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Conditioned place preference

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https://www.readbyqxmd.com/read/28820778/src-kinase-inhibition-attenuates-morphine-tolerance-without-affecting-reinforcement-or-psychomotor-stimulation
#1
Fiona A Bull, Daniel T Baptista-Hon, Claire Sneddon, Lisa Wright, Wendy Walwyn, Tim G Hales
BACKGROUND: Prolonged opioid administration leads to tolerance characterized by reduced analgesic potency. Pain management is additionally compromised by the hedonic effects of opioids, the cause of their misuse. The multifunctional protein β-arrestin2 regulates the hedonic effects of morphine and participates in tolerance. These actions might reflect µ opioid receptor up-regulation through reduced endocytosis. β-Arrestin2 also recruits kinases to µ receptors. We explored the role of Src kinase in morphine analgesic tolerance, locomotor stimulation, and reinforcement in C57BL/6 mice...
August 18, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28819238/effects-of-environmental-enrichment-upon-ethanol-induced-conditioned-place-preference-and-pre-frontal-bdnf-levels-in-adolescent-and-adult-mice
#2
Ricardo Marcos Pautassi, Andrea B Suárez, Lucas Barbosa Hoffmann, André Veloso Rueda, Mariana Rae, Priscila Marianno, Rosana Camarini
Environmental enrichment (EE) provides a non-pharmacological tool to alter drug-induced reward, yet its effects on ethanol-induced reward remain controversial. We analyzed adolescent vs. adult (mice) differences in the influence of EE on ethanol-induced conditioned place preference (CPP). The effects of these treatments on brain-derived neurotrophic factor (BDNF) levels in the prefrontal cortex were examined in a separate group of animals. Ethanol-induced CPP was found in adults, and it was similar in EE and in animals reared under standard housing conditions (SC)...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28814468/persistent-effects-of-acute-stress-on-fear-and-drug-seeking-in-a-novel-model-of-the-comorbidity-between-post-traumatic-stress-disorder-and-addiction
#3
Christie L Pizzimenti, Tom M Navis, K Matthew Lattal
Even following long periods of abstinence, individuals with anxiety disorders have high rates of relapse to drugs of abuse. Although many current models of relapse demonstrate effects of acute stress on drug-seeking, most of these studies examine stressful experiences that occur in close temporal and physical proximity to the reinstatement test. Here, we assess the effects of a stressful experience in one context on fear and drug-seeking in a different context. We adapt the stress-enhanced fear learning procedure to examine impacts on drug-seeking long after the stressful experience occurred...
September 2017: Learning & Memory
https://www.readbyqxmd.com/read/28814321/relatives-perceived-quality-of-palliative-care-comparisons-between-care-settings-in-which-patients-die
#4
Dolf de Boer, Jolien M Hofstede, Anke J E de Veer, Natasja J H Raijmakers, Anneke L Francke
BACKGROUND: Dying in the preferred setting is an indicator of good palliative care quality. Most people prefer to die at home. But does the quality of care as perceived by their relatives vary depending on the care setting that is the place of death? The aim is to compare (from the relatives perspective) whether there are perceived differences in the quality of palliative care between the settings in which people die. METHODS: Multivariate linear regression analyses have been carried out using an existing dataset containing information collected using the relatives' version of the Consumer Quality Index (CQ-index) Palliative Care...
August 16, 2017: BMC Palliative Care
https://www.readbyqxmd.com/read/28811779/effect-of-exercise-and-morphine-on-psychological-and-physical-dependencies-bdnf-and-trkb-gene-expression-in-rat-s-hippocampus
#5
Mojtaba Naghshvarian, Mohammad-Reza Zarrindast, Shahram Ejtemaei Mehr, Mohammad Mehdi Ommati, Seyedeh Fatemeh Sajjadi
OBJECTIVES: To compare the effect of exercise and morphine on abstinence syndrome and hippocampal gene expression in rat model. METHODS: Thirty adult male rats were exposed to voluntary wheel exercise (low, medium, high) for 28 days. The subjects entered Conditioned Place Preference (CPP) apparatus and experienced morphine (low, medium, high) CPP and followed by naloxone test. Correlation between exercise level, morphine injection, concurrent morphine administration and exercise with morphine CPP, BDNF and TrkB genes was determined...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28811669/paraventricular-thalamic-control-of-food-intake-and-reward-role-of-glucagon-like-peptide-1-receptor-signaling
#6
Zhi Yi Ong, Jing-Jing Liu, Zhiping P Pang, Harvey J Grill
Paraventricular thalamic nucleus (PVT) neurons receive hindbrain and hypothalamic inputs, and project to forebrain sites involved in reward and motivation function. The role of PVT in energy balance and reward control is however understudied. Given that PVT neurons express glucagon-like peptide-1 receptors (GLP-1R), which are critical to feeding and body weight control, we tested the hypothesis that PVT GLP-1R signaling contributes to food intake and reward inhibition. To assess the hypothesis, behavioral tests including chow and high-fat diet intake, meal patterns, conditioned place preference for high-fat food, cue-induced reinstatement of sucrose-seeking, and motivation to work for sucrose were employed following intra-PVT delivery of either GLP-1R agonist, exendin-4 (Ex4), or GLP-1R antagonist, exendin-9-39 (Ex9)...
July 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28811180/development-of-an-opioid-self-administration-assay-to-study-drug-seeking-in-zebrafish
#7
Gabriel D Bossé, Randall T Peterson
The zebrafish (Danio rerio) has become an excellent tool to study mental health disorders, due to its physiological and genetic similarity to humans, ease of genetic manipulation, and feasibility of small molecule screening. Zebrafish have been shown to exhibit characteristics of addiction to drugs of abuse in non-contingent assays, including conditioned place preference, but contingent assays have been limited to a single assay for alcohol consumption. Using inexpensive electronic, mechanical, and optical components, we developed an automated opioid self-administration assay for zebrafish, enabling us to measure drug seeking and gain insight into the underlying biological pathways...
August 12, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28810866/the-development-of-an-ivermectin-based-attractive-toxic-sugar-bait-atsb-to-target-anopheles-arabiensis
#8
Frank Chelestino Tenywa, Athumani Kambagha, Adam Saddler, Marta Ferreira Maia
BACKGROUND: An increasing number of countries in sub-Saharan Africa are moving towards malaria-elimination, mostly thanks to successful vector control campaigns. However, elimination has proven challenging, resulting in the persistence of malaria transmission. It is now accepted that in order to eliminate malaria, new complementary vector control approaches must be developed. This study describes the development of a sugar-baited resting place containing a toxic dose of ivermectin for the control of Anopheles arabiensis...
August 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28807162/chinese-herbal-medicine-for-the-treatment-of-drug-addiction
#9
Weili Zhu, Yinan Zhang, Yingjie Huang, Lin Lu
This chapter summarizes recent developments in preclinical and clinical research on Chinese herbal medicines and their neurochemical mechanism of action for the treatment of drug addiction. We searched Chinese and English scientific literature and selected several kinds of Chinese herbal medicines that have beneficial effects on drug addiction. Ginseng (Renshen) may be clinically useful for the prevention of opioid abuse and dependence. Rhizoma Corydalis (Yanhusuo) may be used to prevent relapse to chronic drug dependence...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28803323/effect-of-footshock-stress-on-place-conditioning-produced-by-%C3%AE-9-tetrahydrocannabinol-and-the-fatty-acid-amide-hydrolase-faah-inhibitor-urb597-in-sprague-dawley-rats
#10
Marieka V DeVuono, Kiri L Wills, Danielle V MacPherson, Kelly M Hrelja, Linda A Parker
RATIONALE: Unlike other drugs of abuse, Δ(9)-tetrahydrocanabinol (THC) is generally aversive in rodent conditioned place preference models, but little is known about how stress may modify THC affective properties. OBJECTIVE: We evaluate the potential of footshock stress to enhance the rewarding effects of THC and the fatty acid amide hydrolase inhibitor, URB597, as it has been shown to enhance their anxiolytic effects. MATERIALS AND METHODS: The effect of footshock stress 24 h prior to each conditioning trial on the rewarding/aversive effects of THC (1, 0...
August 12, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28802449/living-with-an-autonomous-spatiotemporal-home-heating-system-exploration-of-the-user-experiences-ux-through-a-longitudinal-technology-intervention-based-mixed-methods-approach
#11
Martin Kruusimagi, Sarah Sharples, Darren Robinson
Rising energy demands place pressure on domestic energy consumption, but savings can be delivered through home automation and engaging users with their heating and energy behaviours. The aim of this paper is to explore user experiences (UX) of living with an automated heating system regarding experiences of control, understanding of the system, emerging thermal behaviours, and interactions with the system as this area is not sufficiently researched in the existing homes setting through extended deployment. We present a longitudinal deployment of a quasi-autonomous spatiotemporal home heating system in three homes...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28802434/evaluation-of-postural-sway-and-impact-forces-during-ingress-and-egress-of-scissor-lifts-at-elevations
#12
Christopher S Pan, Sharon S Chiou, Tsui-Ying Kau, Bryan M Wimer, Xiaopeng Ning, Paul Keane
Workers are at risk when entering (ingress) or exiting (egress) elevated scissor lifts. In this study, we recorded ground impact forces and postural sway from 22 construction workers while they performed ingress and egress between a scissor lift and an adjacent work surface with varying conditions: lift opening designs, horizontal and vertical gaps, and sloped work surfaces. We observed higher peak ground shear forces when using a bar-and-chain opening, with larger horizontal gap, with the lift surface more than 0...
November 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28797601/effect-of-acute-and-subchronic-stress-on-electrical-activity-of-basolateral-amygdala-neurons-in-conditioned-place-preference-paradigm-an-electrophysiological-study
#13
Zahra Fatahi, Mohammad Ismail Zibaii, Abbas Haghparast
The basolateral amygdala (BLA) plays a critical role in the neural circuitry of stress and mediates the effects of stress on memory related processes. Moreover, this area has an important role in drug-seeking and relapse of approach behavior to drug-associated cues. Therefore, in the present study, we aimed to investigate the effects of acute and subchronic stress in saline- and/or morphine-treated rats in conditioned place preference paradigm on the neural activity in the BLA. Male Wistar rats were divided into two saline- and morphine-treated supergroups...
August 7, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28797598/differential-behavioral-effects-of-ethanol-pre-exposure-in-male-and-female-zebrafish-danio-rerio
#14
Carly L Clayman, Elizabeth J Malloy, David N Kearns, Victoria P Connaughton
Alcohol exposure in adolescence is a contributing factor toward reward-seeking behavior in adulthood. This reward-seeking behavior is assessed in animal models using the conditioned place preference (CPP) paradigm. In this study, ethanol-induced change in time spent by zebrafish on the initially non-preferred tank side was studied by conditioning adult zebrafish to ethanol dissolved in water (0.00% 1.00%; 1.25%; 1.50%; 1.60%; 1.75% vol/vol) paired with an initially non-preferred environment. Following a single conditioning cycle, fish swam unrestricted in the CPP chamber to assess changes in preference...
August 7, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28793355/effects-of-cannabidiol-on-morphine-conditioned-place-preference-in-mice
#15
James Roland Markos, Hannah M Harris, Waseem Gul, Mahmoud A ElSohly, Kenneth J Sufka
This study sought to determine whether the cannabis constituent cannabidiol attenuates the development of morphine reward in the conditioned place preference paradigm. Separate groups of mice received either saline or morphine in combination with one of four doses of cannabidiol using three sets of drug/no-drug conditioning trials. After drug-place conditioning, morphine mice displayed robust place preference that was attenuated by 10 mg/kg cannabidiol. Further, when administered alone, this dose of cannabidiol was void of rewarding and aversive properties...
August 9, 2017: Planta Medica
https://www.readbyqxmd.com/read/28790193/assessing-the-value-of-the-zebrafish-conditioned-place-preference-model-for-predicting-human-abuse-potential
#16
Alistair James Brock, Susan M G Goody, Andrew N Mead, Ari Sudwarts, Matthew O Parker, Caroline H Brennan
Regulatory agencies recommend that centrally-active drugs are tested for abuse potential prior to approval. Standard preclinical assessments are conducted in rats or non-human primates (NHPs). This study evaluated the ability of the zebrafish conditioned place preference (CPP) model to predict human abuse outcomes. Twenty-seven compounds from a variety of pharmacological classes were tested in zebrafish CPP, categorized as positive or negative, and analysed using standard diagnostic tests of binary classification to determine the likelihood that zebrafish correctly predict robust positive signals in human subjective effects studies (+HSE) and/or DEA drug scheduling...
August 8, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28782589/the-role-of-thioredoxin-1-in-resisting-methamphetamine-induced-rewarding-effect
#17
Mengbing Huang, Lingpin Kong, Lihua Yang, Xiang Li, Xiaoshuang Zhou, Ye Li, Jie Bai
Methamphetamine (METH) is a highly addictive drug of abuse which induces behavioral sensitization and rewarding effects. Thioredoxin-1 (Trx-1) is a redox protein and plays role in regulating activity of transcription factor, such as cAMP responsive element-binding protein (CREB), AP-1, p53, is emerging as an important modulator of neuronal function. It has been reported that Trx-1 is involved in morphine dependence. In this study, we examined the rewarding effect after METH administration by conditioned place preference (CPP) of mice, and detected the levels of dopamine and the activity of cAMP responsive element-binding protein (CREB), the expressions of ΔFosB and cyclin-dependent kinase 5 (CDK5) in the ventral tegmental area (VTA) and nucleus accumbens (NAc) in mice...
August 4, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28780734/intra-accumbal-cannabinoid-agonist-attenuated-reinstatement-but-not-extinction-period-of-morphine-induced-conditioned-place-preference-evidence-for-different-characteristics-of-extinction-period-and-reinstatement
#18
Hossein Khaleghzadeh-Ahangar, Abbas Haghparast
The brain reward system consists of the ventral tegmental area that sends its dopaminergic projections to the forebrain, cortical areas, amygdala and largely to the nucleus accumbens (NAc). The present study aims were to investigate the effects of bilateral intra-accumbal microinjection of WIN55,212-2, a CB1 receptor agonist, on the duration of extinction period and reinstatement to morphine by the conditioned place preference (CPP) paradigm in the rat. Forty-six adult male albino Wistar rats received intra-accumbal WIN55,212-2 [p0...
August 5, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28780411/increased-ethanol-drinking-in-humanized-mice-expressing-the-mu-opioid-receptor-a118g-polymorphism-are-mediated-through-sex-specific-mechanisms
#19
Angela N Henderson-Redmond, Tammy E Lowe, Xi B Tian, Daniel J Morgan
The A118G single nucleotide polymorphism (SNP) of the mu-opioid receptor gene (Oprm1) has been implicated in mediating the rewarding effects of alcohol. Clinical and preclinical studies suggest that the G allele may confer a genetic vulnerability to alcohol dependence, though it remains unknown whether these effects are sex-specific. We used male and female mice homozygous for the "humanized" 118AA or 118GG alleles to determine whether the A118G SNP potentiates ethanol consumption in a sex-specific manner in both the two-bottle choice and drinking-in-the-dark (DID) paradigms...
August 2, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28769774/fenofibrate-administration-reduces-alcohol-and-saccharin-intake-in-rats-possible-effects-at-peripheral-and-central-levels
#20
Mario Rivera-Meza, Daniel Muñoz, Erik Jerez, María E Quintanilla, Catalina Salinas-Luypaert, Katia Fernandez, Eduardo Karahanian
We have previously shown that the administration of fenofibrate to high-drinker UChB rats markedly reduces voluntary ethanol intake. Fenofibrate is a peroxisome proliferator-activated receptor alpha (PPARα) agonist, which induces the proliferation of peroxisomes in the liver, leading to increases in catalase levels that result in acetaldehyde accumulation at aversive levels in the blood when animals consume ethanol. In these new studies, we aimed to investigate if the effect of fenofibrate on ethanol intake is produced exclusively in the liver (increasing catalase and systemic levels of acetaldehyde) or there might be additional effects at central level...
2017: Frontiers in Behavioral Neuroscience
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