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https://www.readbyqxmd.com/read/28321180/multiple-kinases-involved-in-the-nicotinic-modulation-of-gamma-oscillations-in-the-rat-hippocampal-ca3-area
#1
JianGang Wang, XiaoLong He, Fangli Guo, XiangLin Cheng, Yali Wang, XiaoFang Wang, ZhiWei Feng, Martin Vreugdenhil, ChengBiao Lu
Neuronal synchronization at gamma band frequency (20-80 Hz, γ oscillations) is closely associated with higher brain function, such as learning, memory and attention. Nicotinic acetylcholine receptors (nAChRs) are highly expressed in the hippocampus, and modulate hippocampal γ oscillations, but the intracellular mechanism underlying such modulation remains elusive. We explored multiple kinases by which nicotine can modulate γ oscillations induced by kainate in rat hippocampal area CA3 in vitro. We found that inhibitors of cyclic AMP dependent kinase (protein kinase A, PKA), protein kinase C (PKC), N-methyl-D-aspartate receptor (NMDA) receptors, Phosphoinositide 3-kinase (PI3K) and extracellular signal-related kinases (ERK), each individually could prevent the γ oscillation-enhancing effect of 1 μM nicotine, whereas none of them affected baseline γ oscillation strength...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28315274/role-of-%C3%AF-1-receptors-in-learning-and-memory-and-alzheimer-s-disease-type-dementia
#2
Tangui Maurice, Nino Goguadze
The present chapter will review the role of σ1 receptor in learning and memory and neuroprotection , against Alzheimer's type dementia. σ1 Receptor agonists have been tested in a variety of pharmacological and pathological models of learning impairments in rodents these last past 20 years. Their anti-amnesic effects have been explained by the wide-range modulatory role of σ1 receptors on Ca(2+) mobilizations, neurotransmitter responses, and particularly glutamate and acetylcholine systems, and neurotrophic factors...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28293176/muscarinic-receptors-are-responsible-for-the-cholinergic-modulation-of-projection-neurons-in-the-song-production-brain-nucleus-ra-of-zebra-finches
#3
Wei Meng, Songhua Wang, Lihua Yao, Nan Zhang, Dongfeng Li
Songbirds are a useful model for the study of learned vocal behavior in vertebrates. The robust nucleus of the arcopallium (RA) is a premotor nucleus in the vocal motor pathway. It receives excitatory synaptic inputs from the anterior forebrain pathway. RA also receives cholinergic inputs from the ventral paleostriatum of the basal forebrain. Our previous study showed that carbachol, a non-selective cholinergic receptor agonist, modulates the electrophysiology of RA projection neurons (PNs), indicating that cholinergic modulation of RA may play an important role in song production...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28270757/effectiveness-of-a-novel-qigong-meditative-movement-practice-for-impaired-health-in-flight-attendants-exposed-to-second-hand-cigarette-smoke
#4
Peter Payne, Steven Fiering, James C Leiter, David T Zava, Mardi A Crane-Godreau
This single-arm non-randomized pilot study explores an intervention to improve the health of flight attendants (FA) exposed to second-hand cigarette smoke prior to the smoking ban on commercial airlines. This group exhibits an unusual pattern of long-term pulmonary dysfunction. We report on Phase I of a two-phase clinical trial; the second Phase will be a randomized controlled trial testing digital delivery of the intervention. Subjects were recruited in the Northeastern US; testing and intervention were administered in 4 major cities...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28258047/mobile-phone-apps-for-smoking-cessation-quality-and-usability-among-smokers-with-psychosis
#5
Joelle C Ferron, Mary F Brunette, Pamela Geiger, Lisa A Marsch, Anna M Adachi-Mejia, Stephen J Bartels
BACKGROUND: Smoking is one of the top preventable causes of mortality in people with psychotic disorders such as schizophrenia. Cessation treatment improves abstinence outcomes, but access is a barrier. Mobile phone apps are one way to increase access to cessation treatment; however, whether they are usable by people with psychotic disorders, who often have special learning needs, is not known. OBJECTIVE: Researchers reviewed 100 randomly selected apps for smoking cessation to rate them based on US guidelines for nicotine addiction treatment and to categorize them based on app functions...
March 3, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/28217868/an-anti-nicotinic-cognitive-challenge-model-using-mecamylamine-in-comparison-with-the-anti-muscarinic-cognitive-challenge-using-scopolamine
#6
A C Baakman, R Alvarez-Jimenez, R Rissmann, E S Klaassen, J Stevens, S C Goulooze, J Burger, E L Swart, J M A van Gerven, G J Groeneveld
INTRODUCTION: The muscarinic acetylcholine receptor antagonist scopolamine is often used for proof-of-pharmacology studies with pro-cognitive compounds. From a pharmacological point of view, it would seem more rational to use a nicotinic rather than a muscarinic anticholinergic challenge to prove pharmacology of a nicotinic acetylcholine receptor agonist. This study aims to characterize a nicotinic anticholinergic challenge model using mecamylamine and to compare it to the scopolamine model...
February 20, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28213446/acetylcholine-release-in-prefrontal-cortex-promotes-gamma-oscillations-and-theta-gamma-coupling-during-cue-detection
#7
W M Howe, H J Gritton, N Lusk, Erik A Roberts, Vaughn L Hetrick, Joshua D Berke, Martin Sarter
The capacity for using external cues to guide behavior ("cue detection") constitutes an essential aspect of attention and goal-directed behavior. The cortical cholinergic input system, via phasic increases in prefrontal acetylcholine release, plays an essential role in attention by mediating such cue detection. However, the relationship between cholinergic signaling during cue detection and neural activity dynamics in prefrontal networks remains unclear. Here we combined sub-second measures of cholinergic signaling, neurophysiological recordings, and cholinergic receptor blockade to delineate the cholinergic contributions to prefrontal oscillations during cue detection in rats...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28209560/from-the-experience-of-interactivity-and-entertainment-to-lower-intention-to-smoke-a-randomized-controlled-trial-and-path-analysis-of-a-web-based-smoking-prevention-program-for-adolescents
#8
Georges Elias Khalil, Hua Wang, Karen Sue Calabro, Natasha Mitra, Ross Shegog, Alexander V Prokhorov
BACKGROUND: Web-based programs for smoking prevention are being increasingly used with some success among adolescents. However, little is known about the mechanisms that link the experience of such programs to intended nicotine or tobacco control outcomes. OBJECTIVE: Based on the experiential learning theory and extended elaboration likelihood model, this study aimed to evaluate the impact of a Web-based intervention, A Smoking Prevention Interactive Experience (ASPIRE), on adolescents' intention to smoke, while considering the experience of interactivity and entertainment as predictors of reduced intention to smoke, under a transitional user experience model...
February 16, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28146250/effect-of-selective-inhibition-of-reactivated-nicotine-associated-memories-with-propranolol-on-nicotine-craving
#9
Yan-Xue Xue, Jia-Hui Deng, Ya-Yun Chen, Li-Bo Zhang, Ping Wu, Geng-Di Huang, Yi-Xiao Luo, Yan-Ping Bao, Yu-Mei Wang, Yavin Shaham, Jie Shi, Lin Lu
Importance: A relapse into nicotine addiction during abstinence often occurs after the reactivation of nicotine reward memories, either by acute exposure to nicotine (a smoking episode) or by smoking-associated conditioned stimuli (CS). Preclinical studies suggest that drug reward memories can undergo memory reconsolidation after being reactivated, during which they can be weakened or erased by pharmacological or behavioral manipulations. However, translational clinical studies using CS-induced memory retrieval-reconsolidation procedures to decrease drug craving reported inconsistent results...
March 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28146248/disruption-of-reward-processing-in-addiction-an-image-based-meta-analysis-of-functional-magnetic-resonance-imaging-studies
#10
Maartje Luijten, Arnt F Schellekens, Simone Kühn, Marise W J Machielse, Guillaume Sescousse
Importance: Disrupted reward processing, mainly driven by striatal dysfunction, is a key characteristic of addictive behaviors. However, functional magnetic resonance imaging (fMRI) studies have reported conflicting results, with both hypoactivations and hyperactivations during anticipation and outcome notification of monetary rewards in addiction. Objective: To determine the nature and direction of reward-processing disruptions during anticipation and outcome notification of monetary rewards in individuals with addiction using image-based meta-analyses of fMRI studies...
February 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28146243/effect-of-a-brief-memory-updating-intervention-on-smoking-behavior-a-randomized-clinical-trial
#11
Lisa J Germeroth, Matthew J Carpenter, Nathaniel L Baker, Brett Froeliger, Steven D LaRowe, Michael E Saladin
Importance: Recent research on addiction-related memory processes suggests that protracted extinction training following brief cue-elicited memory retrieval (ie, retrieval-extinction [R-E] training) can attenuate/eradicate the ability of cues to elicit learned behaviors. One study reported that cue-elicited craving among detoxified heroin addicts was substantially attenuated following R-E training and through 6-month follow-up. Objective: To build on these impressive findings by examining whether R-E training could attenuate smoking-related craving and behavior...
March 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28126511/efficacy-of-mindfulness-meditation-for-smoking-cessation-a-systematic-review-and-meta-analysis
#12
REVIEW
Margaret A Maglione, Alicia Ruelaz Maher, Brett Ewing, Benjamin Colaiaco, Sydne Newberry, Ryan Kandrack, Roberta M Shanman, Melony E Sorbero, Susanne Hempel
BACKGROUND: Smokers increasingly seek alternative interventions to assist in cessation or reduction efforts. Mindfulness meditation, which facilitates detached observation and paying attention to the present moment with openness, curiosity, and acceptance, has recently been studied as a smoking cessation intervention. AIMS: This review synthesizes randomized controlled trials (RCTs) of mindfulness meditation (MM) interventions for smoking cessation. METHODS: Five electronic databases were searched from inception to October 2016 to identify English-language RCTs evaluating the efficacy and safety of MM interventions for smoking cessation, reduction, or a decrease in nicotine cravings...
January 18, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28126277/weight-of-evidence-evaluation-of-a-network-of-adverse-outcome-pathways-linking-activation-of-the-nicotinic-acetylcholine-receptor-in-honey-bees-to-colony-death
#13
REVIEW
Carlie A LaLone, Daniel L Villeneuve, Judy Wu-Smart, Rebecca Y Milsk, Keith Sappington, Kristina V Garber, Justin Housenger, Gerald T Ankley
Ongoing honey bee (Apis mellifera) colony losses are of significant international concern because of the essential role these insects play in pollinating crops. Both chemical and non-chemical stressors have been implicated as possible contributors to colony failure; however, the potential role(s) of commonly-used neonicotinoid insecticides has emerged as particularly concerning. Neonicotinoids act on the nicotinic acetylcholine receptors (nAChRs) in the central nervous system to eliminate pest insects. However, mounting evidence indicates that neonicotinoids also may adversely affect beneficial pollinators, such as the honey bee, via impairments on learning and memory, and ultimately foraging success...
April 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28105289/development-of-4-heteroarylamino-1-azaspiro-oxazole-5-3-bicyclo-2-2-2-octanes-as-%C3%AE-7-nicotinic-receptor-agonists
#14
Matthew D Hill, Haiquan Fang, H Dalton King, Christiana I Iwuagwu, Ivar M McDonald, James Cook, F Christopher Zusi, Robert A Mate, Ronald J Knox, Debra Post-Munson, Amy Easton, Regina Miller, Kimberley Lentz, Wendy Clarke, Yulia Benitex, Nicholas Lodge, Robert Zaczek, Rex Denton, Daniel Morgan, Linda Bristow, John E Macor, Richard Olson
We describe the synthesis of quinuclidine-containing spiroimidates and their utility as α7 nicotinic acetylcholine receptor (nAChR) partial agonists. A convergent synthetic route allowed for rapid SAR investigation and provided a diverse set of fused 6,5-heteroaryl analogs. Two potent and selective α7 nAChR partial agonists, (1'S,3'R,4'S)-N-(7-bromopyrrolo[2,1-f][1,2,4]triazin-4-yl)-4H-1'-azaspiro[oxazole-5,3'-bicyclo[2.2.2]octan]-2-amine (20) and (1'S,3'R,4'S)-N-(7-chloropyrrolo[2,1-f][1,2,4]triazin-4-yl)-4H-1'-azaspiro[oxazole-5,3'-bicyclo[2...
January 12, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28101715/cortex-and-amygdala-dependent-learning-and-nicotinic-acetylcholine-receptor-gene-expression-is-severely-impaired-in-mice-orally-treated-with-alcl3
#15
Syeda Mehpara Farhat, Aamra Mahboob, Touqeer Ahmed
Recent industrialization has increased human exposure to bio-available aluminum (Al). If more Al enters the brain than leaves, Al concentration will rise in the brain leading to neurodegenerative disorders. The aim of the present study was to determine Al concentration, neurodegeneration, and nicotinic acetylcholine receptor (nAChR) gene expression in the cortex and amygdala after oral ingestion of Al salt. The effect of Al on cortex- and amygdala-dependent learning and memory functions was also assessed. Mice were given AlCl3 (250 mg/kg) in drinking water for 42 days...
January 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28078612/ameliorative-effect-of-ginsenoside-rg1-on-lipopolysaccharide-induced-cognitive-impairment-role-of-cholinergic-system
#16
Yang Jin, Jian Peng, Xiaona Wang, Dong Zhang, Tianyin Wang
Bacterial endotoxin lipopolysaccharide (LPS) can induce systemic inflammation, and therefore disrupt learning and memory processes. Ginsenoside Rg1, a major bioactive component of ginseng, is shown to greatly improve cognitive function. The present study was designed to further investigate whether administration of ginsenoside Rg1 can ameliorate LPS-induced cognitive impairment in the Y-maze and Morris water maze (MWM) task, and to explore the underlying mechanisms. Results showed that exposure to LPS (500 μg/kg) significantly impaired working and spatial memory and that repeated treatment with ginsenoside Rg1 (200 mg/kg/day, for 30 days) could effectively alleviate the LPS-induced cognitive decline as indicated by increased working and spatial memory in the Y-maze and MWM tests...
January 11, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28072454/non-neuronal-acetylcholine-involved-in-reproduction-in-mammals-and-honeybees
#17
REVIEW
Ignaz Wessler, Charles James Kirkpatrick
Bacteria and archaea synthesize acetylcholine (ACh). Thus it can be postulated that ACh was created by nature roughly 3 billion years ago. Therefore, the wide expression of ACh in nature (i.e. in bacteria, archaea, unicellular organisms, plants, fungi, non-vertebrates and vertebrates and the abundance of non-neuronal cells of mammals) is not surprising. The term non-neuronal ACh and non-neuronal cholinergic system have been introduced to describe the auto- and paracrine, i.e. local regulatory actions of cells not innervated by neuronal cholinergic fibers to communicate among themselves...
January 10, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28049095/riluzole-ameliorates-learning-and-memory-deficits-in-a%C3%AE-25-35-induced-rat-model-of-alzheimer-s-disease-and-is-independent-of-cholinoceptor-activation
#18
Zahra Mokhtari, Tourandokht Baluchnejadmojarad, Farnaz Nikbakht, Monireh Mansouri, Mehrdad Roghani
Alzheimer's disease (AD) is a major global public health concern and social care problem that is associated with learning, memory, and cognitive deficits. Riluzole is a glutamate modulator which has shown to improve memory performance in aged rats and may be of benefit in Alzheimer's disease. In the present study, its beneficial effect on attenuation of learning and memory deficits in Aβ25-35-induced rat model of AD was assessed. Riluzole administration at a dose of 10mg/kg/day p.o. improved spatial memory in Morris water maze and retention and recall in passive avoidance task and its protective effect was not neutralized following intracerebroventricular microinjection of muscarinic or nicotinic receptor antagonists...
March 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28045139/chrna7-deficient-mice-manifest-no-consistent-neuropsychiatric-and-behavioral-phenotypes
#19
Jiani Yin, Wu Chen, Hongxing Yang, Mingshan Xue, Christian P Schaaf
The alpha7 nicotinic acetylcholine receptor, encoded by the CHRNA7 gene, has been implicated in various psychiatric and behavioral disorders, including schizophrenia, bipolar disorder, epilepsy, autism, Alzheimer's disease, and Parkinson's disease, and is considered a potential target for therapeutic intervention. 15q13.3 microdeletion syndrome is a rare genetic disorder, caused by submicroscopic deletions on chromosome 15q. CHRNA7 is the only gene in this locus that has been deleted entirely in cases involving the smallest microdeletions...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28029335/enhanced-susceptibility-of-ca3-hippocampus-to-prenatal-nicotine-exposure
#20
O O Kalejaiye, M C Gondré-Lewis
The brain is highly susceptible to adverse effects of drugs of abuse during early phases of life. Prenatal nicotine exposure (PNE), a preventable cause of gestational and infant mortality, can alter neuron wiring and induce sustained deficits in attention and learning. Here, a rat model of PNE (embryonic days 7-21) was used to examine the maturing hippocampus, which encodes new memories and processes emotional memory. Components of synaptic signaling were evaluated at postnatal day 14 (P14), a period of prolific synaptogenesis in rats, to determine if glutamatergic transmission-associated molecules are regulated in subregions of hippocampus as early as P14...
December 28, 2016: Journal of Developmental Origins of Health and Disease
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