6,829 results match your criteria Reperfusion Injury in Stroke

Shexiang Baoxin Pill, a Proprietary Multi-Constituent Chinese Medicine, Prevents Locomotor and Cognitive Impairment Caused by Brain Ischemia and Reperfusion Injury in Rats: A Potential Therapy for Neuropsychiatric Sequelae of Stroke.

Front Pharmacol 2021 27;12:665456. Epub 2021 Apr 27.

School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China.

Ischemic stroke is a common type of cerebrovascular event and also the leading cause of disability. Post-stroke cognitive impairment occurs frequently in stroke survivors. Shexiang Baoxin Pill (SBP) is a proprietary Chinese medicine, initially used to treat cardiovascular diseases. Read More

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Daytime Variation of Clinical Outcome in Cardiac Surgery: A Propensity-Matched Cohort Study.

J Cardiothorac Vasc Anesth 2021 Apr 3. Epub 2021 Apr 3.

Faculty of medicine, University of Montreal, Canada; Department of Cardiac Surgery, CHUM, Université de Montréal, Montréal, Canada.

Objective: The purpose of the present study was to investigate the hypothesis of a nychthemeral variation in the tolerance to ischemia and reperfusion injury in adult cardiac surgeries.

Design: Retrospective cohort study.

Setting: A single academic center. Read More

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The Mitochondrial mitoNEET Ligand NL-1 Is Protective in a Murine Model of Transient Cerebral Ischemic Stroke.

Pharm Res 2021 May 12. Epub 2021 May 12.

Department of Pharmaceutical Sciences, School of Pharmacy, West Virginia University, 1 Medical Center Drive, Morgantown, West Virginia, 26506, USA.

Purpose: Therapeutic strategies to treat ischemic stroke are limited due to the heterogeneity of cerebral ischemic injury and the mechanisms that contribute to the cell death. Since oxidative stress is one of the primary mechanisms that cause brain injury post-stroke, we hypothesized that therapeutic targets that modulate mitochondrial function could protect against reperfusion-injury after cerebral ischemia, with the focus here on a mitochondrial protein, mitoNEET, that modulates cellular bioenergetics.

Method: In this study, we evaluated the pharmacology of the mitoNEET ligand NL-1 in an in vivo therapeutic role for NL-1 in a C57Bl/6 murine model of ischemic stroke. Read More

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H3K27 demethylase KDM6B aggravates ischemic brain injury through demethylation of IRF4 and Notch2-dependent SOX9 activation.

Mol Ther Nucleic Acids 2021 Jun 26;24:622-633. Epub 2021 Jan 26.

Department of Neurosurgery, North China University of Science and Technology Affiliated Hospital, Tangshan 063000, P.R. China.

Lysine demethylase 6B (KDM6B) is a histone H3 lysine 27 (H3K27) demethylase that serves as a key mediator of gene transcription. Although KDM6B has been reported to modulate neuroinflammation after ischemic stroke, its role in ischemic brain injury is yet to be well elucidated. Therefore, this study aimed to thoroughly demonstrate the molecular mechanism underlying the effect of KDM6B on neurological function and astrocyte response in post-ischemic brain injury. Read More

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Intra-Coronary Administration of Tacrolimus Improves Myocardial Perfusion and Left Ventricular Function in Patients with ST-Segment Elevation Myocardial Infarction (COAT-STEMI) Undergoing Primary Percutaneous Coronary Intervention.

Acta Cardiol Sin 2021 May;37(3):239-253

Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine.

Background: Ischemia-reperfusion injury following acute ST-segment elevation myocardial infarction (STEMI) is strongly related to inflammation. However, whether intracoronary (IC) tacrolimus, an immunosuppressant, can improve myocardial perfusion is uncertain.

Methods: A multicenter double-blind randomized controlled trial was conducted in Taiwan from 2014 to 2017. Read More

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Dynamic changes in Beclin-1, LC3B and p62 at various time points in mice with temporary middle cerebral artery occlusion and reperfusion (tMCAO).

Brain Res Bull 2021 May 8. Epub 2021 May 8.

School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, PR China. Electronic address:

Ischaemic stroke is attributable to cerebrovascular disease and is associated with high morbidity, disability, mortality and recurrence. Autophagy is a critical mediator and plays dual roles in ischaemic stroke. Autophagy can protect against ischaemic brain injury during the early stage of ischaemic stroke, while excessive autophagy can induce apoptosis and exacerbate brain injury. Read More

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Upregulation of miR-20b Protects Against Cerebral Ischemic Stroke by Targeting Thioredoxin Interacting Protein (TXNIP).

Exp Neurobiol 2021 Apr;30(2):170-182

Department of Neurology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, PR. China.

Dysregulation of microRNAs (miRNAs) is involved in abnormal development and pathophysiology in the brain. Although miR-20b plays essential roles in various human diseases, its function in cerebral ischemic stroke remains unclear. A cell model of oxygen glucose deprivation/reoxygenation (OGD/R) and A rat model of middle cerebral artery occlusion/reperfusion (MCAO/R) were constructed. Read More

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Immunosuppression and Neuroinflammation in Stroke Pathobiology.

Exp Neurobiol 2021 Apr;30(2):101-112

Department of Neurosurgery, Wayne State University School of Medicine, Detroit 48201, MI, USA.

Over the preceding decades, there have been substantial advances in our knowledge of the pathophysiology of stroke. One such advance has been an increased understanding of the multifarious crosstalk in which the nervous and immune systems engage in order to maintain homeostasis. By interrupting the immune-nervous nexus, it is thought that stroke induces change in both systems. Read More

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Mild hypothermia facilitates mitochondrial transfer from astrocytes to injured neurons during oxygen-glucose deprivation/reoxygenation.

Neurosci Lett 2021 May 7:135940. Epub 2021 May 7.

Department of Anesthesiology, Second Hospital of Hebei Medical University, Shijiazhuang, 050000, Hebei, China. Electronic address:

Mitochondrial dysfunction is now considered an important sign of neuronal death during cerebral ischemia/reperfusion (I/R) injury. Studies have shown that the transfer of mitochondria from astrocytes to injured neurons contributes to endogenous neuroprotection after stroke. Basic and clinical studies have shown that mild hypothermia exerts a clear protective effect on neurons after cerebral ischemic injury, but the role of mild hypothermia in this endogenous neuroprotective mechanism remains unclear. Read More

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Withania coagulans extract attenuates oxidative stress-mediated apoptosis of cerebellar purkinje neurons after ischemia/reperfusion injury.

Metab Brain Dis 2021 May 10. Epub 2021 May 10.

Department of Anatomy, School of Medicine, Iran University of Medical Sciences, Tehran, IR, Iran.

Cerebral ischemia/reperfusion (I/R) is known to increase reactive oxygen species (ROS) generation, consequences of oxidative stress (OS), and neuronal death in the susceptible brain areas including the cerebellum. Newly, remarkable attention has been paid to a natural diet with the capability to scavenge ROS. Withania coagulans root extract (WCE) is rich in components with antioxidants properties. Read More

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Enhanced expression of P2X4 purinoceptors in pyramidal neurons of the rat hippocampal CA1 region may be involved ischemia-reperfusion injury.

Purinergic Signal 2021 May 9. Epub 2021 May 9.

Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, 200003, China.

Ischemic stroke is the most serious disease that harms human beings. In principle, its treatment is to restore blood flow supply as soon as possible. However, after the blood flow is restored, it will lead to secondary brain injury, that is, ischemia-reperfusion injury. Read More

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Impact of Early Blood Pressure Lowering in Patients Presenting with Acute Ischemic Stroke.

Curr Cardiol Rep 2021 May 7;23(6):63. Epub 2021 May 7.

Department of Neurology, Texas Tech University Health Sciences Center El Paso, El Paso, TX, USA.

Purpose Of Review: In this review article we will discuss the acute hypertensive response in the context of acute ischemic stroke and present the latest evidence-based concepts of the significance and management of the hemodynamic response in acute ischemic stroke.

Recent Findings: Acute hypertensive response is considered a common hemodynamic physiologic response in the early setting of an acute ischemic stroke. The significance of the acute hypertensive response is not entirely well understood. Read More

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Could the Gut Microbiota Serve as a Therapeutic Target in Ischemic Stroke?

Evid Based Complement Alternat Med 2021 17;2021:1391384. Epub 2021 Apr 17.

Rehabilitation Center, Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, 411 Guogeli Street, Nangang District, Harbin 150001, Heilongjiang, China.

The brain-gut axis is a relatively recent discovery of a two-way regulation system between the gut and brain, suggesting that the gut microbiota may be a promising targeted prevention and treatment strategy for patients with a high risk of acute cerebral ischemia/reperfusion injury. There are many risk factors for ischemic stroke, and many studies have shown that the gut microbiota affects the absorption and metabolism of the body, as well as the risk factors of stroke, such as blood pressure, blood glucose, blood lipids, and atherosclerosis, either directly or indirectly. Furthermore, the gut microbiota can affect the occurrence and prognosis of ischemic stroke by regulating risk factors or immune responses. Read More

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Neuroprotective effect of stroke pretreated MSCs against cerebral ischemia/reperfusion injury in rats.

World Neurosurg 2021 May 3. Epub 2021 May 3.

Department of General Medicine, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China. Electronic address:

Background: Mesenchymal stem cells (MSCs) have been shown to enhance neurological recovery after stroke. In this study, a middle cerebral artery occlusion (MCAO) rat model was designed to assess the neuroprotective effects of stroke pretreated MSCs on cerebral ischemia/reperfusion (I/R) injury.

Method: The MSCs were isolated and cultured in medium with 10% FBS, normal control serum (NS), or stroke serum (SS). Read More

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Mechanisms of neuronal cell death in ischemic stroke and their therapeutic implications.

Med Res Rev 2021 May 6. Epub 2021 May 6.

Department of Neurology and State Key Laboratory of Biotherapy, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.

Ischemic stroke caused by arterial occlusion is the most common type of stroke, which is among the most frequent causes of disability and death worldwide. Current treatment approaches involve achieving rapid reperfusion either pharmacologically or surgically, both of which are time-sensitive; moreover, blood flow recanalization often causes ischemia/reperfusion injury. However, even though neuroprotective intervention is urgently needed in the event of stroke, the exact mechanisms of neuronal death during ischemic stroke are still unclear, and consequently, the capacity for drug development has remained limited. Read More

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Precision Medicine Considerations for the Management of Heart Disease and Stroke in East Asians.

Cardiol Plus 2020 Jul-Sep;5(3):101-108. Epub 2020 Sep 30.

Department of Anesthesiology, Perioperative and Pain Medicine, School of Medicine, Stanford University, Stanford, California, USA.

Heart disease is the leading cause of death in Asian Americans. Importantly, people of East Asian descent are more likely to carry a loss-of-function point mutation in aldehyde dehydrogenase 2 (ALDH2), ALDH2*2, which reduces ALDH2 enzymatic activity by at least 40% relative to wild type ALDH2. Given the role of ALDH2 in removing toxic aldehydes from the cell, ALDH2 is intimately involved in the cardioprotective mechanisms of ischemic preconditioning and the pathophysiology of ischemia reperfusion injury. Read More

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September 2020

Galectin-3 Mediated Inflammatory Response Contributes to Neurological Recovery by QiShenYiQi in Subacute Stroke Model.

Front Pharmacol 2021 19;12:588587. Epub 2021 Apr 19.

State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.

Effective therapies for stroke are still limited due to its complex pathological manifestations. QiShenYiQi (QSYQ), a component-based Chinese medicine capable of reducing organ injury caused by ischemia/reperfusion, may offer an alternative option for stroke treatment and post-stroke recovery. Recently, we reported a beneficial effect of QSYQ for acute stroke modulation of the neuroinflammatory response. Read More

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Mitochondrial ferritin attenuates cerebral ischaemia/reperfusion injury by inhibiting ferroptosis.

Cell Death Dis 2021 May 5;12(5):447. Epub 2021 May 5.

Laboratory of Molecular Iron Metabolism, Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, Ministry of Education Key Laboratory of Molecular and Cellular Biology, College of Life Science, Hebei Normal University, 050024, Shijiazhuang, Hebei Province, China.

Ischaemic stroke is becoming the most common cerebral disease in aging populations, but the underlying molecular mechanism of the disease has not yet been fully elucidated. Increasing evidence has indicated that an excess of iron contributes to brain damage in cerebral ischaemia/reperfusion (I/R) injury. Although mitochondrial ferritin (FtMt) plays a critical role in iron homeostasis, the molecular function of FtMt in I/R remains unknown. Read More

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Liposomal Encapsulated FSC231, a PICK1 Inhibitor, Prevents the Ischemia/Reperfusion-Induced Degradation of GluA2-Containing AMPA Receptors.

Pharmaceutics 2021 Apr 30;13(5). Epub 2021 Apr 30.

Department of Pharmaceutical Sciences, Washington State University Health Sciences, Spokane, WA 99202, USA.

Strokes remain one of the leading causes of disability within the United States. Despite an enormous amount of research effort within the scientific community, very few therapeutics are available for stroke patients. Cytotoxic accumulation of intracellular calcium is a well-studied phenomenon that occurs following ischemic stroke. Read More

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Eprosartan: A closer insight into its neuroprotective activity in rats with focal cerebral ischemia-reperfusion injury.

J Biochem Mol Toxicol 2021 May 3:e22796. Epub 2021 May 3.

Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Giza, Egypt.

Eprosartan (EPRO), an angiotensin receptor type-1 (AT-1) blocker, exhibited neuroprotective activities in ischemic stroke resulting from focal cerebral ischemia in rats. The current study aimed to clarify the neuroprotective role of EPRO in middle carotid artery occlusion (MCAO)-induced ischemic stroke in rats. Fifty-six male Wistar rats were divided into four groups (n = 14 per group): sham-operated group, sham receiving EPRO (60 mg/kg/day, po) group, ischemia-reperfusion (IR) group, and IR receiving EPRO (60 mg/kg/day, po) group. Read More

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Danggui-Shaoyao-San (DSS) Ameliorates Cerebral Ischemia-Reperfusion Injury via Activating SIRT1 Signaling and Inhibiting NADPH Oxidases.

Front Pharmacol 2021 15;12:653795. Epub 2021 Apr 15.

Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China.

Danggui-Shayao-San (DSS) is a famous Traditional Chinese Medicine formula that used for treating pain disorders and maintaining neurological health. Recent studies indicate that DSS has neuroprotective effects against ischemic brain damage but its underlining mechanisms remain unclear. Herein, we investigated the neuroprotective mechanisms of DSS for treating ischemic stroke. Read More

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Transcriptomic and Metabolomic Profiling Reveals the Protective Effect of (Rupr. & Maxim.) Harms Combined With Blume on Cerebral Ischemia-Reperfusion Injury.

Front Pharmacol 2021 16;12:619076. Epub 2021 Apr 16.

State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Nanchang, China.

The effects of current treatment strategies used in ischemic stroke are weakened by cerebral ischemia-reperfusion (CIR) injury. Suitable treatment regimens targeting CIR injury are still lacking. Two herbs, namely, (Rupr. Read More

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Nanoparticle Delivered Anti-miR-141-3p for Stroke Therapy.

Cells 2021 Apr 25;10(5). Epub 2021 Apr 25.

School of Pharmacy, University of Connecticut, Storrs, CT 06269, USA.

Ischemic stroke and factors modifying ischemic stroke responses, such as social isolation, contribute to long-term disability worldwide. Several studies demonstrated that the aberrant levels of microRNAs contribute to ischemic stroke injury. In prior studies, we established that miR-141-3p increases after ischemic stroke and post-stroke isolation. Read More

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Ischemia-Reperfusion under Hyperthermia Increases Heme Oxygenase-1 in Pyramidal Neurons and Astrocytes with Accelerating Neuronal Loss in Gerbil Hippocampus.

Int J Mol Sci 2021 Apr 12;22(8). Epub 2021 Apr 12.

Department of Biomedical Science and Research Institute for Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Gangwon, Korea.

It has been studied that the damage or death of neurons in the hippocampus is different according to hippocampal subregions, cornu ammonis 1-3 (CA1-3), after transient ischemia in the forebrain, showing that pyramidal neurons located in the subfield CA1 (CA1) are most vulnerable to this ischemia. Hyperthermia is a proven risk factor for brain ischemia and can develop more severe and extensive brain damage related with mortality rate. It is well known that heme oxygenase-1 (HO-1) activity and expression is increased by various stimuli in the brain, including hyperthermia. Read More

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Transdermal System Based on Solid Cilostazol Nanoparticles Attenuates Ischemia/Reperfusion-Induced Brain Injury in Mice.

Nanomaterials (Basel) 2021 Apr 15;11(4). Epub 2021 Apr 15.

Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan.

Cilostazol (CIL) exerted a protective effect by promoting blood-brain barrier integrity as well as improving the status of neurological dysfunctions following cerebral ischemia/reperfusion (I/R) injury. We attempted to design a 0.5% CIL carbopol gel using solid nanoparticles (CIL-Ngel), and then investigated the relationships between energy-dependent endocytosis and the skin penetration of CIL-Ngel in this study. Read More

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Neuroprotective Effect of a New Free Radical Scavenger HL-008 in an Ischemia-Reperfusion Injury Rat Model.

Neuroscience 2021 Apr 27;465:105-115. Epub 2021 Apr 27.

Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 238, Baidi Road, Tianjin, China. Electronic address:

Oxidative stress plays a critical role in cerebral ischemia-reperfusion injury. We have previously developed a powerful antioxidant, HL-008. This study aimed to investigate the neuroprotective function of HL-008. Read More

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Mechanical thrombectomy injury to the arterial wall: A comparison between catheter aspiration and stent retriever.

Eur J Radiol 2021 Apr 14;139:109723. Epub 2021 Apr 14.

Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road, Shanghai, 200233, China. Electronic address:

Purpose: To compare the extent of arterial wall damage when SR and CA were used for treatment of AIS models to evaluate their efficacy and safety.

Methods: A thrombin-induced thrombus was pre-injected into the right distal external carotid-maxillary artery (ECMA) in 12 dogs to create an acute thrombus occlusion model and were randomly divided into the SR group (n = 6; received SR treatment) and CA group (n = 6; received CA treatment). Device safety was also assessed by five passages through the normal left ECMA using each device. Read More

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Increased Relative Delta Bandpower and Delta Indices Revealed by Continuous qEEG Monitoring in a Rat Model of Ischemia-Reperfusion.

Front Neurol 2021 7;12:645138. Epub 2021 Apr 7.

Laboratory of Experimental Neuropathology, João de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil.

The present study describes the electroencephalographic changes that occur during cerebral ischemia and reperfusion in animals submitted to transient focal cerebral ischemia by middle cerebral artery occlusion (MCAO) for 30 min. For this, male Wistar rats were divided into two groups ( = 6 animals/group): (1) sham (control) group, and (2) ischemic/reperfusion group. The quantitative electroencephalography (qEEG) was recorded during the ischemic and immediate reperfusion (acute) phases, and then once a day for 7 days after the MCAO (subacute phase). Read More

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Aneurysmal Subarachnoid Hemorrhage.

Neurol Clin 2021 05 31;39(2):419-442. Epub 2021 Mar 31.

Department of Neurology, Boston University School of Medicine, Boston Medical Center, Boston, MA, USA; Department of Neurosurgery, Boston University School of Medicine, Boston Medical Center, Boston, MA, USA; Department of Radiology, Boston University School of Medicine, Boston Medical Center, Boston, MA, USA.

Aneurysmal subarachnoid hemorrhage is a neurologic emergency that requires immediate patient stabilization and prompt diagnosis and treatment. Early measures should focus on principles of advanced cardiovascular life support. The aneurysm should be evaluated and treated in a comprehensive stroke center by a multidisciplinary team capable of endovascular and, operative approaches. Read More

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Microglial lnc-U90926 facilitates neutrophil infiltration in ischemic stroke via MDH2/CXCL2 axis.

Mol Ther 2021 Apr 22. Epub 2021 Apr 22.

Department of Neurology, Drum Tower Hospital, Medical School and The State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu 210008, PR China; Institute of Brain Sciences, Nanjing University, Nanjing, Jiangsu 210093, PR China; Jiangsu Key Laboratory for Molecular Medicine, Medical School of Nanjing University, Nanjing, Jiangsu 210008, PR China; Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing, Jiangsu 210008, PR China; Nanjing Neurology Clinic Medical Center, Nanjing, Jiangsu 210008, PR China;. Electronic address:

Dysregulated long non-coding RNAs (lncRNAs) have been shown to contribute to the pathogenesis of ischemic stroke. However, the potential role of lncRNAs in post-stroke microglial activation remains largely unknown. Here, we uncovered that lncRNA-U90926 was significantly increased in microglia exposed to ischemia/reperfusion both in vivo and in vitro. Read More

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