Exosomes from Bone Marrow Mesenchymal Stem Cells Can Alleviate Early Brain Injury After Subarachnoid Hemorrhage Through miRNA129-5p-HMGB1 Pathway

Stem Cells and Development, Ahead of Print.
Source: Stem Cells and Development - Category: Stem Cells Authors: Source Type: research

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Authors: Teng F, Yin Y, Guo J, Jiang M Abstract Calpain activation may have an important role in early brain injury (EBI) following subarachnoid hemorrhage (SAH). The present study investigated the effects of the calpastatin peptide, a cell-permeable peptide that functions as a potent inhibitor of calpain, on EBI in a rat SAH model. It was revealed that calpastatin peptide treatment significantly reduced SAH-induced body weight loss and neurological deficit at 72 h when compared with untreated SAH controls. Furthermore, the quantification of brain water content and the extravasation of Evans blue dye revealed a sig...
Source: Experimental and Therapeutic Medicine - Category: General Medicine Tags: Exp Ther Med Source Type: research
CONCLUSIONS The present study demonstrated that wogonoside prevents brain edema development and apoptosis of neurons in rats by promoting SIRT1 expression and suppression of p53 activation. Therefore, wogonoside has therapeutic potential for the treatment of edema and needs to be investigated further to completely define the mechanism involved. PMID: 32221271 [PubMed - in process]
Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
CONCLUSION Individuals with HAP during acute hospitalization have worse long-term prognosis and greater hospital resource utilization. Preventing HAP may be cost-effective and improve long-term recovery for individuals with TBI. Future studies should compare the effectiveness of different prophylaxis methods to prevent HAP. LEVEL OF EVIDENCE Prospective cohort study, level III.
Source: The Journal of Trauma: Injury, Infection, and Critical Care - Category: Orthopaedics Tags: ORIGINAL ARTICLES Source Type: research
AbstractThe present study was undertaken to explore the role of total flavones of Camellia (TFC) on cerebral injury following subarachnoid hemorrhage (SAH) in rats. We showed that the increase of malondialdehyde (MDA) level in brain tissues, leakages of neuron-specifc enolase (NSE) and lactate dehydrogenase (LDH) from brain tissues to serum at 48 h after SAH were significantly blocked by TFC treatment. Besides, TFC treatment could reduce brain edema and the Bax/Bcl-2 ratio in hippocampal tissues at mRNA and protein levels at 48 h after SAH. In addition, and the reduction of neurological scores at 7d after SAH were signific...
Source: Metabolic Brain Disease - Category: Neurology Source Type: research
Objective: Japan has the largest elderly population in the world. As data on the clinical outcomes in elderly patients with aneurysmal subarachnoid hemorrhage (aSAH), including those older than 80 years, are lacking, we analyzed the characteristics of 54,805 aSAH patients and recorded their treatments and clinical outcomes using a Japanese nationwide inpatient database. Methods: Using the Japanese Diagnostic Procedure Combination database, we identified aSAH patients aged 18 years or older who were hospitalized between July 1, 2010 and March 31, 2016.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Source Type: research
In this study, we aim to validate and compare the aneurysmal SAH grading scales in angiogram-negative SAH patients. There were 190 angiogram-negative SAH patients analyzed from January 2014 to December 2015. The outcomes were measured by delayed cerebral ischemia (DCI) and poor outcome (defined as modified Rankin Scale (mRS) 3-6 or 4-6). The predictive performance of the grading scales was assessed via evaluation of distribution, trend, association, and discrimination. In regard to the distribution, none of the patients were categorized as HAIR 8 and SAH score 8. Both grading scales indicated a significant trend between sc...
Source: Biomed Res - Category: Research Authors: Tags: Biomed Res Int Source Type: research
Abstract OBJECTIVE: The Subarachnoid Hemorrhage Early Brain Edema Score (SEBES) system measures cerebral edema on CT and can be used to predict outcome after subarachnoid hemorrhage (SAH). The authors developed a modified SEBES (SEBES 6c) and assessed whether it could predict outcome after SAH better than the SEBES. Furthermore, they verified the age dependency of these scores. METHODS: In this retrospective study, all patients with aneurysmal SAH in the period from January 2011 to February 2017 at a single institution were analyzed. The SEBES, which is based on the absence of visible sulci at two defined CT ...
Source: Journal of Neurosurgery - Category: Neurosurgery Authors: Tags: J Neurosurg Source Type: research
Background: Hyponatremia is a common complication after aneurysmal subarachnoid hemorrhage (aSAH). Previous studies have reported an association between hyponatremia and vasospasm, however whether hyponatremia directly contributes to the pathogenesis of cerebral vasospasm (CVS), or is a by-product is still unclear. The aim of this study was to explore an association between hyponatremia and CVS after aSAH, and evaluating the temporality of these 2 events. Methods: A retrospective study of consecutive patients with aSAH admitted to the Baylor St.
Source: Journal of Stroke and Cerebrovascular Diseases - Category: Neurology Authors: Source Type: research
SUMMARY: Intracranial aneurysms with subarachnoid hemorrhage lead to high morbidity and mortality. It is of critical importance to detect aneurysms, identify risk factors of rupture, and predict treatment response of aneurysms to guide clinical interventions. Artificial intelligence has received worldwide attention for its impressive performance in image-based tasks. Artificial intelligence serves as an adjunct to physicians in a series of clinical settings, which substantially improves diagnostic accuracy while reducing physicians’ workload. Computer-assisted diagnosis systems of aneurysms based on MRA and CTA using...
Source: American Journal of Neuroradiology - Category: Radiology Authors: Tags: ADULT BRAIN Source Type: research
Blood removal from cerebrospinal fluid (CSF) in post-subarachnoid hemorrhage patients may reduce the risk of related secondary brain injury. We formulated a computational fluid dynamics (CFD) model to investig...
Source: Cerebrospinal Fluid Research - Category: Neurology Authors: Tags: Research Source Type: research
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