Article: Effect of electroacupuncture of "Jiaji" (EX-B2) on NOD-like receptor protein 3 mediated pyroptosis in spinal cord tissue of rats with acute spinal cord injury.
Zhen ci yan jiu = Acupuncture research
2024 Volume 49, Issue 2, Page(s) 110–118
Abstract: Objectives: To observe the effect of electroacupuncture (EA) stimulation of "Jiaji"(EX-B2) on motor function, histomorphology, and expression of NOD-like receptor protein 3 (NLRP3) and N-terminal domain of gasdermin D (GSDMD-N) in the spinal cord tissue ...
Title translation | 夹脊电针对急性脊髓损伤大鼠脊髓组织NOD样受体热蛋白结构域相关蛋白3介导的细胞焦亡的影响. |
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Abstract | Objectives: To observe the effect of electroacupuncture (EA) stimulation of "Jiaji"(EX-B2) on motor function, histomorphology, and expression of NOD-like receptor protein 3 (NLRP3) and N-terminal domain of gasdermin D (GSDMD-N) in the spinal cord tissue of rats with spinal cord injury (SCI), so as to explore its mechanism underlying improvement of SCI. Methods: Forty eight female SD rats were randomly divided into sham surgery (sham), SCI model (model), EA, and NLRP3 agonist (monosodium urate, MSU) combined with Jiaji EA (MSU+EA) groups, with 12 rats in each group which were further divided into 3 d and 7 d subgroups, with 6 rats at each time point. Two EA groups received EA stimulation of EX-B2 with a frequency of 100 Hz, electrical current of 1-2 mA for 30 min, once a day for 3 or 7 days. After 5 min, 6 h, and 24 h of modeling, rats of the MSU+EA group received intraperitoneal injection of MSU (200 μg/kg, 200 μg/mL) . The motor function was evaluated using Basso-Beattie-Bresnahan (BBB) scale, the morphological structure of rat spinal cord tissue was observed by H.E. staining. The expression of pyroptosis related factors NLRP3, cleaved Caspase-1 and GSDMD-N of the spinal cord was observed by using immunohistochemistry and Western blot separately, the expression and localization of Iba-1 and GSDMD-N in the spinal cord tissue were observed using immunofluorescence double staining method. Results: Compared with the sham group, the BBB scores after modeling and on day 3 and 7 were decreased ( Conclusions: EA of EX-B2 can improve the motor function of SCI rats, which may be related to its functions in inhibiting pyroptosis of microglia mediated by NLRP3/Caspase-1 signaling pathway. |
MeSH term(s) | Animals ; Female ; Rats ; Caspase 1 ; Caspases ; Electroacupuncture ; NLR Family, Pyrin Domain-Containing 3 Protein/genetics ; Pyroptosis ; Rats, Sprague-Dawley ; Spinal Cord ; Spinal Cord Injuries/genetics ; Spinal Cord Injuries/therapy |
Chemical Substances | Caspase 1 (EC 3.4.22.36) ; Caspases (EC 3.4.22.-) ; NLR Family, Pyrin Domain-Containing 3 Protein ; Nlrp3 protein, rat |
Language | Chinese |
Publishing date | 2024-02-27 |
Publishing country | China |
Document type | Journal Article |
ZDB-ID | 1283179-7 |
ISSN | 1000-0607 |
ISSN | 1000-0607 |
DOI | 10.13702/j.1000-0607.20230701 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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