Wu Jiang1, Maoqiang Li1, Fan He1, Zhenyu Bian1, Qifang He2, Xuepeng Wang1, Wangxiang Yao1, Liulong Zhu3. 1. Department of Orthopedics, Hangzhou First People's Hospital, Nanjing Medical University, No. 261 Huansha Road, Shangcheng District, Hangzhou 310006, China. 2. Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600 Yi Shan Road, Shanghai 200233, China. 3. Department of Orthopedics, Hangzhou First People's Hospital, Nanjing Medical University, No. 261 Huansha Road, Shangcheng District, Hangzhou 310006, China. Electronic address: drzhuliulong@sina.com.
Abstract
AIMS: The present study investigated the therapeutic efficacy of asiatic acid (AA) on spinal cord injury (SCI) as well as the underlying mechanisms. MAIN METHODS: Sprague-Dawley rats (n=150) were randomly assigned to five groups: sham, SCI, SCI+methylprednisolone (30mg/kg), SCI+AA (30mg/kg), and SCI+AA (75mg/kg). Motor function, histological changes, neutrophil infiltration, proinflammatory cytokine production, and oxidative stress as well as nuclear factor erythroid 2-related factor (Nrf)2, heme oxygenase (HO)-1, and nucleotide-binding domain-like receptor protein (NLRP)3 levels were evaluated. KEY FINDINGS: AA treatment increased Basso, Beattie and Bresnahan scores and inclined plane test scores that were reduced by SCI. In addition, AA suppressed myeloperoxidase activity and reduced the levels of interleukin-1β, -18, and -6 and tumor necrosis factor-α as well as reactive oxygen species (ROS), H2O2, and malondialdehyde levels while increasing superoxide dismutase activity and glutathione production. AA treatment results in the upregulation in Nrf2/HO-1 levels and downregulation of NLRP3 inflammasome protein expression in SC tissue. SIGNIFICANCE: AA protects against SCI via suppression of inflammation and oxidative stress. The underlying mechanism likely involves activation of Nrf2 and HO-1 and inhibition of ROS and the NLRP3 inflammasome pathway. AA has therapeutic potential for SCI treatment.
AIMS: The present study investigated the therapeutic efficacy of asiatic acid (AA) on spinal cord injury (SCI) as well as the underlying mechanisms. MAIN METHODS:Sprague-Dawley rats (n=150) were randomly assigned to five groups: sham, SCI, SCI+methylprednisolone (30mg/kg), SCI+AA (30mg/kg), and SCI+AA (75mg/kg). Motor function, histological changes, neutrophil infiltration, proinflammatory cytokine production, and oxidative stress as well as nuclear factor erythroid 2-related factor (Nrf)2, heme oxygenase (HO)-1, and nucleotide-binding domain-like receptor protein (NLRP)3 levels were evaluated. KEY FINDINGS: AA treatment increased Basso, Beattie and Bresnahan scores and inclined plane test scores that were reduced by SCI. In addition, AA suppressed myeloperoxidase activity and reduced the levels of interleukin-1β, -18, and -6 and tumor necrosis factor-α as well as reactive oxygen species (ROS), H2O2, and malondialdehyde levels while increasing superoxide dismutase activity and glutathione production. AA treatment results in the upregulation in Nrf2/HO-1 levels and downregulation of NLRP3 inflammasome protein expression in SC tissue. SIGNIFICANCE: AA protects against SCI via suppression of inflammation and oxidative stress. The underlying mechanism likely involves activation of Nrf2 and HO-1 and inhibition of ROS and the NLRP3 inflammasome pathway. AA has therapeutic potential for SCI treatment.
Authors: Nora E Gray; Armando Alcazar Magana; Parnian Lak; Kirsten M Wright; Joseph Quinn; Jan F Stevens; Claudia S Maier; Amala Soumyanath Journal: Phytochem Rev Date: 2017-09-20 Impact factor: 5.374
Authors: Andrzej Wróbel; Łukasz Zapała; Tomasz Kluz; Artur Rogowski; Marcin Misiek; Kajetan Juszczak; Jacek Sieńko; Daniela Gold; Klaudia Stangel-Wójcikiewicz; Ewa Poleszak; Piotr Radziszewski Journal: Int J Mol Sci Date: 2021-05-29 Impact factor: 5.923