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Wang J, Wu T, Zhao Y, Mao L, Ding J, Wang X. IL-17A Aggravated Blood-Brain Barrier Disruption via Activating Src Signaling in Epilepsy Mice. Mol Neurobiol 2024:10.1007/s12035-024-04203-7. [PMID: 38819634 DOI: 10.1007/s12035-024-04203-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/25/2024] [Indexed: 06/01/2024]
Abstract
Inflammation is an important pathogenic driving force in the genesis and development of epilepsy. The latest researches demonstrated that IL-17A mediated blood-brain barrier (BBB) dysfunction through disruption of tight junction protein expression. To investigate whether IL-17A is involved in BBB disruption after acute seizure attack, the pilocarpine model was established with C57BL/6 J (wild type, WT) and IL-17R-deficient mice in vivo and with primary cultured rat brain microvascular endothelial cells in vitro. The mortality rate and brain water content were evaluated at 24 h after status epilepticus, and IL-17A concentration, endothelial tight junction, adherens junction proteins, and albumin leakage were assessed at 0 h, 4 h, 12 h, and 24 h after status epilepticus (SE). IL-17R-deficient mice showed lessen severity of epilepsy than WT mice, accompanied by less albumin leakage, reduced brain water content, decreased IL-17A, and upregulated expression of target proteins (ZO-1, Occludin and VE-cadherin). IL-17R knockout abrogated abnormal upregulation of Src kinase and phosphorylated Src kinase in the setting of SE, and Src kinase inhibitor PP1 abrogated IL-17A-induced SE related endothelial injury in vitro. In conclusion, IL-17A inhibition might be a promising therapeutic option to attenuate endothelial cell injury and further BBB disruption by reducing Src kinase activation.
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Affiliation(s)
- Jing Wang
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Tingting Wu
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Yanan Zhao
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
- Department of Neurology, Qingpu Branch of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lingyan Mao
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Jing Ding
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China.
- CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai, China.
| | - Xin Wang
- Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
- CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai, China
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Bücke P, Jung S, Kaesmacher J, Goeldlin MB, Horvath T, Prange U, Beyeler M, Fischer U, Arnold M, Seiffge DJ, Meinel TR. Intravenous thrombolysis in patients with recent intake of direct oral anticoagulants: A target trial analysis after the liberalization of institutional guidelines. Eur Stroke J 2024:23969873241252751. [PMID: 38738861 DOI: 10.1177/23969873241252751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Abstract
INTRODUCTION This study aimed to report the safety and efficacy of off-label intravenous thrombolysis (IVT) with alteplase after sequentially liberalizing our institutional guidelines allowing IVT for patients under direct oral anticoagulants (DOACs) regardless of plasma levels, time of last intake, and without prior anticoagulation reversal therapy. PATIENTS AND METHODS We utilized the target-trial methodology to emulate hypothetical criteria of a randomized controlled trial in our prospective stroke registry. Consecutive DOAC patients (06/2021-11/2023) otherwise qualifying for IVT were included. Safety and efficacy outcomes (symptomatic intracranial hemorrhage [ICH], any radiological ICH, major bleeding, 90-day mortality, 90-day good functional outcome [mRS 0-2 or return to baseline]) were assessed using inverse-probability-weighted regression-adjustment comparing patients with versus without IVT. RESULTS Ninety eight patients fulfilled the target-trial criteria. IVT was given in 49/98 (50%) patients at a median of 178 (interquartile range 134-285) min after symptom onset with median DOAC plasma level of 77 ng/ml (15 patients had plasma levels > 100 ng/ml; 25/49 [51%] were treated within 12 h after last DOAC ingestion). Endovascular therapy was more frequent in patients without IVT (73% vs 33%). Symptomatic ICH occurred in 0/49 patients receiving IVT and 2/49 patients without IVT (adjusted difference -2.5%; 95% CI -5.9 to 0.8). The rates of any radiological ICH were comparable. Patients receiving IVT were more likely to have good functional outcomes. DISCUSSION AND CONCLUSION After liberalizing our approach for IVT regardless of recent DOAC intake, we did not experience any safety concerns. The association of IVT with better functional outcomes warrants prospective randomized controlled trials.
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Affiliation(s)
- Philipp Bücke
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Simon Jung
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Johannes Kaesmacher
- Institute of Diagnostic and Interventional Neuroradiology, Stroke Research Center Bern, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Martina B Goeldlin
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Thomas Horvath
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Ulrike Prange
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Morin Beyeler
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
- Clinical and Translational Neuroscience Unit, Feil Family Brain and Mind Research Institute and Department of Neurology, Weill Cornell Medicine, New York, NY, USA
| | - Urs Fischer
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
- Stroke Center and Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - Marcel Arnold
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - David J Seiffge
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
| | - Thomas R Meinel
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Switzerland
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Tao C, Li Y, An N, Liu H, Liu Z, Sun Y, Qian Y, Li N, Xing Y, Gao Y. Pathological mechanisms and future therapeutic directions of thrombin in intracerebral hemorrhage: a systematic review. Front Pharmacol 2024; 15:1293428. [PMID: 38698822 PMCID: PMC11063263 DOI: 10.3389/fphar.2024.1293428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 03/05/2024] [Indexed: 05/05/2024] Open
Abstract
Intracerebral hemorrhage (ICH), a common subtype of hemorrhagic stroke, often causes severe disability or death. ICH induces adverse events that might lead to secondary brain injury (SBI), and there is currently a lack of specific effective treatment strategies. To provide a new direction for SBI treatment post-ICH, the systematic review discussed how thrombin impacts secondary injury after ICH through several potentially deleterious or protective mechanisms. We included 39 studies and evaluated them using SYRCLE's ROB tool. Subsequently, we explored the potential molecular mechanisms of thrombin-mediated effects on SBI post-ICH in terms of inflammation, iron deposition, autophagy, and angiogenesis. Furthermore, we described the effects of thrombin in endothelial cells, astrocytes, pericytes, microglia, and neurons, as well as the harmful and beneficial effects of high and low thrombin concentrations on ICH. Finally, we concluded the current research status of thrombin therapy for ICH, which will provide a basis for the future clinical application of thrombin in the treatment of ICH.
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Affiliation(s)
- Chenxi Tao
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
| | - Yuanyuan Li
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
| | - Na An
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Haoqi Liu
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Zhenhong Liu
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
| | - Yikun Sun
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Ying Qian
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Na Li
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yanwei Xing
- Guang’an Men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yonghong Gao
- Key Laboratory of Chinese Internal Medicine of Ministry of Education, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
- Institute for Brain Disorders, Beijing University of Chinese Medicine, Beijing, China
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Fong H, Zhou B, Feng H, Luo C, Bai B, Zhang J, Wang Y. Recapitulation of Structure-Function-Regulation of Blood-Brain Barrier under (Patho)Physiological Conditions. Cells 2024; 13:260. [PMID: 38334652 PMCID: PMC10854731 DOI: 10.3390/cells13030260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/12/2024] [Accepted: 01/19/2024] [Indexed: 02/10/2024] Open
Abstract
The blood-brain barrier (BBB) is a remarkable and intricate barrier that controls the exchange of molecules between the bloodstream and the brain. Its role in maintaining the stability of the central nervous system cannot be overstated. Over the years, advancements in neuroscience and technology have enabled us to delve into the cellular and molecular components of the BBB, as well as its regulation. Yet, there is a scarcity of comprehensive reviews that follow a logical framework of structure-function-regulation, particularly focusing on the nuances of BBB regulation under both normal and pathological conditions. This review sets out to address this gap by taking a historical perspective on the discovery of the BBB and highlighting the major observations that led to its recognition as a distinct brain barrier. It explores the intricate cellular elements contributing to the formation of the BBB, including endothelial cells, pericytes, astrocytes, and neurons, emphasizing their collective role in upholding the integrity and functionality of the BBB. Furthermore, the review delves into the dynamic regulation of the BBB in physiological states, encompassing neural, humoral, and auto-regulatory mechanisms. By shedding light on these regulatory processes, a deeper understanding of the BBB's response to various physiological cues emerges. This review also investigates the disruption of the BBB integrity under diverse pathological conditions, such as ischemia, infection, and toxin exposure. It elucidates the underlying mechanisms that contribute to BBB dysfunction and explores potential therapeutic strategies that aim to restore the BBB integrity and function. Overall, this recapitulation provides valuable insights into the structure, functions, and regulation of the BBB. By integrating historical perspectives, cellular elements, regulatory mechanisms, and pathological implications, this review contributes to a more comprehensive understanding of the BBB and paves the way for future research and therapeutic interventions.
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Affiliation(s)
- Hin Fong
- Faculty of Medicine, International School, Jinan University, Guangzhou 510632, China; (H.F.); (C.L.); (B.B.)
| | - Botao Zhou
- Department of Physiology, Basic Medical and Public Health School, Jinan University, Guangzhou 510632, China;
| | - Haixiao Feng
- Gies College of Business, University of Illinois Urbana-Champaign, Urbana-Champaign, IL 61801, USA;
| | - Chuoying Luo
- Faculty of Medicine, International School, Jinan University, Guangzhou 510632, China; (H.F.); (C.L.); (B.B.)
| | - Boren Bai
- Faculty of Medicine, International School, Jinan University, Guangzhou 510632, China; (H.F.); (C.L.); (B.B.)
| | - John Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA 92350, USA;
- Department of Neurosurgery, Loma Linda University, Loma Linda, CA 92350, USA
| | - Yuechun Wang
- Department of Physiology, Basic Medical and Public Health School, Jinan University, Guangzhou 510632, China;
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Liang H, Zhang X, Hou Y, Zheng K, Hao H, He B, Li H, Sun C, Yang T, Song H, Cai R, Wang Y, Jiang H, Qi L, Wang Y. Super-high procoagulant activity of gecko thrombin: A gift from sky dragon. CNS Neurosci Ther 2023; 29:3081-3093. [PMID: 37144588 PMCID: PMC10493662 DOI: 10.1111/cns.14250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 04/06/2023] [Accepted: 04/17/2023] [Indexed: 05/06/2023] Open
Abstract
AIMS Gecko, the "sky dragon" named by Traditional Chinese Medicine, undergoes rapid coagulation and scarless regeneration following tail amputation in the natural ecology, providing a perfect opportunity to develop the efficient and safe drug for blood clotting. Here, gecko thrombin (gthrombin) was recombinantly prepared and comparatively studied on its procoagulant activity. METHODS The 3D structure of gthrombin was constructed using the homology modeling method of I-TASSER. The active gthrombin was prepared by the expression of gecko prethrombin-2 in 293 T cells, followed by purification with Ni2+ -chelating column chromatography prior to activation by snake venom-derived Ecarin. The enzymatic activities of gthrombin were assayed by hydrolysis of synthetic substrate S-2238 and the fibrinogen clotting. The vulnerable nerve cells were used to evaluate the toxicity of gthrombin at molecular and cellular levels. RESULTS The active recombinant gthrombin showed super-high catalytic and fibrinogenolytic efficiency than those of human under different temperatures and pH conditions. In addition, gthrombin made nontoxic effects on the central nerve cells including neurons, contrary to those of mammalian counterparts, which contribute to neuronal damage, astrogliosis, and demyelination. CONCLUSIONS A super-high activity but safe procoagulant candidate drug was identified from reptiles, which provided a promising perspective for clinical application in rapid blood clotting.
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Affiliation(s)
- Hao Liang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Xingyuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Yuxuan Hou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Kang Zheng
- Anti‐aging & Regenerative Medicine Research Institution, School of Life Sciences and MedicineShandong University of TechnologyZiboPR China
| | - Huifei Hao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Bingqiang He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Hui Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Chunshuai Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Ting Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Honghua Song
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Rixin Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Haiyan Jiang
- Department of Emergency MedicineAffiliated Hospital of Nantong UniversityNantongPR China
| | - Lei Qi
- Department of Emergency MedicineAffiliated Hospital of Nantong UniversityNantongPR China
| | - Yongjun Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
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Yang D, Wang X, Zhang X, Zhu H, Sun S, Mane R, Zhao X, Zhou J. Temporal Evolution of Perihematomal Blood-Brain Barrier Compromise and Edema Growth After Intracerebral Hemorrhage. Clin Neuroradiol 2023; 33:813-824. [PMID: 37185668 PMCID: PMC10449681 DOI: 10.1007/s00062-023-01285-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 02/23/2023] [Indexed: 05/17/2023]
Abstract
PURPOSE The aim of this study was to investigate the temporal evolution of perihematomal blood-brain barrier (BBB) compromise and edema growth and to determine the role of BBB compromise in edema growth. METHODS Spontaneous intracerebral hemorrhage patients who underwent computed tomography perfusion (CTP) were divided into five groups according to the time interval from symptom onset to CTP examination. Permeability-surface area product (PS) maps were generated using CTP source images. Ipsilateral and contralateral mean PS values were computed in the perihematomal and contralateral mirror regions. The relative PS (rPS) value was calculated as a ratio of ipsilateral to contralateral PS value. Hematoma and perihematomal edema volume were determined on non-contrast CT images. RESULTS In the total of 101 intracerebral hemorrhage patients, the ipsilateral mean PS value was significantly higher than that in contralateral region (z = -8.284, p < 0.001). The perihematomal BBB permeability showed a course of dynamic changes including an increase in the hyperacute and acute phases, a decrease in the early subacute phase and a second increase in the late subacute phase and chronic phase. Perihematomal edema increased gradually until the late subacute phase and then slightly increased. There was a relationship between rPS value and edema volume (β = 0.254, p = 0.006). CONCLUSION The perihematomal BBB permeability is dynamic changes, and edema growth is gradually increased in patients following intracerebral hemorrhage. BBB compromise plays an essential role in edema growth. The quantitative assessment of BBB compromise may provide valuable information in therapeutic interventions of intracerebral hemorrhage patients.
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Affiliation(s)
- Dan Yang
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, 100070 Beijing, China
| | - Xin Wang
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xue Zhang
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, 100070 Beijing, China
| | - Huachen Zhu
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, 100070 Beijing, China
| | - Shengjun Sun
- Department of Neuroradiology, Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Ravikiran Mane
- China National Clinical Research Center-Hanalytics Artificial Intelligence Research Centre for Neurological Disorders, Beijing, China
| | - Xingquan Zhao
- Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jian Zhou
- Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, No.119, South Fourth Ring West Road, Fengtai District, 100070 Beijing, China
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Shabani Z, Liu J, Su H. Vascular Dysfunctions Contribute to the Long-Term Cognitive Deficits Following COVID-19. BIOLOGY 2023; 12:1106. [PMID: 37626992 PMCID: PMC10451811 DOI: 10.3390/biology12081106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a single-stranded RNA virus and a member of the corona virus family, primarily affecting the upper respiratory system and the lungs. Like many other respiratory viruses, SARS-CoV-2 can spread to other organ systems. Apart from causing diarrhea, another very common but debilitating complication caused by SARS-CoV-2 is neurological symptoms and cognitive difficulties, which occur in up to two thirds of hospitalized COVID-19 patients and range from shortness of concentration and overall declined cognitive speed to executive or memory function impairment. Neuro-cognitive dysfunction and "brain fog" are frequently present in COVID-19 cases, which can last several months after the infection, leading to disruption of daily life. Cumulative evidence suggests that SARS-CoV-2 affects vasculature in the extra-pulmonary systems directly or indirectly, leading to impairment of endothelial function and even multi-organ damage. The post COVID-19 long-lasting neurocognitive impairments have not been studied fully and their underlying mechanism remains elusive. In this review, we summarize the current understanding of the effects of COVID-19 on vascular dysfunction and how vascular dysfunction leads to cognitive impairment in patients.
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Affiliation(s)
- Zahra Shabani
- Center for Cerebrovascular Research, University of California (San Francisco), San Francisco, CA 94131, USA;
- Department of Anesthesia and Perioperative Care, University of California (San Francisco), San Francisco, CA 94131, USA
| | - Jialing Liu
- Department of Neurosurgery, University of California (San Francisco), San Francisco, CA 94131, USA;
| | - Hua Su
- Center for Cerebrovascular Research, University of California (San Francisco), San Francisco, CA 94131, USA;
- Department of Anesthesia and Perioperative Care, University of California (San Francisco), San Francisco, CA 94131, USA
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Liu Y, Chen S, Liu S, Wallace KL, Zille M, Zhang J, Wang J, Jiang C. T-cell receptor signaling modulated by the co-receptors: Potential targets for stroke treatment. Pharmacol Res 2023; 192:106797. [PMID: 37211238 DOI: 10.1016/j.phrs.2023.106797] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 05/23/2023]
Abstract
Stroke is a severe and life-threatening disease, necessitating more research on new treatment strategies. Infiltrated T lymphocytes, an essential adaptive immune cell with extensive effector function, are crucially involved in post-stroke inflammation. Immediately after the initiation of the innate immune response triggered by microglia/macrophages, the adaptive immune response associated with T lymphocytes also participates in the complex pathophysiology of stroke and partially informs the outcome of stroke. Preclinical and clinical studies have revealed the conflicting roles of T cells in post-stroke inflammation and as potential therapeutic targets. Therefore, exploring the mechanisms that underlie the adaptive immune response associated with T lymphocytes in stroke is essential. The T-cell receptor (TCR) and its downstream signaling regulate T lymphocyte differentiation and activation. This review comprehensively summarizes the various molecules that regulate TCR signaling and the T-cell response. It covers both the co-stimulatory and co-inhibitory molecules and their roles in stroke. Because immunoregulatory therapies targeting TCR and its mediators have achieved great success in some proliferative diseases, this article also summarizes the advances in therapeutic strategies related to TCR signaling in lymphocytes after stroke, which can facilitate translation. DATA AVAILABILITY: No data was used for the research described in the article.
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Affiliation(s)
- Yuanyuan Liu
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China
| | - Shuai Chen
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China
| | - Simon Liu
- Medical Genomics Unit, National Human Genome Research Institute, Bethesda, MD, 20814, USA
| | - Kevin L Wallace
- College of Mathematical and Natural Sciences, University of Maryland, College Park, MD, 20742, USA
| | - Marietta Zille
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, A-1090 Vienna, Austria
| | - Jiewen Zhang
- Department of Neurology, People's Hospital of Zhengzhou University, 450000, Zhengzhou, P. R. China.
| | - Jian Wang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China; Department of Anatomy, School of Basic Medical Sciences, Zhengzhou University, 450001, Zhengzhou, P. R. China.
| | - Chao Jiang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China.
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Iannucci J, Grammas P. Thrombin, a Key Driver of Pathological Inflammation in the Brain. Cells 2023; 12:cells12091222. [PMID: 37174621 PMCID: PMC10177239 DOI: 10.3390/cells12091222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/21/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
Neurodegenerative diseases, including Alzheimer's disease (AD), are major contributors to death and disability worldwide. A multitude of evidence suggests that neuroinflammation is critical in neurodegenerative disease processes. Exploring the key mediators of neuroinflammation in AD, a prototypical neurodegenerative disease, could help identify pathologic inflammatory mediators and mechanisms in other neurodegenerative diseases. Elevated levels of the multifunctional inflammatory protein thrombin are commonly found in conditions that increase AD risk, including diabetes, atherosclerosis, and traumatic brain injury. Thrombin, a main driver of the coagulation cascade, has been identified as important to pathological events in AD and other neurodegenerative diseases. Furthermore, recent evidence suggests that coagulation cascade-associated proteins act as drivers of inflammation in the AD brain, and studies in both human populations and animal models support the view that abnormalities in thrombin generation promote AD pathology. Thrombin drives neuroinflammation through its pro-inflammatory activation of microglia, astrocytes, and endothelial cells. Due to the wide-ranging pro-inflammatory effects of thrombin in the brain, inhibiting thrombin could be an effective strategy for interrupting the inflammatory cascade which contributes to neurodegenerative disease progression and, as such, may be a potential therapeutic target for AD and other neurodegenerative diseases.
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Affiliation(s)
- Jaclyn Iannucci
- Department of Neuroscience and Experimental Therapeutics, School of Medicine, Texas A&M University, Bryan, TX 77807, USA
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Meinel TR, Wilson D, Gensicke H, Scheitz JF, Ringleb P, Goganau I, Kaesmacher J, Bae HJ, Kim DY, Kermer P, Suzuki K, Kimura K, Macha K, Koga M, Wada S, Altersberger V, Salerno A, Palanikumar L, Zini A, Forlivesi S, Kellert L, Wischmann J, Kristoffersen ES, Beharry J, Barber PA, Hong JB, Cereda C, Schlemm E, Yakushiji Y, Poli S, Leker R, Romoli M, Zedde M, Curtze S, Ikenberg B, Uphaus T, Giannandrea D, Portela PC, Veltkamp R, Ranta A, Arnold M, Fischer U, Cha JK, Wu TY, Purrucker JC, Seiffge DJ. Intravenous Thrombolysis in Patients With Ischemic Stroke and Recent Ingestion of Direct Oral Anticoagulants. JAMA Neurol 2023; 80:233-243. [PMID: 36807495 PMCID: PMC9857462 DOI: 10.1001/jamaneurol.2022.4782] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/21/2022] [Indexed: 02/07/2023]
Abstract
Importance International guidelines recommend avoiding intravenous thrombolysis (IVT) in patients with ischemic stroke who have a recent intake of a direct oral anticoagulant (DOAC). Objective To determine the risk of symptomatic intracranial hemorrhage (sICH) associated with use of IVT in patients with recent DOAC ingestion. Design, Setting, and Participants This international, multicenter, retrospective cohort study included 64 primary and comprehensive stroke centers across Europe, Asia, Australia, and New Zealand. Consecutive adult patients with ischemic stroke who received IVT (both with and without thrombectomy) were included. Patients whose last known DOAC ingestion was more than 48 hours before stroke onset were excluded. A total of 832 patients with recent DOAC use were compared with 32 375 controls without recent DOAC use. Data were collected from January 2008 to December 2021. Exposures Prior DOAC therapy (confirmed last ingestion within 48 hours prior to IVT) compared with no prior oral anticoagulation. Main Outcomes and Measures The main outcome was sICH within 36 hours after IVT, defined as worsening of at least 4 points on the National Institutes of Health Stroke Scale and attributed to radiologically evident intracranial hemorrhage. Outcomes were compared according to different selection strategies (DOAC-level measurements, DOAC reversal treatment, IVT with neither DOAC-level measurement nor idarucizumab). The association of sICH with DOAC plasma levels and very recent ingestions was explored in sensitivity analyses. Results Of 33 207 included patients, 14 458 (43.5%) were female, and the median (IQR) age was 73 (62-80) years. The median (IQR) National Institutes of Health Stroke Scale score was 9 (5-16). Of the 832 patients taking DOAC, 252 (30.3%) received DOAC reversal before IVT (all idarucizumab), 225 (27.0%) had DOAC-level measurements, and 355 (42.7%) received IVT without measuring DOAC plasma levels or reversal treatment. The unadjusted rate of sICH was 2.5% (95% CI, 1.6-3.8) in patients taking DOACs compared with 4.1% (95% CI, 3.9-4.4) in control patients using no anticoagulants. Recent DOAC ingestion was associated with lower odds of sICH after IVT compared with no anticoagulation (adjusted odds ratio, 0.57; 95% CI, 0.36-0.92). This finding was consistent among the different selection strategies and in sensitivity analyses of patients with detectable plasma levels or very recent ingestion. Conclusions and Relevance In this study, there was insufficient evidence of excess harm associated with off-label IVT in selected patients after ischemic stroke with recent DOAC ingestion.
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Affiliation(s)
- Thomas R. Meinel
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Duncan Wilson
- Department of Neurology, Christchurch Hospital, Christchurch, New Zealand
- New Zealand Brain Research Institute, Christchurch, New Zealand
| | - Henrik Gensicke
- Stroke Center, Department of Neurology, University Hospital Basel, Basel, Switzerland
- Neurology and Neurorehabilitation, University Department of Geriatric Medicine Felix Platter, University of Basel, Basel, Switzerland
| | - Jan F. Scheitz
- Department of Neurology, Berlin Institute of Health, Charité–Universitätsmedizin Berlin, Berlin, Germany
- German Center for Cardiovascular Research Partner Site Berlin, Germany
- Center for Stroke Research Berlin, Charité–Universitätsmedizin Berlin, Berlin, Germany
| | - Peter Ringleb
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
| | - Ioana Goganau
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
| | - Johannes Kaesmacher
- Institute of Diagnostic and Interventional Neuroradiology, Stroke Research Center Bern, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Hee-Joon Bae
- Department of Neurology, Cerebrovascular Disease Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam-si, South Korea
| | - Do Yeon Kim
- Department of Neurology, Cerebrovascular Disease Center, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam-si, South Korea
| | - Pawel Kermer
- Department of Neurology, Friesland Kliniken, Sande, Germany
- Department of Neurology, University Medicine Göttingen, Göttingen, Germany
| | - Kentaro Suzuki
- Department of Neurology, Nippon Medical School, Tokyo, Japan
| | - Kazumi Kimura
- Department of Neurology, Nippon Medical School, Tokyo, Japan
| | - Kosmas Macha
- Department of Neurology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Masatoshi Koga
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Shinichi Wada
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Valerian Altersberger
- Stroke Center, Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - Alexander Salerno
- Stroke Center, Neurology Service, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | | | - Andrea Zini
- IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Department of Neurology and Stroke Center, Maggiore Hospital, Bologna, Italy
| | - Stefano Forlivesi
- IRCCS Istituto Delle Scienze Neurologiche Di Bologna, Department of Neurology and Stroke Center, Maggiore Hospital, Bologna, Italy
| | - Lars Kellert
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Johannes Wischmann
- Department of Neurology, University Hospital, LMU Munich, Munich, Germany
| | - Espen S. Kristoffersen
- Department of Neurology, Akershus University Hospital, Lørenskog, Norway
- Department of General Practice, Institute of Health and Society (HELSAM), University of Oslo, Oslo, Norway
| | - James Beharry
- Department of Medicine and Neurology, Melbourne Brain Centre at The Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
| | - P. Alan Barber
- Department of Medicine, Auckland University, Auckland, New Zealand
| | - Jae Beom Hong
- Department of Medicine, Auckland University, Auckland, New Zealand
| | - Carlo Cereda
- Stroke Center and Department of Neurology, Neurocenter of Southern Switzerland, Lugano, Switzerland
| | - Eckhard Schlemm
- Klinik und Poliklinik Für Neurologie, Kopf, und Neurozentrum, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Yusuke Yakushiji
- Department of Neurology Kansai Medical University, Hirakata, Japan
| | - Sven Poli
- Department of Neurology and Stroke, University of Tübingen, Tübingen, Germany
- Hertie-Institute for Clinical Brain Research, University of Tübingen, Tübingen, Germany
| | - Ronen Leker
- Department of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Michele Romoli
- Neurology and Stroke Unit, Department of Neuroscience, Bufalini Hospital, Cesena, Italy
| | - Marialuisa Zedde
- Neurology Unit, Stroke Unit, Azienda Unità Sanitaria Locale-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Sami Curtze
- Neurology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Benno Ikenberg
- Department of Neurology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Timo Uphaus
- Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Germany
| | - David Giannandrea
- Division of Neurology and Stroke Unit, Department of Neurology, Gubbio and Città di Castello Hospital, Perugia, Italy
| | - Pere Cardona Portela
- Department of Neurology, Stroke Unit, Hospital Universitari Bellvitge, Barcelona, Spain
| | - Roland Veltkamp
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
- Klinik für Neurologie, Alfried Krupp Krankenhaus, Essen, Germany
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Annemarei Ranta
- Department of Medicine, University of Otago, Wellington, New Zealand
- Department of Neurology, Capital and Coast District Health Board, Wellington, New Zealand
| | - Marcel Arnold
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Urs Fischer
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland
- Stroke Center, Department of Neurology, University Hospital Basel, Basel, Switzerland
| | - Jae-Kwan Cha
- Department of Neurology, Dong-A University Hospital, Busan, South Korea
| | - Teddy Y. Wu
- Department of Neurology, Christchurch Hospital, Christchurch, New Zealand
- New Zealand Brain Research Institute, Christchurch, New Zealand
| | - Jan C. Purrucker
- Department of Neurology, Heidelberg University Hospital, Heidelberg, Germany
| | - David J. Seiffge
- Stroke Research Center Bern, Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Switzerland
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11
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Wan Y, Holste KG, Hua Y, Keep RF, Xi G. Brain edema formation and therapy after intracerebral hemorrhage. Neurobiol Dis 2023; 176:105948. [PMID: 36481437 PMCID: PMC10013956 DOI: 10.1016/j.nbd.2022.105948] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/28/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022] Open
Abstract
Intracerebral hemorrhage (ICH) accounts for about 10% of all strokes in the United States of America causing a high degree of disability and mortality. There is initial (primary) brain injury due to the mechanical disruption caused by the hematoma. There is then secondary injury, triggered by the initial injury but also the release of various clot-derived factors (e.g., thrombin and hemoglobin). ICH alters brain fluid homeostasis. Apart from the initial hematoma mass, ICH causes blood-brain barrier disruption and parenchymal cell swelling, which result in brain edema and intracranial hypertension affecting patient prognosis. Reducing brain edema is a critical part of post-ICH care. However, there are limited effective treatment methods for reducing perihematomal cerebral edema and intracranial pressure in ICH. This review discusses the mechanisms underlying perihematomal brain edema formation, the effects of sex and age, as well as how edema is resolved. It examines progress in pharmacotherapy, particularly focusing on drugs which have been or are currently being investigated in clinical trials.
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Affiliation(s)
- Yingfeng Wan
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | | | - Ya Hua
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, Ann Arbor, MI, USA.
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12
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FDA-Approved Kinase Inhibitors in Preclinical and Clinical Trials for Neurological Disorders. Pharmaceuticals (Basel) 2022; 15:ph15121546. [PMID: 36558997 PMCID: PMC9784968 DOI: 10.3390/ph15121546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/14/2022] Open
Abstract
Cancers and neurological disorders are two major types of diseases. We previously developed a new concept termed "Aberrant Cell Cycle Diseases" (ACCD), revealing that these two diseases share a common mechanism of aberrant cell cycle re-entry. The aberrant cell cycle re-entry is manifested as kinase/oncogene activation and tumor suppressor inactivation, which are hallmarks of both tumor growth in cancers and neuronal death in neurological disorders. Therefore, some cancer therapies (e.g., kinase inhibition, tumor suppressor elevation) can be leveraged for neurological treatments. The United States Food and Drug Administration (US FDA) has so far approved 74 kinase inhibitors, with numerous other kinase inhibitors in clinical trials, mostly for the treatment of cancers. In contrast, there are dire unmet needs of FDA-approved drugs for neurological treatments, such as Alzheimer's disease (AD), intracerebral hemorrhage (ICH), ischemic stroke (IS), traumatic brain injury (TBI), and others. In this review, we list these 74 FDA-approved kinase-targeted drugs and identify those that have been reported in preclinical and/or clinical trials for neurological disorders, with a purpose of discussing the feasibility and applicability of leveraging these cancer drugs (FDA-approved kinase inhibitors) for neurological treatments.
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13
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Chen Y, Yang W, Chen F, Cui L. COVID-19 and cognitive impairment: neuroinvasive and blood‒brain barrier dysfunction. J Neuroinflammation 2022; 19:222. [PMID: 36071466 PMCID: PMC9450840 DOI: 10.1186/s12974-022-02579-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 08/24/2022] [Indexed: 11/10/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has led to a global pandemic. Although COVID-19 was initially described as a respiratory disease, there is growing evidence that SARS-CoV-2 is able to invade the brains of COVID-19 patients and cause cognitive impairment. It has been reported that SARS-CoV-2 may have invasive effects on a variety of cranial nerves, including the olfactory, trigeminal, optic, and vagus nerves, and may spread to other brain regions via infected nerve endings, retrograde transport, and transsynaptic transmission. In addition, the blood-brain barrier (BBB), composed of neurovascular units (NVUs) lining the brain microvasculature, acts as a physical barrier between nerve cells and circulating cells of the immune system and is able to regulate the transfer of substances between the blood and brain parenchyma. Therefore, the BBB may be an important structure for the direct and indirect interaction of SARS-CoV-2 with the brain via the blood circulation. In this review, we assessed the potential involvement of neuroinvasion under the SARS-CoV-2 infection, and the potential impact of BBB disorder under SARS-CoV-2 infection on cognitive impairment.
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Affiliation(s)
- Yanting Chen
- Department of Neurology, Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, China
| | - Wenren Yang
- Department of Trauma Center, Hengyang Medical School, Affiliated Nanhua Hospital, University of South China, Hengyang, 421002, China
| | - Feng Chen
- Department of Neurology, Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, China
| | - Lili Cui
- Department of Neurology, Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524000, China.
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14
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Fotooh Abadi L, Damiri F, Zehravi M, Joshi R, Pai R, Berrada M, Massoud EES, Rahman MH, Rojekar S, Cavalu S. Novel Nanotechnology-Based Approaches for Targeting HIV Reservoirs. Polymers (Basel) 2022; 14:polym14153090. [PMID: 35956604 PMCID: PMC9370744 DOI: 10.3390/polym14153090] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/23/2022] [Accepted: 07/26/2022] [Indexed: 12/04/2022] Open
Abstract
Highly active anti-retroviral therapy (HAART) is prescribed for HIV infection and, to a certain extent, limits the infection’s spread. However, it cannot completely eradicate the latent virus in remote and cellular reservoir areas, and due to the complex nature of the infection, the total eradication of HIV is difficult to achieve. Furthermore, monotherapy and multiple therapies are not of much help. Hence, there is a dire need for novel drug delivery strategies that may improve efficacy, decrease side effects, reduce dosing frequency, and improve patient adherence to therapy. Such a novel strategy could help to target the reservoir sites and eradicate HIV from different biological sanctuaries. In the current review, we have described HIV pathogenesis, the mechanism of HIV replication, and different biological reservoir sites to better understand the underlying mechanisms of HIV spread. Further, the review deliberates on the challenges faced by the current conventional drug delivery systems and introduces some novel drug delivery strategies that have been explored to overcome conventional drug delivery limitations. In addition, the review also summarizes several nanotechnology-based approaches that are being explored to resolve the challenges of HIV treatment by the virtue of delivering a variety of anti-HIV agents, either as combination therapies or by actively targeting HIV reservoir sites.
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Affiliation(s)
- Leila Fotooh Abadi
- Department of Virology, Indian Council of Medical Research, National AIDS Research Institute, Pune 411026, Maharashtra, India;
| | - Fouad Damiri
- Laboratory of Biomolecules and Organic Synthesis (BIOSYNTHO), Department of Chemistry, Faculty of Sciences Ben M’Sick, University Hassan II of Casablanca, Casablanca 20000, Morocco;
- Correspondence: (F.D.); (S.R.); (S.C.)
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy Girls Section, Prince Sattam Bin Abdul Aziz University, Alkharj 11942, Saudi Arabia;
| | - Rohit Joshi
- Precision NanoSystem Inc., Vancouver, BC V6P 6T7, Canada;
| | - Rohan Pai
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM’s NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400056, Maharashtra, India;
| | - Mohammed Berrada
- Laboratory of Biomolecules and Organic Synthesis (BIOSYNTHO), Department of Chemistry, Faculty of Sciences Ben M’Sick, University Hassan II of Casablanca, Casablanca 20000, Morocco;
| | - Ehab El Sayed Massoud
- Biology Department, Faculty of Science and Arts in Dahran Aljnoub, King Khalid University, Abha 62529, Saudi Arabia;
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha 61413, Saudi Arabia
- Agriculture Research Centre, Soil, Water and Environment Research Institute, Giza 3725004, Egypt
| | - Md. Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Gangwon-do, Wonju 26426, Korea;
| | - Satish Rojekar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Mumbai 400019, Maharashtra, India
- Departments of Medicine and Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Correspondence: (F.D.); (S.R.); (S.C.)
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, P-ta 1 Decembrie 10, 410087 Oradea, Romania
- Correspondence: (F.D.); (S.R.); (S.C.)
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15
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Chen S, Li L, Peng C, Bian C, Ocak PE, Zhang JH, Yang Y, Zhou D, Chen G, Luo Y. Targeting Oxidative Stress and Inflammatory Response for Blood-Brain Barrier Protection in Intracerebral Hemorrhage. Antioxid Redox Signal 2022; 37:115-134. [PMID: 35383484 DOI: 10.1089/ars.2021.0072] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance: Blood-brain barrier (BBB) disruption is a major pathological change after intracerebral hemorrhage (ICH) and is both the cause and result of oxidative stress and of the immune response post-ICH. These processes contribute to ICH-induced brain injury. Recent Advances: After the breakdown of cerebral vessels, blood components, including erythrocytes and their metabolites, thrombin, and fibrinogen, can access the cerebral parenchyma through the compromised BBB, triggering oxidative stress and inflammatory cascades. These aggravate BBB disruption and contribute to further infiltration of blood components, resulting in a vicious cycle that exacerbates brain edema and neurological injury after ICH. Experimental and clinical studies have highlighted the role of BBB disruption in ICH-induced brain injury. Critical Issues: In this review, we focus on the strategies to protect the BBB in ICH. Specifically, we summarize the evidence and the underlying mechanisms, including the ICH-induced process of oxidative stress and inflammatory response, and we highlight the potential therapeutic targets to protect BBB integrity after ICH. Future Directions: Future studies should probe the mechanism of ferroptosis as well as oxidative stress-inflammation coupling in BBB disruption after ICH and investigate the effects of antioxidants and immunomodulatory agents in more ICH clinical trials. Antioxid. Redox Signal. 37, 115-134.
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Affiliation(s)
- Shengpan Chen
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Institute of Neuroscience, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Lingzhi Li
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
| | - Chao Peng
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Institute of Neuroscience, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Chunjing Bian
- Department of General Surgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Pinar Eser Ocak
- Department of Neurosurgery, Uludag University School of Medicine, Bursa, Turkey
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, California, USA
- Department of Neurosurgery, Loma Linda University, Loma Linda, California, USA
| | - Yong Yang
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Institute of Neuroscience, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Dong Zhou
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Institute of Neuroscience, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Guangzhong Chen
- Department of Neurosurgery, Guangdong Provincial People's Hospital, Guangdong Institute of Neuroscience, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yumin Luo
- Institute of Cerebrovascular Disease Research and Department of Neurology, Xuanwu Hospital of Capital Medical University, Beijing, China
- Beijing Geriatric Medical Research Center and Beijing Key Laboratory of Translational Medicine for Cerebrovascular Diseases, Beijing, China
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16
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Alajangi HK, Kaur M, Sharma A, Rana S, Thakur S, Chatterjee M, Singla N, Jaiswal PK, Singh G, Barnwal RP. Blood-brain barrier: emerging trends on transport models and new-age strategies for therapeutics intervention against neurological disorders. Mol Brain 2022; 15:49. [PMID: 35650613 PMCID: PMC9158215 DOI: 10.1186/s13041-022-00937-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/24/2022] [Indexed: 12/12/2022] Open
Abstract
The integrity of the blood–brain barrier (BBB) is essential for normal central nervous system (CNS) functioning. Considering the significance of BBB in maintaining homeostasis and the neural environment, we aim to provide an overview of significant aspects of BBB. Worldwide, the treatment of neurological diseases caused by BBB disruption has been a major challenge. BBB also restricts entry of neuro-therapeutic drugs and hinders treatment modalities. Hence, currently nanotechnology-based approaches are being explored on large scale as alternatives to conventional methodologies. It is necessary to investigate the in-depth characteristic features of BBB to facilitate the discovery of novel drugs that can successfully cross the barrier and target the disease effectively. It is imperative to discover novel strategies to treat life-threatening CNS diseases in humans. Therefore, insights regarding building blocks of BBB, activation of immune response on breach of this barrier, and various autoimmune neurological disorders caused due to BBB dysfunction are discussed. Further, special emphasis is given on delineating BBB disruption leading to CNS disorders. Moreover, various mechanisms of transport pathways across BBB, several novel strategies, and alternative routes by which drugs can be properly delivered into CNS are also discussed.
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Affiliation(s)
- Hema Kumari Alajangi
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.,University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Mandeep Kaur
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
| | - Akanksha Sharma
- Department of Biophysics, Panjab University, Chandigarh, 160014, India.,University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Sumedh Rana
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
| | - Shipali Thakur
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
| | - Mary Chatterjee
- Department of Biotechnology, UIET, Panjab University, Chandigarh, 160014, India
| | - Neha Singla
- Department of Biophysics, Panjab University, Chandigarh, 160014, India
| | - Pradeep Kumar Jaiswal
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, 77843, USA.
| | - Gurpal Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India.
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17
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Zhao Y, Gan L, Ren L, Lin Y, Ma C, Lin X. Factors influencing the blood-brain barrier permeability. Brain Res 2022; 1788:147937. [PMID: 35568085 DOI: 10.1016/j.brainres.2022.147937] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 04/28/2022] [Accepted: 05/03/2022] [Indexed: 12/14/2022]
Abstract
The blood-brain barrier (BBB) is a dynamic structure that protects the brain from harmful blood-borne, endogenous and exogenous substances and maintains the homeostatic microenvironment. All constituent cell types play indispensable roles in the BBB's integrity, and other structural BBB components, such as tight junction proteins, adherens junctions, and junctional proteins, can control the barrier permeability. Regarding the need to exchange nutrients and toxic materials, solute carriers, ATP-binding case families, and ion transporter, as well as transcytosis regulate the influx and efflux transport, while the difference in localisation and expression can contribute to functional differences in transport properties. Numerous chemical mediators and other factors such as non-physicochemical factors have been identified to alter BBB permeability by mediating the structural components and barrier function, because of the close relationship with inflammation. In this review, we highlight recently gained mechanistic insights into the maintenance and disruption of the BBB. A better understanding of the factors influencing BBB permeability could contribute to supporting promising potential therapeutic targets for protecting the BBB and the delivery of central nervous system drugs via BBB permeability interventions under pathological conditions.
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Affiliation(s)
- Yibin Zhao
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China
| | - Lin Gan
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China
| | - Li Ren
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yubo Lin
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China
| | - Congcong Ma
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xianming Lin
- The Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China; Department of Neurobiology and Acupuncture Research, Zhejiang Chinese Medical University, Hangzhou, China.
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18
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Chen X, Zhang H, Hao H, Zhang X, Song H, He B, Wang Y, Zhou Y, Zhu Z, Hu Y, Wang Y. Thrombin induces morphological and inflammatory astrocytic responses via activation of PAR1 receptor. Cell Death Dis 2022; 8:189. [PMID: 35399122 PMCID: PMC8995373 DOI: 10.1038/s41420-022-00997-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 03/04/2022] [Accepted: 03/28/2022] [Indexed: 12/30/2022]
Abstract
AbstractSpinal cord injury (SCI) will result in the significant elevation of thrombin production at lesion site via either breakage of blood-spinal cord barrier or upregulated expression within nerve cells. Thrombin-induced activation of the protease activated receptors (PARs) evokes various pathological effects that deteriorate the functional outcomes of the injured cord. The cellular consequences of thrombin action on the astrocytes, as well as the underlying mechanism are not fully elucidated by far. In the present study, SCI model of rats was established by contusion, and primary astrocytes were isolated for culture from newborn rats. The expression levels of thrombin and PAR1 receptor at lesion sites of the spinal cord were determined. The primary astrocytes cultured in vitro were stimulated with different concentration of thrombin, and the resultant morphological changes, inflammatory astrocytic responses, as well as PAR1-activated signal pathway of astrocytes were accordingly examined using various agonists or antagonists of the receptor. Thrombin was found to reverse astrocytic stellation, promote proliferation but inhibit migration of astrocytes. Furthermore, the serine protease was shown to facilitate inflammatory response of astrocytes through regulation of MAPKs/NFκB pathway. Our results have provided the morphological evidence of astrocytic reactivity in response to thrombin stimulation and its neuroinflammatory effects following SCI, which will be indicative for the fundamental insights of thrombin-induced neuropathology.
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19
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Holste KG, Xia F, Ye F, Keep RF, Xi G. Mechanisms of neuroinflammation in hydrocephalus after intraventricular hemorrhage: a review. Fluids Barriers CNS 2022; 19:28. [PMID: 35365172 PMCID: PMC8973639 DOI: 10.1186/s12987-022-00324-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 03/23/2022] [Indexed: 02/08/2023] Open
Abstract
Intraventricular hemorrhage (IVH) is a significant cause of morbidity and mortality in both neonatal and adult populations. IVH not only causes immediate damage to surrounding structures by way of mass effect and elevated intracranial pressure; the subsequent inflammation causes additional brain injury and edema. Of those neonates who experience severe IVH, 25-30% will go on to develop post-hemorrhagic hydrocephalus (PHH). PHH places neonates and adults at risk for white matter injury, seizures, and death. Unfortunately, the molecular determinants of PHH are not well understood. Within the past decade an emphasis has been placed on neuroinflammation in IVH and PHH. More information has come to light regarding inflammation-induced fibrosis and cerebrospinal fluid hypersecretion in response to IVH. The aim of this review is to discuss the role of neuroinflammation involving clot-derived neuroinflammatory factors including hemoglobin/iron, peroxiredoxin-2 and thrombin, as well as macrophages/microglia, cytokines and complement in the development of PHH. Understanding the mechanisms of neuroinflammation after IVH may highlight potential novel therapeutic targets for PHH.
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Affiliation(s)
- Katherine G Holste
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
| | - Fan Xia
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, China
| | - Fenghui Ye
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, 3470 Taubman Center, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109-5338, USA.
- , 5018 BSRB, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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20
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Duan T, Li L, Yu Y, Li T, Han R, Sun X, Cui Y, Liu T, Wang X, Wang Y, Fan X, Liu Y, Zhang H. Traditional Chinese medicine use in the pathophysiological processes of intracerebral hemorrhage and comparison with conventional therapy. Pharmacol Res 2022; 179:106200. [PMID: 35367344 DOI: 10.1016/j.phrs.2022.106200] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/21/2022] [Accepted: 03/28/2022] [Indexed: 12/12/2022]
Abstract
Intracerebral hemorrhage (ICH) refers to hemorrhage caused by non-traumatic vascular rupture in the brain parenchyma, which is characterized by acute onset, severe illness, and high mortality and disability. The influx of blood into the brain tissue after cerebrovascular rupture causes severe brain damage, including primary injury caused by persistent hemorrhage and secondary brain injury (SBI) induced by hematoma. The mechanism of brain injury is complicated and is a significant cause of disability after ICH. Therefore, it is essential to understand the mechanism of brain injury after ICH to develop drugs to prevent and treat ICH. Studies have confirmed that many traditional Chinese medicines (TCM) can reduce brain injury by improving neurotoxicity, inflammation, oxidative stress (OS), blood-brain barrier (BBB), apoptosis, and neurological dysfunction after ICH. Starting from the pathophysiological process of brain injury after ICH, this paper summarizes the mechanisms by which TCM improves cerebral injury after ICH and its comparison with conventional western medicine, so as to provide clues and a reference for the clinical application of TCM in the prevention and treatment of hemorrhagic stroke and further research and development of new drugs.
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Affiliation(s)
- Tian Duan
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Lin Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yajun Yu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Tiantian Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Rui Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xingyi Sun
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yan Cui
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Tao Liu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiaoying Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yu Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiang Fan
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yang Liu
- Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Han Zhang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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21
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Ye Z, Izadi A, Gurkoff GG, Rickerl K, Sharp F, Ander B, Bauer SZ, Lui A, Lyeth BG, Liu D. Combined Inhibition of Fyn and c-Src Protects Hippocampal Neurons and Improves Spatial Memory via ROCK after Traumatic Brain Injury. J Neurotrauma 2022; 39:520-529. [PMID: 35109711 PMCID: PMC8978569 DOI: 10.1089/neu.2021.0311] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Our previous studies demonstrated that TBI and ventricular administration of thrombin caused hippocampal neuron loss and cognitive dysfunction via activation of Src family kinases (SFKs). Based on SFK localization in brain, we hypothesized SFK subtypes Fyn and c-Src as well as SFK downstream molecule Rho-associated protein kinase (ROCK) contribute to cell death and cognitive dysfunction after TBI. We administered nanoparticle wrapped siRNA-Fyn and siRNA-c-Src, or ROCK inhibitor Y-27632 to adult rats subjected to moderate lateral fluid percussion (LFP) induced TBI. Spatial memory function was assessed from 12 to 16 days, and NeuN stained hippocampal neurons were assessed 16 days after TBI. The combination of siRNA-Fyn and siRNA-c-Src, but neither alone, prevented hippocampal neuron loss and spatial memory deficits after TBI. The ROCK inhibitor Y-27632 also prevented hippocampal neuronal loss and spatial memory deficits after TBI. The data suggest that the combined actions of three kinases (Fyn, c-Src, ROCK) mediate hippocampal neuronal cell death and spatial memory deficits produced by LFP-TBI, and that inhibiting this pathway prevents the TBI-induced cell death and memory deficits.
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Affiliation(s)
- Zhouheng Ye
- University of California at Davis Medical Center, Department of Neurology, Davis, California, United States;
| | - Ali Izadi
- University of California, Davis, Neurological Surgery, 1515 Newton Ct, Room 502, Davis, California, United States, 95618;
| | - Gene Gabriel Gurkoff
- University of California, Davis, Neurological Surgery, 1515 Newton Ct, Room 502, Davis, California, United States, 95618;
| | - Kaitlin Rickerl
- University of California at Davis Medical Center, Department of Neurology, Davis, California, United States;
| | - Frank Sharp
- University of California Davis, MIND Institute, Davis, United States;
| | - Bradley Ander
- University of California at Davis Medical Center, Department of Neurology and the M.I.N.D. Institute, Sacramento, California, United States;
| | - Sawyer Z Bauer
- University of California at Davis Medical Center, Department of Neurology, Davis, California, United States;
| | - Austin Lui
- University of California at Davis Medical Center, Department of Neurology, Davis, California, United States;
| | - Bruce G Lyeth
- U.C. Davis, Neurological Surgery, One Shields Ave, Davis, California, United States, 95616;
| | - DaZhi Liu
- University of California at Davis Medical Center, Department of Neurology, Davis, California, United States;
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22
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Abstract
Intraventricular hemorrhage (IVH) remains a major complication of prematurity, worldwide. The severity of IVH is variable, ranging from a tiny germinal matrix bleed to a moderate-to-large ventricular hemorrhage or periventricular hemorrhagic infarction. Survivors with IVH often suffer from hydrocephalus and white matter injury. There is no tangible treatment to prevent post-hemorrhagic cerebral palsy, cognitive deficits, or hydrocephalus in these infants. White matter injury is attributed to blood-induced damage to axons and maturing oligodendrocyte precursors, resulting in reduced myelination and axonal loss. Hydrocephalus results from obstructed CSF circulation by blood clots, increased CSF production, and reduced CSF absorption by lymphatics and arachnoid villi. Several strategies to promote neurological recovery have shown promise in animal models, including the elimination of blood and blood products, alleviating cerebral inflammation and oxidative stress, as well as promoting survival and maturation of oligodendrocyte precursors. The present review integrates novel mechanisms of brain injury in IVH and the imminent therapies to alleviate post-hemorrhagic white matter injury and hydrocephalus in the survivors with IVH.
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Affiliation(s)
| | - Praveen Ballabh
- Children's Hospital at Montefiore, Department of Pediatrics and Dominick P, Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA.
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23
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Qiu H, Qian T, Wu T, Gao T, Xing Q, Wang L. Src Family Kinases Inhibition Ameliorates Hypoxic-Ischemic Brain Injury in Immature Rats. Front Cell Neurosci 2022; 15:746130. [PMID: 34992524 PMCID: PMC8724194 DOI: 10.3389/fncel.2021.746130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/24/2021] [Indexed: 01/06/2023] Open
Abstract
Hypoxic-ischemic (HI) injury is one of the initial factors contributing to neonatal brain injury. Src family kinases (SFKs) are considered to act as molecular hubs for N-methyl-d-aspartate receptor (NMDAR) regulation and participate in the HI injury process. The objectives of this study were to evaluate the levels of phospho-Src (p-Src), the relationship between NMDARs and SFKs, and the effects of SFK inhibition on an immature rat HI brain injury model. The model was induced in 3-day-old Sprague–Dawley rats using the Rice-Vannucci model operation. The level of p-Src was evaluated using Western blotting. The association of NMDARs with SFKs was detected using Western blotting and coimmunoprecipitation. After intraperitoneal injection of 4-amino-5-(4-chlorophenyl)-7-(t-butyl) pyrazolo [3,4-d] pyrimidine (PP2), an SFK-selective inhibitor, neuropathological changes were observed by performing H&E and immunofluorescence staining, and the neurological functions were assessed using the following behavioral tests: modified neurological severity score, open field test, and Morris water maze test. The levels of p-Src first decreased at 0 h after injury, increased at 2 h after injury, and continuously decreased from 6 h to 3 days. Along with the increased p-Src levels observed at 2 h after injury, the phosphorylation of NMDAR subunit NR2B at tyrosine 1472 was increased. Following the administration of PP2, the increased p-Src and NMDAR-2B levels detected at 2 h after injury were decreased, and tissue injury and myelin basic protein expression were improved at 7 days after injury. The PP2 intervention improved the performance of injured rats on behavioral tests. In conclusion, we determined the patterns of p-Src expression after HI brain injury in immature rats and showed a relationship with the activated NMDA receptor. The inhibition of p-Src ameliorates neuropathological changes and damages neurological functions induced by HI injury.
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Affiliation(s)
- Han Qiu
- National Health Commission Key Laboratory of Neonatal Diseases, Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
| | - Tianyang Qian
- National Health Commission Key Laboratory of Neonatal Diseases, Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
| | - Tong Wu
- National Health Commission Key Laboratory of Neonatal Diseases, Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
| | - Ting Gao
- National Health Commission Key Laboratory of Neonatal Diseases, Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
| | - Qinghe Xing
- Department of Neonatology, Children's Hospital of Fudan University and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Laishuan Wang
- National Health Commission Key Laboratory of Neonatal Diseases, Department of Neonatology, Children's Hospital of Fudan University, Shanghai, China
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24
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Zhao YT, Fallas JA, Saini S, Ueda G, Somasundaram L, Zhou Z, Xavier Raj I, Xu C, Carter L, Wrenn S, Mathieu J, Sellers DL, Baker D, Ruohola-Baker H. F-domain valency determines outcome of signaling through the angiopoietin pathway. EMBO Rep 2021; 22:e53471. [PMID: 34698433 DOI: 10.15252/embr.202153471] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 09/09/2021] [Accepted: 09/16/2021] [Indexed: 12/14/2022] Open
Abstract
Angiopoietins 1 and 2 (Ang1 and Ang2) regulate angiogenesis through their similar F-domains by activating Tie2 receptors on endothelial cells. Despite the similarity in the underlying receptor-binding interaction, the two angiopoietins have opposite effects: Ang1 induces phosphorylation of AKT, strengthens cell-cell junctions, and enhances endothelial cell survival while Ang2 can antagonize these effects, depending on cellular context. To investigate the molecular basis for the opposing effects, we examined the phenotypes of a series of computationally designed protein scaffolds presenting the Ang1 F-domain in a wide range of valencies and geometries. We find two broad phenotypic classes distinguished by the number of presented F-domains: Scaffolds presenting 3 or 4 F-domains have Ang2-like activity, upregulating pFAK and pERK but not pAKT, while scaffolds presenting 6, 8, 12, 30, or 60 F-domains have Ang1-like activity, upregulating pAKT and inducing migration and vascular stability. The scaffolds with 6 or more F-domains display super-agonist activity, producing stronger phenotypes at lower concentrations than Ang1. Tie2 super-agonist nanoparticles reduced blood extravasation and improved blood-brain barrier integrity four days after a controlled cortical impact injury.
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Affiliation(s)
- Yan Ting Zhao
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA.,Oral Health Sciences, School of Dentistry, University of Washington, Seattle, WA, USA
| | - Jorge A Fallas
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Shally Saini
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - George Ueda
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Logeshwaran Somasundaram
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - Ziben Zhou
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - Infencia Xavier Raj
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA
| | - Chunfu Xu
- Department of Biochemistry, University of Washington, Seattle, WA, USA
| | - Lauren Carter
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Samuel Wrenn
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Julie Mathieu
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA.,Department of Comparative Medicine, University of Washington, Seattle, WA, USA
| | - Drew L Sellers
- Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - David Baker
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Protein Design, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Hannele Ruohola-Baker
- Department of Biochemistry, University of Washington, Seattle, WA, USA.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, WA, USA.,Oral Health Sciences, School of Dentistry, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
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25
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Wiklund L, Sharma A, Patnaik R, Muresanu DF, Sahib S, Tian ZR, Castellani RJ, Nozari A, Lafuente JV, Sharma HS. Upregulation of hemeoxygenase enzymes HO-1 and HO-2 following ischemia-reperfusion injury in connection with experimental cardiac arrest and cardiopulmonary resuscitation: Neuroprotective effects of methylene blue. PROGRESS IN BRAIN RESEARCH 2021; 265:317-375. [PMID: 34560924 DOI: 10.1016/bs.pbr.2021.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oxidative stress plays an important role in neuronal injuries after cardiac arrest. Increased production of carbon monoxide (CO) by the enzyme hemeoxygenase (HO) in the brain is induced by the oxidative stress. HO is present in the CNS in two isoforms, namely the inducible HO-1 and the constitutive HO-2. Elevated levels of serum HO-1 occurs in cardiac arrest patients and upregulation of HO-1 in cardiac arrest is seen in the neurons. However, the role of HO-2 in cardiac arrest is not well known. In this review involvement of HO-1 and HO-2 enzymes in the porcine brain following cardiac arrest and resuscitation is discussed based on our own observations. In addition, neuroprotective role of methylene blue- an antioxidant dye on alterations in HO under in cardiac arrest is also presented. The biochemical findings of HO-1 and HO-2 enzymes using ELISA were further confirmed by immunocytochemical approach to localize selective regional alterations in cardiac arrest. Our observations are the first to show that cardiac arrest followed by successful cardiopulmonary resuscitation results in significant alteration in cerebral concentrations of HO-1 and HO-2 levels indicating a prominent role of CO in brain pathology and methylene blue during CPR followed by induced hypothermia leading to superior neuroprotection after return of spontaneous circulation (ROSC), not reported earlier.
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Affiliation(s)
- Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| | - Ranjana Patnaik
- Department of Biomaterials, School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| | - Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania; "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Seaab Sahib
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Rudy J Castellani
- Department of Pathology, University of Maryland, Baltimore, MD, United States
| | - Ala Nozari
- Anesthesiology & Intensive Care, Massachusetts General Hospital, Boston, MA, United States
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
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26
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Zolotoff C, Bertoletti L, Gozal D, Mismetti V, Flandrin P, Roche F, Perek N. Obstructive Sleep Apnea, Hypercoagulability, and the Blood-Brain Barrier. J Clin Med 2021; 10:jcm10143099. [PMID: 34300265 PMCID: PMC8304023 DOI: 10.3390/jcm10143099] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 02/07/2023] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by repeated episodes of intermittent hypoxia (IH) and is recognized as an independent risk factor for vascular diseases that are mediated by a multitude of mechanistic pathophysiological cascades including procoagulant factors. The pro-coagulant state contributes to the development of blood clots and to the increase in the permeability of the blood-brain barrier (BBB). Such alteration of BBB may alter brain function and increase the risk of neurodegenerative diseases. We aim to provide a narrative review of the relationship between the hypercoagulable state, observed in OSA and characterized by increased coagulation factor activity, as well as platelet activation, and the underlying neural dysfunction, as related to disruption of the BBB. We aim to provide a critical overview of the existing evidence about the effect of OSA on the coagulation balance (characterized by increased coagulation factor activity and platelet activation) as on the BBB. Then, we will present the emerging data on the effect of BBB disruption on the risk of underlying neural dysfunction. Finally, we will discuss the potential of OSA therapy on the coagulation balance and the improvement of BBB.
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Affiliation(s)
- Cindy Zolotoff
- U1059, Sainbiose, Dysfonction Vasculaire et Hémostase, Université de Lyon, Université Jean Monnet Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France; (L.B.); (F.R.); (N.P.)
- Correspondence: ; Tel.: +33-477-421-452
| | - Laurent Bertoletti
- U1059, Sainbiose, Dysfonction Vasculaire et Hémostase, Université de Lyon, Université Jean Monnet Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France; (L.B.); (F.R.); (N.P.)
- Service de Médecine Vasculaire et Thérapeutique, CHU Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France
| | - David Gozal
- Department of Child Health and the Child Health Research Institute, MU Women’s and Children’s Hospital, University of Missouri, Columbia, MO 65201, USA;
| | - Valentine Mismetti
- Service de Pneumologie et d’Oncologie Thoracique, CHU Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France;
| | - Pascale Flandrin
- Laboratoire d’Hématologie, Hôpital Nord, CHU Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France;
| | - Frédéric Roche
- U1059, Sainbiose, Dysfonction Vasculaire et Hémostase, Université de Lyon, Université Jean Monnet Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France; (L.B.); (F.R.); (N.P.)
- Service de Physiologie Clinique et de l’Exercice, Centre VISAS, CHU Saint Etienne, F-42270 Saint-Priest-en-Jarez, France
| | - Nathalie Perek
- U1059, Sainbiose, Dysfonction Vasculaire et Hémostase, Université de Lyon, Université Jean Monnet Saint-Étienne, F-42270 Saint-Priest-en-Jarez, France; (L.B.); (F.R.); (N.P.)
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27
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Liu Y, Yang H, Fu Y, Pan Z, Qiu F, Xu Y, Yang X, Chen Q, Ma D, Liu Z. TRPV1 Antagonist Prevents Neonatal Sevoflurane-Induced Synaptic Abnormality and Cognitive Impairment in Mice Through Regulating the Src/Cofilin Signaling Pathway. Front Cell Dev Biol 2021; 9:684516. [PMID: 34307363 PMCID: PMC8293754 DOI: 10.3389/fcell.2021.684516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/14/2021] [Indexed: 11/13/2022] Open
Abstract
Long-term neurodevelopmental disorders following neonatal anesthesia have been reported both in young animals and in children. The activation of transient receptor potential vanilloid 1 (TRPV1) channels in hippocampus adversely affects neurodevelopment. The current study explored the underlying mechanism of TRPV1 channels on long-lasting cognitive dysfunction induced by anesthetic exposure to the developing brain. we demonstrated that TRPV1 expression was increased after sevoflurane exposure both in vitro and in vivo. Sevoflurane exposure to hippocampal neurons decreased the synaptic density and the surface GluA1 expression, as well as increased co-localization of internalized AMPAR in early and recycling endosomes. Sevoflurane exposure to newborn mice impaired learning and memory in adulthood, and reduced AMPAR subunit GluA1, 2 and 3 expressions in the crude synaptosomal fractions from mouse hippocampus. The inhibition of TRPV1 reversed the phenotypic changes induced by sevoflurane. Moreover, sevoflurane exposure increased Src phosphorylation at tyrosine 416 site thereby reducing cofilin phosphorylation. TRPV1 blockade reversed these suppressive effects of sevoflurane. Our data suggested that TRPV1 antagonist may protect against synaptic damage and cognitive dysfunction induced by sevoflurane exposure during the brain developing stage.
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Affiliation(s)
- Yuqiang Liu
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Han Yang
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Yifei Fu
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhenglong Pan
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Fang Qiu
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Yanwen Xu
- Shenzhen Key Laboratory of Neurosurgery, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University Health Science Center, Shenzhen, China
| | - Xinping Yang
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Qian Chen
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Zhiheng Liu
- Department of Anesthesiology, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
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White matter injury in infants with intraventricular haemorrhage: mechanisms and therapies. Nat Rev Neurol 2021; 17:199-214. [PMID: 33504979 PMCID: PMC8880688 DOI: 10.1038/s41582-020-00447-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2020] [Indexed: 01/31/2023]
Abstract
Intraventricular haemorrhage (IVH) continues to be a major complication of prematurity that can result in cerebral palsy and cognitive impairment in survivors. No optimal therapy exists to prevent IVH or to treat its consequences. IVH varies in severity and can present as a bleed confined to the germinal matrix, small-to-large IVH or periventricular haemorrhagic infarction. Moderate-to-severe haemorrhage dilates the ventricle and damages the periventricular white matter. This white matter injury results from a constellation of blood-induced pathological reactions, including oxidative stress, glutamate excitotoxicity, inflammation, perturbed signalling pathways and remodelling of the extracellular matrix. Potential therapies for IVH are currently undergoing investigation in preclinical models and evidence from clinical trials suggests that stem cell treatment and/or endoscopic removal of clots from the cerebral ventricles could transform the outcome of infants with IVH. This Review presents an integrated view of new insights into the mechanisms underlying white matter injury in premature infants with IVH and highlights the importance of early detection of disability and immediate intervention in optimizing the outcomes of IVH survivors.
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29
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Erickson MA, Rhea EM, Knopp RC, Banks WA. Interactions of SARS-CoV-2 with the Blood-Brain Barrier. Int J Mol Sci 2021; 22:2681. [PMID: 33800954 PMCID: PMC7961671 DOI: 10.3390/ijms22052681] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 01/08/2023] Open
Abstract
Emerging data indicate that neurological complications occur as a consequence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. The blood-brain barrier (BBB) is a critical interface that regulates entry of circulating molecules into the CNS, and is regulated by signals that arise from the brain and blood compartments. In this review, we discuss mechanisms by which SARS-CoV-2 interactions with the BBB may contribute to neurological dysfunction associated with coronavirus disease of 2019 (COVID-19), which is caused by SARS-CoV-2. We consider aspects of peripheral disease, such as hypoxia and systemic inflammatory response syndrome/cytokine storm, as well as CNS infection and mechanisms of viral entry into the brain. We also discuss the contribution of risk factors for developing severe COVID-19 to BBB dysfunction that could increase viral entry or otherwise damage the brain.
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Affiliation(s)
- Michelle A. Erickson
- Geriatric Research Education and Clinical Center, VA Puget Sound Healthcare System, Seattle, WA 98108, USA; (E.M.R.); (R.C.K.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
| | - Elizabeth M. Rhea
- Geriatric Research Education and Clinical Center, VA Puget Sound Healthcare System, Seattle, WA 98108, USA; (E.M.R.); (R.C.K.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
| | - Rachel C. Knopp
- Geriatric Research Education and Clinical Center, VA Puget Sound Healthcare System, Seattle, WA 98108, USA; (E.M.R.); (R.C.K.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
| | - William A. Banks
- Geriatric Research Education and Clinical Center, VA Puget Sound Healthcare System, Seattle, WA 98108, USA; (E.M.R.); (R.C.K.)
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98104, USA
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30
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Zhao YT, Fallas JA, Saini S, Ueda G, Somasundaram L, Zhou Z, Xavier I, Ehnes D, Xu C, Carter L, Wrenn S, Mathieu J, Sellers DL, Baker D, Ruohola-Baker H. F-domain valency determines outcome of signaling through the angiopoietin pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020. [PMID: 33501432 PMCID: PMC7836102 DOI: 10.1101/2020.09.19.304188] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Angiopoietin 1 and 2 (Ang1 and Ang2) modulate angiogenesis and vascular homeostasis through engagement of their very similar F-domain modules with the Tie2 receptor tyrosine kinase on endothelial cells. Despite this similarity in the underlying receptor binding interaction, the two angiopoietins have opposite effects: Ang1 induces phosphorylation of protein kinase B (AKT), strengthens cell-cell junctions and enhances endothelial cell survival while Ang2 antagonizes these effects1–4. To investigate the molecular basis for the opposing effects, we examined the protein kinase activation and morphological phenotypes produced by a series of computationally designed protein scaffolds presenting the Ang1 F-domain in a wide range of valencies and geometries. We find two broad phenotypic classes distinguished by the number of presented F-domains: scaffolds presenting 4 F-domains have Ang2 like activity, upregulating pFAK and pERK but not pAKT, and failing to induce cell migration and tube formation, while scaffolds presenting 6 or more F-domains have Ang1 like activity, upregulating pAKT and inducing migration and tube formation. The scaffolds with 8 or more F-domains display superagonist activity, producing stronger phenotypes at lower concentrations than Ang1. When examined in vivo, superagonist icosahedral self-assembling nanoparticles caused significant revascularization in hemorrhagic brains after a controlled cortical impact injury.
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31
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Molecular Correlates of Hemorrhage and Edema Volumes Following Human Intracerebral Hemorrhage Implicate Inflammation, Autophagy, mRNA Splicing, and T Cell Receptor Signaling. Transl Stroke Res 2020; 12:754-777. [PMID: 33206327 PMCID: PMC8421315 DOI: 10.1007/s12975-020-00869-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/02/2020] [Accepted: 10/18/2020] [Indexed: 12/16/2022]
Abstract
Intracerebral hemorrhage (ICH) and perihematomal edema (PHE) volumes are major determinants of ICH outcomes as is the immune system which plays a significant role in damage and repair. Thus, we performed whole-transcriptome analyses of 18 ICH patients to delineate peripheral blood genes and networks associated with ICH volume, absolute perihematomal edema (aPHE) volume, and relative PHE (aPHE/ICH; rPHE). We found 440, 266, and 391 genes correlated with ICH and aPHE volumes and rPHE, respectively (p < 0.005, partial-correlation > |0.6|). These mainly represented inflammatory pathways including NF-κB, TREM1, and Neuroinflammation Signaling-most activated with larger volumes. Weighted Gene Co-Expression Network Analysis identified seven modules significantly correlated with these measures (p < 0.05). Most modules were enriched in neutrophil, monocyte, erythroblast, and/or T cell-specific genes. Autophagy, apoptosis, HIF-1α, inflammatory and neuroinflammatory response (including Toll-like receptors), cell adhesion (including MMP9), platelet activation, T cell receptor signaling, and mRNA splicing were represented in these modules (FDR p < 0.05). Module hub genes, potential master regulators, were enriched in neutrophil-specific genes in three modules. Hub genes included NCF2, NCF4, STX3, and CSF3R, and involved immune response, autophagy, and neutrophil chemotaxis. One module that correlated negatively with ICH volume correlated positively with rPHE. Its genes and hubs were enriched in T cell-specific genes including hubs LCK and ITK, Src family tyrosine kinases whose modulation improved outcomes and reduced BBB dysfunction following experimental ICH. This study uncovers molecular underpinnings associated with ICH and PHE volumes and pathophysiology in human ICH, where knowledge is scarce. The identified pathways and hub genes may represent novel therapeutic targets.
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32
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Ye F, Garton HJL, Hua Y, Keep RF, Xi G. The Role of Thrombin in Brain Injury After Hemorrhagic and Ischemic Stroke. Transl Stroke Res 2020; 12:496-511. [PMID: 32989665 DOI: 10.1007/s12975-020-00855-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 02/06/2023]
Abstract
Thrombin is increased in the brain after hemorrhagic and ischemic stroke primarily due to the prothrombin entry from blood either with a hemorrhage or following blood-brain barrier disruption. Increasing evidence indicates that thrombin and its receptors (protease-activated receptors (PARs)) play a major role in brain pathology following ischemic and hemorrhagic stroke (including intracerebral, intraventricular, and subarachnoid hemorrhage). Thrombin and PARs affect brain injury via multiple mechanisms that can be detrimental or protective. The cleavage of prothrombin into thrombin is the key step of hemostasis and thrombosis which takes place in every stroke and subsequent brain injury. The extravascular effects and direct cellular interactions of thrombin are mediated by PARs (PAR-1, PAR-3, and PAR-4) and their downstream signaling in multiple brain cell types. Such effects include inducing blood-brain-barrier disruption, brain edema, neuroinflammation, and neuronal death, although low thrombin concentrations can promote cell survival. Also, thrombin directly links the coagulation system to the immune system by activating interleukin-1α. Such effects of thrombin can result in both short-term brain injury and long-term functional deficits, making extravascular thrombin an understudied therapeutic target for stroke. This review examines the role of thrombin and PARs in brain injury following hemorrhagic and ischemic stroke and the potential treatment strategies which are complicated by their role in both hemostasis and brain.
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Affiliation(s)
- Fenghui Ye
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Hugh J L Garton
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Ya Hua
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Richard F Keep
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Guohua Xi
- Department of Neurosurgery, University of Michigan, R5018 Biomedical Science Research Building, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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33
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Mechanical injury and blood are drivers of spatial memory deficits after rapid intraventricular hemorrhage. Neurobiol Dis 2020; 145:105084. [PMID: 32941979 DOI: 10.1016/j.nbd.2020.105084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/23/2020] [Accepted: 09/09/2020] [Indexed: 12/27/2022] Open
Abstract
Aneurysmal intraventricular hemorrhage (IVH) survivors may recover with significant deficits in learning and memory. The goal of this study was to investigate the mechanism of memory decline after intraventricular aneurysm rupture. We developed an aneurysmal IVH rat model by injecting autologous, arterial blood over the period of two minutes into the right lateral ventricle. We also evaluated the effects of a volume-matched artificial cerebrospinal fluid (CSF) control, thrombin and the mode of delivery (pulsed hand injection versus continuous pump infusion). We performed magnetic resonance brain imaging after 1 and 5 weeks to evaluate for hydrocephalus and histological analysis of the dentate gyrus after 6 weeks. Only animals which underwent a whole blood pulsed hand injection had a spatial memory acquisition and retention deficit 5 weeks later. These animals had larger ventricles at 1 and 5 weeks than animals which underwent a continuous pump infusion of whole blood. We did not find a decline in dentate gyrus granule cell neurons or an impairment in dentate gyrus neurogenesis or differentiation 6 weeks after IVH. Rapid injections of blood or volume resulted in microglial activation in the dentate gyrus. In conclusion, our results point to mechanical injury as the predominant mechanism of memory decline after intraventricular aneurysmal rupture. However, volume-matched pulsed injections of artificial CSF did not create a spatial memory deficit at 5 weeks. Therefore, whole blood itself must play a role in the mechanism. Further research is required to evaluate whether the viscosity of blood causes additional mechanical disruption and hydrocephalus through a primary injury mechanism or whether the toxicity of blood causes a secondary injury mechanism that leads to the observed spatial memory deficit after 5 weeks.
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34
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Romantsik O, Bruschettini M, Ley D. Intraventricular Hemorrhage and White Matter Injury in Preclinical and Clinical Studies. Neoreviews 2020; 20:e636-e652. [PMID: 31676738 DOI: 10.1542/neo.20-11-e636] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Germinal matrix-intraventricular hemorrhage (IVH) occurs in nearly half of infants born at less than 26 weeks' gestation. Up to 50% of survivors with IVH develop cerebral palsy, cognitive deficits, behavioral disorders, posthemorrhagic ventricular dilatation, or a combination of these sequelae. After the initial bleeding and the primary brain injury, inflammation and secondary brain injury might lead to periventricular leukomalacia or diffuse white matter injury. Potential factors that are involved include microglia and astrocyte activation, degradation of blood components with release of "toxic" products, infiltration of the brain by systemic immune cells, death of neuronal and glial cells, and arrest of preoligodendrocyte maturation. In addition, impairment of the blood-brain barrier may play a major role in the pathophysiology. A wide range of animal models has been used to explore causes and mechanisms leading to IVH-induced brain injury. Preclinical studies have identified potential targets for enhancing brain repair. However, little has been elucidated about the effectiveness of potential interventions in clinical studies. A systematic review of available preclinical and clinical studies might help identify research gaps and which types of interventions may be prioritized. Future trials should report clinically robust and long-term outcomes after IVH.
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Affiliation(s)
- Olga Romantsik
- Department of Clinical Sciences Lund, Pediatrics, Lund University, Skane University Hospital, Lund, Sweden
| | - Matteo Bruschettini
- Department of Clinical Sciences Lund, Pediatrics, Lund University, Skane University Hospital, Lund, Sweden
| | - David Ley
- Department of Clinical Sciences Lund, Pediatrics, Lund University, Skane University Hospital, Lund, Sweden
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35
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Iannucci J, Renehan W, Grammas P. Thrombin, a Mediator of Coagulation, Inflammation, and Neurotoxicity at the Neurovascular Interface: Implications for Alzheimer's Disease. Front Neurosci 2020; 14:762. [PMID: 32792902 PMCID: PMC7393221 DOI: 10.3389/fnins.2020.00762] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/29/2020] [Indexed: 12/11/2022] Open
Abstract
The societal burden of Alzheimer’s disease (AD) is staggering, with current estimates suggesting that 50 million people world-wide have AD. Identification of new therapeutic targets is a critical barrier to the development of disease-modifying therapies. A large body of data implicates vascular pathology and cardiovascular risk factors in the development of AD, indicating that there are likely shared pathological mediators. Inflammation plays a role in both cardiovascular disease and AD, and recent evidence has implicated elements of the coagulation system in the regulation of inflammation. In particular, the multifunctional serine protease thrombin has been found to act as a mediator of vascular dysfunction and inflammation in both the periphery and the central nervous system. In the periphery, thrombin contributes to the development of cardiovascular disease, including atherosclerosis and diabetes, by inducing endothelial dysfunction and related inflammation. In the brain, thrombin has been found to act on endothelial cells of the blood brain barrier, microglia, astrocytes, and neurons in a manner that promotes vascular dysfunction, inflammation, and neurodegeneration. Thrombin is elevated in the AD brain, and thrombin signaling has been linked to both tau and amyloid beta, pathological hallmarks of the disease. In AD mouse models, inhibiting thrombin preserves cognition and endothelial function and reduces neuroinflammation. Evidence linking atrial fibrillation with AD and dementia indicates that anticoagulant therapy may reduce the risk of dementia, with targeting thrombin shown to be particularly effective. It is time for “outside-the-box” thinking about how vascular risk factors, such as atherosclerosis and diabetes, as well as the coagulation and inflammatory pathways interact to promote increased AD risk. In this review, we present evidence that thrombin is a convergence point for AD risk factors and as such that thrombin-based therapeutics could target multiple points of AD pathology, including neurodegeneration, vascular activation, and neuroinflammation. The urgent need for disease-modifying drugs in AD demands new thinking about disease pathogenesis and an exploration of novel drug targets, we propose that thrombin inhibition is an innovative tactic in the therapeutic battle against this devastating disease.
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Affiliation(s)
- Jaclyn Iannucci
- The George and Anne Ryan Institute for Neuroscience, The University of Rhode Island, Kingston, RI, United States.,Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, The University of Rhode Island, Kingston, RI, United States
| | - William Renehan
- The George and Anne Ryan Institute for Neuroscience, The University of Rhode Island, Kingston, RI, United States
| | - Paula Grammas
- The George and Anne Ryan Institute for Neuroscience, The University of Rhode Island, Kingston, RI, United States.,Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, The University of Rhode Island, Kingston, RI, United States
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36
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miR-183-5p alleviates early injury after intracerebral hemorrhage by inhibiting heme oxygenase-1 expression. Aging (Albany NY) 2020; 12:12869-12895. [PMID: 32602850 PMCID: PMC7377845 DOI: 10.18632/aging.103343] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022]
Abstract
Differences in microRNA (miRNA) expression after intracerebral hemorrhage (ICH) have been reported in human and animal models, and miRNAs are being investigated as a new treatment for inflammation and oxidative stress after ICH. In this study, we found that microRNA-183-5p expression was decreased in the mouse brain after ICH. To investigate the effect of miRNA-183-5p on injury and repair of brain tissue after ICH, saline, miRNA-183-5p agomir, or miRNA-183-5p antagomir were injected into the lateral ventricles of 8-week-old mice with collagenase-induced ICH. Three days after ICH, mice treated with exogenous miRNA-183-5p showed less brain edema, neurobehavioral defects, inflammation, oxidative stress, and ferrous deposition than control mice. In addition, by alternately treating mice with a heme oxygenase-1 (HO-1) inducer, a HO-1 inhibitor, a nuclear factor erythroid 2-related factor (Nrf2) activator, and Nrf2 knockout, we demonstrated an indirect, HO-1-dependent regulatory relationship between miRNA-183-5p and Nrf2. Our results indicate that miRNA-183-5p and HO-1 are promising therapeutic targets for controlling inflammation and oxidative damage after hemorrhagic stroke.
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37
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Fang Y, Gao S, Wang X, Cao Y, Lu J, Chen S, Lenahan C, Zhang JH, Shao A, Zhang J. Programmed Cell Deaths and Potential Crosstalk With Blood-Brain Barrier Dysfunction After Hemorrhagic Stroke. Front Cell Neurosci 2020; 14:68. [PMID: 32317935 PMCID: PMC7146617 DOI: 10.3389/fncel.2020.00068] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/06/2020] [Indexed: 12/13/2022] Open
Abstract
Hemorrhagic stroke is a life-threatening neurological disease characterized by high mortality and morbidity. Various pathophysiological responses are initiated after blood enters the interstitial space of the brain, compressing the brain tissue and thus causing cell death. Recently, three new programmed cell deaths (PCDs), necroptosis, pyroptosis, and ferroptosis, were also found to be important contributors in the pathophysiology of hemorrhagic stroke. Additionally, blood-brain barrier (BBB) dysfunction plays a crucial role in the pathophysiology of hemorrhagic stroke. The primary insult following BBB dysfunction may disrupt the tight junctions (TJs), transporters, transcytosis, and leukocyte adhesion molecule expression, which may lead to brain edema, ionic homeostasis disruption, altered signaling, and immune infiltration, consequently causing neuronal cell death. This review article summarizes recent advances in our knowledge of the mechanisms regarding these new PCDs and reviews their contributions in hemorrhagic stroke and potential crosstalk in BBB dysfunction. Numerous studies revealed that necroptosis, pyroptosis, and ferroptosis participate in cell death after subarachnoid hemorrhage (SAH) and intracerebral hemorrhage (ICH). Endothelial dysfunction caused by these three PCDs may be the critical factor during BBB damage. Also, several signaling pathways were involved in PCDs and BBB dysfunction. These new PCDs (necroptosis, pyroptosis, ferroptosis), as well as BBB dysfunction, each play a critical role after hemorrhagic stroke. A better understanding of the interrelationship among them might provide us with better therapeutic targets for the treatment of hemorrhagic stroke.
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Affiliation(s)
- Yuanjian Fang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Shiqi Gao
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaoyu Wang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yang Cao
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianan Lu
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Sheng Chen
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Cameron Lenahan
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, United States.,Burrell College of Osteopathic Medicine, Las Cruces, NM, United States.,Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, United States.,Center for Neuroscience Research, Loma Linda University School of Medicine, Loma Linda, CA, United States.,Department of Anesthesiology, Loma Linda University School of Medicine, Loma Linda, CA, United States.,Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Anwen Shao
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jianmin Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Brain Research Institute, Zhejiang University, Hangzhou, China.,Collaborative Innovation Center for Brain Science, Zhejiang University, Hangzhou, China
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38
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Tschoe C, Bushnell CD, Duncan PW, Alexander-Miller MA, Wolfe SQ. Neuroinflammation after Intracerebral Hemorrhage and Potential Therapeutic Targets. J Stroke 2020; 22:29-46. [PMID: 32027790 PMCID: PMC7005353 DOI: 10.5853/jos.2019.02236] [Citation(s) in RCA: 236] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/18/2019] [Indexed: 12/20/2022] Open
Abstract
Spontaneous intracerebral hemorrhage (ICH) is a catastrophic illness causing significant morbidity and mortality. Despite advances in surgical technique addressing primary brain injury caused by ICH, little progress has been made treating the subsequent inflammatory cascade. Pre-clinical studies have made advancements identifying components of neuroinflammation, including microglia, astrocytes, and T lymphocytes. After cerebral insult, inflammation is initially driven by the M1 microglia, secreting cytokines (e.g., interleukin-1β [IL-1β] and tumor necrosis factor-α) that are involved in the breakdown of the extracellular matrix, cellular integrity, and the blood brain barrier. Additionally, inflammatory factors recruit and induce differentiation of A1 reactive astrocytes and T helper 1 (Th1) cells, which contribute to the secretion of inflammatory cytokines, augmenting M1 polarization and potentiating inflammation. Within 7 days of ICH ictus, the M1 phenotype coverts to a M2 phenotype, key for hematoma removal, tissue healing, and overall resolution of inflammation. The secretion of anti-inflammatory cytokines (e.g., IL-4, IL-10) can drive Th2 cell differentiation. M2 polarization is maintained by the secretion of additional anti-inflammatory cytokines by the Th2 cells, suppressing M1 and Th1 phenotypes. Elucidating the timing and trigger of the anti-inflammatory phenotype may be integral in improving clinical outcomes. A challenge in current translational research is the absence of an equivalent disease animal model mirroring the patient population and comorbid pathophysiologic state. We review existing data and describe potential therapeutic targets around which we are creating a bench to bedside translational research model that better reflects the pathophysiology of ICH patients.
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Affiliation(s)
- Christine Tschoe
- Department of Neurological Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Cheryl D Bushnell
- Department of Neurology, Wake Forest Baptist Health, Winston-Salem, NC, USA
| | - Pamela W Duncan
- Department of Neurology, Wake Forest Baptist Health, Winston-Salem, NC, USA.,Department of Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | | | - Stacey Q Wolfe
- Department of Neurological Surgery, Wake Forest School of Medicine, Winston-Salem, NC, USA
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39
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A Tyrosine Switch on NEDD4-2 E3 Ligase Transmits GPCR Inflammatory Signaling. Cell Rep 2019; 24:3312-3323.e5. [PMID: 30232011 PMCID: PMC6226018 DOI: 10.1016/j.celrep.2018.08.061] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/05/2018] [Accepted: 08/21/2018] [Indexed: 02/03/2023] Open
Abstract
Ubiquitination is essential for protein degradation and signaling and pivotal to many physiological processes. Ubiquitination of a subset of G-protein-coupled receptors (GPCRs) by the E3 ligase NEDD4–2 is required for p38 activation, but how GPCRs activate NEDD4–2 to promote ubiquitinmediated signaling is not known. Here, we report that the GPCR protease-activated receptor-1 (PAR1) stimulates c-Src-mediated tyrosine phosphorylation and activation of NEDD4–2 to promote p38 signaling and endothelial barrier disruption. Using mass spectrometry, we identified a unique phosphorylated tyrosine (Y)-485 within the 2,3-linker peptide between WW domain 2 and 3 of NEDD4–2 in agonist-stimulated cells. Mutation of NEDD4–2 Y485 impaired E3 ligase activity and failed to rescue PAR1-stimulated p38 activation and endothelial barrier permeability. The purinergic P2Y1 receptor also required c-Src and NEDD4–2 tyrosine phosphorylation for p38 activation. These studies reveal a novel role for c-Src in GPCR-induced NEDD4–2 activation, which is critical for driving ubiquitin-mediated p38 inflammatory signaling. Grimsey et al. report that GPCRs stimulate activation of NEDD4–2 E3 ubiquitin ligase via c-Src to induce endothelial p38 inflammatory signaling. c-Src phosphorylates NEDD4–2 at tyrosine-485, releasing the autoinhibitory linker peptide that is critical for enhancing E3 ligase activity, and provides mechanistic insight of how GPCRs activate E3 ubiquitin ligases.
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Shao Z, Tu S, Shao A. Pathophysiological Mechanisms and Potential Therapeutic Targets in Intracerebral Hemorrhage. Front Pharmacol 2019; 10:1079. [PMID: 31607923 PMCID: PMC6761372 DOI: 10.3389/fphar.2019.01079] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 08/26/2019] [Indexed: 12/12/2022] Open
Abstract
Intracerebral hemorrhage (ICH) is a subtype of hemorrhagic stroke with high mortality and morbidity. The resulting hematoma within brain parenchyma induces a series of adverse events causing primary and secondary brain injury. The mechanism of injury after ICH is very complicated and has not yet been illuminated. This review discusses some key pathophysiology mechanisms in ICH such as oxidative stress (OS), inflammation, iron toxicity, and thrombin formation. The corresponding therapeutic targets and therapeutic strategies are also reviewed.
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Affiliation(s)
- Zhiwei Shao
- Department of Hepatobiliary and Pancreatic Surgery, Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Sheng Tu
- Department of Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Anwen Shao
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Human intracerebroventricular (ICV) injection of autologous, non-engineered, adipose-derived stromal vascular fraction (ADSVF) for neurodegenerative disorders: results of a 3-year phase 1 study of 113 injections in 31 patients. Mol Biol Rep 2019; 46:5257-5272. [PMID: 31327120 DOI: 10.1007/s11033-019-04983-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022]
Abstract
We have chosen to test the safety of human intracerebroventricular (ICV) brain injections of autologous non-genetically-modified adipose-derived stromal vascular fraction (ADSVF). In this IRB-approved trial, 24 patients received ICV ADSVF via an implanted reservoir between 5/22/14 and 5/22/17. Seven others were injected via their ventriculo-peritoneal shunts. Ten patients had Alzheimer's disease (AD), 6 had amyotrophic lateral sclerosis (ALS), 6 had progressive multiple sclerosis (MS-P), 6 had Parkinson's "Plus" (PD+), 1 had spinal cord injury, 1 had traumatic brain injury, and 1 had stroke. Median age was 74 (range 41-83). Injections were planned every 2-3 months. Thirty-one patients had 113 injections. Patients received SVF injection volumes of 3.5-20 cc (median:4 cc) containing 4.05 × 105 to 6.2 × 107 cells/cc, which contained an average of 8% hematopoietic and 7.5% adipose stem cells. Follow-up ranged from 0 to 36 months (median: 9.2 months). MRIs post injection(s) were unchanged, except for one AD patient whose hippocampal volume increased from < 5th percentile to 48th percentile (NeuroQuant® volumetric MRI). Of the 10 AD patients, 8 were stable or improved in tests of cognition. Two showed improvement in P-tau and ß-amyloid levels. Of the 6 MS-P patients all are stable or improved. Four of 6 ALS patients died of disease progression. Twelve of 111 injections (11%) led to 1-4 days of transient meningismus, and mild temperature elevation, which resolved with acetaminophen and/or dexamethasone. Two (1.8% of injections) required hospitalization for these symptoms. One patient (0.9% of injections) had his reservoir removed and later replaced for presumed infection. In this Phase 1 safety trial, ADSVF was safely injected into the human brain ventricular system in patients with no other treatment options. Secondary endpoints of clinical improvement or stability were particularly promising in the AD and MS-P groups. These results will be submitted for a Phase 2 FDA-approved trial.
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Microglia-derived TNF-α mediates endothelial necroptosis aggravating blood brain-barrier disruption after ischemic stroke. Cell Death Dis 2019; 10:487. [PMID: 31221990 PMCID: PMC6586814 DOI: 10.1038/s41419-019-1716-9] [Citation(s) in RCA: 257] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/22/2019] [Accepted: 06/03/2019] [Indexed: 12/16/2022]
Abstract
Endothelium (EC) is a key component of blood–brain barrier (BBB), and has an important position in the neurovascular unit. Its dysfunction and death after cerebral ischemic/reperfusion (I/R) injury not only promote evolution of neuroinflammation and brain edema, but also increase the risk of intracerebral hemorrhage of thrombolytic therapies. However, the mechanism and specific interventions of EC death after I/R injury are poorly understood. Here we showed that necroptosis was a mechanism underlying EC death, which promoted BBB breakdown after I/R injury. Treatment of rats with receptor interacting protein kinase 1 (RIPK1)-inhibitor, necrostatin-1 reduced endothelial necroptosis and BBB leakage. We furthermore showed that perivascular M1-like microglia-induced endothelial necroptosis leading to BBB disruption requires tumor necrosis factor-α (TNF-α) secreted by M1 type microglia and its receptor, TNF receptor 1 (TNFR1), on endothelium as the primary mediators of these effects. More importantly, anti-TNFα (infliximab, a potent clinically used drug) treatment significantly ameliorate endothelial necroptosis, BBB destruction and improve stroke outcomes. Our data identify a previously unexplored role for endothelial necroptosis in BBB disruption and suggest infliximab might serve as a potential drug for stroke therapy.
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Le CS, Hao XD, Li JW, Zhong JW, Lin HR, Zhou YT, Travis ZD, Tong LS, Gao F. CD200Fc Improves Neurological Function by Protecting the Blood-brain Barrier after Intracerebral Hemorrhage. Cell Transplant 2019; 28:1321-1328. [PMID: 31208229 PMCID: PMC6767889 DOI: 10.1177/0963689719857655] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
CD200 is widely distributed in the central nervous system and plays an essential role in
the immune response in neurological diseases. However, little is currently known about the
effects of CD200 signaling on the blood–brain barrier (BBB) function after intracerebral
hemorrhage (ICH). In this study, the role of CD200 during ICH in an autologous blood
induced mouse ICH model was investigated. Following ICH, critical protein expression, BBB
permeability, and neurological function were measured with or without CD200Fc
administration. Our results showed that both the expression of CD200 and CD200R1 decreased
after ICH and administration of CD200Fc attenuated BBB leakage and improved neurological
functions. In conclusion, our work demonstrated that CD200Fc might be a potential
treatment option for ICH by protecting the BBB and improving functional outcomes.
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Affiliation(s)
- Chen-Sheng Le
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,All the authors contributed equally to this article
| | - Xiao-di Hao
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,All the authors contributed equally to this article
| | - Jia-Wen Li
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Jia-Wei Zhong
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hao-Ran Lin
- College of Pharmaceutical Science, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yi-Ting Zhou
- Department of Pharmacy, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zachary D Travis
- Loma Linda University, School of Medicine, Earth and Biological Sciences, Loma Linda, CA, USA
| | - Lu-Sha Tong
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,All the authors contributed equally to this article
| | - Feng Gao
- Department of Neurology, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China.,All the authors contributed equally to this article
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Safety and Efficacy of Intraventricular Delivery of Bone Marrow-Derived Mesenchymal Stem Cells in Hemorrhagic Stroke Model. Sci Rep 2019; 9:5674. [PMID: 30952961 PMCID: PMC6450980 DOI: 10.1038/s41598-019-42182-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 03/21/2019] [Indexed: 01/01/2023] Open
Abstract
External ventricular drain (EVD) is used clinically to relieve intracranial pressure and occasionally to deliver medications following intracerebral hemorrhage (ICH). Mesenchymal stem cell (MSC) therapy has been shown to be neuroprotective and can induce neuroregeneration in stroke models. We evaluated the safety and efficacy of delivering MSCs intraventricularly in a rat hemorrhagic stroke model. Using autologous blood, hemorrhagic stroke was induced at specific coordinates in the right basal ganglia. After 30 minutes, rats were treated with either bone marrow-derived MSCs or a phosphate-buffered saline placebo via direct intraventricular infusion. Three dosages (2 × 105/kg, 5 × 105/kg, and 1 × 106/kg) of MSCs were administered. Forelimb use asymmetry test was employed to evaluate functional improvement after cell therapy. At the end of the experiment, peripheral blood samples and organs were harvested; biochemistry, cytokine, and growth factor analysis and histology evaluations were performed to explore cell toxicity and cell fate, and the effects of MSC therapy on injury volume, anti-inflammation, and neurogenesis. Intraventricular administration of MSCs in ICH rat model showed improved behavior and alleviated brain damage. Additionally, treated ICH rats showed significantly reduced expression of IL-1α, IL-6, and IFN-γ. No obvious cell toxicity was noticed through blood chemistry and histology evaluation. None of the infused MSCs were detected at the end of the experiment. EVD is safe and effective to use as a method of delivering MSCs to treat ICH. Intraventricularly delivered MSCs have anti-inflammatory properties and a capacity to induce neurogenesis and improve function following ICH injury.
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Burton JC, Grimsey NJ. Ubiquitination as a Key Regulator of Endosomal Signaling by GPCRs. Front Cell Dev Biol 2019; 7:43. [PMID: 30984758 PMCID: PMC6449645 DOI: 10.3389/fcell.2019.00043] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/11/2019] [Indexed: 12/14/2022] Open
Abstract
G protein-coupled receptors (GPCRs) represent the largest family of therapeutic targets for FDA approved drugs. Therefore, understanding the molecular regulation of their signaling pathways is of paramount importance. Similarly, the mitogen activated protein kinase (MAPK) p38 is a critical mediator of proinflammatory disease. Yet despite decades of intense investigation, therapeutically viable inhibitors have struggled to make it into the clinic. New studies describing the regulation and activation of a GPCR dependent atypical p38 signaling pathway represents a novel therapeutic avenue to the treatment of many proinflammatory disorders. These recent studies have defined how thrombin and ADP can induce Src dependent activation of the E3 ubiquitin ligase NEDD4-2. Src dependent phosphorylation of a 2,3-linker peptide releases NEDD4-2 auto-inhibition and triggers the induction of proinflammatory atypical p38 signaling from the endosome. Activation of the atypical p38 pathway requires the direct interaction between an adaptor protein TAB1 and p38, that bypasses the requirement for the classical MKK3/6 dependent activation of p38. Therefore, providing a mechanism to specifically block proinflammatory GPCR atypical p38 activation while leaving basic p38 activity intact. Critically, new studies demonstrated that disruption of the TAB1-p38 interface is a druggable target, that would enable the selective inhibition of proinflammatory p38 signaling and ischemic injury. Atypical p38 signaling is linked to multiple clinically relevant pathologies including inflammation, cardiotoxicity, myocardial ischemia and ischemia reperfusion injury. Therefore, GPCR induced endosomal p38 signaling represents a novel understudied branch of proinflammatory p38 signaling and an ideal potential therapeutic target that warrants further investigation.
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Affiliation(s)
- Jeremy C Burton
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
| | - Neil J Grimsey
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA, United States
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Durocher M, Ander BP, Jickling G, Hamade F, Hull H, Knepp B, Liu DZ, Zhan X, Tran A, Cheng X, Ng K, Yee A, Sharp FR, Stamova B. Inflammatory, regulatory, and autophagy co-expression modules and hub genes underlie the peripheral immune response to human intracerebral hemorrhage. J Neuroinflammation 2019; 16:56. [PMID: 30836997 PMCID: PMC6399982 DOI: 10.1186/s12974-019-1433-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 02/12/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Intracerebral hemorrhage (ICH) has a high morbidity and mortality. The peripheral immune system and cross-talk between peripheral blood and brain have been implicated in the ICH immune response. Thus, we delineated the gene networks associated with human ICH in the peripheral blood transcriptome. We also compared the differentially expressed genes in blood following ICH to a prior human study of perihematomal brain tissue. METHODS We performed peripheral blood whole-transcriptome analysis of ICH and matched vascular risk factor control subjects (n = 66). Gene co-expression network analysis identified groups of co-expressed genes (modules) associated with ICH and their most interconnected genes (hubs). Mixed-effects regression identified differentially expressed genes in ICH compared to controls. RESULTS Of seven ICH-associated modules, six were enriched with cell-specific genes: one neutrophil module, one neutrophil plus monocyte module, one T cell module, one Natural Killer cell module, and two erythroblast modules. The neutrophil/monocyte modules were enriched in inflammatory/immune pathways; the T cell module in T cell receptor signaling genes; and the Natural Killer cell module in genes regulating alternative splicing, epigenetic, and post-translational modifications. One erythroblast module was enriched in autophagy pathways implicated in experimental ICH, and NRF2 signaling implicated in hematoma clearance. Many hub genes or module members, such as IARS, mTOR, S1PR1, LCK, FYN, SKAP1, ITK, AMBRA1, NLRC4, IL6R, IL17RA, GAB2, MXD1, PIK3CD, NUMB, MAPK14, DDX24, EVL, TDP1, ATG3, WDFY3, GSK3B, STAT3, STX3, CSF3R, PIP4K2A, ANXA3, DGAT2, LRP10, FLOT2, ANK1, CR1, SLC4A1, and DYSF, have been implicated in neuroinflammation, cell death, transcriptional regulation, and some as experimental ICH therapeutic targets. Gene-level analysis revealed 1225 genes (FDR p < 0.05, fold-change > |1.2|) have altered expression in ICH in peripheral blood. There was significant overlap of the 1225 genes with dysregulated genes in human perihematomal brain tissue (p = 7 × 10-3). Overlapping genes were enriched for neutrophil-specific genes (p = 6.4 × 10-08) involved in interleukin, neuroinflammation, apoptosis, and PPAR signaling. CONCLUSIONS This study delineates key processes underlying ICH pathophysiology, complements experimental ICH findings, and the hub genes significantly expand the list of novel ICH therapeutic targets. The overlap between blood and brain gene responses underscores the importance of examining blood-brain interactions in human ICH.
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Affiliation(s)
- Marc Durocher
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Bradley P. Ander
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Glen Jickling
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Farah Hamade
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Heather Hull
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Bodie Knepp
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Da Zhi Liu
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Xinhua Zhan
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Anh Tran
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Xiyuan Cheng
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Kwan Ng
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Alan Yee
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Frank R. Sharp
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Boryana Stamova
- Department of Neurology, University of California Davis School of Medicine, Sacramento, CA 95817 USA
- MIND Institute Biosciences Building, 2805 50th Street, Sacramento, CA 95817 USA
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Leclerc JL, Li C, Jean S, Lampert AS, Amador CL, Diller MA, Tolosano E, Doré S. Temporal and age-dependent effects of haptoglobin deletion on intracerebral hemorrhage-induced brain damage and neurobehavioral outcomes. Exp Neurol 2019; 317:22-33. [PMID: 30790555 DOI: 10.1016/j.expneurol.2019.01.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 01/01/2019] [Accepted: 01/17/2019] [Indexed: 12/14/2022]
Abstract
Intracerebral hemorrhage (ICH) is a devastating stroke subtype and the presence of extracorpuscular hemoglobin (Hb) exacerbates brain damage. Haptoglobin (Hp) binds Hb, which prevents its oxidation and participation in neurotoxic reactions. Multiple studies have investigated the role of Hp under conditions of intravascular hemolysis, but little is known about its role in the brain and following ICH where extravascular hemolysis is rampant. Young and aged wildtype and Hp-/- mice underwent the autologous blood or collagenase ICH model. Early after ICH, Hp-/- mice display 58.0 ± 5.6% and 36.7 ± 6.9% less brain damage in the autologous blood and collagenase ICH models, respectively. In line with these findings, Hp-/- mice display less neurological deficits on several neurobehavioral tests. Hp-/- mice have less Perl's iron content, HO1 expression, and blood brain barrier dysfunction, but no difference in brain Hb content, astrogliosis and angiogenesis/neovascularization. At the later endpoint, the young cohort displays 27.8 ± 9.3% less brain damage, while no difference is seen with the aged cohort. For both cohorts, no differences are seen in HO1 levels or iron accumulation, but young Hp-/- mice display less thalamic astrogliosis and striatal microgliosis. This study reveals that the presence or absence of Hp exerts important time- and age-dependent influences on ICH outcomes.
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Affiliation(s)
- Jenna L Leclerc
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America; Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States of America
| | - Chris Li
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America
| | - Stacy Jean
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America
| | - Andrew S Lampert
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America
| | - Claudia Loyola Amador
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America
| | - Matthew A Diller
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America
| | - Emanuela Tolosano
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Sylvain Doré
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States of America; Department of Neuroscience, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States of America; Departments of Neurology, Psychiatry, and Pharmaceutics, University of Florida, Gainesville, FL, United States of America.
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Piao CS, Holloway AL, Hong-Routson S, Wainwright MS. Depression following traumatic brain injury in mice is associated with down-regulation of hippocampal astrocyte glutamate transporters by thrombin. J Cereb Blood Flow Metab 2019; 39:58-73. [PMID: 29135354 PMCID: PMC6311670 DOI: 10.1177/0271678x17742792] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Depression after traumatic brain injury (TBI) is common but the mechanisms by which TBI causes depression are unknown. TBI decreases glutamate transporters GLT-1 and GLAST and allows extravasation of thrombin. We examined the effects of thrombin on transporter expression in primary hippocampal astrocytes. Application of a PAR-1 agonist caused down-regulation of GLT-1, which was prevented by inhibition of Rho kinase (ROCK). To confirm these mechanisms in vivo, we subjected mice to closed-skull TBI. Thrombin activity in the hippocampus increased one day following TBI. Seven days following TBI, expression of GLT-1 and GLAST was reduced in the hippocampus, and this was prevented by administration of the PAR-1 antagonist SCH79797. Inhibition of ROCK attenuated the decrease in GLT-1, but not GLAST, after TBI. We measured changes in glutamate levels in the hippocampus seven days after TBI using an implanted biosensor. Stress-induced glutamate levels were significantly increased following TBI and this was attenuated by treatment with the ROCK inhibitor fasudil. We quantified depressive behavior following TBI and found that inhibition of PAR-1 or ROCK decreased these behaviors. These results identify a novel mechanism by which TBI results in down-regulation of astrocyte glutamate transporters and implicate astrocyte and glutamate transporter dysfunction in depression following TBI.
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Affiliation(s)
- Chun-Shu Piao
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Ashley L Holloway
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Sue Hong-Routson
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,3 Division of Critical Care, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Mark S Wainwright
- 1 Ruth D. & Ken M. Davee Pediatric Neurocritical Care Program, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,2 Division of Neurology, Ann & Robert H Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,3 Division of Critical Care, Ann & Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Thrombin contributes to the injury development and neurological deficit after acute subdural hemorrhage in rats only in collaboration with additional blood-derived factors. BMC Neurosci 2018; 19:81. [PMID: 30591020 PMCID: PMC6307215 DOI: 10.1186/s12868-018-0481-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 12/15/2018] [Indexed: 12/13/2022] Open
Abstract
Background Acute subdural hemorrhage (ASDH) is a severe consequence of traumatic brain injury. The occurrence of subdural blood increases the lethality of these patients independent of the amount of blood or elevated intracranial pressure. Thrombin is one of the potential harmful blood components. Possible harmful effects of thrombin are mediated via the Protease-activated-receptor-1 (PAR1) and thus, translating the acute Thrombin release after ASDH into cell loss. The objectives of the present study were twofold, namely to examine (1) the impact of direct thrombin inhibition in the acute phase after hemorrhage on the long-term histological and functional deficits and (2) the early inhibition of PAR1 activation by thrombin with the selective antagonist SCH79797 on lesion volume at 14 days after ASDH. The effects of thrombin on the lesion size were investigated in two separate experiments via (1) direct thrombin inhibition in the subdural infused blood (Argatroban 600 µg) as well as by (2) intraventricular injection of the PAR-1 antagonist SCH79797 (1 µg or 5 µg). Lesion volume and behavior deficits using a neurological deficit score and a motor function test (beam balance test) were analyzed as outcome parameters at 14 days after injury. Results 59 Male Sprague–Dawley rats received a subdural infusion of 300 µl autologous blood or sham operation. Lesion volume at 14 days after ASDH tended to be smaller in the Argatroban-treated group when compared to the vehicle group (8.1 ± 1.1 vs. 10.1 ± 2.3 mm2, n.s.). Motor deficits in the beam balance test were not significantly less severe in the Argatroban-treated group. Animals treated with SCH79797 also showed a trend towards dose-dependent decreased lesion volume in comparison to the vehicle-treated group (1 μg: 4.3 ± 0.7 mm3; 5 μg: 3.8 ± 1.1 mm3; vehicle: 6.5 ± 2.0 mm3, n.s). Conclusions Thrombin inhibition in the subdural blood and local cerebral blockade of PAR-1 cause a tendency towards reduced lesion volume or functional recovery. All results show a trend in favor of the acute treatment on the outcome parameters. Our results suggests that thrombin could be an important blood-derived factor during acute subdural hemorrhage that translates its deleterious effects in concert with other blood-induced factors.
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50
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Sugiyama T, Imai T, Nakamura S, Yamauchi K, Sawada S, Shimazawa M, Hara H. A novel Nrf2 activator, RS9, attenuates secondary brain injury after intracerebral hemorrhage in sub-acute phase. Brain Res 2018; 1701:137-145. [PMID: 30142309 DOI: 10.1016/j.brainres.2018.08.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 08/07/2018] [Accepted: 08/20/2018] [Indexed: 02/07/2023]
Abstract
The poor prognosis of intracranial hemorrhage (ICH) is attributed to secondary brain injury (SBI), which is caused by oxidative stress. Blood components induce reactive oxygen species (ROS) over-production and cause cytotoxicity. We focused on the antioxidant system and investigated nuclear factor-erythroid 2-related factor 2 (Nrf2), which is a transcription factor that controls several antioxidant enzymes. We examined the effects of a novel Nrf2 activator, RS9, on SBI after ICH. ICH was induced by injecting autologous blood collected from the jugular vein (25 µL) into the striatum of mice. RS9 (0.2 mg/kg, i.p.) was administrated 0, 24, and 48 h after the induction of ICH. Using the ICH model, we measured brain edema, neurological function, neuronal damage and antioxidant proteins expression. We then investigated the mechanisms responsible for the effects of RS9 in vitro using the SH-SY5Y cell line. We used zinc protoporphyrin (ZnPP), a heme oxygenase-1 (HO-1) inhibitor, to elucidate the relationship between HO-1 expression and cell death in vitro in a hemin injury model. RS9 decreased brain edema, improved neurological deficits, decreased neuronal damage area and up-regulated HO-1 and superoxide dismutase 1 (SOD) expressions in the ICH mouse model. RS9 also suppressed neuronal cell death and ROS over-production in vitro. These protective effects were cancelled by the ZnPP co-treatment. Our results suggest that the activation of Nrf2 by RS9 exerts neuroprotective effects that are mediated by the attenuation of oxidative stress, and also that RS9 is an effective therapeutic candidate for the treatment for SBI after ICH.
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Affiliation(s)
- Tomoki Sugiyama
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Takahiko Imai
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Shinsuke Nakamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu 501-1196, Japan.
| | - Keita Yamauchi
- Department of Neurosurgery, Toyohashi Medical Center, Aichi 440-8510, Japan
| | - Shigenobu Sawada
- Department of Neurosurgery, Matsunami General Hospital, 185-1 Dendai, Kasamatsu, Gifu 501-6062, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu 501-1196, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu 501-1196, Japan
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