Evidence map›Paper›PMID 20184915›Full record

ReviewProgress in biophysics and molecular biology2010

Interplay of voltage and Ca-dependent inactivation of L-type Ca current.

Eleonora Grandi, Stefano Morotti, Kenneth S Ginsburg, Stefano Severi, Donald M Bers

Abstract readReview
In one paragraph

Review in Progress in biophysics and molecular biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
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

20 citing papers in PubMed.

  1. Article
  2. Article
  3. Antiarrhythmic and Inotropic Effects of Selective NaInternational journal of molecular sciences · 2022
    Review
  4. Article
  5. Article
  6. Calcium-dependent inactivation controls cardiac L-type CaThe Journal of general physiology · 2019
    Article
  7. How CaThe Journal of general physiology · 2019
    Article
  8. Article
  9. A Mathematical Model of the Human Cardiac NaThe Journal of membrane biology · 2019
    Article
  10. Review
  11. Article
  12. Sarcolemmal distribution ofAmerican journal of physiology. Heart and circulatory physiology · 2017
    Article
  13. Article
  14. Arrhythmogenesis in a catecholaminergic polymorphic ventricular tachycardia mutation that depresses ryanodine receptor function.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
  15. Review
  16. Article
  17. Review
  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

5 authors.

Eleonora GrandiDepartment of Pharmacology, University of California, Davis, 451 Health Sciences Drive, GBSF 3506, Davis, CA 95616, USA. egrandi@ucdavis.edu
Stefano Morotti
Kenneth S Ginsburg
Stefano Severi
Donald M Bers

Funding

Program AdministrationP01HL080101 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BERS, DONALD M · 2006 to 2015
$23.4M
Ca and Na Transport in Heart FailureR01HL064724 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BERS, DONALD M · 2000 to 2008
$4.4M
IONIC CONTROL OF CARDIAC MUSCLE CONTRACTION: EC COUPLINGR37HL030077 · NHLBI · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BERS, DONALD M · 2005 to 2014
$3.9M
IONIC CONTROL OF CARDIAC MUSCLE CONTRACTION: EC COUPLINGR01HL030077 · NHLBI · UNIVERSITY OF CALIFORNIA RIVERSIDE · PI BERS, DONALD M · 1986 to 2018
$3.8M
NHLBI NIH HHS HL30077NHLBI NIH HHS HL80101NHLBI NIH HHS P01 HL080101NHLBI NIH HHS R01 HL030077NHLBI NIH HHS R01 HL064724NHLBI NIH HHS R37 HL030077
6 · The paper itself

Abstract

Inactivation of L-type Ca channels (LTCC) is regulated by both Ca and voltage-dependent processes (CDI and VDI). To differentiate VDI and CDI, several experimental and theoretical studies have considered the inactivation of Ba current through LTCC (I(Ba)) as a measure of VDI. However, there is evidence that Ba can weakly mimic Ca, such that I(Ba) inactivation is still a mixture of CDI and VDI. To avoid this complication, some have used the monovalent cation current through LTCC (I(NS)), which can be measured when divalent cation concentrations are very low. Notably, I(NS) inactivation rate does not depend on current amplitude, and hence may reflect purely VDI. However, based on analysis of existent and new data, and modeling, we find that I(NS) can inactivate more rapidly and completely than I(Ba), especially at physiological temperature. Thus VDI that occurs during I(Ba) (or I(Ca)) must differ intrinsically from VDI during I(NS). To account for this, we have extended a previously published LTCC mathematical model of VDI and CDI into an excitation-contraction coupling model, and assessed whether and how experimental I(Ba) inactivation results (traditionally used in VDI experiments and models) could be recapitulated by modifying CDI to account for Ba-dependent inactivation. Thus, the view of a slow and incomplete I(NS) inactivation should be revised, and I(NS) inactivation is a poor measure of VDI during I(Ca) or I(Ba). This complicates VDI analysis experimentally, but raises intriguing new questions about how the molecular mechanisms of VDI differ for divalent and monovalent currents through LTCCs.

Indexed as

Action PotentialsAnimalsCalciumCalcium Channels, L-TypeCationsHumansKineticsTemperatureCalciumCalcium Channels, L-TypeCations

Identifiers

PMID20184915
PMCPMC2907421

What OpenQuestion holds

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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.