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International Journal of Neuropsychopharmacology

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https://www.readbyqxmd.com/read/28034961/role-of-prefrontal-serotonergic-and-dopaminergic-systems-in-encounter-induced-hyperactivity-in-methamphetamine-sensitized-mice
#1
Tatsunori Tanaka, Yukio Ago, Chiaki Umehara, Emina Imoto, Shigeru Hasebe, Hitoshi Hashimoto, Kazuhiro Takuma, Toshio Matsuda
BACKGROUND: Isolation-reared mice show social encounter-induced hyperactivity with activation of prefrontal serotonergic and dopaminergic systems, but it is not known whether this stress response is observed in other pathological conditions. Here we examined whether the social encounter stimulation induces abnormal behavior during withdrawal in chronic methamphetamine (METH)-treated mice. METHODS: To induce METH-induced behavioral sensitization, male mice were injected with METH (1 mg/kg) once daily for 7 days...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28034960/elevated-dna-oxidation-and-dna-repair-enzyme-expression-in-brain-white-matter-in-major-depressive-disorder
#2
Attila Szebeni, Katalin Szebeni, Timothy P DiPeri, Luke A Johnson, Craig A Stockmeier, Jessica D Crawford, Michelle J Chandley, Liza J Hernandez, Katherine C Burgess, Russell W Brown, Gregory A Ordway
BACKGROUND: Pathology of white matter in brains of patients with major depressive disorder (MDD) is well-documented, but the cellular and molecular basis of this pathology are poorly understood. METHODS: Levels of DNA oxidation and gene expression of DNA damage repair enzymes were measured in Brodmann area 10 (BA10) and/or amygdala (uncinate fasciculus) white matter tissue from brains of MDD (n=10) and psychiatrically normal control donors (n=13). DNA oxidation was also measured in BA10 white matter of schizophrenia donors (n=10) and in prefrontal cortical white matter from control rats (n=8) and rats with repeated stress-induced anhedonia (n=8)...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27927740/chronic-vortioxetine-treatment-reduces-exaggerated-expression-of-conditioned-fear-memory-and-restores-active-coping-behavior-in-chronically-stressed-rats
#3
Lauren Hatherall, Connie Sánchez, David A Morilak
BACKGROUND: Stress is a risk factor for depression and anxiety disorders, disrupting neuronal processes leading to exaggerated fear and compromised coping behaviors. Current antidepressants are only partially effective. Vortioxetine, a novel multimodal antidepressant, is a serotonin transporter inhibitor; 5-HT3, 5-HT7, and 5-HT1D receptor antagonist; 5-HT1B partial agonist; and 5-HT1A agonist. We have shown that chronic dietary vortioxetine administration reversed stress-induced deficits in cognitive flexibility...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27927738/altered-acoustic-startle-reflex-prepulse-inhibition-and-peripheral-brain-derived-neurotrophic-factor-in-morphine-self-administered-rats
#4
Bong Hyo Lee, Thomas Y Park, Erica Lin, He Li, Chae Ha Yang, Kwang H Choi
BACKGROUND: Previous studies suggested that opiate withdrawal may increase anxiety and disrupt brain-derived neurotrophic factor function, but the effects of i.v. morphine self-administration on these measures remain unclear. METHODS: Adult male Sprague-Dawley rats were implanted with a catheter in the jugular vein. After 1 week of recovery, the animals were allowed to self-administer either i.v. morphine (0.5 mg/kg per infusion, 4 h/d) or saline in the operant conditioning chambers...
December 29, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28031269/indications-of-success-strategies-for-utilizing-neuroimaging-biomarkers-in-cns-drug-discovery-and-development-cinp-jsnp-working-group-report
#5
REVIEW
Tetsuya Suhara, Shigeyuki Chaki, Haruhide Kimura, Makoto Furusawa, Mitsuyuki Matsumoto, Hiroo Ogura, Takaaki Negishi, Takeaki Saijo, Makoto Higuchi, Tomohiro Omura, Rira Watanabe, Sosuke Miyoshi, Noriaki Nakatani, Noboru Yamamoto, Shyh-Yuh Liou, Yuhei Takado, Jun Maeda, Yasumasa Okamoto, Yoshiaki Okubo, Makiko Yamada, Hiroshi Ito, Noah M Walton, Shigeto Yamawaki
Despite large unmet medical needs in the field for several decades, central nervous system (CNS) drug discovery and development has been largely unsuccessful. Biomarkers, particularly those utilizing neuroimaging, have played important roles in aiding CNS drug development, including dosing determination of investigational new drugs (INDs). The utility of biomarkers as tools to overcome issues of CNS drug development is the subject for this review.In this review aimed at employing biomarkers as tools to overcome issues surrounding CNS drug development, we first analyzed problems in utilizing biomarkers in processes of drug discovery and development for CNS disorders...
December 28, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28031268/distinct-roles-of-opioid-and-dopamine-systems-in-lateral-hypothalamic-intracranial-self-stimulation
#6
Soichiro Ide, Takehiro Takahashi, Yukio Takamatsu, George R Uhl, Hiroaki Niki, Ichiro Sora, Kazutaka Ikeda
BACKGROUND: Opioid and dopamine systems play crucial roles in reward. Similarities and differences in the neural mechanisms of reward that are mediated by these two systems have remained largely unknown. Thus, in the present study, we investigated the differences in reward function in both µ-opioid receptor knockout (MOP KO) mice and dopamine transporter knockout (DAT KO) mice, important molecules in the opioid and dopamine systems. METHODS: Mice were implanted with electrodes into the right lateral hypothalamus (lh)...
December 28, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27816941/the-international-college-of-neuro-psychopharmacology-cinp-treatment-guidelines-for-bipolar-disorder-in-adults-cinp-bd-2017-part-2-review-grading-of-the-evidence-and-a-precise-algorithm
#7
REVIEW
Konstantinos N Fountoulakis, Lakshmi Yatham, Heinz Grunze, Eduard Vieta, Allan Young, Pierre Blier, Siegfried Kasper, Hans Jurgen Moeller
BACKGROUND: The current paper includes a systematic search of the literature, a detailed presentation of the results, and a grading of treatment options in terms of efficacy and tolerability/safety. MATERIAL AND METHODS: The PRISMA method was used in the literature search with the combination of the words 'bipolar,' 'manic,' 'mania,' 'manic depression,' and 'manic depressive' with 'randomized,' and 'algorithms' with 'mania,' 'manic,' 'bipolar,' 'manic-depressive,' or 'manic depression...
December 22, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28003313/suicidal-risks-in-reports-of-long-term-controlled-trials-of-antidepressants-for-major-depressive-disorder-ii
#8
LETTER
Ross J Baldessarini, Wai K Lau, Jordan Sim, Min Y Sum, Kang Sim
No abstract text is available yet for this article.
December 20, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27655729/suicidal-risks-in-report-of-reports-of-long-term-treatment-trials-for-major-depressive-disorder
#9
LETTER
R Dardennes, N Al Anbar, S Divac, J Cohen
No abstract text is available yet for this article.
December 20, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27994006/attenuation-of-cocaine-induced-conditioned-place-preference-and-motor-activity-via-cannabinoid-cb2-receptor-agonism-and-cb1-receptor-antagonism-in-rats
#10
Foteini Delis, Alexia Polissidis, Nafsika Poulia, Zuzana Justinova, George G Nomikos, Steven R Goldberg, Katerina Antoniou
BACKGROUND: Studies have shown the involvement of cannabinoid (CB) receptors in the behavioral and neurobiological effects of psychostimulants. Most of these studies have focused on the role of CB1 receptors in the psychostimulant effects of cocaine, while very few have investigated the respective role of CB2 receptors. Further studies are warranted to elucidate the extent of CB receptor involvement in the expression of cocaine-induced effects. METHODS: The role of CB1 and CB2 receptors in the rewarding and motor properties of cocaine was assessed in conditioned place preference, conditioned motor activity, and open field activity in rats...
December 19, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27988490/hydrogen-sulfide-ameliorates-homocysteine-induced-cognitive-dysfunction-by-inhibition-of-reactive-aldehydes-involving-upregulation-of-aldh2
#11
Min Li, Ping Zhang, Hai-Jun Wei, Man-Hong Li, Wei Zou, Xiang Li, Hong-Feng Gu, Xiao-Qing Tang
BACKGROUND: Homocysteine, a risk factor for Alzheimer's disease, induces cognitive dysfunction. Reactive aldehydes play an important role in cognitive dysfunction. Aldehyde-dehydrogenase 2 detoxifies reactive aldehydes. Hydrogen sulfide, a novel neuromodulator, has neuroprotective effects and regulates learning and memory. Our previous work confirmed that the disturbance of hydrogen sulfide synthesis is invovled in homocysteine-induced defects in learning and memory. Therefore, the present work was to explore whether hydrogen sulfide ameliorates homocysteine-generated cognitive dysfunction and to investigate whether its underlying mechanism is related to attenuating accumulation of reactive aldehydes by upregulation of aldehyde-dehydrogenase 2...
December 19, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27806991/hippocampal-perineuronal-nets-are-required-for-the-sustained-antidepressant-effect-of-ketamine
#12
Jennifer J Donegan, Daniel J Lodge
BACKGROUND: N-methyl-D-aspartate receptor antagonists, like ketamine, produce a rapid-acting and long-lasting antidepressant effect. Although the mechanism is not completely understood, ketamine is thought to preferentially target N-methyl-D-aspartate receptors on fast-spiking parvalbumin-containing interneurons. The function of parvalbumin-containing interneurons is dependent on perineuronal nets, a specialized form of extracellular matrix that surrounds these cells. METHODS: Chondroitinase was used to enzymatically degrade perineuronal nets surrounding parvalbumin-containing interneurons in the ventral hippocampus, a region that is involved in the antidepressant response to ketamine...
December 19, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27941079/the-international-college-of-neuro-psychopharmacology-cinp-treatment-guidelines-for-bipolar-disorder-in-adults-cinp-bd-2017-part-3-the-clinical-guidelines
#13
REVIEW
Konstantinos N Fountoulakis, Heinz Grunze, Eduard Vieta, Allan Young, Lakshmi Yatham, Pierre Blier, Siegfried Kasper, Hans Jurgen Moeller
BACKGROUND: The current paper introduces the actual CINP clinical guidelines for the treatment of Bipolar disorder (BD). CONCEPT AND STRUCTURE OF THE GUIDELINES: The current clinical guidelines are based on evidence based data, but they also intend to be clinically useful, while a rigid algorithm was developed on the basis of firm evidence alone. Monotherapy was prioritised over combination therapy. There are separate recommendations for each of the major phases of BD expressed as a five-step algorithm...
December 10, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27932499/genetic-variation-in-one-carbon-metabolism-and-changes-in-metabolic-parameters-in-first-episode-schizophrenia-patients
#14
Błażej Misiak, Łukasz Łaczmański, Natalia Kinga Słoka, Elżbieta Szmida, Ryszard Ślęzak, Patryk Piotrowski, Andrzej Kiejna, Dorota Frydecka
BACKGROUND: In this study, we aimed to investigate the effects of polymorphisms in genes encoding 1-carbon metabolism enzymes on differential development of metabolic parameters during 12 weeks of treatment with second-generation antipsychotics in first-episode schizophrenia patients. METHODS: The following polymorphisms in 1-carbon metabolism genes were genotyped: MTHFR (C677T and A1298C), MTHFD1 (G1958A), MTRR (A66G), and BHMT (G742A). A broad panel of metabolic parameters including body mass index, waist circumference, total cholesterol low and high density lipoproteins, triglycerides, homocysteine, folate, and vitamin B12 was determined...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27927736/multidimensional-assessment-of-functional-outcomes-in-schizophrenia-results-from-qualify-a-head-to-head-trial-of-aripiprazole-once-monthly-and-paliperidone-palmitate
#15
Steven G Potkin, Jean-Yves Loze, Carlos Forray, Ross A Baker, Christophe Sapin, Timothy Peters-Strickland, Maud Beillat, Anna-Greta Nylander, Peter Hertel, Simon Nitschky Schmidt, Anna Eramo, Karina Hansen, Dieter Naber
BACKGROUND: QUALIFY was a 28-week, randomized, open-label, head-to-head trial that assessed improvements across multiple measures in stable patients with schizophrenia with aripiprazole once-monthly 400 mg vs paliperidone palmitate. METHODS: Secondary effectiveness assessments included physician-rated readiness for work using the Work Readiness Questionnaire, the Clinical Global Impression-Severity and Clinical Global Impression-Improvement scales, and quality of life with the rater-blinded Heinrichs-Carpenter Quality of Life Scale...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27816940/does-methylphenidate-reduce-testosterone-levels-in-humans-a-prospective-study-in-children-with-attention-deficit-hyperactivity-disorder
#16
Liang-Jen Wang, Miao-Chun Chou, Wen-Jiun Chou, Min-Jing Lee, Pao-Yen Lin, Sheng-Yu Lee, Yi-Hsuan Lee
BACKGROUND: Animal studies and case reports have suggested that methylphenidate exerts adverse effects on gonadal hormones. This study aimed to determine whether methylphenidate alters testosterone levels in children with attention-deficit/hyperactivity disorder through comparison of those with or without methylphenidate treatment. METHODS: This 4-week, nonrandomized, prospective study conducted in Taiwan included 203 attention-deficit/hyperactivity disorder patients with a mean age of 8...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27815417/dopamine-d1-and-d3-receptors-modulate-heroin-induced-cognitive-impairment-through-opponent-actions-in-mice
#17
Yongsheng Zhu, Yunpeng Wang, Jianghua Lai, Shuguang Wei, Hongbo Zhang, Peng Yan, Yunxiao Li, Xiaomeng Qiao, Fangyuan Yin
BACKGROUND: Chronic abuse of heroin leads to long-lasting and complicated cognitive impairment. Dopamine receptors are critically involved in the impulsive drug-driven behavior and the altered attention, processing speed, and mental flexibility that are associated with higher relapse rates. However, the effects of the different dopamine receptors and their possible involvement in heroin-induced cognitive impairment remain unclear. METHODS: The 5-choice serial reaction time task was used to investigate the profiles of heroin-induced cognitive impairment in mice...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27815416/s-ketamine-rapidly-reverses-synaptic-and-vascular-deficits-of-hippocampus-in-genetic-animal-model-of-depression
#18
Maryam Ardalan, Gregers Wegener, Ali H Rafati, Jens R Nyengaard
BACKGROUND: The neurovascular plasticity of hippocampus is an important theory underlying major depression. Ketamine as a novel glutamatergic antidepressant drug can induce a rapid antidepressant effect within hours. In a mechanistic proof of this concept, we examined whether ketamine leads to an increase in synaptogenesis and vascularization within 24 hours after a single injection in a genetic rat model of depression. METHODS: Flinders Sensitive Line and Flinders Resistant Line rats were given a single intraperitoneal injection of ketamine (15 mg/kg) or saline...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27815415/reduction-of-cocaine-induced-locomotor-effects-by-enriched-environment-is-associated-with-cell-specific-accumulation-of-%C3%AE-fosb-in-striatal-and-cortical-subregions
#19
Audrey Lafragette, Michael T Bardo, Virginie Lardeux, Marcello Solinas, Nathalie Thiriet
BACKGROUND: Early exposure to enriched environments has been shown to decrease the locomotor effects induced by repeated injections of cocaine and modify basal and cocaine-induced total protein levels of the transcription factor ΔFosB in the whole striatum of mice. In this study, we aimed at characterizing whether the profile of ΔFosB accumulation induced by enriched environments and cocaine would be similar or different in terms of brain areas and cell type. METHODS: We used mice expressing the eGFP protein in D1 receptor positive (D1R(+)) neurons to determine whether Δ FosB induced by enriched environment or cocaine injections (5×15 mg/kg) would occur in selective subpopulations of neurons in several subregions of the striatum and prefrontal cortex...
December 8, 2016: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27927739/the-roles-of-dopamine-d1-receptor-on-the-social-hierarchy-of-rodents-and-non-human-primates
#20
Yoshie Yamaguchi, Young-A Lee, Akemi Kato, Yukiori Goto
BACKGROUND: Although dopamine (DA) has been suggested to play a role in mediating social behaviors of individual animals, it is not clear whether such DA signaling contributes to attributes of social groups such as social hierarchy. METHODS: In this study, the effects of the pharmacological manipulation of DA D1 receptor function on the social hierarchy and behavior of group-housed mice and macaques were investigated using a battery of behavioral tests. RESULTS: D1 receptor blockade facilitated social dominance in mice at the middle, but not high or low, social rank in the groups without altering social preference among mates...
December 7, 2016: International Journal of Neuropsychopharmacology
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