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Nutrition: Antidoxidants

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Effects of rehabilitation training on apoptosis of nerve cells and the recovery of neural and motor functions in rats with ischemic stroke through the PI3K/Akt and Nrf2/ARE signaling pathways.
This study was designed in order to investigate the effects between rehabilitation training on the apoptosis of nerve cells and the recovery of neural and motor functions of rats with ischemic stroke by way of the phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) and nuclear factor E2-related factor 2/antioxidant responsive element (Nrf2/ARE) signaling pathways. In total, 110 healthy adult male Sprague-Dawley (SD) rats were selected in order to take part in this study. Ninety SD rats were used in order to establish the middle cerebral artery occlusion (MCAO), among which 80 rats were randomly assigned as part of th...
Source: Brain Research Bulletin - August 23, 2017 Category: Neurology Authors: Jin XF, Wang S, Shen M, Wen X, Han XR, Wu JC, Tang GZ, Wu DM, Lu J, Zheng YL Tags: Brain Res Bull Source Type: research

Development of a Reactive Oxygen Species-Sensitive Nitric Oxide Synthase Inhibitor for the Treatment of Ischemic Stroke.
In this study, the nitrone 5was designed such that its decomposition product is a NOS inhibitor, 6, effectively leading to NOS inhibition specifically at the site of ROS production. The ability of 5to spin-trap radicals and decompose to 6 was observed using EPR and LC-MS/MS. The pro-drug concept was tested in vitro by measuring cell viability and 6 formation in SH-SY5Y cells subjected to oxygen glucose deprivation (OGD). 5 was found to be more efficacious and more potent than PBN, and was able to increase phospho-Akt while reducing nitrotyrosine and cleaved caspase-3 levels. 6 treatment, but not 5, was found to decrease NO...
Source: Free Radical Biology and Medicine - December 21, 2017 Category: Biology Authors: Nash KM, Schiefer IT, Shah ZA Tags: Free Radic Biol Med Source Type: research

Treatment with Uric Acid Reduces Infarct and Improves Neurologic Function in Female Mice After Transient Cerebral Ischemia
Exogenous administration of uric acid, a naturally occurring antioxidant that scavenges reactive oxygen species in vasculature, has shown protective efficacy in both rodent models of stroke and human stroke patients in Spain as an adjuvant treatment to mechanical thrombectomy. Before clinical trials can be initiated in the United States, however, confirmation of efficacy in alternative preclinical models is required in accordance with stroke therapy academic industry roundtable-RIGOR criteria. To date, preclinical efficacy has only been established in the acute setting in male rodents.
Source: Journal of Stroke and Cerebrovascular Diseases - February 3, 2018 Category: Neurology Authors: Nirav Dhanesha, Edwin V ázquez-Rosa, Coral J. Cintrón-Pérez, Daniel Thedens, Alexa J. Kort, Vicky Chuong, Adriana M. Rivera-Dompenciel, Anil K. Chauhan, Enrique C. Leira, Andrew A. Pieper Source Type: research

AMPA receptor antagonist perampanel ameliorates post-stroke functional and cognitive impairments
Publication date: Available online 5 July 2018Source: NeuroscienceAuthor(s): Masataka Nakajima, Satoshi Suda, Kota Sowa, Yuki Sakamoto, Chikako Nito, Yasuhiro Nishiyama, Junya Aoki, Masayuki Ueda, Shoji Yokobori, Marina Yamada, Hiroyuki Yokota, Takashi Okada, Kazumi KimuraAbstractPerampanel (PER), a noncompetitive α-amino-3-hydroxy-5-methyl-4-isoxazole propionate receptor antagonist, clinically used for seizure control, has been reported to exert neuroprotective effects in experimental models of neurodegenerative diseases. However, few studies have investigated the therapeutic effects of PER in brain injury including stro...
Source: Neuroscience - July 5, 2018 Category: Neuroscience Source Type: research

Green Tea and Red Tea from Camellia sinensis Partially Prevented the Motor Deficits and Striatal Oxidative Damage Induced by Hemorrhagic Stroke in Rats.
In this study, we investigated the effects of supplementation with green tea and red tea from Camellia sinensis on motor deficits and striatum oxidative damage in rats submitted to hemorrhagic stroke (ICH). Male Wistar rats were supplemented with green tea, red tea, or vehicle for 10 days prior to ICH induction. After injury, the rats were submitted to motor tests (open field for locomotion, rotarod for balance, and neurological deficit scale (NDS)) 1, 3, and 7 days after ICH induction, while the tea supplementation was maintained. Subsequently, the rats were euthanized to striatal tissue dissection for biochemical analyze...
Source: Neural Plasticity - September 5, 2018 Category: Neurology Authors: Sosa PM, de Souza MA, Mello-Carpes PB Tags: Neural Plast Source Type: research

Oxidative stress and stroke: a review of upstream and downstream antioxidant therapeutic options
AbstractThe stroke is a cerebrovascular disorder and is the cause of a second mortality and long-lasting harm worldwide. It is classified into two types: hemorrhagic and ischemic stroke. Globally, 13% of cases of stroke are hemorrhagic, while the remaining 87% are ischemic. In this paper, we discuss the consideration of factors which possibly affect the effectiveness of antioxidant protection under oxygen deprivation, as well as oxidative stress. Such aspects as compartmentalization of reactive oxygen species (ROS)/reactive nitrogen species (RNS) formation and antioxidant localization, synthesis and transport of antioxidan...
Source: Comparative Clinical Pathology - April 8, 2019 Category: Pathology Source Type: research

Post-stroke depression: Antidepressive effects of a chemically characterized maqui berry extract in a mouse model (Aristotelia chilensis (molina) stuntz).
This study aimed to evaluate the antidepressive-like effects and in vivo antioxidant activity of a chemically characterized maqui berry (Aristotelia chilensis (Molina) Stuntz) extract obtained from an optimized extraction method, on a murine PSD model. The extraction process was optimized to maximize anthocyanin content, and the phytochemical profile of the extract was evaluated using a multi-methodological approach including a liquid chromatographic method coupled with mass spectrometry and nuclear magnetic resonance spectroscopy. The antidepressive-like activity was investigated through despair swimming and tail suspensi...
Source: Food and Chemical Toxicology - April 21, 2019 Category: Food Science Authors: Di Lorenzo A, Sobolev AP, Nabavi SF, Sureda A, Moghaddam AH, Khanjani S, Xiao J, Shirooie S, Tsetegho Sokeng AJ, Baldi A, Mannina L, Nabavi SM, Daglia M Tags: Food Chem Toxicol Source Type: research

Magnesium sulfate protects blood –brain barrier integrity and reduces brain edema after acute ischemic stroke in rats
This study was designed to evaluate the effects of magnesium sulfate on vasogenic brain edema formation and blood –brain barrier (BBB) disruption caused by ischemia-reperfusion (IR) in a rat model of ischemic stroke. A total of 72 male Sprague-Dawley rats were categorized into the following three primary groups: sham, control ischemic, magnesium-sulfate-treated (300 mg/kg loading dose, followed by an additio nal 100 mg/kg) ischemic (n = 24 in each group). Transient focal cerebral ischemia was induced by 60-min-long occlusion of the left middle cerebral artery, followed by 24-h-long reperfusion. Sensorimotor deficit...
Source: Metabolic Brain Disease - April 28, 2019 Category: Neurology Source Type: research

Selenium Drives a Transcriptional Adaptive Program to Block Ferroptosis and Treat Stroke
Publication date: Available online 2 May 2019Source: CellAuthor(s): Ishraq Alim, Joseph T. Caulfield, Yingxin Chen, Vivek Swarup, Daniel H. Geschwind, Elena Ivanova, Javier Seravalli, Youxi Ai, Lauren H. Sansing, Emma J. Ste.Marie, Robert J. Hondal, Sushmita Mukherjee, John W. Cave, Botir T. Sagdullaev, Saravanan S. Karuppagounder, Rajiv R. RatanSummaryFerroptosis, a non-apoptotic form of programmed cell death, is triggered by oxidative stress in cancer, heat stress in plants, and hemorrhagic stroke. A homeostatic transcriptional response to ferroptotic stimuli is unknown. We show that neurons respond to ferroptotic stimul...
Source: Cell - May 3, 2019 Category: Cytology Source Type: research

The effects of alpha-lipoic acid supplementation on fasting glucose and lipid profiles among patients with stroke: a systematic review and meta-analysis of randomized controlled trials
ConclusionsThis meta-analysis suggested the beneficial impacts of ALA supplementation in improving fasting glucose of patients diagnosed with stroke.
Source: Journal of Diabetes and Metabolic Disorders - July 28, 2019 Category: Endocrinology Source Type: research

Nanoparticles of resveratrol attenuates oxidative stress and inflammation after ischemic stroke in rats
Int Immunopharmacol. 2021 Mar 3;94:107494. doi: 10.1016/j.intimp.2021.107494. Online ahead of print.ABSTRACTResveratrol is a nutraceutical compound that has exciting pharmacological potential in different diseases, including stroke. Due to its low bioavailability, the efficacy of resveratrol is minimal. Hence, the present study is aimed to synthesize and characterize nanoparticles of resveratrol (NR) followed by evaluating the neuroprotective role and elucidate the mechanism of NR in a rat model of middle cerebral artery occlusion (MCAO). Male Wistar rats (280-300 g) were pretreated with various doses (125 µg, 250 µg, an...
Source: International Immunopharmacology - March 6, 2021 Category: Allergy & Immunology Authors: Mohammad Ashafaq M Intakhab Alam Andleeb Khan Farah Islam Gulrana Khuwaja Sohail Hussain Raisuddin Ali Saeed Alshahrani Hafiz Antar Makeen Hassan A Alhazmi Mohammed Al Bratty Fakhrul Islam Source Type: research

Post Stroke Safinamide Treatment Attenuates Neurological Damage by Modulating Autophagy and Apoptosis in Experimental Model of Stroke in Rats
AbstractExploring and repurposing a drug have become a lower risk alternative. Safinamide, approved for Parkinson ’s disease, has shown neuroprotection in various animal models of neurological disorders. The present study aimed to explore the potential of safinamide in cerebral ischemia/reperfusion (I/R) in rats. Sprague–Dawley rats were used in middle cerebral artery occlusion model of stroke. The effectiv e dose of safinamide was selected based on the results of neurobehavioral parameters and reduction in infarct size assessed 24 h post-reperfusion. For sub-acute study, the treatment with effective dose was extended...
Source: Molecular Neurobiology - August 28, 2021 Category: Neurology Source Type: research

Is Selenium Supplementation Beneficial in Acute Ischemic Stroke?
This study proposed to investigate the effect of intravenous Se (Selenase) administration in patients with acute ischemic stroke (AIS) on neurological outcomes, antioxidant enzyme activity, and inflammatory marker levels. Methods: AIS patients (n=50) were recruited from a neurology unit of a university-affiliated hospital. Patients were randomly assigned to receive either Selenase or placebo (saline) for 5 days. The modified ranking scale, the national institute of health stroke scale, and the mini-mental state examination, as primary outcomes, and the serum GPx concentration, total antioxidant activity, and tumor n...
Source: The Neurologist - March 1, 2022 Category: Neurology Tags: Original Articles Source Type: research