keyword
MENU ▼
Read by QxMD icon Read
search

serotonin and accumbens

keyword
https://www.readbyqxmd.com/read/28287691/effects-of-housing-on-methamphetamine-induced-neurotoxicity-and-spatial-learning-and-memory
#1
Arnold Gutierrez, Sarah A Jablonski, Robyn M Amos-Kroohs, Anna C Barnes, Michael T Williams, Charles V Vorhees
Severe stress potentiates methamphetamine (MA) neurotoxicity. However, whether moderate stress increases or decreases the neurotoxic effects of MA is unknown. We assessed the effects of MA (4 x 10 mg/kg at 2 h intervals) in combination with prior barren-cage housing in adult male Sprague-Dawley rats on monoamines and glial fibrillary acid protein (GFAP) in one cohort and spatial learning and memory in the Morris water maze in another cohort. MA reduced dopamine (DA) and serotonin (5-HT) in the neostriatum and nucleus accumbens, 5-HT in the hippocampus, and increased GFAP in neostriatum and nucleus accumbens compared with saline controls...
March 13, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28266501/the-novel-modafinil-analog-jjc8-016-as-a-potential-cocaine-abuse-pharmacotherapeutic
#2
Hai-Ying Zhang, Guo-Hua Bi, Hong-Ju Yang, Yi He, Gilbert Xue, Jian-Jing Cao, Gianluigi Tanda, Eliot L Gardner, Amy Hauck Newman, Zheng-Xiong Xi
(±)Modafinil ((±)MOD) and its R-enantiomer (R-modafinil; R-MOD) have been investigated for their potential as treatments for psychostimulant addiction. We recently reported a series of (±)MOD analogues, of which JJC8-016 (N-(2-((bis(4-fluorophenyl)methyl)thio)ethyl)-3-phenylpropan-1-amine) was selected for further development. JJC8-016 and R-MOD were evaluated for binding across ~70 receptors, transporters and enzymes. Although at a concentration of 10 μM, there were many hits for JJC8-016, binding affinities in the range of its DAT affinity were only observed at the serotonin transporter (SERT), dopamine D2-like and sigma1 receptors...
March 7, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28225852/tryptophan-overloading-activates-brain-regions-involved-with-cognition-mood-and-anxiety
#3
Luana C A Silva, Milena B Viana, José S Andrade, Melyssa A Souza, Isabel C Céspedes, Vânia D'Almeida
Tryptophan is the only precursor of serotonin and mediates serotonergic activity in the brain. Previous studies have shown that the administration of tryptophan or tryptophan depletion significantly alters cognition, mood and anxiety. Nevertheless, the neurobiological alterations that follow these changes have not yet been fully investigated. The aim of this study was to verify the effects of a tryptophan-enriched diet on immunoreactivity to Fos-protein in the rat brain. Sixteen male Wistar rats were distributed into two groups that either received standard chow diet or a tryptophan-enriched diet for a period of thirty days...
February 16, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28115218/contrasting-effects-of-5-ht3-receptor-stimulation-of-the-nucleus-accumbens-or-ventral-tegmentum-on-food-intake-in-the-rat
#4
Wayne E Pratt, Peagan Lin, Zachary Pierce-Messick, Adeolu O Ilesanmi, Kara A Clissold
Although serotonin (5-HT) signaling is known to regulate food intake and energy homeostasis, the roles of the 5-HT3 receptor in feeding processes have been elusive. 5-HT3 receptors are found throughout mesolimbic circuitry that promote feeding not only in response to hunger, but also to the palatable and rewarding properties of food. These experiments examined if stimulation or blockade of the 5-HT3 receptor of the nucleus accumbens (NAcc) or ventral tegmentum affected food intake in the rat in response to hunger or the presence of a palatable diet...
April 14, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28059046/long-term-effects-of-aripiprazole-exposure-on-monoaminergic-and-glutamatergic-receptor-subtypes-comparison-with-cariprazine
#5
Yong Kee Choi, Nika Adham, Béla Kiss, István Gyertyán, Frank I Tarazi
OBJECTIVE: This study examined the chronic effects of aripiprazole and cariprazine on serotonin (5-HT1A and 5-HT2A) and glutamate (NMDA and AMPA) receptor subtypes. In addition, the effects of aripiprazole on D2 and D3 receptors were tested and compared with previously reported cariprazine data. METHODS: Rats received vehicle, aripiprazole (2, 5, or 15 mg/kg), or cariprazine (0.06, 0.2, or 0.6 mg/kg) for 28 days. Receptor levels were quantified using autoradiographic assays on brain sections from the medial prefrontal cortex (MPC), dorsolateral frontal cortex (DFC), nucleus accumbens (NAc), caudate-putamen medial (CPu-M), caudate-putamen lateral (CPu-L), hippocampal CA1 (HIPP-CA1) and CA3 (HIPP-CA3) regions, and the entorhinal cortex (EC)...
January 6, 2017: CNS Spectrums
https://www.readbyqxmd.com/read/27991542/adjunctive-treatment-of-brexpiprazole-with-fluoxetine-shows-a-rapid-antidepressant-effect-in-social-defeat-stress-model-role-of-bdnf-trkb-signaling
#6
Min Ma, Qian Ren, Chun Yang, Ji-Chun Zhang, Wei Yao, Chao Dong, Yuta Ohgi, Takashi Futamura, Kenji Hashimoto
Addition of low doses of the atypical antipsychotic drug brexpiprazole with selective serotonin reuptake inhibitors (SSRIs) could promote antidepressant effect in patients with major depressive disorder although the precise mechanisms underlying the action of the combination are unknown. Combination of low dose of brexpiprazole (0.1 mg/kg) and SSRI fluoxetine (10 mg/kg) could promote a rapid antidepressant effect in social defeat stress model although brexpiprazole or fluoxetine alone did not show antidepressant effect...
December 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27987210/anti-anhedonic-effect-of-selective-serotonin-reuptake-inhibitors-with-affinity-for-sigma-1-receptors-in-picrotoxin-treated-mice
#7
S Hasebe, Y Ago, Y Watabe, S Oka, N Hiramatsu, T Tanaka, C Umehara, H Hashimoto, K Takuma, T Matsuda
BACKGROUND AND PURPOSE: Prefrontal dopamine release by the combined activation of 5-HT1A and sigma-1 (σ1 ) receptors is enhanced by the GABAA receptor antagonist picrotoxin in mice. Here, we examined whether this neurochemical event was accompanied by behavioural changes. EXPERIMENTAL APPROACH: Male mice were treated with picrotoxin to decrease GABAA receptor function. Their anhedonic behaviour was measured using the female encounter test. The expression of c-Fos was determined immunohistochemically...
February 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27957784/d-cycloserine-enhanced-extinction-of-cocaine-induced-conditioned-place-preference-is-attenuated-in-serotonin-transporter-knockout-rats
#8
Peter Karel, Francesca Calabrese, Marco Riva, Paola Brivio, Bas Van der Veen, Liesbeth Reneman, Michel Verheij, Judith Homberg
d-Cycloserine (DCS), a partial NMDA receptor agonist, has been proposed as a cognitive enhancer to facilitate the extinction of drug-related memories. However, it is unknown whether there are individual differences in the efficacy of DCS. Here, we set out to investigate the influence of serotonin transporter (5-HTT) genotype on DCS treatment outcome and the underlying neural mechanism. To that end, we first determined the mRNA levels of several NMDA receptor subunits and observed a reduction in NR1/NR2C receptors in the ventromedial prefrontal cortex and nucleus accumbens of 5-HTT(-/-) compared with 5-HTT(+/+) rats...
December 12, 2016: Addiction Biology
https://www.readbyqxmd.com/read/27903793/the-serotonin-5-ht2c-receptor-and-the-non-addictive-nature-of-classic-hallucinogens
#9
Clinton E Canal, Kevin S Murnane
Classic hallucinogens share pharmacology as serotonin 5-HT2A, 5-HT2B, and 5-HT2C receptor agonists. Unique among most other Schedule 1 drugs, they are generally non-addictive and can be effective tools in the treatment of addiction. Mechanisms underlying these attributes are largely unknown. However, many preclinical studies show that 5-HT2C agonists counteract the addictive effects of drugs from several classes, suggesting this pharmacological property of classic hallucinogens may be significant. Drawing from a comprehensive analysis of preclinical behavior, neuroanatomy, and neurochemistry studies, this review builds rationale for this hypothesis, and also proposes a testable, neurobiological framework...
January 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/27888043/infusion-of-fluoxetine-a-serotonin-reuptake-inhibitor-in-the-shell-region-of-the-nucleus-accumbens-increases-blood-glucose-concentrations-in-rats
#10
C Diepenbroek, M Rijnsburger, L Eggels, K M van Megen, M T Ackermans, E Fliers, A Kalsbeek, M J Serlie, S E la Fleur
The brain is well known to regulate blood glucose, and the hypothalamus and hindbrain, in particular, have been studied extensively to understand the underlying mechanisms. Nuclei in these regions respond to alterations in blood glucose concentrations and can alter glucose liver output or glucose tissue uptake to maintain blood glucose concentrations within strict boundaries. Interestingly, several cortico-limbic regions also respond to alterations in glucose concentrations and have been shown to project to hypothalamic nuclei and glucoregulatory organs...
January 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/27857753/serotonin-regulates-brain-derived-neurotrophic-factor-expression-in-select-brain-regions-during-acute-psychological-stress
#11
De-Guo Jiang, Shi-Li Jin, Gong-Ying Li, Qing-Qing Li, Zhi-Ruo Li, Hong-Xia Ma, Chuan-Jun Zhuo, Rong-Huan Jiang, Min-Jie Ye
Previous studies suggest that serotonin (5-HT) might interact with brain-derived neurotrophic factor (BDNF) during the stress response. However, the relationship between 5-HT and BDNF expression under purely psychological stress is unclear. In this study, one hour before psychological stress exposure, the 5-HT1A receptor agonist 8-OH-DPAT or antagonist MDL73005, or the 5-HT2A receptor agonist DOI or antagonist ketanserin were administered to rats exposed to psychological stress. Immunohistochemistry and in situ hybridization revealed that after psychological stress, with the exception of the ventral tegmental area, BDNF protein and mRNA expression levels were higher in the 5-HT1A and the 5-HT2A receptor agonist groups compared with the solvent control no-stress or psychological stress group in the CA1 and CA3 of the hippocampus, prefrontal cortex, central amygdaloid nucleus, dorsomedial hypothalamic nucleus, dentate gyrus, shell of the nucleus accumbens and the midbrain periaqueductal gray...
September 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27844095/antidepressant-effects-of-combination-of-brexpiprazole-and-fluoxetine-on-depression-like-behavior-and-dendritic-changes-in-mice-after-inflammation
#12
Min Ma, Qian Ren, Chun Yang, Ji-Chun Zhang, Wei Yao, Chao Dong, Yuta Ohgi, Takashi Futamura, Kenji Hashimoto
RATIONALE: Addition of low doses of atypical antipsychotic drugs with selective serotonin reuptake inhibitors (SSRIs) could promote a rapid antidepressant effect in treatment-resistant patients with major depression. Brexpiprazole, a new atypical antipsychotic drug, has been used as adjunctive therapy for the treatment of major depression. OBJECTIVES: The present study was undertaken to examine whether brexpiprazole could augment antidepressant effects of the SSRI fluoxetine in an inflammation model of depression...
February 2017: Psychopharmacology
https://www.readbyqxmd.com/read/27824354/serotonergic-modulation-of-waiting-impulsivity-is-mediated-by-the-impulsivity-phenotype-in-humans
#13
S Neufang, A Akhrif, C G Herrmann, C Drepper, G A Homola, J Nowak, J Waider, A G Schmitt, K-P Lesch, M Romanos
In rodents, the five-choice serial reaction time task (5-CSRTT) has been established as a reliable measure of waiting impulsivity being defined as the ability to regulate a response in anticipation of reinforcement. Key brain structures are the nucleus accumbens (NAcc) and prefrontal regions (for example, pre- and infralimbic cortex), which are, together with other transmitters, modulated by serotonin. In this functional magnetic resonance imaging study, we examined 103 healthy males while performing the 5-CSRTT measuring brain activation in humans by means of a paradigm that has been widely applied in rodents...
November 8, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27821848/depression-like-phenotype-by-deletion-of-%C3%AE-7-nicotinic-acetylcholine-receptor-role-of-bdnf-trkb-in-nucleus-accumbens
#14
Ji-Chun Zhang, Wei Yao, Qian Ren, Chun Yang, Chao Dong, Min Ma, Jin Wu, Kenji Hashimoto
The α7 subtype of nicotinic acetylcholine receptor (nAChR) plays a role in the inflammation which is implicated in depression. This study was undertaken to examine the role of α7 nAChR in depression using α7 nAChR knock-out (KO) mice. Serum levels of tumor necrosis factor-α and interlukin-1β in KO mice were higher than wild-type mice, suggesting an inflammatory process in KO mice. α7 nAChR KO mice showed depression-like phenotype. Furthermore, KO mice showed increased brain-derived neurotrophic factor (BDNF) and its receptor TrkB signaling, as well as increased synaptogenesis and spine density in the nucleus accumbens (NAc), although BDNF-TrkB signaling and synaptogenesis were not altered in the prefrontal cortex and hippocampus...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27755991/risperidone-and-escitalopram-co-administration-a-potential-treatment-of-schizophrenia-symptoms-with-less-side-effects
#15
Katarzyna Kamińska, Karolina Noworyta-Sokołowska, Alexandra Jurczak, Anna Górska, Zofia Rogóż, Krystyna Gołembiowska
BACKGROUND: Schizophrenia is a psychiatric disorder characterized by positive and negative symptoms often accompanied by depression and cognitive deficits. Positive symptoms, like delusions and hallucinations are caused by an excess of dopamine (DA) signaling and are treated with the second generation antipsychotic drugs. Negative symptoms of schizophrenia are represented by social withdrawal, apathy and blunted emotional response. It was demonstrated that co-administration of risperidone and selective serotonin reuptake inhibitors alleviated depressive symptoms and cognitive dysfunction in animal models of schizophrenia...
February 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/27702628/effects-of-repeated-high-dose-methamphetamine-and-ceftriaxone-post-treatments-on-tissue-content-of-dopamine-and-serotonin-as-well-as-glutamate-and-glutamine
#16
Yusuf S Althobaiti, Atiah H Almalki, Sujan C Das, Fahad S Alshehri, Youssef Sari
Repeated exposure to high doses of methamphetamine (METH) is known to alter several neurotransmitters in certain brain regions. Little is known about the effects of ceftriaxone (CEF), a β-lactam antibiotic, known to upregulate glutamate transporter subtype 1, post-treatment on METH-induced depletion of dopamine and serotonin (5-HT) tissue content in brain reward regions. Moreover, the effects of METH and CEF post-treatment on glutamate and glutamine tissue content are not well understood. In this study, Wistar rats were used to investigate the effects of METH and CEF post-treatment on tissue content of dopamine/5-HT and glutamate/glutamine in the nucleus accumbens (NAc) and prefrontal cortex (PFC)...
October 1, 2016: Neuroscience Letters
https://www.readbyqxmd.com/read/27646482/evidence-that-activation-of-nuclear-peroxisome-proliferator-activated-receptor-alpha-ppar%C3%AE-modulates-sleep-homeostasis-in-rats
#17
Eric Murillo-Rodríguez, Khalil Guzmán, Gloria Arankowsky-Sandoval, Mireille Salas-Crisóstomo, Ramsés Jiménez-Moreno, Oscar Arias-Carrión
The peroxisome proliferator-activated receptor alpha (PPARα) is a member of the nuclear receptor superfamily that has been suggested as a modulator of several physiological functions. The PPARα recognizes as an endogenous ligand the anorexic lipid mediator oleoylethanolamide (OEA) which displays wake-inducing properties. Despite that recent evidence indicates that activation of PPARα by synthetic agonists such as Wy14643 enhances waking as well as the extracellular contents of wake-related neurotransmitters, the role of PPARα in sleep recovery after prolonged waking has not been fully described...
September 16, 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/27569181/regional-specific-modulation-of-neuronal-activation-associated-with-nitric-oxide-synthase-inhibitors-in-an-animal-model-of-antidepressant-activity
#18
Eoin Sherwin, Valentina Gigliucci, Andrew Harkin
OBJECTIVE: The regional specific modulation of neuronal activation following drug administration is of interest to determine brain areas involved in the behavioural effects of experimental test compounds. In the current investigation the effects of the L-arginine related NOS inhibitor N(ω)-l-nitroarginine (L-NA) and the structurally unrelated selective neuronal NOS inhibitor 1-(2-Trifluoro-methyl-phenyl) imidazole (TRIM) were assessed in the rat for changes in regional c-FOS immunoreactivity, a marker of neuronal activation, upon exposure to the forced swimming test (FST)...
January 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/27566488/behavioral-pharmacological-and-neuroanatomical-analysis-of-serotonin-2c-receptor-agonism-on-maternal-behavior-in-rats
#19
Ruiyong Wu, Jun Gao, Shinnyi Chou, Collin Davis, Ming Li
As a highly motivated social behavior, maternal behavior in rats has been routinely used to study psychoactive drugs for clinical, neuroscience and pharmacological purposes. Recent evidence indicates that acute activation of serotonin 2C (5-HT2C) receptors causes a disruption of rat maternal behavior. The present study was designed to elucidate the behavioral, pharmacological mechanisms and neuroanatomical basis of this 5-HT2C effect. First, we replicated the finding that acute MK212 injection (2.0mg/kg, a highly selective 5-HT2C agonist) disrupts maternal behavior, especially on pup retrieval...
November 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/27566288/sex-differences-in-abuse-related-neurochemical-and-behavioral-effects-of-3-4-methylenedioxymethamphetamine-mdma-in-rats
#20
M F Lazenka, J A Suyama, C T Bauer, M L Banks, S S Negus
3,4-Methylenedioxymethamphetamine (MDMA) is a substrate for dopamine (DA), norepinephrine and serotonin (5HT) transporters that produces greater pharmacological effects on certain endpoints in females than males in both clinical and rodent preclinical studies. To evaluate potential for sex differences in abuse-related MDMA effects, the present study compared MDMA effects on intracranial self-stimulation (ICSS) and on in vivo microdialysis measurements of DA or 5HT in the nucleus accumbens (NAc) in female and male Sprague-Dawley rats...
January 2017: Pharmacology, Biochemistry, and Behavior
keyword
keyword
60183
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"