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Neuroprotective effect

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https://www.readbyqxmd.com/read/28731692/quinolinyl-nitrone-rp19-induces-neuroprotection-after-transient-brain-ischemia
#1
Maria Irene Ayuso, Emma Martinez-Alonso, Mourad Chioua, Alejandro Escobar-Peso, Rafael Gonzalo-Gobernado, Joan Montaner, José Marco-Contelles, Alberto Alcazar
There is a need to develop additional effective therapies for ischemic stroke. Nitrones, which were first developed as reactive oxygen species (ROS)-trapping compounds, have been proposed as neuroprotective agents for ischemic stroke, a ROS-related disorder. The previous reported ROS-trapping compound, quinolyl nitrone RP19, is here being assayed to induce neuroprotection to ischemia-reperfusion injury in three experimental ischemia models: (i), oxygen-glucose deprivation (OGD) on primary neuronal cultures; (ii), transient global cerebral ischemia in four-vessel occlusion model; and (iii), transient focal cerebral ischemia in middle cerebral artery occlusion (tMCAO) model...
July 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28731445/colivelin-ameliorates-impairments-in%C3%A2-cognitive-behaviors-and-synaptic-plasticity-in-app-ps1-transgenic-mice
#2
Meina Wu, Hui Shi, Yexin He, Li Yuan, Xuesong Qu, Jun Zhang, Zhaojun Wang, Hongyan Cai, Jinshun Qi
Alzheimer's disease (AD) is the most common cause of dementia, and effective therapeutics are lacking. Colivelin (CLN), a novel, strong humanin derivative, is effective in vitro in preventing cell death induced by AD-causative genes and amyloid-β protein (Aβ) even at a low concentration. We recently demonstrated that intrahippocampal injection of CLN prevents Aβ25-35-induced deficits in spatial memory and synaptic plasticity in normal rats. Here, we further observed the effects of chronically intranasally (i...
July 19, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731439/antihypertensive-treatment-is-associated-with-mri-derived-markers-of-neurodegeneration-and-impaired-cognition-a-propensity-weighted-cohort-study
#3
Jodi D Edwards, Joel Ramirez, Brandy L Callahan, Sheldon W Tobe, Paul Oh, Courtney Berezuk, Krista Lanctôt, Walter Swardfager, Sean Nestor, Alexander Kiss, Stephen Strother, Sandra E Black
BACKGROUND: Hypertension is an important risk factor for Alzheimer's disease (AD) and cerebral small vessel disease. Angiotensin converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) are common anti-hypertensive treatments, but have differential effects on cortical amyloid. OBJECTIVE: The objective of this study was to evaluate associations between anti-hypertensive treatment, brain volume, and cognition, using a propensity-weighted analysis to account for confounding by indication...
July 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731433/the-effects-of-cardiotrophin-1-on-early-synaptic-mitochondrial-dysfunction-and-synaptic-pathology-in-appswe-ps1de9-mice
#4
Dongmei Wang, Xiaozhuan Liu, Yumei Liu, Sanqiang Li, Chenying Wang
The coexistence of neuronal mitochondrial pathology and synaptic dysfunction is an early pathological feature of Alzheimer's disease (AD). Cardiotrophin-1 (CT-1) has been shown to exhibit impressive neuroprotective effects. Previous studies have shown positive effects of CT-1 on brain glucose metabolism and cognition in APPswe/PS1dE9 transgenic mice; however, little is known about the effects of CT-1 on early synaptic mitochondrial dysfunction and resultant synaptic pathology in the brain. In this study, 4-month-old transgenic mice with brain tissue-specific CT-1 expression were used alone or in combination with APPswe/PS1dE9 transgenic mice to evaluate the effect of CT-1 on synaptic mitochondrial dysfunction and resultant synaptic pathology, and cryptic memory deficits in the APPswe/PS1dE9 transgenic mice...
July 19, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28731183/paeoniflorin-exerts-neuroprotective-effects-against-glutamate%C3%A2-induced-pc12-cellular-cytotoxicity-by-inhibiting-apoptosis
#5
Ahong Chen, Hongyun Wang, Yuqin Zhang, Xiaoying Wang, Lishuang Yu, Wen Xu, Wei Xu, Yu Lin
Paeoniflorin (PF) is an active ingredient of Radix Paeoniae, which is known to exert neuroprotective effects. However, the mechanims behind the neuroprotective effects of PF are not yet fully understood. The apoptosis of neurons plays an important role in the cerebral ischemia-induced cascade response. This study aimed to investigate neuroprotective effects of PF against glutamate‑induced PC12 cellular cytotoxicity and to determine whether these effects are mediated via the inhibition of apoptosis in vitro and the activity of mitochondrial apoptosis-associated proteins in PC12 cells...
July 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28729690/functional-variation-of-shp-2-promoter-is-associated-with-preterm-birth-and-delayed-myelination-and-motor-development-in-preterm-infants
#6
So-Yeon Shim, Hye Jin Jeong, Hyo Jin Park, Eun Young Kwon, Bo Min Kim, Yang Ji Choi, Youn-Hee Choi, Su Jin Cho, Ji Ha Choi, Eun Ae Park
Src homology 2 domain-containing protein tyrosine phosphatase 2 (SHP-2) is a cytoplasmic tyrosine phosphatase that is highly expressed in hematopoietic cells and in the CNS and exerts opposite effects on signal transduction by exerting a neuroprotective or proapoptotic effect. Several mutations of SHP-2 have been found in children with myeloproliferative disorders or malignant leukemia, and some of these can affect brain development. In the present study, we aimed to identify and functionally characterize genetic variations in SHP-2 in 72 preterm and 58 full-term infants and to evaluate the effect of the variations on neurodevelopment in preterm infants...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729191/hypothermia-pretreatment-improves-cognitive-impairment-via-enhancing-synaptic-plasticity-in-a-traumatic-brain-injury-model
#7
Bingjin Liu, Lin Wang, Yun Cao, Weiqi Xu, Fangxiao Shi, Qing Tian, Xinwen Zhou
PosttraumatichypothermiaattenuatescognitivedeficitscausedbyTBIwhen it is administered at an early stage. However, little is known regarding the effect of hypothermia pretreatment on cognitive deficits one month after TBI. In the current study, the behavior test revealed that hypothermia pretreatment mitigates the learning and memory impairment induced by TBI in mice. Hypothermia treatment significantly increased the expression of PSD93, PSD95 and NR2B one month after TBI in the cortex and hippocampus compared with the normothermia group...
July 17, 2017: Brain Research
https://www.readbyqxmd.com/read/28729125/comparative-effects-of-vitamin-d-and-methylprednisolone-against-ischemia-reperfusion-injury-of-rabbit-spinal-cords
#8
Bora Gürer, Abdullah Karakoç, Pınar Kuru Bektaşoğlu, Hayri Kertmen, Mehmet Ali Kanat, Ata Türker Arıkök, Berrin İmge Ergüder, Mustafa Fevzi Sargon, Özden Çağlar Öztürk, Erhan Çelikoğlu
INTRODUCTION: Recent studies have demonstrated the neuroprotective and immunomodulatory effects of 1,25-dihydroxyvitamin D3 (calcitriol), but no previous study has examined these effects on spinal cord ischemia/reperfusion (I/R) injury. Therefore, the present study aimed to evaluate whether calcitriol protects the spinal cord from I/R injury. METHODS: Rabbits were randomized into four groups of eight animals: group 1 (laparotomy control), group 2 (ischemia control), group 3 (30mg/kg intraperitoneal methylprednisolone at surgery), and group 4 (0...
July 17, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28728462/increased-binding-potential-of-brain-adenosine-a-sub-1-sub-receptor-in-chronic-stages-of-patients-with-diffuse-axonal-injury-measured-with-1-methyl-sup-11-sup-c-8-dicyclopropylmethyl-1-methyl-3-propylxanthine-pet-imaging
#9
Shihori Hayashi, Motoki Inaji, Tadashi Nariai, Keiichi Oda, Muneyuki Sakata, Jun Toyohara, Kenji Ishii, Kiichi Ishiwata, Taketoshi Maehara
The positron emission tomography (PET) radioligand for adenosine A <sub>1</sub> receptor (A1R) [1-methyl- <sup>11</sup>C] 8-dicyclopropylmethyl-1-methyl-3-propylxanthine (MPDX) has recently been developed for human brain imaging. In the present study, we evaluated the alteration of the A1R in patients with diffuse axonal injury (DAI) in chronic stage <i>in vivo</i>. Ten patients with DAI (7 men and 3 women) were included in this study. Three PET examinations were sequentially performed to measure A1R binding with <sup>11</sup>C-MPDX, glucose metabolism with <sup>18</sup>F-fluorodeoxyglucose (FDG), and central benzodiazepine receptor binding with <sup>11</sup>C-flumazenil (FMZ), decreases of <sup>11</sup>C-FMZ uptake indicate neuronal loss...
July 20, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28728173/glucocorticoid-induced-leucine-zipper-protects-the-retina-from-light-induced-retinal-degeneration-by-inducing-bcl-xl-in-rats
#10
Ruiping Gu, Wenyi Tang, Boya Lei, Xinyi Ding, Cheng Jiang, Gezhi Xu
Purpose: The aim of the present study was to investigate the neuroprotective effects of glucocorticoid-induced leucine zipper (GILZ) in a light-induced retinal degeneration model and to explore the underlying mechanisms. Methods: Intravitreal injection of recombinant GILZ-overexpressing lentivirus (OE-GILZ-rLV) and short hairpin RNA targeting GILZ recombinant lentivirus (shRNA-GILZ-rLV) was performed to up- and downregulate retinal GILZ, respectively. Three days after stable transduction, rats were exposed to continuous bright light (5000 lux) for 2 days...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28726776/autophagosome-maturation-mediated-by-rab7-contributes-to-neuroprotection-of-hypoxic-preconditioning-against-global-cerebral-ischemia-in-rats
#11
Lixuan Zhan, Siyuan Chen, Kongping Li, Donghai Liang, Xinyong Zhu, Liu Liu, Zhiwei Lu, Weiwen Sun, En Xu
Autophagy disruption leads to neuronal damage in hypoxic-ischemic brain injury. Rab7, a member of the Rab GTPase superfamily, has a unique role in the regulation of autophagy. Hypoxic preconditioning (HPC) provides neuroprotection against transient global cerebral ischemia (tGCI). However, the underlying mechanisms remain poorly understood. Thus, the current study explored the potential molecular mechanism of the neuroprotective effect of HPC by investigating how Rab7 mediates autophagosome (AP) maturation after tGCI in adult rats...
July 20, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28725658/mesenchymal-stem-cells-overexpressing-interleukin-10-promote-neuroprotection-in-experimental-acute-ischemic-stroke
#12
Masataka Nakajima, Chikako Nito, Kota Sowa, Satoshi Suda, Yasuhiro Nishiyama, Aki Nakamura-Takahashi, Yuko Nitahara-Kasahara, Kiwamu Imagawa, Tohru Hirato, Masayuki Ueda, Kazumi Kimura, Takashi Okada
Interleukin (IL)-10 is a contributing factor to neuroprotection of mesenchymal stem cell (MSC) transplantation after ischemic stroke. Our aim was to increase therapeutic effects by combining MSCs and ex vivo IL-10 gene transfer with an adeno-associated virus (AAV) vector using a rat transient middle cerebral artery occlusion (MCAO) model. Sprague-Dawley rats underwent 90 min MCAO followed by intravenous administration of MSCs alone or IL-10 gene-transferred MSCs (MSC/IL-10) at 0 or 3 hr after ischemia reperfusion...
September 15, 2017: Molecular Therapy. Methods & Clinical Development
https://www.readbyqxmd.com/read/28725631/biological-activities-and-medicinal-properties-of-asafoetida-a-review
#13
REVIEW
Augustine Amalraj, Sreeraj Gopi
Ferula asafoetida Linn. is a main source of asafoetida, a strong, tenacious and sulfurous odor, and oleo-gum resin of medicinal and nutritional importance. Asafoetida has been consumed as a spice and a folk medicine for centuries. Recent studies have shown several promising activities particularly relaxant, neuroprotective, memory enhancing, digestive enzyme, antioxidant, antispasmodic, hypotensive, hepatoprotective, antimicrobial, anticarcinogenic, anticancer, anticytotoxicity, antiobesity, anthelmintic and antagonistic effect...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28724904/hypertonic-saline-infusion-suppresses-apoptosis-of-hippocampal-cells-in-a-rat-model-of-cardiopulmonary-resuscitation
#14
Xiang Zhou, Yong Liu, Yang Huang, ShuiBo Zhu, Jian Zhu, RongPing Wang
Hypertonic saline (HS) attenuates cerebral edema, improves microcirculation perfusion and alleviates inflammation. However, whether the beneficial effect of HS on neurological function after cardiopulmonary resuscitation (CPR) in rat model of asphyxial cardiac arrest (CA) is mediated via attenuating apoptosis of neurons is not known. We studied the neuroprotective effect of HS in rats after CA and CPR, and explored the likely underlying mechanisms. Animals were randomly assigned to 4 equal groups (n = 15 each) according to the different infusions administered during resuscitation: control (C), normal saline (NS), hypertonic saline (HS), and hydroxyethyl starch (HES) groups...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724203/huprine-x-attenuates-the-neurotoxicity-induced-by-kainic-acid-especially-brain-inflammation
#15
J Relat, B Pérez, P Camps, D Muñoz-Torrero, A Badia, M V Clos
Huprine X (HX) is a synthetic anticholinesterasic compound that exerts a potent inhibitory action on acetylcholinesterase (AChE) activity, an agonist effect on cholinergic receptors, neuroprotective activity in different neurotoxicity models in vivo and in vitro and cognition enhancing effects in non-transgenic (C57BL/6) and transgenic (3xTg-AD, APPswe) mice. In the present study, we assessed the ability of HX (0.8 mg/kg, 21 days) to prevent the damage induced by kainic acid (KA; 28 mg/kg) regarding apoptosis, glia reactivity and neurogenesis in mouse brain...
July 19, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28724200/effect-of-memantine-on-serum-levels-of-neuron-specific-enolase-and-on-the-glasgow-coma-scale-in-patients-with-moderate-traumatic-brain-injury
#16
Majid Mokhtari, Hossein Nayeb-Aghaei, Mehran Kouchek, Mir Mohammad Miri, Reza Goharani, Arash Amoozandeh, Sina Akhavan Salamat, Mohammad Sistanizad
Traumatic brain injury (TBI) is a major cause of disability and death globally. Despite significant progress in neuromonitoring and neuroprotection, pharmacological interventions have failed to generate favorable results. We examined the effect of memantine on serum levels of neuron-specific enolase (NSE), a marker of neuronal damage, and the Glasgow Coma Scale (GCS) in patients with moderate TBI. Patients were randomly assigned to the control group (who received standard TBI management) and the treatment group (who, alongside their standard management, received enteral memantine 30 mg twice daily for 7 days)...
July 19, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28724170/circulating-insulin-like-growth-factor-1-and-insulin-like-growth-factor-binding-protein-3-predict-three-months-outcome-after-ischemic-stroke
#17
Moritz Armbrust, Hans Worthmann, Reinhard Dengler, Helmut Schumacher, Ralf Lichtinghagen, Christoph Cyrill Eschenfelder, Matthias Endres, Martin Ebinger
Reports on neuroprotective effects of Insulin-like growth factor-1 (IGF-1) and Insulin-like growth factor binding protein-3 (IGFBP-3) in ischemic brain tissue are inconsistent. The aim of this study was to determine if plasma levels of IGF-1 and IGFBP-3 in acute stroke patients are indicative of 3 months functional outcome. Plasma levels were measured via chemiluminescence immunoassay in heparin blood samples of patients included in the EARLY trial (NCT00562588). Plasma samples were drawn on admission and 8 days post-stroke...
July 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28723922/temporal-progression-of-parp-activity-in-the-prph2-mutant-rd2-mouse-neuroprotective-effects-of-the-parp-inhibitor-pj34
#18
Ayse Sahaboglu, Alaa Sharif, Lili Feng, Enver Secer, Eberhart Zrenner, François Paquet-Durand
Peripherin (peripherin/rds) is a membrane-associated protein that plays a critical role in the morphogenesis of rod and cone photoreceptor outer segments. Mutations in the corresponding PRPH2 gene cause different types of retinal dystrophies characterized by a loss of photoreceptors. Over activation of poly-ADP-ribose polymerase (PARP) was previously shown to be involved in different animal models for hereditary retinal dystrophies. This includes the rd2 mouse, which suffers from a human homologous mutation in the PRPH2 gene...
2017: PloS One
https://www.readbyqxmd.com/read/28723268/assay-of-calcium-transients-and-synapses-in-rat-hippocampal-neurons-by-kinetic-image-cytometry-and-high-content-analysis-an-in-vitro-model-system-for-postchemotherapy-cognitive-impairment
#19
Patrick M McDonough, Natalie L Prigozhina, Ranor C B Basa, Jeffrey H Price
Postchemotherapy cognitive impairment (PCCI) is commonly exhibited by cancer patients treated with a variety of chemotherapeutic agents, including the endocrine disruptor tamoxifen (TAM). The etiology of PCCI is poorly understood. Our goal was to develop high-throughput assay methods to test the effects of chemicals on neuronal function applicable to PCCI. Rat hippocampal neurons (RHNs) were plated in 96- or 384-well dishes and exposed to test compounds (forskolin [FSK], 17β-estradiol [ES]), TAM or fulvestrant [FUL], aka ICI 182,780) for 6-14 days...
July 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28722682/activation-of-the-nrf2-are-signaling-pathway-by-probucol-contributes-to-inhibiting-inflammation-and-neuronal-apoptosis-after-spinal-cord-injury
#20
Zipeng Zhou, Chang Liu, Shurui Chen, Haosen Zhao, Kang Zhou, Wei Wang, Yajiang Yuan, Zhuo Li, Yue Guo, Zhaoliang Shen, Xifan Mei
The nuclear erythroid 2-related factor 2 (Nrf2)/antioxidant response element (ARE) signaling pathway plays an essential role in the cellular antioxidant and anti-inflammatory responses. Spinal cord injury (SCI) results in a massive release of inflammatory factors and free radicals, which seriously compromise nerve recovery and axon regeneration. In this study, we examined the efficacy of probucol on anti-inflammatory responses and functional recovery after SCI by activating the Nrf2/ARE signaling pathway. We also investigated the mechanism by which inflammation is inhibited in this process...
July 8, 2017: Oncotarget
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