Evidence map›Paper›PMID 19841079›Full record

ArticleInfection and immunity2010

Mycobacterium leprae actively modulates the cytokine response in naive human monocytes.

Daniel Sinsimer, Dorothy Fallows, Blas Peixoto, James Krahenbuhl, Gilla Kaplan, Claudia Manca

Open access · greenAbstract read
In one paragraph

Article 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 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.1field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 54 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

6 authors at 2 institutions in 1 country.

Daniel SinsimerLaboratory of Mycobacterial Immunity and Pathogenesis, Public Health Research Institute Center, International Center for Public Health, University of Medicine and Dentistry of New Jersey, Newark, NJ 07103, USA.
Dorothy Fallows
Blas Peixoto
James Krahenbuhl
Gilla Kaplan
Claudia Manca
University Hospital, Newark · USLouisiana State University · US

Funding

Host-Pathogen Interactions and M.tb Drug ResistanceR01AI066046 · NIAID · UNIV OF MED/DENT OF NJ-NJ MEDICAL SCHOOL · PI KAPLAN, GILLA · 2006 to 2009
$1.3M
NIAID NIH HHS AI54631NIAID NIH HHS R01 AI066046
6 · The paper itself

Abstract

Leprosy is a chronic but treatable infectious disease caused by the intracellular pathogen Mycobacterium leprae. Host immunity to M. leprae determines the diversity of clinical manifestations seen in patients, from tuberculoid leprosy with robust production of Th1-type cytokines to lepromatous disease, characterized by elevated levels of Th2-type cytokines and a suboptimal proinflammatory response. Previous reports have indicated that M. leprae is a poor activator of macrophages and dendritic cells in vitro. To understand whether M. leprae fails to elicit an optimal Th1 immune response or actively interferes with its induction, we have examined the early interactions between M. leprae and monocytes from healthy human donors. We found that, in naïve monocytes, M. leprae induced high levels of the negative regulatory molecules MCP-1 and interleukin-1 (IL-1) receptor antagonist (IL-1Ra), while suppressing IL-6 production through phosphoinositide-3 kinase (PI3K)-dependent mechanisms. In addition, low levels of proinflammatory cytokines were observed in association with reduced activation of nuclear factor-kappaB (NF-kappaB) and delayed activation of IL-1beta-converting enzyme, ICE (caspase-1), in monocytes stimulated with M. leprae compared with Mycobacterium bovis BCG stimulation. Interestingly, although in itself a weak stimulator of cytokines, M. leprae primed the cells for increased production of tumor necrosis factor alpha and IL-10 in response to a strongly inducing secondary stimulus. Taken together, our results suggest that M. leprae plays an active role to control the release of cytokines from monocytes by providing both positive and negative regulatory signals via multiple signaling pathways involving PI3K, NF-kappaB, and caspase-1.

Indexed as

Cells, CulturedCytokinesGene Expression RegulationHumansLipopolysaccharidesMonocytesMycobacterium bovisMycobacterium lepraeNod2 Signaling Adaptor ProteinPhosphatidylinositol 3-KinasesToll-Like ReceptorsCytokinesLipopolysaccharidesNOD2 protein, humanNod2 Signaling Adaptor ProteinPhosphatidylinositol 3-KinasesToll-Like Receptors

Identifiers

PMID19841079
PMCPMC2798203
OpenAlexW2128761786

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.