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https://www.readbyqxmd.com/read/27640177/toward-early-estimation-and-treatment-of-addiction-vulnerability-radial-arm-maze-and-n-acetyl-cysteine-before-cocaine-sensitization-or-nicotine-self-administration-in-neonatal-ventral-hippocampal-lesion-rats
#1
Kalyan N Rao, Alena M Sentir, Eric A Engleman, Richard L Bell, Leslie A Hulvershorn, Alan Breier, R Andrew Chambers
RATIONAL: Prefrontal cortical (PFC)-hippocampal-striatal circuits, interconnected via glutamatergic signaling, are dysfunctional in mental illnesses that involve addiction vulnerability. OBJECTIVES: In healthy and neurodevelopmentally altered rats, we examined how Radial Arm Maze (RAM) performance estimates addiction vulnerability, and how starting a glutamatergic modulating agent, N-acetyl cysteine (NAC) in adolescence alters adult mental illness and/or addiction phenotypes...
December 2016: Psychopharmacology
https://www.readbyqxmd.com/read/24236078/on-the-evolution-of-handedness-evidence-for-feeding-biases
#2
Jason W Flindall, Claudia L R Gonzalez
Many theories have been put forward to explain the origins of right-handedness in humans. Here we present evidence that this preference may stem in part from a right hand advantage in grasping for feeding. Thirteen participants were asked to reach-to-grasp food items of 3 different sizes: SMALL (Cheerios®), MEDIUM (Froot Loops®), and LARGE (Oatmeal Squares®). Participants used both their right- and left-hands in separate blocks (50 trials each, starting order counterbalanced) to grasp the items. After each grasp, participants either a) ate the food item, or b) placed it inside a bib worn beneath his/her chin (25 trials each, blocked design, counterbalanced)...
2013: PloS One
https://www.readbyqxmd.com/read/23813263/the-effects-of-beverages-on-plaque-acidogenicity-after-a-sugary-challenge
#3
RANDOMIZED CONTROLLED TRIAL
Shilpa Naval, Anne Koerber, Larry Salzmann, Indru Punwani, Bradford R Johnson, Christine D Wu
BACKGROUND: Caries prevention traditionally has emphasized the restriction of cariogenic foods and beverages, but it has placed less emphasis on how the choice, combination and sequence of consumed foods and beverages may help reduce plaque acidogenicity. The authors conducted a study to examine whether whole milk, 100 percent apple juice or tap water affect dental plaque acidity in people after a sugary challenge. METHODS: Twenty adults participated in a randomized controlled crossover study...
July 2013: Journal of the American Dental Association
https://www.readbyqxmd.com/read/23688948/effect-of-chronic-administration-of-tamoxifen-and-or-estradiol-on-feeding-behavior-palatable-food-and-metabolic-parameters-in-ovariectomized-rats
#4
Carine Lampert, Danusa Mar Arcego, Daniela P Laureano, Luísa A Diehl, Isadora Ferreira da Costa Lima, Rachel Krolow, Letícia F Pettenuzzo, Carla Dalmaz, Deusa Vendite
Tamoxifen (TAM) is a selective estrogen receptor modulator (SERM) used in the treatment of breast cancer; however many women complain of weight gain during TAM treatment. The anorectic effects of estradiol (E) and TAM are well known, although the effects of E on the consumption of palatable food are controversial and there is no information regarding the effects of TAM on palatable food consumption. The aim of this study was to investigate the effects of chronic treatment with estradiol and/or tamoxifen on feeding behavior in ovariectomized rats exposed to standard chow and palatable foods (Froot Loops® or chocolate)...
July 2, 2013: Physiology & Behavior
https://www.readbyqxmd.com/read/23129422/precocious-hand-use-preference-in-reach-to-eat-behavior-versus-manual-construction-in-1-to-5-year-old-children
#5
Lori-Ann R Sacrey, Benjamin Arnold, Ian Q Whishaw, Claudia L R Gonzalez
The variation in hand use as a function of task and developmental age poses a problem for understanding how and when "handedness," preferred use of one hand, develops. The present cross-section study is the first to contrast hand preference use for the natural and frequently used reach-to-eat movement with a constructional task that requires a very similar reach-to-grasp movement. Thirty children between the ages of 1 and 3 years completed an eating task, in which they grasped small food items (Cheerios™ or Froot Loops™) that they brought to the mouth for eating...
December 2013: Developmental Psychobiology
https://www.readbyqxmd.com/read/23085313/effort-based-reward-ebr-training-enhances-neurobiological-efficiency-in-a-problem-solving-task-insights-for-depression-therapies
#6
Massimo Bardi, Michael True, Catherine L Franssen, Casey Kaufman, Amanda Rzucidlo, Kelly G Lambert
Effort-Based Reward (EBR) training strengthens associations between effort and rewards, leading to increased persistence in an unsolvable task when compared to control animals. EBR training involves placing animals in a test apparatus in which they are trained to dig in mounds to retrieve froot loop rewards (contingent group); these animals are compared to control animals that are given the same number of rewards, regardless of expended effort (noncontingent group). In the current study, the effect of EBR training on performance in a spatial task (Dry Land Maze) was explored to determine cognitive resilience during behavioral testing...
January 15, 2013: Brain Research
https://www.readbyqxmd.com/read/19362119/feeding-elicited-cataplexy-in-orexin-knockout-mice
#7
E L Clark, C R Baumann, G Cano, T E Scammell, T Mochizuki
Mice lacking orexin/hypocretin signaling have sudden episodes of atonia and paralysis during active wakefulness. These events strongly resemble cataplexy, episodes of sudden muscle weakness triggered by strong positive emotions in people with narcolepsy, but it remains unknown whether murine cataplexy is triggered by positive emotions. To determine whether positive emotions elicit murine cataplexy, we placed orexin knockout (KO) mice on a scheduled feeding protocol with regular or highly palatable food. Baseline sleep/wake behavior was recorded with ad libitum regular chow...
July 21, 2009: Neuroscience
https://www.readbyqxmd.com/read/18602935/effects-of-chronic-administration-of-caffeine-and-stress-on-feeding-behavior-of-rats
#8
Leticia Ferreira Pettenuzzo, Cristie Noschang, Eduardo von Pozzer Toigo, Andrelisa Fachin, Deusa Vendite, Carla Dalmaz
Anorectic effects of caffeine are controversial in the literature, while stress and obesity are growing problems in our society. Since many stressed people are coffee drinkers, the objective of the present study was to evaluate the effect of stress and chronic administration of caffeine on feeding behavior and body weight in male and female rats. Wistar rats (both males and females) were divided into 3 groups: control (receiving water), caffeine 0.3 g/L and caffeine 1.0 g/L (in the drinking water). These groups were subdivided into non-stressed and stressed (repeated-restraint stress for 40 days)...
October 20, 2008: Physiology & Behavior
https://www.readbyqxmd.com/read/18191962/both-infantile-stimulation-and-exposure-to-sweet-food-lead-to-an-increased-sweet-food-ingestion-in-adult-life
#9
P P Silveira, A K Portella, L Crema, M Correa, F B Nieto, L Diehl, A B Lucion, C Dalmaz
We have reported that neonatal handling leads to increased sweet food preference in adult life. Our aim was to verify if these differences in feeding behavior appear before puberty, and whether other types of intervention in periadolescence (such as exposure to toys) could interfere with sweet food consumption later in life. Nests of Wistar rats were (1) non-handled or (2) handled (10 min/day) on days 1-10 after birth. Males from these groups were subdivided in two subgroups: one was habituated to sweet food (Froot Loops-Kellogs) in a new environment for 4 days and tested for sweet food preference at age 27 days, before submitting to a new habituation and test for sweet food ingestion again in adult life...
March 18, 2008: Physiology & Behavior
https://www.readbyqxmd.com/read/18155695/behavioral-effects-of-amphetamine-in-streptozotocin-treated-rats
#10
Rajkumar J Sevak, Wouter Koek, Lynette C Daws, William Anthony Owens, Aurelio Galli, Charles P France
Experimentally-induced diabetes can modify the behavioral and neurochemical effects of drugs acting on dopamine systems, possibly through insulin-related regulation of dopamine transporter activity. In this study, several behavioral procedures were used to examine possible changes in sensitivity to amphetamine and other drugs in rats rendered diabetic by a single injection of streptozotocin. Conditioned place preference developed to food (Froot Loops) in both control and diabetic rats, demonstrating that conditioned place preference with tactile stimuli can occur in streptozotocin-treated rats...
February 26, 2008: European Journal of Pharmacology
https://www.readbyqxmd.com/read/17609932/differential-effects-of-self-administered-cocaine-in-adolescent-and-adult-rats-on-stimulus-reward-learning
#11
Kerry A Kerstetter, Kathleen M Kantak
RATIONALE: Adult cocaine addicts, abstinent at the time of testing, show a variety of neurocognitive impairments. Less clear is whether there are differences in the degree of impairment if cocaine use is initiated during adolescence rather than adulthood. OBJECTIVES: Using a preclinical model, we evaluated if stimulus-reward learning was impacted differently in rats exposed to cocaine during adolescence (beginning on postnatal day 37) vs adulthood (beginning on postnatal days 74-79) and then tested after a drug-free period...
October 2007: Psychopharmacology
https://www.readbyqxmd.com/read/17391743/conditioned-place-preferences-cpps-to-high-caloric-snack-foods-in-rat-strains-genetically-prone-vs-resistant-to-diet-induced-obesity-resistance-to-naltrexone-blockade
#12
Patricia A Jarosz, Justin T Kessler, Phawanjit Sekhon, Donald V Coscina
A previous study in our laboratory using Sprague-Dawley (SD) male rats showed that conditioned place preferences (CPPs) can be learned to two different high-caloric "snack foods"--one high in sugar (Froot Loops cereal: FL) vs. one high in fat (Cheetos: C), and that both preferences were mediated by endogenous opioids. Using the same CPP apparatus and procedures, two genetic sub-strains of SD rats, one selectively bred for diet-induced obesity (DIO) vs. another bred for diet resistance to obesity (DR), were used in this investigation...
April 2007: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/16889839/satiety-assessment-in-neonatally-handled-rats
#13
COMPARATIVE STUDY
Patricia Pelufo Silveira, Carla da Silva Benetti, Caroline Ayres, Flavia Quellen Pederiva, Andre Krumel Portella, Aldo Bolten Lucion, Carla Dalmaz
We have previously demonstrated that neonatal handling increases sweet food ingestion. In the present study, we examined whether food intake, using different kinds of food, is altered in neonatally handled animals, with or without inducing satiety using a sucrose solution. Abdominal fat, glycemia and hormones linked to appetite including leptin, ghrelin and insulin were also measured. We tested palatable food consumption in the homecage to verify whether environmental cues could influence ingestion. Nests of Wistar rats were either (1) non-handled or (2) handled (10 min/day)...
October 16, 2006: Behavioural Brain Research
https://www.readbyqxmd.com/read/16540156/effect-of-opioid-antagonism-on-conditioned-place-preferences-to-snack-foods
#14
Patricia A Jarosz, Phawanjit Sekhon, Donald V Coscina
Previous research has shown that food-deprived rats acquire conditioned place preferences (CPPs) to sweet liquids that are largely attenuated by the opioid antagonist naltrexone (NAL). This study determined if ad libitum Chow-fed rats can learn CPPs when given relatively brief exposures to different solid snack foods (SFs) -- one high in sugar (Froot Loops cereal: FL) vs. one high in fat (Cheetos: C). Two groups of 16 male rats were trained during 20-min sessions to eat either FL or C in one side of a three-chambered CPP apparatus vs...
February 2006: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/12486191/modulation-by-central-and-basolateral-amygdalar-nuclei-of-dopaminergic-correlates-of-feeding-to-satiety-in-the-rat-nucleus-accumbens-and-medial-prefrontal-cortex
#15
COMPARATIVE STUDY
Soyon Ahn, Anthony G Phillips
Current studies raise the possibility that subregions within the amygdala may interact with the mesocorticolimbic dopamine (DA) system to subserve specific psychological processes underlying food reward. The present study compared the effect of reversible inactivation of the central nucleus (CeN) versus the basolateral amygdala (BLA) on DA efflux in the nucleus accumbens (NAc) and medial prefrontal cortex (mPFC) in hungry rats that were tested in a food-devaluation procedure. During DA microdialysis experiments, lidocaine, a sodium channel blocker, was delivered via reverse dialysis into the CeN or BLA while rats were given two consecutive meals of Froot Loops...
December 15, 2002: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/11888561/estrous-cycle-and-food-availability-affect-feeding-induced-by-amygdala-5-ht-receptor-blockade
#16
Graham C Parker, Christopher Bishop, Donald V Coscina
We have recently reported that bilateral infusions of the 5-HT receptor antagonist metergoline (MET) into the posterior basolateral amygdala (pBLA) elicit feeding in female rats tested at mid-light cycle. The present study was performed to determine whether (1) testing at two different phases of the estrous cycle, and/or (2) the palatability of the food might modify this effect. Subjects were 18 adult females with bilateral pBLA cannulae. Following familiarization with Froot Loops cereal, a within-subjects design tested all animals for 1- and 2-h food intake under 2 Drug (0...
April 2002: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/11337006/effects-of-amygdala-lesions-on-body-weight-conditioned-taste-aversion-and-neophobia
#17
B L Rollins, S G Stines, H B McGuire, B M King
Female rats with posterodorsal amygdala (PDA), basolateral amygdala (BLA), or sham lesions were compared regarding ad libitum food intake, weight gain, consumption of a novel food, and acquisition of a conditioned taste aversion (CTA). While only the rats with PDA lesions evidenced substantial weight gains at 10 days after surgery eating standard lab chow (25-45 g more than the other groups), only the rats with BLA lesions demonstrated significant deficits in the CTA and neophobia paradigms. Rats with basolateral lesions, on average, took less than 30 s to begin drinking the novel sweetened condensed milk after pairing with illness while the other groups took approximately 15 min to begin drinking...
April 2001: Physiology & Behavior
https://www.readbyqxmd.com/read/11050666/interaction-between-repeated-restraint-stress-and-concomitant-midazolam-administration-on-sweet-food-ingestion-in-rats
#18
P P Silveira, M H Xavier, F H Souza, L P Manoli, R M Rosat, M B Ferreira, C Dalmaz
Emotional changes can influence feeding behavior. Previous studies have shown that chronically stressed animals present increased ingestion of sweet food, an effect reversed by a single dose of diazepam administered before testing the animals. The aim of the present study was to evaluate the response of animals chronically treated with midazolam and/or submitted to repeated restraint stress upon the ingestion of sweet food. Male adult Wistar rats were divided into two groups: controls and exposed to restraint 1 h/day, 5 days/week for 40 days...
November 2000: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/10701665/mother-rats-bar-press-for-pups-effects-of-lesions-of-the-mpoa-and-limbic-sites-on-maternal-behavior-and-operant-responding-for-pup-reinforcement
#19
A Lee, S Clancy, A S Fleming
This series of studies explored the operant response rates for pup-reinforcement of female Sprague Dawley rats that were either postpartum or cycling and sustained lesions of the medial preoptic area (mpoa), the lateral amygdala, the nucleus accumbens, or sham lesions. The last experiment tested the effects on operant responding of preventing direct access to pups in mpoa and sham-lesioned postpartum mothers. All animals were trained prior to mating on an FR-1 bar-press schedule to criterion (50 presses in 30 min) for a food (Froot Loops) reward in an operant chamber...
March 2000: Behavioural Brain Research
https://www.readbyqxmd.com/read/10212050/mother-rats-bar-press-for-pups-effects-of-lesions-of-the-mpoa-and-limbic-sites-on-maternal-behavior-and-operant-responding-for-pup-reinforcement
#20
A Lee, S Clancy, A S Fleming
This series of studies explored the operant response rates for pup-reinforcement of female Sprague Dawley rats that were either postpartum or cycling and sustained lesions of the medial preoptic area (mpoa), the lateral amygdala, the nucleus accumbens, or sham lesions. The last experiment tested the effects on operant responding of preventing direct access to pups in mpoa and sham-lesioned postpartum mothers. All animals were trained prior to mating on an FR-1 bar-press schedule to criterion (50 presses in 30 min) for a food (Froot Loops) reward in an operant chamber...
April 1999: Behavioural Brain Research
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