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Condition: Hemorrhagic Stroke
Nutrition: Iron

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Total 103 results found since Jan 2013.

Deferoxamine Prevents Post-Stroke Memory Impairment in Female Diabetic Rats: Potential Links to Hemorrhagic Transformation and Ferroptosis
Am J Physiol Heart Circ Physiol. 2022 Dec 23. doi: 10.1152/ajpheart.00490.2022. Online ahead of print.ABSTRACTDiabetes increases the risk of post-stroke cognitive impairment (PSCI). Greater hemorrhagic transformation (HT) after stroke is associated with vasoregression and cognitive decline in male diabetic rats. Iron chelator deferoxamine (DFX) prevents vasoregression and improves outcomes. While diabetic female rats develop greater HT, its impact on post-stroke cerebrovascularization and cognitive outcomes remained unknown. We hypothesized that diabetes mediates pathological neovascularization, and DFX attenuates post-str...
Source: American Journal of Physiology. Heart and Circulatory Physiology - December 23, 2022 Category: Physiology Authors: Weiguo Li Yasir Abdul Raghavendar Chandran Sarah Jamil Rebecca A Ward Mohammed Abdelsaid Guangkuo Dong Susan C Fagan Adviye Ergul Source Type: research

Taurine attenuates neuronal ferroptosis by regulating GABA < sub > B < /sub > /AKT/GSK3 β/β-catenin pathway after subarachnoid hemorrhage
Free Radic Biol Med. 2022 Nov 16:S0891-5849(22)00965-0. doi: 10.1016/j.freeradbiomed.2022.11.003. Online ahead of print.ABSTRACTFerroptosis, characterized by lipid peroxidation and intracellular iron accumulation, has been reported to be involving in the pathophysiological of early brain injury (EBI) after subarachnoid hemorrhage (SAH). Although taurine reportedly yields neuroprotective effects in multiple central neurological diseases and can attenuated neuron damage after stroke, its role in EBI after SAH remains unclear. The present study indicated that taurine levels in cerebrospinal fluid were significantly reduced in...
Source: Free Radical Biology and Medicine - November 19, 2022 Category: Biology Authors: Chengli Liu Peibang He Yujia Guo Qi Tian Jianfeng Wang Guijun Wang Zhan Zhang Mingchang Li Source Type: research

Deferoxamine Prevents Neonatal Posthemorrhagic Hydrocephalus Through Choroid Plexus-Mediated Iron Clearance
AbstractPosthemorrhagic hydrocephalus occurs in up to 30% of infants with high-grade intraventricular hemorrhage and is associated with the worst neurocognitive outcomes in preterm infants. The mechanisms of posthemorrhagic hydrocephalus after intraventricular hemorrhage are unknown; however, CSF levels of iron metabolic pathway proteins including hemoglobin have been implicated in its pathogenesis. Here, we develop an animal model of intraventricular hemorrhage using intraventricular injection of hemoglobin at post-natal day 4 that results in acute and chronic  hydrocephalus, pathologic choroid plexus iron accumulation, ...
Source: Translational Stroke Research - October 29, 2022 Category: Neurology Source Type: research

Activation of HIF-1α/VEGF-A pathway by deferoxamine ameliorates retinal hypoxia in a rat subarachnoid hemorrhage model
Conclusions Our findings suggest that modulating the application of deferoxamine may offer therapeutic approaches to alleviate retinal complications after SAH.
Source: NeuroReport - October 6, 2022 Category: Neurology Tags: Degeneration and Repair Source Type: research

Comparison of Arterial Ischemic and Hemorrhagic Pediatric Stroke in Etiology, Risk Factors, Clinical Manifestations, and Prognosis
Conclusions Moyamoya disease/syndrome and arteriovenous malformation rapture are the most common cause of AIS and HS, respectively. Iron deficiency anemia was commonly found in childhood AIS. The time to diagnosis in both AIS and HS was delayed. The mortality rate in HS was higher than in AIS. Neurological deficits are seen in 70% of childhood AIS during the follow-up. One-third of the children in our study developed epilepsy, which generally responds to a single antiseizure medication. The recurrence rate of childhood stroke was low compared with adult stroke.
Source: Pediatric Emergency Care - September 1, 2022 Category: Emergency Medicine Tags: Original Articles Source Type: research

Astragaloside IV attenuates ferroptosis after subarachnoid hemorrhage via Nrf2/HO-1 signaling pathway
Subarachnoid hemorrhage (SAH) is a severe type of stroke featuring exceptionally high rate of morbidity and mortality due to the lack of effective management. Ferroptosis can be defined as a novel iron-dependent programmed cell death in contrast to classical apoptosis and necrosis. Astragaloside IV (AS-IV) is an active ingredient extracted from Astragalus membranaceus with established therapeutic effect on CNS diseases. However, the exact role of ferroptosis in Astragaloside IV-mediated neuroprotection after SAH is yet to be demonstrated. In the present study, the SAH model of SD male rats with endovascular perforation was...
Source: Frontiers in Pharmacology - August 19, 2022 Category: Drugs & Pharmacology Source Type: research

E-111 Analysis of intracerebral hemorrhage in n established mouse model
BackgroundKontos’ elucidated the theory that iron-mediated free radical production and subsequent oxidative damage was responsible for on-going cerebral degeneration within the infarct following ischemic stroke. The production of free radicals is likely tied to the generation of superoxide following reperfusion of the ischemic brain. Free radical production happens relatively soon after reperfusion but the time to oxidative damage of surrounding tissue is still unknown. It is well-established that ischemic stroke results in loss of autoregulation to cerebral tissues. Ischemic strokes have the potential to transform i...
Source: Journal of NeuroInterventional Surgery - July 23, 2022 Category: Neurosurgery Authors: Pendleton, N. Tags: SNIS 19th annual meeting electronic poster abstracts 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