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https://www.readbyqxmd.com/read/28878635/alcohol-intake-increases-in-adolescent-c57bl-6j-mice-during-intermittent-cycles-of-phase-delayed-long-light-conditions
#1
Joshua J Gamsby, Abby M Pribish, Korey D Stevanovic, Amara Yunus, Danielle Gulick
Adolescents naturally go to bed and awaken late, but are forced to awaken early for school and work. This leads to "social jetlag", a state of circadian desynchrony (CD), in which internal biological rhythms are out of sync with behavioral rhythms. CD is associated with increased alcohol intake in adults, but has been less well-studied in adolescents. The goal of this study was to model adolescent alcohol intake during similar CD conditions in male C57BL/6J mice. Free access alcohol intake, water intake and wheel-running activity were measured during a normal 12HR photoperiod or during alternating photoperiod (Experiment 1: 12 h light for 4 days followed by 18 h light for 3 days, with dark (activity onset) delayed 9 h during the 18HR photoperiod; Experiment 2: 12 h light for 4 days followed by 6 h light for 3 days, with dark onset delayed 3 h during the 6HR photoperiod)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28865114/prenatal-alcohol-exposure-leads-to-enhanced-serine-9-phosphorylation-of-glycogen-synthase-kinase-3%C3%AE-gsk-3%C3%AE-in-the-hippocampal-dentate-gyrus-of-adult-mouse
#2
Lee Anna Cunningham, Jessie Newville, Phillip Tapia, Andrea M Allan, C Fernando Valenzuela
BACKGROUND: The goal of the present study was to evaluate the expression and serine 9 phosphorylation of glycogen synthase kinase (GSK-3β) within the adult hippocampal dentate gyrus (DG) in a preclinical mouse model of fetal alcohol spectrum disorder (FASD). GSK-3β is a multifunctional kinase that modulates many hippocampal processes affected by gestational alcohol, including synaptic plasticity and adult neurogenesis. GSK-3β is a constitutively active kinase that is negatively regulated by phosphorylation at the serine-9 residue...
September 1, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28828224/social-and-environmental-enrichment-has-different-effects-on-ethanol-and-sucrose-consumption-in-mice
#3
Joan Y Holgate, Hilary Garcia, Susmita Chatterjee, Selena E Bartlett
BACKGROUND: Factors leading to the harmful consumption of substances, like alcohol and sucrose, involve a complex interaction of genes and the environment. While we cannot control the genes we inherit, we can modify our environment. Understanding the role that social and environmental experiences play in alcohol and sucrose consumption is critical for developing preventative interventions and treatments for alcohol use disorders and obesity. METHODS: We used the drinking in the dark two-bottle choice (2BC) model of ethanol and sucrose consumption to compare male C57BL/6 mice housed in the IntelliCage (an automated device capable of simultaneously measuring behaviors of up to 16 mice living in an enriched social environment) with mice housed in standard isolated and social environments...
August 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28827047/high-drinking-in-the-dark-hdid-mice-are-sensitive-to-the-effects-of-some-clinically-relevant-drugs-to-reduce-binge-like-drinking
#4
John C Crabbe, Angela R Ozburn, Pamela Metten, Amanda Barkley-Levenson, Jason P Schlumbohm, Stephanie E Spence, Wyatt R Hack, Lawrence C Huang
BACKGROUND: There is a serious public health need for better understanding of alcohol use disorder disease mechanisms and for improved treatments. At this writing, only three drugs are approved by the Food and Drug Administration as medications to treat alcohol use disorders - disulfiram, naltrexone, and acamprosate. Binge drinking is a form of abusive alcohol drinking defined by the NIAAA as a drinking to blood alcohol levels (BALs)>0.08% during a period of approximately 2h. To model genetic risk for binge-like drinking, we have used selective breeding to create a unique animal model, High Drinking in the Dark (HDID) mice...
September 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28820391/deep-brain-stimulation-alters-light-phase-food-intake-microstructure-in-rats
#5
P Prinz, P Kobelt, S Scharner, M Goebel-Stengel, D Harnack, K Faust, Y Winter, M Rose, A Stengel
Treatment of eating disorders like obesity or anorexia is challenging. Options are limited and new approaches desired. An interesting approach is the application of deep brain stimulation (DBS). The nucleus accumbens (NAcc) is part of the food reward system. A pilot study reported that DBS of the NAcc shell modulates food intake and body weight in rats. Underlying mechanisms such as the food intake microstructure are unknown so far. Normal weight female Sprague-Dawley rats were equipped with a custom-made DBS electrode placed unilaterally in the NAcc shell...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
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
#6
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/28769782/toll-like-receptor-2-is-a-regulator-of-circadian-active-and-inactive-state-consolidation-in-c57bl-6-mice
#7
Nicholas W DeKorver, Tammy R Chaudoin, Stephen J Bonasera
Regulatory systems required to maintain behavioral arousal remain incompletely understood. We describe a previously unappreciated role that toll-like receptor 2 (Tlr2, a membrane bound pattern recognition receptor that recognizes specific bacterial, viral, and fungal peptides), contributes toward regulation of behavioral arousal. In 4-4.5 month old mice with constitutive loss of Tlr2 function (Tlr2(-/-) mice), we note a marked consolidation in the circadian pattern of both active and inactive states. Specifically, Tlr2(-/-) mice demonstrated significantly fewer but longer duration active states during the circadian dark cycle, and significantly fewer but longer duration inactive states during the circadian light cycle...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28765080/activation-of-extrasynaptic-%C3%AE-gabaa-receptors-globally-or-within-the-posterior-vta-has-estrous-dependent-effects-on-consumption-of-alcohol-and-estrous-independent-effects-on-locomotion
#8
Laverne C Melón, Zachary T Nolan, Delphine Colar, Eileen M Moore, Stephen L Boehm
Recent reports support higher than expected rates of binge alcohol consumption among women and girls. Unfortunately, few studies have assessed the mechanisms underlying this pattern of intake in females. Studies in males suggest that alcohol concentrations relevant to the beginning stages of binge intoxication may selectively target tonic GABAergic inhibition mediated by GABAA receptor subtypes expressing the δ-subunit protein (δ-GABAARs). Indeed, administration of agonists that interact with these δ-GABAARs prior to alcohol access can abolish binge drinking behavior in male mice...
August 15, 2017: Hormones and Behavior
https://www.readbyqxmd.com/read/28748375/attenuation-of-ethanol-abstinence-induced-anxiety-and-depressive-like-behavior-by-the-phosphodiesterase-4-inhibitor-rolipram-in-rodents
#9
Mei-Fang Gong, Rui-Ting Wen, Ying Xu, Jian-Chun Pan, Ning Fei, Yan-Meng Zhou, Jiang-Ping Xu, Jian-Hui Liang, Han-Ting Zhang
RATIONALE: Withdrawal symptoms stand as a core feature of alcohol dependence. Our previous results have shown that inhibition of phosphodiesterase-4 (PDE4) decreased ethanol seeking and drinking in alcohol-preferring rodents. However, little is known about whether PDE4 is involved in ethanol abstinence-related behavior. OBJECTIVE: The objective of this study was to characterize the role of PDE4 in the development of anxiety- and depressive-like behavior induced by abstinence from ethanol exposure in different animal models...
July 27, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28729845/negative-affect-and-excessive-alcohol-intake-incubate-during-protracted-withdrawal-from-binge-drinking-in-adolescent-but-not-adult-mice
#10
Kaziya M Lee, Michal A Coehlo, Noah R Solton, Karen K Szumlinski
Binge-drinking is common in underage alcohol users, yet we know little regarding the biopsychological impact of binge-drinking during early periods of development. Prior work indicated that adolescent male C57BL6/J mice with a 2-week history of binge-drinking (PND28-41) are resilient to the anxiogenic effects of early alcohol withdrawal. Herein, we employed a comparable Drinking-in-the-Dark model to determine how a prior history of binge-drinking during adolescence (EtOH(adolescents)) influences emotionality (assayed with the light-dark box, marble burying test, and the forced swim test) and the propensity to consume alcohol in later life, compared to animals without prior drinking experience...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28679010/factors-influencing-injury-severity-of-bicyclists-involved-in-crashes-with-motor-vehicles-bike-lanes-alcohol-lighting-speed-and-helmet-use
#11
COMPARATIVE STUDY
Kelsey Helak, Dietrich Jehle, Daniel McNabb, Amanda Battisti, Steward Sanford, Mary Claire Lark
OBJECTIVES: In 2014, 726 bicyclists were killed and an additional 50,000 were injured in crashes with motor vehicles. The number of cyclists in the United States is increasing, and as a result there has been a call for more bike lanes. We examined the difference in the severity of injury of bicyclists involved in motor vehicle crashes when riding in the traffic lane compared with riding in a bike lane or on a paved shoulder. We also controlled for other safety factors, including alcohol use, travel speed, posted speed, helmet usage, and lighting conditions to determine their impact on bicyclist safety...
July 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28663116/short-term-selection-for-high-and-low-ethanol-intake-yields-differential-sensitivity-to-ethanol-s-motivational-effects-and-anxiety-like-responses-in-adolescent-wistar-rats
#12
Macarena Soledad Fernández, Bárbara Báez, Ana Bordón, Laura Espinosa, Eliana Martínez, Ricardo Marcos Pautassi
Alcohol use disorders are modulated by genetic factors, but the identification of specific genes and their concomitant biological changes that are associated with a higher risk for these disorders has proven difficult. Alterations in the sensitivity to the motivational effects of ethanol may be one way by which genes modulate the initiation and escalation of ethanol intake. Rats and mice have been selectively bred for high and low ethanol consumption during adulthood. However, selective breeding programs for ethanol intake have not focused on adolescence...
June 27, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28655697/banana-fruit-pulp-and-peel-involved-in-antianxiety-and-antidepressant-effects-while-invigorate-memory-performance-in-male-mice-possible-role-of-potential-antioxidants
#13
Noreen Samad, Aqsa Muneer, Najeeb Ullah, Aqal Zaman, M Mazhar Ayaz, Ijaz Ahmad
The present study was aimed to investigate the anti-stress and memory enhancing effects of banana (Musa sapientum L.) fruit pulp and peel extract in male mice. Locally bred albino Wistar mice were divided into control and 2 test groups (n=10). Control rats received drinking water while test groups were treated with banana fruit pulp (600 mg/kg; oral administration) and extract of banana peel (400mg/kg; oral administration). Behavioral activities of animals were monitored 14 days post administration of banana pulp and peel extract...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28651478/interval-timing-is-preserved-despite-circadian-desynchrony-in-rats-constant-light-and-heavy-water-studies
#14
Christian C Petersen, Ralph E Mistlberger
The mechanisms that enable mammals to time events that recur at 24-h intervals (circadian timing) and at arbitrary intervals in the seconds-to-minutes range (interval timing) are thought to be distinct at the computational and neurobiological levels. Recent evidence that disruption of circadian rhythmicity by constant light (LL) abolishes interval timing in mice challenges this assumption and suggests a critical role for circadian clocks in short interval timing. We sought to confirm and extend this finding by examining interval timing in rats in which circadian rhythmicity was disrupted by long-term exposure to LL or by chronic intake of 25% D2O...
June 1, 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/28638713/the-behavioral-and-physiological-effects-of-high-fat-diet-and-alcohol-consumption-sex-differences-in-c57bl6-j-mice
#15
Rachel R Gelineau, Nicole L Arruda, Jasmin A Hicks, Isabella Monteiro De Pina, Aikaterini Hatzidis, Joseph A Seggio
BACKGROUND AND OBJECTIVE: Animal studies can be a great tool to investigate sex differences in a variety of different ways, including behavioral and physiological responses to drug treatments and different "lifestyle variables" such as diets. Consumption of both high-fat diets and alcohol is known to affect anxiety behaviors and overall health. This project investigated how high-fat diet and alcohol access and its combination affected the behavior and physiology of male and female C57BL/6J mice...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28630783/highly-sensitive-colorimetric-assay-for-determining-fe-3-based-on-gold-nanoparticles-conjugated-with-glycol-chitosan
#16
Kyungmin Kim, Yun-Sik Nam, Yeonhee Lee, Kang-Bong Lee
A highly sensitive and simple colorimetric assay for the detection of Fe(3+) ions was developed using gold nanoparticles (AuNPs) conjugated with glycol chitosan (GC). The Fe(3+) ion coordinates with the oxygen atoms of GC in a hexadentate manner (O-Fe(3+)-O), decreasing the interparticle distance and inducing aggregation. Time-of-flight secondary ion mass spectrometry showed that the bound Fe(3+) was coordinated to the oxygen atoms of the ethylene glycol in GC, which resulted in a significant color change from light red to dark midnight blue due to aggregation...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28575029/new-evidence-about-the-dark-side-of-social-cohesion-in-promoting-binge-drinking-among-adolescents
#17
Juliana Gabrielle Martins, Haroldo Neves de Paiva, Paula Cristina Pelli Paiva, Raquel Conceição Ferreira, Isabela Almeida Pordeus, Patricia Maria Zarzar, Ichiro Kawachi
Adolescence is characterized by heightened susceptibility to peer influence, which makes adolescents vulnerable to initiating or maintaining risky habits such as heavy drinking. The aim of the study was to investigate the association of social capital with longitudinal changes in the frequency of binge drinking among adolescents at public and private high schools in the city of Diamantina, Brazil. This longitudinal study used two waves of data collected when the adolescents were 12 and 13 years old. At the baseline assessment in 2013 a classroom survey was carried out with a representative sample of 588 students...
2017: PloS One
https://www.readbyqxmd.com/read/28516787/antiproliferative-effect-of-a-food-coloring-on-colon-cancer-cell-line
#18
M Norizadeh Tazehkand
4-MEI (4-Methylimidazole) is used as a chemical intermediate, crude material or component in the manufacture of pharmaceuticals, photographic and photothermographic chemicals, dyes and pigments and agricultural chemicals. 4-MEI is unintentionally found in our food. Caramel colour (which is the most used beverage colouring and food), dark beers and common brands of cola drinks may comprise more than 100 μg of this compound per 12-ounce serving. 4-MEI is widely used by people and colon cancer is common in our countries...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/28497360/neuroprotective-effects-of-nigella-sativa-extract-upon-the-hippocampus-in-ptu-induced-hypothyroidism-juvenile-rats-a-stereological-study
#19
Farimah Asiaei, Alireza Fazel, Ali Akbar Rajabzadeh, Mahmoud Hosseini, Farimah Beheshti, Masoumeh Seghatoleslam
This study aimed to examine the neuroprotective effects of Nigella sativa (N. sativa) in the hippocampus of propylthiouracil (PTU)-induced hypothyroid rats during neonatal and juvenile growth. Twenty- five pregnant rats from early gestation (GD 0) were divided into five groups: (1) control (received drinking water), (2) PTU (received 0.005% PTU in drinking water), (3-5) PTU + NS 0.05%, PTU + NS 0.1%, PTU + NS 0.2% (along with PTU, received 0.05%, 0.1% and 0.2% W/V of N. sativa respectively) and treatment continued until postnatal day 60 (PN 60)...
May 11, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28477089/the-phosphodiesterase-4-inhibitor-roflumilast-decreases-ethanol-consumption-in-c57bl-6j-mice
#20
Xin Liu, Pi-Da Hao, Ming-Feng Yang, Jing-Yi Sun, Lei-Lei Mao, Cun-Dong Fan, Zong-Yong Zhang, Da-Wei Li, Xiao-Yi Yang, Bao-Liang Sun, Han-Ting Zhang
RATIONALE: Alcohol use disorders have become one of the most damaging psychiatric disorders in the world; however, there are no ideal treatments in clinic. Phosphodiesterase-4 (PDE4), an enzyme that specifically hydrolyzes intracellular cyclic AMP (cAMP), has been involved in alcohol use disorders. Roflumilast is the first PDE4 inhibitor approved for treatment of chronic obstructive pulmonary diseases in clinic. It was of particular interest to researchers to determine whether roflumilast altered ethanol consumption...
August 2017: Psychopharmacology
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