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https://www.readbyqxmd.com/read/28926473/hydrogen-gas-attenuates-sevoflurane-neurotoxicity-through-inhibiting-nuclear-factor-%C3%AE%C2%BA-light-chain-enhancer-of-activated-b-cells-signaling-and-proinflammatory-cytokine-release-in-neonatal-rats
#1
Yiwei Shi, Gang Wang, Jinyuan Li, Wenli Yu
Anesthesia neurotoxicity in developing brain has gained increasing attention. However, knowledge regarding its mitigating strategies remains scant. Sevoflurane, a commonly used anesthetic, is responsible for learning and memory deficits in neonates. Molecular hydrogen is reported to be a potential neuroprotective agent because of its antioxidative and anti-inflammatory activities. This study aimed to investigate the effect of hydrogen gas on sevoflurane neurotoxicity. The newborn rats were treated with sevoflurane and/or hydrogen gas for 2 h...
September 18, 2017: Neuroreport
https://www.readbyqxmd.com/read/28925896/allopurinol-old-drug-new-indication-in-neonates
#2
Kim V Annink, Axel R Franz, Jan B Derks, Mario Rüdiger, Frank van Bel, Manon J N L Benders
BACKGROUND: Hypoxic-ischemic encephalopathy (HIE) is an important cause of neonatal mortality and neurological morbidity, even despite hypothermia treatment. Neuronal damage in these infants is partly caused by the production of superoxides via the xanthine-oxidase pathway and concomitant free radical formation. Allopurinol is a xanthine-oxidase inhibitor and can potentially reduce the formation of these superoxides that lead to brain damage in HIE. METHODS: The aim of this review is to provide an overview of the animal and clinical data about the neuroprotective effect of allopurinol in HIE and the relevant mechanisms leading to brain injury in HIE...
September 18, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28925883/novel-therapeutics-in-glaucoma-management
#3
Claudio Bucolo, Chiara Bianca Maria Platania, Filippo Drago, Michele Reibaldi, Vincenza Bonfiglio, Teresio Avitabile, Maurizio Uva
Glaucoma is a progressive optic neuropathy characterized by retinal ganglion cell death and alterations of visual field. Elevated intraocular pressure (IOP) is considered the main risk factor of glaucoma, even though other factors cannot be ruled out, such as epigenetic mechanisms. An overview of the ultimate promising experimental drugs to manage glaucoma has been provided. In particular, we have focused on purinergic ligands, KATP channel activators, gases (nitric oxide, carbon monoxide and hydrogen sulfide), non-glucocorticoid steroidal compounds, neurotrophic factors, PI3K/Akt activators, citicoline, histone deacetylase inhibitors, cannabinoids, dopamine and serotonin receptors ligands, small interference RNA, and Rho kinase inhibitors...
September 15, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28925729/advances-toward-multifunctional-cholinesterase-and-%C3%AE-amyloid-aggregation-inhibitors
#4
Dawid Panek, Tomasz Wichur, Justyna Godyń, Anna Pasieka, Barbara Malawska
The emergence of a multitarget design approach in the development of new potential anti-Alzheimer's disease agents has resulted in the discovery of many multifunctional compounds focusing on various targets. Among them the largest group comprises inhibitors of both cholinesterases, with additional anti-β-amyloid aggregation activity. This review describes recent advances in this research area and presents the most interesting compounds reported over a 2-year span (2015-2016). The majority of hybrids possess heterodimeric structures obtained by linking structurally active fragments interacting with different targets...
September 19, 2017: Future Medicinal Chemistry
https://www.readbyqxmd.com/read/28925298/new-natural-barrigenol-like-triterpenoid-isolated-from-the-husks-of-xanthoceras-sorbifolia-bunge
#5
Da Wang, Bin Yu, Chuming Chen, Jie Duan, Donghua Di, Xin Xiong, Yiren Yang, Huiyuan Gao
The Xanthoceras sorbifolia Bunge husks were known for their abundant triterpenoids resource, which contributed to many bioactivities, such as antitumor, antiinflammatory and neuroprotection. The present study has led to the purification of a new triterpenoid saponin, 21β-O-acetyl-xanthohuskiside A (1), together with six known barrigenol derivatives (2-7), whose structures were authenticated on the basis of NMR, HR-MS, IR spectrum and acid hydrolysis experiment. Compound 7 showed more noteworthy cytotoxicity towards three human tumour cell lines (HCT-116, HepG-2 and U87-MG) than other compounds...
September 19, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28924870/efficacy-of-a-novel-sigma-1-receptor-antagonist-for-oxaliplatin-induced-neuropathy-a-randomized-double-blind-placebo-controlled-phase-iia-clinical-trial
#6
Jordi Bruna, Sebastián Videla, Andreas A Argyriou, Roser Velasco, Jesús Villoria, Cristina Santos, Cristina Nadal, Guido Cavaletti, Paola Alberti, Chiara Briani, Haralabos P Kalofonos, Diego Cortinovis, Mariano Sust, Anna Vaqué, Thomas Klein, Carlos Plata-Salamán
This trial assessed the efficacy of MR309 (a novel selective sigma-1 receptor ligand previously developed as E-52862) in ameliorating oxaliplatin-induced peripheral neuropathy (oxaipn). A discontinuous regimen of MR309 (400 mg/day, 5 days per cycle) was tested in patients with colorectal cancer receiving FOLFOX in a phase II, randomized, double-blind, placebo-controlled, multicenter clinical trial. Outcome measures included changes in 24-week quantitative measures of thermal sensitivity and total neuropathy score...
September 18, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28924549/potassium-2-1-hydroxypentyl-benzoate-attenuates-neuronal-apoptosis-in-neuron-astrocyte-co-culture-system-through-neurotrophy-and-neuroinflammation-pathway
#7
Dongmei Liu, Man Zhang, Xianfang Rong, Jiang Li, Xiaoliang Wang
Potassium 2-(1-hydroxypentyl)-benzoate (d,l-PHPB), a new drug candidate for ischemic stroke at the phase II clinic trial, has been shown to protect neurons by inhibiting oxidative injury and reducing neuron apoptosis in previous studies. But the mechanisms of d,l-PHPB remain to be studied. In this study, a neuron-astrocytes co-culture system was used to elucidate the roles of astrocytes in neuroprotection of d,l-PHPB under oxygen-glucose deprivation/reoxygenation (OGD/R) condition. Our data showed that d,l-PHPB reduced neuronal apoptosis in mono-culture system and this effect was enhanced in neuron-astrocyte co-culture system under the OGD/R condition...
September 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28923597/targeting-demyelination-via-%C3%AE-secretases-promoting-sapp%C3%AE-release-to-enhance-remyelination-in-central-nervous-system
#8
Gemma Llufriu-Dabén, Alex Carrete, Elena Chierto, Jo Mailleux, Emeline Camand, Anne Simon, Tim Vanmierlo, Christiane Rose, Bernadette Allinquant, Jerome J A Hendriks, Charbel Massaad, Delphine Meffre, Mehrnaz Jafarian-Tehrani
Remyelination is an endogenous regenerative process of myelin repair in the central nervous system (CNS) with limited efficacy in demyelinating disorders. As strategies enhancing endogenous remyelination become a therapeutic challenge, we have focused our study on α-secretase-induced sAPPα release, a soluble endogenous protein with neuroprotective and neurotrophic properties. However, the role of sAPPα in remyelination is not known. Therefore, we investigated the remyelination potential of α-secretase-induced sAPPα release following CNS demyelination in mice...
September 15, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28923363/anti-inflammatory-effects-of-flavonoids-in-neurodegenerative-disorders
#9
Carmela Spagnuolo, Stefania Moccia, Gian Luigi Russo
Neuroinflammation is one of the main mechanisms involved in the progression of several neurodegenerative diseases, such as Parkinson, Alzheimer, multiple sclerosis, amyotrophic lateral sclerosis and others. The activation of microglia is the main feature of neuroinflammation, promoting the release of pro-inflammatory cytokines and resulting in the progressive neuronal cell death. Natural compounds, such as flavonoids, possess neuroprotective potential probably related to their ability to modulate the inflammatory responses involved in neurodegenerative diseases...
September 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28923278/can-adjunctive-therapies-augment-the-efficacy-of-endovascular-thrombolysis-a-potential-role-for-activated-protein-c
#10
REVIEW
Arun Paul Amar, Abhay P Sagare, Zhen Zhao, Yaoming Wang, Amy R Nelson, John H Griffin, Berislav V Zlokovic
In the management of acute ischemic stroke, vessel recanalization correlates with functional status, mortality, cost, and other outcome measures. Thrombolysis with intravenous tissue plasminogen activator has many limitations that restrict its applicability, but recent advances in the development of mechanical thrombectomy devices as well as improved systems of stroke care have resulted in greater likelihood of vessel revascularization. Nonetheless, there remains substantial discrepancy between rates of recanalization and rates of favorable outcome...
September 15, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28923118/hypothermia-for-encephalopathy-in-low-and-middle-income-countries-helix-study-protocol-for-a-randomised-controlled-trial
#11
Sudhin Thayyil, Vania Oliveira, Peter J Lally, Ravi Swamy, Paul Bassett, Mani Chandrasekaran, Jayashree Mondkar, Sundaram Mangalabharathi, Naveen Benkappa, Arasar Seeralar, Mohammod Shahidullah, Paolo Montaldo, Jethro Herberg, Swati Manerkar, Kumutha Kumaraswami, Chinnathambi Kamalaratnam, Vinayagam Prakash, Rema Chandramohan, Prathik Bandya, Mohammod Abdul Mannan, Ranmali Rodrigo, Mohandas Nair, Siddarth Ramji, Seetha Shankaran
BACKGROUND: Therapeutic hypothermia reduces death and disability after moderate or severe neonatal encephalopathy in high-income countries and is used as standard therapy in these settings. However, the safety and efficacy of cooling therapy in low- and middle-income countries (LMICs), where 99% of the disease burden occurs, remains unclear. We will examine whether whole body cooling reduces death or neurodisability at 18-22 months after neonatal encephalopathy, in LMICs. METHODS: We will randomly allocate 408 term or near-term babies (aged ≤ 6 h) with moderate or severe neonatal encephalopathy admitted to public sector neonatal units in LMIC countries (India, Bangladesh or Sri Lanka), to either usual care alone or whole-body cooling with usual care...
September 18, 2017: Trials
https://www.readbyqxmd.com/read/28922852/magnesium-sulfate-prevents-neurochemical-and-long-term-behavioral-consequences-of-neonatal-excitotoxic-lesions-comparison-between-male-and-female-mice
#12
Ismaël Daher, Bérénice Le Dieu-Lugon, Nathalie Dourmap, Matthieu Lecuyer, Lauriane Ramet, Cathy Gomila, Jérôme Ausseil, Stéphane Marret, Philippe Leroux, Vincent Roy, Salah El Mestikawy, Stéphanie Daumas, Bruno Gonzalez, Isabelle Leroux-Nicollet, Carine Cleren
Magnesium sulfate (MgSO4) administration to mothers at risk of preterm delivery is proposed as a neuroprotective strategy against neurological alterations such as cerebral palsy in newborns. However, long-term beneficial or adverse effects of MgSO4 and sex-specific sensitivity remain to be investigated. We conducted behavioral and neurochemical studies of MgSO4 effects in males and females, from the perinatal period to adolescence in a mouse model of cerebral neonatal lesion. The lesion was produced in 5-day-old (P5) pups by ibotenate intracortical injection...
October 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28922851/%C3%AE-endosulfine-arpp-19e-expression-in-a-rat-model-of-stroke
#13
Rupal I Mehta, Natalia Tsymbalyuk, Svetlana Ivanova, Jesse A Stokum, Kyoon Woo, Volodymyr Gerzanich, J Marc Simard
In nutrient restricted environments, the yeast endosulfines Igo1/2 are activated via TORC1 inhibition and function critically to initiate and coordinate the cellular stress response that promotes survival. We examined expression of αEnsa, the mammalian homolog of yeast endosulfines, in rat stroke. Prominent neuronal upregulation of αEnsa was identified in 3 patterns within the ischemic gradient: (1) neurons in GFAP-/HSF1+ cortex showed upregulation and near-complete nuclear translocation of αEnsa protein within hours of ischemic onset; (2) neurons in GFAP+/HSF1+ cortex showed upregulation in cytoplasm and nuclei that persisted for days; (3) neurons in GFAP+/HSF1- cortex showed delayed cytosolic-only upregulation that persisted for days...
October 1, 2017: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/28922722/molecular-mechanisms-of-anticancer-effects-of-glucosamine
#14
REVIEW
Fatemeh Zahedipour, Razieh Dalirfardouei, Gholamreza Karimi, Khadijeh Jamialahmadi
Glucosamine is an amino sugar that is produced naturally in human body. It is an essential carbohydrate component of many cellular glycoproteins, glycolipids, and glycosaminoglycans (GAGs). This popular over-the-counter supplement is also found in the exoskeleton of crustaceans. Glucosamine and its derivatives have a long history in medicine for inflammatory conditions specially to relieve arthritis. This dietary supplement has numerous biological and pharmacological properties, including anti-inflammatory, antioxidant, anti-aging, anti-fibrotic, neuroprotective and cardioprotective activities...
September 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28922719/baicalein-as-a-potent-neuroprotective-agent-a-review
#15
REVIEW
Kandhasamy Sowndhararajan, Ponnuvel Deepa, Minju Kim, Se Jin Park, Songmun Kim
In recent times, neurodegenerative diseases are the most challenging global health problems. Neuronal cell death or damage is a key factor for many neurodegenerative disorders. Therefore, there has been a growing interest in the development of effective neuroprotective agents, especially from natural sources. In particular, phytochemicals have shown high efficacy with low side effects in various in vitro and in vivo studies. In the various phytoconstituents, flavonoids are important bioactive products and mainly found in various vegetables and fruits...
September 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28921630/metabolic-assessment-of-a-migraine-model-using-relaxation-enhanced-1-h-spectroscopy-at-ultrahigh-field
#16
Nastaren Abad, Jens T Rosenberg, Tangi Roussel, Dillon C Grice, Michael G Harrington, Samuel C Grant
PURPOSE: This study evaluates biochemical imbalances in a rat model that reflects dysfunctional pathways in migraine. The high sensitivity and spectral dispersion available to (1) H MRS at 21.1 T expands metabolic profiling in this migraine model to include lactate (Lac), taurine (Tau), aspartate, and Gly-a mixture of glycine, glutamine, and glutamate. METHODS: Sprague-Dawley male rats were administered in situ an intraperitoneal injection of nitroglycerin (NTG) to induce the migraine analogue or saline as a control...
September 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28921587/dimethyl-fumarate-treatment-after-traumatic-brain-injury-prevents-depletion-of-antioxidative-brain-glutathione-and-confers-neuroprotection
#17
Tobias Krämer, Theresa Grob, Lutz Menzel, Tobias Hirnet, Eva Griemert, Konstantin Radyushkin, Serge C Thal, Axel Methner, Michael K E Schaefer
Dimethyl fumarate (DMF) is an immunomodulatory therapeutic for multiple sclerosis and psoriasis with neuroprotective potential. Its mechanism of action involves activation of the antioxidant pathway regulator Nuclear factor erythroid 2-related factor 2 (Nrf2) thereby increasing synthesis of the cellular antioxidant glutathione (GSH). The objective of this study was to investigate whether post-traumatic DMF treatment is beneficial after experimental traumatic brain injury (TBI). Adult C57Bl/6 mice were subjected to controlled cortical impact followed by oral administration of DMF (80 mg/kg body weight) or vehicle at 3 h, 24 h, 48 h and 72 h after the inflicted TBI...
September 16, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28919923/revealing-topics-and-their-evolution-in-biomedical-literature-using-bio-dtm-a-case-study-of-ginseng
#18
Qian Chen, Ni Ai, Jie Liao, Xin Shao, Yufeng Liu, Xiaohui Fan
BACKGROUND: Valuable scientific results on biomedicine are very rich, but they are widely scattered in the literature. Topic modeling enables researchers to discover themes from an unstructured collection of documents without any prior annotations or labels. In this paper, taking ginseng as an example, biological dynamic topic model (Bio-DTM) was proposed to conduct a retrospective study and interpret the temporal evolution of the research of ginseng. METHODS: The system of Bio-DTM mainly includes four components, documents pre-processing, bio-dictionary construction, dynamic topic models, topics analysis and visualization...
2017: Chinese Medicine
https://www.readbyqxmd.com/read/28919537/neuroprotective-effect-of-curcumin-i-in-copper-induced-dopaminergic-neurotoxicity-in-rats-a-possible-link-with-parkinson-s-disease
#19
Abdellatif Abbaoui, Hicham Chatoui, Omar El Hiba, Halima Gamrani
Numerous findings indicate an involvement of heavy metals in the neuropathology of several neurodegenerative disorders, especially Parkinson's disease (PD). Previous studies have demonstrated that Copper (Cu) exhibits a potent neurotoxic effect on dopaminergic neurons and triggers profound neurobehavioral alterations. Curcumin is a major component of Curcuma longa rhizomes and a powerful medicinal plant that exerts many pharmacological effects. However, the neuroprotective action of curcumin on Cu-induced dopaminergic neurotoxicity is yet to be investigated...
September 14, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28919536/neuroprotective-effect-of-5%C3%A9-androst-3%C3%AE-5-6%C3%AE-triol-on-retinal-ganglion-cells-in-a-rat-chronic-ocular-hypertension-model
#20
Yan-Qiu Chen, Shu-Min Zhong, Shu-Ting Liu, Feng Gao, Fang Li, Yuan Zhao, Xing-Huai Sun, Yanying Miao, Zhongfeng Wang
Previous studies have demonstrated that 5ɑ-androst-3β,5,6β-triol (Triol), a synthesized steroid compound, showed notable neuroprotective effect in cultured cortical neurons. In the present study, we explored whether and how Triol have neuroprotective effect on retinal ganglion cells(RGCs) in a chronic ocular hypertension(COH) rat model. COH model was produced by injecting superparamagnetic iron oxide micro-beads into the anterior chamber, and Triol was administrated(4.8μg/100g, i.p., once daily for 4 weeks)...
September 14, 2017: Neuroscience Letters
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