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Total 1249 results found since Jan 2013.

Epigenetics and stroke: role of DNA methylation and effect of aging on blood-brain barrier recovery
This study aimed to evaluate the epigenetic and transcriptional profile of cerebral microvessels after thromboembolic (TE) stroke to define potential causes of limited BBB recovery. RNA-sequencing and reduced representation bisulfite sequencing (RRBS) analyses were performed using microvessels isolated from young (6 months) and old (18 months) mice seven days poststroke compared to age-matched sham controls. DNA methylation profiling of poststroke brain microvessels revealed 11287 differentially methylated regions (DMR) in old and 9818 DMR in young mice, corresponding to annotated genes. These DMR were enriched in genes en...
Source: Cell Research - January 30, 2023 Category: Cytology Authors: Chelsea Phillips Svetlana Stamatovic Richard Keep Anuska Andjelkovic Source Type: research

Epigenetics and stroke: role of DNA methylation and effect of aging on blood –brain barrier recovery
This study aimed to evaluate the epigenetic and transcriptiona l profile of cerebral microvessels after thromboembolic (TE) stroke to define potential causes of limited BBB recovery. RNA-sequencing and reduced representation bisulfite sequencing (RRBS) analyses were performed using microvessels isolated from young (6 months) and old (18 months) mice seven day s poststroke compared to age-matched sham controls. DNA methylation profiling of poststroke brain microvessels revealed 11,287 differentially methylated regions (DMR) in old and 9818 DMR in young mice, corresponding to annotated genes. These DMR were enriched in gen...
Source: Fluids and Barriers of the CNS - February 28, 2023 Category: Neuroscience Source Type: research

Subclinical Vascular Composites Predict Clinical Cardiovascular Disease, Stroke, and Dementia: The Multi-Ethnic Study of Atherosclerosis (MESA)
CONCLUSIONS: Subclinical vascular composites of arteriosclerosis and atherosclerosis may be useful biomarkers to inform the vascular pathways contributing to events of CVD, CHD, stroke, and dementia.PMID:37205504 | PMC:PMC10187443 | DOI:10.1101/2023.05.01.23289364
Source: Atherosclerosis - May 19, 2023 Category: Cardiology Authors: Timothy M Hughes Jordan Tanley Haiying Chen Christopher L Schaich Joseph Yeboah Mark A Espeland Joao A C Lima Bharath Ambale-Venkatesh Erin D Michos Jingzhong Ding Kathleen Hayden Ramon Casanova Suzanne Craft Stephen R Rapp Jos é A Luchsinger Annette L F Source Type: research

Interpretable machine learning for predicting 28-day all-cause in-hospital mortality for hypertensive ischemic or hemorrhagic stroke patients in the ICU: a multi-center retrospective cohort study with internal and external cross-validation
ConclusionsThe XGBoost model accurately predicted 28-day all-cause in-hospital mortality among hypertensive ischemic or hemorrhagic stroke patients admitted to the ICU. The SHAP method can provide explicit explanations of personalized risk prediction, which can aid physicians in understanding the model.
Source: Frontiers in Neurology - August 8, 2023 Category: Neurology Source Type: research

Disruption of IP3R2-mediated Ca(2+) signaling pathway in astrocytes ameliorates neuronal death and brain damage while reducing behavioral deficits after focal ischemic stroke.
Abstract Inositol trisphosphate receptor (IP3R)-mediated intracellular Ca(2+) increase is the major Ca(2+) signaling pathway in astrocytes in the central nervous system (CNS). Ca(2+) increases in astrocytes have been found to modulate neuronal function through gliotransmitter release. We previously demonstrated that astrocytes exhibit enhanced Ca(2+) signaling in vivo after photothrombosis (PT)-induced ischemia, which is largely due to the activation of G-protein coupled receptors (GPCRs). The aim of this study is to investigate the role of astrocytic IP3R-mediated Ca(2+) signaling in neuronal death, brain damage ...
Source: Cell Calcium - September 25, 2015 Category: Cytology Authors: Li H, Xie Y, Zhang N, Yu Y, Zhang Q, Ding S Tags: Cell Calcium Source Type: research

Effects of Cilnidipine, an L/N-Type Calcium Channel Blocker, on Carotid Atherosclerosis in Japanese Post-Stroke Hypertensive Patients: Results from the CA-ATTEND Study.
CONCLUSIONS: Cilnidipine promoted the regression of common carotid IMT in post-stroke hypertensive patients, especially in the thick group. Cilnidipine also reduced the IAD in both normal and thick groups. PMID: 29225324 [PubMed - as supplied by publisher]
Source: Journal of Atherosclerosis and Thrombosis - December 12, 2017 Category: Cardiology Tags: J Atheroscler Thromb Source Type: research

Neuroprotective Action of Human Wharton's Jelly-Derived Mesenchymal Stromal Cell Transplants in a Rodent Model of Stroke.
Abstract Wharton's jelly-derived mesenchymal stromal cells (WJ-MSCs) have distinct immunomodulatory and protective effects against kidney, liver, or heart injury. Limited studies have shown that WJ-MSCs attenuates oxygen-glucose deprivation-mediated inflammation in hippocampal slices. The neuroprotective effect of intracerebral WJ-MSC transplantation against stroke has not been well characterized. The purpose of this study was to examine the neuroprotective effect of human WJ-MSC (hWJ-MSC) transplants in an animal model of stroke. Adult male Sprague-Dawley rats were anesthetized and placed in a stereotaxic frame. ...
Source: Cell Transplantation - October 4, 2018 Category: Cytology Authors: Wu KJ, Yu SJ, Chiang CW, Lee YW, Yen BL, Tseng PC, Hsu CS, Kuo LW, Wang Y Tags: Cell Transplant Source Type: research

Wnt-3a alleviates neuroinflammation after ischemic stroke by modulating the responses of microglia/macrophages and astrocytes.
Abstract Neuroinflammation crucially influences functional recovery after ischemic stroke. Wnt-3a, a novel Wnt protein that specifically promotes Wnt/β-catenin signaling pathway, has been shown to regulate apoptosis and cell proliferation, but how it affects ischemic stroke-induced toxic brain inflammation remains unknown. Using a transient middle cerebral artery occlusion (tMCAO) mouse model in this study, we found that intranasal Wnt-3a-treated tMCAO mice had apparently reduced infarct volume and decreased brain water content after being allowed to recover for 72 h, as well as better neurologic outcomes on da...
Source: International Immunopharmacology - July 15, 2019 Category: Allergy & Immunology Authors: Zhang D, Lu Z, Man J, Cui K, Fu X, Yu L, Gao Y, Liao L, Xiao Q, Guo R, Zhang Y, Zhang Z, Liu X, Lu H, Wang J Tags: Int Immunopharmacol Source Type: research

Relationship Between Sleep Apnea and Coronary Artery Calcium in Patients With Ischemic Stroke
Conclusion: Our findings indicate a relationship between coronary atherosclerotic burden measured by the CAC score and the severity of sleep apnea. Performing polysomnography could be useful for investigating the severity of hidden coronary artery disease among these patients.
Source: Frontiers in Neurology - July 30, 2019 Category: Neurology Source Type: research

Continuous theta burst stimulation provides neuroprotection by accelerating local cerebral blood flow and inhibiting inflammation in a mouse model of acute ischemic stroke.
Abstract Acute ischemic stroke is a leading cause of disability with limited therapeutic options. Continuous theta burst stimulation (cTBS) has recently been shown to be a promising noninvasive therapeutic strategy for neuroprotection in ischemic stroke patients. Here, we investigated the protective effects of cTBS following acute infarction using a photothrombotic stroke (PTS) model in the right posterior parietal cortex (PPC) of C57BL/6 mice. Treatment with cTBS resulted in a reduction in the volume of the infarct region and significantly increased vascular diameter and blood flow velocity in peri-infarct region...
Source: Brain Research - October 2, 2019 Category: Neurology Authors: Wu C, Li MN, Feng YW, He XF, Li WQ, Liang FY, Li X, Li G, Pei Z, Lan Y, Xu GQ Tags: Brain Res Source Type: research

Role of injection laryngoplasty in preventing post-stroke aspiration pneumonia, case series report
Conclusion: Injection laryngoplasty proved to be both successful and safe in improving glottic closure with immediate results in those who had failed to show a positive response after long-term swallowing rehabilitation. The positive and dramatic clinical outcomes were observed through changes in the coughing force. Our case series support the use of injection larygnoplasty as a powerful adjunctive treatment method to prevent aspiration pneumonia in post-stroke patients with vocal fold insufficiency. Pre- and post-injection peak cough flow changes may reflect improvement in glottic closure and indicate the safety of swal...
Source: Medicine - February 1, 2020 Category: Internal Medicine Tags: Research Article: Clinical Case Report Source Type: research

p5 Peptide-Loaded Human Adipose-Derived Mesenchymal Stem Cells Promote Neurological Recovery After Focal Cerebral Ischemia in a Rat Model
In conclusion, administration of hADMSC-loaded p5 peptide to post-stroke rats created conditions that supported survival of drug-loaded hADMSCs after cerebral ischemia, suggesting its therapeutic potential in patients with stroke.
Source: Translational Stroke Research - May 5, 2020 Category: Neurology Source Type: research

Association between the high risk for obstructive sleep apnea and intracranial carotid artery calcification in patients with acute ischemic stroke
ConclusionsThis study showed that the presence of calcium in symptomatic intracranial ICA was related to high risk for OSA in patients with acute ischemic stroke.
Source: Sleep and Breathing - June 18, 2020 Category: Respiratory Medicine Source Type: research

Improvement of a novel proposal for antioxidant treatment against brain damage occurring in ischemic stroke patients.
Abstract The underlying mechanism of cerebral injury occurring in patients with acute ischemic stroke involves a key pathophysiological role of oxidative stress. Thus, reactive oxygen species are related to the development of brain edema, calcium overload, mitochondrial dysfunction, excitotoxicity, iron release and inflammation. Nevertheless, although experimental studies have tested the use of antioxidants as an adjuvant therapy in this setting, clinical data and randomized trials are still lacking. Current approved pharmacological therapy is aimed at reperfusion strategies; however, the therapeutic window is lim...
Source: CNS and Neurological Disorders Drug Targets - September 9, 2020 Category: Drugs & Pharmacology Authors: Orellana-Urzúa S, Claps G, Rodrigo R Tags: CNS Neurol Disord Drug Targets Source Type: research