Su J, Hutchins W, Shi Y, Schaefer R, Recinos R . Hyperoxic and hyperbaric-induced cardioprotection: role of nitric oxide synthase 3. Cardiovasc Res. 2006; 72(1):143-51. DOI: 10.1016/j.cardiores.2006.06.031. View

5.
Chen C, Chen W, Nong Z, Ma Y, Qiu S, Wu G . Cardioprotective Effects of Combined Therapy with Hyperbaric Oxygen and Diltiazem Pretreatment on Myocardial Ischemia-Reperfusion Injury in Rats. Cell Physiol Biochem. 2016; 38(5):2015-29. DOI: 10.1159/000445561. View