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Nutrition: Antidoxidants

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Total 165 results found since Jan 2013.

Uric Acid Treatment After Stroke Prevents Long-Term Middle Cerebral Artery Remodelling and Attenuates Brain Damage in Spontaneously Hypertensive Rats
AbstractHypertension is the most important modifiable risk factor for stroke and is associated with poorer post-stroke outcomes. The antioxidant uric acid is protective in experimental normotensive ischaemic stroke. However, it is unknown whether this treatment exerts long-term protection in hypertension. We aimed to evaluate the impact of transient intraluminal middle cerebral artery (MCA) occlusion (90  min)/reperfusion (1–15 days) on brain and vascular damage progression in adult male Wistar-Kyoto (WKY;n = 36) and spontaneously hypertensive (SHR;n = 37) rats treated (i.v./120 min post-occlusion) with uric aci...
Source: Translational Stroke Research - September 15, 2018 Category: Neurology Source Type: research

Total Antioxidant Capacity Predicts Outcome in Acute Ischemic Stroke Subtypes in Egyptian Patients
Background: Oxidative stress after ischemic stroke contributes to neuronal cell injury. We tried to demonstrate an association between total antioxidant capacity (TAC) levels and outcomes after acute ischemic stroke (AIS). Methods: We enrolled 60 patients (36 females and 24 males) who were admitted to our hospital due to AIS, in addition to 30 age and sex-matched healthy controls. TAC levels were measured on day 1 of stroke onset, the relationships between TAC levels, stroke subtypes, and clinical outcomes based on the National Institutes of Health Stroke Scale and modified Rankin scale upon discharge were evaluated.
Source: Journal of Stroke and Cerebrovascular Diseases - April 19, 2019 Category: Neurology Authors: Nesma A.M. Ghonimi, Mohamed E. Mahdy, Osama A. Abdel Salam Source Type: research

Glycyrrhizin Prevents Hemorrhagic Transformation and Improves Neurological Outcome in Ischemic Stroke with Delayed Thrombolysis Through Targeting Peroxynitrite-Mediated HMGB1 Signaling
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.
Source: Translational Stroke Research - December 23, 2019 Category: Neurology Source Type: research

Improving Microcirculatory Reperfusion Reduces Parenchymal Oxygen Radical Formation and Provides Neuroprotection Basic Sciences
Conclusions—Promoting microvascular reperfusion by protecting vasculature can secondarily reduce parenchymal ROS formation and provide neuroprotection. The model presented can be used to directly assess pharmacological end points postulated in brain parenchyma and vasculature in vivo.
Source: Stroke - April 23, 2018 Category: Neurology Authors: Aslihan Taskiran-Sag, Muge Yemisci, Yasemin Gursoy-Ozdemir, Sefik Evren Erdener, Hulya Karatas, Deniz Yuce, Turgay Dalkara Tags: Ischemic Stroke, Neuroprotectants Original Contributions Source Type: research

Association between dietary antioxidant capacity and atherosclerotic carotid stenosis in patients with ischemic stroke
The aim of this study was to evaluate the relationship between dietary total antioxidant capacity (DTAC) and atherosclerotic carotid stenosis in patients with ischemic stroke.
Source: Journal of Stroke and Cerebrovascular Diseases - May 20, 2023 Category: Neurology Authors: Jizi Ma, Xuerong Jia, Yaqian Xia, Min Peng, Yantong Chen, Jingjing Cai, Xinfeng Liu, Gelin Xu Source Type: research

Cell-Based Therapies for Stroke: Promising Solution or Dead End? Mesenchymal Stem Cells and Comorbidities in Preclinical Stroke Research
Conclusion The high prevalence of comorbidities in patients with stroke indicates the need for therapies in preclinical studies that take into account these comorbidities in order to avoid failures in translation to the patient. Preclinical studies are beginning to evaluate the efficacy of MSC treatment in stroke associated with comorbidities, especially hypertension, for ischemic and hemorrhagic stroke. Regarding aging and diabetes, only ischemic stroke studies have been performed. For the moment, few studies have been performed and contradictory results are being reported. These contradictory results may be due to the u...
Source: Frontiers in Neurology - April 8, 2019 Category: Neurology Source Type: research

Using Dental Pulp Stem Cells for Stroke Therapy
Conclusion and Future Perspectives Stem cell-based therapy is a promising alternative for stroke treatment. While stem cells from different sources, including induced PSC, ESC, MSC, and NSC, have been investigated, using NSC and enhancing the natural mechanisms is most appropriate for brain repair. In preclinical models of stroke, stem cell transplantation has led to positive outcomes through a variety of cellular and molecular mechanisms, many being mediated by the array of beneficial factors produced by the cells. Recent advances in cellular reprogramming have provided alternative sources of NSC to be investigated, allo...
Source: Frontiers in Neurology - April 28, 2019 Category: Neurology Source Type: research

Protective Effect of Ergothioneine Against Stroke in Rodent Models
AbstractErgothioneine (ET) is a naturally occurring antioxidant and cytoprotective agent that is synthesized by fungi and certain bacteria. Recent studies have shown a beneficial effect of ET on neurological functions, including cognition and animal models of depression. The aim of this study is to elucidate a possible effect of ET in rodent models of stroke. Post-ischemic intracerebroventricular (i.c.v.) infusion of ET significantly reduced brain infarct volume by as early as 1  day after infusion in rats, as shown by triphenyltetrazolium chloride (TTC) assay. There was a dose-dependent increase in protection, from 50 to...
Source: NeuroMolecular Medicine - October 19, 2022 Category: Neurology Source Type: research

Ischemic preconditioning provides long-lasting neuroprotection against ischemic stroke: The role of Nrf2.
CONCLUSIONS: IPC provides long-lasting neuroprotection against ischemic brain injury and post-stroke cognitive dysfunction. Nrf2 activation plays a key role in this beneficial outcome and is a promising therapeutic target for the attenuation of ischemic brain injury. PMID: 31812555 [PubMed - as supplied by publisher]
Source: Experimental Neurology - December 4, 2019 Category: Neurology Authors: Yang T, Sun Y, Li Q, Li S, Shi Y, Leak RK, Chen J, Zhang F Tags: Exp Neurol Source Type: research

Circulating lncRNAs HIF1A-AS2 and LINLK-A: Role and Relation to Hypoxia-Inducible Factor-1 α in Cerebral Stroke Patients
This study investigated the expression of lncRNAs HIF1A-AS2 and LINK-A, and their target gene hypoxia-inducible factor-1 (HIF-1) in Egyptian stroke patients. It also aimed to determine the molecular mechanism implicated in the disease. A total of 75 stroke patients were divided into three clinical subgroups, besides 25 healthy controls of age-matched and sex-matched. Remarkable upregulation of lncRNA HIF1A-AS2 and HIF1- α along with a downregulation of lncRNA LINK-A was noticed in all stroke groups relative to controls. Serum levels of phosphatidylinositol 3-kinase (PI3K), phosphorylated-Akt (p-Akt), vascular endothelial ...
Source: Molecular Neurobiology - June 5, 2021 Category: Neurology Source Type: research

Superior antioxidant and anti-ischemic neuroprotective effects of cerebrolysin in heat stroke following intoxication of engineered metal Ag and Cu nanoparticles: A comparative biochemical and physiological study with other stroke therapies
Prog Brain Res. 2021;266:301-348. doi: 10.1016/bs.pbr.2021.06.014. Epub 2021 Oct 6.ABSTRACTMilitary personnel are often exposed to high environmental heat associated with industrial or ambient abundance of nanoparticles (NPs) affecting brain function. We have shown that engineered metal NPs Ag and Cu exacerbate hyperthermia induced brain pathology. Thus, exploration of novel drug therapy is needed for effective neuroprotection in heat stroke intoxicated with NPs. In this investigation neuroprotective effects of cerebrolysin, a balanced composition of several neurotrophic factors and active peptides fragments exhibiting pow...
Source: Brain Research - October 25, 2021 Category: Neurology Authors: Hari Shanker Sharma Dafin F Muresanu Asya Ozkizilcik Seaab Sahib Z Ryan Tian Jos é Vicente Lafuente Rudy J Castellani Ala Nozari Lianyuan Feng Anca D Buzoianu Preeti K Menon Ranjana Patnaik Lars Wiklund Aruna Sharma Source Type: research

High serum levels of malondialdehyde and antioxidant enzymes are associated with post-stroke anxiety
AbstractPost-stroke anxiety (PSA) is a common neuropsychiatric affective disorder occurring after stroke. The purpose of this study was to investigate the association between anxiety and the serum levels of oxidative stress markers at admission. First-ever or recurrent ischemic stroke patients were consecutively recruited into the study and followed up 1  month. Patients were divided into PSA and non-PSA group according DSM-IV criteria for anxiety due to stroke. Overall, 49 patients (24.1%) were diagnosed anxiety. Serum GPX (glutathione peroxidase), CAT (catalase), SOD (superoxide dismutase), and MDA (malondialdehyde) wer...
Source: Neurological Sciences - March 6, 2018 Category: Neurology Source Type: research