1
|
Zhang J, Hao N, Li W, Chen Q, Chen Z, Feng H, Wu Y, Shi X. Simvastatin Upregulates Lipoxin A4 and Accelerates Neuroinflammation Resolution After Intracerebral Hemorrhage. Curr Neurovasc Res 2022; 19:321-332. [PMID: 36100985 PMCID: PMC9982195 DOI: 10.2174/1567202619666220913124627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 07/23/2022] [Accepted: 08/01/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Previous studies have demonstrated that statins can relieve inflammatory brain injury after intracerebral hemorrhage (ICH), but the mechanisms remain poorly characterized. This study aims to test whether simvastatin exerts an anti-inflammatory effect by regulating the proresolving mediators. METHODS First, male Sprague-Dawley rats had an injection of 200 μL autologous blood. Then, rats were randomly divided into groups treated with simvastatin (i.p. 2 mg/kg) or vehicle. Next, all rats underwent pro-resolving mediator lipoxin A4 (LXA4) level detection, flow cytometric, immunofluorescence, brain edema measurement, neurological scoring and western blot analysis. RESULTS We found that simvastatin significantly increased the plasma level of LXA4, an endogenous formyl-peptide receptor 2 (FPR2) agonist, in the early stage of ICH. Consistent with the effect of simvastatin, exogenous LXA4 administration also promoted apoptosis of the circulating neutrophils, reduced neutrophils brain infiltration, and ameliorated inflammatory brain injury after ICH. In addition, similar to simvastatin, exogenous LXA4 markedly decreased the level of phosphorylated p38 mitogen-activated protein kinase (MAPK) and the apoptosis-related proteins myeloid cell leukemia 1(Mcl-1)/Bax ratio (a decreased ratio represents the induction of apoptosis) in circulating neutrophils isolated from ICH rats. Notably, all of the aforementioned effects of simvastatin on ICH were significantly abolished by Boc-2, a selective antagonist of FPR2. Moreover, simvastatin led to a similar Mcl-1/Bax ratio reduction as SB203580 (a p38 MAPK inhibitor), but it was abolished by P79350 (a p38 MAPK agonist). CONCLUSION Collectively, these results suggest that simvastatin ameliorates ICH-mediated inflammatory brain injury, possibly by upregulating the level of pro-resolving mediator LXA4 and further stimulating the FPR2/p38 MAPK signaling pathway.
Collapse
Affiliation(s)
- Jianbo Zhang
- Department of Neurosurgery, General Hospital of South Theater Command, Guangdong, 510010, China;,Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China;,These authors contributed equally to this work.
| | - Na Hao
- Department of Orthopedics, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400000, China;,These authors contributed equally to this work.
| | - Wei Li
- Department of Laboratory Medicine, Western Theater Command Air Force Hospital, Chengdu, 610065, China;,These authors contributed equally to this work.
| | - Qianwei Chen
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Zhi Chen
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Hua Feng
- Department of Neurosurgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Yao Wu
- Department of Neurosurgery, Chongqing University Three Gorges Hospital, Chongqing, 404031, China;,Address correspondence to these authors at the Department of Nutrition, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30, Gaotanyan Street, Chongqing, 400038, China; and Department of Neurosurgery, Chongqing University Three Gorges Hospital, No. 38, Gaosuntang Street, Chongqing, 404031, China; Tel: +86-023-58556880; +86-023-68765259; Faxs: +86-023-58556866; +86-023-65463954; E-mails: ;
| | - Xia Shi
- Department of Nutrition, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China,Address correspondence to these authors at the Department of Nutrition, Southwest Hospital, Third Military Medical University (Army Medical University), No. 30, Gaotanyan Street, Chongqing, 400038, China; and Department of Neurosurgery, Chongqing University Three Gorges Hospital, No. 38, Gaosuntang Street, Chongqing, 404031, China; Tel: +86-023-58556880; +86-023-68765259; Faxs: +86-023-58556866; +86-023-65463954; E-mails: ;
| |
Collapse
|
2
|
Li G, Wang S, Xiong Y, Gu H, Yang K, Yang X, Wang C, Wang C, Li Z, Zhao X. Prior statin and short-term outcomes of primary intracerebral hemorrhage: From a large-scale nationwide longitudinal registry. CNS Neurosci Ther 2022; 28:1240-1248. [PMID: 35603937 PMCID: PMC9253784 DOI: 10.1111/cns.13868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 12/16/2022] Open
Abstract
Introduction The relationship between statins and intracerebral hemorrhage outcomes is unclear. Aim We aimed to compare the in‐hospital mortality and evacuation of intracranial hematoma rates in patients with primary intracerebral hemorrhage between prior statin users and nonusers. Results The final study population included 66,263 patients. Multivariable logistics analyses showed that prior statin use was not associated with in‐hospital mortality for primary intracerebral hemorrhage (adjusted odd ratio 0.78, 95% CI 0.61–1.01), but reduced the proportion of patients undergoing evacuation of intracranial hematoma (adjusted odd ratio 0.70, 95% CI 0.61–0.82). Propensity score matching analyses yielded similar results. Conclusion Prior statin use was not associated with in‐hospital mortality but did reduce evacuation of intracranial hematoma rates.
Collapse
Affiliation(s)
- Guangshuo Li
- Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Shang Wang
- Neurocardiology Center, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yunyun Xiong
- Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Chinese Institute of Brain Research, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Hongqiu Gu
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Kaixuan Yang
- China National Clinical Research Center for Neurological Diseases, Beijing, China
| | - Xin Yang
- China National Clinical Research Center for Neurological Diseases, Beijing, China.,National Center for Healthcare Quality Management in Neurological Diseases, Beijing, China
| | - Chunjuan Wang
- China National Clinical Research Center for Neurological Diseases, Beijing, China.,National Center for Healthcare Quality Management in Neurological Diseases, Beijing, China
| | - Chuanying Wang
- Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Zixiao Li
- Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,Chinese Institute of Brain Research, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China.,Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China.,Center for Stroke, Beijing Institute for Brain Disorders, Beijing, China
| | - Xingquan Zhao
- Vascular Neurology, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.,China National Clinical Research Center for Neurological Diseases, Beijing, China
| |
Collapse
|
3
|
Bi R, Fang Z, You M, He Q, Hu B. Microglia Phenotype and Intracerebral Hemorrhage: A Balance of Yin and Yang. Front Cell Neurosci 2021; 15:765205. [PMID: 34720885 PMCID: PMC8549831 DOI: 10.3389/fncel.2021.765205] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/23/2021] [Indexed: 11/15/2022] Open
Abstract
Intracerebral hemorrhage (ICH) features extremely high rates of morbidity and mortality, with no specific and effective therapy. And local inflammation caused by the over-activated immune cells seriously damages the recovery of neurological function after ICH. Fortunately, immune intervention to microglia has provided new methods and ideas for ICH treatment. Microglia, as the resident immune cells in the brain, play vital roles in both tissue damage and repair processes after ICH. The perihematomal activated microglia not only arouse acute inflammatory responses, oxidative stress, excitotoxicity, and cytotoxicity to cause neuron death, but also show another phenotype that inhibit inflammation, clear hematoma and promote tissue regeneration. The proportion of microglia phenotypes determines the progression of brain tissue damage or repair after ICH. Therefore, microglia may be a promising and imperative therapeutic target for ICH. In this review, we discuss the dual functions of microglia in the brain after an ICH from immunological perspective, elaborate on the activation mechanism of perihematomal microglia, and summarize related therapeutic drugs researches.
Collapse
Affiliation(s)
- Rentang Bi
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi Fang
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mingfeng You
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Quanwei He
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bo Hu
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|