Evidence map›Paper›PMID 28881691›Full record

ArticleOncotarget2017

Critical role of matrix metallopeptidase 9 in postoperative cognitive dysfunction and age-dependent cognitive decline.

Jiangjiang Bi, Weiran Shan, Ailin Luo, Zhiyi Zuo

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

31 citing papers in PubMed, 43 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

4 authors at 2 institutions in 2 countries.

Jiangjiang BiDepartment of Anesthesiology, University of Virginia, Charlottesville, Virginia, USA.
Weiran ShanDepartment of Anesthesiology, University of Virginia, Charlottesville, Virginia, USA.
Ailin LuoDepartment of Anesthesiology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China.
Zhiyi ZuoDepartment of Anesthesiology, University of Virginia, Charlottesville, Virginia, USA.
University of Virginia · USTongji Hospital · CN

Funding

Volatile anesthetic effects on aging brainR01GM098308 · NIGMS · UNIVERSITY OF VIRGINIA · PI ZUO, ZHIYI · 2012 to 2015
$1.2M
NIGMS NIH HHS R01 GM098308
6 · The paper itself

Abstract

backgroundPostoperative cognitive dysfunction (POCD) is a significant clinical syndrome. Neuroinflammation is an important pathological process for POCD. However, it is not clear how systemic inflammation induced by surgery on peripheral tissues or organs is transmitted into the brain. We determined whether matrix metallopeptidase 9 (MMP9), a protein that can increase blood-brain barrier permeability, is critical in this transmission. The role of MMP9 in age-dependent cognitive decline was also determined.

methodsTwo-month old male C57BL/6J wild-type mice and MMP9

resultsSurgery increased the expression of interleukin 1β, interleukin 6 and ionized calcium binding adapter molecule 1, inflammation indicators, in the brain of the wild-type mice. Blood-brain barrier permeability was increased by surgery. Surgery also impaired the learning and memory of these mice. These surgical effects were absent in the MMP9

conclusionMMP9 is critical for transmission of systemic inflammation into the brain for POCD. MMP9 may also play a role in age-dependent cognitive decline.

Indexed as

age-dependent cognitive declinematrix metallopeptidase 9neuroinflammationpostoperative cognitive dysfunction

Identifiers

PMID28881691
PMCPMC5584292
OpenAlexW2589255792

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.