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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

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

Iron-loaded transferrin (Tf) is detrimental whereas iron-free Tf confers protection against brain ischemia by modifying blood Tf saturation and subsequent neuronal damage
The objective of this study was to obtain evidence on whether TSAT determines the impact of experimental ischemic stroke on brain damage and whether iron-free transferrin (apotransferrin, ATf)-induced reduction of TSAT is neuroprotective. We found that experimental ischemic stroke promoted an early extravasation of circulating iron-loaded transferrin (holotransferrin, HTf) to the ischemic brain parenchyma. In vitro, HTf was found to boost ROS production and to be harmful to primary neuronal cultures exposed to oxygen and glucose deprivation. In stroked rats, whereas increasing TSAT with exogenous HTf was detrimental, admin...
Source: Redox Biology - December 14, 2017 Category: Biology Source Type: research

Elabela-APJ axis attenuates cerebral ischemia/reperfusion injury by inhibiting neuronal ferroptosis
Free Radic Biol Med. 2023 Jan 18:S0891-5849(23)00009-6. doi: 10.1016/j.freeradbiomed.2023.01.008. Online ahead of print.ABSTRACTFerroptosis is a form of non-apoptotic cell death caused by iron-dependent peroxidation of lipids. It contributes to ischemic stroke-induced neuronal damage. Elabela (ELA), a novel endogenous ligand for Apelin receptor (APJ), regulates oxidative stress and exerts a protective role in cardiovascular disease. However, the effect of ELA-APJ axis on cellular ferroptosis in cerebral ischemia/reperfusion (I/R) remains elusive. The present study showed that ELA and APJ were expressed on neurons and incre...
Source: Free Radical Biology and Medicine - January 21, 2023 Category: Biology Authors: Pengfei Xu Lingqi Kong Chunrong Tao Yuyou Zhu Juan Cheng Wenyu Li Nan Shen Rui Li Chao Zhang Li Wang Yan Zhang Guoping Wang Xinfeng Liu Wen Sun Wei Hu Source Type: research

The neuroprotective effects of carvacrol on ischemia/reperfusion-induced hippocampal neuronal impairment by ferroptosis mitigation
ConclusionCarvacrol provides protection for hippocampal neurons against I/R in gerbils by inhibiting ferroptosis through increasing the expression of GPx4.Graphical abstract
Source: Life Sciences - August 29, 2019 Category: Biology 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