1
|
Tang X, Yan K, Wang Y, Wang Y, Chen H, Xu J, Lu Y, Wang X, Liang J, Zhang X. Activation of PPAR-β/δ Attenuates Brain Injury by Suppressing Inflammation and Apoptosis in a Collagenase-Induced Intracerebral Hemorrhage Mouse Model. Neurochem Res 2020; 45:837-850. [PMID: 31939088 PMCID: PMC7078151 DOI: 10.1007/s11064-020-02956-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 12/02/2019] [Accepted: 01/07/2020] [Indexed: 01/01/2023]
Abstract
Brain injury has been proposed as the major cause of the poor outcomes associated with intracerebral hemorrhage (ICH). Emerging evidence indicates that the nuclear receptor, peroxisome proliferator-activated receptor β/δ (PPAR-β/δ), plays a crucial role in the pathological process of central nervous impairment. The present study was undertaken to evaluate the protective effects of PPAR-β/δ activation using a selective PPAR-β/δ agonist, GW0742, against brain injury after ICH in a mouse model. ICH was induced by intravenous injection of collagenase into the right caudate putamen. To examine the protective effect of PPAR-β/δ activation against ICH-induced brain injury, mice were either intraperitoneally injected with GW0742 (3 mg/kg, body weight) or saline (control group) 30 min before inducing ICH. Behavioral dysfunction was evaluated 24 and 72 h after injury. Then, all mice were killed to assess hematoma volume, brain water content, and blood-brain barrier (BBB) permeability. TUNEL and Nissl staining were performed to quantify the brain injury. The expression of PPAR-β/δ, interleukin (IL)-1β, tumor necrosis factor (TNF)-α, Bcl-2-related X-protein (Bax), and B-cell lymphoma 2 (Bcl-2) in the perihematomal area was examined by immunohistochemistry and western blotting analysis. Mice treated with GW0742 showed significantly less severe behavioral deficits compared to the control group, accompanied by increased expression of PPAR-β/δ and Bcl-2, and increased expression of IL-1β, TNF-α, and Bax decreased simultaneously in the GW0742-treated group. Furthermore, the GW0742-pretreated group showed significantly less brain edema and BBB leakage. Neuronal loss was attenuated, and the number of apoptotic neuronal cells in perihematomal tissues reduced, in the GW0742-pretreated group compared to the control group. However, the hematoma volume did not decrease significantly on day 3 after ICH. These results suggest that the activation of PPAR-β/δ exerts a neuroprotective effect on ICH-induced brain injury, possibly through anti-inflammatory and anti-apoptotic pathways.
Collapse
Affiliation(s)
- Xiangming Tang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China
| | - Kunning Yan
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China
| | - Yingge Wang
- Department of Neurology, Affiliated Hospital of Yangzhou University, Yangzhou, 225001, China
| | - Yaping Wang
- Department of Electrocardiogram, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou Mental Health Centre, Yangzhou, 225000, China
| | - Hongmei Chen
- School of Nursing, Yangzhou University, Yangzhou, 225009, China
| | - Jiang Xu
- General Hospital of Xuzhou Mining Group, Xuzhou, 221006, China
| | - Yaoyao Lu
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China
| | - Xiaohong Wang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China
| | - Jingyan Liang
- Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China. .,Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Yangzhou University, Yangzhou, China. .,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses, Yangzhou, China.
| | - Xinjiang Zhang
- Department of Neurology, Affiliated Hospital of Yangzhou University, Yangzhou, 225001, China.
| |
Collapse
|