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https://www.readbyqxmd.com/read/28529734/differential-regulation-of-mouse-and-human-mu-opioid-receptor-gene-depends-on-the-single-stranded-dna-structure-of-its-promoter-and-%C3%AE-complex-protein-1
#1
Dong-Sun Lee, Ping-Yee Law, Wei Ln, Horace H Loh, Kyu Young Song, Hack Sun Choi
The Mu opioid receptor (MOR) mediates various functions of opioid-induced analgesia, euphoria and respiratory depression, and is a major target of opioid analgesics. Understanding of MOR gene expression among species is important for understanding its analgesic function in humans. In the current study, the polypyrimidine/polypurine (PPy/u) region, a key element of MOR gene expression, was compared in humans and mice. The mouse PPy/u element is highly homologous to its human element (84%), and the mouse MOR (mMOR) reporter drives luciferase activity 35-fold more effectively than the human MOR (hMOR) reporter...
May 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28503110/pediatric-mania-the-controversy-between-euphoria-and-irritability
#2
Giulia Serra, Mai Uchida, Claudia Battaglia, Maria Pia Casini, Lavinia De Chiara, Joseph Biederman, Stefano Vicari, Janet Wozniak
Pediatric Bipolar Disorder (BD) is a highly morbid pediatric psychiatric disease, consistently associated with family psychiatric history of mood disorders and associated with high levels of morbidity and disability and with a great risk of suicide. While there is a general consensus on the symptomatology of depression in childhood, the phenomenology of pediatric mania is still highly debated and the course and long-term outcome of pediatric BD still need to be clarified. We reviewed the available studies on the phenomenology of pediatric mania with the aim of summarizing the prevalence, demographics, clinical correlates and course of these two types of pediatric mania...
April 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28494108/selective-%C3%AE%C2%BA-opioid-receptor-partial-agonist-hs666-produces-potent-antinociception-without-inducing-aversion-after-i-c-v-administration-in-mice
#3
Mariana Spetea, Shainnel O Eans, Michelle L Ganno, Aquilino Lantero, Michael Mairegger, Lawrence Toll, Helmut Schmidhammer, Jay P McLaughlin
BACKGROUND AND PURPOSE: The κ opioid (KOP) receptor has a central role in modulating neurotransmission in central and peripheral neuronal circuits that subserve pain and other behavioural responses. Although KOP agonists do not produce euphoria or lead to respiratory suppression, they induce dysphoria and sedation. We hypothesized that brain-penetrant KOP receptor ligands possessing biased agonism towards G protein signalling over β-arrestin2 recruitment would produce robust antinociception with fewer liabilities of use...
May 11, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28484399/biochemical-benefits-diagnosis-and-clinical-risks-evaluation-of-kratom
#4
REVIEW
Dimy Fluyau, Neelambika Revadigar
BACKGROUND: Kratom (Mitragyna speciosa) is a tropical tree with a long history of traditional use in parts of Africa and Southeast Asia. Kratom is also known as Thom, Thang, and Biak. Its leaves and the teas brewed from them have long been used by people in that region to manage pain and opioid withdrawal and to stave off fatigue. Kratom is actually consumed throughout the world for its stimulant effects and as an opioid substitute (in form of tea, chewed, smoked, or ingested in capsules)...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28479395/effects-of-acute-alcohol-on-excitability-in-the-cns
#5
REVIEW
Neil L Harrison, Mary Jane Skelly, Emma P Grosserode, Daniel C Lowes, Tamara Zeric, Sara Phister, Michael C Salling
Alcohol has many effects on brain function and hence on human behavior, ranging from anxiolytic and mild disinhibitory effects, sedation and motor incoordination, amnesia, emesis, hypnosis and eventually unconsciousness. In recent years a variety of studies have shown that acute and chronic exposure to alcohol can modulate ion channels that regulate excitability. Modulation of intrinsic excitability provides another way in which alcohol can influence neuronal network activity, in addition to its actions on synaptic inputs...
May 4, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28464765/functional-chemical-groups-that-may-likely-become-source-for-synthesis-of-novel-central-nervous-system-cns-acting-drugs
#6
Saganuwan Alhaji Saganuwan
Central nervous system (CNS) disorders are on increase perhaps due to genetic, enviromental, social and dietetic factors. Unfortunately, a large number of CNS drugs have adverse effects such as addiction, tolerance, psychological and physical dependence. In view of this, literature search was carried out with a view to identifying functional chemical groups that may serve as lead molecule for synthesis of compounds that may have CNS activity. The search revealed that heterocycles that have heteroatoms such as nitrogen (N), sulphur (S) and oxygen (O) form the largest class of organic compounds...
May 2, 2017: Central Nervous System Agents in Medicinal Chemistry
https://www.readbyqxmd.com/read/28456147/tyrosine-hydroxylase-gene-expression-is-facilitated-by-alcohol-followed-by-the-degradation-of-the-protein-by-ubiquitin-proteasome-system
#7
Ichiro Kawahata, Gutierrez Rico Evelyn, Xu Huinan, Shiori Ohtaku, Yoshihisa Tomioka, Tohru Yamakuni
OBJECTIVES: Alcohol intake induces brief periods of euphoria; however, its continuous consumption can lead the development of alcohol tolerance. The euphoria, an intense feeling of wellbeing, is deeply associated with dopamine. Dopamine biosynthesis is strictly regulated by tyrosine hydroxylase (TH), a rate-limiting enzyme of dopamine. The aim of this study was to examine the transient or chronic effects of ethanol treatment on TH protein level in vitro. METHODS: Cultured primary mesencephalic neurons were prepared and exposed to 100 mM ethanol for 48 hours or 168 hours...
February 15, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28412921/synthetic-cannabinoids-psychopharmacology-clinical-aspects-and-psy-chotic-onset
#8
Giovanni Martinotti, Rita Santacroce, Duccio Papanti, Yasmine Elgharably, Mariya Prilutskaya, Ornella Corazza
Synthetic Cannabinoids (SC) are the widest and most diffused class of Novel Psychoactive Substances. SC are chemically heterogeneous and structurally dissimilar from delta-9-tetrahydrocannabinol, being full agonists of the endocannabinoid system receptors CB1 and CB2. Desired effects include euphoria, talkativeness, feelings of joy and laughter, relaxation. With respect to cannabis, SC intake may also be associated with quicker arise of the effects, shorter duration of action, and larger levels of hangover...
April 13, 2017: CNS & Neurological Disorders Drug Targets
https://www.readbyqxmd.com/read/28412827/challenges-of-tobacco-control-program-in-iran
#9
Jalal Poorolajal, Younes Mohammadi, Azam Mahmoodi
BACKGROUND: This study assessed the status of cigarette marketing in Iran as well as the attitude of smokers toward smoking and the policies and tobacco control programs in the country. METHODS: This cross-sectional study was conducted on 3480 volunteer smokers in six provinces, using a stratified cluster random sampling method. The study population consisted of smokers who used at least one cigarette per day. The data collection tool was an anonymous self-administered questionnaire including basic information and 20 five-choice questions related to participants' attitude toward smoking habits (Cronbach's alpha; 79...
April 2017: Archives of Iranian Medicine
https://www.readbyqxmd.com/read/28405070/nitrous-oxide-induced-vitamin-b12-deficiency
#10
Lindsey Stockton, Cameron Simonsen, Susan Seago
Nitrous oxide is a gas that is odorless, colorless, and has a sweet taste at room temperature. Nitrous oxide has several uses, including in surgery and dentistry (referred to as "laughing gas"), in automotive racing, and in aerosol spray propellants. The aerosol spray propellants that typically use nitrous oxide are whipped cream canisters and cooking sprays. Unfortunately, these over-the-counter household items are a source of nitrous oxide that can be used for recreational use. The most popular is the use of industrial-grade canisters having the slang term "whippets...
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28380057/specific-behavioral-and-cellular-adaptations-induced-by-chronic-morphine-are-reduced-by-dietary-omega-3-polyunsaturated-fatty-acids
#11
Joshua Hakimian, Ani Minasyan, Lily Zhe-Ying, Mariana Loureiro, Austin Beltrand, Camille Johnston, Alexander Vorperian, Nicole Romaneschi, Waleed Atallah, Fernando Gomez-Pinilla, Wendy Walwyn
Opiates, one of the oldest known drugs, are the benchmark for treating pain. Regular opioid exposure also induces euphoria making these compounds addictive and often misused, as shown by the current epidemic of opioid abuse and overdose mortalities. In addition to the effect of opioids on their cognate receptors and signaling cascades, these compounds also induce multiple adaptations at cellular and behavioral levels. As omega-3 polyunsaturated fatty acids (n-3 PUFAs) play a ubiquitous role in behavioral and cellular processes, we proposed that supplemental n-3 PUFAs, enriched in docosahexanoic acid (DHA), could offset these adaptations following chronic opioid exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28375418/unexpected-serious-cardiac-arrhythmias-in-the-setting-of-loperamide-abuse
#12
Somwail Rasla, Amy St Amand, Marina K Garas, Amr El Meligy, Taro Minami
Loperamide (Imodium) is a non-prescription opioid receptor agonist available over-the-counter for the treatment of diarrhea. When ingested in excessive doses, loperamide can penetrate the blood-brain barrier and is reported to produce euphoria, central nervous system and respiratory depression, and cardiotoxicity. There is an emerging trend in its use among drug abusers for its euphoric effects or for self-treatment of opioid withdrawal. We report a case of ventricular dysrhythmias associated with loperamide abuse in a 28-year-old man who substituted loperamide for the opioids that he used to abuse...
April 3, 2017: Rhode Island Medical Journal
https://www.readbyqxmd.com/read/28370353/thriving-in-relation-to-cognitive-impairment-and-neuropsychiatric-symptoms-in-swedish-nursing-home-residents
#13
Sabine Björk, Hugo Lövheim, Marie Lindkvist, Anders Wimo, David Edvardsson
OBJECTIVES: The purpose of this study was to explore relations among thriving, cognitive function, and neuropsychiatric symptoms (NPS) in nursing home residents. METHODS: A national, cross-sectional, randomized study of Swedish nursing home residents (N = 4831) was conducted between November 2013 and September 2014. Activities of daily life functioning, cognitive functioning, NPS, and thriving were assessed with the Katz activities of daily living, Gottfries' Cognitive Scale, Nursing Home version of the Neuropsychiatric Inventory, and Thriving of Older People Scale, respectively...
April 3, 2017: International Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28349724/loperamide-metabolite-induced-cardiomyopathy-and-qtc-prolongation
#14
Zabeer Bhatti, Jessica Norsworthy, Tamas Szombathy
Loperamide is an over-the-counter, peripherally acting, μ-opioid receptor agonist used for the treatment of diarrhea. In recent times users have found that at higher doses, loperamide crosses the blood-brain barrier and reaches central μ-receptors in the brain, leading to central opiate effects including euphoria and respiratory depression. We report a case of a 37-year-old female who attempted suicide with over 200 loperamide tablets. During her overdose, her QTc was significantly prolonged at >600 ms...
March 28, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28303900/associations-between-behavioral-and-neural-correlates-of-inhibitory-control-and-amphetamine-reward-sensitivity
#15
Jessica Weafer, Stephanie M Gorka, Donald Hedeker, Mario Dzemidzic, David A Kareken, K Luan Phan, Harriet de Wit
Poor inhibitory control and sensitivity to drug reward are two significant risk factors for drug abuse. Although the two have been largely viewed as separate and independent risk factors, there is new evidence to suggest that they may be related at both the behavioral and neural level. This study examined associations between behavioral and neural correlates of inhibitory control and sensitivity to the subjective rewarding effects of amphetamine in humans. Healthy volunteers (n=63) first completed the stop signal task, a behavioral measure of inhibitory control...
March 17, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28283378/the-effects-of-synthetic-cannabinoid-ur-144-on-the-human-body-a-review-of-39-cases
#16
Piotr Adamowicz, Joanna Gieroń, Dominika Gil, Wojciech Lechowicz, Agnieszka Skulska, Bogdan Tokarczyk
UR-144 [(1-pentyl-1H-indol-3-yl)(2,2,3,3-tetramethylcyclopropyl)methanone] is a synthetic cannabinoid, which has been detected in many 'legal highs', seized from the global drug market since the beginning of 2012. It has gained popularity as a 'legal' alternative to classic cannabis in countries where it was not controlled. Despite the widespread distribution of this substance, the data on its effects on the human body are scarce. Therefore, this paper describes the results of analysis and observed effects in 39 cases in which UR-144 was determined in blood...
March 7, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28277706/user-identified-positive-outcome-expectancies-of-electronic-cigarette-use-a-concept-mapping-study
#17
Eric K Soule, Sarah F Maloney, Mignonne C Guy, Thomas Eissenberg, Pebbles Fagan
Electronic cigarette (ECIG) use is growing in popularity, but little is known about the perceived positive outcomes of ECIG use. This study used concept mapping (CM) to examine positive ECIG outcome expectancies. Sixty-three past 30-day ECIG users (38.1% female) between the ages of 18 and 64 (M = 37.8, SD = 13.3) completed a CM module. In an online program, participants provided statements that completed a prompt: "A specific positive, enjoyable, or exciting effect (i.e., physical or psychological) that I have experienced WHILE USING or IMMEDIATELY AFTER USING an electronic cigarette/electronic vaping device is...
May 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
https://www.readbyqxmd.com/read/28239898/early-signal-of-diverted-use-of-tropicamide-eye-drops-in-france
#18
Camille Ponté, Christian Pi, Aurore Palmaro, Emilie Jouanjus, Maryse Lapeyre-Mestre
BACKGROUND: Tropicamide is a mydriatic drug used as eye-drops for diagnostic or therapeutic purposes. From 2013, a diverted use by intravenous route has been suspected in Eastern Europe in opioids users. To recent date, no signal of a misuse has been identified in France. PURPOSE: To investigate an early signal of a diverted use of tropicamide eye drops and to collect information regarding motives of misusing and tropicamide-induced effects. METHODS: Information was obtained at 1/ regional level (Midi-Pyrénées area): reimbursement data and pharmacists' reports on suspicious requests, 2/ national level: reimbursement data and prescriptions suggesting possible abuse from the OSIAP (Ordonnances Suspectes, Indicateur d'Abus Possible) survey and 3/ international level: VigiBase® reports and Web sources...
February 27, 2017: British Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28215899/-18-f-fluorodeoxyglucose-positron-emission-tomography-cortical-metabolic-activity-associated-with-distinct-agitation-behaviors-in-alzheimer-disease
#19
Gali H Weissberger, Rebecca J Melrose, Theresa A Narvaez, Dylan Harwood, Mark A Mandelkern, David L Sultzer
OBJECTIVE: This study aimed to investigate the neurobiologic correlates of two distinct clusters of agitation symptoms to identify the unique biologic substrates underlying agitated behaviors. METHODS: Eighty-eight outpatients with mild to moderate Alzheimer disease (AD) were recruited from the VA Greater Los Angeles Healthcare System Geropsychiatry Outpatient Program. A cross-sectional investigation was conducted of the relationship between cerebral glucose metabolism measured via (18)F-fluorodeoxyglucose positron emission tomography and agitated symptoms from the Neuropsychiatric Inventory (NPI) in patients with AD...
January 31, 2017: American Journal of Geriatric Psychiatry
https://www.readbyqxmd.com/read/28215172/the-phosphodiesterase-5-inhibitors-pde-5i-for-erectile-dysfunction-ed-a-therapeutic-challenge-for-psychiatrists
#20
Chong Siew Koon, Hatta Sidi, Jaya Kumar, Srijit Das, Ong Wan Xi, Muhammad Hizri Hatta, Cesar Alfonso
Erectile function (EF) is a prerequisite for satisfactory sexual intercourse (SI) and central to male sexual functioning. Satisfactory SI eventually leads to orgasm - a biopsychophysiological state of euphoria - leading to a sense of bliss, enjoyment and positive mental well being. For a psychiatrist, treating ED is self-propelled to harmonize these pleasurable experiences alongside with encouragement of physical wellness and sensuality. Hence, the role of PDE-5i is pivotal in the context of treating ED constitutes a therapeutic challenge...
February 15, 2017: Current Drug Targets
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