Cited by 137Nitric Oxide and Endothelin EffectsCardiac Ischemia and ReperfusionOrgan Transplantation Techniques and Outcomes

Nitric oxide promotes distant organ protection: evidence for an endocrine role of nitric oxide

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Elrod, John W., Calvert, John W., Gundewar, Susheel, Bryan, Nathan S., Lefer, David J.·2008·Proceedings of the National Academy of Sciences

Abstract

Endothelial NOS (eNOS)-derived NO has long been considered a paracrine signaling molecule only capable of affecting nearby cells because of its short half-life in blood and relatively limited diffusion distance in tissues. To date, no studies have demonstrated that endogenously generated NO possesses a clearly defined endocrine function. Therefore, we evaluated whether enzymatic generation of NO in the heart is capable of modulating remote physiological actions and cell signaling. Mice with cardiac-specific overexpression of the human eNOS gene (CS-eNOS-Tg) were used to address this hypothesis. Cardiac-specific eNOS overexpression resulted in significant increases in nitrite, nitrate, and nitrosothiols in the heart, plasma, and liver. To examine whether the increase in hepatic NO metabolites could modulate cytoprotection, we subjected CS-eNOS-Tg mice to hepatic ischemia-reperfusion (I/R) injury. CS-eNOS-Tg mice displayed a significant reduction in hepatic I/R injury (4.2-fold reduction in the aminotransferase and a 3.5-fold reduction in aspartate aminotransferase) compared with WT littermates. These findings demonstrate that endogenously derived NO is transported in the blood, metabolized in remote organs, and mediates cytoprotection in the setting of I/R injury. This study presents clear evidence for an endocrine role of NO generated endogenously from eNOS and provides additional evidence for the profound cytoprotective actions of NO in the setting of I/R injury.

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Crossref · 10.1073/pnas.0800700105

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  • CS-eNOS-Tg mice display significant protection against hepatic I/R injury due to the increase in hepatic NO metabolites originating from the myocardium.

    “CS-eNOS-Tg mice displayed a significant protection against hepatic I/R injury due to the increase in hepatic NO metabolites originating from the myocardium.”
  • CS-eNOS-Tg mice have significant increases in nitrite, nitrate, and nitrosothiols in the heart, plasma, and liver.

    “Elrod et al documented significant increases in nitrite, nitrate, and nitrosothiols in the heart, plasma, and liver [164].”
  • Pharmacological scavengers PTIO and NEM inhibit the protective effects in CS-eNOS-Tg mice, indicating a role for nitrite reduction to NO and S-nitrosylation for cytoprotection.

    “Experiments also showed that pharmacological scavengers PTIO and NEM inhibited the protective effects in CS-eNOS-Tg mice, indicating a role for nitrite reduction to NO and S-nitrosylation for cytoprotection [164].”

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Authors
Elrod, J. W., Calvert, J. W., Gundewar, S., Bryan, N. S., & Lefer, D. J.
Affiliations
  • Albert Einstein College of Medicine (US)
  • Departments of *Medicine and
  • Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases (US)
Venue
Proceedings of the National Academy of Sciences
Published
2008-08-12
Volume
105
Issue
32
Pages
11430-11435
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2078820537
Cited by
137
References
41
Citations by year
2026: 2 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 8 · 2021: 2 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 7 · 2016: 4 · 2015: 11 · 2014: 7 · 2013: 15 · 2012: 24
FWCI
8.58
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Diabetes Association
  • American Heart Association
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (2R01 HL-060849, R01HL060849)
  • National Institute of Diabetes and Digestive and Kidney Diseases (F32DK077380)
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Surgery › Organ Transplantation Techniques and Outcomes
Keywords
nitric oxide, endothelial nitric oxide synthase, hepatic ischemia-reperfusion injury, cytoprotection, nitrite/nitrate, S-nitrosothiols, hepatoprotection
MeSH terms
Animals, Biological Transport, Liver, Mice, Transgenic, Myocardium, Nitrates, Nitric Oxide, Nitrites, Organ Specificity, Reperfusion Injury, Cytoprotection, Paracrine Communication, Mice, Nitric Oxide Synthase Type II, Nitric Oxide Synthase Type III

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