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https://www.readbyqxmd.com/read/28222508/chronic-lithium-treatment-in-a-rat-model-of-basal-forebrain-cholinergic-depletion-effects-on-memory-impairment-and-neurodegeneration
#1
Francesca Gelfo, Debora Cutuli, Annalisa Nobili, Paola De Bartolo, Marcello D'Amelio, Laura Petrosini, Carlo Caltagirone
Alzheimer's disease (AD) is an age-related neurodegenerative disorder with multifactorial etiopathogenesis, characterized by progressive loss of memory and other cognitive functions. A fundamental neuropathological feature of AD is the early and severe brain cholinergic neurodegeneration. Lithium is a monovalent cation classically utilized in the treatment of mood disorders, but recent evidence also advances a beneficial potentiality of this compound in neurodegeneration. Interestingly, lithium acts on several processes whose alterations characterize the brain cholinergic impairment at short and long term...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28214985/melatonin-alleviates-the-epilepsy-associated-impairments-in-hippocampal-ltp-and-spatial-learning-through-rescue-of-surface-glur2-expression-at-hippocampal-ca1-synapses
#2
Yue Ma, Xiaolong Sun, Juan Li, Ruihua Jia, Fang Yuan, Dong Wei, Wen Jiang
Epilepsy-associated cognitive impairment is common, and negatively impacts patients' quality of life. However, most antiepileptic drugs focus on the suppression of seizures, and fewer emphasize treatment of cognitive dysfunction. Melatonin, an indolamine synthesized primarily in the pineal grand, is reported to be neuroprotective against several central nervous system disorders. In this study, we investigated whether melatonin could reverse cognitive dysfunction in lithium-pilocarpine treated rats. Chronic treatment with melatonin (8 mg/kg daily for 15 days) after induction of status epilepticus significantly alleviated seizure severity, reduced neuronal death in the CA1 region of the hippocampus, improved spatial learning (as measured by the Morris water maze test), and reversed LTP impairments, compared to vehicle treatment...
February 18, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28214539/lumbee-traditional-medicine-neuroprotective-activities-of-medicinal-plants-used-to-treat-parkinson-s-disease-related-symptoms
#3
Aurélie de Rus Jacquet, Michael Timmers, Sin Ying Ma, Andrew Thieme, George P McCabe, Jay Hansford C Vest, Mary Ann Lila, Jean-Christophe Rochet
ETHNOPHARMACOLOGICAL RELEVANCE: Parkinson's disease (PD) is a neurodegenerative disorder characterized by a loss of dopaminergic neurons in the substantia nigra pars compacta and the presence in surviving neurons of Lewy body inclusions enriched with aggregated forms of the presynaptic protein α-synuclein (aSyn). Although current therapies provide temporary symptomatic relief, they do not slow the underlying neurodegeneration in the midbrain. In this study, we analyzed contemporary herbal medicinal practices used by members of the Lumbee tribe to treat PD-related symptoms, in an effort to identify safe and effective herbal medicines to treat PD...
February 15, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28198649/fatal-drownings-in-fiji
#4
Kathryn Murray, Peter Carter
Drowning is a newly comprehended public health concern in Fiji. Defined as "the process of experiencing respiratory impairment from submersions or immersion in liquid," drowning has been identified as one of Fiji's 5 leading causes of death for those aged 1 to 29 years. The aim of this article was to develop the most parsimonious model that can be used to explain the number of monthly fatal drowning cases in Fiji. Based on a cross-section of 187 drowning incidents from January 2012 to April 2015, this observational study found the number of monthly drownings in Fiji was significantly affected by monthly rainfall ( P = ...
January 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28188453/orexin-a-rescues-chronic-copper-dependent-behavioral-and-hsp90-transcriptional-alterations-in-the-ornate-wrasse-brain
#5
Merylin Zizza, Marcello Canonaco, Rosa Maria Facciolo
Recently, orexin (ORX)ergic system has gained great attention for its major neuroregulatory role on fish motor, circadian, feeding activities and above all during water toxic conditions. Fish are particularly sensitive to acute sublethal copper (Cu) concentrations while little is known about neurobehavioral data after chronic Cu exposure. For this work, the marine teleost ornate wrasse (Thalassoma pavo) was monitored for 21 days during exposure to a relatively low CuCl2 concentration (0.25 mg/l). In particular, at 1 day fish displayed moderate reductions (-32%) of feeding behaviors versus controls that decreased up to -94% at 21 days...
February 10, 2017: Neurotoxicity Research
https://www.readbyqxmd.com/read/28167117/protection-against-alcohol-induced-neuronal-and-cognitive-damage-by-the-ppar%C3%AE-receptor-agonist-pioglitazone
#6
Andrea Cippitelli, Esi Domi, Massimo Ubaldi, James C Douglas, Hong Wu Li, Gregory Demopulos, George Gaitanaris, Marisa Roberto, Paul D Drew, Cynthia J M Kane, Roberto Ciccocioppo
Binge alcohol drinking has emerged as a typical phenomenon in young people. This pattern of drinking, repeatedly leading to extremely high blood and brain alcohol levels and intoxication is associated with severe risks of neurodegeneration and cognitive damage. Mechanisms involved in excitotoxicity and neuroinflammation are pivotal elements in alcohol-induced neurotoxicity. Evidence has demonstrated that PPARγ receptor activation shows anti-inflammatory and neuroprotective properties. Here we examine whether treatment with the PPARγ agonist pioglitazone is beneficial in counteracting neurodegeneration, neuroinflammation and cognitive damage produced by binge alcohol intoxication...
February 3, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28131916/low-concentration-of-uncouplers-of-oxidative-phosphorylation-decreases-the-tnf-induced-endothelial-permeability-and-lethality-in-mice
#7
Vlada V Zakharova, Olga Yu Pletjushkina, Ivan I Galkin, Roman A Zinovkin, Boris V Chernyak, Dmitri V Krysko, Claus Bachert, Olga Krysko, Vladimir P Skulachev, Ekaterina N Popova
Mitochondrial dysfunctions occur in many diseases linked to the systemic inflammatory response syndrome (SIRS). Mild uncoupling of oxidative phosphorylation is known to rescue model animals from pathologies related to mitochondrial dysfunctions and overproduction of reactive oxygen species (ROS). To study the potential of SIRS therapy by uncoupling, we tested protonophore dinitrophenol (DNP) and a free fatty acid (FFA) anion carrier, lipophilic cation dodecyltriphenylphosphonium (C12TPP) in mice and in vitro models of SIRS...
January 26, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28130348/can-surf-lifeguards-perform-a-quality-cardiopulmonary-resuscitation-sailing-on-a-lifeboat-a-quasi-experimental-study
#8
Roberto Barcala-Furelos, Cristian Abelairas-Gomez, Jose Palacios-Aguilar, Ezequiel Rey, Javier Costas-Veiga, Sergio Lopez-Garcia, Antonio Rodriguez-Nunez
PURPOSE: Drowning is a high-priority public health problem around the world. The European Resuscitation Council Guidelines for Resuscitation 2015 put special emphasis on special environments like open waters. Stopping the drowning process as soon as possible and starting an early cardiopulmonary resuscitation (CPR) improve survival. Inflatable rescue boats (IRBs) are used around the world in the water rescue of drowning victims. Our objective was to test the quality of CPR performed by surf-lifeguards while sailing on an IRB...
January 27, 2017: Emergency Medicine Journal: EMJ
https://www.readbyqxmd.com/read/28116173/electroacupuncture-regulates-hippocampal-synaptic-plasticity-via-mir-134-mediated-limk1-function-in-rats-with-ischemic-stroke
#9
Weilin Liu, Jie Wu, Jia Huang, Peiyuan Zhuo, Yunjiao Lin, Lulu Wang, Ruhui Lin, Lidian Chen, Jing Tao
MircoRNAs (miRs) have been implicated in learning and memory, by regulating LIM domain kinase (LIMK1) to induce synaptic-dendritic plasticity. The study aimed to investigate whether miRNAs/LIMK1 signaling was involved in electroacupuncture- (EA-) mediated synaptic-dendritic plasticity in a rat model of middle cerebral artery occlusion induced cognitive deficit (MICD). Compared to untreatment or non-acupoint-EA treatment, EA at DU20 and DU24 acupoints could shorten escape latency and increase the frequency of crossing platform in Morris water maze test...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/28099851/a-molecular-and-cellular-context-dependent-role-for-ir76b-in-detection-of-amino-acid-taste
#10
Anindya Ganguly, Lisa Pang, Vi-Khoi Duong, Angelina Lee, Hanni Schoniger, Erika Varady, Anupama Dahanukar
Amino acid taste is expected to be a universal property among animals. Although sweet, bitter, salt, and water tastes have been well characterized in insects, the mechanisms underlying amino acid taste remain elusive. From a Drosophila RNAi screen, we identify an ionotropic receptor, Ir76b, as necessary for yeast preference. Using calcium imaging, we identify Ir76b(+) amino acid taste neurons in legs, overlapping partially with sweet neurons but not those that sense other tastants. Ir76b mutants have reduced responses to amino acids, which are rescued by transgenic expression of Ir76b and a mosquito ortholog AgIr76b...
January 17, 2017: Cell Reports
https://www.readbyqxmd.com/read/28077315/inhibition-of-inos-alleviates-cognitive-deficits-and-depression-in-diabetic-mice-through-downregulating-the-no-sgc-cgmp-pkg-signal-pathway
#11
Xiao Yan Zhou, Fang Zhang, Chang Jiang Ying, Jing Chen, Ling Chen, Jing Dong, Yue Shi, Mang Tang, Xiao Tong Hu, Zhi Hua Pan, Na Na Xu, Kui Yang Zheng, Ren Xian Tang, Yuan Jian Song
Diabetes mellitus often results in a number of complications involving impaired brain function, including cognitive deficits and depression. However, the potential mechanisms for diabetes-related cognitive deficits and depression are not fully understood. Neurons in the hippocampal, cortical and amygdala functional regions are more susceptible to damage during hyperglycemia. Neuroprotection in the brain can rescue cognitive deficits and depression induced by hyperglycemia. This study investigated the potential mechanisms underlying diabetes-related congnitive deficits and depression, determined whether the inflammatory factor inducible nitric oxide synthase (iNOS) and the nitric oxide (NO)/soluble guanylyl cyclases (sGC)/cyclic guanosine monophosphate (cGMP)/protein kinase G (PKG) pathway, play key roles in cognitive deficits and depression associated...
January 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28073379/tau-passive-immunization-inhibits-not-only-tau-but-also-a%C3%AE-pathology
#12
Chun-Ling Dai, Yunn Chyn Tung, Fei Liu, Cheng-Xin Gong, Khalid Iqbal
BACKGROUND: Accumulation of hyperphosphorylated tau protein is a histopathological hallmark of Alzheimer's disease (AD) and related tauopathies. Currently, there is no effective treatment available for these progressive neurodegenerative diseases. In recent years, tau immunotherapy has shown great potential in animal models. We report the effect of immunization with tau antibodies 43D against tau 6-18 and 77E9 against tau 184-195 on tau and amyloid-β (Aβ) pathologies and cognition in triple-transgenic (3×Tg)-AD mice at mild to moderate stages of the disease...
January 10, 2017: Alzheimer's Research & Therapy
https://www.readbyqxmd.com/read/28057529/genetic-inhibition-of-anaplastic-lymphoma-kinase-rescues-cognitive-impairments-in-neurofibromatosis-1-mutant-mice
#13
Joseph B Weiss, Sydney J Weber, Eileen Ruth S Torres, Tessa Marzulla, Jacob Raber
Heterozygous Neurofibromatosis 1 (NF1) loss of function mutations occur in approximately 90% of patients with neurofibromatosis. A major, disabling phenotypic consequence of reduced NF1 function is cognitive impairment; a possibly related behavioral phenotype is impaired sleep. Recent results in Drosophila have demonstrated a genetic interaction between Anaplastic Lymphoma Kinase (Alk) and NF1 for both associative learning and sleep. Inhibition of Alk improves associative learning and sleep in heterozygous NF1 mutant flies...
March 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28043267/-investigation-of-emergency-capacities-for-occupational-hazard-accidents-in-silicon-solar-cell-producing-enterprises
#14
D D Yang, J N Xu, B L Zhu
Objective: To investigate and analyze the influential factors of occupational hazard acci-dents, emergency facilities and emergency management in Silicon solar cell producing enterprises, then to pro-vide scientific strategies. Methods: The methods of occupationally healthy field investigating, inspecting of ven-tilation effectiveness, setup of emergency program and wearing chemical suit were used. Results: The mainly occupational hazard accidents factors in the process of Silicon solar cell producing included poisoning chemi-cals, high temperature, onizing radiation and some workplaces...
November 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28032667/caffeine-alleviates-progressive-motor-deficits-in-a-transgenic-mouse-model-of-spinocerebellar-ataxia
#15
Nélio Gonçalves, Ana T Simões, Rui S Prediger, Hirokazu Hirai, Rodrigo A Cunha, Luís Pereira de Almeida
OBJECTIVE: Machado-Joseph disease (MJD) is a neurodegenerative spinocerebellar ataxia (SCA) associated with an expanded polyglutamine tract within ataxin-3 for which there is currently no available therapy. We previously showed that caffeine, a non-selective adenosine receptor antagonist, delays the appearance of striatal damage resulting from expression of full-length mutant ataxin-3. Here we investigated the ability of caffeine to alleviate behavioral deficits and cerebellar neuropathology in transgenic mice with a severe ataxia resulting from expression of a truncated fragment of polyglutamine-expanded ataxin-3 in Purkinje cells...
December 29, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/28025042/quercetin-ameliorates-chronic-unpredicted-stress-mediated-memory-dysfunction-in-male-swiss-albino-mice-by-attenuating-insulin-resistance-and-elevating-hippocampal-glut4-levels-independent-of-insulin-receptor-expression
#16
Vineet Mehta, Arun Parashar, Arun Sharma, Tiratha Raj Singh, Malairaman Udayabanu
Chronic stress is associated with impaired neuronal functioning, altered insulin signaling, and behavioral dysfunction. Quercetin has shown neuroprotective and antidiabetic effects, besides modulating cognition and insulin signaling. Therefore, in the present study, we explored whether or not quercetin ameliorates stress-mediated cognitive dysfunction and explored the underlying mechanism. Swiss albino male mice were subjected to an array of unpredicted stressors for 21days, during which 30mg/kg quercetin treatment was given orally...
December 23, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/28004064/-secondary-hyperuricemia-in-chronic-renal-failure-promotes-vascular-calcification-in-rats
#17
Zhe Song, Yang Zhao, Xian Wang, Ming-Jiang Xu
The present study was aimed to explore the effects of hyperuricemia on vascular calcification in chronic renal failure (CRF) and the mechanisms. Adenine diet-induced CRF rat model was used. Twenty-three male 8-week-old Wistar rats were randomly divided into control group (Ctr, n = 5), CRF group (n = 8) and CRF plus allopurinol group (CRF + ALL, n = 10), and the rats were given standard diet plus standard drinking water, adenine diet plus standard drinking water and adenine diet plus allopurinol drinking for 6 weeks, respectively...
December 25, 2016: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28003243/interleukin-2-improves-amyloid-pathology-synaptic-failure-and-memory-in-alzheimer-s-disease-mice
#18
Sandro Alves, Guillaume Churlaud, Mickael Audrain, Kristin Michaelsen-Preusse, Romain Fol, Benoit Souchet, Jérôme Braudeau, Martin Korte, David Klatzmann, Nathalie Cartier
Interleukin-2 (IL-2)-deficient mice have cytoarchitectural hippocampal modifications and impaired learning and memory ability reminiscent of Alzheimer's disease. IL-2 stimulates regulatory T cells whose role is to control inflammation. As neuroinflammation contributes to neurodegeneration, we investigated IL-2 in Alzheimer's disease. Therefore, we investigated IL-2 levels in hippocampal biopsies of patients with Alzheimer's disease relative to age-matched control individuals. We then treated APP/PS1ΔE9 mice having established Alzheimer's disease with IL-2 for 5 months using single administration of an AAV-IL-2 vector...
December 20, 2016: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27984208/oral-administration-of-grape-seed-polyphenol-extract-restores-memory-deficits-in-chronic-cerebral-hypoperfusion-rats
#19
Chen Chen, Yake Zheng, Tianwen Wu, Chuanjie Wu, Xuan Cheng
Chronic cerebral hypoperfusion (CCH) has been recognized as an important cause of both vascular dementia and Alzheimer's disease (AD), the two most prominent neurodegenerative diseases causing memory impairment in the elderly. However, an effective therapy for CCH-induced memory impairment has not yet been established. Grape seed polyphenol extract (GSPE) has powerful antioxidant properties and protects neurons and glia during ischemic injury, but its potential use in the prevention of CCH-induced memory impairment has not yet been investigated...
December 14, 2016: Behavioural Pharmacology
https://www.readbyqxmd.com/read/27982458/risk-factors-for-long-term-post-traumatic-stress-disorder-among-medical-rescue-workers-appointed-to-the-2008-wenchuan-earthquake-response-in-china
#20
Ellen J Schenk, Jun Yuan, Lise D Martel, Guo-Qing Shi, Ke Han, Xing Gao
This study aims to determine the risk factors for clinically-significant post-traumatic stress disorder (PTSD) among Chinese medical rescue workers one year after the response to the Wenchuan earthquake on 12 May 2008. A sample of 337 medical workers who performed response work within the first three months of the event completed an online questionnaire, which included information on demographics, social support, the management and organisation of the disaster response, and an assessment of PTSD. Symptoms consistent with PTSD were prevalent in 17 per cent of the rescue workers...
December 16, 2016: Disasters
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