Evidence map›Paper›PMID 32429999›Full record

ArticleJournal of neuroinflammation2020

Age-dependent involvement of gut mast cells and histamine in post-stroke inflammation.

Maria Pilar Blasco, Anjali Chauhan, Pedram Honarpisheh, Hilda Ahnstedt, John d'Aigle, Arunkumar Ganesan, Sriram Ayyaswamy, Frank Blixt, Susan Venable, Angela Major and 6 more

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
3.1field-weighted citation impact, top 7% 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

35 citing papers in PubMed, 68 citations in OpenAlex.

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  10. Regulation of histidine metabolism byActa pharmaceutica Sinica. B · 2025
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  11. p16Immunity & ageing : I & A · 2024
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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

16 authors at 4 institutions in 1 country.

Maria Pilar BlascoDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Anjali ChauhanDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Pedram HonarpishehDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Hilda AhnstedtDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
John d'AigleDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Arunkumar GanesanDepartment of Anesthesiology, Baylor College of Medicine, Houston, USA.
Sriram AyyaswamyDepartment of Anesthesiology, Baylor College of Medicine, Houston, USA.
Frank BlixtDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Susan VenableDepartment of Pathology and Immunology, Baylor College of Medicine, Houston, USA.
Angela MajorDepartment of Pathology and Immunology, Baylor College of Medicine, Houston, USA.
David DurganDepartment of Anesthesiology, Baylor College of Medicine, Houston, USA.
Anthony HaagDepartment of Pathology and Immunology, Baylor College of Medicine, Houston, USA.
Julia KoflerDepartment of Pathology, University of Pittsburg, Pittsburgh, USA.
Robert BryanDepartment of Anesthesiology, Baylor College of Medicine, Houston, USA.
Louise D McCulloughDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA.
Bhanu Priya GaneshDepartment of Neurology, University of Texas McGovern Medical School, Houston, USA. Bhanu.P.Ganesh@uth.tmc.edu.ORCID https://orcid.org/0000-0003-1575-7914
Baylor College of Medicine · USThe University of Texas Health Science Center at Houston · USPittsburg State University · USThe University of Texas Health Science Center · US

Funding

Tissue Analysis & Molecular Imaging CoreP30DK056338 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI James Versalovic · 2001 to 2026
$28.3M
Dynamic Non-Neuronal Interactions between the Gut Microbiota and the Brain in Aging and in Cerebral Amyloid AngiopathyRF1AG058463 · NIA · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI BRYAN, ROBERT M, MCCULLOUGH, LOUISE D. · 2017 to 2017
$3.7M
NRSA Training CoreTL1TR003169 · NCATS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI CHANDRA, JOYA, FROST, JEFFREY A. · 2019 to 2023
$3.7M
Reversing Age Related InflammationR01NS094543 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI MCCULLOUGH, LOUISE D. · 2016 to 2020
$2.8M
EXAMINING THE ROLE OF GUT DYSBIOSIS IN OBSTRUCTIVE SLEEP APNEA INDUCED HYPERTENSION.R01HL134838 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI DURGAN, DAVID J · 2018 to 2022
$2.0M
NIA NIH HHS AG058463NIA NIH HHS RF1 AG058463NIDDK NIH HHS DK56338NIDDK NIH HHS P30 DK056338NINDS NIH HHS NS094543NINDS NIH HHS R01 NS094543
6 · The paper itself

Abstract

backgroundRisk of stroke-related morbidity and mortality increases significantly with age. Aging is associated with chronic, low-grade inflammation, which is thought to contribute to the poorer outcomes after stroke seen in the elderly. Histamine (HA) is a major molecular mediator of inflammation, and mast cells residing in the gut are a primary source of histamine.

methodsStroke was induced in male C57BL/6 J mice at 3 months (young) and 20 months (aged) of age. Role of histamine after stroke was examined using young (Yg) and aged (Ag) mice; mice underwent MCAO surgery and were euthanized at 6 h, 24 h, and 7 days post-ischemia; sham mice received the same surgery but no MCAO. In this work, we evaluated whether worsened outcomes after experimental stroke in aged mice were associated with age-related changes in mast cells, histamine levels, and histamine receptor expression in the gut, brain, and plasma.

resultsWe found increased numbers of mast cells in the gut and the brain with aging. Using the middle cerebral artery occlusion (MCAO) model of ischemic stroke, we demonstrate that stroke leads to increased numbers of gut mast cells and gut histamine receptor expression levels. These gut-centric changes are associated with elevated levels of HA and other pro-inflammatory cytokines including IL-6, G-CSF, TNF-α, and IFN-γ in the peripheral circulation. Our data also shows that post-stroke gut inflammation led to a significant reduction of mucin-producing goblet cells and a loss of gut barrier integrity. Lastly, gut inflammation after stroke is associated with changes in the composition of the gut microbiota as early as 24-h post-stroke.

conclusionAn important theme emerging from our results is that acute inflammatory events following ischemic insults in the brain persist longer in the aged mice when compared to younger animals. Taken together, our findings implicate mast cell activation and histamine signaling as a part of peripheral inflammatory response after ischemic stroke, which are profound in aged animals. Interfering with histamine signaling orally might provide translational value to improve stroke outcome.

Indexed as

AgingAnimalsGastrointestinal MicrobiomeHistamineInflammationIntestinesMaleMast CellsMiceMice, Inbred C57BLStrokeHistamineCytokinesHistamineHistamine receptorIntestinal epitheliumMast cellsMicrobiomePost-stroke

Identifiers

PMID32429999
PMCPMC7236952
OpenAlexW3027291834

What OpenQuestion holds

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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.