Evidence map›Paper›PMID 42022742›Full record

ArticleFrontiers in neuroscience2026

A novel clip-based nerve compression model with high stability and reproducibility for the study of chronic nerve injury associated with neuropathic pain.

Zhaoyang Guo, Wentao Zhang, Zhongju Liu, Yuexi Mou, Sai Yu, Hang Zhou, Hang Liu, Haitao Zhou, Xinliang Peng, Zhongyuan He and 4 more

Abstract read
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Article in Frontiers in neuroscience, 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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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

14 authors.

Zhaoyang Guo *Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Wentao Zhang *Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Zhongju Liu *Department of Plastic and Maxillofacial Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Yuexi MouDepartment of Joint Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Sai YuHospital of Chengdu Office of People's Government of Xizang Autonomous Region, Chengdu, China.
Hang ZhouDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Hang LiuDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Haitao ZhouDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Xinliang PengDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Zhongyuan HeDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Rui DengDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Wei FuDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Zhong-Liang DengDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Lei ChuDepartment of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: The pathogenesis of neuropathic pain (NP) is complex and remains incompletely understood, making it essential to establish animal models that can stably and reproducibly recapitulate pain behaviors and functional impairments. The conventional chronic constriction injury (CCI) model of the sciatic nerve is highly operator dependent, resulting in limited reproducibility. This study aimed to establish a NP model with improved stability and reproducibility. Methods: A NP model was generated by applying sustained and quantifiable mechanical compression to the rat sciatic nerve using a clip device. Pain-related behavioral tests, gait analysis, electrophysiological recordings, and histological and immunofluorescence analyses were conducted to systematically compare and validate the clip-compression model against the CCI model. Results: Quantitative measurements using a thin-film pressure sensor demonstrated that the clip applied a consistent force of 1.75 ± 0.17 N. Behavioral assessments showed that both the CCI and clip-compression models reliably induced pain hypersensitivity; however, the clip-compression model exhibited a more persistent and stable pain phenotype. Gait and electrophysiological evaluations revealed significant ipsilateral hind-limb gait dysfunction, reduced weight-bearing capacity, and impaired peripheral nerve conduction in the clip-compression model. Histological and immunofluorescence analyses indicated that both models caused nerve fascicle disorganization, myelin damage, and axonal degeneration. Notably, the clip-compression model was associated with relatively milder inflammatory cell infiltration, greater early preservation of myelin architecture, and maintained nerve trunk continuity, more closely resembling the pathological features of chronic nerve compression. Conclusion: This study establishes and systematically validates a novel clip-based nerve compression model of NP, providing a more stable, reliable, and reproducible animal model for mechanistic studies and therapeutic evaluation in NP research.

Indexed as

chronic nerve injuryclip-based compression modelneuropathic painreproducible animal modelsciatic nerve compression

Identifiers

PMID42022742
PMCPMC13095788

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