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Total 16 results found since Jan 2013.

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

Iron promotes neurological function recovery in mice with ischemic stroke through endogenous repair mechanisms
In this study, we first observed that changes in iron metabolism occured during neurological function recovery in the mice with distal middle cerebral artery occlusion (dMCAO). Our data showed that plasticity changes due to endogenous repair mechanisms resulted in improvements in cerebral cortex function. These changes involved gliosis, synaptic function reconstruction, remyelination, and activation of neural stem cells. In order to examine the potential role of iron, we synthesized liposomal-encapsulated deferoxamine (DFO) nanoparticles to further explore the effect and the mechanism of iron on the recovery of neurologica...
Source: Free Radical Biology and Medicine - February 24, 2022 Category: Biology Authors: Xin Guo Xiaofang Jin Kang Han Shaomeng Kang Siyu Tian Xin Lv Mudi Feng Huiwen Zheng Yong Zuo Guodong Xu Ming Hu Jing Xu Peiyuan Lv Yan-Zhong Chang Source Type: research

Neutrophil Extracellular Traps Exacerbate Ischemic Brain Damage
AbstractMost acute strokes are ischemic, and subsequent neuroinflammation promotes further damage leading to cell death but also plays a beneficial role by promoting cellular repair. Neutrophils are forerunners to brain lesions after ischemic stroke and exert elaborate functions. While neutrophil extracellular traps (NETs) possess a fundamental antimicrobial function within the innate immune system under physiological circumstances, increasing evidence indicates that NETosis, the release process of NETs, occurs in the pathogenic process of stroke. In this review, we focus on the processes of NET formation and clearance, th...
Source: Molecular Neurobiology - November 8, 2021 Category: Neurology Source Type: research

Epigenetic regulators of neuronal ferroptosis identify novel therapeutics for neurological diseases: HDACs, transglutaminases, and HIF prolyl hydroxylases.
Abstract A major thrust of our laboratory has been to identify how physiological stress is transduced into transcriptional responses that feed back to overcome the inciting stress or its consequences, thereby fostering survival and repair. To this end, we have adopted the use of an in vitro model of ferroptosis, a caspase-independent, but iron-dependent form of cell death (Dixon et al., 2012; Ratan, 2020). In this review, we highlight three distinct epigenetic targets that have evolved from our studies and which have been validated in vivo studies. In the first section, we discuss our studies of broad, pan-selecti...
Source: Neurobiology of Disease - October 27, 2020 Category: Neurology Authors: Rroji O, Kumar A, Karuppagounder SS, Ratan RR Tags: Neurobiol Dis Source Type: research

Things I know to be true 1 – We are all walking miracles
Back when I was child I genuinely believed that when my mother kissed my knee to make it better, she did actually do that. And as I grew older although that belief faded away in the light of the obvious ‘fact’ of the medical model, it never truly disappeared. Time and again I would reflect on what it meant to be healthy and when my own health challenges began in my mid-teens, some part of me always knew that my mother’s kiss held meaning. I remember being 16 years old and just about to sit ‘O’ levels, as they were then. I had been having a period for what must have been weeks and I was tired a...
Source: The Hysterectomy Association - June 25, 2020 Category: OBGYN Authors: Linda Parkinson-Hardman Tags: Health life miracle Source Type: news

Things I know to be true – We are all walking miracles
Back when I was child I genuinely believed that when my mother kissed my knee to make it better, she did actually do that. And as I grew older although that belief faded away in the light of the obvious ‘fact’ of the medical model, it never truly disappeared. Time and again I would reflect on what it meant to be healthy and when my own health challenges began in my mid-teens, some part of me always knew that my mother’s kiss held meaning. I remember being 16 years old and just about to sit ‘O’ levels, as they were then. I had been having a period for what must have been weeks and I was tired a...
Source: The Hysterectomy Association - June 25, 2020 Category: OBGYN Authors: Linda Parkinson-Hardman Tags: Health 3 principles life miracle Source Type: news

Dual-modality imaging of endothelial progenitor cells transplanted after ischaemic photothrombotic stroke
Publication date: Available online 2 November 2019Source: Life SciencesAuthor(s): Jie Ding, Yi Zhang, Cong-Xiao Wang, Pei-Cheng Li, Zhen Zhao, Chao Wang, Gao-Jun TengAbstractAimsStroke is a refractory cerebral blood circulation disorder. Endothelial progenitor cells (EPCs) participate in the repair and regeneration of vascular injury through the combination of cell replacement and bystander effects. Here, we evaluated the biological function of EPCs in treating a mouse model of cerebral ischaemic stroke, using dual-mode bioluminescence and magnetic resonance imaging to trace EPCs in vivo.Main methodsWe constructed a viral ...
Source: Life Sciences - November 4, 2019 Category: Biology Source Type: research

Intravenous Grafts of Human Amniotic Fluid-Derived Stem Cells Reduce Behavioral Deficits in Experimental Ischemic Stroke.
This study reports isolation of viable human amniotic fluid-derived stem cells, labeled with multimodal iron oxide nanoparticles, and its effect on focal cerebral ischemia-reperfusion injury in Wistar rats. Middle cerebral artery occlusion of 60 min followed by reperfusion for 1 h, 6 h, and 24 h was employed in the present study to produce ischemia and reperfusion-induced cerebral injury in rats. Tests were employed to assess the functional outcome of the sensorimotor center activity in the brain, through a set of modified neurological severity scores used to assess motor and exploratory capacity 24 h, 14, and 28 days afte...
Source: Cell Transplantation - June 3, 2019 Category: Cytology Authors: Sibov TT, Pavon LF, Cabral FR, Cunha IF, de Oliveira DM, de Souza JG, Marti LC, da Cruz EF, Malheiros JM, Paiva FF, Tannús A, de Oliveira SM, da Costa MDS, Dastoli PA, Mendonça JN, de Toledo SRC, Malheiros SMF, de Paiva Neto MA, Rego NBB, Moron AF, Cava Tags: Cell Transplant Source Type: research

Iron Metabolism and Brain Development in Premature Infants
Yafeng Wang1,2,3, Yanan Wu2, Tao Li1,2,3, Xiaoyang Wang2,4 and Changlian Zhu2,3* 1Department of Neonatology (NICU), Children’s Hospital Affiliated Zhengzhou University, Zhengzhou, China 2Henan Key Laboratory of Child Brain Injury, Institute of Neuroscience and Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China 3Department of Clinical Neuroscience, Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg, Sweden 4Department of Physiology, Sahlgrenska Academy, Institute of Neuroscience and Physiology, University of Got...
Source: Frontiers in Physiology - April 24, 2019 Category: Physiology Source Type: research

Iron released from reactive microglia by noggin improves myelin repair in the ischemic brain.
Abstract We previously reported that the bone morphogenetic protein (BMP) antagonist, noggin, improved the repair process with an increase in the reactive microglia/macrophage population in the ischemic brain. Since BMP plays a role in intracellular iron homeostasis via the hepcidin/ferroportin axis, and iron is required for myelination, this study was aimed to determine whether noggin affected iron status and remyelination in the brain following ischemic stroke. We further examined the effect of blocking the BMP/hepcidin pathway on reactive microglia (BV2) and myelination of oligodendroglial cells (MO3.13) to def...
Source: Neuropharmacology - January 30, 2018 Category: Drugs & Pharmacology Authors: Shin JA, Kim YA, Kim HW, Kim HS, Lee KE, Kang JL, Park EM Tags: Neuropharmacology Source Type: research

Plasma Metal Concentrations and Incident Coronary Heart Disease in Chinese Adults: The Dongfeng-Tongji Cohort
Conclusions: Our study suggested that incident CHD was positively associated with plasma levels of titanium and arsenic, and inversely associated with selenium. Additional research is needed to confirm these findings in other populations. https://doi.org/10.1289/EHP1521 Received: 22 December 2016 Revised: 17 September 2017 Accepted: 19 September 2017 Published: 19 October 2017 Address correspondence to T. Wu, or A. Pan, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hongkong Rd., Wuhan 430030, Hubei, China. Telephone: +86-27-83692347. Email: wut@mails.tjmu.edu.cn or p...
Source: EHP Research - October 20, 2017 Category: Environmental Health Authors: Daniil Lyalko Tags: Research Source Type: research