Evidence map›Paper›PMID 7562643›Full record

ArticleThe Journal of physiology1995

Nitric oxide hyperpolarizes rabbit mesenteric arteries via ATP-sensitive potassium channels.

M E Murphy, J E Brayden

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 85 papers.

0numbers the graph read from it
0cells of the map it votes in
85citing papers in PubMed
14.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

85 citing papers in PubMed, 357 citations in OpenAlex.

  1. Review
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  12. Cardiac NaThe journal of physiological sciences : JPS · 2019
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  13. Pinacidil, a KATP channel opener, stimulates cardiac NaNaunyn-Schmiedeberg's archives of pharmacology · 2019
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  14. Biology open · 2019
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  15. Ion Channels in Pulmonary Hypertension: A Therapeutic Interest?International journal of molecular sciences · 2018
    Review
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  18. The KThe journal of headache and pain · 2017
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  19. Article
  20. Vascular KRespiratory physiology & neurobiology · 2017
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25 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

M E MurphyDepartment of Pharmacology, College of Medicine, University of Vermont Medical Research Facility, Colchester 05446, USA.
J E Brayden
University of Vermont · US

Funding

SYNERGISM BETWEEN MODULATORS OF CEREBROVASCULAR TONEF32HL008648 · NHLBI · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI MURPHY, MICHAEL E · 1992 to 1994
–
NEUROGENIC VASODILATION--MEDIATORS AND MECHANISMSR01HL035911 · NHLBI · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI BRAYDEN, JOSEPH ELLIOTT · 1989 to 1993
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NEUROGENIC VASODILATION: MEDIATORS AND MECHANISMSR23HL035911 · NHLBI · UNIVERSITY OF VERMONT &ST AGRIC COLLEGE · PI BRAYDEN, JOSEPH ELLIOTT · 1986 to 1988
–
NHLBI NIH HHS HL08648NHLBI NIH HHS HL35911
6 · The paper itself

Abstract

1. Nitric oxide (NO) relaxes vascular smooth muscle (VSM) by mechanisms which are not fully understood. One possibility is that NO hyperpolarizes membranes, thereby diminishing Ca2+ entry through voltage-dependent Ca2+ channels. In the current study, the effects of NO on membrane potential of rabbit mesenteric arteries were recorded using intracellular microelectrodes. 2. NO, released by 3-morpholinosydnonimine (SIN-1, 3 microM), reversibly hyperpolarized arteries by -9.5 +/- 4.0 mV (means +/- S.D., n = 97) from a resting membrane potential of -53.1 +/- 5.7 mV. The hyperpolarization was blocked by oxyhaemoglobin (20 microM), and only occurred in arteries pre-treated with N omega-nitro-L-arginine (100 microM) or denuded of endothelium. 3. The effect of SIN-1 was concentration dependent (EC50 approximately 0.4 microM) and its dose response was shifted to the left by zaprinast (100 microM), an inhibitor of cGMP-specific phosphodiesterases. 4. The hyperpolarization due to SIN-1 was modified by changes in extracellular K+ concentration, but not by changes in Ca2+, Na+ or Cl-. The hyperpolarization was blocked by glibenclamide (IC50 approximately 0.15 microM), but not by apamin (3-300 nM), barium (5-150 microM), tetraethylammonium (0.1-10 mM), or 4-aminopyridine (5-500 microM). The hyperpolarization due to lemakalim (0.03-3 microM), an activator of ATP-sensitive potassium channels (KATP), displayed the same sensitivities to these K+ channel blocking agents, whereas the endothelium-derived hyperpolarizing factor, triggered by the addition of acetylcholine (3 microM), caused a hyperpolarization (-15.3 +/- 6.2 mV) that was blocked by apamin, but not by any other agent. 5. These results suggest that NO hyperpolarizes VSM in rabbit mesenteric arteries by activating KATP channels, with the accumulation of cGMP as an intermediate step.

Indexed as

Adenosine TriphosphateAnimalsBiological FactorsGlyburideIn Vitro TechniquesMembrane PotentialsMesenteric ArteriesMicroelectrodesMolsidomineMuscle RelaxationMuscle, Smooth, VascularNitric OxidePatch-Clamp TechniquesPotassium ChannelsRabbitsVasodilator AgentsAdenosine TriphosphateBiological Factorsendothelium-dependent hyperpolarization factorGlyburidelinsidomineMolsidomineNitric OxidePotassium ChannelsVasodilator Agents

Identifiers

PMID7562643
PMCPMC1156495
OpenAlexW2090968114

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.