PMID- 36562807 OWN - NLM STAT- MEDLINE DCOM- 20230412 LR - 20230412 IS - 1437-1596 (Electronic) IS - 0937-9827 (Linking) VI - 137 IP - 3 DP - 2023 May TI - Role of integrin and its potential as a novel postmortem biomarker in traumatic axonal injury. PG - 843-849 LID - 10.1007/s00414-022-02938-3 [doi] AB - Traumatic axonal injury (TAI) accounts for a large proportion of the mortality of traumatic brain injury (TBI). The diagnosis of TAI is currently of limited use for medicolegal purposes. It is known that axons in TAI are diffusely damaged by secondary processes other than direct head injury. However, the physiopathological mechanism of TAI is still elusive. The present study used RGD peptide, an antagonist of the mechanotransduction protein integrin, to explore the role of integrin-transmitted mechanical signalling in the pathogenesis of rat TAI. The rats were subjected to a linearly accelerating load, and changes in beta-amyloid precursor protein (beta-APP) expression, skeleton ultrastructure, skeleton protein neurofilament light (NF-L), and alpha-tubulin in the brainstem were observed, indicating that RGD could relieve the severity of axonal injury in TAI rats. In addition, the expression of beta-integrin was stronger and centralized in the brainstem of the deceased died from TAI compared to other nonviolent causes. This study examined the pathophysiology and biomechanics of TAI and assessed the role of integrin in the injury of microtubules and neurofilaments in TAI. Thus, we propose that integrin-mediated cytoskeletal injury plays an important role in TAI and that integrin has the potential as a biomarker for TAI. CI - (c) 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. FAU - Yijie, Duan AU - Yijie D AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. FAU - Weisheng, Huang AU - Weisheng H AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. FAU - Ji, Zhang AU - Ji Z AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. FAU - Jiao, Mu AU - Jiao M AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. FAU - Yiwu, Zhou AU - Yiwu Z AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. zhouyiwu@outlook.com. FAU - Hongmei, Dong AU - Hongmei D AUID- ORCID: 0000-0002-1086-1002 AD - Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Hankou, Wuhan, People's Republic of China. hongmeidong1@hotmail.com. LA - eng GR - 81102298/National Natural Science Foundation Youth Fund/ GR - 81471821/National Natural Science Foundation of China/ PT - Journal Article DEP - 20221223 PL - Germany TA - Int J Legal Med JT - International journal of legal medicine JID - 9101456 RN - 0 (Biomarkers) SB - IM MH - Rats MH - Animals MH - Rats, Sprague-Dawley MH - *Brain Injuries/pathology MH - Mechanotransduction, Cellular MH - Immunohistochemistry MH - Axons/metabolism/pathology MH - Biomarkers/metabolism MH - *Diffuse Axonal Injury/etiology/metabolism/pathology OTO - NOTNLM OT - Brainstem OT - Integrin OT - Microtubule OT - Neurofilament OT - Traumatic axonal injury EDAT- 2022/12/24 06:00 MHDA- 2023/04/12 06:41 CRDT- 2022/12/23 11:13 PHST- 2022/04/08 00:00 [received] PHST- 2022/12/07 00:00 [accepted] PHST- 2023/04/12 06:41 [medline] PHST- 2022/12/24 06:00 [pubmed] PHST- 2022/12/23 11:13 [entrez] AID - 10.1007/s00414-022-02938-3 [pii] AID - 10.1007/s00414-022-02938-3 [doi] PST - ppublish SO - Int J Legal Med. 2023 May;137(3):843-849. doi: 10.1007/s00414-022-02938-3. Epub 2022 Dec 23.