Evidence map›Paper›PMID 29740038›Full record

ArticleScientific reports2018

Heparin inhibits intracellular Mycobacterium tuberculosis bacterial replication by reducing iron levels in human macrophages.

Rodrigo Abreu, Lauren Essler, Allyson Loy, Frederick Quinn, Pramod Giri

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.1field-weighted citation impact, top 12% 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

25 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
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  10. Article
  11. TargetingRSC medicinal chemistry · 2023
    Review
  12. Review
  13. Article
  14. Heparin-Peptide Nanogranules for Thrombosis-Actuated Anticoagulation.Small (Weinheim an der Bergstrasse, Germany) · 2022
    Article
  15. Phenotypic adaptation ofFrontiers in cellular and infection microbiology · 2022
    Review
  16. Article
  17. Review
  18. Article
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  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 at 1 institution in 1 country.

Rodrigo AbreuDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA.
Lauren EsslerDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA.
Allyson LoyDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA.
Frederick QuinnDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA.
Pramod GiriDepartment of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, 30602, USA. pgiri@uga.edu.
University of Georgia · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Iron is a crucial micronutrient for both mammals and their associated pathogens, and extensive literature has shown that Mycobacterium tuberculosis (Mtb) bacilli inhibited from acquiring iron from the host are severely attenuated. In contrast, increased dietary iron concentrations or patients with hemochromatosis have long been associated with a more severe tuberculosis (TB) disease outcome. We have observed that upon macrophage infection, Mtb bacilli strongly promote intracellular iron sequestration, both through increased expression of hepcidin, a key mammalian iron regulatory protein, and downregulation of the iron exporter protein, ferroportin. Heparin is a highly sulfated glycosaminoglycan released by mast cells and basophils at sites of tissue injury. During Mtb infection, heparin alters intracellular trafficking in alveolar epithelial cells and decreases extrapulmonary dissemination but recently, heparin also has been reported to inhibit hepcidin expression in hepatocytes, decreasing intracellular iron availability. In this report, we demonstrate that heparin significantly reduces hepcidin expression in macrophages infected with Mtb bacilli. Heparin-treated macrophages have higher ferroportin expression compared to untreated macrophages, promoting iron export and decreasing iron availability to intracellular bacilli. Thus, here we describe a novel immunomodulatory effect and potential therapeutic role for heparin against mycobacterial infection in human macrophages.

Indexed as

CytoplasmGene Expression RegulationHeparinHepcidinsHumansImmunomodulationIronMacrophagesMycobacterium tuberculosisTuberculosisHeparinHepcidinsIron

Identifiers

PMID29740038
PMCPMC5940867
OpenAlexW2805358315

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.