Evidence map›Paper›PMID 12388093›Full record

ArticleAmerican journal of physiology. Cell physiology2002

L-type voltage-dependent Ca2+ channels in cerebral microvascular endothelial cells and ET-1 biosynthesis.

Momoh A Yakubu, Charles W Leffler

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Cell physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

16 citing papers in PubMed, 39 citations in OpenAlex.

  1. Review
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  6. Review
  7. Type 2 Diabetes Alters Intracellular CaInternational journal of molecular sciences · 2019
    Article
  8. Review
  9. Article
  10. Article
  11. Effects of distension on airway inflammation and venular P-selectin expression.American journal of physiology. Lung cellular and molecular physiology · 2008
    Article
  12. Article
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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.

Momoh A YakubuLaboratory for Research in Neonatal Physiology, Vascular Biology Program, Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA. yakubu_ma@tsu.edu
Charles W Leffler
University of Tennessee Health Science Center · US

Funding

STUDIES OF THE CONTROL OF NEONATAL CIRCULATIONR01HL034059 · NHLBI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI PARFENOVA, HELENA · 1985 to 2016
$5.9M
CARBON MONOXIDE IN NEWBORN CEREBRAL CIRCULATIONR37HL042851 · NHLBI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI LEFFLER, CHARLES W. · 2000 to 2009
$3.5M
PERMISSIVE ROLE OF PGI-2 IN NEWBORN CEREBRAL CIRCULATIONR01HL042851 · NHLBI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI PARFENOVA, HELENA · 1991 to 2019
$3.4M
Cerebral Microvascular Endothelin ProductionR15HL070669 · NHLBI · TEXAS SOUTHERN UNIVERSITY · PI YAKUBU, MOMOH A · 2002 to 2003
$182k
NHLBI NIH HHS HL-34059NHLBI NIH HHS HL-42851NHLBI NIH HHS R01 HL034059NHLBI NIH HHS R01 HL042851NHLBI NIH HHS R15 HL070669NHLBI NIH HHS R37 HL042851
6 · The paper itself

Abstract

We investigated the role of intracellular calcium concentration ([Ca2+]i) in endothelin-1 (ET-1) production, the effects of potential vasospastic agents on [Ca2+]i, and the presence of L-type voltage-dependent Ca2+ channels in cerebral microvascular endothelial cells. Primary cultures of endothelial cells isolated from piglet cerebral microvessels were used. Confluent cells were exposed to either the thromboxane receptor agonist U-46619 (1 microM), 5-hydroxytryptamine (5-HT; 0.1 mM), or lysophosphatidic acid (LPA; 1 microM) alone or after pretreatment with the Ca2+-chelating agent EDTA (100 mM), the L-type Ca2+ channel blocker verapamil (10 microM), or the antagonist of receptor-operated Ca2+ channel SKF-96365 HCl (10 microM) for 15 min. ET-1 production increased from 1.2 (control) to 8.2 (U-46619), 4.9 (5-HT), or 3.9 (LPA) fmol/microg protein, respectively. Such elevated ET-1 biosynthesis was attenuated by verapamil, EDTA, or SKF-96365 HCl. To investigate the presence of L-type voltage-dependent Ca2+ channels in endothelial cells, the [Ca2+]i signal was determined fluorometrically by using fura 2-AM. Superfusion of confluent endothelial cells with U-46619, 5-HT, or LPA significantly increased [Ca2+]i. Pretreatment of endothelial cells with high K+ (60 mM) or nifedipine (4 microM) diminished increases in [Ca2+]i induced by the vasoactive agents. These results indicate that 1) elevated [Ca2+]i signals are involved in ET-1 biosynthesis induced by specific spasmogenic agents, 2) the increases in [Ca2+]i induced by the vasoactive agents tested involve receptor as well as L-type voltage-dependent Ca2+ channels, and 3) primary cultures of cerebral microvascular endothelial cells express L-type voltage-dependent Ca2+ channels.

Indexed as

AnimalsCalciumCalcium Channels, L-TypeCalcium SignalingCardiovascular AgentsCells, CulturedCerebrovascular CirculationEndothelin-1Endothelium, VascularIntracellular MembranesMicrocirculationOsmolar ConcentrationSwineCalciumCalcium Channels, L-TypeCardiovascular AgentsEndothelin-1

Identifiers

PMID12388093
PMCPMC2924154
OpenAlexW2125113794

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.