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https://www.readbyqxmd.com/read/28440186/the-double-roles-of-the-prostaglandin-e2-ep2-receptor-in-intracerebral-hemorrhage
#1
Xu Luo, Qiquan Zhu, Jie Zhang, Qin Huang, Zongyi Xie, Yuan Cheng
Intracerebral hemorrhage (ICH), a subtype of stroke, brings high morbidity and mortality to human beings. Multiple studies indicate that neuroinflammation, excitotoxicity, oxidative stress, cytotoxicity resulted from the degradation products of blood clot play vital roles in ICH-induced secondary brain injury, which contributes to deterioration of neurological outcome. Prostaglandin E2 (PGE2), a type of prostanoids commonly up-regulated in these progresses, is known to modulate numerous cellular and molecular processes and involve in various diseases, including ICH, cerebral ischemic, Alzheimer's disease (AD) and amyotrophic lateral sclerosis (ALS) etc...
April 24, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28435271/recombinant-human-brain-derived-neurotrophic-factor-prevents-neuronal-apoptosis-in-a-novel-in-vitro-model-of-subarachnoid-hemorrhage
#2
Mingchang Li, Yuefei Wang, Wei Wang, Changlin Zou, Xin Wang, Qianxue Chen
Subarachnoid hemorrhage (SAH) is a hemorrhagic stroke with high mortality and morbidity. An animal model for SAH was established by directly injecting a hemolysate into the subarachnoid space of rats or mice. However, the in vitro applications of the hemolysate SAH model have not been reported, and the mechanisms remain unclear. In this study, we established an in vitro SAH model by treating cortical pyramidal neurons with hemolysate. Using this model, we assessed the effects of recombinant human brain-derived neurotrophic factor (rhBDNF) on hemolysate-induced cell death and related mechanisms...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28433650/long-noncoding-rna-malat1-is-a-potent-autophagy-inducer-protecting-brain-microvascular-endothelial-cells-against-oxygen-glucose-deprivation-reoxygenation-induced-injure-by-sponing-mir-26b-and-upregulating-ulk2-expression
#3
Zhijun Li, Jing Li, Na Tang
Brain microvascular endothelial cell (BMEC) injury induced by ischemia-reperfusion (I/R) is the initial stage of blood-brain barrier (BBB) disruption, which results in a poor prognosis in ischemic stroke patients. Autophagy has been shown to have protective effects on BMECs against cerebral ischemic insults. However, molecular mechanism of BMEC autophagy during I/R is unclear. Long noncoding RNAs (lncRNAs) are emerging as new factors involved in cell autophagy. LncRNA Malat1 is one of the most highly upregulated I/R or OGD/R-responsive endothelial lncRNA and plays a protective role in BMECs against cerebral ischemic insults...
April 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28430370/extremely-low-frequency-electromagnetic-field-elf-emf-reduces-oxidative-stress-and-improves-functional-and-psychological-status-in-ischemic-stroke-patients
#4
Natalia Cichoń, Michał Bijak, Elżbieta Miller, Joanna Saluk
As a result of ischaemia/reperfusion, massive generation of reactive oxygen species occurs, followed by decreased activity of antioxidant enzymes. Extremely low frequency electromagnetic fields (ELF-EMF) can modulate oxidative stress, but there are no clinical antioxidant studies in brain stroke patients. The aim of our study was to investigate the effect of ELF-EMF on clinical and antioxidant status in post-stroke patients. Fifty-seven patients were divided into two groups: ELF-EMF and non-ELF-EMF. Both groups underwent the same 4-week rehabilitation program...
April 21, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28424584/hif-1%C3%AE-overexpression-improves-transplanted-bone-mesenchymal-stem-cells-survival-in-rat-mcao-stroke-model
#5
Bingke Lv, Feng Li, Jianbang Han, Jie Fang, Limin Xu, Chengmei Sun, Tian Hua, Zhongfei Zhang, Zhiming Feng, Xiaodan Jiang
Bone mesenchymal stem cells (BMSCs) death after transplantation is a serious obstacle impacting on the outcome of cell therapy for cerebral infarction. This study was aimed to investigate whether modification of BMSCs with hypoxia-inducible factor 1α (Hif-1α) could enhance the survival of the implanted BMSCs. BMSCs were isolated from Wistar rats, and were infected with Hif-1α-GFP lentiviral vector or Hif-1α siRNA. The modified BMSCs were exposed to oxygen-glucose deprivation (OGD) condition, cellular viability and apoptosis were then assessed...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28401316/the-orally-active-noncompetitive-ampar-antagonist-perampanel-attenuates-focal-cerebral-ischemia-injury-in-rats
#6
Hong-Xia Niu, Jun-Zhe Wang, Dong-Liang Wang, Jun-Jie Miao, Hua Li, Zhi-Gang Liu, Xing Yuan, Wei Liu, Jing-Ru Zhou
Inhibition of ionotropic glutamate receptors (iGluRs) is a potential target of therapy for ischemic stroke. Perampanel is a potent noncompetitive α-amino-3-hydroxy-5-methyl-4-isoxazole propionate receptor (AMPAR) antagonist with good oral bioavailability and favorable pharmacokinetic properties. Here, we investigated the potential protective effects of perampanel against focal cerebral ischemia in a middle cerebral artery occlusion (MCAO) model in rats. Oral administration with perampanel significantly reduced MCAO-induced brain edema, brain infarct volume, and neuronal apoptosis...
April 11, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28399863/vectorized-nanodelivery-systems-for-ischemic-stroke-a-concept-and-a-need
#7
REVIEW
Andrés Da Silva-Candal, Bárbara Argibay, Ramón Iglesias-Rey, Zulema Vargas, Alba Vieites-Prado, Esteban López-Arias, Emilio Rodríguez-Castro, Iria López-Dequidt, Manuel Rodríguez-Yáñez, Yolanda Piñeiro, Tomás Sobrino, Francisco Campos, José Rivas, José Castillo
Neurological diseases of diverse aetiologies have significant effects on the quality of life of patients. The limited self-repairing capacity of the brain is considered to be the origin of the irreversible and progressive nature of many neurological diseases. Therefore, neuroprotection is an important goal shared by many clinical neurologists and neuroscientists. In this review, we discuss the main obstacles that have prevented the implementation of experimental neuroprotective strategies in humans and propose alternative avenues for the use of neuroprotection as a feasible therapeutic approach...
April 11, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28396009/molecular-mechanisms-of-brain-derived-neurotrophic-factor-in-neuro-protection-recent-developments
#8
REVIEW
Hailin Zhao, Azeem Alam, Chun-Yin San, Shiori Eguchi, Qian Chen, Qingquan Lian, Daqing Ma
Neuronal cell injury, as a consequence of acute or chronic neurological trauma, is a significant cause of mortality around the world. On a molecular level, the condition is characterized by widespread cell death and poor regeneration, which can result in severe morbidity in survivors. Potential therapeutics are of major interest, with a promising candidate being brain-derived neurotrophic factor (BDNF), a ubiquitous agent in the brain which has been associated with neural development and may facilitate protective and regenerative effects following injury...
April 7, 2017: Brain Research
https://www.readbyqxmd.com/read/28393932/anti-high-mobility-group-box-1-hmgb1-antibody-inhibits-hemorrhage-induced-brain-injury-and-improved-neurological-deficits-in-rats
#9
Dengli Wang, Keyue Liu, Hidenori Wake, Kiyoshi Teshigawara, Shuji Mori, Masahiro Nishibori
As one of the most lethal stroke subtypes, intracerebral hemorrhage (ICH) is acknowledged as a serious clinical problem lacking effective treatment. Available evidence from preclinical and clinical studies suggests that inflammatory mechanisms are involved in the progression of ICH-induced secondary brain injury. High mobility group box-1 (HMGB1) is a ubiquitous and abundant nonhistone DNA-binding protein, and is also an important proinflammatory molecule once released into the extracellular space from the nuclei...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28391015/administration-of-secretoneurin-is-protective-in-hypoxic-ischemic-neonatal-brain-injury-predominantly-in-the-hypoxic-only-hemisphere
#10
Anna Posod, Karina Wechselberger, Ruslan Iljitsch Stanika, Gerald J Obermair, Karina Wegleiter, Eva Huber, Martina Urbanek, Ursula Kiechl-Kohlendorfer, Elke Griesmaier
Neonatal brain injury is a problem of global importance. To date, no causal therapies are available. A substance with considerable therapeutic potential is the endogenous neuropeptide secretoneurin (SN), which has proven to be beneficial in adult stroke. The aim of this study was to assess its effect in neonatal hypoxic-ischemic brain injury models. In vitro, primary hippocampal neurons were pre-treated with vehicle, 1µg/ml, 10µg/ml, or 50µg/ml SN and subjected to oxygen-glucose deprivation (OGD) for six hours...
April 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/28391011/administration-of-sonic-hedgehog-protein-induces-angiogenesis-and-has-therapeutic-effects-after-stroke-in-rats
#11
Sheng-Cai Chen, Ming Huang, Quan-Wei He, Yan Zhang, Elvis Nana Opoku, Hang Yang, Hui-Juan Jin, Yuan-Peng Xia, Bo Hu
The Sonic hedgehog (Shh) signaling pathway is recapitulated in response to ischemic injury. Here, we investigated the clinical implications of Shh protein in the ischemic stroke and explored the underlying mechanism. Intracerebroventricular injection of Shh, Cyclopamine, or anti-vascular endothelial growth factor (VEGF) was performed immediately after permanent middle cerebral artery occlusion (pMCAO) surgery and lasted for 7days (d). Phosphate-buffered saline (PBS) was used as control. Neurological deficits and infarct volume were examined 7d after pMCAO...
April 5, 2017: Neuroscience
https://www.readbyqxmd.com/read/28389473/st2-il-33-dependent-microglial-response-limits-acute-ischemic-brain-injury
#12
Yuanyuan Yang, Huan Liu, Haiyue Zhang, Qing Ye, Jianyi Wang, Boyu Yang, Leilei Mao, Wen Zhu, Rehana K Leak, Bo Xiao, Binfeng Lu, Jun Chen, Xiaoming Hu
ST2, a member of the interleukin 1 receptor family, and its ligand interleukin 33 (IL-33) play critical roles in immune regulation and inflammatory responses. This study explores the roles of endogenous IL-33/ST2 signaling in ischemic brain injury and elucidates the underlying mechanisms of action. The expression of IL-33 rapidly increased in oligodendrocytes and astrocytes after 60 min transient middle cerebral artery occlusion (tMCAO). ST2 receptor deficiency exacerbated brain infarction 3d after tMCAO as well as distal permanent MCAO...
April 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28388366/ellagic-acid-protects-against-neuron-damage-in-ischemic-stroke-through-regulating-the-ratio-of-bcl-2-bax-expression
#13
Qing-Shan Liu, Ran Deng, Shuran Li, Xu Li, Keqin Li, Kebaituli Gulibanumu, Xueli Li, Rui Liu
To research the effects of ellagic acid (EA), a low molecular weight polyphenol, on neuron cells and function, and to evaluate whether EA can be safely utilized by humans as a functional food or therapeutic agent, an oxygen-glucose deprivation and reoxygenation (ODG/R) model in primary cultured rat cortical neurons were created in this work. Administration of EA significantly decreased the volume of cerebrum infarction and the neurological deficit scores of the rats; EA treatment also increased the number of Bcl-2-positive cells and the ratio of Bcl-2-positive to Bax-positive neurons in semidarkness zone near brain ischemic focus in the PCI model...
April 7, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28386082/nicotinamide-mononucleotide-attenuates-brain-injury-after-intracerebral-hemorrhage-by-activating-nrf2-ho-1-signaling-pathway
#14
Chun-Chun Wei, Yuan-Yuan Kong, Guo-Qiang Li, Yun-Feng Guan, Pei Wang, Chao-Yu Miao
Replenishment of NAD(+) has been shown to protect against brain disorders such as amyotrophic lateral sclerosis and ischemic stroke. However, whether this intervention has therapeutic effects in intracerebral hemorrhage (ICH) is unknown. In this study, we sought to determine the potential therapeutic value of replenishment of NAD(+) in ICH. In a collagenase-induced ICH (cICH) mouse model, nicotinamide mononucleotide (NMN), a key intermediate of nicotinamide adenine dinucleotide (NAD(+)) biosynthesis, was administrated at 30 minutes post cICH from tail vein to replenish NAD(+)...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28382610/the-role-of-mitochondrial-aldehyde-dehydrogenase-2-aldh2-in-neuropathology-and-neurodegeneration
#15
Che-Hong Chen, Amit U Joshi, Daria Mochly-Rosen
Aldehydes-induced toxicity has been implicated in many neurodegenerative diseases. Exposure to reactive aldehydes from (1) alcohol and food metabolism; (2) environmental pollutants, including car, factory exhausts, smog, pesticides, herbicides; (3) metabolism of neurotransmitters, amino acids and (4) lipid peroxidation of biological membrane from excessive ROS, all contribute to 'aldehydic load' that has been linked to the pathology of neurodegenerative diseases. In particular, the α, β-unsaturated aldehydes derived from lipid peroxidation, 4-hydroxynonenal (4-HNE), DOPAL (MAO product of dopamine), malondialdehyde, acrolein and acetaldehyde, all readily form chemical adductions with proteins, DNA and lipids, thus causing neurotoxicity...
December 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/28380673/acyl-ghrelin-improves-cognition-synaptic-plasticity-deficits-and-neuroinflammation-following-amyloid-beta-a%C3%AE-1-40-administration-in-mice
#16
Vanessa V Santos, Romana Stark, Daniel Rial, Henrique B Silva, Jacqueline A Bayliss, Moyra B Lemus, Jeffrey S Davies, Rodrigo A Cunha, Rui Daniel Prediger, Zane B Andrews
Ghrelin is a metabolic hormone that has neuroprotective actions in a number of neurological conditions including Parkinson's disease (PD), stroke and traumatic brain injury. Acyl ghrelin treatment in vivo and in vitro also shows protective capacity in Alzheimer's disease (AD). In this study, we used ghrelin knockout (KO) and their wildtype (WT) littermates to test whether or not endogenous ghrelin is protective in a mouse model of AD, in which human amyloid beta peptide (Aβ1-40 ) was injected into the lateral ventricles (icv)...
April 5, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28380672/randomized-clinical-trial-of-deep-brain-stimulation-for-post-stroke-pain
#17
Scott F Lempka, Donald A Malone, Bo Hu, Kenneth B Baker, Alexandria Wyant, John Ozinga, Ela B Plow, Mayur Pandya, Cynthia S Kubu, Paul J Ford, Andre G Machado
OBJECTIVE: The experience with deep brain stimulation (DBS) for pain is largely based on uncontrolled studies targeting the somatosensory pathways, with mixed results. We hypothesized that targeting limbic neural pathways would modulate the affective sphere of pain and alleviate suffering. METHODS: We conducted a prospective, double-blinded, randomized, placebo-controlled, crossover study of DBS targeting the ventral striatum/anterior limb of the internal capsule (VS/ALIC) in 10 patients with post-stroke pain syndrome...
April 5, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28379489/new-thrombolytic-strategy-providing-neuroprotection-in-experimental-ischemic-stroke-mmp10-alone-or-in-combination-with-tpa
#18
C Roncal, S Martinez de Lizarrondo, A Salicio, A Chevilley, J A Rodriguez, A Rosell, P O Couraud, B Weksler, J Montaner, D Vivien, J A Páramo, J Orbe
Aim: Considering that MMP-10 improves stroke injury, we have examined the therapeutic and protective effect of MMP10 and tPA/MMP10 as clot-dissolving and neuroprotective agent in an experimental model of ischemic stroke and studied in vitro the molecular pathways involved in MMP10-mediated effects. Methods and Results: Cerebral ischemia was induced by the local injection of thrombin into the middle cerebral artery followed by reperfusion with MMP10 (6.5µg/Kg) and tPA (10mg/Kg) alone or in combination with MMP10...
April 3, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28379220/long-term-consumption-of-fermented-rooibos-herbal-tea-offers-neuroprotection-against-ischemic-brain-injury-in-rats
#19
Olusiji Akinrinmade, Sylvester Omoruyi, Daneel Dietrich, Okobi Ekpo
Stroke is the second leading cause of death worldwide, affecting about 240 people a day in South Africa and leaving survivors with residual disabilities. At the moment, there is no clinically approved neuroprotective product for stroke but the consumption of plant polyphenols has been suggested to offer some protection against stroke. In this study, we investigated the effects of long-term consumption of fermented rooibos herbal tea (FRHT) on ischemia/reperfusion (I/R)-induced brain injury in adult male Wistar rats...
2017: Acta Neurobiologiae Experimentalis
https://www.readbyqxmd.com/read/28378105/effect-of-magnolol-on-cerebral-injury-and-blood-brain-barrier-dysfunction-induced-by-ischemia-reperfusion-in-vivo-and-in-vitro
#20
Xiaoyan Liu, Xiaoling Chen, Yuanjun Zhu, Kewei Wang, Yinye Wang
Magnolol, a neolignan compound isolated from traditional Chinese medicine Magnolia officinalis, has a potentially therapeutic influence on ischemic stroke. Previous studies have demonstrated that cerebral ischemia-reperfusion (I-R) and blood-brain barrier (BBB) are involved in the pathogeneses of stroke. Therefore, in vivo and in vitro studies were designed to investigate the effects of magnolol on I-R-induced neural injury and BBB dysfunction. In cerebral I-R model of mice, cerebral infarct volumes, brain water content, and the exudation of Evans blue were significantly reduced by intravenous injection with magnolol at the doses of 1...
April 4, 2017: Metabolic Brain Disease
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