Evidence map›Paper›PMID 31199577›Full record

ArticleAging cell2019

Advanced age promotes colonic dysfunction and gut-derived lung infection after stroke.

Shu Wen Wen, Raymond Shim, Luke Ho, Brooke J Wanrooy, Yogitha N Srikhanta, Kathryn Prame Kumar, Alyce J Nicholls, S J Shen, Tara Sepehrizadeh, Michael de Veer and 5 more

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 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

15 authors at 4 institutions in 2 countries.

Shu Wen WenDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Raymond ShimDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Luke HoDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Brooke J WanrooyDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Yogitha N SrikhantaDepartment of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.
Kathryn Prame KumarDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Alyce J NichollsDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
S J ShenDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.
Tara SepehrizadehMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Michael de VeerMonash Biomedical Imaging, Monash University, Clayton, Victoria, Australia.
Velandai K SrikanthDepartment of Medicine (Academic Unit), Peninsula Clinical School, Central Clinical School, Monash University, Frankston, Victoria, Australia.
Henry MaStroke and Ageing Research Group, Department of Medicine, School of Clinical Sciences, Monash Medical Centre, Monash University, Clayton, Victoria, Australia.
Thanh G PhanStroke and Ageing Research Group, Department of Medicine, School of Clinical Sciences, Monash Medical Centre, Monash University, Clayton, Victoria, Australia.
Dena LyrasDepartment of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.
Connie H Y WongDepartment of Medicine, Centre for Inflammatory Diseases, School of Clinical Sciences, Monash University, Clayton, Victoria, Australia.ORCID 0000-0002-9020-1847
Monash Medical Centre · AUDiscovery Institute · USMonash University · AUPeninsula Health · AU

Funding

CSL Centenary FellowshipNational Health and Medical Research Council APP1104036National Heart Foundation of Australia 100863
6 · The paper itself

Abstract

Bacterial infection a leading cause of death among patients with stroke, with elderly patients often presenting with more debilitating outcomes. The findings from our retrospective study, supported by previous clinical reports, showed that increasing age is an early predictor for developing fatal infectious complications after stroke. However, exactly how and why older individuals are more susceptible to infection after stroke remains unclear. Using a mouse model of transient ischaemic stroke, we demonstrate that older mice (>12 months) present with greater spontaneous bacterial lung infections compared to their younger counterparts (7-10 weeks) after stroke. Importantly, we provide evidence that older poststroke mice exhibited elevated intestinal inflammation and disruption in gut barriers critical in maintaining colonic integrity following stroke, including reduced expression of mucin and tight junction proteins. In addition, our data support the notion that the localized pro-inflammatory microenvironment driven by increased tumour necrosis factor-α production in the colon of older mice facilitates the translocation and dissemination of orally inoculated bacteria to the lung following stroke onset. Therefore, findings of this study demonstrate that exacerbated dysfunction of the intestinal barrier in advanced age promotes translocation of gut-derived bacteria and contributes to the increased risk to poststroke bacterial infection.

Indexed as

Acute DiseaseAgedAgingAnimalsCohort StudiesColonDisease Models, AnimalFemaleHumansMaleMiceMice, Inbred C57BLPneumoniaRetrospective StudiesRisk FactorsStrokeagingbacteriacoloninfectionstroke

Identifiers

PMID31199577
PMCPMC6718525
OpenAlexW2951440104

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.