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https://www.readbyqxmd.com/read/29290043/the-effects-of-vitamin-e-on-brain-derived-neurotrophic-factor-tissues-oxidative-damage-and-learning-and-memory-of-juvenile-hypothyroid-rats
#1
Yousef Baghcheghi, Farimah Beheshti, Mohammad Naser Shafei, Hossein Salmani, Hamid Reza Sadeghnia, Mohammad Soukhtanloo, Akbar Anaeigoudari, Mahmoud Hosseini
The effects of vitamin E (Vit E) on brain derived neurotrophic factor (BDNF) and brain tissues oxidative damage as well as on learning and memory impairments in juvenile hypothyroid rats were examined. The rats were grouped as: (1) Control; (2) Propylthiouracil (PTU); (3) PTU-Vit E and (4) Vit E. PTU was added to their drinking water (0.05%) during 6 weeks. Vit E (20 mg/kg) was daily injected (IP). Morris water maze (MWM) and passive avoidance (PA) were carried out. The animals were deeply anesthetized and the brain tissues were removed for biochemical measurements...
December 30, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29288725/both-ketamine-and-nbqx-attenuate-alcohol-drinking-in-male-wistar-rats
#2
Jana Ruda-Kucerova, Zuzana Babinska, Matej Luptak, Bruk Getachew, Yousef Tizabi
The devastating consequences of alcohol-use disorder (AUD) on the individual and the society are well established. Current treatments of AUD encompass various strategies, all of which have only modest effectiveness. Hence, there is a critical need to develop more efficacious therapies. Recently, specific glutamatergic receptors have been identified as potential novel targets for intervention in AUD. Thus, the current study was designed to evaluate the effects of acute administration of sub-anesthetic doses of ketamine, an NMDA receptor antagonist, as well as NBQX, an AMPA/kainate receptor antagonist on alcohol intake and its possible behavioural consequences...
December 27, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/29281037/central-administration-of-cyclosporine-a-decreases-ethanol-drinking
#3
Patrick J Ronan, Sydney A Strait, Geralyn M Palmer, Thomas P Beresford
Aims: Abstinence among alcohol dependent liver graft recipients is remarkably high. The routine use of anti-immune agents in these patients led to rodent studies showing that immunosuppressants acting through inhibition of calcineurin (CLN) are highly effective in decreasing alcohol consumption. It remained unclear, however, whether the decreased alcohol consumption in rodent models is mediated through peripheral suppression of immune response or centrally through direct inhibition of cyclophilin-CLN in the brain...
December 21, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/29251283/genome-wide-expression-profiles-drive-discovery-of-novel-compounds-that-reduce-binge-drinking-in-mice
#4
Laura B Ferguson, Angela R Ozburn, Igor Ponomarev, Pamela Metten, Matthew Reilly, John C Crabbe, R Adron Harris, R Dayne Mayfield
Transcriptome-based drug discovery has identified new treatments for some complex diseases, but has not been applied to alcohol use disorder (AUD) or other psychiatric diseases, where there is a critical need for improved pharmacotherapies. High Drinking in the Dark (HDID-1) mice are a genetic model of AUD risk that have been selectively bred (from the HS/Npt line) to achieve intoxicating blood alcohol levels (BALs) after binge-like drinking. We compared brain gene expression of HDID-1 and HS/Npt mice to determine a molecular signature for genetic risk for high intensity, binge-like drinking...
December 18, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29227676/studying-sex-differences-in-animal-models-of-addiction-an-emphasis-on-alcohol-related-behaviors
#5
Elisa R Hilderbrand, Amy W Lasek
Animal models are essential for understanding the biological factors that contribute to drug and alcohol addiction and discovering new pharmacotherapies to treat these disorders. Alcohol (ethanol) is the most commonly abused drug in the world, and as the prevalence of alcohol use disorder (AUD) increases, so does the need for effective pharmacotherapies. In particular, treatments with high efficacy in the growing number of female AUD sufferers are needed. Female animals remain underrepresented in biomedical research and sex differences in the brain's response to alcohol are poorly understood...
December 11, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29207513/methylxanthine-content-in-commonly-consumed-foods-in-spain-and-determination-of-its-intake-during-consumption
#6
Juan M Sanchez
Methylxanthines present psychostimulant effects. These compounds have low toxicity and their consumption at moderate levels presents some beneficial health effects, whereas some significant risk appears at high levels. Samples of common types of methylxanthine-containing beverages and foods consumed in Spain were analyzed to determine their content. Caffeine was the methylxanthine that was most found in the samples investigated. Instant coffees gave the highest caffeine percentage (18-44 mg·g-1). Green and scented teas were found to have a caffeine dry-weight content (8-26 mg·g-1) equivalent to ground coffees (13-23 mg·g-1), but black and pu-erh teas (18-30 mg·g-1) had a higher caffeine content...
December 4, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29205408/ovarian-hormones-contribute-to-high-levels-of-binge-like-drinking-by-female-mice
#7
Rosalba Satta, Elisa R Hilderbrand, Amy W Lasek
BACKGROUND: Recently, the incidence of binge drinking by women has increased. Binge drinking is detrimental to women's health, yet the biological mechanisms that promote excessive drinking by women are not well understood. One method of assessing binge-like ethanol (EtOH) consumption in mice is the drinking in the dark (DID) test, in which mice drink sufficient EtOH to achieve intoxication. In this study, we directly compared male, female, and ovariectomized (OVX) mice for DID and tested whether 17β-estradiol (E2) contributes to DID...
December 5, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29179976/vitamin-c-prevents-hypothyroidism-associated-neuronal-damage-in-the-hippocampus-of-neonatal-and-juvenile-rats-a-stereological-study
#8
Elnaz Khordad, Fatemeh Alipour, Farimah Beheshti, Mahmoud Hosseini, Ali Akbar Rajabzadeh, Farimah Asiaei, Masoumeh Seghatoleslam
Hypothyroidism causes an imbalance in antioxidant and pro-oxidants criteria in the brain and enhances the concentration of reactive oxygen species (ROS), and neuronal damage has been observed following an excessive ROS. The main purpose of this study was to examine the preventive effect of vitamin C on hypothyroidism associated neuronal damage in the hippocampus of neonatal and juvenile rats. Pregnant rats after delivery of their pups were randomly divided into four groups and treated with (1) normal drinking water as a control group, (2) Propylthiouracil (PTU) 0...
November 24, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/29178012/administration-of-allium-cepa-l-bulb-attenuates-stress-produced-anxiety-and-depression-and-improves-memory-in-male-mice
#9
Noreen Samad, Ayesha Saleem
In view of anxiolytic, antidepressant and memory strengthen properties of Allium cepa (AC; onion) bulb in various investigations; we aimed to evaluate the useful effects of onion on single immobilization stress -induced biochemical and behavioral changes. Mice in test group were treated with AC powder (200 mg/kg/day), dissolved in water, while the control group were received drinking water for 14 days. After 14 days control and AC treated mice were further divided into unstressed and stressed groups. Animals in the stressed group were subjected to immobilization stress for 2 h...
November 25, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29144544/effects-of-nicotine-on-alcohol-drinking-in-female-mice-selectively-bred-for-high-or-low-alcohol-preference
#10
Marcus M Weera, Molly A Fields, Danielle N Tapp, Nicholas J Grahame, Julia A Chester
BACKGROUND: Studies show that repeated nicotine use associates with high alcohol consumption in humans, and that nicotine exposure sometimes increases alcohol consumption in animal models. However, the relative roles of genetic predisposition to high alcohol consumption, the alcohol drinking patterns, and the timing of nicotine exposure both with respect to alcohol drinking and developmental stage remain unclear. The studies here manipulated all these variables, using mice selectively bred for differences in free-choice alcohol consumption to elucidate the role of genetics and nicotine exposure in alcohol consumption behaviors...
November 16, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/29111360/voluntary-binge-like-ethanol-consumption-site-specifically-increases-c-fos-immunoexpression-in-male-c57bl6-j-mice
#11
Nathan W Burnham, Todd E Thiele
The assessment of binge ethanol-induced neuronal activation, using c-Fos immunoreactivity (IR) as a marker of neuronal activity, is typically accomplished via forced ethanol exposure, such as intraperitoneal injection or gavage. Neuronal activity using a voluntary binge-like drinking model, such as "drinking-in-the-dark" (DID), has not been thoroughly explored. Additionally, studies assessing ethanol-elicited neuronal activation may or may not involve stereotaxic surgery, which could impact c-Fos IR. The experiments detailed herein aimed to assess the effects of voluntary binge-like ethanol consumption on c-Fos IR in brain regions implicated in ethanol intake in animals with and without surgery experience...
October 27, 2017: Neuroscience
https://www.readbyqxmd.com/read/29109060/cannabinoid-1-receptor-neutral-antagonist-reduces-binge-like-alcohol-consumption-and-alcohol-induced-accumbal-dopaminergic-signaling
#12
Andrea Balla, Bin Dong, Borehalli M Shilpa, Kiran Vemuri, Alexandros Makriyannis, Subhash C Pandey, Henry Sershen, Raymond F Suckow, K Yaragudri Vinod
Binge alcohol (ethanol) drinking is associated with profound adverse effects on our health and society. Rimonabant (SR141716A), a CB1 receptor inverse agonist, was previously shown to be effective for nicotine cessation and obesity. However, studies using rimonabant were discontinued as it was associated with an increased risk of depression and anxiety. In the present study, we examined the pharmacokinetics and effects of AM4113, a novel CB1 receptor neutral antagonist on binge-like ethanol drinking in C57BL/6J mice using a two-bottle choice drinking-in-dark (DID) paradigm...
November 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29109058/homer2-within-the-central-nucleus-of-the-amygdala-modulates-withdrawal-induced-anxiety-in-a-mouse-model-of-binge-drinking
#13
K M Lee, M A Coelho, K R Sern, K K Szumlinski
A history of binge-drinking decreases protein expression of the glutamate-related scaffolding protein Homer2 within the central nucleus of the amygdala (CEA), coinciding with behavioral signs of negative affect. To assess the functional relevance of this protein change for withdrawal-induced hyper-anxiety, adult (PND 56) and adolescent (PND 28) male C57BL/6J mice were administered an intra-CEA infusion of an adeno-associated viral vector (AAV) carrying either cDNA to express Homer2 (H2-cDNA) or GFP as control...
November 3, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/29090295/neuroprotective-action-of-tea-polyphenols-on-oxidative-stress-induced-apoptosis-through-the-activation-of-the-trkb-creb-bdnf-pathway-and-keap1-nrf2-signaling-pathway-in-sh-sy5y-cells-and-mice-brain
#14
Guoyuan Qi, Yashi Mi, Yiwen Wang, Runnan Li, Shuxian Huang, Xingyu Li, Xuebo Liu
Many studies have shown that oxidative stress is a major cause of cellular injuries in a variety of human diseases including cognitive impairment. Tea polyphenols (TPs), natural plant flavonoids found in tea plant leaves, possess the bioactivity to affect the pathogenesis of several chronic diseases via antioxidant associated mechanisms. However, the possible antioxidant and neuroprotective properties of TPs in the brain of mice housed in constant darkness and in H2O2-stimulated SH-SY5Y cells are yet to be elucidated...
November 1, 2017: Food & Function
https://www.readbyqxmd.com/read/29066961/different-molecular-behavioral-endophenotypes-in-c57bl-6j-mice-predict-the-impact-of-ox1-receptor-blockade-on-binge-like-ethanol-intake
#15
Manuel Alcaraz-Iborra, Francisco Navarrete, Elisa Rodríguez-Ortega, Leticia de la Fuente, Jorge Manzanares, Inmaculada Cubero
Ethanol (EtOH) research has focused on stages of dependence. It is of paramount importance to more deeply understand the neurobehavioral factors promoting increased risk for EtOH binge drinking during the early stages of the addiction cycle. The first objective of this study was to evaluate whether C57BL/6J mice showing high drinking in the dark (DID) exhibit neurobehavioral traits known to contribute to EtOH binge-drinking disorders. Comparing high vs. low drinkers (HD/LD), we evaluated different types of basal anxiety-like responses, EtOH preference and sensitivity to the reinforcing properties of EtOH, and basal mRNA expression of the OX1/OX2 receptors (OX1r/OX2r) within the prefrontal cortex (PFC) and the nucleus accumbens (NAcc)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29033803/moderate-maternal-alcohol-exposure-on-gestational-day-12-impacts-anxiety-like-behavior-in-offspring
#16
Siara K Rouzer, Jesse M Cole, Julia M Johnson, Elena I Varlinskaya, Marvin R Diaz
Among the numerous consequences of prenatal alcohol exposure (PAE) is an increase in anxiety-like behavior that can prove debilitating to daily functioning. A significant body of literature has linked gestational day 12 (G12) heavy ethanol exposure with social anxiety, evident in adolescent males and females. However, the association between non-social anxiety-like behavior and moderate alcohol exposure, a more common pattern of drinking in pregnant women, is yet unidentified. To model moderate PAE (mPAE), we exposed pregnant Sprague-Dawley rats to either room air or vaporized ethanol for 6 h on G12...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28969693/effects-of-melatonin-administration-on-embryo-implantation-and-offspring-growth-in-mice-under-different-schedules-of-photoperiodic-exposure
#17
Lu Zhang, Zhenzhen Zhang, Feng Wang, Xiuzhi Tian, Pengyun Ji, Guoshi Liu
BACKGROUND: Embryo implantation is crucial for animal reproduction. Unsuccessful embryo implantation leads to pregnancy failure, especially in human-assisted conception. Environmental factors have a profound impact on embryo implantation. Because people are being exposed to more light at night, the influence of long-term light exposure on embryo implantation should be explored. METHODS: The effects of long photoperiodic exposure and melatonin on embryo implantation and offspring growth were examined...
October 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28947376/antagonising-tlr4-trif-signalling-before-or-after-a-low-dose-alcohol-binge-during-adolescence-prevents-alcohol-drinking-but-not-seeking-behaviour-in-adulthood
#18
Jonathan Henry Jacobsen, Femke Buisman-Pijlman, Sanam Mustafa, Kenner C Rice, Mark R Hutchinson
Adolescents frequently engage in risky behaviours such as binge drinking. Binge drinking, in turn, perturbs neurodevelopment reinforcing reward seeking behaviour in adulthood. Current animal models are limited in their portrayal of this behaviour and the assessment of neuroimmune involvement (specifically the role of Toll-like receptor 4 (TLR4)). Therefore, the aims of this project were to develop a more relevant animal model of adolescent alcohol exposure and to characterise its effects on TLR4 signalling and alcohol-related behaviours later life...
September 22, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28878635/alcohol-intake-increases-in-adolescent-c57bl-6j-mice-during-intermittent-cycles-of-phase-delayed-long-light-conditions
#19
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
#20
Lee Anna Cunningham, Jessie Newville, Lu Li, Phillip Tapia, Andrea M Allan, C Fernando Valenzuela
BACKGROUND: The goal of this 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 disorders. 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...
November 2017: Alcoholism, Clinical and Experimental Research
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