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Wang X, Hu J, Xie S, Li W, Zhang H, Huang L, Qian Z, Zhao C, Zhang L. Hidden role of microglia during neurodegenerative disorders and neurocritical care: A mitochondrial perspective. Int Immunopharmacol 2024; 142:113024. [PMID: 39217875 DOI: 10.1016/j.intimp.2024.113024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 08/04/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
The incidence of aging-related neurodegenerative disorders and neurocritical care diseases is increasing worldwide. Microglia, the main inflammatory cells in the brain, could be potential viable therapeutic targets for treating neurological diseases. Interestingly, mitochondrial functions, including energy metabolism, mitophagy and transfer, fission and fusion, and mitochondrial DNA expression, also change in activated microglia. Notably, mitochondria play an active and important role in the pathophysiology of neurodegenerative disorders and neurocritical care diseases. This review briefly summarizes the current knowledge on mitochondrial dysfunction in microglia in neurodegenerative disorders and neurocritical care diseases and comprehensively discusses the prospects of the application of neurological injury prevention and treatment targets by mitochondria.
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Affiliation(s)
- Xinrun Wang
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Jiyun Hu
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Shucai Xie
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Wenchao Li
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Haisong Zhang
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Li Huang
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Zhaoxin Qian
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China
| | - Chunguang Zhao
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China.
| | - Lina Zhang
- Department of Critical Care Medicine, Hunan Provincial Clinical Research Center for Critical Care Medicine, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, PR China.
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Mota Telles JP, Rosi Junior J, Yamaki VN, Rabelo NN, Teixeira MJ, Figueiredo EG. Homocysteine serum levels in patients with ruptured and unruptured intracranial aneurysms: a case-control study. ARQUIVOS DE NEURO-PSIQUIATRIA 2024; 82:1-6. [PMID: 38325387 PMCID: PMC10849822 DOI: 10.1055/s-0044-1779270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 11/21/2023] [Indexed: 02/09/2024]
Abstract
BACKGROUND There is very few data regarding homocysteine's influence on the formation and rupture of intracranial aneurysms. OBJECTIVE To compare homocysteine levels between patients with ruptured and unruptured intracranial aneurysms, and to evaluate possible influences of this molecule on vasospasm and functional outcomes. METHODS This is a retrospective, case-control study. We evaluated homocysteinemia differences between patients with ruptured and unruptured aneurysms; and the association of homocysteine levels with vasospasm and functional outcomes. Logistic regressions were performed. RESULTS A total of 348 participants were included: 114 (32.8%) with previous aneurysm rupture and 234 (67.2%) with unruptured aneurysms. Median homocysteine was 10.75µmol/L (IQR = 4.59) in patients with ruptured aneurysms and 11.5µmol/L (IQR = 5.84) in patients with unruptured aneurysms. No significant association was detected between homocysteine levels and rupture status (OR = 0.99, 95% CI = 0.96-1.04). Neither mild (>15µmol/L; OR = 1.25, 95% CI 0.32-4.12) nor moderate (>30µmol/L; OR = 1.0, 95% CI = 0.54-1.81) hyperhomocysteinemia demonstrated significant correlations with ruptured aneurysms. Neither univariate (OR = 0.86; 95% CI 0.71-1.0) nor multivariable age-adjusted (OR = 0.91; 95% CI = 0.75-1.05) models evidenced an association between homocysteine levels and vasospasm. Homocysteinemia did not influence excellent functional outcomes at 6 months (mRS≤1) (OR = 1.04; 95% CI = 0.94-1.16). CONCLUSION There were no differences regarding homocysteinemia between patients with ruptured and unruptured intracranial aneurysms. In patients with ruptured aneurysms, homocysteinemia was not associated with vasospasm or functional outcomes.
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Affiliation(s)
- João Paulo Mota Telles
- Universidade de São Paulo, Faculdade de Medicina, Departamento de Neurologia, São Paulo SP, Brazil.
| | - Jefferson Rosi Junior
- Universidade de São Paulo, Faculdade de Medicina, Divisão de Neurocirurgia, São Paulo SP, Brazil.
| | - Vitor Nagai Yamaki
- Universidade de São Paulo, Faculdade de Medicina, Divisão de Neurocirurgia, São Paulo SP, Brazil.
| | - Nicollas Nunes Rabelo
- Universidade de São Paulo, Faculdade de Medicina, Divisão de Neurocirurgia, São Paulo SP, Brazil.
| | - Manoel Jacobsen Teixeira
- Universidade de São Paulo, Faculdade de Medicina, Divisão de Neurocirurgia, São Paulo SP, Brazil.
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Yan X, He M, Huang H, Wang Q, Hu Y, Wang X, Jin M, Wang Y, Xia Y, Li Y, Chen G, Cheng J, Jia J. Endogenous H 2S targets mitochondria to promote continual phagocytosis of erythrocytes by microglia after intracerebral hemorrhage. Redox Biol 2022; 56:102442. [PMID: 35998432 PMCID: PMC9420393 DOI: 10.1016/j.redox.2022.102442] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/21/2022] [Accepted: 08/11/2022] [Indexed: 11/21/2022] Open
Abstract
Hematoma clearance, which is achieved largely by phagocytosis of erythrocytes in the hemorrhagic brain, limits injury and facilitates recovery following intracerebral hemorrhage (ICH). Efficient phagocytosis critically depends on the capacity of a single phagocyte to phagocytize dead cells continually. However, the mechanism underlying continual phagocytosis following ICH remains unclear. We aimed to investigate the mechanism in this study. By using ICH models, we found that the gasotransmitter hydrogen sulfide (H2S) is an endogenous modulator of continual phagocytosis following ICH. The expression of the H2S synthase cystathionine β-synthase (CBS) and CBS-derived H2S were elevated in brain-resident phagocytic microglia following ICH, which consequently promoted continual phagocytosis of erythrocytes by microglia. Microglia-specific deletion of CBS delayed spontaneous hematoma clearance via an H2S-mediated mechanism following ICH. Mechanistically, oxidation of CBS-derived endogenous H2S by sulfide-quinone oxidoreductase initiated reverse electron transfer at mitochondrial complex I, leading to superoxide production. Complex I-derived superoxide, in turn, activated uncoupling protein 2 (UCP2) to promote microglial phagocytosis of erythrocytes. Functionally, complex I and UCP2 were required for spontaneous hematoma clearance following ICH. Moreover, hyperhomocysteinemia, an established risk factor for stroke, impaired ICH-enhanced CBS expression and delayed hematoma resolution, while supplementing exogenous H2S accelerated hematoma clearance in mice with hyperhomocysteinemia. The results suggest that the microglial CBS-H2S-complex I axis is critical to continual phagocytosis following ICH and can be targeted to treat ICH. CBS-derived H2S is elevated in brain-resident phagocytic microglia following ICH. CBS-derived H2S promotes continual erythrophagocytosis and hematoma clearance. CBS-derived H2S promotes microglial phagocytosis via complex I-derived ROS. Hyperhomocysteinemia inhibits CBS expression to delay hematoma resolution. The CBS-H2S-complex I axis can be targeted to treat ICH.
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Affiliation(s)
- Xiaoling Yan
- Clinical Research Center of Neurological Disease of the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, 215123, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Meijun He
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Hui Huang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Qi Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Yu Hu
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Xiaoying Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Meng Jin
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, China
| | - Yi Wang
- Clinical Research Center of Neurological Disease of the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, 215123, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Yiqing Xia
- Clinical Research Center of Neurological Disease of the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, 215123, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China
| | - Yi Li
- Academy of Pharmacy, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, China
| | - Gang Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, China.
| | - Jian Cheng
- Clinical Research Center of Neurological Disease of the Second Affiliated Hospital of Soochow University, Soochow University, Suzhou, 215123, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases & Institute of Neuroscience, Soochow University, Suzhou, 215123, China.
| | - Jia Jia
- Jiangsu Key Laboratory of Neuropsychiatric Diseases & College of Pharmaceutical Sciences, Soochow University, Suzhou, China.
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Lu D, Wang L, Liu G, Wang S, Wang Y, Wu Y, Wang J, Sun X. Role of hydrogen sulfide in subarachnoid hemorrhage. CNS Neurosci Ther 2022; 28:805-817. [PMID: 35315575 PMCID: PMC9062544 DOI: 10.1111/cns.13828] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 02/19/2022] [Accepted: 03/09/2022] [Indexed: 12/15/2022] Open
Abstract
Subarachnoid hemorrhage (SAH) is a common acute and severe disease worldwide, which imposes a heavy burden on families and society. However, the current therapeutic strategies for SAH are unsatisfactory. Hydrogen sulfide (H2 S), as the third gas signaling molecule after carbon monoxide and nitric oxide, has been widely studied recently. There is growing evidence that H2 S has a promising future in the treatment of central nervous system diseases. In this review, we focus on the effects of H2 S in experimental SAH and elucidate the underlying mechanisms. We demonstrate that H2 S has neuroprotective effects and significantly reduces secondary damage caused by SAH via antioxidant, antiinflammatory, and antiapoptosis mechanisms, and by alleviating cerebral edema and vasospasm. Based on these findings, we believe that H2 S has great potential in the treatment of SAH and warrants further study to promote its early clinical application.
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Affiliation(s)
- Dengfeng Lu
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Lingling Wang
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Guangjie Liu
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Shixin Wang
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Yi Wang
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Yu Wu
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Jing Wang
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
| | - Xiaoou Sun
- Department of Neurosurgery & Brain and Nerve Research LaboratoryThe First Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina
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Zhang T, Zhang L, Nie K, Yang J, Lou H, Wang J, Huang S, Gu C, Yan M, Zhan R, Pan J. Admission Homocysteine as a Potential Predictor for Delayed Cerebral Ischemia After Aneurysmal Subarachnoid Hemorrhage. Front Surg 2022; 8:813607. [PMID: 35211499 PMCID: PMC8861177 DOI: 10.3389/fsurg.2021.813607] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/30/2021] [Indexed: 11/20/2022] Open
Abstract
Background Delayed cerebral ischemia (DCI) is a primary cause of poor prognosis after aneurysmal subarachnoid hemorrhage (aSAH) and needs close medical attention in clinical practice. Homocysteine (Hcy) has been implicated in cerebrovascular diseases. This study aimed to investigate whether serum Hcy could help to predict the occurrence of DCI in aSAH patients, and compare its diagnostic value with traditional methods. Methods We enrolled 241 aSAH patients in this study. Serum Hcy levels were collected from each patient. The baseline information was reviewed and analyzed. The binary logistic regression was used to explore the relation of serum Hcy levels with occurrence of DCI, and diagnostic performance of serum Hcy for predicting DCI was evaluated using a receiver operating characteristic (ROC) curve. Results The admission serum Hcy levels were found significantly higher in aSAH patients with DCI than those without (P < 0.001). The serum Hcy levels were positively correlated with the World Federation of Neurosurgical Societies (WFNS) scores, modified Fisher scores as well as Hunt and Hess scores at admission. Multivariate analysis revealed that occurrence of DCI was associated with serum Hcy levels (Odds Ratio [OR] = 1.257; 95% Confidence Interval [CI], 1.133–1.396, P < 0.001), modified Fisher scores (OR = 1.871; 95%CI, 1.111–3.150, P = 0.018) and Hunt and Hess scores (OR = 2.581; 95%CI, 1.222–5.452, P = 0.013) after adjusting for the significant variables in univariate analysis. Meanwhile, serum Hcy levels achieved good performance for DCI prediction (area under the curve [AUC], 0.781; 95%CI, 0.723–0.831, P < 0.001). Conclusion Serum homocysteine might have the potential to be a useful and cost-effective biomarker for predicting the occurrence of DCI in aSAH patients.
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Affiliation(s)
- Tiesong Zhang
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Luyuan Zhang
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Kehui Nie
- Neusoft Medical System, Shanghai, China
| | - Jun Yang
- Neusoft Medical System, Shanghai, China
| | - Haiyan Lou
- Department of Radiology, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jincheng Wang
- Department of Radiology, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Sicong Huang
- Department of Hepatobiliary and Pancreatic Surgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Chenjie Gu
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Min Yan
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Renya Zhan
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jianwei Pan
- Department of Neurosurgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
- *Correspondence: Jianwei Pan
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Lauretta MP, Melotti RM, Sangermano C, George AM, Badenes R, Bilotta F. Homocysteine Plasmatic Concentration in Brain-Injured Neurocritical Care Patients: Systematic Review of Clinical Evidence. J Clin Med 2022; 11:jcm11020394. [PMID: 35054087 PMCID: PMC8780007 DOI: 10.3390/jcm11020394] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/13/2021] [Accepted: 01/05/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Hyperhomocysteinemia (HHcy) is considered as an independent risk factor for several diseases, such as cardiovascular, neurological and autoimmune conditions. Atherothrombotic events, as a result of endothelial dysfunction and increased inflammation, are the main mechanisms involved in vascular damage. This review article reports clinical evidence on the relationship between the concentration of plasmatic homocysteine (Hcy) and acute brain injury (ABI) in neurocritical care patients. Materials and methods: a systematic search of articles in the PubMed and EMBASE databases was conducted, of which only complete studies, published in English in peer-reviewed journals, were included. Results: A total of 33 articles, which can be divided into the following 3 subchapters, are present: homocysteine and acute ischemic stroke (AIS); homocysteine and traumatic brain injury (TBI); homocysteine and intracranial hemorrhage (ICH)/subarachnoid hemorrhage (SAH). This confirms that HHcy is an independent risk factor for ABI and a marker of poor prognosis in the case of stroke, ICH, SAH and TBI. Conclusions: Several studies elucidate that Hcy levels influence the patient’s prognosis in ABI and, in some cases, the risk of recurrence. Hcy appears as biochemical marker that can be used by neuro-intensivists as an indicator for risk stratification. Moreover, a nutraceutical approach, including folic acid, the vitamins B6 and B12, reduces the risk of thrombosis, cardiovascular and neurological dysfunction in patients with severe HHcy that were admitted for neurocritical care.
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Affiliation(s)
- Maria Paola Lauretta
- Department of Anaesthesia and Pain Management, IRCCS Policlinico S. Orsola-Malpighi of Bologna, University of Bologna, 40138 Bologna, Italy;
| | - Rita Maria Melotti
- Department of Anaesthesia and Pain Management, IRCCS Policlinico S. Orsola-Malpighi of Bologna, Alma Mater Studiorum, University of Bologna, 40138 Bologna, Italy;
| | - Corinne Sangermano
- Department of Anaesthesia, Intensive Care and Pain Management, Umberto I Hospital, Sapienza University of Rome, 00161 Rome, Italy; (C.S.); (A.M.G.); (F.B.)
| | - Anneliya Maria George
- Department of Anaesthesia, Intensive Care and Pain Management, Umberto I Hospital, Sapienza University of Rome, 00161 Rome, Italy; (C.S.); (A.M.G.); (F.B.)
| | - Rafael Badenes
- Department of Anesthesiology and Surgical Trauma Intensive Care, Hospital Clínic Universitar de Valencia, University of Valencia, 46010 Valencia, Spain
- Correspondence:
| | - Federico Bilotta
- Department of Anaesthesia, Intensive Care and Pain Management, Umberto I Hospital, Sapienza University of Rome, 00161 Rome, Italy; (C.S.); (A.M.G.); (F.B.)
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Morais Filho ABD, Rego TLDH, Mendonça LDL, Almeida SSD, Nóbrega MLD, Palmieri TDO, Giustina GZD, Melo JP, Pinheiro FI, Guzen FP. The physiopathology of spontaneous hemorrhagic stroke: a systematic review. Rev Neurosci 2021; 32:631-658. [PMID: 33594841 DOI: 10.1515/revneuro-2020-0131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/22/2021] [Indexed: 12/29/2022]
Abstract
Hemorrhagic stroke (HS) is a major cause of death and disability worldwide, despite being less common, it presents more aggressively and leads to more severe sequelae than ischemic stroke. There are two types of HS: Intracerebral Hemorrhage (ICH) and Subarachnoid Hemorrhage (SAH), differing not only in the site of bleeding, but also in the mechanisms responsible for acute and subacute symptoms. This is a systematic review of databases in search of works of the last five years relating to the comprehension of both kinds of HS. Sixty two articles composed the direct findings of the recent literature and were further characterized to construct the pathophysiology in the order of events. The road to the understanding of the spontaneous HS pathophysiology is far from complete. Our findings show specific and individual results relating to the natural history of the disease of ICH and SAH, presenting common and different risk factors, distinct and similar clinical manifestations at onset or later days to weeks, and possible complications for both.
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Luo Q, Wu X, Nan Y, Chang W, Zhao P, Zhang Y, Su D, Liu Z. TRIM32/USP11 Balances ARID1A Stability and the Oncogenic/Tumor-Suppressive Status of Squamous Cell Carcinoma. Cell Rep 2021; 30:98-111.e5. [PMID: 31914402 DOI: 10.1016/j.celrep.2019.12.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/11/2019] [Accepted: 12/06/2019] [Indexed: 12/26/2022] Open
Abstract
Squamous cell carcinoma (SCC) is an aggressive epithelial malignancy, yet the molecular mechanisms underlying SCC development are elusive. ARID1A is frequently mutated in various cancer types, but both mutation rates and expression levels of ARID1A are ubiquitously low in SCCs. Here, we reveal that excessive protein degradation mediated by the ubiquitin-proteasome system (UPS) contributes to the loss of ARID1A expression in SCC. We identify that the E3 ligase TRIM32 and the deubiquitinase USP11 play key roles in controlling ARID1A stability. TRIM32 depletion inhibits SCC cell proliferation, metastasis, and chemoresistance by stabilizing ARID1A, while USP11 depletion promotes SCC development by promoting ARID1A degradation. We show that syndecan-2 (SDC2) is the downstream target of both ARID1A and USP11 and that SDC2 depletion abolishes the oncogenic function of ARID1A loss. In summary, our data reveal UPS-mediated protein degradation as a mechanism underlying ARID1A loss and propose an important role for the TRIM32/USP11-ARID1A-SDC2 axis in SCC.
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Affiliation(s)
- Qingyu Luo
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xiaowei Wu
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Yabing Nan
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Wan Chang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Pengfei Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Yiping Zhang
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Dan Su
- Department of Pathology, Zhejiang Cancer Hospital, Zhejiang 310022, China
| | - Zhihua Liu
- State Key Laboratory of Molecular Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
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Prognostic Significance of Homocysteine Level on Neurological Outcome in Brain Arteriovenous Malformations. DISEASE MARKERS 2020; 2020:6661475. [PMID: 33312268 PMCID: PMC7721487 DOI: 10.1155/2020/6661475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 11/17/2022]
Abstract
Objective We aimed to investigate the serum homocysteine (Hcy) level in patients with brain arteriovenous malformation (bAVM) and their impact on neurological outcome during hospitalization. Method We retrospectively reviewed patients diagnosed with bAVMs in Beijing Tiantan Hospital from January 2019 to August 2020. Patients were divided into two groups according to the mRS (modified Rankin Scale) score at discharge. Clinical and laboratory characteristics were compared. Logistic regression analyses were performed to identify the potential risk factors for short-term neurological outcome. Results A total of 175 bAVM patients were enrolled in the study, including 139 patients with favorable outcome (mRS ≤ 2) and 36 patients with unfavorable outcome (mRS > 2). Hyperhomocysteinemia was identified in 32.6% of cases (n = 57). Serum Hcy level was related to seizure manifestation (P = 0.034) and short-term neurological outcome (P = 0.027). Logistic regression analysis showed that serum glucose (OR 1.897, 95% CI 1.115-3.229; P = 0.018) and Hcy level (OR 0.838, 95% CI 0.720-0.976; P = 0.023) were significantly associated with short-term disability. Conclusion Our results indicated that the lower serum Hcy level is strongly associated with in-hospital unfavorable outcome. Further prospective studies of Hcy natural history and managements in bAVMs are required, which would be valuable for evaluating the disease-modifying efficacy of oral nutritional supplements in bAVM patients.
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Xiong Y, Xin DQ, Hu Q, Wang LX, Qiu J, Yuan HT, Chu XL, Liu DX, Li G, Wang Z. Neuroprotective mechanism of L-cysteine after subarachnoid hemorrhage. Neural Regen Res 2020; 15:1920-1930. [PMID: 32246641 PMCID: PMC7513988 DOI: 10.4103/1673-5374.280321] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hydrogen sulfide, which can be generated in the central nervous system from the sulfhydryl-containing amino acid, L-cysteine, by cystathionine-β-synthase, may exert protective effects in experimental subarachnoid hemorrhage; however, the mechanism underlying this effect is unknown. This study explored the mechanism using a subarachnoid hemorrhage rat model induced by an endovascular perforation technique. Rats were treated with an intraperitoneal injection of 100 mM L-cysteine (30 μL) 30 minutes after subarachnoid hemorrhage. At 48 hours after subarachnoid hemorrhage, hematoxylin-eosin staining was used to detect changes in prefrontal cortex cells. L-cysteine significantly reduced cell edema. Neurological function was assessed using a modified Garcia score. Brain water content was measured by the wet-dry method. L-cysteine significantly reduced neurological deficits and cerebral edema after subarachnoid hemorrhage. Immunofluorescence was used to detect the number of activated microglia. Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect the levels of interleukin 1β and CD86 mRNA in the prefrontal cortex. L-cysteine inhibited microglial activation in the prefrontal cortex and reduced the mRNA levels of interleukin 1β and CD86. RT-PCR and western blot analysis of the complement system showed that L-cysteine reduced expression of the complement factors, C1q, C3α and its receptor C3aR1, and the deposition of C1q in the prefrontal cortex. Dihydroethidium staining was applied to detect changes in reactive oxygen species, and immunohistochemistry was used to detect the number of NRF2- and HO-1-positive cells. L-cysteine reduced the level of reactive oxygen species in the prefrontal cortex and the number of NRF2- and HO-1-positive cells. Western blot assays and immunohistochemistry were used to detect the protein levels of CHOP and GRP78 in the prefrontal cortex and the number of CHOP- and GRP78-positive cells. L-cysteine reduced CHOP and GRP78 levels and the number of CHOP- and GRP78-positive cells. The cystathionine-β-synthase inhibitor, aminooxyacetic acid, significantly reversed the above neuroprotective effects of L-cysteine. Taken together, L-cysteine can play a neuroprotective role by regulating neuroinflammation, complement deposition, oxidative stress and endoplasmic reticulum stress. The study was approved by the Animals Ethics Committee of Shandong University, China on February 22, 2016 (approval No. LL-201602022).
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Affiliation(s)
- Ye Xiong
- Department of Physiology, School of Basic Medical Sciences; Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong Province, China
| | - Dan-Qing Xin
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong Province, China
| | - Quan Hu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan; Department of Neurosurgery, Taian Central Hospital, Taian, Shandong Province, China
| | - Ling-Xiao Wang
- Department of Physiology, School of Basic Medical Sciences; Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong Province, China
| | - Jie Qiu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong Province, China
| | - Hong-Tao Yuan
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong Province, China
| | - Xi-Li Chu
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong Province, China
| | - De-Xiang Liu
- Department of Medical Psychology and Ethics, School of Basic Medicine Sciences, Shandong University, Jinan, Shandong Province, China
| | - Gang Li
- Department of Neurosurgery, Qilu Hospital of Shandong University and Brain Science Research Institute, Shandong University, Jinan, Shandong Province, China
| | - Zhen Wang
- Department of Physiology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong Province, China
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11
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Rajendran S, Shen X, Glawe J, Kolluru GK, Kevil CG. Nitric Oxide and Hydrogen Sulfide Regulation of Ischemic Vascular Growth and Remodeling. Compr Physiol 2019; 9:1213-1247. [PMID: 31187898 DOI: 10.1002/cphy.c180026] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ischemic vascular remodeling occurs in response to stenosis or arterial occlusion leading to a change in blood flow and tissue perfusion. Altered blood flow elicits a cascade of molecular and cellular physiological responses leading to vascular remodeling of the macro- and micro-circulation. Although cellular mechanisms of vascular remodeling such as arteriogenesis and angiogenesis have been studied, therapeutic approaches in these areas have had limited success due to the complexity and heterogeneous constellation of molecular signaling events regulating these processes. Understanding central molecular players of vascular remodeling should lead to a deeper understanding of this response and aid in the development of novel therapeutic strategies. Hydrogen sulfide (H2 S) and nitric oxide (NO) are gaseous signaling molecules that are critically involved in regulating fundamental biochemical and molecular responses necessary for vascular growth and remodeling. This review examines how NO and H2 S regulate pathophysiological mechanisms of angiogenesis and arteriogenesis, along with important chemical and experimental considerations revealed thus far. The importance of NO and H2 S bioavailability, their synthesis enzymes and cofactors, and genetic variations associated with cardiovascular risk factors suggest that they serve as pivotal regulators of vascular remodeling responses. © 2019 American Physiological Society. Compr Physiol 9:1213-1247, 2019.
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Affiliation(s)
| | - Xinggui Shen
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - John Glawe
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - Gopi K Kolluru
- Departments of Pathology, LSU Health Sciences Center, Shreveport
| | - Christopher G Kevil
- Departments of Pathology, LSU Health Sciences Center, Shreveport.,Departments of Cellular Biology and Anatomy, LSU Health Sciences Center, Shreveport.,Departments of Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport
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12
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George AK, Homme RP, Majumder A, Laha A, Metreveli N, Sandhu HS, Tyagi SC, Singh M. Hydrogen sulfide intervention in cystathionine-β-synthase mutant mouse helps restore ocular homeostasis. Int J Ophthalmol 2019; 12:754-764. [PMID: 31131233 DOI: 10.18240/ijo.2019.05.09] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 02/24/2019] [Indexed: 02/03/2023] Open
Abstract
AIM To investigate the applications of hydrogen sulfide (H2S) in eye-specific ailments in mice. METHODS Heterozygous cystathionine-β-synthase (CBS+/-) and wild-type C57BL/6J (WT) mice fed with or without high methionine diet (HMD) were administered either phosphate buffered saline (PBS) or the slow-release H2S donor: GYY4137. Several analyses were performed to study GYY4137 effects by examining retinal lysates for key protein expressions along with plasma glutamate and glutathione estimations. Intraocular pressure (IOP) was monitored during GYY4137 treatment; barium sulfate and bovine serum albumin conjugated fluorescein isothiocyanate (BSA-FITC) angiographies were performed for examining vasculature and its permeability post-treatment. Vision-guided behavior was also tested employing novel object recognition test (NORT) and light-dark box test (LDBT) recordings. RESULTS CBS deficiency (CBS+/-) coupled with HMD led disruption of methionine/homocysteine (Hcy) metabolism leading to hyperhomocysteinemia (HHcy) in CBS+/- mice as reflected by increased Hcy, and s-adenosylhomocysteine hydrolase (SAHH) levels. Unlike CBS, cystathionine-γ lyase (CSE), methylenetetrahydrofolate reductase (MTHFR) levels which were reduced but compensated by GYY4137 intervention. Heightened oxidative and endoplasmic reticulum (ER) stress responses were mitigated by GYY4137 effects along with enhanced glutathione (GSH) levels. Increased glutamate levels in CBS+/- strain were prominent than WT mice and these mice also exhibited higher IOP that was lowered by GYY4137 treatment. CBS deficiency also resulted in vision-guided behavioral impairment as revealed by NORT and LDBT findings. Interestingly, GYY4137 was able to improve CBS+/- mice behavior together with lowering their glutamate levels. Blood-retinal barrier (BRB) appeared compromised in CBS+/- with vessels' leakage that was mitigated in GYY4137 treated group. This corroborated the results for occludin (an integral plasma membrane protein of the cellular tight junctions) stabilization. CONCLUSION Findings reveal that HHcy-induced glutamate excitotoxicity, oxidative damage, ER-stress and vascular permeability alone or together can compromise ocular health and that GYY4137 could serve as a potential therapeutic agent for treating HHcy induced ocular disorders.
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Affiliation(s)
- Akash K George
- Eye and Vision Science Laboratory, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.,Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Rubens P Homme
- Eye and Vision Science Laboratory, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.,Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Avisek Majumder
- Department of Medicine, UCSF Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA 94158, USA
| | - Anwesha Laha
- Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Naira Metreveli
- Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Harpal S Sandhu
- Department of Ophthalmology and Visual Sciences; Kentucky Lions Eye Center, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Suresh C Tyagi
- Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
| | - Mahavir Singh
- Eye and Vision Science Laboratory, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.,Department of Physiology, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA
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13
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McBride DW, Blackburn SL, Peeyush KT, Matsumura K, Zhang JH. The Role of Thromboinflammation in Delayed Cerebral Ischemia after Subarachnoid Hemorrhage. Front Neurol 2017; 8:555. [PMID: 29109695 PMCID: PMC5660311 DOI: 10.3389/fneur.2017.00555] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 10/02/2017] [Indexed: 01/13/2023] Open
Abstract
Delayed cerebral ischemia (DCI) is a major determinant of patient outcome following aneurysmal subarachnoid hemorrhage. Although the exact mechanisms leading to DCI are not fully known, inflammation, cerebral vasospasm, and microthrombi may all function together to mediate the onset of DCI. Indeed, inflammation is tightly linked with activation of coagulation and microthrombi formation. Thromboinflammation is the intersection at which inflammation and thrombosis regulate one another in a feedforward manner, potentiating the formation of thrombi and pro-inflammatory signaling. In this review, we will explore the role(s) of inflammation and microthrombi in subarachnoid hemorrhage (SAH) pathophysiology and DCI, and discuss the potential of targeting thromboinflammation to prevent DCI after SAH.
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Affiliation(s)
- Devin W McBride
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Spiros L Blackburn
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Kumar T Peeyush
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Kanako Matsumura
- The Vivian L. Smith Department of Neurosurgery, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda School of Medicine, Loma Linda University, Loma Linda, CA, United States.,Department of Neurosurgery, Loma Linda School of Medicine, Loma Linda University, Loma Linda, CA, United States
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