Evidence map›Paper›PMID 20679437›Full record

ReviewInfection and immunity2010

Overcoming the heme paradox: heme toxicity and tolerance in bacterial pathogens.

Laura L Anzaldi, Eric P Skaar

Open access · greenAbstract readReview
In one paragraph

Review in Infection and immunity, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 156 papers.

0numbers the graph read from it
0cells of the map it votes in
156citing papers in PubMed
7.8field-weighted citation impact, top 2% 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

156 citing papers in PubMed, 299 citations in OpenAlex.

  1. Engineering a heme-dependent tryptophan hydroxylase pathway inSynthetic and systems biotechnology · 2026
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96 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

2 authors at 1 institution in 1 country.

Laura L AnzaldiDepartment of Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
Eric P Skaar
Vanderbilt University Medical Center · US

Funding

Yessinia autotransporters (Yaps): Structure, function, and host responseU54AI057157 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SEMPOWSKI, GREGORY D · 2003 to 2013
$91.4M
Immunobiology of Blood and Vascular Systems Training ProgramT32HL069765 · NHLBI · VANDERBILT UNIVERSITY · PI HAWIGER, JACK J · 2002 to 2016
$6.5M
Pathobiology of heme inducible transporters in Gram positive pathogensR01AI073843 · NIAID · VANDERBILT UNIVERSITY MEDICAL CENTER · PI SKAAR, ERIC P · 2009 to 2025
$5.9M
Mechanism and function of heme-iron utilization in staphylococcal pathogenesisR01AI069233 · NIAID · VANDERBILT UNIVERSITY MEDICAL CENTER · PI SKAAR, ERIC P · 2006 to 2020
$5.6M
NHLBI NIH HHS 5 T32 HL069765NHLBI NIH HHS T32 HL069765NIAID NIH HHS AI069233NIAID NIH HHS AI073843NIAID NIH HHS R01 AI069233NIAID NIH HHS R01 AI073843NIAID NIH HHS U54 AI057157NIAID NIH HHS U54 AI057157-06
6 · The paper itself

Abstract

Virtually all bacterial pathogens require iron to infect vertebrates. The most abundant source of iron within vertebrates is in the form of heme as a cofactor of hemoproteins. Many bacterial pathogens have elegant systems dedicated to the acquisition of heme from host hemoproteins. Once internalized, heme is either degraded to release free iron or used intact as a cofactor in catalases, cytochromes, and other bacterial hemoproteins. Paradoxically, the high redox potential of heme makes it a liability, as heme is toxic at high concentrations. Although a variety of mechanisms have been proposed to explain heme toxicity, the mechanisms by which heme kills bacteria are not well understood. Nonetheless, bacteria employ various strategies to protect against and eliminate heme toxicity. Factors involved in heme acquisition and detoxification have been found to contribute to virulence, underscoring the physiological relevance of heme stress during pathogenesis. Herein we describe the current understanding of the mechanisms of heme toxicity and how bacterial pathogens overcome the heme paradox during infection.

Indexed as

BacteriaBacterial Physiological PhenomenaHemeHemeproteinsOxidation-ReductionHemeHemeproteins

Identifiers

PMID20679437
PMCPMC2981329
OpenAlexW2069666755

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.