Evidence map›Paper›PMID 33454595›Full record

ReviewBiomedicine & pharmacotherapy = Biomedecine & pharmacotherapie2021

The role of iron in the pathogenesis of COVID-19 and possible treatment with lactoferrin and other iron chelators.

Hosam M Habib, Sahar Ibrahim, Aamnah Zaim, Wissam H Ibrahim

Open access · goldAbstract readReview
In one paragraph

Review in Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 148 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
148citing papers in PubMed, 4 pooled it
18.8field-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

148 citing papers in PubMed, 4 syntheses or guidelines pooled it, 248 citations in OpenAlex.

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  12. Recent progress in understanding ferroptosis mechanisms in infectious diseases.Frontiers in cellular and infection microbiology · 2026
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  16. Role of Ferroptosis on Lung Epithelial Cells in Disease Progression and Treatment: A Review.Medical science monitor : international medical journal of experimental and clinical research · 2025
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88 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 2 countries.

Hosam M HabibFunctional Foods and Nutraceuticals Laboratory (FFNL), Dairy Science and Technology Department, Faculty of Agriculture, Alexandria University, Alexandria, Egypt. Electronic address: hosaml@hotmail.com.
Sahar IbrahimWeldon School of Biomedical Engineering, Purdue University, USA.
Aamnah ZaimWeldon School of Biomedical Engineering, Purdue University, USA.
Wissam H IbrahimOffice of Institutional Effectiveness, United Arab Emirates University, P. O. Box 15551, Al Ain, UAE. Electronic address: wibrahim@uaeu.ac.ae.
Alexandria University · EGUnited Arab Emirates University · AE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Iron overload is increasingly implicated as a contributor to the pathogenesis of COVID-19. Indeed, several of the manifestations of COVID-19, such as inflammation, hypercoagulation, hyperferritinemia, and immune dysfunction are also reminiscent of iron overload. Although iron is essential for all living cells, free unbound iron, resulting from iron dysregulation and overload, is very reactive and potentially toxic due to its role in the generation of reactive oxygen species (ROS). ROS react with and damage cellular lipids, nucleic acids, and proteins, with consequent activation of either acute or chronic inflammatory processes implicated in multiple clinical conditions. Moreover, iron-catalyzed lipid damage exerts a direct causative effect on the newly discovered nonapoptotic cell death known as ferroptosis. Unlike apoptosis, ferroptosis is immunogenic and not only leads to amplified cell death but also promotes a series of reactions associated with inflammation. Iron chelators are generally safe and are proven to protect patients in clinical conditions characterized by iron overload. There is also an abundance of evidence that iron chelators possess antiviral activities. Furthermore, the naturally occurring iron chelator lactoferrin (Lf) exerts immunomodulatory as well as anti-inflammatory effects and can bind to several receptors used by coronaviruses thereby blocking their entry into host cells. Iron chelators may consequently be of high therapeutic value during the present COVID-19 pandemic.

Indexed as

SARS-CoV-2COVID-19HumansIronIron Chelating AgentsIron OverloadLactoferrinIronIron Chelating AgentsLactoferrinBlood groupsCOVID-19Free ironHemoglobin damageHypercoagulationHyperferritinemiaInflammationIron chelatorsIron overloadLactoferrin

Identifiers

PMID33454595
PMCPMC7836924
OpenAlexW3119520299

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.