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https://www.readbyqxmd.com/read/28725548/age-dependent-lasting-effects-of-methylphenidate-on-the-gabaergic-system-of-adhd-patients
#1
Michelle M Solleveld, Anouk Schrantee, Nicolaas A J Puts, Liesbeth Reneman, Paul J Lucassen
Stimulants are the main pharmacological treatment for patients with attention-deficit/hyperactivity disorder (ADHD). Their current prescription rates are rising, both in children, adolescents and adults. Related to the impulse control phenotype, both preclinical and clinical studies have demonstrated lower γ-amino butyric acid (GABA) levels in prefrontal brain regions in ADHD. Whereas stimulant treatment increases GABA levels, preclinical studies have suggested that stimulant treatment effects may be age-dependent...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28720013/the-5-ht1b-serotonin-receptor-regulates-methylphenidate-induced-gene-expression-in-the-striatum-differential-effects-on-immediate-early-genes
#2
David Alter, Joel A Beverley, Ronak Patel, Carlos A Bolaños-Guzmán, Heinz Steiner
Drug combinations that include a psychostimulant such as methylphenidate (Ritalin) and a selective serotonin reuptake inhibitor such as fluoxetine are indicated in several medical conditions. Co-exposure to these drugs also occurs with "cognitive enhancer" use by individuals treated with selective serotonin reuptake inhibitors. Methylphenidate, a dopamine reuptake inhibitor, by itself produces some addiction-related gene regulation in the striatum. We have demonstrated that co-administration of selective serotonin reuptake inhibitors potentiates these methylphenidate-induced molecular effects, thus producing a more "cocaine-like" profile...
July 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28719424/excessive-and-frequent-menstrual-bleeding-with-methylphenidate-in-an-adolescent-girl-with-attention-deficit-hyperactivity-disorder
#3
Murat Coskun, Ibrahim Adak
No abstract text is available yet for this article.
July 17, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28713515/effectiveness-of-methylphenidate-and-pufa-for-the-treatment-of-patients-with-adhd-a-double-blinded-randomized-clinical-trial
#4
Mahbobeh Firouzkouhi Moghaddam, Maryam Shamekhi, Tayebeh Rakhshani
BACKGROUND: In some children with ADHD, sub-optimal levels of various nutrients including PUFA especially omega-3 has been observed, and contradictory reports exist on the results of studies conducted on the positive therapeutic effects of PUFA in patients with ADHD. OBJECTIVE: The aim of this study was to investigate the effectiveness of methylphenidate and PUFA on treatment of patients with ADHD in Zahedan, Iran. METHODS: In this clinical trial, 40 children between 6 and 12 years of age with ADHD were investigated in Zahedan in 2014...
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28710695/serum-brain-derived-neurotrophic-factor-levels-in-treatment-na%C3%A3-ve-boys-with-attention-deficit-hyperactivity-disorder-treated-with-methylphenidate-an-8-week-observational-pretest-posttest-study
#5
Aynur Pekcanlar Akay, Halil Resmi, Sevay Alsen Güney, Handan Özek Erkuran, Gonca Özyurt, Enis Sargin, Ahmet Topuzoglu, Ali Evren Tufan
Brain-derived neurotrophic factor (BDNF) is an important neurotrophin in the brain that modulates dopaminergic neurons. In this study, we aimed to investigate the changes in serum BDNF levels of children with attention-deficit/hyperactivity disorder (ADHD) in response to OROS methylphenidate treatment. We also aimed to determine whether there were any pre-post-differences between ADHD subtypes and comorbid psychiatric disorders in serum BDNF levels. Fifty male children with ADHD and 50 male healthy controls within the age range of 6-12 years were recruited to the study...
July 14, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28705922/the-cochrane-collaboration-withdraws-a-review-on-methylphenidate-for-adults-with-attention-deficit-hyperactivity-disorder
#6
Kim Boesen, Luis Carlos Saiz, Juan Erviti, Ole Jakob Storebø, Christian Gluud, Peter C Gøtzsche, Karsten Juhl Jørgensen
A Cochrane systematic review on immediate-release methylphenidate for adults with attention deficit hyperactivity disorder (ADHD) was withdrawn from the Cochrane Library on 26 May 2016 after substantial criticism of its methods and flawed conclusions. Retraction of scientific papers on this basis is unusual but can be necessary. We provide a summary of the criticism that led to the withdrawal. We detail the methodological flaws of the withdrawn Cochrane systematic review and general issues of bias and shortcomings of the included ADHD trials: cross-over designs compared with parallel-group designs, exclusion of participants with psychiatric comorbidity, absence of 'functional outcomes' and use of clinical outcomes with limited relevance, short trial duration and small trial populations, broken blinding caused by easily recognisable side effects, combining outcome assessments by trial investigators and participants, outcome reporting bias, poor evaluation of cardiovascular and psychiatric harms and conflicts of interest of trialists and systematic reviewers...
July 13, 2017: Evidence-based Medicine
https://www.readbyqxmd.com/read/28705298/methamphetamine-related-disorders
#7
Euphrosyne Gouzoulis-Mayfrank, Roland Härtel-Petri, Willem Hamdorf, Ursula Havemann-Reinecke, Stephan Mühlig, Norbert Wodarz
BACKGROUND: Methamphetamine is considered more dangerous than other stimulants because of its acute complications, long-term neurotoxicity, and potential for drug dependence. Until now, there have been no evidence-based guidelines for the treatment of methamphetamine-related disorders, either in Germany or abroad. METHODS: A systematic literature search was performed on the treatment of methamphetamine-related disorders. Based on this literature review, a multidisciplinary expert panel developed recommendations using the nominal group technique...
June 30, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28700715/the-pharmacological-and-non-pharmacological-treatment-of-attention-deficit-hyperactivity-disorder-in-children-and-adolescents-a-systematic-review-with-network-meta-analyses-of-randomised-trials
#8
Ferrán Catalá-López, Brian Hutton, Amparo Núñez-Beltrán, Matthew J Page, Manuel Ridao, Diego Macías Saint-Gerons, Miguel A Catalá, Rafael Tabarés-Seisdedos, David Moher
BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is one of the most commonly diagnosed psychiatric disorders in childhood. A wide variety of treatments have been used for the management of ADHD. We aimed to compare the efficacy and safety of pharmacological, psychological and complementary and alternative medicine interventions for the treatment of ADHD in children and adolescents. METHODS AND FINDINGS: We performed a systematic review with network meta-analyses...
2017: PloS One
https://www.readbyqxmd.com/read/28700116/an-integrative-literature-review-exploring-the-clinical-management-of-delirium-in-patients-with-advanced-cancer
#9
REVIEW
Hayley Lawley, Alistair Hewison
AIM: The aim of this paper is to present the findings of an integrative literature review of the evidence for the clinical management of delirium in patients with advanced cancer. BACKGROUND: Patients with advanced cancer frequently experience delirium which can be distressing for both patients and their families. Current guidelines recommend that underlying causes of the delirium be addressed and a course of antipsychotics considered. However the research into the effectiveness of treatments for delirium in people with advanced cancer is limited...
July 12, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28690202/the-impact-of-methylphenidate-and-its-enantiomers-on-dopamine-synthesis-and-metabolism-in-vitro
#10
Jasmin Bartl, Ferruccio Palazzesi, Michele Parrinello, Leif Hommers, Peter Riederer, Susanne Walitza, Edna Grünblatt
Methylphenidate (MPH), a psychostimulant, is an effective first-line treatment for the symptoms associated with Attention-Deficit/Hyperactivity Disorder (ADHD). Although most MPH formulations are composed of the racemic 1:1 mixture of the two enantiomers (d- and l-threo), converging lines of evidence indicate that d-threo MPH seems to be superior to the l-isomer. We aimed to investigate whether MPH racemic mixture or pure enantiomers influence the enzyme activity of tyrosine hydroxylase (TH), monoamine oxidase B (MAO-B), catechol-O-methyltransferase (COMT), and aldehyde dehydrogenase (ALDH) in vitro in homogenates of rat PC12 cells incubated with racemic, d- and l-threo MPH (1nM up to 100μM), or a vehicle for control...
July 8, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28684948/methylphenidate-brain-gain-for-the-epilepsy-drain
#11
COMMENT
Jong Woo Lee
No abstract text is available yet for this article.
May 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28682529/risk-of-irritability-with-psychostimulant-treatment-in-children-with-adhd-a-meta-analysis
#12
Zachary D Stuckelman, Jilian M Mulqueen, Eduardo Ferracioli-Oda, Stephanie C Cohen, Catherine G Coughlin, James F Leckman, Michael H Bloch
OBJECTIVE: Irritability is listed as a common side effect of psychostimulant medications. However, psychostimulants have been demonstrated as an effective treatment in reducing irritability and aggression in children with attention-deficit/hyperactivity disorder (ADHD). The goal of this study was to quantify the risk of irritability as a side effect of psychostimulant treatment for ADHD. DATA SOURCES AND STUDY SELECTION: A PubMed search was conducted on August 18, 2013, to identify all double-blind, randomized, placebo-controlled trials published in English examining the efficacy of psychostimulant medications in the treatment of children with ADHD...
June 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28677880/study-of-the-in-vitro-and-in-vivo-metabolism-of-the-tryptamine-5-meo-mipt-using-human-liver-microsomes-and-real-case-samples
#13
Katharina Elisabeth Grafinger, Marianne Hädener, Stefan König, Wolfgang Weinmann
The synthetic tryptamine 5-methoxy-N-methyl-N-isopropyltryptamine (5-MeO-MiPT) has recently been abused as a hallucinogenic drug in Germany and Switzerland. This study presents a case of 5-MeO-MiPT intoxication and the structural elucidation of metabolites in pooled human liver microsomes (pHLM), blood, and urine. Microsomal incubation experiments were performed using pHLM to detect and identify in vitro metabolites. In August 2016, the police encountered a naked man, agitated and with aggressive behavior on the street...
July 5, 2017: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28673794/giggle-incontinence-evolution-of-concept-and-treatment
#14
REVIEW
Bridget Linehan Logan, Samantha Blais
BACKGROUND: Giggle incontinence is a sudden and involuntary episode of urinary incontinence that is provoked by an episode of laughter. Decades of case studies and small research studies have formed the basis of what is known about giggle incontinence; however, much remains unknown about this type of incontinence, leaving the recommendations for clinical management somewhat unguided. METHODS: A systematic review of 22 articles on the topic of "giggle incontinence" and related terms was conducted, including all published articles and commentaries since the term was first seen in print in 1959...
June 7, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28672285/the-effect-of-attention-deficit-hyperactivity-disorder-and-methylphenidate-treatment-on-the-adult-auditory-temporal-order-judgment-threshold
#15
Leah Fostick
Purpose: The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition notes that attention-deficit/hyperactivity disorder (ADHD) diagnosed in childhood will persist into adulthood among at least some individuals. There is a paucity of evidence, however, regarding whether other difficulties that often accompany childhood ADHD will also continue into adulthood, specifically auditory processing deficits. The aim of this study was to examine the effect of ADHD and the stimulant medication methylphenidate on auditory perception performance among adults...
July 3, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28669538/the-effect-of-methylphenidate-on-the-microstructure-of-schedule-induced-polydipsia-in-an-animal-model-of-adhd
#16
Javier Íbias, Carter W Daniels, Miguel Miguéns, Ricardo Pellón, Federico Sanabria
Schedule-induced polydipsia (SIP) was established in spontaneously hypertensive rats (SHR), Wistar Kyoto rats (WKY), and Wistar rats, using a multiple fixed-time (FT) schedule of food delivery, with 30- and 90-s components. Thereafter, animals were exposed to methylphenidate (MPH; 2.5mg/kg/d) for six consecutive SIP sessions. A test to assess possible sensitization effects was also conducted four days after termination of the drug treatment. At baseline, FT 90-s produced longer and more frequent drinking episodes in SHR than in WKY...
June 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28666710/homozygous-alpha-synuclein-p-a53v-in-familial-parkinson-s-disease
#17
Hiroyo Yoshino, Makito Hirano, A Jon Stoessl, Yoko Imamichi, Aya Ikeda, Yuanzhe Li, Manabu Funayama, Ikuko Yamada, Yusaku Nakamura, Vesna Sossi, Matthew J Farrer, Kenya Nishioka, Nobutaka Hattori
We have assessed the frequency of alpha-synuclein (SNCA) mutations in Japanese patients with familial or sporadic Parkinson's disease (PD) and surveyed their associated clinical manifestations. We screened SNCA exon 3 in 988 patients without SNCA multiplications (430 with autosomal dominant PD and 558 with sporadic PD). We detected 1 patient harboring a homozygous SNCA p.A53V substitution albeit with an autosomal dominant pattern of disease inheritance (frequency 2/860 = 0.2%). The proband manifested slow and progressive parkinsonism at 55 years...
June 27, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28665917/brief-psychosis-induced-by-methylphenidate-in-a-child-with-attention-deficit-disorder-a-case-report-and-literature-review
#18
Juan Carlos Martínez-Aguayo, Marcelo Arancibia, Nicolás Meza-Concha, Camila Bustamante, Javier Pérez-Bracchiglione, Eva Madrid
Methylphenidate-induced psychosis has been scarcely studied due to bioethical and neurobiological issues regarding its research. Although some authors have hypothesized that there might be a vulnerability for the development of a major psychiatric disorder in the long term, there is no agreement about the predictive value of this type of psychosis in children and adolescents, and its origin is also uncertain. It has been suggested that higher dopamine levels in some cerebral regions and a family history of mental disorders might increase the risk of psychosis secondary to psychostimulants...
June 21, 2017: Medwave
https://www.readbyqxmd.com/read/28664541/placebo-response-and-its-determinants-in-children-with-adhd-across-multiple-observers-and-settings-a-randomized-clinical-trial
#19
Weam Fageera, Alexandru Traicu, Sarojini M Sengupta, Marie-Eve Fortier, Zia Choudhry, Aurélie Labbe, Natalie Grizenko, Ridha Joober
This study aims to quantify placebo response (PR) in children with attention deficit hyperactivity disorder (ADHD) as assessed by parents and teachers and to explore some of its determinants. Five hundred and forty children with ADHD (ages 6-12) were recruited to a randomized, double-blind, placebo-controlled crossover trial with methylphenidate. The main outcome variable was Conners' Global Index (CGI), based on assessment of behaviour by parents (CGI-P) and teacher (CGI-T). PR was calculated as the difference between CGI-P/T scores at baseline and placebo week...
June 30, 2017: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/28656805/verbal-working-memory-related-functional-connectivity-alterations-in-boys-with-attention-deficit-hyperactivity-disorder-and-the-effects-of-methylphenidate
#20
Zhao-Min Wu, Janita Bralten, Li An, Qing-Jiu Cao, Xiao-Hua Cao, Li Sun, Lu Liu, Li Yang, Maarten Mennes, Yu-Feng Zang, Barbara Franke, Martine Hoogman, Yu-Feng Wang
OBJECTIVE: Few studies have investigated verbal working memory-related functional connectivity patterns in participants with attention-deficit/hyperactivity disorder (ADHD). Thus, we aimed to compare working memory-related functional connectivity patterns in healthy children and those with ADHD, and study effects of methylphenidate (MPH). METHOD: Twenty-two boys with ADHD were scanned twice, under either MPH (single dose, 10 mg) or placebo, in a randomised, cross-over, counterbalanced placebo-controlled design...
June 1, 2017: Journal of Psychopharmacology
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