Evidence map›Paper›PMID 27171436›Full record

ArticlePloS one2016

Lipopolysaccharide Is Cleared from the Circulation by Hepatocytes via the Low Density Lipoprotein Receptor.

Elena Topchiy, Mihai Cirstea, HyeJin Julia Kong, John H Boyd, Yingjin Wang, James A Russell, Keith R Walley

Erratum issued Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT03869073 (Randomized, Double-blind, Placebo-controlled Phase 2a Trial of Efficacy and Safety of Evolocumab for PCSK9 Lowering in Early Acute Sepsis), which is not on this map. Cited by 62 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 2 pooled it
7.0field-weighted citation impact, top 3% 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.

NCT03869073 phase2unknown statusnot on this mapstarted 2019, after this paper: background citation

Randomized, Double-blind, Placebo-controlled Phase 2a Trial of Efficacy and Safety of Evolocumab for PCSK9 Lowering in Early Acute Sepsis

TypeinterventionalSponsorUniversity of British ColumbiaRan2019 to 2021Enrolled36ConditionsSepsisArmsEvolocumab, Placebo
3 · Its place in the literature

Who cites it

62 citing papers in PubMed, 2 syntheses or guidelines pooled it, 141 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Trial
  4. Trial
  5. PCSK9 in critical illness - It's not all about lipids.Annals of clinical biochemistry · 2026
    Review
  6. Article
  7. Observational
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

2 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 2 institutions in 1 country.

Elena TopchiyCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
Mihai CirsteaCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
HyeJin Julia KongCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
John H BoydCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
Yingjin WangCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
James A RussellCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
Keith R WalleyCentre for Heart Lung Innovation, St. Paul's Hospital, University of British Columbia, Vancouver, Canada.
University of British Columbia · CASt. Paul's Hospital · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Sepsis is the leading cause of death in critically ill patients. While decreased Proprotein Convertase Subtilisin/Kexin type 9 (PCSK9) function improves clinical outcomes in murine and human sepsis, the mechanisms involved have not been fully elucidated. We tested the hypothesis that lipopolysaccharide (LPS), the major Gram-negative bacteria endotoxin, is cleared from the circulation by hepatocyte Low Density Lipoprotein Receptors (LDLR)-receptors downregulated by PCSK9. We directly visualized LPS uptake and found that LPS is rapidly taken up by hepatocytes into the cell periphery. Over the course of 4 hours LPS is transported towards the cell center. We next found that clearance of injected LPS from the blood was reduced substantially in Ldlr knockout (Ldlr-/-) mice compared to wild type controls and, simultaneously, hepatic uptake of LPS was also reduced in Ldlr-/- mice. Specifically examining the role of hepatocytes, we further found that primary hepatocytes isolated from Ldlr-/- mice had greatly decreased LPS uptake. In the HepG2 immortalized human hepatocyte cell line, LDLR silencing similarly resulted in decreased LPS uptake. PCSK9 treatment reduces LDLR density on hepatocytes and, therefore, was another independent strategy to test our hypothesis. Incubation with PCSK9 reduced LPS uptake by hepatocytes. Taken together, these findings demonstrate that hepatocytes clear LPS from the circulation via the LDLR and PCSK9 regulates LPS clearance from the circulation during sepsis by downregulation of hepatic LDLR.

Indexed as

AnimalsHepatocytesHep G2 CellsHumansLipopolysaccharidesLiverMaleMiceProprotein Convertase 9Receptors, LDLReproducibility of ResultsTime FactorsLipopolysaccharidesPcsk9 protein, mouseProprotein Convertase 9Receptors, LDL

Identifiers

PMID27171436
PMCPMC4865154
OpenAlexW2376947412

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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.