Evidence map›Paper›PMID 42786914›Full record

ArticleClinical and translational medicine2026

ACP5-positive macrophages contribute to cerebral oedema and neuroinflammation after traumatic brain injury.

Dang Hanhan, He Kun, Zhang Yulian, Zhang Chuanpeng, Zhang Yunsheng, Wang Zixi, Yang Xu, Chen Pengyu, Zhang Li, Yu Yanbing

Abstract read
In one paragraph

Article in Clinical and translational medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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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

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Dang Hanhan *China-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.ORCID https://orcid.org/0000-0001-6243-3854
He Kun *Department of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.ORCID https://orcid.org/0000-0002-7535-0617
Zhang Yulian *Department of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.
Zhang ChuanpengDepartment of Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland, USA.
Zhang YunshengDepartment of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.ORCID https://orcid.org/0009-0007-5715-9150
Wang ZixiDepartment of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.
Yang XuDepartment of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.ORCID https://orcid.org/0000-0001-7737-1553
Chen PengyuDepartment of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.ORCID https://orcid.org/0000-0003-2981-0149
Zhang LiDepartment of Neurosurgery, China-Japan Friendship Hospital, Beijing, China.
Yu YanbingChina-Japan Friendship Hospital (Institute of Clinical Medical Sciences), Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.ORCID https://orcid.org/0000-0002-5371-466X

Funding

Beijing Natural Science Foundation L242112Capital Health Development Research Special Project 2026-1-4061China-Japan Friendship Hospital ZRJY2024-QM07National High Level Hospital Clinical Research Funding of China 2025-NHLHCRF-XKJS-A-01National Natural Science Foundation of China 32300816National Natural Science Foundation of China 32471035
6 · The paper itself

Abstract

backgroundTraumatic brain injury (TBI) is a leading cause of death and long-term disability worldwide. Secondary cerebral oedema, driven by neuroinflammation and blood-brain barrier (BBB) disruption, critically determines poor outcomes, yet effective targeted therapies remain absent. This study aimed to identify immune cell subsets associated with post-TBI cerebral oedema and to explore their functional contributions in preclinical models.

methodsWe integrated single-cell transcriptomic datasets from a mouse TBI model (GSE175430) and human intracerebral haemorrhage (ICH) perihaematomal oedema samples (GSE266873) with our previously published temporal bulk RNA-seq profiling data. Through cross-species comparative analysis, Mfuzz clustering, AUCell scoring and gene set enrichment analysis (GSEA), Acp5 was identified as an oedema-associated signature gene, and its macrophage-enriched expression pattern was supported by single-cell profiling and immunofluorescence colocalisation. Using the controlled cortical impact (CCI) model, we validated Acp5 expression dynamics across injury severities. Pharmacological inhibition (AubipyOMe) and genetic knockout of Acp5 were employed to assess brain oedema, neuroinflammation, neurological function and long-term cognitive recovery.

resultsA previously unrecognised population of ACP5-positive monocytes/macrophages infiltrated the brain parenchyma within 1-3 days post-injury, coinciding with peak oedema severity and neurological deficits. Inhibiting ACP5 significantly reduced brain water content, BBB leakage and proinflammatory cytokines, while improving sensorimotor function. Mechanistically, ACP5-positive macrophages were associated with CSF2-related JAK/STAT and NF-κB signalling. Genetic Acp5 ablation attenuated acute macrophage infiltration and neuroinflammation, and was associated with improved long-term behavioural outcomes.

conclusionsACP5-positive macrophages represent an injury-associated myeloid population that contributes to neuroinflammatory and oedema-related phenotypes after experimental TBI. Pharmacological and genetic findings provide preclinical evidence supporting further investigation of ACP5 and CSF2-related signalling in secondary TBI injury.

Indexed as

Brain EdemaBrain Injuries, TraumaticMacrophagesNeuroinflammatory DiseasesProtein Tyrosine PhosphatasesAnimalsDisease Models, AnimalHumansMaleMiceProtein Tyrosine Phosphatasesbrain oedemamacrophageneuroinflammationsecondary injurytraumatic brain injury (TBI)

Identifiers

PMID42786914
PMCPMC13613102

What Socratic holds

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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 Socratic graph.