Evidence map›Paper›PMID 26466961›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2015

Lipopolysaccharide Regulation of Intestinal Tight Junction Permeability Is Mediated by TLR4 Signal Transduction Pathway Activation of FAK and MyD88.

Shuhong Guo, Meghali Nighot, Rana Al-Sadi, Tarik Alhmoud, Prashant Nighot, Thomas Y Ma

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 201 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
201citing papers in PubMed, 2 pooled it
9.7field-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

201 citing papers in PubMed, 2 syntheses or guidelines pooled it, 401 citations in OpenAlex.

  1. Pooled it
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  13. Evaluation Profile of SicilianPlants (Basel, Switzerland) · 2026
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141 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

6 authors at 3 institutions in 1 country.

Shuhong GuoDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and Albuquerque Veterans Affairs Medical Center, Albuquerque, NM 87108.
Meghali NighotDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and.
Rana Al-SadiDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and Albuquerque Veterans Affairs Medical Center, Albuquerque, NM 87108.
Tarik AlhmoudDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and.
Prashant NighotDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and.
Thomas Y MaDepartment of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131; and Albuquerque Veterans Affairs Medical Center, Albuquerque, NM 87108 tma@salud.unm.edu.
University of New Mexico · USRaymond G. Murphy VA Medical Center · USVeterans Health Administration · US

Funding

WOMEN'S CANCERS RESEARCH PROGRAMP30CA118100 · NCI · UNIVERSITY OF NEW MEXICO HEALTH SCIS CTR · PI Yolanda Sanchez · 2005 to 2026
$57.1M
UNM HSC Clinical and Translational Science CenterUL1TR001449 · NCATS · UNIVERSITY OF NEW MEXICO HEALTH SCIS CTR · PI CAMPEN, MATTHEW J, PANDHI, NANCY · 2015 to 2024
$36.9M
TNF-alpha Regulation of Intestinal Paracellular TransportR01DK064165 · NIDDK · UNIVERSITY OF NEW MEXICO HEALTH SCIS CTR · PI MA, THOMAS Y · 2003 to 2018
$5.2M
Regulation of Intestinal Epithelial Tight Junction BarrierI01BX001151 · VA · ALBUQUERQUE VA MEDICAL CENTER · PI MA, THOMAS Y · 2011 to 2015
–
BLRD VA I01 BX001151Intramural VA VA999999NCATS NIH HHS UL1 TR001449NCI NIH HHS P30 CA118100NIDDK NIH HHS R01 DK064165NIDDK NIH HHS R01-DK-64165-01
6 · The paper itself

Abstract

Gut-derived bacterial LPS plays an essential role in inducing intestinal and systemic inflammatory responses and have been implicated as a pathogenic factor in necrotizing enterocolitis and inflammatory bowel disease. The defective intestinal tight junction barrier was shown to be an important factor contributing to the development of intestinal inflammation. LPS, at physiological concentrations, causes an increase in intestinal tight junction permeability (TJP) via a TLR4-dependent process; however, the intracellular mechanisms that mediate LPS regulation of intestinal TJP remain unclear. The aim of this study was to investigate the adaptor proteins and the signaling interactions that mediate LPS modulation of intestinal tight junction barrier using in vitro and in vivo model systems. LPS caused a TLR4-dependent activation of membrane-associated adaptor protein focal adhesion kinase (FAK) in Caco-2 monolayers. LPS caused an activation of both MyD88-dependent and -independent pathways. Small interfering RNA silencing of MyD88 prevented an LPS-induced increase in TJP. LPS caused MyD88-dependent activation of IL-1R-associated kinase 4. TLR4, FAK, and MyD88 were colocalized. Small interfering silencing of TLR4 inhibited TLR4-associated FAK activation, and FAK knockdown prevented MyD88 activation. In vivo studies also confirmed that the LPS-induced increase in mouse intestinal permeability was associated with FAK and MyD88 activation; knockdown of intestinal epithelial FAK prevented an LPS-induced increase in intestinal permeability. Additionally, high-dose LPS-induced intestinal inflammation was dependent on the TLR4/FAK/MyD88 signal transduction axis. To our knowledge, our data show for the first time that the LPS-induced increases in intestinal TJP and intestinal inflammation were regulated by TLR4-dependent activation of the FAK/MyD88/IL-1R-associated kinase 4 signaling pathway.

Indexed as

AnimalsCaco-2 CellsEnzyme ActivationFocal Adhesion Kinase 1HumansIntestinesLipopolysaccharidesMiceMice, KnockoutMyeloid Differentiation Factor 88PermeabilitySignal TransductionTight JunctionsToll-Like Receptor 4Focal Adhesion Kinase 1LipopolysaccharidesMYD88 protein, humanMyd88 protein, mouseMyeloid Differentiation Factor 88PTK2 protein, humanPtk2 protein, mouseTLR4 protein, humanTlr4 protein, mouseToll-Like Receptor 4

Identifiers

PMID26466961
PMCPMC4637237
OpenAlexW2211097356

What OpenQuestion holds

Textmetadata
LicenceTDM
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.