Evidence map›Paper›PMID 23690465›Full record

ArticleCirculation2013

Serum proprotein convertase subtilisin/kexin type 9 and cell surface low-density lipoprotein receptor: evidence for a reciprocal regulation.

Hagai Tavori, Daping Fan, John L Blakemore, Patricia G Yancey, Lei Ding, Macrae F Linton, Sergio Fazio

Open access · bronzeAbstract read
In one paragraph

Article in Circulation, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed, 4 pooled it
20.0field-weighted citation impact, top 1% 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

84 citing papers in PubMed, 4 syntheses or guidelines pooled it, 189 citations in OpenAlex.

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  12. CRISPR-Cas9 Targeting PCSK9: A Promising Therapeutic Approach for Atherosclerosis.Journal of cardiovascular translational research · 2025
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24 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Hagai TavoriVanderbilt University, Cardiovascular Medicine, Nashville, TN 37232-6300, USA.
Daping Fan
John L Blakemore
Patricia G Yancey
Lei Ding
Macrae F Linton
Sergio Fazio
University of South Carolina · US

Funding

PCSK9, Lipoprotein receptors, and AtherosclerosisR01HL106845 · NHLBI · VANDERBILT UNIVERSITY · PI FAZIO, SERGIO · 2011 to 2014
$2.0M
NHLBI NIH HHS R01 HL106845NHLBI NIH HHS R01-HL106845
6 · The paper itself

Abstract

backgroundProprotein convertase subtilisin/kexin type 9 (PCSK9) modulates low-density lipoprotein (LDL) receptor (LDLR) degradation, thus influencing serum cholesterol levels. However, dysfunctional LDLR causes hypercholesterolemia without affecting PCSK9 clearance from the circulation. METHODS AND

resultsTo study the reciprocal effects of PCSK9 and LDLR and the resultant effects on serum cholesterol, we produced transgenic mice expressing human (h) PCSK9. Although hPCSK9 was expressed mainly in the kidney, LDLR degradation was more evident in the liver. Adrenal LDLR levels were not affected, likely because of the impaired PCSK9 retention in this tissue. In addition, hPCSK9 expression increased hepatic secretion of apolipoprotein B-containing lipoproteins in an LDLR-independent fashion. Expression of hPCSK9 raised serum murine PCSK9 levels by 4.3-fold in wild-type mice and not at all in LDLR(-/-) mice, in which murine PCSK9 levels were already 10-fold higher than in wild-type mice. In addition, LDLR(+/-) mice had a 2.7-fold elevation in murine PCSK9 levels and no elevation in cholesterol levels. Conversely, acute expression of human LDLR in transgenic mice caused a 70% decrease in serum murine PCSK9 levels. Turnover studies using physiological levels of hPCSK9 showed rapid clearance in wild-type mice (half-life, 5.2 minutes), faster clearance in human LDLR transgenics (2.9 minutes), and much slower clearance in LDLR(-/-) recipients (50.5 minutes). Supportive results were obtained with an in vitro system. Finally, up to 30% of serum hPCSK9 was associated with LDL regardless of LDLR expression.

conclusionsOur results support a scenario in which LDLR represents the main route of elimination of PCSK9 and a reciprocal regulation between these 2 proteins controls serum PCSK9 levels, hepatic LDLR expression, and serum LDL levels.

Indexed as

AnimalsCells, CulturedCholesterolDisease Models, AnimalHumansHypercholesterolemiaIn Vitro TechniquesMaleMiceMice, Inbred C57BLMice, KnockoutMice, TransgenicProprotein Convertase 9Proprotein ConvertasesReceptors, LDLSerine EndopeptidasesCholesterolPCSK9 protein, humanPcsk9 protein, mouseProprotein Convertase 9Proprotein ConvertasesReceptors, LDLSerine EndopeptidasescholesterolLDL receptorlipoproteinsmouse modelPcsk9 protein

Identifiers

PMID23690465
PMCPMC3806304
OpenAlexW2146769790

What OpenQuestion holds

Textmetadata
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.