Evidence map›Paper›PMID 27216061›Full record

ArticleAntimicrobial agents and chemotherapy2016

The MisR Response Regulator Is Necessary for Intrinsic Cationic Antimicrobial Peptide and Aminoglycoside Resistance in Neisseria gonorrhoeae.

Justin L Kandler, Concerta L Holley, Jennifer L Reimche, Vijaya Dhulipala, Jacqueline T Balthazar, Artur Muszyński, Russell W Carlson, William M Shafer

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

24 citing papers in PubMed, 28 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Justin L KandlerDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Concerta L HolleyDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Jennifer L ReimcheDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Vijaya DhulipalaDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Jacqueline T BalthazarDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA.
Artur MuszyńskiComplex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA.
Russell W CarlsonComplex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA.
William M ShaferDepartment of Microbiology and Immunology, Emory University School of Medicine, Atlanta, Georgia, USA The Emory Antibiotic Resistance Center, Emory University School of Medicine, Atlanta, Georgia, USA Laboratories of Bacterial Pathogenesis, Veterans Affairs Medical Center, Decatur, Georgia, USA wshafer@emory.edu.
Emory University · USUniversity of Georgia · USVeterans Health Administration · US

Funding

Trichomonas Typing SystemU19AI031496 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI HOBBS, MARCIA METZGAR · 1995 to 2014
$24.9M
The Atlantic Coast Sexually Transmitted Infection Cooperative Research Center (ACU19AI113170 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI JERSE, ANN E. · 2014 to 2018
$6.9M
Gonococci: Genetics of Resistance to PMN ProteinsR37AI021150 · NIAID · EMORY UNIVERSITY · PI SHAFER, WILLIAM MAURICE · 2010 to 2019
$3.9M
Gonococcal Mechanisms to Evade Host DefensesI01BX000112 · VA · VETERANS HEALTH ADMINISTRATION · PI SHAFER, WILLIAM MAURICE · 2009 to 2017
–
BLRD VA I01 BX000112NIAID NIH HHS R37 AI021150NIAID NIH HHS U19 AI031496NIAID NIH HHS U19 AI113170
6 · The paper itself

Abstract

During infection, the sexually transmitted pathogen Neisseria gonorrhoeae (the gonococcus) encounters numerous host-derived antimicrobials, including cationic antimicrobial peptides (CAMPs) produced by epithelial and phagocytic cells. CAMPs have both direct and indirect killing mechanisms and help link the innate and adaptive immune responses during infection. Gonococcal CAMP resistance is likely important for avoidance of host nonoxidative killing systems expressed by polymorphonuclear granulocytes (e.g., neutrophils) and intracellular survival. Previously studied gonococcal CAMP resistance mechanisms include modification of lipid A with phosphoethanolamine by LptA and export of CAMPs by the MtrCDE efflux pump. In the related pathogen Neisseria meningitidis, a two-component regulatory system (2CRS) termed MisR-MisS has been shown to contribute to the capacity of the meningococcus to resist CAMP killing. We report that the gonococcal MisR response regulator but not the MisS sensor kinase is involved in constitutive and inducible CAMP resistance and is also required for intrinsic low-level resistance to aminoglycosides. The 4- to 8-fold increased susceptibility of misR-deficient gonococci to CAMPs and aminoglycosides was independent of phosphoethanolamine decoration of lipid A and the levels of the MtrCDE efflux pump and seemed to correlate with a general increase in membrane permeability. Transcriptional profiling and biochemical studies confirmed that expression of lptA and mtrCDE was not impacted by the loss of MisR. However, several genes encoding proteins involved in membrane integrity and redox control gave evidence of being MisR regulated. We propose that MisR modulates the levels of gonococcal susceptibility to antimicrobials by influencing the expression of genes involved in determining membrane integrity.

Indexed as

AminoglycosidesAnti-Bacterial AgentsAntimicrobial Cationic PeptidesBacterial ProteinsDrug Resistance, BacterialGonorrheaHumansLipid ANeisseria gonorrhoeaeNeisseria meningitidisAminoglycosidesAnti-Bacterial AgentsAntimicrobial Cationic PeptidesBacterial ProteinsLipid A

Identifiers

PMID27216061
PMCPMC4958169
OpenAlexW2395565663

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.