Evidence map›Paper›PMID 23050849›Full record

ArticleParasites & vectors2012

Ixodes scapularis saliva mitigates inflammatory cytokine secretion during Anaplasma phagocytophilum stimulation of immune cells.

Gang Chen, Maiara S Severo, Mohammad Sohail, Olivia S Sakhon, Stephen K Wikel, Michail Kotsyfakis, Joao H F Pedra

Abstract read
In one paragraph

Article in Parasites & vectors, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

31 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  20. For Whom the Bell Tolls (and Nods): Spit-acular Saliva.Current tropical medicine reports · 2016
    Article
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

7 authors.

Gang ChenCenter for Disease Vector Research and Department of Entomology, University of California-Riverside, Riverside, CA 92521, USA.
Maiara S Severo
Mohammad Sohail
Olivia S Sakhon
Stephen K Wikel
Michail Kotsyfakis
Joao H F Pedra

Funding

Rickettsial Immunity During Tick TransmissionR01AI093653 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI PEDRA, JOAO · 2011 to 2015
$1.8M
NCEZID CDC HHS K01 CK000101NIAID NIH HHS R01 AI093653
6 · The paper itself

Abstract

backgroundIxodes scapularis saliva enables the transmission of infectious agents to the mammalian host due to its immunomodulatory, anesthetic and anti-coagulant properties. However, how I. scapularis saliva influences host cytokine secretion in the presence of the obligate intracellular rickettsial pathogen Anaplasma phagocytophilum remains elusive.

methodsBone marrow derived macrophages (BMDMs) were stimulated with pathogen associated molecular patterns (PAMPs) and A. phagocytophilum. Cytokine secretion was measured in the presence and absence of I. scapularis saliva. Human peripheral blood mononuclear cells (PBMCs) were also stimulated with Tumor Necrosis Factor (TNF)-α in the presence and absence of I. scapularis saliva and interleukin (IL)-8 was measured.

resultsI. scapularis saliva inhibits inflammatory cytokine secretion by macrophages during stimulation of Toll-like (TLR) and Nod-like receptor (NLR) signaling pathways. The effect of I. scapularis saliva on immune cells is not restricted to murine macrophages because decreasing levels of interleukin (IL)-8 were observed after TNF-α stimulation of human peripheral blood mononuclear cells. I. scapularis saliva also mitigates pro-inflammatory cytokine response by murine macrophages during challenge with A. phagocytophilum.

conclusionsThese findings suggest that I. scapularis may inhibit inflammatory cytokine secretion during rickettsial transmission at the vector-host interface.

Indexed as

AdultAnaplasma phagocytophilumAnimalsCytokinesHumansImmunologic FactorsIxodesLeukocytes, MononuclearMacrophagesMiceMice, Inbred C57BLSalivaCytokinesImmunologic Factors

Identifiers

PMID23050849
PMCPMC3503595

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LicenceCC BY
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Registered trials

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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.