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Methylphenidate

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https://www.readbyqxmd.com/read/29348190/pronounced-hyperactivity-cognitive-dysfunctions-and-bdnf-dysregulation-in-dopamine-transporter-knockout-rats
#1
Damiana Leo, Ilya Sukhanov, Francesca Zoratto, Placido Illiano, Lucia Caffino, Fabrizio Sanna, Giulia Messa, Marco Emanuele, Alessandro Esposito, Maria Dorofeikova, Evgeny A Budygin, Liudmila Mus, Evgenia E Efimova, Marco Niello, Stefano Espinoza, Tatyana D Sotnikova, Marius C Hoener, Gianni Laviola, Fabio Fumagalli, Walter Adriani, Raul R Gainetdinov
Dopamine (DA) controls many vital physiological functions and is critically involved in several neuropsychiatric disorders such as schizophrenia and attention deficit hyperactivity disorder (ADHD). The major function of the plasma membrane dopamine transporter (DAT) is the rapid uptake of released DA into presynaptic nerve terminals leading to control of both the extracellular levels of DA and the intracellular stores of DA. Here, we present a newly developed strain of rats (DAT-knockout, DAT-KO rats) in which the gene encoding the DAT has been disrupted by using zinc finger nuclease technology (ZFN)...
January 18, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29347996/the-apathy-in-dementia-methylphenidate-trial-2-admet-2-study-protocol-for-a-randomized-controlled-trial
#2
Roberta W Scherer, Lea Drye, Jacobo Mintzer, Krista Lanctôt, Paul Rosenberg, Nathan Herrmann, Prasad Padala, Olga Brawman-Mintzer, William Burke, Suzanne Craft, Alan J Lerner, Allan Levey, Anton Porsteinsson, Christopher H van Dyck
BACKGROUND: Alzheimer's disease (AD) is characterized not only by cognitive and functional decline, but also often by the presence of neuropsychiatric symptoms. Apathy, which can be defined as a lack of motivation, is one of the most prevalent neuropsychiatric symptoms in AD and typically leads to a worse quality of life and greater burden for caregivers. Treatment options for apathy in AD are limited, but studies have examined the use of the amphetamine, methylphenidate. The Apathy in Dementia Methylphenidate Trial (ADMET) found that treatment of apathy in AD with methylphenidate was associated with significant improvement in apathy in two of three outcome measures, some evidence of improvement in global cognition, and minimal adverse events...
January 18, 2018: Trials
https://www.readbyqxmd.com/read/29346342/attention-deficit-hyperactivity-disorder-medication-prescription-claims-among-privately-insured-women-aged-15-44-years-united-states-2003-2015
#3
Kayla N Anderson, Elizabeth C Ailes, Melissa Danielson, Jennifer N Lind, Sherry L Farr, Cheryl S Broussard, Sarah C Tinker
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that affects individuals across the lifespan. ADHD medication use among pregnant women is increasing (1), but consensus about the safety of ADHD medication use during pregnancy is lacking. Given that nearly half of U.S. pregnancies are unintended (2), and early pregnancy is a critical period for fetal development, examining trends in ADHD medication prescriptions among reproductive-aged women is important to quantify the population at risk for potential exposure...
January 19, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29341240/a-case-report-and-literature-review-of-autism-and-attention-deficit-hyperactivity-disorder-in-paediatric-chronic-pain
#4
Camilla Wiwe Lipsker, Margareta von Heijne, Sven Bölte, Rikard K Wicksell
Psychiatric disorders are common in paediatric patients with chronic pain, but the overall prevalence of comorbid neurodevelopmental disorders is unclear. We report on a case of severe chronic pain in a child with undiagnosed comorbid autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD), where significant improvements in pain and function occurred following methylphenidate medication and parental behavioural training. CONCLUSION: The inclusion of behavioural assessment and screening for neurodevelopmental comorbidity may be essential in addressing complex paediatric chronic pain...
January 17, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29339293/methylphenidate-significantly-alters-the-functional-coupling-between-the-prefrontal-cortex-and-dopamine-neurons-in-the-ventral-tegmental-area
#5
Ike C Dela Peña, Guofang Shen, Wei-Xing Shi
Amphetamine-like psychostimulants, including methylphenidate, have been shown to produce two opposing effects on dopamine (DA) neurons: a DA receptor-mediated feedback inhibition and a non-DA receptor-mediated excitation. To test whether the latter effect is mediated through the prefrontal cortex (PFC), we made dual-site recordings from the PFC and ventral tegmental area (VTA). Consistent with previous reports, methylphenidate inhibited VTA DA neurons. The D2 receptor antagonist raclopride completely reversed the inhibition and further increased the activity, particularly bursting, to above pre-drug baseline...
January 12, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29332255/profiling-attention-and-cognition-enhancing-drugs-in-a-rat-touchscreen-based-continuous-performance-test
#6
Zhiyong Ding, Jordan W Brown, Lynne E Rueter, Eric G Mohler
RATIONALE: A novel rodent continuous performance test (CPT) was developed as one of the goals of the NEWMEDS (Novel Methods leading to New Medications in Depression and Schizophrenia) consortium to improve its translatability to the CPT test used in human subjects. OBJECTIVES: The objective of the study is to investigate the effects of attention and cognition enhancing drugs in rodent CPT. METHODS: A single cohort of rats were trained to asymptotic performance in the test...
January 13, 2018: Psychopharmacology
https://www.readbyqxmd.com/read/29317696/unraveling-individual-differences-in-the-hiv-1-transgenic-rat-therapeutic-efficacy-of-methylphenidate
#7
Kristen A McLaurin, Hailong Li, Rosemarie M Booze, Amanda J Fairchild, Charles F Mactutus
Despite the heterogeneity of HIV-1 associated neurocognitive disorders (HAND), assignment of categorical diagnoses based on the level of impairment (e.g., Frascati criteria) obfuscates the well-acknowledged variability observed within the population of HIV-1+ individuals. The present study sought to elucidate the natural heterogeneity in adult HIV-1 transgenic (Tg) rats using three interrelated aims. First, heterogeneity of the HIV-1 transgene was examined using a pretest-posttest design to assess therapeutic efficacy of oral self-administration (OSA) of methylphenidate (MPH; 2...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29298167/newly-developed-skin-picking-after-methylphenidate-treatment-in-attention-deficit-hyperactivity-disorder-possible-mechanisms
#8
Tayfun Kara, İsmail Akaltun
Dermatillomania is characterized by excessive and repeated skin picking sufficient to damage cutaneous tissue, but with no underlying dermatological disease. The condition appears as an independent diagnosis in the Obsessive-Compulsive and Related Disorders category in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. A psychiatric pathology is generally reported to accompany this symptom. Attention deficit hyperactivity disorder (ADHD) is a potentially lifelong condition involving inattentiveness, hyperactivity, and impulsiveness...
January 2, 2018: Clinical Neuropharmacology
https://www.readbyqxmd.com/read/29290022/omega-3-fatty-acids-supplementation-with-lithium-and-aripiprazole-for-improving-the-balance-of-circulating-hormones-and-brain-neurotransmitters-in-manic-mice-model
#9
Pandiyan Arunagiri, Elumalai Balamurugan, Murugesan Saravanakumar, Mackraj Irene
The present study was designed to evaluate the combined effect of lithium and aripiprazole supplemented with omega-3 fatty acids in methylphenidate (MPD)-induced manic mice. Swiss albino mice were administered with MPD or saline for 14 days, and based on changes in behavioral activities animals were treated with lithium, aripiprazole, and omega-3 fatty acids from the 8th day. Behavioral patterns were analyzed by video tracking. Thyroxine, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone levels were assayed in serum using ELISA kits...
December 30, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29288690/mifepristone-reduces-hypothalamo-pituitary-adrenal-axis-activation-and-restores-weight-loss-in-rats-subjected-to-dietary-restriction-and-methylphenidate-administration
#10
Rami Bou Khalil, Viviane Smayra, Youakim Saliba, Joelle Hajal, Jules-Joël Bakhos, Lama Souaiby, Sami Richa, Jean Tamraz, Nassim Farès
This study evaluates the efficacy of mifepristone on weight restoration in rats subjected to dietary restriction and methylphenidate administration. 25 female rats aged between 9 and 12 months were divided into 2 groups: 5 controls (exposed only to dietary restriction) and 20 rats that were administered 5 mg/kg/d of methylphenidate before meal exposure, for 36 days. Among rats who responded to methylphenidate (weight loss of 15-25%) weeks after its administration, a group of 6 rats continued to receive only methylphenidate ("Met" group), and another group received 10 mg/kg/d of mifepristone in addition to methylphenidate for 18 days ("Met+Mif" group; n = 6)...
December 27, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/29288365/methylphenidate-disrupts-cytoskeletal-homeostasis-and-reduces-membrane-associated-lipid-content-in-juvenile-rat-hippocampus
#11
Felipe Schmitz, Paula Pierozan, Helena Biasibetti-Brendler, Fernanda Silva Ferreira, Fernanda Dos Santos Petry, Vera Maria Treis Trindade, Regina Pessoa-Pureur, Angela T S Wyse
Although methylphenidate (MPH) is ubiquitously prescribed to children and adolescents, the consequences of chronic utilization of this psychostimulant are poorly understood. In this study, we investigated the effects of MPH on cytoskeletal homeostasis and lipid content in rat hippocampus. Wistar rats received intraperitoneal injections of MPH (2.0 mg/kg) or saline solution (controls), once a day, from the 15th to the 44th day of age. Results showed that MPH provoked hypophosphorylation of glial fibrillary acidic protein (GFAP) and reduced its immunocontent...
December 29, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29244542/differential-long-term-medication-impact-on-executive-function-and-delay-aversion-in-adhd
#12
Belen Rubio Morell, Sergio Hernández Expósito
The objective was to compare long-term effects of methylphenidate (MPH) and atomoxetine (ATX) on executive functions (EF) and delay aversion (DAv) in ADHD. A randomized controlled trial was conducted. A comprehensive neuropsychological battery was administered at three moments (Naive, Post-1, Post-2). ADHD participants who showed deficits in the naive evaluation (n = 26) were randomized to receive either MPH (n = 13; Mage = 11 ± 1, MIQ 96 ± 8) or ATX (n = 13; Mage = 10 ± 1, MIQ 106 ± 16...
December 15, 2017: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/29238801/shedding-light-on-the-risks-of-methylphenidate-and-amphetamine-in-pregnancy
#13
William O Cooper
No abstract text is available yet for this article.
December 13, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29238795/association-between-methylphenidate-and-amphetamine-use-in-pregnancy-and-risk-of-congenital-malformations-a-cohort-study-from-the-international-pregnancy-safety-study-consortium
#14
Krista F Huybrechts, Gabriella Bröms, Lotte Brix Christensen, Kristjana Einarsdóttir, Anders Engeland, Kari Furu, Mika Gissler, Sonia Hernandez-Diaz, Pär Karlsson, Øystein Karlstad, Helle Kieler, Anna-Maria Lahesmaa-Korpinen, Helen Mogun, Mette Nørgaard, Johan Reutfors, Henrik Toft Sørensen, Helga Zoega, Brian T Bateman
Importance: Given the rapidly increasing use of stimulant medications during pregnancy and among women of reproductive age who may become pregnant inadvertently, there is a need to better understand their safety. Objective: To examine the risk of congenital malformations associated with intrauterine exposure to stimulants. Design, Setting, and Participants: Cohort study of the Medicaid-insured population in the United States nested in the 2000-2013 US Medicaid Analytic eXtract, with follow-up of safety signals detected in the Medicaid Analytic eXtract data using the Nordic Health registries (2003-2013) (Denmark, Finland, Iceland, Norway, and Sweden)...
December 13, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29237601/methylphenidate-during-pregnancy-linked-to-small-risk-of-cardiac-malformations
#15
Jacqui Wise
No abstract text is available yet for this article.
December 13, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29237331/autism-spectrum-disorder-consensus-guidelines-on-assessment-treatment-and-research-from-the-british-association-for-psychopharmacology
#16
Oliver D Howes, Maria Rogdaki, James L Findon, Robert H Wichers, Tony Charman, Bryan H King, Eva Loth, Gráinne M McAlonan, James T McCracken, Jeremy R Parr, Carol Povey, Paramala Santosh, Simon Wallace, Emily Simonoff, Declan G Murphy
An expert review of the aetiology, assessment, and treatment of autism spectrum disorder, and recommendations for diagnosis, management and service provision was coordinated by the British Association for Psychopharmacology, and evidence graded. The aetiology of autism spectrum disorder involves genetic and environmental contributions, and implicates a number of brain systems, in particular the gamma-aminobutyric acid, serotonergic and glutamatergic systems. The presentation of autism spectrum disorder varies widely and co-occurring health problems (in particular epilepsy, sleep disorders, anxiety, depression, attention deficit/hyperactivity disorder and irritability) are common...
December 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/29236514/past-methylphenidate-exposure-and-stress-fractures-in-combat-soldiers-a-case-control-study
#17
Haggai Schermann, Ilan Shalom Ben-Ami, Adrian Tudor, Eyal Amar, Ehud Rath, Ran Yanovich
BACKGROUND: Previous research has revealed decreased bone mineral density (BMD) among children and adolescents who receive methylphenidate (MP) treatment for attention deficit hyperactivity disorder (ADHD). These findings have major clinical implications given that the prevalence of medication-treated ADHD is on the rise worldwide. We decided to investigate the clinical effect of MP exposure on the incidence of stress fractures, for which a low BMD is a risk factor. HYPOTHESIS: Exposure to MP is a risk factor for stress fractures...
December 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29230023/pharmacogenetics-predictors-of-methylphenidate-efficacy-in-childhood-adhd
#18
N M Myer, J R Boland, S V Faraone
Stimulant medication has long been effective in treating attention-deficit/hyperactivity disorder (ADHD) and is currently the first-line pharmacological treatment for children. Both methylphenidate and amphetamine modulate extracellular catecholamine levels through interaction with dopaminergic, adrenergic and serotonergic system components; it is therefore likely that catecholaminergic molecular components influence the effects of ADHD treatment. Using meta-analysis, we sought to identify predictors of pharmacotherapy to further the clinical implementation of personalized medicine...
December 12, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29224920/-pharmaceutical-cognitive-doping-in-students-a-chimeric-way-to-get-a-head
#19
Louise Carton, Nicolas Cabé, Olivier Ménard, Sylvie Deheul, Anne-Sylvie Caous, David Devos, Olivier Cottencin, Régis Bordet
For students, the pressing demands for memorization, top-level performance, and peer competition create an environment favorable for pharmaceutical cognitive doping behavior. We aimed to describe recent practices and the benefit / risk ratio of such behavior and to discuss the issues at stake. The prevalence of pharmaceutical cognitive doping among students has been reported from 1.3% to 33% across studies, with variations depending on country and definition of pharmaceutical cognitive doping. The therapeutic classes most frequently cited as being diverted for doping purposes are psychostimulants and nootropics (methylphenidate, modafinil, piracetam), corticosteroids, sedative drugs and beta-blockers...
November 22, 2017: Thérapie
https://www.readbyqxmd.com/read/29221813/neonatal-programming-with-testosterone-propionate-reduces-dopamine-transporter-expression-in-nucleus-accumbens-and-methylphenidate-induced-locomotor-activity-in-adult-female-rats
#20
Tatiana Dib, Jonathan Martínez-Pinto, Miguel Reyes-Parada, Gonzalo E Torres, Ramón Sotomayor-Zárate
Research in programming is focused on the study of stimuli that alters sensitive periods in development, such as prenatal and neonatal stages, that can produce long-term deleterious effects. These effects can occur in various organs or tissues such as the brain, affecting brain circuits and related behaviors. Our laboratory has demonstrated that neonatal programming with sex hormones affects the mesocorticolimbic circuitry, increasing the synthesis and release of dopamine (DA) in striatum and nucleus accumbens (NAcc)...
December 5, 2017: Behavioural Brain Research
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