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Condition: Hemorrhagic Stroke
Infectious Disease: Adenoviruses

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Total 25 results found since Jan 2013.

Nicotine Treatment Ameliorates Blood-Brain Barrier Damage After Acute Ischemic Stroke by Regulating Endothelial Scaffolding Protein Pdlim5
AbstractAnalysis of a National Institutes of Health (NIH) trial shows that cigarette smoking protected tissue plasminogen activator (tPA)-treated patients from hemorrhage transformation (HT); however, the underlying mechanism is not clear. Damage to the integrity of the blood-brain barrier (BBB) is the pathological basis of HT. Here, we investigated the molecular events of BBB damage after acute ischemic stroke (AIS) usingin vitro oxygen-glucose deprivation (OGD) andin vivo mice middle cerebral artery occlusion (MCAO) models. Our results showed that the permeability of bEND.3 monolayer endothelial cells was significantly i...
Source: Translational Stroke Research - May 26, 2023 Category: Neurology Source Type: research

Peroxisome Proliferator-Activated Receptor {beta}/{delta} Alleviates Early Brain Injury After Subarachnoid Hemorrhage in Rats Basic Sciences
Conclusions— PPARβ/’s overexpression may attenuate early brain injury after rats’ SAH administration, which reduces neural apoptosis possibly through blocking NF-B/MMP-9 pathway.
Source: Stroke - December 28, 2015 Category: Neurology Authors: Teng, Z., Jiang, L., Hu, Q., He, Y., Guo, Z., Wu, Y., Huang, Z., Cao, F., Cheng, C., Sun, X., Guo, Z. Tags: Animal Models of Human Disease, Cell Signaling/Signal Transduction, Cerebrovascular Disease/Stroke Basic Sciences Source Type: research

Canagliflozin Inhibits Human Endothelial Cell Proliferation and Tube Formation
In conclusion, the present study identified canagliflozin as a potent inhibitor of human EC proliferation. The anti-proliferative action of canagliflozin is observed in ECs isolated from both the venous and arterial circulation, and is partly due to the blockade of cyclin A expression. In addition, this study found that canagliflozin inhibits tube formation in cultured ECs and mouse aortic rings. Notably, these actions are specific for canagliflozin and not seen with other SGLT2 inhibitors. The ability of canagliflozin to exert these pleiotropic effects on EC function may contribute to both the adverse and salutary actions...
Source: Frontiers in Pharmacology - April 15, 2019 Category: Drugs & Pharmacology Source Type: research

Observational Study of Patients Hospitalized With Neurologic Events After SARS-CoV-2 Vaccination, December 2020-June 2021
Discussion All cases in this study were determined to have at least 1 risk factor and/or known etiology accounting for their neurologic syndromes. Our comprehensive clinical review of these cases supports the safety of mRNA COVID-19 vaccines.
Source: Neurology Clinical Practice - May 25, 2023 Category: Neurology Authors: Kim, C. Y., McNeill, E. N., Young, C., King, F., Clague, M., Caldwell, M., Boruah, A., Zucker, J., Thakur, K. T. Tags: Autoimmune diseases, Post-infectious, Inclusion, Diversity, Equity, Anti-racism, and Social Justice (IDEAS), COVID-19 Research Article Source Type: research

MST1 Suppression Reduces Early Brain Injury by Inhibiting the NF- κB/MMP-9 Pathway after Subarachnoid Hemorrhage in Mice.
Conclusions: The current findings indicate that MST1 participates in SAH-induced BBB disruption and white matter fiber damage via the downstream NF-κB-MMP-9 signaling pathway. Therefore, MST1 antagonists may serve as a novel therapeutic target to prevent early brain injury in SAH patients. PMID: 30018671 [PubMed - in process]
Source: Behavioural Neurology - July 20, 2018 Category: Neurology Authors: Qu J, Zhao H, Li Q, Pan P, Ma K, Liu X, Feng H, Chen Y Tags: Behav Neurol Source Type: research

Induction of Brain Arteriovenous Malformation Through CRISPR/Cas9-Mediated Somatic Alk1 Gene Mutations in Adult Mice
AbstractBrain arteriovenous malformation (bAVM) is an important risk factor for intracranial hemorrhage. The pathogenesis of bAVM has not been fully understood. Animal models are important tools for dissecting bAVM pathogenesis and testing new therapies. We have developed several mouse bAVM models using genetically modified mice. However, due to the body size, mouse bAVM models have some limitations. Recent studies identified somatic mutations in sporadic human bAVM. To develop a feasible tool to create sporadic bAVM in rodent and animals larger than rodent, we made tests using the CRISPR/Cas9 technique to induce somatic g...
Source: Translational Stroke Research - December 3, 2018 Category: Neurology Source Type: research

Effects of GDNF-Transfected Marrow Stromal Cells on Rats with Intracerebral Hemorrhage
Objective: The present study aimed to investigate the effects of Mesenchymal stem cells/glial cell line derived neurotrophic factor (MSCs/GDNF) transplantation on nerve reconstruction in rats with intracerebral hemorrhage. Methods: GDNF transduction to MSCs was using adenovirus vector pAdEasy-1-pAdTrack-CMV prepared. Intracerebral hemorrhage (ICH) was induced by injection of collagenase and heparin into the caudate putamen. At the third day after a collagenase-induced ICH, adult male SD rats were randomly divided into saline group, MSCs group and MSCs/GDNF group.
Source: Journal of Stroke and Cerebrovascular Diseases - June 23, 2019 Category: Neurology Authors: Li Deng, Xiaoqing Gao, Guangbi Fan, Chaoxian Yang Source Type: research

Neuritin improves the neurological functional recovery after experimental intracerebral hemorrhage in mice
In this study, ICH was induced in C57BL/6 J mice by injection of collagenase VII, while the overexpression of Nrn in the striatum was induced by an adeno-associated virus serotype 9 (AAV9) vector. We found that compared with GFP-ICH mice, Nrn-ICH mice showed improved performance in the corner, cylinder and forelimb tests after ICH, and showed less weight loss and more rapid weight recovery. Overexpression of Nrn reduced brain lesions, edema, neuronal death and white matter and synaptic integrity dysfunction caused by ICH. Western blot results showed that phosphorylated PERK and ATF4 were significantly inhibited, while phos...
Source: Neurobiology of Disease - May 31, 2021 Category: Neurology Authors: Junmei Lu Zhaoyang Li Qianru Zhao Dongdong Liu Yan-Ai Mei Source Type: research

Recognizing Vaccine-Induced Immune Thrombotic Thrombocytopenia
CONCLUSIONS: Vaccine-induced immune thrombotic thrombocytopenia is a serious complication of vaccination that is not feasible to anticipate or prevent. When the patient presents with sustained headache, neurologic symptoms/signs, abdominal pain, dyspnea, or limb pain/swelling beginning 5–30 days post vaccination, platelet count and d-dimer must be measured, and imaging for thrombosis performed. Confirmation of vaccine-induced immune thrombotic thrombocytopenia diagnosis should be ordered (platelet factor 4/polyanion enzyme-linked immunosorbent assay; platelet factor 4–enhanced platelet activation testing) as treatm...
Source: Critical Care Medicine - December 20, 2021 Category: Emergency Medicine Tags: Online Review Article Source Type: research

Molecular and pathological characterization of natural co-infection of poultry farms with the recently emerged Leucocytozoon caulleryi and chicken anemia virus in Egypt
AbstractIn the summers of 2018 and 2019, a disease outbreak stroke 25 broiler chicken farms and 3 broiler breeder farms in different Governorates in Egypt. The disease caused a mortality rate ranging from 3.2 to 9%. Postmortem examination showed petechial hemorrhage in the breast and thigh muscles, thymus gland, and peritoneal cavity and extensive hemorrhages in the kidneys. A total of 140 liver, kidney, lung, skeletal muscles, thymus, and spleen samples were collected. Twenty-eight pooled samples were created and examined by PCR and histopathological examination to identify the causative pathogens. All collected samples w...
Source: Tropical Animal Health and Production - February 8, 2022 Category: Veterinary Research Source Type: research

Regulation of Ncbe in the Choroid Plexus of Mice after Hemorrhage-Induced Hydrocephalus
FASEB J. 2022 May;36 Suppl 1. doi: 10.1096/fasebj.2022.36.S1.R3405.ABSTRACTThe choroid plexus (CP) is a small tissue located inside brain ventricles. It is responsible for the production of most of the cerebrospinal fluid (CSF); approximately 500 mL of CSF per day in the adult human [1, 2]. CSF production occurs as a net result of transcellular movement of salt and water, carried out by various cellular transporters. Ncbe is a sodium-coupled bicarbonate transporter located in the basolateral membrane of the choroid plexus epithelial (CPE) cells. It transports Na+ and HCO3 - into the cell in exchange for Cl- . Ncbe is the m...
Source: Pharmacological Reviews - May 13, 2022 Category: Drugs & Pharmacology Authors: Laura Ø Johnsen Kathrine A Friis Laura B Ry ø Jacob G Mikkelsen Thomas B Lindhardt Rasmus W Knopper Brian Hansen Jeppe Praetorius Helle H Damkier Source Type: research