Evidence map›Paper›PMID 17088347›Full record

ArticleInfection and immunity2007

Leishmania-derived murine monocyte chemoattractant protein 1 enhances the recruitment of a restrictive population of CC chemokine receptor 2-positive macrophages.

Sean M Conrad, Dalit Strauss-Ayali, Ann E Field, Matthias Mack, David M Mosser

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 43 citations in OpenAlex.

  1. Review
  2. Effect of transgenicIranian journal of basic medical sciences · 2021
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  9. Immunology and Genetic ofJournal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2018
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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

5 authors at 1 institution in 1 country.

Sean M ConradDepartment of Cell Biology and Molecular Genetics, Rm. 1103 Microbiology Bldg., University of Maryland, College Park, MD 20742, USA.
Dalit Strauss-Ayali
Ann E Field
Matthias Mack
David M Mosser
University of Maryland, College Park · US

Funding

Innate and adaptive immune responses to LeishmaniaR01AI055576 · NIAID · UNIV OF MARYLAND, COLLEGE PARK · PI MOSSER, DAVID M · 2005 to 2009
$1.5M
Innate and adaptive immune responses to LeishmaniaR21AI055576 · NIAID · UNIVERSITY OF MARYLAND COLLEGE PK CAMPUS · PI MOSSER, DAVID M · 2004 to 2004
$334k
NIAID NIH HHS R01 AI055576NIAID NIH HHS R21 AI055576
6 · The paper itself

Abstract

Transgenic Leishmania parasites that encode the murine chemokine monocyte chemoattractant protein 1 (MCP-1) were generated. These parasites transcribed MCP-1 mRNA and secreted MCP-1 protein. Infection of BALB/c, C57BL/6, or MCP-1 knockout (KO) mice with these parasites resulted in minimal lesion development with fewer parasites in the infected foot, lymph node, and spleen compared to wild-type-infected mice. In contrast, transgenic parasites caused substantial lesions with relatively high numbers of parasites in CC chemokine receptor 2 (CCR2) KO mice, indicating that the parasites are viable and healthy and that the lack of lesion development is CCR2 dependent. Prior infection of mice with transgenic parasites offered no protection to subsequent wild-type L. major challenge, suggesting that the transgenic parasites are controlled by an early innate immune response. Consistent with innate immunity, flow cytometry of cells from the ears of mice infected with transgenic parasites revealed an increase in the number of CCR2-positive macrophages by day 7 postinfection. The enumeration of transgenic parasites in ear lesions demonstrated a significant reduction in parasite numbers, which coincided with the increased CCR2-positive macrophage migration. CCR2-positive macrophages isolated from ears of mice infected with transgenic parasites contained virtually no parasites. In vitro studies revealed that optimal parasite killing required the recruitment of CCR2-positive macrophages, followed by stimulation with a combination of both MCP-1 and gamma interferon (IFN-gamma). This work suggests that the parasite-derived MCP-1 can recruit a restrictive population of CCR2-positive macrophages into lesions that can be optimally stimulated by MCP-1 and IFN-gamma to efficiently kill Leishmania parasites.

Indexed as

AnimalsChemokine CCL2Disease Models, AnimalEarFlow CytometryFootImmunity, InnateInterferon-gammaLeishmania majorLeishmaniasis, CutaneousLymph NodesMacrophagesMiceMice, Inbred BALB CMice, Inbred C57BLMice, KnockoutCcr2 protein, mouseChemokine CCL2Interferon-gammaReceptors, CCR2Receptors, ChemokineRecombinant Proteins

Identifiers

PMID17088347
PMCPMC1828528
OpenAlexW2153264962

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.