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https://www.readbyqxmd.com/read/29878319/opioids-the-painful-public-health-reality
#1
EDITORIAL
Rachel F Tyndale, Edward M Sellers
The analgesic, sedative, antidepressant, euphoriant, intoxicating, and addictive properties of opium and its synthetic derivatives are well known and have been known for centuries. Hence, the current major public health problems due to excessive availability should be no surprise. What is unprecedented in the United States, and emerging elsewhere, is the extent of the profound consequences and complexity of addressing this public health crisis.
June 2018: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29873165/how-many-of-1829-antidepressant-users-report-withdrawal-effects-or-addiction
#2
John Read, Claire Cartwright, Kerry Gibson
More than 10% of adults are prescribed antidepressants annually in some countries. Recent increases in prescribing can be explained more by repeat prescriptions than new patients. This raises the question of whether antidepressants are addictive. A total of 1829 New Zealanders who had been prescribed antidepressants completed an online survey; 44% had been taking antidepressants for more than 3 years and were still taking them. Withdrawal effects when stopping medication were reported by 55%, and addiction by 27%...
June 5, 2018: International Journal of Mental Health Nursing
https://www.readbyqxmd.com/read/29866014/adverse-effects-of-antidepressants-reported-by-1-431-people-from-38-countries-emotional-blunting-suicidality-and-withdrawal-effects
#3
John Read, James Williams
BACKGROUND: Studies of the adverse effects of antidepressants tend to focus on biological symptoms. The prevalence of suicidality and withdrawal effects are currently a source of controversy. OBJECTIVE: To directly ascertain the experiences of an international sample of antidepressant users. METHOD: An online survey asked adult antidepressant users whether they had experienced 20 adverse effects 'as a result of taking the antidepressant', and if so, to what degree of severity...
June 4, 2018: Current Drug Safety
https://www.readbyqxmd.com/read/29862856/toxicological-assessment-of-venlafaxine-acute-and-subchronic-toxicity-study-in-rats
#4
Melad G Paulis, Essam M Hafez, Nashwa F El-Tahawy, Mohmed K M Aly
Antidepressants are the most commonly prescribed drugs for psychiatric treatment, and venlafaxine (VEN) is one of the most popular options. Venlafaxine is a nontricyclic dual-acting serotonin-norepinephrine reuptake inhibitor. Although an increased incidence of acute toxicity and addiction has been reported, controlled studies examining its toxic effects on different organs are still lacking. This study investigated the possible toxic effects of VEN on the liver, kidney, and gastric tissues. Three groups of rats were administered saline, a single LD50 dose (350 mg/kg), or 100 mg/kg VEN daily, followed by increases in the dose of 50 mg/kg every 10 days for 30 days (about 10 times the therapeutic doses)...
January 1, 2018: International Journal of Toxicology
https://www.readbyqxmd.com/read/29767995/structure-activity-relationships-and-therapeutic-potentials-of-5-ht7-receptor-ligands-an-update
#5
Maria N Modica, Enza Lacivita, Sebastiano Intagliata, Loredana Salerno, Giuseppe Romeo, Valeria Pittala, Marcello Leopoldo
Serotonin 5-HT7 receptor (5-HT7R) has been the subject of intense research efforts because of its presence in brain areas such as hippocampus, hypothalamus, and cortex. Preclinical data link the 5-HT7R to a variety of central nervous system processes such as regulation of circadian rhythms, mood, cognitions, pain processing, and mechanisms of addiction. 5-HT7R blockade has antidepressant effects and may ameliorate cognitive deficits associated with schizophrenia. 5-HT7R has been recently shown to modulate neuronal morphology, excitability, and plasticity, thus contributing to shape brain networks during development and to remodel neuronal wiring in the mature brain...
May 16, 2018: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29726344/effectiveness-of-theta-burst-versus-high-frequency-repetitive-transcranial-magnetic-stimulation-in-patients-with-depression-three-d-a-randomised-non-inferiority-trial
#6
Daniel M Blumberger, Fidel Vila-Rodriguez, Kevin E Thorpe, Kfir Feffer, Yoshihiro Noda, Peter Giacobbe, Yuliya Knyahnytska, Sidney H Kennedy, Raymond W Lam, Zafiris J Daskalakis, Jonathan Downar
BACKGROUND: Treatment-resistant major depressive disorder is common; repetitive transcranial magnetic stimulation (rTMS) by use of high-frequency (10 Hz) left-side dorsolateral prefrontal cortex stimulation is an evidence-based treatment for this disorder. Intermittent theta burst stimulation (iTBS) is a newer form of rTMS that can be delivered in 3 min, versus 37·5 min for a standard 10 Hz treatment session. We aimed to establish the clinical effectiveness, safety, and tolerability of iTBS compared with standard 10 Hz rTMS in adults with treatment-resistant depression...
April 28, 2018: Lancet
https://www.readbyqxmd.com/read/29690558/abuse-of-prescription-drugs-in-the-context-of-novel-psychoactive-substances-nps-a-systematic-review
#7
REVIEW
Fabrizio Schifano, Stefania Chiappini, John M Corkery, Amira Guirguis
Recently, a range of prescription and over-the-counter drugs have been reportedly used as Novel Psychoactive Substances (NPS), due to their potential for abuse resulting from their high dosage/idiosyncratic methods of self-administration. This paper provides a systematic review of the topic, focusing on a range of medications which have emerged as being used recreationally, either on their own or in combination with NPS. Among gabapentinoids, pregabalin may present with higher addictive liability levels than gabapentin, with pregabalin being mostly identified in the context of opioid, polydrug intake...
April 22, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29678770/self-reported-pain-in-patients-with-schizophrenia-results-from-the-national-first-step-face-sz-cohort
#8
Guillaume Fond, Laurent Boyer, Meja Andrianarisoa, Ophelia Godin, Ewa Bulzacka, Fabrice Berna, Lore Brunel, Nathalie Coulon, Bruno Aouizerate, Delphine Capdevielle, Isabelle Chereau, Thierry D'amato, Hélène Denizot, Caroline Dubertret, Julien Dubreucq, Catherine Faget, Sylvain Leignier, Jasmina Mallet, David Misdrahi, Romain Rey, Christophe Lancon, Christine Passerieux, Aurélie Schandrin, Mathieu Urbach, Pierre Vidailhet, Marion Leboyer, Franck Schurhoff, Pierre-Michel Llorca
INTRODUCTION: Little is known about perception of physical pain in schizophrenia (SZ). Some studies have suggested that patients with SZ may have an increased pain threshold, while others have suggested that patients with SZ may suffer from undetected and untreated high physical pain levels. The objectives of this study were (i) to investigate the prevalence of self-reported physical pain in stabilized SZ subjects, and (ii) to determine whether physical pain was associated with psychiatric characteristics and somatic comorbidities (iii) to determine whether antidepressants and benzodiazepine administration were associated with lower self-reported pain...
July 13, 2018: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/29627310/understanding-antidepressant-discontinuation-syndrome-ads-through-preclinical-experimental-models
#9
REVIEW
Konstantin N Zabegalov, Tatiana O Kolesnikova, Sergey L Khatsko, Andrey D Volgin, Oleg A Yakovlev, Tamara G Amstislavskaya, Polina A Alekseeva, Darya A Meshalkina, Ashton J Friend, Wandong Bao, Konstantin A Demin, Raul R Gainetdinov, Allan V Kalueff
Antidepressant drugs are currently one of the most prescribed medications. In addition to treatment resistance and side effects of antidepressants, their clinical use is further complicated by antidepressant discontinuation syndrome (ADS). ADS is a common problem in patients following the interruption, dose reduction, or discontinuation of antidepressant drugs. Clinically, ADS resembles a classical drug withdrawal syndrome, albeit differing from it because antidepressants generally do not induce addiction. The growing clinical importance and prevalence of ADS necessitate novel experimental (animal) models of this disorder...
June 15, 2018: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29587564/mirtazapine-attenuates-nicotine-seeking-behavior-in-rats
#10
Susana Barbosa-Méndez, Alberto Salazar-Juárez
BACKGROUND: Nicotine is the major psychoactive component of tobacco. A number of pharmacological therapies have been evaluated, with poor results. Given the lack of success of these therapies, several authors have proposed alternative therapeutic strategies. One of these is the use of antidepressant drugs that may have a specific effect on the neural pathways or receptors underlying nicotine addiction. Mirtazapine is an antagonist of α2 NE receptors (noradrenergic receptor), 5-HT2A/C and 5-HT3 receptors and has demonstrated efficacy in reducing behavioral effects induced by drugs of abuse in human and animal models...
March 1, 2018: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29562618/transdermal-and-topical-drug-administration-in-the-treatment-of-pain
#11
REVIEW
Wojciech Leppert, Malgorzata Malec-Milewska, Renata Zajaczkowska, Jerzy Wordliczek
The comprehensive treatment of pain is multidimodal, with pharmacotherapy playing a key role. An effective therapy for pain depends on the intensity and type of pain, the patients' age, comorbidities, and appropriate choice of analgesic, its dose and route of administration. This review is aimed at presenting current knowledge on analgesics administered by transdermal and topical routes for physicians, nurses, pharmacists, and other health care professionals dealing with patients suffering from pain. Analgesics administered transdermally or topically act through different mechanisms...
March 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29496589/association-of-translocator-protein-total-distribution-volume-with-duration-of-untreated-major-depressive-disorder-a-cross-sectional-study
#12
Elaine Setiawan, Sophia Attwells, Alan A Wilson, Romina Mizrahi, Pablo M Rusjan, Laura Miler, Cynthia Xu, Sarita Sharma, Stephen Kish, Sylvain Houle, Jeffrey H Meyer
BACKGROUND: People with major depressive disorder frequently exhibit increasing persistence of major depressive episodes. However, evidence for neuroprogression (ie, increasing brain pathology with longer duration of illness) is scarce. Microglial activation, which is an important component of neuroinflammation, is implicated in neuroprogression. We examined the relationship of translocator protein (TSPO) total distribution volume (VT ), a marker of microglial activation, with duration of untreated major depressive disorder, and with total illness duration and antidepressant exposure...
April 2018: Lancet Psychiatry
https://www.readbyqxmd.com/read/29494783/tianeptine-abuse-and-dependence-in-psychiatric-patients-a-review-of-18-case-reports-in-the-literature
#13
Janusz Springer, Wiesław Jerzy Cubała
Tianeptine is an atypical antidepressant approved in 25 countries for the treatment of depressive syndromes. Tianeptine abuse among psychiatric patients in the community and at inpatient wards has been increasingly reported in recent years. The purpose of this article is to alert clinicians to tianeptine abuse potential and identify any patterns in the literature. We searched the Academic Search Complete, Google Scholar, MEDLINE, Science Citation Index, Scopus, and the Social Sciences Citation Index for articles published between 1960-2017 in any language containing the keywords: "tianeptine abuse," "tianeptine misuse," "tianeptine dependence...
March 1, 2018: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/29452175/replacement-treatment-during-extinction-training-with-the-atypical-dopamine-uptake-inhibitor-jhw-007-reduces-relapse-to-methamphetamine-seeking
#14
Ashlea F Dassanayake, Juan J Canales
There are currently no approved medications to effectively counteract the effects of methamphetamine (METH), reduce its abuse and prolong abstinence from it. Data accumulated in recent years have shown that a range of N-substituted benztropine (BZT) analogues possesses psychopharmacological features consistent with those of a potential replacement or "substitute" treatment for stimulant addiction. On the other hand, the evidence that antidepressant therapy may effectively prevent relapse to stimulant seeking is controversial...
April 3, 2018: Neuroscience Letters
https://www.readbyqxmd.com/read/29339292/selective-hcn1-block-as-a-strategy-to-control-oxaliplatin-induced-neuropathy
#15
F Resta, L Micheli, A Laurino, V Spinelli, T Mello, L Sartiani, L Di Cesare Mannelli, E Cerbai, C Ghelardini, M N Romanelli, G Mannaioni, A Masi
Chemotherapy-Induced Peripheral Neuropathy (CIPN) is the most frequent adverse effect of pharmacological cancer treatments. The occurrence of neuropathy prevents the administration of fully-effective drug regimen, affects negatively the quality of life of patients, and may lead to therapy discontinuation. CIPN is currently treated with anticonvulsants, antidepressants, opioids and non-opioid analgesics, all of which are flawed by insufficient anti-hyperalgesic efficacy or addictive potential. Understandably, developing new drugs targeting CIPN-specific pathogenic mechanisms would dramatically improve efficacy and tolerability of anti-neuropathic therapies...
March 15, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29332567/nociceptin-orphanin-fq-peptide-nop-receptor-modulators-an-update-in-structure-activity-relationships
#16
Carlo Mustazza, Stefano Pieretti, Francesca Marzoli
Nociceptin /Orphanin FQ Peptide" receptor (NOPr) is a G-protein-coupled receptor with the nociceptin/orphanin FQ peptide (N/OFQ) as endogenous agonist. It is expressed in the nervous system as well as in some non-neural tissues. Its activation has pronociceptive effect at the supraspinal level, whereas at the spinal level it produces nociceptive effects at low doses and antinociceptive effects at higher doses. NOPr is also involved in mood and blood pressure regulation, immunoregulation, airway constriction, feeding, urination, bowel motility, learning and memory...
January 10, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29178034/pharmacotherapy-for-neuropathic-pain-a-review
#17
REVIEW
Diego Fornasari
Neuropathic pain, comprising a range of heterogeneous conditions, is often severe and difficult to manage, and this may result in a chronic condition that negatively affects the overall functioning and quality of life in patients. The pharmacotherapy of neuropathic pain is challenging and for many patients effective treatment is lacking; therefore, evidence-based recommendations are essential. Currently, there is general agreement on which drugs are appropriate for the first-line treatment of neuropathic pain, whereas debate continues regarding second- and third-line treatments...
December 2017: Pain and Therapy
https://www.readbyqxmd.com/read/29162499/metabolic-strategies-for-the-degradation-of-the-neuromodulator-agmatine-in-mammals
#18
REVIEW
José Benítez, David García, Nicol Romero, Arlette González, José Martínez-Oyanedel, Maximiliano Figueroa, Mónica Salas, Vasthi López, María García-Robles, Peter R Dodd, Gerhard Schenk, Nelson Carvajal, Elena Uribe
Agmatine (1-amino-4-guanidinobutane), a precursor for polyamine biosynthesis, has been identified as an important neuromodulator with anticonvulsant, antineurotoxic and antidepressant actions in the brain. In this context it has emerged as an important mediator of addiction/satiety pathways associated with alcohol misuse. Consequently, the regulation of the activity of key enzymes in agmatine metabolism is an attractive strategy to combat alcoholism and related addiction disorders. Agmatine results from the decarboxylation of L-arginine in a reaction catalyzed by arginine decarboxylase (ADC), and can be converted to either guanidine butyraldehyde by diamine oxidase (DAO) or putrescine and urea by the enzyme agmatinase (AGM) or the more recently identified AGM-like protein (ALP)...
April 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29076955/knowledge-and-preferences-regarding-antidepressant-medication-among-depressed-latino-patients-in-primary-care
#19
Bonnie L Green, Maria Rosa Watson, Stacey I Kaltman, Adriana Serrano, Nicholas Talisman, Laura Kirkpatrick, Marcela Campoli
US Latinos are less likely to utilize mental health services than non-Latino whites and to take antidepressant medications. This mixed-method study followed a subset (N = 28) of a research sample of depressed Latino immigrant primary care patients, who took depression medication, with a telephone interview to study their knowledge about and experiences with antidepressant medications. Most (82%) reported taking medication for 2 months or more, and 75% reported feeling better, whereas more than half reported side effects...
December 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/28948570/ketamine-self-administration-elevates-%C3%AE-camkii-autophosphorylation-in-mood-and-reward-related-brain-regions-in-rats
#20
Lucia Caffino, Alessandro Piva, Francesca Mottarlini, Marzia Di Chio, Giuseppe Giannotti, Cristiano Chiamulera, Fabio Fumagalli
Modulation of αCaMKII expression and phosphorylation is a feature shared by drugs of abuse with different mechanisms of action. Accordingly, we investigated whether αCaMKII expression and activation could be altered by self-administration of ketamine, a non-competitive antagonist of the NMDA glutamate receptor, with antidepressant and psychotomimetic as well as reinforcing properties. Rats self-administered ketamine at a sub-anesthetic dose for 43 days and were sacrificed 24 h after the last drug exposure; reward-related brain regions, such as medial prefrontal cortex (PFC), ventral striatum (vS), and hippocampus (Hip), were used for the measurement of αCaMKII-mediated signaling...
September 25, 2017: Molecular Neurobiology
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