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논문 기본 정보

자료유형
학술저널
저자정보
Ho-Jin Lee (Seoul National University College of Medicine) Jiyoun Ju (Seoul National University Bundang Hospital) Eunjoo Choi (Seoul National University Bundang Hospital) Francis Sahngun Nahm (Seoul National University Bundang Hospital) Ghee Young Choe (Seoul National University Bundang Hospital) Pyung Bok Lee (Seoul National University Bundang Hospital)
저널정보
대한통증학회 The Korean Journal of Pain The Korean Journal of Pain 제34권 제4호
발행연도
2021.10
수록면
394 - 404 (11page)
DOI
10.3344/kjp.2021.34.4.394

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Background: We aimed to investigate the effect of epidural polydeoxyribonucleotide (PDRN) on mechanical allodynia and motor dysfunction in a rat model of lumbar foraminal stenosis (LFS). Methods: This study was conducted in two stages, using male Sprague-Dawley rats. The rats were randomly divided into eight groups. In the first stage, the groups were as follows: vehicle (V), sham (S), and epidural PDRN at 5 (P5), 8 (P8), and 10 (P10) mg/kg; and in the second stage, they were as follows: intraperitoneal PDRN 8 mg/ kg, epidural 3,7-dimethyl-1-propargilxanthine (DMPX) (0.1 mg/kg), and DMPX (0.1 mg/kg). The LFS model was established, except for the S group. After an epidural injection of the test solutions, von Frey and treadmill tests were conducted for 3 weeks. Subsequently, histopathologic examinations were conducted in the V, S, P5, and P10 groups. Results: A total of 65 rats were included. The P8 and P10 groups showed significant recovery from mechanical allodynia and motor dysfunction at all time points after drug administration compared to the V group. These effects were abolished by concomitant administration of DMPX. On histopathological examination, no epineurial inflammation or fibrosis was observed in the epidural PDRN groups. Conclusions: Epidural injection of PDRN significantly improves mechanical allodynia and motor dysfunction in a rat model of LFS, which is mediated by the spinal adenosine A2A receptor. The present data support the need for further research to determine the role of epidural PDRN in spinal stenosis treatment.

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