Evidence map›Paper›PMID 33936116›Full record

ArticleFrontiers in immunology2021

PD-L1 Improves Motor Function and Alleviates Neuropathic Pain in Male Mice After Spinal Cord Injury by Inhibiting MAPK Pathway.

Fanqi Kong, Kaiqiang Sun, Jian Zhu, Fudong Li, Feng Lin, Xiaofei Sun, Xi Luo, Changzhen Ren, Lantao Lu, ShuJie Zhao and 3 more

Open access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
6.7field-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

18 citing papers in PubMed, 51 citations in OpenAlex.

  1. Observational
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  9. Therapeutic implications for the PD-1 axis in cerebrovascular injury.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
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  11. Article
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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

13 authors at 3 institutions in 1 country.

Fanqi KongDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Kaiqiang SunDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Jian ZhuDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Fudong LiDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Feng LinDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Xiaofei SunDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Xi LuoDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Changzhen RenDepartment of Cardiology, Changzheng Hospital, Naval Medical University, Shanghai, China.
Lantao LuDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
ShuJie ZhaoDepartment of Orthopedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Jingchuan SunDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Yuan WangDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Jiangang ShiDepartment of Orthopedic Surgery, Spine Center, Changzheng Hospital, Naval Medical University, Shanghai, China.
Second Military Medical University · CNShanghai Changzheng Hospital · CNNanjing Medical University · CN

Funding

Advanced Software for MRI, PET, SPECT and CT Image AnalysisU24EB028980 · NIBIB · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI RUSINEK, HENRY · 2019 to 2021
$1.2M
NIBIB NIH HHS U24 EB028980
6 · The paper itself

Abstract

Background: Traumatic spinal cord injury (SCI) causes severe motor dysfunction and persistent central neuropathic pain (Nep), which has not yet been effectively cured. Programmed cell death ligand-1 (PD-L1) is typically produced by cancer cells and contributes to the immune-suppressive in tumor microenvironment. However, the role of PD-L1 in regulating inflammatory response and Nep after SCI remains unclear. A growing amount of researches have begun to investigate the effect of PD-L1 on macrophages and microglia in recent years. Considering the pivotal role of macrophages/microglia in the inflammatory response after SCI, we proposed the hypothesis that PD-L1 improved the recovery of locomotor and sensory functions after SCI through regulating macrophages and microglia. Methods: The mice SCI model was established to determine the changes in expression patterns of PD-L1. Meanwhile, we constructed PD-L1 knockout mice to observe differences in functional recovery and phenotypes of macrophages/microglia post-SCI. Results: In present study, PD-L1 was significantly upregulated after SCI and highly expressed on macrophages/microglia at the injury epicenter. PD-L1 knockout (KO) mice showed worse locomotor recovery and more serious pathological pain compared with wild-type (WT) mice. Furthermore, deletion of PD-L1 significantly increased the polarization of M1-like macrophages/microglia. Mechanistic analysis revealed that PD-L1 may improve functional outcomes following SCI by inhibiting phosphorylation of p38 and ERK1/2. Conclusions: Our observations implicate the involvement of PD-L1 in recovery of SCI and provide a new treatment strategy for the prevention and treatment of this traumatic condition.

Indexed as

AnimalsB7-H1 AntigenCells, CulturedDisease Models, AnimalExtracellular Signal-Regulated MAP KinasesHumansMaleMiceMice, Inbred C57BLMice, KnockoutMotor ActivityNeuralgiaRecovery of FunctionSignal TransductionSpinal Cord InjuriesB7-H1 AntigenExtracellular Signal-Regulated MAP KinasesERK1/2, p38macrophages/microglialneuropathic painPD-L1polarizationspinal cord injury

Identifiers

PMID33936116
PMCPMC8081847
OpenAlexW3129408413

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.