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Total 109 results found since Jan 2013.

Microbiological Etiologies of Pneumonia Complicating Stroke Clinical Sciences
Conclusions—Although the analysis was limited by small and heterogeneous study populations, limiting determination of microbiological causality, this review suggests aerobic Gram-negative bacilli and Gram-positive cocci are frequently associated with pneumonia complicating stroke. This supports the need for appropriately designed studies to determine microbial cause and a consensus-based approach in antibiotic usage and further targeted antibiotic treatment trials for enhanced antibiotic stewardship.
Source: Stroke - June 25, 2018 Category: Neurology Authors: Amit K. Kishore, Andy Vail, Adam R. Jeans, Angel Chamorro, Mario Di Napoli, Lalit Kalra, Peter Langhorne, Christine Roffe, Willeke Westendorp, Paul J. Nederkoorn, Javier Garau, Diederik van de Beek, Joan Montaner, Mark Woodhead, Andreas Meisel, Craig J. S Tags: Complications, Meta Analysis, Cerebrovascular Disease/Stroke, Intracranial Hemorrhage, Ischemic Stroke Original Contributions Source Type: research

Brain-Derived Neurotrophic Factor Administration Mediated Oligodendrocyte Differentiation and Myelin Formation in Subcortical Ischemic Stroke Basic Sciences
Conclusions— BDNF administration exerted better functional outcome, oligodendrogenesis, remyelination, and fiber connectivity than controls in rats subjected to subcortical damage in ischemic stroke.
Source: Stroke - December 22, 2014 Category: Neurology Authors: Ramos-Cejudo, J., Gutierrez-Fernandez, M., Otero-Ortega, L., Rodriguez-Frutos, B., Fuentes, B., Vallejo-Cremades, M. T., Hernanz, T. N., Cerdan, S., Diez-Tejedor, E. Tags: Animal models of human disease, Acute Cerebral Infarction, Neuroprotectors Basic Sciences Source Type: research

Misdiagnosis in Young Patients with Ischemic Stroke (P7.122)
Conclusions It is essential to increase awareness that young patients with stroke may present to emergency department with minor symptoms of artery dissection mainly involving the posterior circulation and lacking cardiovascular risk factors.Disclosure: Dr. Leon has nothing to disclose. Dr. Pantiu has nothing to disclose. Dr. Quiroga has nothing to disclose. Dr. Bonardo has nothing to disclose. Dr. Uribe has nothing to disclose. Dr. Mazziotti has received research support from Shire Pharmaceuticals Group. Dr. Zinnerman has nothing to disclose. Dr. Martinez has nothing to disclose. Dr. Sotelo has nothing to disclose. Dr. Ju...
Source: Neurology - April 8, 2015 Category: Neurology Authors: Leon, L., Pantiu, F., Quiroga, J., Bonardo, P., Uribe, C., Mazziotti, J., Zinnerman, A., Martinez, A., Sotelo, A., Jure, L., Nofal, P., Bendersky, E., Sposato, L. A., Riccio, P., Reisin, R., Fernandez Pardal, M. Tags: Cerebrovascular Disease and Interventional Neurology: Stroke in Young Source Type: research

Rosiglitazone Promotes White Matter Integrity and Long-Term Functional Recovery After Focal Cerebral Ischemia Basic Sciences
Conclusions— Rosiglitazone treatment improves long-term white matter integrity after cerebral ischemia, at least, in part, by promoting oligodendrogenesis and facilitating microglial polarization toward the beneficial M2 phenotype.
Source: Stroke - August 24, 2015 Category: Neurology Authors: Han, L., Cai, W., Mao, L., Liu, J., Li, P., Leak, R. K., Xu, Y., Hu, X., Chen, J. Tags: Other Stroke Treatment - Medical Basic Sciences Source Type: research

Do Physically Active Patients Have Better Functional Outcome after Stroke? A Systematic Review
Stroke is one of the major causes of mortality and, among survivors, disability. Physical activity has a protective effect maybe due to a major control of risk factors, such as hypertension, diabetes mellitus, and body weight. However, the effect of prestroke physical activity and the poststroke functional outcomes needs clarification.
Source: Journal of Stroke and Cerebrovascular Diseases - December 3, 2015 Category: Neurology Authors: Mariely Trigo Tumasz, Tathiana Trócoli, Matheus Fernandes de Oliveira, Ricardo Rezende Campos, Ricardo Vieira Botelho Source Type: research

Histone deacetylase expression in white matter oligodendrocytes after stroke
Publication date: November 2014 Source:Neurochemistry International, Volume 77 Author(s): Haifa Kassis , Michael Chopp , Xian Shuang Liu , Amjad Shehadah , Cynthia Roberts , Zheng Gang Zhang Histone deacetylases (HDACs) constitute a super-family of enzymes grouped into four major classes (Class I–IV) that deacetylate histone tails leading to chromatin condensation and gene repression. Whether stroke-induced oligodendrogenesis is related to the expression of individual HDACs in the oligodendrocyte lineage has not been investigated. We found that 2days after stroke, oligodendrocyte progenitor cells (OPCs) and mature olig...
Source: Neurochemistry International - November 4, 2014 Category: Neuroscience Source Type: research

A study of the correlation between stroke and gut microbiota over the last 20years: a bibliometric analysis
ConclusionFindings suggest that in the next 10 years, the number of publications produced annually may increase significantly. Future research trends tend to concentrate on the mechanisms of stroke and gut microbiota, with the inflammation and immunological mechanisms, TMAO, and fecal transplantation as hotspots. And the relationship between these mechanisms and a particular cardiovascular illness may also be a future research trend.
Source: Frontiers in Microbiology - June 7, 2023 Category: Microbiology Source Type: research

The model homologue of the partially defective human 5,10-methylenetetrahydrofolate reductase, considered as a risk factor for stroke due to increased homocysteine level, can be protected and reactivated by heat shock proteins
AbstractThe A222  V substitution in the humanMTHFR gene product (5,10-methylenetetrahydrofolate reductase) is responsible for a decreased activity of this enzyme. This may cause an increased homocysteine level, considered as a risk factor for arteriosclerosis and stroke. The bacterial homologue of the human enzyme, MetF, has been found to be a useful model in genetic and biochemical studies. The similarity ofEscherichia coli MetF and human MTHFR proteins is so high that particular mutations in the corresponding human gene can be reflected by the bacterial mutants. For example, the A222  V substitution in MTHFR (caused by...
Source: Metabolic Brain Disease - September 22, 2016 Category: Neurology Source Type: research

PAR1 biased signaling is required for activated protein C in vivo benefits in sepsis and stroke
Activated protein C (APC) cleaves protease-activated receptor 1 (PAR1) in vitro at R46 to initiate beneficial cell signaling; however, thrombin and APC can cleave at R41. To elucidate PAR1-dependent aspects of the pharmacologic in vivo mechanisms of APC, we generated C57BL/6 mouse strains carrying QQ41 or QQ46 point mutations in PAR1 (F2r gene). Using these strains, we determined whether or not recombinant murine signaling-selective APC mutants would reduce septic death or provide neuroprotection against ischemic stroke when mice carried PAR1-homozygous mutations that prevent cleavage at either R41 or R46. Intercrossing PA...
Source: Blood - March 15, 2018 Category: Hematology Authors: Sinha, R. K., Wang, Y., Zhao, Z., Xu, X., Burnier, L., Gupta, N., Fernandez, J. A., Martin, G., Kupriyanov, S., Mosnier, L. O., Zlokovic, B. V., Griffin, J. H. Tags: Plenary Papers, Thrombosis and Hemostasis, Vascular Biology Source Type: research

Visualizing the kinetic power stroke that drives proton-coupled zinc(ii) transport
hance & Dax Fu The proton gradient is a principal energy source for respiration-dependent active transport, but the structural mechanisms of proton-coupled transport processes are poorly understood. YiiP is a proton-coupled zinc transporter found in the cytoplasmic membrane of Escherichia coli. Its transport site receives protons from water molecules that gain access to its hydrophobic environment and transduces the energy of an inward proton gradient to drive Zn(ii) efflux. This membrane protein is a well-characterized member of the family of cation diffusion facilitators that occurs at all phylogenetic levels. H...
Source: Nature - June 22, 2014 Category: Research Authors: Sayan GuptaJin ChaiJie ChengRhijuta D’MelloMark R. ChanceDax Fu Tags: Letter Source Type: research

Gut Dysbiosis Is Associated With the Severity of Cryptogenic Stroke and Enhanced Systemic Inflammatory Response
In conclusion, gut dysbiosis in CS patients was associated with the severity of CS and the systemic inflammation. Maintaining the intestinal homeostasis may be a potential strategy for the treatment of CS.
Source: Frontiers in Immunology - May 6, 2022 Category: Allergy & Immunology Source Type: research

Neuregulin-1/PI3K signaling effects on oligodendrocyte proliferation, remyelination and behaviors deficit in a male mouse model of ischemic stroke
In this study, we investigated the effect of neuregulin-1 (NRG1) on demyelination and neurological function in an ischemic stroke model, and further explored its neuroprotective mechanisms. Adult male ICR mice underwent photothrombotic ischemia surgery and were injected with NRG1 beginning 30 min after ischemia. Cylinder and grid walking tests were performed to evaluate the forepaw function. In addition, the effect of NRG1 on neuronal damage/death (Cresyl violet, CV), neuronal nuclei (NeuN), nestin, doublecortin (DCX), myelin basic protein (MBP), non-phosphorylated neurofilaments (SMI-32), adenomatous polyposis coli (APC),...
Source: Experimental Neurology - January 23, 2023 Category: Neurology Authors: Mai Yin Cui Yan Qiong Fu Zhuo Li Li Yu Zheng Yi Yu Chan Zhang Yun Qi Zhang Bing Rui Gao Wu Yue Chen Yun-Lyul Lee Moo-Ho Won Min Liao Yong Jian Bai Hui Chen Source Type: research

Visualizing the kinetic power stroke that drives proton-coupled zinc(ii) transport
Nature advance online publication 22 June 2014. doi:10.1038/nature13382 Authors: Sayan Gupta, Jin Chai, Jie Cheng, Rhijuta D’Mello, Mark R. Chance & Dax Fu The proton gradient is a principal energy source for respiration-dependent active transport, but the structural mechanisms of proton-coupled transport processes are poorly understood. YiiP is a proton-coupled zinc transporter found in the cytoplasmic membrane of Escherichia coli. Its transport site receives protons from water molecules that gain access to its hydrophobic environment and transduces the energy of an inward proton gradient to drive Zn(ii) efflux...
Source: Nature AOP - June 22, 2014 Category: Research Authors: Sayan GuptaJin ChaiJie ChengRhijuta D’MelloMark R. ChanceDax Fu Tags: Letter Source Type: research