Evidence map›Paper›PMID 19915177›Full record

ArticleAmerican journal of physiology. Heart and circulatory physiology2010

Regulation of the ADMA-DDAH system in endothelial cells: a novel mechanism for the sterol response element binding proteins, SREBP1c and -2.

Christine Y Ivashchenko, Benjamin T Bradley, Zhaohui Ao, James Leiper, Patrick Vallance, Douglas G Johns

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Heart and circulatory physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 40 citations in OpenAlex.

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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

6 authors at 4 institutions in 2 countries.

Christine Y IvashchenkoGlaxoSmithKline, Metabolic Pathways Center for Excellence in Drug Discovery, King of Prussia, PA 19406, USA. christine.x.ivashchenko@gsk.com
Benjamin T Bradley
Zhaohui Ao
James Leiper
Patrick Vallance
Douglas G Johns
Center for Excellence in Education · USGlaxoSmithKline (United States) · USBritish Heart Foundation · GBPathways Behavioral Services · US

Funding

Medical Research Council MC_U120097118
6 · The paper itself

Abstract

Asymmetric dimethylarginine (ADMA) has been implicated in the progression of cardiovascular disease as an endogenous inhibitor of nitric oxide synthase. The regulation of dimethylarginine dimethylaminohydrolase (DDAH), the enzyme responsible for metabolizing ADMA, is poorly understood. The transcription factor sterol response element binding protein (SREBP) is activated by statins via a reduction of membrane cholesterol content. Because the promoters of both DDAH1 and DDAH2 isoforms contain sterol response elements, we tested the hypothesis that simvastatin regulates DDAH1 and DDAH2 transcription via SREBP. In cultured endothelial cells, simvastatin increased DDAH1 mRNA expression compared with vehicle. In an ADMA loading experiment, simvastatin treatment resulted in a decrease in ADMA content, an indication of increased DDAH activity. The knockdown of SREBP1c protein led to an increase in DDAH1 mRNA expression and activity, whereas the knockdown of SREBP2 led to a decrease in DDAH1 mRNA expression. The role of SREBP2 in the activation of the DDAH1 was supported by chromatin immunoprecipitation studies demonstrating increased binding of SREBP2 to the DDAH1 promoter upon simvastatin stimulation. These data indicate that SREBP1c might act as a repressor and SREBP2 as an activator of DDAH transcription and activity. This study describes a novel mechanism of reciprocal regulation by the SREBP family members of the DDAH-ADMA system, which represents a potential link between cellular cholesterol content and endothelial dysfunction observed in cardiovascular disease.

Indexed as

AmidohydrolasesArginineBlotting, WesternCells, CulturedChromatinChromatography, High Pressure LiquidDNA PrimersEndothelial CellsHumansHydroxymethylglutaryl-CoA Reductase InhibitorsImmunoprecipitationLentivirusNitritesReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSimvastatinAmidohydrolasesArginineChromatindimethylargininaseDNA PrimersHydroxymethylglutaryl-CoA Reductase InhibitorsNitritesN,N-dimethylarginineRNA, MessengerSimvastatinSREBF1 protein, humanSREBF2 protein, humanSterol Regulatory Element Binding Protein 1Sterol Regulatory Element Binding Protein 2

Identifiers

PMID19915177
PMCPMC2806130
OpenAlexW2117764503

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.