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Condition: Hemorrhagic Stroke
Nutrition: Iron
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Infectious Diseases: Images in Clinical Medicine
Editor: V. Dimov, M.D., Cleveland ClinicHypoglossal Nerve Palsy during Meningococcal Meningitis. NEJM, 10/2014.Herpes Zoster Involving the S1 Dermatome. NEJM, 05/2014.Tinea Faciei. NEJM, 05/2014.Disseminated Cryptococcosis in a CLL patient. 05/2014.Scrofuloderma due to Mycobacterium tuberculosis. NEJM, 06/2012.Leonine Facies in Lepromatous Leprosy. NEJM, 04/2012.Intestinal Infestation with Ancylostoma ceylanicum. NEJM, 03/2012.Kerion celsi form of tinea capitis caused by a T-cell hypersensitivity reaction. NEJM, 03/2012.Eye can see a nest of worms! Thelazia callipaeda. Lancet, 03/2012.Madura Foot. NEJM, 01/2012.Paragonimia...
Source: Clinical Cases and Images - August 22, 2009 Category: General Medicine Tags: Images Infectious Diseases Source Type: news
Ferroptosis and its potential as a therapeutic target
Biochem Pharmacol. 2021 Feb 22:114486. doi: 10.1016/j.bcp.2021.114486. Online ahead of print.ABSTRACTFerroptosis is a recently defined form of programmed cell death that is different from apoptosis. It is an iron-dependent programmed cell death and the accumulation of lipid hydroperoxides to lethal levels make ferroptosis distinct. Ferroptosis can be effectively regulated by a number of cellular variables including iron content, amino acid uptake, polyunsaturated fatty acid incorporation, glutathione biosynthesis, and NADPH levels. A number of severe and common degenerative diseases in humans such as Parkinson's disease an...
Source: Biochemical Pharmacology - February 25, 2021 Category: Drugs & Pharmacology Authors: Hanshu Yuan Justin Pratte Charles Giardina Source Type: research
Baicalin Inhibits Ferroptosis in Intracerebral Hemorrhage
Intracerebral hemorrhage (ICH) is a subtype of stroke characterized by high mortality and disability rates. To date, the exact etiology of ICH-induced brain injury is still unclear. Moreover, there is no effective treatment to delay or prevent disease progression currently. Increasing evidence suggests that ferroptosis plays a dominant role in the pathogenesis of ICH injury. Baicalin is a main active ingredient of Chinese herbal medicine Scutellaria baicalensis. It has been reported to exhibit neuroprotective effects against ICH-induced brain injury as well as reduce iron deposition in multiple tissues. Therefore, in this ...
Source: Frontiers in Pharmacology - March 19, 2021 Category: Drugs & Pharmacology Source Type: research
Iron chelation suppresses secondary bleeding after intracerebral hemorrhage in angiotensin II-infused mice
CONCLUSION: Iron overload plays a key role in secondary bleeding after ICH in Ang II-induced hypertensive mice. Iron chelation during the process of Ang II-induced hypertension suppresses secondary bleeding after ICH.PMID:34346561 | DOI:10.1111/cns.13706
Source: CNS Neuroscience and Therapeutics - August 4, 2021 Category: Neuroscience Authors: Jie Wang Xiao-Qin Tang Min Xia Cheng-Cheng Li Chao Guo Hong-Fei Ge Yi Yin Bo Wang Wei-Xiang Chen Hua Feng Source Type: research
Dauricine alleviated secondary brain injury after intracerebral hemorrhage by upregulating GPX4 expression and inhibiting ferroptosis of nerve cells
In this study, we used the STRING protein database to predict the proteins that may be co-expressed with GPX4, and studied the ability of Dauricine(Dau) to up-regulate the expression of GPX4 against ferroptosis and neuroprotection after intracerebral hemorrhage in normal cells in vitro, glutathione peroxidase 4 (GPX4) knockdown cells and collagenase injection in vivo in mouse models of intracerebral hemorrhage. The results showed that glutathione reductase (GSR) was a possible co-expression protein with GPX4. Dau could up-regulate the expression of glutathione peroxidase 4 (GPX4) in intracerebral hemorrhage(ICH) model, nor...
Source: European Journal of Pharmacology - September 1, 2021 Category: Drugs & Pharmacology Authors: Chiwei Peng Xiang Fu Kaixuan Wang Ling Chen Beijiao Luo Ni Huang Yunfeng Luo Wei Chen Source Type: research
Current Applications of Susceptibility Weighted Images in Pediatric Neurological Diseases
ConclusionIts high susceptibility for blood products, iron depositions, and calcifications makes susceptibility-weighted imaging an important additional sequence for the diagnostic workup of pediatric brain pathologic abnormalities that should be routinely added in our department. Compared with conventional MRI sequences, susceptibility-weighted imaging may show lesions with better detail and higher sensitivity. Familiarity with the pediatric susceptibility-weighted imaging signal variance is essential to prevent misdiagnosis.
Source: QJM - October 1, 2021 Category: Internal Medicine Source Type: research
20-HETE Participates in Intracerebral Hemorrhage-Induced Acute Injury by Promoting Cell Ferroptosis
Intracerebral hemorrhage (ICH) is a highly fatal type of stroke that leads to various types of neuronal death. Recently, ferroptosis, a form of cell death resulting from iron-dependent lipid peroxide accumulation, was observed in a mouse ICH model. N-hydroxy-N′-(4-n-butyl-2-methylphenyl)-formamidine (HET0016), which inhibits synthesis of the arachidonic acid metabolite 20-hydroxyeicosatetraenoic acid (20-HETE), has shown a protective effect after ICH. However, the underlying mechanisms of the neuroprotective effect need further investigation. We explored whether 20-HETE participates in ICH-induced ferroptosis ex vivo by ...
Source: Frontiers in Neurology - November 12, 2021 Category: Neurology Source Type: research
P-017 Evaluation of radiofrequency-induced heating in an X-ray and MR-visible interventional catheter at 3.0 T
ConclusionsInitial immersion tests suggest that the worst-case scenario for RF-induced heating of our guide catheter prototype occurs at 95 cm. During the period of our tests, our prototype remained safely under the maximum permitted temperature rise of +2°C/hr of exposure. This study suggests that our guide catheter may be retained during an intra-procedural MRI without the safety risk of RF-induced device heating over time to the patient.Disclosures B. Kilbride: None. J. Massachi: None. S. Ahn: None. K. Mueller: None. C. Jordan: None. A. Losey: None. A. Martin: None. T. Moore: None. M. Wilson: None. S. Hetts: None.
Source: Journal of NeuroInterventional Surgery - July 26, 2021 Category: Neurosurgery Authors: Kilbride, B., Massachi, J., Ahn, S., Mueller, K., Jordan, C., Losey, A., Martin, A., Moore, T., Wilson, M., Hetts, S. Tags: Oral poster abstracts Source Type: research
The Fate of Erythrocytes after Cerebral Hemorrhage
AbstractAfter a cerebral hemorrhage (intracerebral, subarachnoid, and intraventricular), extravasated blood contributes to both initial brain injury, via physical disruption and mass effect, and secondary injury, through the release of potentially neurotoxic and pro-inflammatory factors such as hemoglobin, iron, and peroxiredoxin-2. Erythrocytes are a major blood component and are a source of such damaging factors. Erythrolysis after cerebral hemorrhage releases potential neurotoxins, contributing to brain injury and edema. Alternatively, erythrocyte phagocytosis via microglia or macrophages may limit the spill of neurotox...
Source: Translational Stroke Research - January 23, 2022 Category: Neurology Source Type: research
Carbon Monoxide Protects Neural Stem Cells Against Iron Overload by Modulating the Crosstalk Between Nrf2 and NF- κB Signaling
Neurochem Res. 2022 Mar 8. doi: 10.1007/s11064-022-03537-9. Online ahead of print.ABSTRACTAlthough accumulating evidences have demonstrated pro-survival effects of CO against various insults, the precise mechanism explaining how neural stem cells (NSCs) are protected by CO also remains largely unknown. Here we report CO pro-survival effect on NSCs against iron overload was comparable to that obtained with pharmacological inhibitors of reactive oxygen species (ROS). Its pro-survival effect was accompanied by the inhibition of ROS and subsequent inhibition of NF-κB which is mediated through nuclear factor erythroid 2-relate...
Source: Neurochemical Research - March 8, 2022 Category: Neuroscience Authors: Xie Zhengxing Hu Aiying Zhang Zongqiang Miao Zengli Source Type: research
Iron-Induced Hydrocephalus: the Role of Choroid Plexus Stromal Macrophages
In conclusion, stromal macrophages account for ~10% of all choroid plexus cells, with more in aged rats. Treatments targeting macrophages (minocycline and clodronate liposomes) are associated with reduced iron-induced hydrocephalus.
Source: Translational Stroke Research - May 11, 2022 Category: Neurology Source Type: research
