Evidence map›Paper›PMID 19422800›Full record

ArticleBiochemical and biophysical research communications2009

Silencing of Cav1.2 gene in neonatal cardiomyocytes by lentiviral delivered shRNA.

Eddy Karnabi, Yongxia Qu, Salvatore Mancarella, Yuankun Yue, Raj Wadgaonkar, Mohamed Boutjdir

Abstract read
In one paragraph

Article in Biochemical and biophysical research communications, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.5field-weighted citation impact, top 34% 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

11 citing papers in PubMed, 19 citations in OpenAlex.

  1. C-Terminus of CaCells · 2026
    Article
  2. Review
  3. Review
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  6. Review
  7. Article
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  10. Methods in cardiomyocyte isolation, culture, and gene transfer.Journal of molecular and cellular cardiology · 2011
    Review
  11. Role of calcium channels in congenital heart block.Scandinavian journal of immunology · 2010
    Review
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

6 authors at 4 institutions in 1 country.

Eddy KarnabiVA New York Harbor Healthcare System, New York, NY, USA.
Yongxia Qu
Salvatore Mancarella
Yuankun Yue
Raj Wadgaonkar
Mohamed Boutjdir
VA NY Harbor Healthcare System · USNew York University · USState University of New York · USSUNY Downstate Health Sciences University · US

Funding

RESEARCH METHODS IN PEDIATRICS HEART DISEASET32HL007572 · NHLBI · CHILDREN'S HOSPITAL BOSTON · PI Sarah D DE FERRANTI, Jane W. Newburger · 1985 to 2026
$13.0M
Role of Ca channels in congenital heart blockR01HL077494 · NHLBI · NARROWS INSTITUTE FOR BIOMEDICAL RES INC · PI BOUTJDIR, MOHAMED · 2004 to 2007
$1.2M
NHLBI NIH HHS R01 HL-077494NHLBI NIH HHS R01 HL077494NHLBI NIH HHS T32 HL007572
6 · The paper itself

Abstract

Cav1.2 (alpha1C) and Cav1.3 (alpha1D) L-type Ca channels are co-expressed in the heart. To date, there are no pharmacological or biophysical tools to separate alpha1D from alpha1C Ca currents (I(Ca-L)) in cardiomyocytes. Here, we established a physiological model to study alpha1D I(Ca-L) in native myocytes using RNA interference. Transfection of rat neonatal cardiomyocytes (RNC) with alpha1C specific siRNA resulted in low silencing efficiency (50-60%) at the mRNA and protein levels. The use of lentivirus shRNA resulted in 100% transfection efficiency and 92% silencing of the alpha1C gene by real-time PCR and Western blot. Electrophysiological experiments showed that the total I(Ca-L) was similarly reduced by 80% in lentivirus transfected cells. Both biochemical and functional data demonstrated high transfection and silencing efficiency in the cardiomyocytes using lentiviral shRNA. This novel approach allows for the assessments of the roles of alpha1C and alpha1D Ca channels in native myocytes and could be used to examine their roles in physiological and pathological settings.

Indexed as

AnimalsCalcium ChannelsCalcium Channels, L-TypeLentivirusModels, CardiovascularMyocytes, CardiacRatsRNA InterferenceRNA, Small InterferingTransfectionCacna1c protein, ratCacna1d protein, ratCalcium ChannelsCalcium Channels, L-TypeRNA, Small Interfering

Identifiers

PMID19422800
PMCPMC4334931
OpenAlexW2003755164

What OpenQuestion holds

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LicenceTDM
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.