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Total 12254 results found since Jan 2013.

Delayed Administration of Angiotensin II Type 2 Receptor (AT2R) Agonist Compound 21 Prevents the Development of Post-stroke Cognitive Impairment in Diabetes Through the Modulation of Microglia Polarization
AbstractA disabling consequence of stroke is cognitive impairment, occurring in 12% –48% of patients, for which there is no therapy. A critical barrier is the lack of understanding of how post-stroke cognitive impairment (PSCI) develops. While 70% of stroke victims present with comorbid diseases such as diabetes and hypertension, the limited use of comorbid disease models in prec linical research further contributes to this lack of progress. To this end, we used a translational model of diabetes to study the development of PSCI. In addition, we evaluated the application of compound 21 (C21), an angiotensin II Type 2 rece...
Source: Translational Stroke Research - December 2, 2019 Category: Neurology Source Type: research

Endogenous Regulatory T Cells Promote M2 Macrophage Phenotype in Diabetic Stroke as Visualized by Optical Imaging
AbstractRegulatory T cells (Tregs) play an immunosuppressive role in various diseases, yet their function remains controversial in stroke and obscure in diabetic stroke. In the present study, Tregs were found downregulated in the peripheral blood of type 2 diabetes mellitus (T2DM) stroke models and patients compared with controls. In ischemic stroke mice (both T2DM and wild type), endogenous Tregs boosted by CD28SA increased CD206+ M2 macrophage/microglia cells, decreased infarct volumes, and improved neurological recovery. Our results demonstrated the potential of boosting Tregs for treating T2DM stroke. Furthermore, we u...
Source: Translational Stroke Research - April 1, 2020 Category: Neurology Source Type: research

Deferoxamine Treatment Prevents Post-Stroke Vasoregression and Neurovascular Unit Remodeling Leading to Improved Functional Outcomes in Type 2 Male Diabetic Rats: Role of Endothelial Ferroptosis
This study aimed to determine the impact of iron chelation with deferoxamine (DFX) on (1) cerebral vascularization patterns and (2) functional outcomes after stroke in control and diabetic rats. After 8  weeks of type 2 diabetes induced by a combination of high-fat diet and low-dose streptozotocin, male control and diabetic animals were subjected to thromboembolic middle cerebral artery occlusion (MCAO) and randomized to vehicle, DFX, or tPA/DFX and followed for 14 days with behavioral tests. Vas cular indices (vascular volume and surface area), neurovascular remodeling (AQP4 polarity), and microglia activation were meas...
Source: Translational Stroke Research - August 31, 2020 Category: Neurology Source Type: research

Predictors of Recurrent Ischemic Stroke in Obese Patients With Type 2 Diabetes Mellitus: A Population-based Study
Each year, approximately 0.8 million people are estimated to experience a new or recurrent stroke, according to the 2019 report of the American Heart Association.1 In Malaysia, stroke is the third leading cause of death after ischemic heart disease (IHD) and pneumonia.2 Both obesity and diabetes are considered as the established independent risk factors for ischemic stroke.3 Type 2 diabetes mellitus (T2DM) was also found to be associated with an increase in all-cause as well as cardiovascular mortality following the stroke,4,5 and in a meta-analysis of 18 studies, patients with diabetes had a higher stroke recurrence as co...
Source: Journal of Stroke and Cerebrovascular Diseases - August 11, 2020 Category: Neurology Authors: Orwa Albitar, Sabariah Noor Harun, Nur Ezzati Abidin, Balamurugan Tangiisuran, Hadzliana Zainal, Irene Looi, Khairul Azmi Ibrahim, Norsima Nazifah Sidek, Keat Wei Loo, Keng Yee Lee, Zariah Abdul Aziz, Siti Maisharah Sheikh Ghadzi Source Type: research

Coffee Consumption and Stroke Risk: Evidence from a Systematic Review and Meta-Analysis of more than 2.4 Million Men and Women
Stroke remains the leading cause of disability and mortality globally. Based on the Global Burden of Disease Study 2016, it was estimated that there were 13.7 million new stroke cases, 5.5 million deaths, 80.1 million prevalent cases, and 116.4 million disability-adjusted life-years.1 About 75% of stroke cases are ischemic, whereas the remaining cases are hemorrhagic.2 Stroke incidence increases with age. Well-known risk factors for stroke include personal history of hypertension, diabetes and cardiac diseases, unhealthy behavioral factors (heavy cigarette consumption, less physical inactivity, poor diet), and serious environmental risks.
Source: Journal of Stroke and Cerebrovascular Diseases - November 11, 2020 Category: Neurology Authors: Chuan Shao, Hui Tang, Xiaoya Wang, Jiaquan He Source Type: research

Diabetes Mellitus/Poststroke Hyperglycemia: a Detrimental Factor for tPA Thrombolytic Stroke Therapy
AbstractIntravenous administration of tissue-type plasminogen activator (IV tPA) therapy has long been considered a mainstay in ischemic stroke management. However, patients respond to IV tPA therapy unequally with some subsets of patients having worsened outcomes after treatment. In particular, diabetes mellitus (DM) is recognized as a clinically important vascular comorbidity that leads to lower recanalization rates and increased risks of hemorrhagic transformation (HT). In this short-review, we summarize the recent advances in understanding of the underlying mechanisms involved in post-IV tPA worsening of outcome in dia...
Source: Translational Stroke Research - April 20, 2021 Category: Neurology Source Type: research

Skin Autofluorescence is an Independent Predictor of Post Stroke Infection in Diabetes
Post stroke infection occurs in 15 –20% of acute stroke patients and is associated with a poor longterm outcome. In a prospective study on 113 acute ischemic stroke patients with diabetes mellitus 15.9% suffered nosocomial infection. We found chronic hyperglycemia measured by skin autofluorescence in arbitrary units to be an indepe ndent predictor of a nosocomial infection post stroke (OR = 3.24 [CI 95%: 1.13; 9.26], p = 0.029). Skin autofluorescence represents the glycemic memory beyond HbA1c. Potential mechanisms leading from increased skin autofluorescence to vulnerability for infectious complications include ...
Source: Journal of Stroke and Cerebrovascular Diseases - June 26, 2021 Category: Neurology Authors: Alexandra Filipov, Heike Fuchshuber, Josephine Kraus, Anne D. Ebert, Vesile Sandikci, Angelika Alonso Source Type: research

Premature atherosclerosis: A major contributor to early-onset ischemic stroke
Atherosclerosis is an age-dependent process. The prevalence of large-artery atherosclerosis in case series of ischemic stroke in young adults has been substantially less than in older adults.1–4 Historically, data on the role of atherosclerosis in early-onset stroke have been limited for a variety of reasons. First, multi-institutional studies often have inconsistent evaluations of the cerebral vasculature, particularly the intracranial circulation. Second, studies may not report evidence for proximal atherosclerosis less severe than necessary to meet criteria for etiology. Emerging data, however, show a high inciden...
Source: Neurology - April 1, 2013 Category: Neurology Authors: Kittner, S. J., Singhal, A. B. Tags: Stroke in young adults, Ultrasound, Prevalence studies, Risk factors in epidemiology EDITORIALS Source Type: research

Usefulness of N-Terminal Pro-B-Type Natriuretic Peptide Levels for Stroke Risk Prediction in Anticoagulated Patients With Atrial Fibrillation Clinical Sciences
Conclusions— In real-world cohort of anticoagulated patients with AF, NT-proBNP provided complementary prognostic information to an established clinical risk score (CHA2DS2–VASc) for the prediction of stroke/systemic embolism. NT-proBNP was also predictive of all-cause mortality, suggesting that this biomarker may potentially be used to refine clinical risk stratification in anticoagulated patients with AF.
Source: Stroke - February 24, 2014 Category: Neurology Authors: Roldan, V., Vilchez, J. A., Manzano-Fernandez, S., Jover, E., Galvez, J., Puche, C. M., Valdes, M., Vicente, V., Lip, G. Y. H., Marin, F. Tags: Arterial thrombosis, Coumarins, Anticoagulants Clinical Sciences Source Type: research

The Role of Classic Risk Factors and Prothrombotic Factor Gene Mutations in Ischemic Stroke Risk Development in Young and Middle-Aged Individuals
Background: In young individuals, a genetically predisposing hypercoagulability and classic modifying risk factors can act synergistically on the ischemic stroke risk development. The aim of the study was to compare the prevalence of classic vascular risk factors and polymorphisms of the G20210A coagulation factor II (prothrombin), Arg506Glu coagulation factor V Leiden, C677T methylenetetrahydrofolate reductase (MTHFR), and 4G/5G plasminogen activator inhibitor-1 (PAI-1) and the impact of these gene mutations and classic vascular risk factors on the overall stroke risk in individuals aged 55 years or younger.Methods: The s...
Source: Journal of Stroke and Cerebrovascular Diseases - November 4, 2013 Category: Neurology Authors: Visnja Supanc, Zdenko Sonicki, Ines Vukasovic, Vesna V. Solter, Iris Zavoreo, Vanja B. Kes Tags: Original Articles Source Type: research

Aspirin plus clopidogrel in acute minor ischaemic stroke or transient ischaemic attack is superior to aspirin alone for stroke risk reduction: CHANCE trial
Commentary on: Wang Y, Wang Y, Zhao X, et al.. Clopidogrel with aspirin in acute minor stroke or transient ischemic attack. N Engl J Med 2013;369:11–19. Context Combination therapy with aspirin added to clopidogrel has had a disappointing record in the prevention of recurrent stroke. The management of atherothrombosis with clopidogrel in high-risk patients (MATCH)1 and the secondary prevention of small subcortical strokes (SPS3)2 randomised controlled trials (RCTs) showed that combination therapy was not more effective than clopidogrel or aspirin alone, but was associated with two to three times the risk of major or ...
Source: Evidence-Based Medicine - March 19, 2014 Category: Internal Medicine Authors: Gorelick, P. B., Farooq, M. U. Tags: Smoking and tobacco, Clinical trials (epidemiology), Genetics, Stroke, Hypertension, Diabetes, Health education, Smoking Therapeutics Source Type: research

Cross-Border Acute Ischemic Stroke Subtype Comparison Between Hispanics and Mexican Mestizos (P1.123)
CONCLUSIONS: Small artery ischemic strokes were the most common subtype in both MM and Hispanic patients, and occurred with a similar frequency in the two populations. This similarity could be a consequence of a high pre-existing condition of hypertension in both groups. A higher incidence of large vessel and cardioembolic ischemic strokes were seen in MM compared with Hispanics, which may reflect the higher number of patients with risk factors of smoking and atrial fibrillation in the MM group.Disclosure: Dr. Cerdan-Trevino has nothing to disclose. Dr. Cantu-Martinez has nothing to disclose. Dr. Mora-Villalvazo has nothin...
Source: Neurology - April 9, 2014 Category: Neurology Authors: Cerdan-Trevino, M., Cantu-Martinez, L., Mora-Villalvazo, R., Martinez, H., Hughes, R., Poisson, S. Tags: Cerebrovascular Disease and Interventional Neurology: Ischemic Stroke Subtype Source Type: research

Troponin Elevation in Intra-arterial Stroke Intervention (P4.211)
CONCLUSIONS: Aggressive treatment may increase the risk of troponin elevation without increasing mortality in AIS patients. This finding is reassuring in view of continued interest in IA treatment of stroke in addition to tPA thrombolysis.Disclosure: Dr. Kumar has nothing to disclose. Dr. Mehta has nothing to disclose. Dr. Alawi has nothing to disclose. Dr. Michael has nothing to disclose.
Source: Neurology - April 9, 2014 Category: Neurology Authors: Kumar, A., Mehta, S., Alawi, A., Michael, A. Tags: Cerebrovascular Disease and Interventional Neurology: Acute Stroke Endovascular Source Type: research

Prevalence of Intracranial Stenosis in a Norwegian Ischemic Stroke Population
Conclusions: IS occurs in approximately 10% and is symptomatic in about 7% of a Norwegian ischemic stroke/TIA population. Diabetes mellitus appears to be the major risk factor for IS.
Source: Journal of Stroke and Cerebrovascular Diseases - March 28, 2014 Category: Neurology Authors: Nicola Logallo, Halvor Naess, Ulrike Waje-Andreassen, Lars Thomassen Tags: Original Articles Source Type: research

Safety of Standard-dose (.9-mg/kg) Alteplase Intravenous Thrombolysis for Acute Ischemic Stroke in Afro–Caribbeans, French West Indies
Conclusions: The excess hemorrhagic risk after standard-dose alteplase infusion into older Afro–Caribbean patients warrants further study to determine the possible role of cerebral microangiopathy and should be evaluated in different black populations.
Source: Journal of Stroke and Cerebrovascular Diseases - June 23, 2014 Category: Neurology Authors: Nicolas Chausson, Stéphane Olindo, Julien Joux, Martine Saint-Vil, Mathieu Aveillan, Didier Smadja Tags: Original Articles Source Type: research