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Stimulation of soluble guanylate cyclase by an acetylcholine-induced endothelium-derived factor from rabbit and canine arteries
Open accessAbstract
The present study was designed to investigate the hypothesis that, during acetylcholine-induced endothelium-dependent relaxation, a factor(s) is released from endothelial cells which directly activates soluble guanylate cyclase. We attempted to determine what similarities or differences existed between this factor and endothelium-derived relaxing factor. The study was performed on segments of rabbit aorta and canine femoral artery. Purified soluble guanylate cyclase was injected into the lumen of these vascular segments, together with its substrate, for intraluminal incubation of the enzyme. In endothelium-intact vascular segments, the activity of guanylate cyclase was enhanced over control values obtained by incubation in test tubes. The stimulation was further increased by acetylcholine in concentrations which caused relaxation of the vascular segments. The stimulating principle could not be transferred from the vessel lumen to an external solution of guanylate cyclase, indicating a short life-time. Removal of the endothelium prevented formation and release of the guanylate cyclase stimulating factor(s). Atropine, mepacrine, or nordihydroguaiaretic acid, which inhibit acetylcholine-induced endothelium-dependent relaxations, also inhibited acetylcholine-induced endothelium-mediated activation of guanylate cyclase. The results support the hypothesis that acetylcholine-induced endothelium-derived relaxing factor increases cyclic guanosine monophosphate levels of vascular smooth muscle by a stimulation of soluble guanylate cyclase.
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“NO synthesized by NOS in the endothelium diffuses into the vessel wall where it activates sGC in vascular smooth muscle; this leads to a rise in cyclic GMP (cGMP) and elicits relaxation of the vessel [96-102].”
From Regulation of obesity and insulin resistance by nitric oxide (2014) · cites this paper as [98]
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Self-citation
Metadata
- Authors
- Förstermann, U., Mülsch, A., Böhme, E., & Busse, R.
- Venue
- Circulation Research
- Published
- 1986-04
- Volume
- 58
- Issue
- 4
- Pages
- 531-538
- ISSN
- 0009-7330 (ISSN-L)
- 1524-4571
- OpenAlex
- W2130054105
- Cited by
- 288
- References
- 21
- Citations by year
- 2026: 3 · 2025: 3 · 2024: 2 · 2023: 7 · 2022: 4 · 2021: 5 · 2020: 4 · 2019: 5 · 2018: 6 · 2017: 3 · 2016: 2 · 2015: 6 · 2014: 7 · 2013: 2 · 2012: 6
- FWCI
- 22.97
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Circulation Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Deutsche Forschungsgemeinschaft
- Topics
- Health Sciences › Medicine › Physiology (medical) › Nitric Oxide and Endothelin Effects
- Health Sciences › Medicine › Surgery › Cardiovascular, Neuropeptides, and Oxidative Stress Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Eicosanoids and Hypertension Pharmacology
- Keywords
- soluble guanylate cyclase, acetylcholine, endothelium-derived relaxing factor, endothelium-dependent relaxation, cyclic GMP, vascular smooth muscle, endothelial cells, aorta, femoral artery, atropine, quinacrine, nordihydroguaiaretic acid, guanylate cyclase activation
- MeSH terms
- Acetylcholine, Animals, Aorta, Thoracic, Cyclic CMP, Dogs, Endothelium, Enzyme Activation, Femoral Artery, Guanylate Cyclase, Muscle Relaxation, Muscle, Smooth, Vascular, Nitric Oxide, Nitroprusside, Rabbits, Vasodilator Agents
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