Evidence map›Paper›PMID 21743021›Full record

ArticleInvestigative ophthalmology & visual science2011

ATP-sensitive potassium (KATP) channel activation decreases intraocular pressure in the anterior chamber of the eye.

Uttio Roy Chowdhury, Cindy K Bahler, Cheryl R Hann, Minhwang Chang, Zachary T Resch, Michael F Romero, Michael P Fautsch

Open access · greenAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

25 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
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  6. Article
  7. Pharmacological Profile and Ocular Hypotensive Effects of Cromakalim Prodrug 1, a Novel ATP-Sensitive Potassium Channel Opener, in Normotensive Dogs and Nonhuman Primates.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2021
    Article
  8. Article
  9. Neuroinflammation in Primary Open-Angle Glaucoma.Journal of clinical medicine · 2020
    Review
  10. Article
  11. Aqueous Humor Outflow Requires Active Cellular Metabolism in Mice.Investigative ophthalmology & visual science · 2020
    Article
  12. Article
  13. Novel Therapeutics in Glaucoma Management.Current neuropharmacology · 2018
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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

7 authors at 1 institution in 1 country.

Uttio Roy ChowdhuryDepartments of Ophthalmology, Mayo Clinic, Rochester, Minnesota, USA.
Cindy K Bahler
Cheryl R Hann
Minhwang Chang
Zachary T Resch
Michael F Romero
Michael P Fautsch
Mayo Clinic · US

Funding

CELLULAR BIOLOGY OF THE TRABECULAR MESHWORKR01EY007065 · NEI · MAYO CLINIC ROCHESTER · PI FAUTSCH, MICHAEL P. · 1987 to 2010
$5.8M
Intraocular pressure regulation via ATP-sensitive potassium channelsR01EY021727 · NEI · MAYO CLINIC ROCHESTER · PI FAUTSCH, MICHAEL P. · 2011 to 2021
$4.1M
Molecular mechanisms of the electrogenic Na+ Bicarbonate Cotransporter (NBCe1)R01EY017732 · NEI · MAYO CLINIC ROCHESTER · PI ROMERO, MICHAEL F. · 2006 to 2010
$1.6M
Molecular Analysis of the Human Aqueous Outflow PathwayR01EY015736 · NEI · MAYO CLINIC ROCHESTER · PI FAUTSCH, MICHAEL P. · 2006 to 2010
$1.6M
REGULATING AAV-MEDIATED RETINAL TRANSGENE EXPRESSIONF32EY007065 · NEI · UNIVERSITY OF PENNSYLVANIA · PI DEJNEKA, NADINE S · 2000 to 2001
$80k
NEI NIH HHS EY 017732NEI NIH HHS EY 07065NEI NIH HHS EY 15736NEI NIH HHS F32 EY007065NEI NIH HHS R01 EY007065NEI NIH HHS R01 EY015736NEI NIH HHS R01 EY017732NEI NIH HHS R01 EY021727
6 · The paper itself

Abstract

PURPOSE. ATP-sensitive potassium channel (K(ATP)) openers target key cellular events, many of which have been implicated in glaucoma. The authors sought to determine whether K(ATP) channel openers influence outflow facility in human anterior segment culture and intraocular pressure (IOP) in vivo. METHODS. Anterior segments from human eyes were placed in perfusion organ culture and treated with the K(ATP) channel openers diazoxide, nicorandil, and P1075 or the K(ATP) channel closer glyburide (glibenclamide). The presence, functionality, and specificity of K(ATP) channels were determined by RT-PCR, immunohistochemistry, and inside-out patch clamp in human trabecular meshwork (TM) tissue or primary cultures of normal human trabecular meshwork (NTM) cells. The effect of diazoxide on IOP in anesthetized Brown Norway rats was measured with a rebound tonometer. RESULTS. K(ATP) channel openers increased outflow facility in human anterior segments (0.14 ± 0.02 to 0.26 ± 0.09 μL/min/mm Hg; P < 0.001) compared with fellow control eyes (0.22 ± 0.11 to 0.21 ± 0.11 μL/min/mm Hg; P > 0.5). The effect was reversible, with outflow facility returning to baseline after drug removal. The addition of glyburide inhibited diazoxide from increasing outflow facility. Electrophysiology confirmed the presence and specificity of functional K(ATP) channels. K(ATP) channel subunits K(ir)6.1, K(ir)6.2, SUR2A, and SUR2B were expressed in TM and NTM cells. In vivo, diazoxide significantly lowered IOP in Brown Norway rats. CONCLUSIONS. Functional K(ATP) channels are present in the trabecular meshwork. When activated by K(ATP) channel openers, these channels increase outflow facility through the trabecular outflow pathway in human anterior segment organ culture and decrease IOP in Brown Norway rat eyes.

Indexed as

AgedAged, 80 and overAnimalsCells, CulturedDiazoxideFemaleGlyburideGuanidinesHumansImmunohistochemistryIntraocular PressureKATP ChannelsMaleMiddle AgedNicorandilOrgan Culture TechniquesDiazoxideGlyburideGuanidinesKATP ChannelsN-cyano-N'-(1,1-dimethylpropyl)-N''-(3-pyridinyl)guanidineNicorandilPyridinesVasodilator Agents

Identifiers

PMID21743021
PMCPMC3176023
OpenAlexW2006735490

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.