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Condition: Hemorrhagic Stroke
Nutrition: Iron

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Total 103 results found since Jan 2013.

Minocycline attenuates brain injury and iron overload after intracerebral hemorrhage in aged female rats.
Abstract Brain iron overload is involved in brain injury after intracerebral hemorrhage (ICH). There is evidence that systemic administration of minocycline reduces brain iron level and improves neurological outcome in experimental models of hemorrhagic and ischemic stroke. However, there is evidence in cerebral ischemia that minocycline is not protective in aged female animals. Since most ICH research has used male models, this study was designed to provide an overall view of ICH-induced iron deposits at different time points (1 to 28 days) in aged (18-month old) female Fischer 344 rat ICH model and to investig...
Source: Neurobiology of Disease - June 4, 2018 Category: Neurology Authors: Dai S, Hua Y, Keep RF, Novakovic N, Fei Z, Xi G Tags: Neurobiol Dis Source Type: research

Hemoglobin metabolism by-products are associated with an inflammatory response in patients with hemorrhagic stroke
Conclusion: Iron and heme are associated with a pro-inflammatory response in the central nervous system following hemorrhagic stroke, and protections against hemoglobin and heme are lacking within the human brain. Patient inflammatory profiles were associated with a poorer prognosis, and local anti-inflammatory responses appeared to have a protective role.
Source: Revista Brasileira de Terapia Intensiva - May 7, 2018 Category: Intensive Care Source Type: research

Beneficial Role of Neutrophils Through Function of Lactoferrin After Intracerebral Hemorrhage Basic Sciences
Conclusions—LTF delivered to the ICH-affected brain by infiltrating PMNs may assist in hematoma detoxification and represent a powerful potential target for the treatment of ICH.
Source: Stroke - April 23, 2018 Category: Neurology Authors: Xiurong Zhao, Shun–Ming Ting, Guanghua Sun, Meaghan Roy–O’Reilly, Alexis S. Mobley, Jesus Bautista Garrido, Xueping Zheng, Lidiya Obertas, Joo Eun Jung, Marian Kruzel, Jaroslaw Aronowski Tags: Translational Studies Original Contributions Source Type: research

Minocycline Effects on Intracerebral Hemorrhage-Induced Iron Overload in Aged Rats Basic Sciences
This study quantified brain iron levels after ICH with magnetic resonance imaging R2* mapping. The effect of minocycline on iron overload and ICH-induced brain injury in aged rats was also determined.Methods—Aged (18 months old) male Fischer 344 rats had an intracerebral injection of autologous blood or saline, and brain iron levels were measured by magnetic resonance imaging R2* mapping. Some ICH rats were treated with minocycline or vehicle. The rats were euthanized at days 7 and 28 after ICH, and brains were used for immunohistochemistry and Western blot analyses. Magnetic resonance imaging (T2-weighted, T2* gradient-...
Source: Stroke - March 26, 2018 Category: Neurology Authors: Shenglong Cao, Ya Hua, Richard F. Keep, Neeraj Chaudhary, Guohua Xi Tags: Basic Science Research, Intracranial Hemorrhage Original Contributions Source Type: research

Carotid Atheroma From Men Has Significantly Higher Levels of Inflammation and Iron Metabolism Enabled by Macrophages Clinical Sciences
Conclusions—Male patients with carotid atheroma had more advanced and ruptured lesions associated with significantly higher levels of inflammatory macrophage infiltration and high iron stores in the blood and in their plaques. These findings help to understand sex differences and iron metabolism in atherosclerosis and factors related to atheroma progression.
Source: Stroke - January 22, 2018 Category: Neurology Authors: Xi-Ming Yuan, Liam J. Ward, Claes Forssell, Nabeel Siraj, Wei Li Tags: Inflammation, Oxidant Stress, Pathophysiology, Proteomics, Atherosclerosis Original Contributions Source Type: research

Prevalence and Natural History of Superficial Siderosis Clinical Sciences
This study aimed to report the prevalence and natural history of SS in a population-based study.Methods—Brain magnetic resonance imaging scans from the MCSA (Mayo Clinic Study of Aging), a population-based study of residents 50 to 89 years of age in Olmsted County, Minnesota, were reviewed. Participants with imaging consistent with SS were identified from 2011 through 2016. An inverse probability weighting approach was used to convert our observed frequencies to population prevalence of SS. Additional data abstracted included amyloid positron emission tomography, Apolipoprotein E genotype, coexisting cerebral microbleeds...
Source: Stroke - November 27, 2017 Category: Neurology Authors: Michael Pichler, Prashanthi Vemuri, Alejandro A. Rabinstein, Jeremiah Aakre, Kelly D. Flemming, Robert D. Brown Jr, Neeraj Kumar, Kejal Kantarci, Walter Kremers, Michelle M. Mielke, David S. Knopman, Clifford R. Jack Jr, Ronald C. Petersen, Val Lowe, Jona Tags: Magnetic Resonance Imaging (MRI), Cerebrovascular Malformations, Intracranial Hemorrhage Original Contributions Source Type: research

Ferroptosis: A Regulated Cell Death Nexus Linking Metabolism, Redox Biology, and Disease
Publication date: 5 October 2017 Source:Cell, Volume 171, Issue 2 Author(s): Brent R. Stockwell, José Pedro Friedmann Angeli, Hülya Bayir, Ashley I. Bush, Marcus Conrad, Scott J. Dixon, Simone Fulda, Sergio Gascón, Stavroula K. Hatzios, Valerian E. Kagan, Kay Noel, Xuejun Jiang, Andreas Linkermann, Maureen E. Murphy, Michael Overholtzer, Atsushi Oyagi, Gabriela C. Pagnussat, Jason Park, Qitao Ran, Craig S. Rosenfeld, Konstantin Salnikow, Daolin Tang, Frank M. Torti, Suzy V. Torti, Shinya Toyokuni, K.A. Woerpel, Donna D. Zhang Ferroptosis is a form of regulated cell death characterized by the iron-dependent accumulation...
Source: Cell - October 29, 2017 Category: Cytology Source Type: research

Restless legs syndrome related to hemorrhage of a thoracic spinal cord cavernoma.
CONCLUSION/CLINICAL RELEVANCE: We hypothesize a possible involvement of the diencephalospinal pathway in the patient's RLS pathophysiology. A systematic study of focal lesions associated with RLS may contribute to improving our understanding of the pathophysiological mechanisms underlying this condition. The frequency of RLS associated with lesions of the spinal cord might be underestimated. Clinicians should be aware of spinal cord lesion-related RLS, especially as efficient treatments are available. PMID: 28899286 [PubMed - as supplied by publisher]
Source: Journal of Spinal Cord Medicine - September 14, 2017 Category: Orthopaedics Tags: J Spinal Cord Med Source Type: research

Intraspinal TLR4 activation promotes iron storage but does not protect neurons or oligodendrocytes from progressive iron-mediated damage.
Abstract Iron is essential for basic cellular functions but in excess is highly toxic. For this reason, free iron and iron storage are controlled in the periphery by elaborate regulatory mechanisms. In contrast, iron regulation in the central nervous system (CNS) is not well defined. Given that excess iron is present after trauma, hemorrhagic stroke and neurodegeneration, understanding normal iron regulation and promoting iron uptake in CNS pathology is crucial. Peripherally, toll-like receptor 4 (TLR4) activation promotes iron sequestration by macrophages. Notably, iron-rich sites of CNS pathology typically conta...
Source: Experimental Neurology - August 26, 2017 Category: Neurology Authors: Goldstein EZ, Church JS, Pukos N, Gottipati M, Popovich PG, McTigue DM Tags: Exp Neurol Source Type: research

Uptake and Toxicity of Hemin and Iron in Cultured Mouse Astrocytes.
Abstract Hemin is a breakdown product of the blood protein, hemoglobin and is responsible for much of the secondary damage caused following a hemorrhagic stroke. Hemin is toxic to cultured astrocytes and it is thought that this toxicity is due to iron that is liberated when hemin is degraded. However, free iron applied to astrocytes is not toxic and the reason for this discrepancy is unknown. The present study exposed primary astrocyte cultures from neonatal mice to hemin-iron (25 µM hemin) or non-hemin iron (25 µM ferric ammonium citrate; FAC) for 12 or 24 h. Perls' and Turnbull's staining, as well as measur...
Source: Neurochemical Research - December 22, 2015 Category: Neuroscience Authors: Owen JE, Bishop GM, Robinson SR Tags: Neurochem Res Source Type: research

Azheimer's Disease Therapeutics Targeted to the Control of Amyloid Precursor Protein Translation: Maintenance of Brain Iron Homeostasis.
Abstract The neurotoxicity of amyloid beta (Aβ), a major cleavage product of the amyloid precursor protein (APP), is enhanced by iron, as found in the amyloid plaques of Alzheimer's disease (AD) patients. By contrast, the long-known neuroprotective activity of APP is evident after α-secretase cleavage of the precursor to release sAPPα, and depends on the iron export actions of APP itself. The latter underlie its neurotrophic and protective effects in facilitating the homeostatic actions of ferroportin mediated-iron export. Thus APP-dependent iron export may alleviate oxidative stress by minimizing labile iron t...
Source: Biochemical Pharmacology - February 7, 2014 Category: Drugs & Pharmacology Authors: Bandyopadhyay S, Rogers JT Tags: Biochem Pharmacol Source Type: research

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