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Conditioned place preference

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https://www.readbyqxmd.com/read/28517237/development-of-an-alginate-hydrogel-to-deliver-aqueous-bait-for-pest-ant-management
#1
Jia-Wei Tay, Mark S Hoddle, Ashok Mulchandani, Dong-Hwan Choe
BACKGROUND: Insecticide sprays used for ant control cause environmental contamination. Liquid bait is a safe and effective alternative, but it requires bait stations to dispense the toxicant. We developed a biodegradable hydrogel to deliver liquid bait obviating the need for bait stations. RESULTS: Alginate hydrogel beads with preferred rigidity and maximum hydration in 25% sucrose solution were engineered by optimizing a crosslinking process. The moisture content of the substrate on which the beads were placed and the relative atmospheric humidity significantly influenced water loss dynamics of the hydrated hydrogel beads...
May 18, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28504327/preferences-for-prenatal-diagnosis-of-sickle-cell-disorder-a%C3%A2-discrete-choice-experiment-comparing-potential-service-users%C3%A2-and-health-care-providers
#2
Melissa Hill, Eugene Oteng-Ntim, Frida Forya, Mary Petrou, Stephen Morris, Lyn S Chitty
BACKGROUND: Non-invasive prenatal diagnosis (NIPD) for sickle-cell disorder (SCD) is moving closer to implementation and studies considering stakeholder preferences are required to underpin strategies for offering NIPD in clinical practice. OBJECTIVE: Determine service user and provider preferences for key attributes of prenatal diagnostic tests for SCD and examine views on NIPD. METHOD: A questionnaire that includes a discrete choice experiment was used to determine the preferences of service users and providers for prenatal tests that varied across three attributes: accuracy, time of test and risk of miscarriage...
May 15, 2017: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
https://www.readbyqxmd.com/read/28495976/optogenetic-inhibition-of-ventral-pallidum-neurons-impairs-context-driven-salt-seeking
#3
Stephen E Chang, Elizabeth B Smedley, Katherine J Stansfield, Jeffrey J Stott, Kyle S Smith
Salt appetite, in which animals can immediately seek out salt when under a novel state of sodium deprivation, is a classic example of how homeostatic systems interface with learned associations to produce an on-the-fly updating of motivated behavior. Neural activity in the ventral pallidum (VP) has been shown to encode changes in the value of salt under such conditions, both the value of salt itself (Tindell et al., 2006) and the motivational value of its predictive cues (Tindell et al., 2009; Robinson & Berridge, 2013)...
May 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28494108/selective-%C3%AE%C2%BA-opioid-receptor-partial-agonist-hs666-produces-potent-antinociception-without-inducing-aversion-after-i-c-v-administration-in-mice
#4
Mariana Spetea, Shainnel O Eans, Michelle L Ganno, Aquilino Lantero, Michael Mairegger, Lawrence Toll, Helmut Schmidhammer, Jay P McLaughlin
BACKGROUND AND PURPOSE: The κ opioid (KOP) receptor has a central role in modulating neurotransmission in central and peripheral neuronal circuits that subserve pain and other behavioural responses. Although KOP agonists do not produce euphoria or lead to respiratory suppression, they induce dysphoria and sedation. We hypothesized that brain-penetrant KOP receptor ligands possessing biased agonism towards G protein signalling over β-arrestin2 recruitment would produce robust antinociception with fewer liabilities of use...
May 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28493143/differences-in-the-importance-of-weather-and-weather-based-decisions-among-campers-in-ontario-parks-canada
#5
Micah J Hewer, Daniel J Scott, William A Gough
Parks and protected areas represent an important resource for tourism in Canada, in which camping is a common recreational activity. The important relationship between weather and climate with recreation and tourism has been widely acknowledged within the academic literature. Howbeit, the need for activity-specific assessments has been identified as an on-going need for future research in the field of tourism climatology. Furthermore, very little is known about the interrelationships between personal characteristics and socio-demographics with weather preferences and behavioural thresholds...
May 10, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28492416/cannabinoid-1-receptor-blockade-in-the-dorsal-hippocampus-prevents-the-reinstatement-but-not-acquisition-of-morphine-induced-conditioned-place-preference-in-rats
#6
Xin Zhao, Li Yao, Fang Wang, Han Zhang, Li Wu
The cannabinoid 1 receptors (CB1Rs) signaling is strongly linked to conditioned rewarding effects of opiates. Learned associations between environmental contexts and discrete cues and drug use play an important role in the maintenance and/or relapse of morphine addiction. Although previous studies suggest that context-dependent morphine treatment alters endocannabinoid signaling and synaptic plasticity in the hippocampus, the role of endocannabinoid in morphine conditioned place preference (CPP) and reinstatement remains unknown...
May 10, 2017: Neuroreport
https://www.readbyqxmd.com/read/28487223/obesogenic-diet-intake-during-pregnancy-programs-aberrant-synaptic-plasticity-and-addiction-like-behavior-to-a-palatable-food-in-offspring
#7
Alberto Camacho, Larisa Montalvo-Martinez, Robbi E Cardenas-Perez, Lizeth Fuentes-Mera, Lourdes Garza-Ocañas
Contextual food conditioned behaviors require plasticity of glutamatergic neurotransmission in the reward system, involving changes in the expression of including a-amino-3-hydroxy-5- methylisoxazole-4-propionate receptors (AMPA), N-methyl-d-aspartic acid (NMDA) and metabotropic glutamate 2,3 (mGlur 2,3). However, the role of changes in glutamatergic synaptic markers on energy-dense palatable food preference during development has not been described. Here, we determine the effect of nutritional programing during gestation on fat food choices using a conditioned place preference (CPP) test and an operant training response and its effect on glutamatergic markers in the nucleus accumbens (Nac) shell and prefrontal cortex (PFC)...
May 6, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28484990/behavioral-and-biochemical-impact-of-chronic-unpredictable-mild-stress-on-the-acquisition-of-nicotine-conditioned-place-preference-in-rats
#8
G Biala, K Pekala, A Boguszewska-Czubara, A Michalak, M Kruk-Slomka, K Grot, B Budzynska
Addiction is a chronic psychiatric disease which represents a global problem, and stress can increase drug addiction and relapse. Taking into account frequent concomitance of nicotine dependence and stress, the purpose of the present study was to assess behavioral and biochemical effects of chronic unpredictable mild stress (CUMS) exposure on nicotine reward in rats measured in the conditioned place preference (CPP) paradigm. Rats were submitted to the CUMS for 3 weeks and conditioned with nicotine (0.175 mg/kg) for 2 or 3 days...
May 8, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28479397/locomotor-sensitization-to-intermittent-ketamine-administration-is-associated-with-nucleus-accumbens-plasticity-in-male-and-female-rats
#9
C E Strong, K J Schoepfer, A M Dossat, S K Saland, K N Wright, M Kabbaj
Clinical evidence suggests superior antidepressant response over time with a repeated, intermittent ketamine treatment regimen as compared to a single infusion. However, the club drug ketamine is commonly abused. Therefore, the abuse potential of repeated ketamine injections at low doses needs to be investigated. In this study, we investigated the abuse potential of repeated exposure to either 0, 2.5, or 5 mg/kg ketamine administered once weekly for seven weeks. Locomotor activity and conditioned place preference (CPP) were assayed to evaluate behavioral sensitization to the locomotor activating effects of ketamine and its rewarding properties, respectively...
May 4, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28479265/the-amphetamine-associated-context-exerts-a-stronger-motivational-effect-in-low-anxiety-rats-than-in-high-anxiety-rats
#10
Małgorzata Lehner, Marek Gryz, Aleksandra Wisłowska-Stanek, Danuta Turzyńska, Alicja Sobolewska, Anna Skórzewska, Adam Płaźnik
This study used the conditioned place preference test to explore the effects of subchronic amphetamine administration on drug-associated cues in rats with different emotional reactivity. We also examined the changes in markers of dopaminergic activity in brain regions in response to the amphetamine-paired context, after a withdrawal period preceded by subchronic amphetamine treatment. We used low-anxiety (LR) and high-anxiety (HR) rats, which are known to exhibit distinct levels of susceptibility to amphetamine...
May 4, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28479264/role-of-nitric-oxide-pathway-in-the-conditioned-rewarding-effects-of-mdma-in-mice
#11
M P García-Pardo, M Rodríguez-Arias, J Miñarro, M A Aguilar
It is estimated that 2.1 million young adults used MDMA/Ecstasy in the last year in Europe. Vulnerable subjects can develop dependence after MDMA abuse but currently there does not exist an effective treatment for this disorder. The nitric oxide (NO) pathway seems to have an important role on the rewarding effects of different drugs and has been proposed as a new pharmacological treatment for psychostimulant addiction. In the present study, we intend to evaluate whether the blockade of the NO synthesis (NOS) interferes with the rewarding effects of MDMA in the conditioned preference place (CPP) paradigm in young adult male mice...
May 4, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28473252/alcohol-seeking-and-relapse-a-focus-on-incentive-salience-and-contextual-conditioning
#12
REVIEW
Milan D Valyear, Franz R Villaruel, Nadia Chaudhri
Environmental stimuli that reliably accompany alcohol intake can become associated with the pharmacological effects of alcohol through classical (Pavlovian) conditioning. Of growing interest to addiction researchers is whether or not this process results in the attribution of incentive salience to alcohol-predictive cues, which could motivate alcohol-seeking behavior and relapse. To evaluate this question, we present a review of rodent behavioral studies that examined the capacity of alcohol-predictive cues to (i) support sign-tracking behavior, (ii) serve as conditioned reinforcers, and (iii) produce Pavlovian-to-instrumental transfer...
May 1, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28466092/repeated-social-defeat-and-the-rewarding-effects-of-cocaine-in-adult-and-adolescent-mice-dopamine-transcription-factors-probdnf-signaling-pathways-and-the-trkb-receptor-in-the-mesolimbic-system
#13
Sandra Montagud-Romero, Cristina Nuñez, M Carmen Blanco-Gandia, Elena Martínez-Laorden, María A Aguilar, Javier Navarro-Zaragoza, Pilar Almela, Maria-Victoria Milanés, María-Luisa Laorden, José Miñarro, Marta Rodríguez-Arias
RATIONALE: Repeated social defeat (RSD) increases the rewarding effects of cocaine in adolescent and adult rodents. OBJECTIVE: The aim of the present study was to compare the long-term effects of RSD on the conditioned rewarding effects of cocaine and levels of the transcription factors Pitx3 and Nurr1 in the ventral tegmental area (VTA), the dopamine transporter (DAT), the D2 dopamine receptor (D2DR) and precursor of brain-derived neurotrophic factor (proBDNF) signaling pathways, and the tropomyosin-related kinase B (TrkB) receptor in the nucleus accumbens (NAc) in adult and adolescent mice...
May 2, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28464876/prenatal-chlorpyrifos-leads-to-autism-like-deficits-in-c57bl6-j-mice
#14
Anat Lan, Michal Kalimian, Benjamin Amram, Ora Kofman
BACKGROUND: Children are at daily risk for exposure to organophosphate insecticides, of which the most common is chlorpyrifos (CPF). Exposure of pregnant women to CPF was linked to decreased birth weight, abnormal reflexes, reduction in IQ, as well as increased maternal reports of signs of pervasive developmental disorder. The aim of current study was to examine the long term effects of prenatal exposure to CPF in C57BL/6 J (B6) mice with specific focus on social and repetitive behavior...
May 2, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28457972/the-rewarding-effects-of-ethanol-are-modulated-by-binge-eating-of-a-high-fat-diet-during-adolescence
#15
M Carmen Blanco-Gandía, Juan Carlos Ledesma, Auxiliadora Aracil-Fernández, Francisco Navarrete, Sandra Montagud-Romero, Maria A Aguilar, Jorge Manzanares, José Miñarro, Marta Rodríguez-Arias
Binge-eating is considered a specific form of overeating characterized by intermittent and high caloric food intake in a short period of time. Epidemiologic studies support a positive relation between the ingestion of fat and ethanol (EtOH), specifically among adolescent subjects. The aim of this work was to clarify the role of the compulsive, limited and intermittent intake of a high-fat food during adolescence on the rewarding effects of EtOH. After binge-eating for 2 h, three days a week from postnatal day (PND) 29, the reinforcing effects of EtOH were tested with EtOH self-administration (SA), conditioned place preference (CPP) and ethanol locomotor sensitization procedures in young adult mice...
April 27, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28456841/changes-in-gene-expression-and-sensitivity-of-cocaine-reward-produced-by-a-continuous-fat-diet
#16
M Carmen Blanco-Gandía, Auxiliadora Aracil-Fernández, Sandra Montagud-Romero, Maria A Aguilar, Jorge Manzanares, José Miñarro, Marta Rodríguez-Arias
RATIONALE: Preclinical studies report that free access to a high-fat diet (HFD) alters the response to psychostimulants. OBJECTIVES: The aim of the present study was to examine how HFD exposure during adolescence modifies cocaine effects. Gene expression of CB1 and mu-opioid receptors (MOr) in the nucleus accumbens (N Acc) and prefrontal cortex (PFC) and ghrelin receptor (GHSR) in the ventral tegmental area (VTA) were assessed. METHODS: Mice were allowed continuous access to fat from PND 29, and the locomotor (10 mg/kg) and reinforcing effects of cocaine (1 and 6 mg/kg) on conditioned place preference (CPP) were evaluated on PND 69...
April 29, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28455125/relapse-to-cocaine-seeking-in-an-invertebrate
#17
Akua O Amaning-Kwarteng, Aman Asif-Malik, Yue Pei, Juan J Canales
Addiction is characterised by cycles of compulsive drug taking, periods of abstinence and episodes of relapse. The extinction/reinstatement paradigm has been extensively used in rodents to model human relapse and explore underlying mechanisms and therapeutics. However, relapse to drug seeking behaviour has not been previously demonstrated in invertebrates. Here, we used a cocaine conditioned place preference (CPP) paradigm in the flatworm, planarian, followed by extinction and reinstatement of drug seeking...
April 25, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28454718/effects-of-co-administration-of-ketamine-and-ethanol-on-the-dopamine-system-via-the-cortex-striatum-circuitry
#18
Qing Liu, Tian-Yong Xu, Zhi-Bi Zhang, Chi-Kwan Leung, Ding-Yun You, Shang-Wen Wang, Shuai Yi, Qiang Jing, Run-Fang Xie, Huifang-Jie Li, Xiao-Feng Zeng
AIM: Ketamine and ethanol are increasingly being used together as recreational drugs in rave parties. Their effects on the dopamine (DA) system remain largely unknown. This study aimed to investigate the effects of consuming two different concentrations of ketamine with and without alcohol on the DA system. MATERIALS AND METHODS: We employed the conditioned place preference (CPP) paradigm to evaluate the rewarding effects of the combined administration of two different doses of ketamine (30mg/kg and 60mg/kg) with ethanol (0...
April 25, 2017: Life Sciences
https://www.readbyqxmd.com/read/28446883/in-vitro-and-in-vivo-profile-of-ppl-101-and-ppl-103-mixed-opioid-partial-agonist-analgesics-with-low-abuse-potential
#19
Taline V Khroyan, Andrea Cippitelli, Nicholas Toll, John A Lawson, William Crossman, Willma E Polgar, Lawrence Toll
Opiates are still the most effective and widely used treatments for acute and chronic pain. However, the problems associated with morphine and other standard opioid analgesics severely limit their effectiveness in the clinic. PPL-101 and PPL-103 derived from morphine and morphinan ring systems contain a chiral N-substituent, which confers it with a unique combination of high-binding affinities and partial agonist activities at mu, delta, and kappa opioid receptors, leading to unique in vivo pharmacology compared to other conventional opioids...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28446527/the-value-of-different-aspects-of-person-centred-care-a-series-of-discrete-choice-experiments-in-people-with-long-term-conditions
#20
Christopher D Burton, Vikki A Entwistle, Alison M Elliott, Nicolas Krucien, Terry Porteous, Mandy Ryan
OBJECTIVE: To measure the value the patients place on different aspects of person-centred care. DESIGN: We systematically identified four attributes of person-centred care. We then measured their value to 923 people with either chronic pain or chronic lung disease over three discrete choice experiments (DCEs) about services to support self-management. We calculated the value of each attribute for all respondents and identified groups of people with similar preferences using latent class modelling...
April 26, 2017: BMJ Open
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