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Glutamate Transport and Preterm Brain Injury
Silvia Pregnolato1*, Elavazhagan Chakkarapani1, Anthony R. Isles2 and Karen Luyt1 1Department of Neonatal Neurology, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom 2Behavioural Genetics Group, MRC Centre for Neuropsychiatric Genetics and Genomics, School of Medicine, Cardiff University, Cardiff, United Kingdom Preterm birth complications are the leading cause of child death worldwide and a top global health priority. Among the survivors, the risk of life-long disabilities is high, including cerebral palsy and impairment of movement, cognition, and beh...
Source: Frontiers in Physiology - April 23, 2019 Category: Physiology Source Type: research

The Effects of Intelectin-1 on Antioxidant and Angiogenesis in HUVECs Exposed to Oxygen Glucose Deprivation
Conclusion: These results suggest intelectin-1 promotes angiogenesis, inhibits oxidative stress and reduces apoptosis by stimulating the Akt-eNOS signaling pathway in response to ischemia in vitro. Introduction Stroke is a main reason of human neurological disability, ischemic stroke (IS) accounts for almost 80–90% of all strokes. IS occurs after a cerebral blood flow disruption, leading to cellular death and tissue damage by restricting glucose and oxygen supplies (1). Ischemic vascular diseases cause substantial vascular valve and vascular endothelial cell injuries, eventually damaging the surrounding tis...
Source: Frontiers in Neurology - April 15, 2019 Category: Neurology Source Type: research

Role of TREK-1 in Health and Disease, Focus on the Central Nervous System
Conclusion and Perspectives Since their cloning 20 years ago, the physiological importance of TREK-1 channels has continued to grow (Figure 3). Today, TREK-1 channels have been shown to be important and their presence is essential in a number of physiopathological processes. Their involvement in these different processes demonstrate the necessity to design pharmacological modulators, activators or inhibitors, of these channels to correct any TREK-1-related dysfunctions. Despites a number of studies and many molecule screenings, only few putative new drugs were identified. The activators belonging to the ML and BL series ...
Source: Frontiers in Pharmacology - April 10, 2019 Category: Drugs & Pharmacology Source Type: research

Effect of Inflammation on the Process of Stroke Rehabilitation and Poststroke Depression
Conclusions Stroke comprises ischemic stroke and ICH. The immuno-inflammatory process is involved in neural plasticity following events such as a hemorrhage or ischemic stroke. After ischemia, astrocytes, microglia, and MDMs play important roles during rehabilitation with the modulation of cytokines or chemokines, such as TNF-α and IL-1. Moreover, MiRNAs are also important posttranscriptional regulators in these glial mitochondrial responses to cerebral ischemia. ICH involves processes similar and different to those seen in ischemia, including neuronal injury, astrocytic and microglial/macrophage activation, and n...
Source: Frontiers in Psychiatry - April 10, 2019 Category: Psychiatry Source Type: research

Virtual histology-intravascular ultrasound as a diagnostic alternative for morphological characterization of carotid plaque: comparison with histology and high-resolution magnetic resonance findings
Conclusion We believe that VH-IVUS may be useful when a quick intraprocedural evaluation of a carotid plaque before or after stent placement is required, but is not suitable for the accurate in-vivo differentiation between stable and unstable plaques prone to rupture, due to the suboptimal assessment of the necrotic component, fibrous cap thickness and rupture signs. We do believe, however, that these results need further evaluation in larger populations to be confirmed.
Source: Journal of Cardiovascular Medicine - April 2, 2019 Category: Cardiology Tags: Research articles: Coronary artery disease Source Type: research

Calcium-dependent blood-brain barrier breakdown by NOX5 limits postreperfusion benefit in stroke
Ischemic stroke is a predominant cause of disability worldwide, with thrombolytic or mechanical removal of the occlusion being the only therapeutic option. Reperfusion bears the risk of an acute deleterious calcium-dependent breakdown of the blood-brain barrier. Its mechanism, however, is unknown. Here, we identified type 5 NADPH oxidase (NOX5), a calcium-activated, ROS-forming enzyme, as the missing link. Using a humanized knockin (KI) mouse model and in vitro organotypic cultures, we found that reoxygenation or calcium overload increased brain ROS levels in a NOX5-dependent manner. In vivo, postischemic ROS formation, in...
Source: Journal of Clinical Investigation - March 19, 2019 Category: Biomedical Science Authors: Ana I. Casas, Pamela W.M. Kleikers, Eva Geuss, Friederike Langhauser, Thure Adler, Dirk H. Busch, Valerie Gailus-Durner, Martin Hrabê de Angelis, Javier Egea, Manuela G. Lopez, Christoph Kleinschnitz, Harald H.H.W. Schmidt Source Type: research

Neuroprotective effect of grape seed extract on brain ischemia: a proteomic approach
AbstractStroke is one of the leading causes of long-lasting disability in human and oxidative stress an important underlying cause. Molecular insights into pathophysiology of ischemic stroke are still obscure, and the present study investigated the protective effect of high dosage Grape Seed Extract (GSE 2.5  g/kg) on brain ischemia-reperfusion (I/R) injury using a proteomic approach. Ischemia was realized by occlusion of the common carotid arteries for 30 min followed by 1 h reperfusion on control or GSE pre-treated rats, and a label-free quantification followed by mass spectrometry analysis used to evaluate I/R induce...
Source: Metabolic Brain Disease - February 22, 2019 Category: Neurology Source Type: research

Calcium antagonists for acute ischemic stroke.
CONCLUSIONS: We found no evidence to support the use of calcium antagonists in people with acute ischemic stroke. PMID: 30758052 [PubMed - as supplied by publisher]
Source: Cochrane Database of Systematic Reviews - February 13, 2019 Category: General Medicine Authors: Zhang J, Liu J, Li D, Zhang C, Liu M Tags: Cochrane Database Syst Rev Source Type: research

Podcast: Cerebrolysin for acute ischaemic stroke
When someone has an acute ischemic stroke, urgent and reliable treatments will reduce their risks of disability or dying from their brain tissue damage. The treatments used vary around the world, and a drug called cerebrolysin is widely used in post-Soviet countries, Eastern Europe, Central and Southeast Asia. In April 2017, the latest update of this review was published by researchers from Kazan Federal University in Russia and Chinara Razzakova, a PhD student from the university interviewed one of the authors, Liliya Eugenevna, for this podcast." This Cochrane Review is about a medicine called cerebrolysin, which is used...
Source: Cochrane News and Events - January 10, 2019 Category: Information Technology Authors: Lydia Parsonson Source Type: news

Neuroprotective potential of adenosine A1 receptor partial agonists in experimental models of cerebral ischemia
This article is protected by copyright. All rights reserved.
Source: Journal of Neurochemistry - January 7, 2019 Category: Neuroscience Authors: Alberto Martire, Catia Lambertucci, Rita Pepponi, Antonella Ferrante, Nicholas Benati, Michela Buccioni, Diego Dal Ben, Gabriella Marucci, Karl ‐Norbert Klotz, Rosaria Volpini, Patrizia Popoli Tags: Original Article Source Type: research

The role of calcium handling mechanisms in reperfusion injury.
Abstract Cardiovascular diseases, such as stroke and myocardial infarction (MI) remain the major cause of death and disability worldwide. However, the mortality of MI has declined dramatically over the past several decades because of advances in medicines (thrombolytic agents, antiplatelet drugs, beta blockers, and angiotensin converting enzyme inhibitors) and approaches to restore tissue perfusion(percutaneous coronary intervention and cardiopulmonary bypass). Animals studies have been shown that these treatments have been effective in reducing acute myocardial ischemic injury and limiting MI size. The paradox is...
Source: Current Pharmaceutical Design - November 20, 2018 Category: Drugs & Pharmacology Authors: Pittas K, Vrachatis DA, Angelidis C, Tsoucala S, Giannopoulos G, Defteros S Tags: Curr Pharm Des Source Type: research

White Matter Injury in Early Brain Injury after Subarachnoid Hemorrhage.
Abstract Subarachnoid hemorrhage (SAH) is a major cause of high morbidity, disability, and mortality in the field of neurovascular disease. Most previous SAH studies have focused on improving cerebral blood flow, reducing cerebral vasospasm, reducing neuronal calcium overload, and other treatments. While these studies showed exciting findings in basic science, therapeutic strategies based on the findings have not significantly improved neurological outcomes in patients with SAH. Currently, the only drug proven to effectively reduce the neurological defects of SAH patients is nimodipine. Current advances in imaging...
Source: Cell Transplantation - November 16, 2018 Category: Cytology Authors: Pang J, Peng J, Yang P, Kuai L, Chen L, Zhang JH, Jiang Y Tags: Cell Transplant Source Type: research

Inotodiol protects PC12 cells against injury induced by oxygen and glucose deprivation/restoration through inhibiting oxidative stress and apoptosis
Publication date: May 2018Source: Journal of Applied Biomedicine, Volume 16, Issue 2Author(s): Yan Li, Wenting Zhang, Chun Chen, Chunping Zhang, Jingyu Duan, Huankai Yao, Qunli Wei, Aiguo Meng, Jun ShiAbstractIschemic stroke is a severe cause of disability and death all over the world. To search for effective therapy for ischemic stroke, PC12 cells damaged by oxygenation and glucose deprivation/restoration were employed to assess the protective effects of inotodiol. As a result, inotodiol can improve the cell viability and attenuate the leakage of lactate dehydrogenase. Meanwhile, inotodiol can prevent oxidative stress by ...
Source: Journal of Applied Biomedicine - July 11, 2018 Category: Biotechnology Source Type: research

Ischemic stroke and kynurenines: medicinal chemistry aspects.
Abstract Ischemic stroke is one of the leading causes of mortality and permanent disability in developed countries. Stroke induces massive glutamate release, which in turn causes N-Methyl-D-aspartate (NMDA) receptor over-excitation and thus calcium overload in neurons leading to cell death via apoptotic cascades. The kynurenine pathway is a complex enzymatic cascade of tryptophan catabolism, generating various neuroactive metabolites. One metabolite, kynurenic acid (KYNA), is a potent endogenous NMDA glutamate receptor antagonist, making it a possible therapeutic tool to decrease excitotoxicity and neuroinflammati...
Source: Current Medicinal Chemistry - March 12, 2018 Category: Chemistry Authors: Hertelendy P, Toldi J, Fulop F, Vecsei L Tags: Curr Med Chem Source Type: research

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