Evidence map›Paper›PMID 25540015›Full record

ArticleJournal of neuroinflammation2014

TNFR1-JNK signaling is the shared pathway of neuroinflammation and neurovascular damage after LPS-sensitized hypoxic-ischemic injury in the immature brain.

Lan-Wan Wang, Ying-Chao Chang, Shyi-Jou Chen, Chien-Hang Tseng, Yi-Fang Tu, Nan-Shih Liao, Chao-Ching Huang, Chien-Jung Ho

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
10.6field-weighted citation impact, top 2% 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

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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  10. Impact of TNF and IL-33 Cytokines on Mast Cells in Neuroinflammation.International journal of molecular sciences · 2024
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  12. Heat-killedBioengineering & translational medicine · 2023
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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

8 authors at 6 institutions in 1 country.

Lan-Wan WangDepartment of Pediatrics, Chi Mei Medical Center, Tainan, 710, Taiwan. lanwan@ms67.url.com.tw.
Ying-Chao ChangDepartment of Pediatrics, Chang Gung Memorial Hospital - Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, 833, Taiwan. chao8725@ms16.hinet.net.
Shyi-Jou ChenDepartment of Pediatrics, Tri-Service General Hospital, National Defense Medical Center, Taipei, 114, Taiwan. pedneuchen@hotmail.com.
Chien-Hang TsengDepartment of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, 704, Taiwan. chiens16984129@gmail.com.
Yi-Fang TuDepartment of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, 704, Taiwan. nckutu@gmail.com.
Nan-Shih LiaoInstitute of Molecular Biology, Academia Sinica, Taipei, 115, Taiwan. mbfelix@imb.sinica.edu.tw.
Chao-Ching HuangDepartment of Pediatrics, College of Medicine, Taipei Medical University, #250, Wu-Hsing Street, Taipei, 11031, Taiwan. huangped@mail.ncku.edu.tw.
Chien-Jung HoDepartment of Pediatrics, College of Medicine, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, 704, Taiwan. z8408140@email.ncku.edu.tw.
National Cheng Kung University Hospital · TWChang Gung University · TWChi Mei Medical Center · TWInstitute of Molecular Biology, Academia Sinica · TWNational Defense Medical Center · TWTaipei Medical University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHypoxic-ischemia (HI) and inflammation are the two major pathogenic mechanisms of brain injury in very preterm infants. The neurovascular unit is the major target of HI injury in the immature brain. Systemic inflammation may worsen HI by up-regulating neuroinflammation and disrupting the blood-brain barrier (BBB). Since neurons and oligodendrocytes, microvascular endothelial cells, and microglia may closely interact with each other, there may be a common signaling pathway leading to neuroinflammation and neurovascular damage after injury in the immature brain. TNF-α is a key pro-inflammatory cytokine that acts through the TNF receptor (TNFR), and c-Jun N-terminal kinases (JNK) are important stress-responsive kinases.

objectiveTo determine if TNFR1-JNK signaling is a shared pathway underlying neuroinflammation and neurovascular injury after lipopolysaccharide (LPS)-sensitized HI in the immature brain.

methodsPostpartum (P) day-5 mice received LPS or normal saline (NS) injection before HI. Immunohistochemistry, immunoblotting and TNFR1- and TNFR2-knockout mouse pups were used to determine neuroinflammation, BBB damage, TNF-α expression, JNK activation, and cell apoptosis. The cellular distribution of p-JNK, TNFR1/TNFR2 and cleaved caspase-3 were examined using immunofluorescent staining.

resultsThe LPS + HI group had significantly greater up-regulation of activated microglia, TNF-α and TNFR1 expression, and increases of BBB disruption and cleaved caspase-3 levels at 24 hours post-insult, and showed more cortical and white matter injury on P17 than the control and NS + HI groups. Cleaved caspase-3 was highly expressed in microvascular endothelial cells, neurons, and oligodendroglial precursor cells. LPS-sensitized HI also induced JNK activation and up-regulation of TNFR1 but not TNFR2 expression in the microglia, endothelial cells, neurons, and oligodendrocyte progenitors, and most of the TNFR1-positive cells co-expressed p-JNK. Etanercept (a TNF-α inhibitor) and AS601245 (a JNK inhibitor) protected against LPS-sensitized HI brain injury. The TNFR1-knockout but not TNFR2-knockout pups had significant reduction in JNK activation, attenuation of microglial activation, BBB breakdown and cleaved caspase-3 expression, and showed markedly less cortical and white matter injury than the wild-type pups after LPS-sensitized HI.

conclusionTNFR1-JNK signaling is the shared pathway leading to neuroinflammation and neurovascular damage after LPS-sensitized HI in the immature brain.

Indexed as

AnimalsAnimals, NewbornBlood-Brain BarrierBrainFemaleHypoxia-Ischemia, BrainInflammationLipopolysaccharidesMaleMAP Kinase Signaling SystemMiceMice, 129 StrainMice, Inbred C57BLMice, KnockoutReceptors, Tumor Necrosis Factor, Type ILipopolysaccharidesReceptors, Tumor Necrosis Factor, Type ITnfrsf1a protein, mouse

Identifiers

PMID25540015
PMCPMC4300587
OpenAlexW2100659529

What OpenQuestion holds

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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.