Cited by 35Pulmonary Hypertension Research and TreatmentsNitric Oxide and Endothelin EffectsVascular Anomalies and Treatments

Effect of chronic sodium nitrite therapy on monocrotaline-induced pulmonary hypertension

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Pankey, Edward A., Badejo, Adeleke M., Casey, David B., Lasker, George F., Riehl, Russel A., Murthy, Subramanyam N., Nossaman, Bobby D., Kadowitz, Philip J.·2012·Nitric Oxide

Abstract

Pulmonary hypertension (PH) is a rare disorder that without treatment is progressive and often fatal within 3 years. The treatment of PH involves the use of a diverse group of drugs and lung transplantation. Although nitrite was once thought to be an inactive metabolite of endothelial-derived nitric oxide (NO), there is increasing evidence that nitrite may be useful in the treatment of PH, but the mechanism by which nitrite exerts its beneficial effect remains uncertain. The purpose of this study was to investigate the effect of chronic sodium nitrite treatment in a PH model in the rat. Following induction of PH with a single injection of monocrotaline, 60 mg; daily ip injections of sodium nitrite (3mg/kg) starting on day 14 and continuing for 21 days, resulted in a significantly lower pulmonary arterial pressure on day 35 when compared to values in untreated animals with monocrotaline-induced PH. In monocrotaline-treated rats, daily treatment with ip nitrite injections for 21 days decreased right ventricular mass and pathologic changes in small pulmonary arteries. Nitrite therapy did not change systemic arterial pressure or cardiac output when values were measured on day 35. The decreases in pulmonary arterial pressure in response to iv injections of sodium nitroprusside, sodium nitrite, and BAY 41-8543 were not different in rats with monocrotaline-induced pulmonary hypertension and rats with chronic nitrite therapy when compared to responses in animals in which pulmonary arterial pressure was increased with U46619. These findings are consistent with the hypothesis that the mechanisms that convert nitrite to vasoactive NO, activate soluble guanylyl cyclase and mediate the vasodilator response to NO or an NO derivative are not impaired. The present data are consistent with the results of a previous study in monocrotaline-induced PH in which systemic arterial pressure and cardiac output were not evaluated and are consistent with the hypothesis that nitrite is effective in the treatment of monocrotaline-induced PH in the rodent.

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Crossref · 10.1016/j.niox.2012.02.004

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  1. [48]Cosby K Partovi KS Crawford JH Patel RP Reiter CD Martyr S Yang BK Waclawiw MA Zalos G Xu X Huang KT Shields H Kim-Shapiro DB Schechter AN Cannon RO 3rd Gladwin MT Nitrite reduction to nitric oxide by deoxyhemoglobin vasodilates the human circulation.[see comment] Nature Med 9 2003 1498 505 14595407

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Authors
Pankey, E. A., Badejo, A. M., Casey, D. B., Lasker, G. F., Riehl, R. A., Murthy, S. N., Nossaman, B. D., & Kadowitz, P. J.
Affiliations
Tulane University (US)
Corresponding author
Kadowitz, Philip J.
Venue
Nitric Oxide
Publisher
Elsevier BV
Published
2012-06
Volume
27
Issue
1
Pages
1-8
ISSN
1089-8603 (ISSN-L)
OpenAlex
W1980023169
Cited by
35
References
82
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 1 · 2018: 4 · 2017: 4 · 2016: 2 · 2015: 2 · 2014: 7 · 2013: 4 · 2012: 2
FWCI
3.87
Type
journal article
Language
en
Open access
Locations
  • Nitric Oxide (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
NIH (HL 62000, HL 77421)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Pulmonary Hypertension Research and Treatments
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Genetics › Vascular Anomalies and Treatments
Keywords
sodium nitrite, pulmonary hypertension, monocrotaline, nitrite therapy, soluble guanylate cyclase, pulmonary artery pressure, right ventricular hypertrophy, pulmonary vasodilation, sodium nitroprusside, U46619, systemic blood pressure, cardiac output
MeSH terms
Animals, Blood Pressure, Cardiac Output, Dose-Response Relationship, Drug, Hemodynamics, Hypertension, Pulmonary, Lung, Morpholines, Nitric Oxide, Nitroprusside, Pyrimidines, Sodium Nitrite, Monocrotaline, Rats, Sprague-Dawley, Hypertrophy, Right Ventricular, Tunica Media, Rats

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