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Wang D, Saleem S, Sullivan RD, Zhao T, Reed GL. Differences in Acute Expression of Matrix Metalloproteinases-9, 3, and 2 Related to the Duration of Brain Ischemia and Tissue Plasminogen Activator Treatment in Experimental Stroke. Int J Mol Sci 2024; 25:9442. [PMID: 39273389 PMCID: PMC11394866 DOI: 10.3390/ijms25179442] [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: 07/26/2024] [Revised: 08/20/2024] [Accepted: 08/27/2024] [Indexed: 09/15/2024] Open
Abstract
Matrix metalloproteinases (MMPs) such as MMP-9, 3, and 2 degrade the cellular matrix and are believed to play a crucial role in ischemic stroke. We examined how the duration of ischemia (up to 4 h) and treatment with recombinant tissue plasminogen activator altered the comparative expression of these MMPs in experimental ischemic stroke with reperfusion. Both prolonged ischemia and r-tPA treatment markedly increased MMP-9 expression in the ischemic hemisphere (all p < 0.0001). The duration of ischemia and r-tPA treatment also significantly increased MMP-2 expression (p < 0.01-0.001) in the ischemic hemisphere (p < 0.01) but to a lesser degree than MMP-9. In contrast, MMP-3 expression significantly decreased in the ischemic hemisphere (p < 0.001) with increasing duration of ischemia and r-tPA treatment (p < 0.05-0001). MMP-9 expression was prominent in the vascular compartment and leukocytes. MMP-2 expression was evident in the vascular compartment and MMP-3 in NeuN+ neurons. Prolonging the duration of ischemia (up to 4 h) before reperfusion increased brain hemorrhage, infarction, swelling, and neurologic disability in both saline-treated (control) and r-tPA-treated mice. MMP-9 and MMP-2 expression were significantly positively correlated with, and MMP-3 was significantly negatively correlated with, infarct volume, swelling, and brain hemorrhage. We conclude that in experimental ischemic stroke with reperfusion, the duration of ischemia and r-tPA treatment significantly altered MMP-9, 3, and 2 expression, ischemic brain injury, and neurological disability. Each MMP showed unique patterns of expression that are strongly correlated with the severity of brain infarction, swelling, and hemorrhage. In summary, in experimental ischemic stroke in male mice with reperfusion, the duration of ischemia, and r-tPA treatment significantly altered the immunofluorescent expression of MMP-9, 3, and 2, ischemic brain injury, and neurological disability. In this model, each MMP showed unique patterns of expression that were strongly correlated with the severity of brain infarction, swelling, and hemorrhage.
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Affiliation(s)
- Dong Wang
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Sofiyan Saleem
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Ryan D Sullivan
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Tieqiang Zhao
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Guy L Reed
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
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Li W, Abdul Y, Ergul A. Acute Ischemic Stroke by Middle Cerebral Artery Occlusion in Rat Models of Diabetes: Importance of Pre-op and Post-op Care, Severity of Hyperglycemia, and Sex. Methods Mol Biol 2023; 2616:467-479. [PMID: 36715954 DOI: 10.1007/978-1-0716-2926-0_33] [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: 01/31/2023]
Abstract
Diabetes mellitus (DM) is associated with poor stroke outcomes, including high mortality and disability rates. Ischemic injury modeling large artery stroke in diabetic animals also results in high mortality and poor acute and long-term outcomes. In this chapter, we describe middle cerebral artery occlusion (MCAO) in a high-fat diet/low-dose streptozotocin (STZ) model of diabetes including details on pre-op and post-op care that improve survival rate for successful completion of the studies.
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Affiliation(s)
- Weiguo Li
- Department of Pathology & Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Yasir Abdul
- Department of Pathology & Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Adviye Ergul
- Department of Pathology & Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA.
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Chen H, Luo Y, Tsoi B, Gu B, Qi S, Shen J. Angong Niuhuang Wan reduces hemorrhagic transformation and mortality in ischemic stroke rats with delayed thrombolysis: involvement of peroxynitrite-mediated MMP-9 activation. Chin Med 2022; 17:51. [PMID: 35477576 PMCID: PMC9044615 DOI: 10.1186/s13020-022-00595-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/18/2022] [Indexed: 12/22/2022] Open
Abstract
Background Hemorrhagic transformation (HT) is a common complication of delayed tissue plasminogen activator (t-PA) treatment for ischemic stroke. Peroxynitrite plays an important role in the breakdown of blood–brain barrier (BBB) and the development of HT. We tested the hypothesis that Angong Niuhuang Wan (AGNHW), a traditional Chinese medicinal formula, could be used in conjunction with t-PA to protect the BBB, minimize HT, and improve neurological function by suppressing peroxynitrite-mediated matrix metalloproteinase-9 (MMP-9) activation. Methods We first performed quality control study and chemical identification of AGNHW by using UPLC. In animal experiments, male Sprague–Dawley rats were subjected to 5 h of middle cerebral artery occlusion (MCAO) followed by 19 h of reperfusion plus t-PA infusion (10 mg/kg) at 5 h of cerebral ischemia. AGNHW (257 mg/kg) was given orally at 2 h after MCAO. Hemorrhagic transformation was measured using hemorrhagic scores and hemoglobin levels in ischemic brains. Evans blue leakage was utilized to assess the severity of the blood–brain barrier (BBB) damage. The modified neurologic severity score (mNSS) test was used to assess neurological functions. Peroxynitrite and superoxide was detected by using fluorescent probes. MMP-9 activity and expression were examined by gelatin zymography and immunostaining. The antioxidant effects were also studied by using brain microvascular endothelial b.End3 cells exposed to 5 h of oxygen and glucose deprivation (OGD) plus 5 h of reoxygenation with t-PA treatment (20 µg/ml). Results AGNHW significantly reduced the BBB damage, brain edema, reduced hemorrhagic transformation, enhanced neurological function, and reduced mortality rate in the ischemic stroke rats with t-PA treatment. AGNHW reduced peroxynitrite and superoxide in vivo and in vitro and six active chemical compounds were identified from AGNHW with peroxynitrite scavenging activity. Furthermore, AGNHW inhibited MMP-9 activity, and preserved tight junction protein claudin-5 and collagen IV in the ischemic brains. Conclusion AGNHW could be a potential adjuvant therapy with t-PA to protect the BBB integrity, reduce HT, and improve therapeutic outcome in ischemic stroke treatment via inhibiting peroxynitrite-mediated MMP-9 activation. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13020-022-00595-7.
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Affiliation(s)
- Hansen Chen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Yunxia Luo
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Bun Tsoi
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, People's Republic of China
| | - Bing Gu
- School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China
| | - Suhua Qi
- School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China.
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, People's Republic of China. .,State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong, China. .,School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China.
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Choi JM, Seo SY, Kim PJ, Kim YS, Lee SH, Sohn JH, Kim DK, Lee JJ, Kim C. Prediction of Hemorrhagic Transformation after Ischemic Stroke Using Machine Learning. J Pers Med 2021; 11:863. [PMID: 34575640 PMCID: PMC8470833 DOI: 10.3390/jpm11090863] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/25/2021] [Accepted: 08/28/2021] [Indexed: 12/27/2022] Open
Abstract
Hemorrhagic transformation (HT) is one of the leading causes of a poor prognostic marker after acute ischemic stroke (AIS). We compared the performances of the several machine learning (ML) algorithms to predict HT after AIS using only structured data. A total of 2028 patients with AIS, who were admitted within seven days of symptoms onset, were included in this analysis. HT was defined based on the criteria of the European Co-operative Acute Stroke Study-II trial. The whole dataset was randomly divided into a training and a test dataset with a 7:3 ratio. Binary logistic regression, support vector machine, extreme gradient boosting, and artificial neural network (ANN) algorithms were used to assess the performance of predicting the HT occurrence after AIS. Five-fold cross validation and a grid search technique were used to optimize the hyperparameters of each ML model, which had its performance measured by the area under the receiver operating characteristic (AUROC) curve. Among the included AIS patients, the mean age and number of male subjects were 69.6 years and 1183 (58.3%), respectively. HT was observed in 318 subjects (15.7%). There were no significant differences in corresponding variables between the training and test dataset. Among all the ML algorithms, the ANN algorithm showed the best performance in terms of predicting the occurrence of HT in our dataset (0.844). Feature scaling including standardization and normalization, and the resampling strategy showed no additional improvement of the ANN's performance. The ANN-based prediction of HT after AIS showed better performance than the conventional ML algorithms. Deep learning may be used to predict important outcomes for structured data-based prediction.
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Affiliation(s)
- Jeong-Myeong Choi
- Department of Convergence Software, Hallym University, Chuncheon 24252, Korea; (J.-M.C.); (S.-Y.S.); (Y.-S.K.)
| | - Soo-Young Seo
- Department of Convergence Software, Hallym University, Chuncheon 24252, Korea; (J.-M.C.); (S.-Y.S.); (Y.-S.K.)
| | - Pum-Jun Kim
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
| | - Yu-Seop Kim
- Department of Convergence Software, Hallym University, Chuncheon 24252, Korea; (J.-M.C.); (S.-Y.S.); (Y.-S.K.)
| | - Sang-Hwa Lee
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
- Department of Neurology, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
| | - Jong-Hee Sohn
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
- Department of Neurology, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
| | - Dong-Kyu Kim
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
- Department of Otorhinolaryngology and Head and Neck Surgery, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
| | - Jae-Jun Lee
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
- Department of Anesthesiology and Pain Medicine, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
| | - Chulho Kim
- Institute of New Frontier Research Team, Hallym University College of Medicine, Chuncheon 24252, Korea; (P.-J.K.); (S.-H.L.); (J.-H.S.); (D.-K.K.); (J.-J.L.)
- Department of Neurology, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
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Yuan C, Chen S, Ruan Y, Liu Y, Cheng H, Zeng Y, Chen Y, Cheng Q, Huang G, He W, He J. The Stress Hyperglycemia Ratio is Associated with Hemorrhagic Transformation in Patients with Acute Ischemic Stroke. Clin Interv Aging 2021; 16:431-442. [PMID: 33727806 PMCID: PMC7955757 DOI: 10.2147/cia.s280808] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/05/2021] [Indexed: 01/04/2023] Open
Abstract
Background Hemorrhagic transformation (HT) is a severe complication occurring in acute ischemic stroke (AIS) patients. Stress hyperglycemia is frequent in patients with acute illness such as stroke. We aimed to explore the association between stress hyperglycemia and HT in AIS patients. Methods A total of 287 consecutive participants with HT and 285 age- and sex-matched stroke patients without HT were enrolled in this study. Baseline glucose and glycated hemoglobin (HbA1c) levels were collected to measure stress hyperglycemia. The stress hyperglycemia ratio (SHR) was calculated by dividing the fasting plasma glucose at admission with HbA1c. HT was diagnosed by follow-up imaging assessment, and was radiologically classified as hemorrhagic infarction type (HI) 1 or 2 or parenchymal hematoma type (PH) 1 or 2. Results Univariate analysis showed that SHR is significantly higher among patients with HT than those without HT. Compared to the patients in the lower three quartiles of SHR, the incidence of HT was significantly higher among patients with the highest quartile of SHR in total population, diabetic and non-diabetic population. We also observed that patients with the highest SHR quartile were associated with an increased risk of hemorrhagic transformation after adjusted for potential covariates (68.4% versus 39.1%; adjusted odds ratio, 2.320; 95% confidence interval, 1.207-4.459; P=0.012). Conclusion The stress hyperglycemia ratio, representing the state of stress hyperglycemia, was significantly associated with an increased risk of hemorrhagic transformation in patients with acute ischemic stroke.
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Affiliation(s)
- Chengxiang Yuan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Siyan Chen
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Yiting Ruan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Yuntao Liu
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Haoran Cheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Yaying Zeng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Yunbin Chen
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Qianqian Cheng
- School of Mental Health, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Guiqian Huang
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Weilei He
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Jincai He
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
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Liu Y, Ma J, Shi Q, Xin S, Yu H, Liu Z, Pang C, Dong F, Wang J. Quantitatively monitoring acute ischemic stroke patients post recombinant tissue plasminogen activator treatment. Health Sci Rep 2021; 4:e218. [PMID: 33364440 PMCID: PMC7752160 DOI: 10.1002/hsr2.218] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 10/13/2020] [Accepted: 11/12/2020] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND AIMS Thrombolytic therapy is widely used to treat acute ischemic stroke (AIS) patients. As intracerebral hemorrhage is a life-threatening complication of this therapy, monitoring the fibrinolytic and coagulation systems is imperative. However, existing studies on plasmin inhibitor complex (PIC) and thrombin-antithrombin III complex (TAT) mostly apply the enzyme-linked immunosorbent assay (ELISA) method. The aim of this study is to establish the baseline of thrombolytic treatment for AIS patients; to monitor the fibrinolytic and coagulation system following alteplase administration; to ascertain the proper time point to predict intracerebral hemorrhage. METHODS The method used to assess a patient's intravascular situation, namely chemiluminescence, was used to quantitatively assess the PIC, TAT, and thrombomodulin (TM). Immuno-turbidimetric was used to assess the concentration of D-dimer, fibrin/fibrinogen degradation products (FDP), and the Von Willebrand factor (vWF). The Clauss clotting method was used to assay the activated partial thromboplastin time (APTT), prothrombin time (PT) and FIB. RESULTS PIC increased to its peak concentration at 3 hours post intravenous (IV) alteplase infusion and decreased by nearly 50% every 3 hours thereafter. After 24 hours, PIC returned to its normal range, while D-dimer and FDP decreased 3 hours later compared to PIC. PT and APTT exhibited no obvious change during the 24-hour period. TM also exhibited no changes during the treatment. CONCLUSION PIC decreased 3 hours earlier than D-dimer and FDP. The combined test of PIC, D-dimer, and fibrinogen can be used to monitor the fibrinolytic system after the IV alteplase infusion. The use of IV alteplase had no impact on the endothelium. Creating a patient's individual data curve could assist in the prediction of hemorrhagic transformation (HT) and a stroke occurring.
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Affiliation(s)
- Yonge Liu
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Jingting Ma
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Qiyang Shi
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Shimeng Xin
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Haojia Yu
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Zilong Liu
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Chunsong Pang
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Feng Dong
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
| | - Jinghan Wang
- Emergency LaboratoryThe second hospital of Dalian Medical UniversityDalianChina
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Matrix Metalloproteinase-9 Expression is Enhanced by Ischemia and Tissue Plasminogen Activator and Induces Hemorrhage, Disability and Mortality in Experimental Stroke. Neuroscience 2021; 460:120-129. [PMID: 33465414 DOI: 10.1016/j.neuroscience.2021.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 12/29/2022]
Abstract
Matrix metalloproteinase-9 (MMP-9) degrades collagen and other cellular matrix proteins. After acute ischemic stroke, increased MMP-9 levels are correlated with hemorrhage, lack of reperfusion and stroke severity. Nevertheless, definitive data that MMP-9 itself causes poor outcomes in ischemic stroke are limited. In a model of experimental ischemic stroke with reperfusion, we examined whether ischemia and recombinant tissue plasminogen activator (r-tPA) therapy affected MMP-9 expression, and we used specific inhibitors to test if MMP-9 affects brain injury and recovery. After stroke, MMP-9 expression increased significantly in the ischemic vs. non-ischemic hemisphere of the brain (p < 0.001). MMP-9 expression in the ischemic, but not the non-ischemic hemisphere, was further increased by r-tPA treatment (p < 0.001). To determine whether MMP-9 expression contributed to stroke outcomes after r-tPA treatment, we tested three different antibody MMP-9 inhibitors. When compared to treatment with r-tPA and saline, treatment with r-tPA and MMP-9 antibody inhibitors significantly reduced brain hemorrhage by 11.3 to 38.6-fold (p < 0.01), brain swelling by 2.8 to 4.3-fold (p < 0.001) and brain infarction by 2.5 to 3.9-fold (p < 0.0001). Similarly, when compared to treatment with r-tPA and saline, treatment with r-tPA and an MMP-9 antibody inhibitor significantly improved neurobehavioral outcomes (p < 0.001), decreased weight loss (p < 0.001) and prolonged survival (p < 0.01). In summary, both prolonged ischemia and r-tPA selectively enhanced MMP-9 expression in the ischemic hemisphere. When administered with r-tPA, specific MMP-9 inhibitors markedly reduced brain hemorrhage, swelling, infarction, disability and death, which suggests that blocking the deleterious effects of MMP-9 may improve outcomes after ischemic stroke.
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Yuan CX, Ruan YT, Zeng YY, Cheng HR, Cheng QQ, Chen YB, He WL, Huang GQ, He JC. Liver Fibrosis Is Associated With Hemorrhagic Transformation in Patients With Acute Ischemic Stroke. Front Neurol 2020; 11:867. [PMID: 33013622 PMCID: PMC7512114 DOI: 10.3389/fneur.2020.00867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/07/2020] [Indexed: 12/05/2022] Open
Abstract
Background: Hemorrhagic transformation (HT) is a frequent, often asymptomatic event that occurs after acute ischemic stroke (AIS). Liver fibrosis, usually subclinical, is common and crucial in the development of liver disease. We aimed to investigate the association between liver fibrosis and HT in patients with AIS. Methods: We performed a single-center and retrospective study. A total of 185 consecutive participants with HT and 199 age- and sex-matched stroke patients without HT were enrolled in this study. We calculated one validated fibrosis index—Fibrosis-4 (FIB-4) score—to assess the extent of liver fibrosis. HT was detected by routine CT or MRI and was radiologically classified as hemorrhagic infarction type 1 or 2 or parenchymal hematoma type 1 or 2. HT was also classified into asymptomatic or symptomatic. We used logistic regression models adjusted for previously established risk factors to assess the risks for HT. Results: The median FIB-4 score was significantly higher among patients who developed HT than among those without HT, whereas standard hepatic assays were largely normal. Patients were assigned to groups of high FIB-4 score and low FIB-4 score based on the optimal cutoff value. Compared with the subjects in the low-FIB-4-score group, incidence of HT for the high-FIB-4-score group was significantly higher. After adjustment for potential confounders, the patients with high FIB-4 score had 3.461-fold risk of HT in AIS compared to the patients with low FIB-4 score [odds ratio, 3.461 (95% CI, 1.404–8.531)]. Conclusion: Liver fibrosis, measured by FIB-4 score, was independently associated with the risk of HT in AIS patients.
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Affiliation(s)
- Cheng-Xiang Yuan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yi-Ting Ruan
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ya-Ying Zeng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hao-Ran Cheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qian-Qian Cheng
- School of Mental Health, Wenzhou Medical University, Wenzhou, China
| | - Yun-Bin Chen
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei-Lei He
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Gui-Qian Huang
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jin-Cai He
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Wang Y, Qiu K, Song Q, Cheng Y, Liu J, Liu M. AST to ALT ratio and risk of hemorrhagic transformation in patients with acute ischemic stroke. Neurol Res 2020; 42:980-986. [PMID: 32697140 DOI: 10.1080/01616412.2020.1796403] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Hemorrhagic transformation (HT) is a common complication of ischemic stroke. We performed this study to determine whether aspartate aminotransferase (AST) to alanine aminotransferase (ALT) ratio (AAR) was related to HT, as well as compare the predictive values of AAR, ALT and AST for HT in patients with ischemic stroke. METHODS We included ischemic stroke patients within 7 days of onset. HT was identified by a follow-up imaging examination. Univariate and multivariate logistic regression models were performed to assess the association between AAR and HT. Net reclassification index (NRI) was calculated to assess the ability of AAR, AST and ALT to reclassify risks of HT. RESULTS A total of 2042 (median age: 69 years; 63.2% males) patients were included in this study, of whom 232 (11.4%) were identified as HT. The receiver-operating characteristic curve analysis showed that the optimal cut-off value for AAR to predict HT was 1.22. Higher AAR (≥1.22) was an independent predictor associated with HT (OR 1.44, 95%CI 1.06-1.97, P = 0.02) after adjusting for covariates. A U-shaped dose-effect relationship was found between AAR level and HT in logistic regression model with restricted cubic splines. In addition, adding AAR to a model containing conventional risk factors significantly improved predictive power for HT (NRI: 15.4%, P = 0.027), but not for ALT (NRI: 10.3%, P = 0.141) or AST (NRI: 8.3%, P = 0.237). CONCLUSIONS Higher AAR was associated with an increased risk of HT after ischemic stroke. In addition, AAR might be a better biomarker for predicting HT than ALT or AST.
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Affiliation(s)
- Yanan Wang
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Ke Qiu
- West China School of Medicine, Sichuan University , Sichuan, China
| | - Quhong Song
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Yajun Cheng
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Junfeng Liu
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
| | - Ming Liu
- Department of Neurology, West China Hospital, Sichuan University , Sichuan, China
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Liddle LJ, Prokop BJ, Dirks CA, Demchuk A, Almekhlafi M, Colbourne F. Infusion of Cold Saline into the Carotid Artery Does Not Affect Outcome After Intrastriatal Hemorrhage. Ther Hypothermia Temp Manag 2020; 10:171-178. [PMID: 32456561 PMCID: PMC7482714 DOI: 10.1089/ther.2020.0010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Localized brain hypothermia (HYPO) can be achieved by infusing cold saline into the carotid artery of animals and patients. Studies suggest that HYPO improves behavioral and histological outcomes in focal ischemia models. Given that ischemic stroke and intracerebral hemorrhage (ICH) share pathophysiological overlap, we tested whether cold saline infusion is safe and neuroprotective when given during collagenase-induced ICH. Eighty-five adult male Sprague-Dawley rats were used. Experiment 1 investigated brain and body temperature changes associated with a cold saline infusion paradigm that was scaled from patients according to brain weight and blood volume (3 mL/20-minute infusion). Experiment 2 determined whether HYPO aggravated bleeding volume. Experiment 3 investigated if cerebral edema or elemental concentrations were altered by HYPO. We also collected core body temperature and activity data through telemetry. Experiment 4 investigated whether behavioral outcomes (e.g., skilled reaching) and tissue loss were influenced by HYPO. Our HYPO protocol decreased the ipsilateral striatal temperature by ∼0.20°C (p < 0.001), with no other effects. HYPO did not affect hematoma volume (p = 0.64), cerebral edema (p = 0.34), or elemental concentrations (p = 0.49) at 24 hours post-ICH. Although ICH caused persistent behavioral impairments, HYPO did not improve behavioral outcomes (measured by a neurological deficit scale, cylinder, and the staircase test; p > 0.05 for all). Brain tissue loss was not different between groups on day 28 post-ICH (p = 0.90). Although cold saline infusion appears to be safe in the acute post-ICH period, there was no evidence that this therapy improved outcome. However, our treatment protocol was relatively mild and additional interventions might help improve efficacy. Finally, our findings may also speak to the safety of this cooling approach in focal ischemia where hemorrhagic transformation is a risk; future studies on this issue are needed.
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Affiliation(s)
- Lane J Liddle
- Department of Psychology, University of Alberta, Edmonton, Canada
| | | | | | | | | | - Frederick Colbourne
- Department of Psychology, University of Alberta, Edmonton, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Canada
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11
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Chen H, Guan B, Wang B, Pu H, Bai X, Chen X, Liu J, Li C, Qiu J, Yang D, Liu K, Wang Q, Qi S, Shen J. Glycyrrhizin Prevents Hemorrhagic Transformation and Improves Neurological Outcome in Ischemic Stroke with Delayed Thrombolysis Through Targeting Peroxynitrite-Mediated HMGB1 Signaling. Transl Stroke Res 2019; 11:967-982. [PMID: 31872339 DOI: 10.1007/s12975-019-00772-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 11/17/2019] [Accepted: 12/09/2019] [Indexed: 01/22/2023]
Abstract
Peroxynitrite (ONOO-) and high mobility group box 1 protein (HMGB1) are important cytotoxic factors contributing to cerebral ischemia-reperfusion injury. However, the roles of ONOO- in mediating HMGB1 expression and its impacts on hemorrhagic transformation (HT) in ischemic brain injury with delayed t-PA treatment remain unclear. In the present study, we tested the hypothesis that ONOO- could directly mediate the activation and release of HMGB1 in ischemic brains with delayed t-PA treatment. With clinical studies, we found that plasma nitrotyrosine (NT, a surrogate marker of ONOO-) was positively correlated with HMGB1 level in acute ischemic stroke patients. Hemorrhagic transformation and t-PA-treated ischemic stroke patients had increased levels of nitrotyrosine and HMGB1 in plasma. In animal experiments, we found that FeTmPyP, a representative ONOO- decomposition catalyst (PDC), significantly reduced the expression of HMGB1 and its receptor TLR2, and inhibited MMP-9 activation, preserved collagen IV and tight junction claudin-5 in ischemic rat brains with delayed t-PA treatment. ONOO- donor SIN-1 directly induced expression of HMGB1 and its receptor TLR2 in naive rat brains in vivo and induced HMGB1 in brain microvascular endothelial b.End3 cells in vitro. Those results suggest that ONOO- could activate HMGB1/TLR2/MMP-9 signaling. We then addressed whether glycyrrhizin, a natural HMGB1 inhibitor, could inhibit ONOO- production and the antioxidant properties of glycyrrhizin contribute to the inhibition of HMGB1 and the neuroprotective effects on attenuating hemorrhagic transformation in ischemic stroke with delayed t-PA treatment. Glycyrrhizin treatment downregulated the expressions of NADPH oxidase p47 phox and p67 phox and iNOS, inhibited superoxide and ONOO- production, reduced the expression of HMGB1, TLR2, MMP-9, preserved type IV collagen and claudin-5 in ischemic brains. Furthermore, glycyrrhizin significantly decreased the mortality rate, attenuated hemorrhagic transformation, brain swelling, blood-brain barrier damage, neuronal apoptosis, and improved neurological outcomes in the ischemic stroke rat model with delayed t-PA treatment. In conclusion, peroxynitrite-mediated HMGB1/TLR2 signaling contributes to hemorrhagic transformation, and glycyrrhizin could be a potential adjuvant therapy to attenuate hemorrhagic transformation, possibly through inhibiting the ONOO-/HMGB1/TLR2 signaling cascades.
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Affiliation(s)
- Hansen Chen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, China.,Institute of Research and Innovation (HKU-SIRI), The University of Hong Kong-Shenzhen, Shenzhen, China
| | - Binghe Guan
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, China
| | - Bin Wang
- School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China
| | - Haiwei Pu
- School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China
| | - Xiaoyu Bai
- Department of Chemistry, Morningside Laboratory for Chemical Biology, The University of Hong Kong, Hong Kong, SAR, China
| | - Xi Chen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, China.,Department of Core Facility, The People's Hospital of Bao-an, Shenzhen, China
| | - Jihong Liu
- Department of Neurology, Huizhou First Hospital, Huizhou, Guangdong, China
| | - Caiming Li
- Department of Neurology, Huizhou First Hospital, Huizhou, Guangdong, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, Guangdong, China
| | - Dan Yang
- Department of Chemistry, Morningside Laboratory for Chemical Biology, The University of Hong Kong, Hong Kong, SAR, China
| | - Kejian Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of New Mexico, Albuquerque, NM, 87131, USA
| | - Qi Wang
- Institution of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Suhua Qi
- School of Medical Technology, Xuzhou Medical University, Xuzhou, 221002, China.
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, 10 Sassoon Road, Pokfulam, Hong Kong, SAR, China. .,Institute of Research and Innovation (HKU-SIRI), The University of Hong Kong-Shenzhen, Shenzhen, China. .,Institution of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, China.
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12
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Bruch GE, Fernandes LF, Bassi BL, Alves MTR, Pereira IO, Frézard F, Massensini AR. Liposomes for drug delivery in stroke. Brain Res Bull 2019; 152:246-256. [DOI: 10.1016/j.brainresbull.2019.07.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 06/26/2019] [Accepted: 07/12/2019] [Indexed: 12/26/2022]
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13
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Chen H, Chen X, Luo Y, Shen J. Potential molecular targets of peroxynitrite in mediating blood–brain barrier damage and haemorrhagic transformation in acute ischaemic stroke with delayed tissue plasminogen activator treatment. Free Radic Res 2018; 52:1220-1239. [PMID: 30468092 DOI: 10.1080/10715762.2018.1521519] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hansen Chen
- School of Chinese Medicine, the University of Hong Kong, PR China
- Shenzhen Institute of Research and Innovation (HKU-SIRI), University of Hong Kong, Hong Kong, PR China
| | - Xi Chen
- Department of Core Facility, the People’s Hospital of Bao-an Shenzhen, Shenzhen, PR China
- The 8th People’s Hospital of Shenzhen, the Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, PR China
| | - Yunhao Luo
- School of Chinese Medicine, the University of Hong Kong, PR China
| | - Jiangang Shen
- School of Chinese Medicine, the University of Hong Kong, PR China
- Shenzhen Institute of Research and Innovation (HKU-SIRI), University of Hong Kong, Hong Kong, PR China
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14
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Intravenous xenogeneic human cardiosphere-derived cell extracellular vesicles (exosomes) improves behavioral function in small-clot embolized rabbits. Exp Neurol 2018; 307:109-117. [DOI: 10.1016/j.expneurol.2018.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/07/2018] [Accepted: 06/13/2018] [Indexed: 12/20/2022]
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15
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Ishrat T, Soliman S, Eldahshan W, Pillai B, Ergul A, Fagan SC. Silencing VEGF-B Diminishes the Neuroprotective Effect of Candesartan Treatment After Experimental Focal Cerebral Ischemia. Neurochem Res 2018; 43:1869-1878. [PMID: 30088238 DOI: 10.1007/s11064-018-2604-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 07/23/2018] [Accepted: 08/02/2018] [Indexed: 12/26/2022]
Abstract
The pro-survival effect of VEGF-B has been documented in different in vivo and in vitro models. We have previously shown an enhanced VEGF-B expression in response to candesartan treatment after focal cerebral ischemia. In this study, we aimed to silence VEGF-B expression to assess its contribution to candesartan's benefit on stroke outcome. Silencing VEGF-B expression was achieved by bilateral intracerebroventricular injections of lentiviral particles containing short hairpin RNA (shRNA) against VEGF-B. Two weeks after lentiviral injections, rats were subjected to either 90 min or 3 h of middle cerebral artery occlusion (MCAO) and randomized to intravenous candesartan (1 mg/kg) or saline at reperfusion. Animals were sacrificed at 24 or 72 h and brains were collected and analyzed for hemoglobin (Hb) excess and infarct size, respectively. Functional outcome at 24, 48 and 72 h was assessed blindly. Candesartan treatment improved neurobehavioral and motor function, and decreased infarct size and Hb. While silencing VEGF-B expression diminished candesartan's neuroprotective effect, candesartan-mediated vascular protection was maintained even in the absence of VEGF-B suggesting that this growth factor is not the mediator of candesartan's vascular protective effects. However, VEGF-B is a mediator of neuroprotection achieved by candesartan and represents a potential drug target to improve stroke outcome. Further studies are needed to elucidate the underlying molecular mechanisms of VEGF-B in neuroprotection and recovery after ischemic stroke.
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Affiliation(s)
- Tauheed Ishrat
- Department of Anatomy and Neurobiology, College of Medicine, University of Tennessee Health Science Center (UTHSC), 855 Monroe Ave, Rm 231-Wittenborg bldg., Memphis, TN, 38163, USA.
| | - Sahar Soliman
- Charlie Norwood VA Medical Center, and Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA
| | - Wael Eldahshan
- Charlie Norwood VA Medical Center, and Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA
| | - Bindu Pillai
- Charlie Norwood VA Medical Center, and Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA
| | - Adviye Ergul
- Charlie Norwood VA Medical Center, and Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA.,Department of Physiology, Augusta University, Augusta, GA, USA
| | - Susan C Fagan
- Charlie Norwood VA Medical Center, and Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA.,Department of Neurology, Augusta University, Augusta, GA, USA
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16
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Shi ZS, Duckwiler GR, Jahan R, Tateshima S, Szeder V, Saver JL, Kim D, Sharma LK, Vespa PM, Salamon N, Villablanca JP, Viñuela F, Feng L, Loh Y, Liebeskind DS. Early Blood-Brain Barrier Disruption after Mechanical Thrombectomy in Acute Ischemic Stroke. J Neuroimaging 2018; 28:283-288. [PMID: 29484769 DOI: 10.1111/jon.12504] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 01/31/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND AND PURPOSE The impact of blood-brain barrier (BBB) disruption can be detected by intraparenchymal hyperdense lesion on the computed tomography (CT) scan after endovascular stroke therapy. The purpose of this study was to determine whether early BBB disruption predicts intracranial hemorrhage and poor outcome in patients with acute ischemic stroke treated with mechanical thrombectomy. METHODS We analyzed patients with anterior circulation stroke treated with mechanical thrombectomy and identified BBB disruption on the noncontrast CT images immediately after endovascular treatment. Follow-up CT or magnetic resonance imaging scan was performed at 24 hours to assess intracranial hemorrhage. We dichotomized patients into those with moderate BBB disruption versus those with minor BBB disruption and no BBB disruption. We evaluated the association of moderate BBB disruption after mechanical thrombectomy with intracranial hemorrhage and clinical outcomes. RESULTS Moderate BBB disruption after mechanical thrombectomy was found in 56 of 210 patients (26.7%). Moderate BBB disruption was independently associated with higher rates of hemorrhagic transformation (OR 25.33; 95% CI 9.93-64.65; P < .001), parenchymal hematoma (OR 20.57; 95% CI 5.64-74.99; P < .001), and poor outcome at discharge (OR 2.35; 95% CI 1.09-5.07; P = .03). The association of BBB disruption with intracranial hemorrhage remained in patients with successful reperfusion after mechanical thrombectomy. The location of BBB disruption was not associated with intracranial hemorrhage and poor outcome. CONCLUSIONS Moderate BBB disruption is common after mechanical thrombectomy in a quarter of patients with acute ischemic stroke and increases the risk of intracranial hemorrhage and poor outcome.
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Affiliation(s)
- Zhong-Song Shi
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Province Key Laboratory of Brain Function and Disease, Sun Yat-sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Gary R Duckwiler
- Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Reza Jahan
- Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Satoshi Tateshima
- Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Viktor Szeder
- Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Jeffrey L Saver
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Doojin Kim
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Latisha K Sharma
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Paul M Vespa
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Noriko Salamon
- Division of Diagnostic Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - J Pablo Villablanca
- Division of Diagnostic Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Fernando Viñuela
- Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Lei Feng
- Department of Neuroradiology, Kaiser Permanente Medical Center, Los Angeles, CA
| | - Yince Loh
- Interventional Neuroradiology and Neurocritical Care Services, Madigan Army Medical Center, Tacoma, WA
| | - David S Liebeskind
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA.,Neurovascular Imaging Research Core, David Geffen School of Medicine at UCLA, Los Angeles, CA
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17
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Chen H, Guan B, Chen X, Chen X, Li C, Qiu J, Yang D, Liu KJ, Qi S, Shen J. Baicalin Attenuates Blood-Brain Barrier Disruption and Hemorrhagic Transformation and Improves Neurological Outcome in Ischemic Stroke Rats with Delayed t-PA Treatment: Involvement of ONOO --MMP-9 Pathway. Transl Stroke Res 2017; 9:515-529. [PMID: 29275501 DOI: 10.1007/s12975-017-0598-3] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 10/18/2022]
Abstract
Tissue plasminogen activator (t-PA) has a restrictive therapeutic window within 4.5 h after ischemic stroke with the risk of hemorrhagic transformation (HT) and neurotoxicity when it is used beyond the time window. In the present study, we tested the hypothesis that baicalin, an active compound of medicinal plant, could attenuate HT in cerebral ischemia stroke with delayed t-PA treatment. Male Sprague-Dawley rats were subjected to middle cerebral artery occlusion (MCAO) for 4.5 h and then continuously received t-PA infusion (10 mg/kg) for 0.5 h and followed by 19-h reperfusion. Baicalin (50, 100, 150 mg/kg) was administrated via femoral vein at 4.5 h after MCAO cerebral ischemia. Delayed t-PA infusion significantly increased the mortality rate, induced HT, blood-brain barrier (BBB) damage, and apoptotic cell death in the ischemic brains and exacerbated neurological outcomes in cerebral ischemia-reperfusion rats at 24 h after MCAO cerebral ischemia. Co-treatment of baicalin significantly reduced the mortality rates, ameliorated the t-PA-mediated BBB disruption and HT. Furthermore, baicalin showed to directly scavenge peroxynitrite and inhibit MMP-9 expression and activity in the ischemic brains with the delayed t-PA treatment. Baicalin had no effect on the t-PA fibrinolytic function indicated by t-PA activity assay. Taken together, baicalin could attenuate t-PA-mediated HT and improve the outcomes of ischemic stroke treatment possibly via inhibiting peroxynitrite-mediated MMP-9 activation.
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Affiliation(s)
- Hansen Chen
- School of Chinese Medicine, The University of Hong Kong, Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China.,The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Hong Kong SAR, China
| | - Binghe Guan
- School of Chinese Medicine, The University of Hong Kong, Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China.,The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Hong Kong SAR, China
| | - Xi Chen
- Department of Core Facility, The People's Hospital of Bao-an Shenzhen, Shenzhen Shi, China.,The 8th People's Hospital of Shenzhen, The Affiliated Bao-an Hospital of Southern Medical University, Shenzhen, 518000, China
| | - Xingmiao Chen
- School of Chinese Medicine, The University of Hong Kong, Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China.,The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Hong Kong SAR, China
| | - Caiming Li
- Department of Neurology, Huizhou First Hospital, Huizhou, Guangdong Province, China
| | - Jinhua Qiu
- Department of Neurology, Huizhou First Hospital, Huizhou, Guangdong Province, China
| | - Dan Yang
- Morningside Laboratory for Chemical Biology and Department of Chemistry, The University of Hong Kong, Hong Kong SAR, China
| | - Ke Jian Liu
- Department of Pharmaceutical Sciences, College of Pharmacy, The University of New Mexico, Albuquerque, NM, 87131, USA
| | - Suhua Qi
- Research Center for Biochemistry and Molecular Biology and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, 221000, People's Republic of China.
| | - Jiangang Shen
- School of Chinese Medicine, The University of Hong Kong, Sassoon Road, Pokfulam, Hong Kong SAR, People's Republic of China. .,The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Hong Kong SAR, China.
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18
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Yang B, Li W, Satani N, Nghiem DM, Xi X, Aronowski J, Savitz SI. Protective Effects of Autologous Bone Marrow Mononuclear Cells After Administering t-PA in an Embolic Stroke Model. Transl Stroke Res 2017; 9:135-145. [PMID: 28836238 DOI: 10.1007/s12975-017-0563-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 10/19/2022]
Abstract
Tissue plasminogen activator (t-PA) is the only FDA-approved drug for acute ischemic stroke but poses risk for hemorrhagic transformation (HT). Cell therapy has been investigated as a potential therapy to improve recovery after stroke by the modulation of inflammatory responses and the improvement of blood-brain barrier (BBB) integrity, both of which are associated with HT after t-PA. In our present study, we studied the effect of autologous bone marrow mononuclear cells (MNCs) in an embolic stroke model. We administered MNCs in a rat embolic stroke 2 h after administering t-PA. We observed that even though autologous MNCs did not alter the incidence of HT, they decreased the severity of HT and reduced BBB permeability. One possible mechanism could be through the inhibition of MMP3 released by astrocytes via JAK/STAT pathway as shown by our in vitro cell interaction studies.
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Affiliation(s)
- Bing Yang
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA.
| | - Weilang Li
- Department of Neurology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Nikunj Satani
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA
| | - Duyen M Nghiem
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA
| | - XiaoPei Xi
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA
| | - Jaroslaw Aronowski
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA
| | - Sean I Savitz
- Institute for Stroke and Cerebrovascular Disease and Department of Neurology, McGovern Medical School, University of Texas Health Science Center (UTHealth) at Houston, Houston, 77030, TX, USA
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19
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Sang H, Qiu Z, Cai J, Lan W, Yu L, Zhang H, Li M, Xie Y, Guo R, Ye R, Liu X, Liu L, Zhang R. Early Increased Bradykinin 1 Receptor Contributes to Hemorrhagic Transformation After Ischemic Stroke in Type 1 Diabetic Rats. Transl Stroke Res 2017; 8:597-611. [DOI: 10.1007/s12975-017-0552-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 06/27/2017] [Accepted: 06/29/2017] [Indexed: 12/26/2022]
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20
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Argibay B, Trekker J, Himmelreich U, Beiras A, Topete A, Taboada P, Pérez-Mato M, Vieites-Prado A, Iglesias-Rey R, Rivas J, Planas AM, Sobrino T, Castillo J, Campos F. Intraarterial route increases the risk of cerebral lesions after mesenchymal cell administration in animal model of ischemia. Sci Rep 2017; 7:40758. [PMID: 28091591 PMCID: PMC5238501 DOI: 10.1038/srep40758] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 12/09/2016] [Indexed: 02/08/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are a promising clinical therapy for ischemic stroke. However, critical parameters, such as the most effective administration route, remain unclear. Intravenous (i.v.) and intraarterial (i.a.) delivery routes have yielded varied outcomes across studies, potentially due to the unknown MSCs distribution. We investigated whether MSCs reached the brain following i.a. or i.v. administration after transient cerebral ischemia in rats, and evaluated the therapeutic effects of both routes. MSCs were labeled with dextran-coated superparamagnetic nanoparticles for magnetic resonance imaging (MRI) cell tracking, transmission electron microscopy and immunohistological analysis. MSCs were found in the brain following i.a. but not i.v. administration. However, the i.a. route increased the risk of cerebral lesions and did not improve functional recovery. The i.v. delivery is safe but MCS do not reach the brain tissue, implying that treatment benefits observed for this route are not attributable to brain MCS engrafting after stroke.
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Affiliation(s)
- Bárbara Argibay
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Jesse Trekker
- IMEC, Department of Life Science Technology, Leuven 3001, Belgium.,Biomedical MRI, Department of Imaging and Pathology, KU Leuven, Leuven 3000, Belgium
| | - Uwe Himmelreich
- Biomedical MRI, Department of Imaging and Pathology, KU Leuven, Leuven 3000, Belgium
| | - Andrés Beiras
- Department of Morphological Sciences, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Antonio Topete
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.,Departamento de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara 44340, México
| | - Pablo Taboada
- Grupo de Física de Coloides y Polímeros, Departamento de Física de la Materia Condensada, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - María Pérez-Mato
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Alba Vieites-Prado
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Ramón Iglesias-Rey
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - José Rivas
- Applied Physics Department, Campus Vida, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Anna M Planas
- Department of Brain Ischemia and Neurodegeneration, Institut d' Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC), Barcelona, Spain.,August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Barcelona, Spain
| | - Tomás Sobrino
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - José Castillo
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Francisco Campos
- Clinical Neurosciences Research Laboratory, Clinical University Hospital, Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
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Chen HS, Qi SH, Shen JG. One-Compound-Multi-Target: Combination Prospect of Natural Compounds with Thrombolytic Therapy in Acute Ischemic Stroke. Curr Neuropharmacol 2017; 15:134-156. [PMID: 27334020 PMCID: PMC5327453 DOI: 10.2174/1570159x14666160620102055] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 04/21/2016] [Accepted: 06/15/2016] [Indexed: 12/11/2022] Open
Abstract
Tissue plasminogen activator (t-PA) is the only FDA-approved drug for acute ischemic stroke treatment, but its clinical use is limited due to the narrow therapeutic time window and severe adverse effects, including hemorrhagic transformation (HT) and neurotoxicity. One of the potential resolutions is to use adjunct therapies to reduce the side effects and extend t-PA's therapeutic time window. However, therapies modulating single target seem not to be satisfied, and a multitarget strategy is warranted to resolve such complex disease. Recently, large amount of efforts have been made to explore the active compounds from herbal supplements to treat ischemic stroke. Some natural compounds revealed both neuro- and bloodbrain- barrier (BBB)-protective effects by concurrently targeting multiple cellular signaling pathways in cerebral ischemia-reperfusion injury. Thus, those compounds are potential to be one-drug-multi-target agents as combined therapy with t-PA for ischemic stroke. In this review article, we summarize current progress about molecular targets involving in t-PA-mediated HT and neurotoxicity in ischemic brain injury. Based on these targets, we select 23 promising compounds from currently available literature with the bioactivities simultaneously targeting several important molecular targets. We propose that those compounds merit further investigation as combined therapy with t-PA. Finally, we discuss the potential drawbacks of the natural compounds' studies and raise several important issues to be addressed in the future for the development of natural compound as an adjunct therapy.
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Affiliation(s)
- Han-Sen Chen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong S.A.R, P. R China
- The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), China
| | - Su-Hua Qi
- Research Center for Biochemistry and Molecular Biology and Provincial Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou, China
| | - Jian-Gang Shen
- School of Chinese Medicine, The University of Hong Kong, Hong Kong S.A.R, P. R China
- The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), China
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22
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Chen H, Guan B, Shen J. Targeting ONOO -/HMGB1/MMP-9 Signaling Cascades: Potential for Drug Development from Chinese Medicine to Attenuate Ischemic Brain Injury and Hemorrhagic Transformation Induced by Thrombolytic Treatment. ACTA ACUST UNITED AC 2016. [DOI: 10.1159/000442468] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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McBride DW, Legrand J, Krafft PR, Flores J, Klebe D, Tang J, Zhang JH. Acute Hyperglycemia Is Associated with Immediate Brain Swelling and Hemorrhagic Transformation After Middle Cerebral Artery Occlusion in Rats. ACTA NEUROCHIRURGICA. SUPPLEMENT 2016; 121:237-41. [PMID: 26463955 DOI: 10.1007/978-3-319-18497-5_42] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Hemorrhagic transformation occurs in as many as 48 % of stroke patients and is a major contributor to post-insult morbidity and mortality. Experimental models of hemorrhagic transformation are utilized for understanding the mechanisms behind its development, as well as for investigating potential therapeutics for prevention and reduction of bleeding. Thoroughly studying animal models of hemorrhagic transformation is critically important for testing novel treatments. Thus far, no study has examined the progression of brain swelling and hemorrhagic transformation after transient middle cerebral artery occlusion (MCAO). Herein, we investigate the development of infarction, brain swelling, and hemorrhagic transformation following MCAO in hyperglycemic rats. Twenty-five Sprague-Dawley rats were subjected to either 1.5 h of MCAO or sham surgery 15 min after induction of hyperglycemia. Animals were sacrificed at 0.25, 1, 3, or 24 h after reperfusion for measurement of infarct volume, brain swelling, and hemoglobin volume. Within 15 min of reperfusion, the infarct volume was significantly larger than in sham animals and did not increase in size over the 24 h. However, both brain swelling and hemorrhagic transformation, which began immediately after reperfusion, increase over 24 h after reperfusion.
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Affiliation(s)
- Devin W McBride
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Julia Legrand
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Paul R Krafft
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Jerry Flores
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Damon Klebe
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, 92350, USA. .,Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, USA.
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24
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Acute Hyperglycemia Does Not Affect Brain Swelling or Infarction Volume After Middle Cerebral Artery Occlusion in Rats. ACTA NEUROCHIRURGICA. SUPPLEMENT 2016; 121:251-5. [PMID: 26463957 DOI: 10.1007/978-3-319-18497-5_44] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Stroke disproportionally affects diabetic and hyperglycemic patients with increased incidence and is associated with higher morbidity and mortality due to brain swelling. In this study, the intraluminal suture middle cerebral artery occlusion (MCAO) model was used to examine the effects of blood glucose on brain swelling and infarct volume in acutely hyperglycemic rats and normo-glycemic controls. Fifty-four rats were distributed into normo-glycemic sham surgery, hyperglycemic sham surgery, normo-glycemic MCAO, and hyperglycemic MCAO. To induce hyperglycemia, 15 min before MCAO surgery, animals were injected with 50 % dextrose. Animals were subjected to 90 min of MCAO and sacrificed 24 h after reperfusion for hemispheric brain swelling and infarct volume calculations using standard equations. While normo-glycemic and hyperglycemic animals after MCAO presented with significantly higher brain swelling and larger infarcts than their respective controls, no statistical difference was observed for either brain swelling or infarct volume between normo-glycemic shams and hyperglycemic shams or normo-glycemic MCAO animals and hyperglycemic MCAO animals. The findings of this study suggest that blood glucose does not have any significant effect on hemispheric brain swelling or infarct volume after MCAO in rats.
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25
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Lapchak PA. A cost-effective rabbit embolic stroke bioassay: insight into the development of acute ischemic stroke therapy. Transl Stroke Res 2015; 6:99-103. [PMID: 25637174 PMCID: PMC4359071 DOI: 10.1007/s12975-015-0386-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Accepted: 01/06/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Paul A Lapchak
- Departments of Neurology and Neurosurgery, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion Suite 8305, 127 S. San Vicente Blvd., Los Angeles, CA, 90048, USA,
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26
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Sun J, Wei ZZ, Gu X, Zhang JY, Zhang Y, Li J, Wei L. Intranasal delivery of hypoxia-preconditioned bone marrow-derived mesenchymal stem cells enhanced regenerative effects after intracerebral hemorrhagic stroke in mice. Exp Neurol 2015; 272:78-87. [PMID: 25797577 DOI: 10.1016/j.expneurol.2015.03.011] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/10/2015] [Accepted: 03/13/2015] [Indexed: 12/11/2022]
Abstract
Intracerebral hemorrhagic stroke (ICH) causes high mortality and morbidity with very limited treatment options. Cell-based therapy has emerged as a novel approach to replace damaged brain tissues and promote regenerative processes. In this study we tested the hypothesis that intranasally delivered hypoxia-preconditioned BMSCs could reach the brain, promote tissue repair and improve functional recovery after ICH. Hemorrhagic stroke was induced in adult C57/B6 mice by injection of collagenase IV into the striatum. Animals were randomly divided into three groups: sham group, intranasal BMSC treatment group, and vehicle treatment group. BMSCs were pre-treated with hypoxic preconditioning (HP) and pre-labeled with Hoechst before transplantation. Behavior tests, including the mNSS score, rotarod test, adhesive removal test, and locomotor function evaluation were performed at varying days, up to 21days, after ICH to evaluate the therapeutic effects of BMSC transplantation. Western blots and immunohistochemistry were performed to analyze the neurotrophic effects. Intranasally delivered HP-BMSCs were identified in peri-injury regions. NeuN+/BrdU+ co-labeled cells were markedly increased around the hematoma region, and growth factors, including BDNF, GDNF, and VEGF were significantly upregulated in the ICH brain after BMSC treatment. The BMSC treatment group showed significant improvement in behavioral performance compared with the vehicle group. Our data also showed that intranasally delivered HP-BMSCs migrated to peri-injury regions and provided growth factors to increase neurogenesis after ICH. We conclude that intranasal administration of BMSC is an effective treatment for ICH, and that it enhanced neuroregenerative effects and promoted neurological functional recovery after ICH. Overall, the investigation supports the potential therapeutic strategy for BMSC transplantation therapy against hemorrhagic stroke.
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Affiliation(s)
- Jinmei Sun
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Laboratories of Stem Cell Biology and Neural Regeneration and Function Recovery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Zheng Zachory Wei
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Laboratories of Stem Cell Biology and Neural Regeneration and Function Recovery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Xiaohuan Gu
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - James Ya Zhang
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Yongbo Zhang
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Laboratories of Stem Cell Biology and Neural Regeneration and Function Recovery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Jimei Li
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Laboratories of Stem Cell Biology and Neural Regeneration and Function Recovery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.
| | - Ling Wei
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Laboratories of Stem Cell Biology and Neural Regeneration and Function Recovery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; Department of Anesthesiology, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA.
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27
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Bian H, Hu Q, Liang X, Chen D, Li B, Tang J, Zhang JH. Hyperbaric oxygen preconditioning attenuates hemorrhagic transformation through increasing PPARγ in hyperglycemic MCAO rats. Exp Neurol 2014; 265:22-9. [PMID: 25542160 DOI: 10.1016/j.expneurol.2014.12.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 12/09/2014] [Accepted: 12/16/2014] [Indexed: 12/31/2022]
Abstract
Hyperbaric oxygen preconditioning (HBO-PC) has been demonstrated to attenuate hemorrhagic transformation (HT) after middle cerebral artery occlusion (MCAO) in hyperglycemic rats. However, the mechanisms remain to be illustrated. Recently, HBO-PC has been shown to activate peroxisome proliferator-activated receptor-gamma (PPARγ) by increasing 15d-PGJ2 in primary cultured neurons. We hypothesize that HBO-PC reduces HT by suppressing inflammation through increasing 15d-PGJ2 and activating PPARγ in hyperglycemic MCAO rats. HBO (2.5ATA) was administered for 1h daily for 5 consecutive days. The PPARγ inhibitor GW9662 was administered intraperitoneally to designated animals. Infarction volume, hemorrhage volume, neurological scores and mortality were analyzed. The levels of 15d-PGJ2, PPARγ, TNF-α and IL-1β, tight junction proteins as well as the activity of MMP-2 and MMP-9 were evaluated 24h after MCAO. HBO-PC reduced HT, improved neurological function, down-regulated inflammatory molecules and inhibited the activation of MMP-9 by increasing 15d-PGJ2 and PPARγ at 24h after MCAO. The results suggested that HBO-PC might be an alternative measure to decrease HT in ischemic stroke.
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Affiliation(s)
- Hetao Bian
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA; Department of Neurology, Jining First People's Hospital, Jining, Shandong, China
| | - Qin Hu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Xiping Liang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Di Chen
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Bo Li
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA, USA.
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28
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Wang Y, Jia J, Ao G, Hu L, Liu H, Xiao Y, Du H, Alkayed NJ, Liu CF, Cheng J. Hydrogen sulfide protects blood-brain barrier integrity following cerebral ischemia. J Neurochem 2014; 129:827-38. [DOI: 10.1111/jnc.12695] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 02/13/2014] [Accepted: 02/18/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Yali Wang
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
- The Second Affiliated Hospital of Soochow University; Suzhou Jiangsu China
| | - Jia Jia
- College of Pharmaceutical Science; Soochow University; Suzhou Jiangsu China
| | - Guizhen Ao
- College of Pharmaceutical Science; Soochow University; Suzhou Jiangsu China
| | - Lifang Hu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
| | - Hui Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
| | - Yunqi Xiao
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
| | - Huaping Du
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
| | - Nabil J. Alkayed
- Department of Anesthesiology & Peri-Operative Medicine; Oregon Health & Science University; Portland Oregon USA
| | - Chun-Feng Liu
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
- The Second Affiliated Hospital of Soochow University; Suzhou Jiangsu China
| | - Jian Cheng
- Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases and Institute of Neuroscience; Soochow University; Suzhou Jiangsu China
- The Second Affiliated Hospital of Soochow University; Suzhou Jiangsu China
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29
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Hemorrhagic transformation after ischemic stroke in animals and humans. J Cereb Blood Flow Metab 2014; 34:185-99. [PMID: 24281743 PMCID: PMC3915212 DOI: 10.1038/jcbfm.2013.203] [Citation(s) in RCA: 384] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 10/10/2013] [Accepted: 10/28/2013] [Indexed: 01/12/2023]
Abstract
Hemorrhagic transformation (HT) is a common complication of ischemic stroke that is exacerbated by thrombolytic therapy. Methods to better prevent, predict, and treat HT are needed. In this review, we summarize studies of HT in both animals and humans. We propose that early HT (<18 to 24 hours after stroke onset) relates to leukocyte-derived matrix metalloproteinase-9 (MMP-9) and brain-derived MMP-2 that damage the neurovascular unit and promote blood-brain barrier (BBB) disruption. This contrasts to delayed HT (>18 to 24 hours after stroke) that relates to ischemia activation of brain proteases (MMP-2, MMP-3, MMP-9, and endogenous tissue plasminogen activator), neuroinflammation, and factors that promote vascular remodeling (vascular endothelial growth factor and high-moblity-group-box-1). Processes that mediate BBB repair and reduce HT risk are discussed, including transforming growth factor beta signaling in monocytes, Src kinase signaling, MMP inhibitors, and inhibitors of reactive oxygen species. Finally, clinical features associated with HT in patients with stroke are reviewed, including approaches to predict HT by clinical factors, brain imaging, and blood biomarkers. Though remarkable advances in our understanding of HT have been made, additional efforts are needed to translate these discoveries to the clinic and reduce the impact of HT on patients with ischemic stroke.
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30
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Lapchak PA. Fast neuroprotection (fast-NPRX) for acute ischemic stroke victims: the time for treatment is now. Transl Stroke Res 2013; 4:704-9. [PMID: 24323424 DOI: 10.1007/s12975-013-0303-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 01/25/2023]
Affiliation(s)
- Paul A Lapchak
- Department of Neurology and Neurosurgery, Cedars-Sinai Medical Center, Advanced Health Sciences Pavilion, Rm 8305, 127 S. San Vicente Blvd, Los Angeles, CA, 90048, USA,
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