Cited by 14Cardiac Ischemia and ReperfusionNitric Oxide and Endothelin EffectsNeurological Disorders and Treatments

Nitrite Attenuates Ischemia-Reperfusion–Induced Microcirculatory Alterations and Mitochondrial Dysfunction in the Microvasculature of Skeletal Muscle

Wang, Wei Z., Fang, Xin-Hua, Stephenson, Linda L., Zhang, Xinlan, Williams, Shelley J., Baynosa, Richard C., Khiabani, Kayvan T., Zamboni, William A.·2011·Plastic and Reconstructive Surgery

Abstract

BACKGROUND: Recently, nitrite has been rediscovered as a physiologically relevant storage reservoir of nitric oxide in blood and it can readily be converted to nitric oxide under hypoxic and acidic conditions. In this study, the authors evaluated the therapeutic efficacy of nitrite on reperfusion-induced microcirculatory alterations and mitochondrial dysfunction in the microvasculature of skeletal muscle. METHODS: The authors used a vascular pedicle isolated rat cremaster model that underwent 4 hours of warm ischemia followed by 2 hours or 17 hours of reperfusion. At 5 minutes before reperfusion, normal saline, sodium nitrite (0.20 μM/minute/kg), or nitrite mixed with 2-(4-carboxyphenyl)-4,5-dihydro-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl (potassium salt) (0.2 mg/minute/kg) was infused into the microcirculation of ischemic cremaster by means of intraarterial infusion. Ischemia-reperfusion-induced microcirculatory alterations were measured after 2 hours of reperfusion. Microvasculature of the cremaster muscle including the vascular pedicle was harvested to determine the mitochondrial dysfunction. The blood concentration of methemoglobin was also measured to determine the toxicity of nitrite. RESULTS: The authors found that nitrite significantly attenuated ischemia-reperfusion-induced vasoconstriction, arteriole stagnation, and capillary no-reflow in the early phase of reperfusion and the depolarization of mitochondrial membrane potential and cytochrome c release in the late phase of reperfusion. Nitrite-induced protection was significantly blocked by a nitric oxide scavenger (potassium salt). The methemoglobin results showed that the doses of nitrite we used in the present study were safe. CONCLUSION: The supplementation of a low dose of nitrite, directly into the microcirculation of ischemic muscle through local intraarterial infusion, significantly attenuated ischemia-reperfusion-induced microcirculatory alterations in vivo and mitochondrial dysfunction in vitro in the microvasculature of skeletal muscle.

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Crossref · 10.1097/prs.0b013e3182268b9a

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  • Nitrite is protective against ischemia/reperfusion and other forms of injury in multiple tissues and organs.

    “Numerous investigations have reported that nitrite is protective against I/R and other forms of injury in multiple tissues and organs (81, 125, 188), as reviewed extensively elsewhere (157).”

    From Inorganic nitrite supplementation for healthy arterial aging (2014) · cites this paper as [188]

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Authors
Wang, W. Z., Fang, X.-H., Stephenson, L. L., Zhang, X., Williams, S. J., Baynosa, R. C., Khiabani, K. T., & Zamboni, W. A.
Affiliations
  • University of Nevada, Las Vegas (US)
  • University of Nevada, Reno (US)
Venue
Plastic and Reconstructive Surgery
Published
2011-10
Volume
128
Issue
4
Pages
279e-287e
ISSN
0032-1052 (ISSN-L)
OpenAlex
W2313018523
Cited by
14
References
0
Citations by year
2023: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 2 · 2016: 2 · 2015: 1 · 2014: 2 · 2013: 1 · 2012: 1
FWCI
1.12
Type
journal article
Language
en
Open access
closed
Locations
  • Plastic & Reconstructive Surgery (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Life Sciences › Neuroscience › Neurology › Neurological Disorders and Treatments
Keywords
nitrite, sodium nitrite, ischemia-reperfusion injury, microcirculation, mitochondrial dysfunction, skeletal muscle, nitric oxide, vasoconstriction, mitochondrial membrane potential, cytochrome c release, methemoglobin, cremaster muscle, intra-arterial infusion, nitric oxide scavengers
MeSH terms
Analysis of Variance, Animals, Disease Models, Animal, Dose-Response Relationship, Drug, Ischemia, Male, Membrane Potentials, Methemoglobin, Microcirculation, Mitochondria, Muscle, Nitrites, Random Allocation, Reference Values, Reperfusion Injury, Rats, Sprague-Dawley, Muscle, Skeletal, Cytochromes c, Rats

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