Secondary injury and inflammation after intracerebral haemorrhage : a systematic review and meta-analysis of molecular markers in patient brain tissue

© Author(s) (or their employer(s)) 2022. Re-use permitted under CC BY. Published by BMJ..

BACKGROUND: Inflammatory responses to intracerebral haemorrhage (ICH) are potential therapeutic targets. We aimed to quantify molecular markers of inflammation in human brain tissue after ICH compared with controls using meta-analysis.

METHODS: We searched OVID MEDLINE (1946-) and Embase (1974-) in June 2020 for studies that reported any measure of a molecular marker of inflammation in brain tissue from five or more adults after ICH. We assessed risk of bias using a modified Newcastle-Ottawa Scale (mNOS; mNOS score 0-9; 9 indicates low bias), extracted aggregate data, and used random effects meta-analysis to pool associations of molecules where more than two independent case-control studies reported the same outcome and Gene Ontology enrichment analysis to identify over-represented biological processes in pooled sets of differentially expressed molecules (International Prospective Register of Systematic Reviews ID: CRD42018110204).

RESULTS: Of 7501 studies identified, 44 were included: 6 were case series and 38 were case-control studies (median mNOS score 4, IQR 3-5). We extracted data from 21 491 analyses of 20 951 molecules reported by 38 case-control studies. Only one molecule (interleukin-1β protein) was quantified in three case-control studies (127 ICH cases vs 41 ICH-free controls), which found increased abundance of interleukin-1β protein after ICH (corrected standardised mean difference 1.74, 95% CI 0.28 to 3.21, p=0.036, I2=46%). Processes associated with interleukin-1β signalling were enriched in sets of molecules that were more abundant after ICH.

CONCLUSION: Interleukin-1β abundance is increased after ICH, but analyses of other inflammatory molecules after ICH lack replication. Interleukin-1β pathway modulators may optimise inflammatory responses to ICH and merit testing in clinical trials.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:93

Enthalten in:

Journal of neurology, neurosurgery, and psychiatry - 93(2022), 2 vom: 01. Feb., Seite 126-132

Sprache:

Englisch

Beteiligte Personen:

Loan, James Jm [VerfasserIn]
Kirby, Caoimhe [VerfasserIn]
Emelianova, Katherine [VerfasserIn]
Dando, Owen R [VerfasserIn]
Poon, Michael Tc [VerfasserIn]
Pimenova, Leisan [VerfasserIn]
Hardingham, Giles E [VerfasserIn]
McColl, Barry W [VerfasserIn]
Klijn, Catharina Jm [VerfasserIn]
Al-Shahi Salman, Rustam [VerfasserIn]
Schreuder, Floris Hbm [VerfasserIn]
Samarasekera, Neshika [VerfasserIn]

Links:

Volltext

Themen:

Biomarkers
Immunology
Journal Article
Meta-Analysis
Meta-analysis
Neuropathology
Research Support, Non-U.S. Gov't
Stroke
Systematic Review
Systematic reviews

Anmerkungen:

Date Completed 16.02.2022

Date Revised 10.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1136/jnnp-2021-327098

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM329071173