Evidence map›Paper›PMID 30581495›Full record

ArticleCellular and molecular bioengineering2018

Inflammation and Monocyte Recruitment due to Aging and Mechanical Stretch in Alveolar Epithelium are Inhibited by the Molecular Chaperone 4-phenylbutyrate.

M S Valentine, P A Link, J A Herbert, F J Kamga Gninzeko, M B Schneck, K Shankar, J Nkwocha, A M Reynolds, R L Heise

Abstract read
In one paragraph

Article in Cellular and molecular bioengineering, 2018. 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
2.4field-weighted citation impact, top 11% 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, 30 citations in OpenAlex.

  1. Trial
  2. Mechanobiology and Resolution of Lung Fibrosis.Annual review of physiology · 2026
    Review
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  19. Life (Basel, Switzerland) · 2021
    Review
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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

9 authors at 1 institution in 1 country.

M S ValentineDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
P A LinkDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
J A HerbertDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
F J Kamga GninzekoDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
M B SchneckDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
K ShankarDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
J NkwochaDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.
A M ReynoldsDepartment of Mathematics and Applied Mathematics, Virginia Commonwealth University, Richmond, VA 23220 USA.
R L HeiseDepartment of Biomedical Engineering, Virginia Commonwealth University, Box 843067, Richmond, VA 23284 USA.ORCID 0000-0002-6602-6700
Virginia Commonwealth University · US

Funding

Age Dependent Mechanical Ventilator-Induced Inflammation: Modeling & ExperimentsR01AG041823 · NIA · VIRGINIA COMMONWEALTH UNIVERSITY · PI HEISE, REBECCA LONG, REYNOLDS, ANGELA MARIE · 2012 to 2015
$1.2M
NIA NIH HHS R01 AG041823
6 · The paper itself

Abstract

introductionVentilator-Induced lung injury (VILI) is a form of acute lung injury that is initiated or exacerbated by mechanical ventilation. The aging lung is also more susceptible to injury. Harmful mechanical stretch of the alveolar epithelium is a recognized mechanism of VILI, yet little is known about how mechanical stretch affects aged epithelial cells. Disruption to Endoplasmic Reticulum (ER) homeostasis results in a condition known as ER stress that leads to disruption of cellular homeostasis, apoptosis, and inflammation. ER stress is increased with aging and other pathological stimuli. We hypothesized that age and mechanical stretch increase alveolar epithelial cells' proinflammatory responses that are mediated by ER stress. Furthermore, we believed that inhibition of this upstream mechanism with 4PBA, an ER stress reducer, alleviates subsequent inflammation and monocyte recruitment.

methodsType II alveolar epithelial cells (ATII) were harvested from C57Bl6/J mice 2 months (young) and 20 months (old) of age. The cells were cyclically stretched at 15% change in surface area for up to 24 hours. Prior to stretch, groups were administered 4PBA or vehicle as a control.

resultsMechanical stretch and age upregulated ER stress and proinflammatory MCP-1/CCL2 and MIP-1β/CCL4 chemokine expression in ATIIs. Age-matched and mismatched monocyte recruitment by ATII conditioned media was also quantified.

conclusionsAge increases susceptibility to stretch-induced ER stress and downstream inflammatory gene expression in a primary ATII epithelial cell model. Administration of 4PBA attenuated the increased ER stress and proinflammatory responses from stretch and/or age and significantly reduced monocyte migration to ATII conditioned media.

Indexed as

AgingAlveolar EpitheliumER StressInjuryMechanotransductionVILI

Identifiers

PMID30581495
PMCPMC6301058
OpenAlexW2809103134

What OpenQuestion holds

Textmetadata
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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.