Evidence map›Paper›PMID 20357027›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2010

Cerebrovascular responses in mice deficient in the potassium channel, TREK-1.

Khodadad Namiranian, Eric E Lloyd, Randy F Crossland, Sean P Marrelli, George E Taffet, Anilkumar K Reddy, Craig J Hartley, Robert M Bryan

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

21 citing papers in PubMed, 31 citations in OpenAlex.

  1. Review
  2. Article
  3. Vascular mechanotransduction.Physiological reviews · 2023
    Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Traumatic brain injury in mice lacking the K channel, TREK-1.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2011
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 4 countries.

Khodadad NamiranianDepartment of Anesthesiology, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA.
Eric E Lloyd
Randy F Crossland
Sean P Marrelli
George E Taffet
Anilkumar K Reddy
Craig J Hartley
Robert M Bryan
Cardiovascular Research Center · BRBaylor College of Medicine · USInstitute of Molecular Biology and Biophysics · RU

Funding

Vascular Mechanisms of Secondary Injury After Traumatic Brain InjuryP01NS038660 · NINDS · BAYLOR COLLEGE OF MEDICINE · PI ROBERTSON, CLAUDIA S · 1999 to 2012
$12.1M
ULTRASONIC INSTRUMENTATION FOR CARDIOVASCULAR STUDIESR01HL022512 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI HARTLEY, CRAIG J. · 1985 to 2012
$4.3M
Mechanisms of Endothelial Cell HyperpolarizationR01HL088435 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI MARRELLI, SEAN P · 2008 to 2012
$1.9M
EDHF in the Cerebral CirculationR01NS046666 · NINDS · BAYLOR COLLEGE OF MEDICINE · PI BRYAN, ROBERT M · 2005 to 2009
$1.7M
MEASUREMENT OF AORTIC INPUT IMPEDANCE IN MICEK25HL073041 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI REDDY, ANILKUMAR K. · 2005 to 2009
$700k
NHLBI NIH HHS K25 HL073041NHLBI NIH HHS K25 HL73041NHLBI NIH HHS R01 HL022512NHLBI NIH HHS R01 HL088435NHLBI NIH HHS R01 HL22512NINDS NIH HHS P01 NS038660NINDS NIH HHS R01 NS046666NINDS NIH HHS R01 NS46666
6 · The paper itself

Abstract

We tested the hypothesis that TREK-1, a two-pore domain K channel, is involved with dilations in arteries. Because there are no selective activators or inhibitors of TREK-1, we generated a mouse line deficient in TREK-1. Endothelium-mediated dilations were not different in arteries from wild-type (WT) and TREK-1 knockout (KO) mice. This includes dilations of the middle cerebral artery to ATP, dilations of the basilar artery to ACh, and relaxations of the aorta to carbachol, a cholinergic agonist. The nitric oxide (NO) and endothelium-dependent hyperpolarizing factor components of ATP dilations were identical in the middle cerebral arteries of WT and TREK-1 KO mice. Furthermore, the NO and cyclooxygenase-dependent components were identical in the basilar arteries of the different genotypes. Dilations of the basilar artery to alpha-linolenic acid, an activator of TREK-1, were not affected by the absence of TREK-1. Whole cell currents recorded using patch-clamp techniques were similar in cerebrovascular smooth muscle cells (CVSMCs) from WT and TREK-1 KO mice. alpha-linolenic acid or arachidonic acid increased whole cell currents in CVSMCs from both WT and TREK-1 KO mice. The selective blockers of large-conductance Ca-activated K channels, penitrem A and iberiotoxin, blocked the increased currents elicited by either alpha-linolenic or arachidonic acid. In summary, dilations were similar in arteries from WT and TREK-1 KO mice. There was no sign of TREK-1-like currents in CVSMCs from WT mice, and there were no major differences in currents between the genotypes. We conclude that regulation of arterial diameter is not altered in mice lacking TREK-1.

Indexed as

Cerebrovascular CirculationVasodilationAction Potentialsalpha-Linolenic AcidAnimalsAortaArachidonic AcidBasilar ArteryDose-Response Relationship, DrugGenotypeLarge-Conductance Calcium-Activated Potassium ChannelsMiceMice, Inbred C57BLMice, KnockoutMiddle Cerebral ArteryMuscle, Smooth, Vascularalpha-Linolenic AcidArachidonic AcidLarge-Conductance Calcium-Activated Potassium ChannelsNitric OxidePotassiumPotassium Channel Blockerspotassium channel protein TREK-1Potassium Channels, Tandem Pore DomainProstaglandin-Endoperoxide SynthasesVasoconstrictor AgentsVasodilator Agents

Identifiers

PMID20357027
PMCPMC2928619
OpenAlexW2130213507

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.