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https://www.readbyqxmd.com/read/28633952/chronic-methylphenidate-regulates-genes-and-proteins-mediating-neuroplasticity-in-the-juvenile-rat-brain
#1
Emmanuel Quansah, Tiziana Sgamma, Estabraq Jaddoa, Tyra S C Zetterström
Methylphenidate (MPH) is the front-line psychostimulant medication prescribed for alleviating the symptoms associated with attention deficit hyperactivity disorder (ADHD) in children. Here, we investigated the effects of chronic MPH (2.0mg/kg, twice daily for 15 days) exposure to young rats (20-25days old at start of treatment) on the expression of genes and proteins associated with neuroplasticity, such as activity regulated cytoskeleton-associated protein (Arc), insulin receptor substrate protein 53 (IRSp53), cell division control protein 42 (Cdc42), and actin-related protein 2 (Arp2)...
June 17, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28630628/staphylococcus-saprophyticus-recovered-from-humans-food-and-recreational-waters-in-rio-de-janeiro-brazil
#2
Viviane Santos de Sousa, Ana Paula de Souza da-Silva, Leif Sorenson, Raphael Paiva Paschoal, Renata Fernandes Rabello, Eloiza Helena Campana, Márcia Soares Pinheiro, Lyssa Oliveira Ferreira Dos Santos, Natacha Martins, Ana Carolina Nunes Botelho, Renata Cristina Picão, Sérgio Eduardo Longo Fracalanzza, Lee Woodland Riley, George Sensabaugh, Beatriz Meurer Moreira
Staphylococcus saprophyticus is an important agent of urinary tract infection (UTI) in young women, but information about this pathogen in human microbiota and in common environment is lacking. The aim of this study was to characterize S. saprophyticus isolates from genitoanal microbiota of 621 pregnant women, 10 minas cheese packs, and five beaches in Rio de Janeiro city and compare PFGE profiles of these isolates with five UTI PFGE clusters described in this city. We investigated 65 S. saprophyticus isolates from microbiota, 13 from minas cheese, and 30 from beaches and 32 UTI isolates...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28616427/specific-genes-associated-with-adverse-events-of-methylphenidate-use-in-the-pediatric-population-a-systematic-literature-review
#3
REVIEW
Beinta Joensen, Morten Meyer, Lise Aagaard
The aim of this study was to review empirical studies examining associations between candidate genes and adverse events (AEs) from methylphenidate (MPH) use in children and adolescents. The PubMed, EMBASE, CINAHL, and Web of Science databases were searched from their inception until March 2017. We included empirically based articles on pharmacogenetic studies in 0-17-year-old patients that investigated associations between specific candidate genes, their polymorphisms, and reported AEs. We extracted information about study design, setting, type of AE reporter, studied genes and their polymorphisms, age and gender, administered doses, method of genotyping, outcome measures, and main findings...
April 2017: Journal of Research in Pharmacy Practice
https://www.readbyqxmd.com/read/28616366/increased-energy-cost-of-mobility-in-chronic-stroke
#4
Monica C Serra, Margarita S Treuth, Charlene E Hafer-Macko, Alice S Ryan
The purpose of this study was to compare the energy cost of completing mobility-related activities in chronic stroke to the estimated energy cost found in the compendium of physical activities, a resource that estimates and classifies energy cost of various human physical activities. Men (n=18) and women (n=10) with chronic hemiparetic gait (stroke latency: 4 ± 2 years, age: 60.4 ± 1.6 years, BMI: 31.5 ± 1.1 kg/m(2)) participated in the study. Portable energy cost monitoring (COSMED K4b2) was performed during five mobility activities of varying intensity to determine metabolic equivalents (METs, or oxygen consumption in multiples of resting level) for each activity...
December 2016: Journal of Gerontology & Geriatric Research
https://www.readbyqxmd.com/read/28614475/-positioning-ecuador-in-the-global-health-agenda-as-a-result-of-sector-reform
#5
Cristina Luna, Carlos Andrés Emanuele, Daniel De La Torre
Objective: Analyze strategies implemented by Ecuador's Ministry of Public Health (MPH) to position the country in the global health agenda during the period 2011-2015 as a result of health sector reform. Method: Documentary review and interviews with stakeholders in national and international agencies with respect to positioning in the global health sphere during the study period. Results: It was observed that the reform process produced a new framework to manage international health relations...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28614472/-human-resources-for-health-in-ecuador-s-new-model-of-care
#6
Verónica Espinosa, Daniel de la Torre, Cecilia Acuña, Cristina Cadena
Objective: Describe strategies implemented by Ecuador's Ministry of Public Health (MPH) to strengthen human resources for health leadership and respond to the new model of care, as a part of the reform process in the period 2012-2015. Methods: A documentary review was carried out of primary and secondary sources on development of human resources for health before and after the reform. Results: In the study period, Ecuador developed a new institutional and regulatory framework for developing human resources for health to respond to the requirements of a model of care based on primary health care...
June 8, 2017: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/28599833/the-effects-of-methylphenidate-on-the-neural-signatures-of-sustained-attention
#7
Paul M Dockree, Jessica J Barnes, Natasha Matthews, Angela J Dean, Rafael Abe, L Sanjay Nandam, Simon P Kelly, Mark A Bellgrove, Redmond G O'Connell
BACKGROUND: Although it is well established that methylphenidate (MPH) enhances sustained attention, the neural mechanisms underpinning this improvement remain unclear. We examined how MPH influenced known electrophysiological precursors of lapsing attention over different time scales. METHODS: We measured the impact of MPH, compared with placebo, on behavioral and electrocortical markers while healthy adults (n = 40) performed a continuous monitoring paradigm designed to elicit attentional lapses...
May 10, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28590363/ethanol-interactions-with-dexmethylphenidate-and-dl-methylphenidate-spheroidal-oral-drug-absorption-systems-in-healthy-volunteers
#8
Hao-Jie Zhu, Kennerly S Patrick, Arthur B Straughn, Owen T Reeves, Hilary Bernstein, Jian Shi, Heather J Johnson, Joshua M Knight, Aaron T Smith, Robert J Malcolm, John S Markowitz
BACKGROUND/PURPOSE: Ethanol coadministered with immediate-release dl-methylphenidate (dl-MPH) or dexmethylphenidate (d-MPH) significantly increases the geomean maximum plasma concentration (Cmax) of d-MPH 22% and 15%, respectively, and elevates overall drug exposure and psychostimulant effects. We asked the question: Are these ethanol-MPH interactions based more fundamentally on (1) inhibition of postabsorption d-MPH metabolism or (2) acceleration of MPH formulation gastric dissolution by ethanol in the stomach? This was investigated using the pulsatile, distinctly biphasic, spheroidal oral drug absorption systems of dl-MPH and d-MPH...
June 5, 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28583506/intergenerational-preferences-for-radio-loudness-during-automobile-driving
#9
Frederick Howard Bateman Hanser, Eric Adjei Boakye, Anthony Alan Mikulec
INTRODUCTION: The comparative contribution to human noise exposure from the vehicular radio is unknown, as are the radio volume preferences of different generations when driving an automobile. MATERIALS AND METHODS: A single vehicle was used to measure radio listening level in decibels of three generations (age 16-17 years, age 32-50 years, and age 51-73 years) in various conditions, ranging from engine off with windows closed to 60 miles per hour (mph) with windows open...
July 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28575064/antimicrobial-resistance-of-klebsiella-pneumoniae-stool-isolates-circulating-in-kenya
#10
Chris Rowe Taitt, Tomasz A Leski, Daniel P Erwin, Elizabeth A Odundo, Nancy C Kipkemoi, Janet N Ndonye, Ronald K Kirera, Abigael N Ombogo, Judd L Walson, Patricia B Pavlinac, Christine Hulseberg, Gary J Vora
We sought to determine the genetic and phenotypic antimicrobial resistance (AMR) profiles of commensal Klebsiella spp. circulating in Kenya by testing human stool isolates of 87 K. pneumoniae and three K. oxytoca collected at eight locations. Over one-third of the isolates were resistant to ≥3 categories of antimicrobials and were considered multidrug-resistant (MDR). We then compared the resistance phenotype to the presence/absence of 238 AMR genes determined by a broad-spectrum microarray and PCR. Forty-six genes/gene families were identified conferring resistance to β-lactams (ampC/blaDHA, blaCMY/LAT, blaLEN-1, blaOKP-A/OKP-B1, blaOXA-1-like family, blaOXY-1, blaSHV, blaTEM, blaCTX-M-1 and blaCTX-M-2 families), aminoglycosides (aac(3)-III, aac(6)-Ib, aad(A1/A2), aad(A4), aph(AI), aph3/str(A), aph6/str(B), and rmtB), macrolides (mac(A), mac(B), mph(A)/mph(K)), tetracyclines (tet(A), tet(B), tet(D), tet(G)), ansamycins (arr), phenicols (catA1/cat4, floR, cmlA, cmr), fluoroquinolones (qnrS), quaternary amines (qacEΔ1), streptothricin (sat2), sulfonamides (sul1, sul2, sul3), and diaminopyrimidines (dfrA1, dfrA5, dfrA7, dfrA8, dfrA12, dfrA13/21/22/23 family, dfrA14, dfrA15, dfrA16, dfrA17)...
2017: PloS One
https://www.readbyqxmd.com/read/28574725/the-diversity-of-challenges-in-the-control-of-measles-outbreaks
#11
Jeffrey D Gunzenhauser, Franklin D Pratt
From the Field is a semi-regular column that explores what it means to be a local health professional on the front lines of an emergency. National Association of County and City Health Officials (NACCHO) members share their stories of preparing for and responding to disasters, epidemics, and other major health issues. Through exploring the analysis of the challenges faced and the solutions developed, readers can learn how these public health champions keep their communities safe even in extreme situations. Readers may submit topics of interest to the column's editor, Meghan McGinty, PhD, MPH, MBA, at mmcginty@naccho...
May 2017: Health Security
https://www.readbyqxmd.com/read/28572774/an-under-the-table-leg-movement-apparatus-and-changes-in-energy-expenditure
#12
Gabriel A Koepp, Graham Moore, James A Levine
Introduction: Deskwork contributes substantially to sedentariness. Here, we evaluated an under-the-table apparatus that was designed to promote leg movement (fidgeting) while seated. Our hypothesis was that the under-the-table apparatus would increase energy expenditure. Methods: We measured energy expenditure and heart rate in 26 people while they sat and worked using a standard chair, walked on a treadmill, and sat and worked using an under-the-desk apparatus that encouraged leg movement. Results: Energy expenditure increased significantly while using the under-the-table apparatus when compared to the standard office chair (standard chair, 81 ± 18 kcal/h; under-the-table apparatus, 96 ± 23 kcal/h) (P < 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28560804/wnt-is-necessary-for-mesenchymal-to-epithelial-transition-in-colorectal-cancer-cells
#13
Renate H M Schwab, Nancy Amin, Dustin J Flanagan, Timothy M Johanson, Toby J Phesse, Elizabeth Vincan
BACKGROUND: Metastasis underlies most colorectal cancer mortality. Cancer cells spread through the body as single cells or small clusters of cells that have an invasive, mesenchymal, non-proliferative phenotype. At the secondary site, they revert to a proliferative 'tumor constructing' epithelial phenotype to rebuild a tumor. We previously developed a unique in vitro 3D model, called LIM1863-Mph, which faithfully recapitulates these reversible transitions that underpin colorectal cancer metastasis...
May 30, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28558473/theory-of-mind-and-empathy-in-children-with-adhd
#14
Hagai Maoz, Hila Z Gvirts, Maya Sheffer, Yuval Bloch
OBJECTIVE: The current study compared empathy and theory of mind (ToM) between children with ADHD and healthy controls, and assessed changes in ToM among children with ADHD following administration of methylphenidate (MPH). METHOD: Twenty-four children with ADHD (mean age = 10.3 years) were compared with 36 healthy controls. All children completed the interpersonal reactivity index (IRI), a self-reported empathy questionnaire, and performed the "faux-pas" recognition task (FPR)...
May 1, 2017: Journal of Attention Disorders
https://www.readbyqxmd.com/read/28557548/efficacy-and-safety-of-a-chewable-methylphenidate-extended-release-tablet-in-children-with-attention-deficit-hyperactivity-disorder
#15
Sharon B Wigal, Ann Childress, Sally A Berry, Heidi Belden, Faith Walters, Phillip Chappell, Nancy Sherman, John Orazem, Donna Palumbo
OBJECTIVE: This phase 3, laboratory classroom study assessed the efficacy and safety of methylphenidate hydrochloride extended-release chewable tablets (MPH ERCT) compared with placebo in children with attention-deficit/hyperactivity disorder (ADHD). METHODS: Following a 6-week, open-label, dose-optimization period, children 6-12 years of age (n = 90) with ADHD were randomly assigned to double-blind MPH ERCT at the final optimized dose (20-60 mg/day) or placebo...
May 30, 2017: Journal of Child and Adolescent Psychopharmacology
https://www.readbyqxmd.com/read/28552672/possible-involvement-of-creb-bdnf-signaling-pathway-in-neuroprotective-effects-of-topiramate-against-methylphenidate-induced-apoptosis-oxidative-stress-and-inflammation-in-isolated-hippocampus-of-rats-molecular-biochemical-and-histological-evidences
#16
Majid Motaghinejad, Manijeh Motevalian, Fatemeh Babalouei, Mohammad Abdollahi, Mansour Heidari, Zahra Madjd
Chronic abuse of methylphenidate (MPH) can cause serious neurotoxicity. The neuroprotective effects of topiramate (TPM) were approved, but its putative mechanism remains unclear. In current study the role of CREB/BDNF signaling pathway in TPM protection against methylphenidate-induced neurotoxicity in rat hippocampus was evaluated. 60 adult male rats were divided randomly into six groups. Groups received MPH (10mg/kg) only and concurrently with TPM (50mg/kg and 100mg/kg) and TPM (50 and 100mg/kg) only for 14 days...
May 24, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28544581/a-comparison-of-the-pharmacokinetics-of-methylphenidate-extended-release-orally-disintegrating-tablets-with-a-reference-extended-release-formulation-of-methylphenidate-in-healthy-adults
#17
Ann Childress, Jeffrey G Stark, Russ McMahen, Dorothy Engelking, Carolyn Sikes
Extended-release (ER) methylphenidate (MPH) is a first-line treatment for attention-deficit/hyperactivity disorder. A methylphenidate extended-release orally disintegrating tablet (MPH XR-ODT) has recently been developed. This was a randomized, open-label, 3-period, 3-treatment study comparing the bioavailability and absorption of 2 MPH XR-ODT formulations with an MPH ER reference medication. Here we report the 2 treatments comparing the commercial MPH XR-ODT formulation and reference medication. Following a ≥10-hour fast, 42 healthy adults received 60 mg of reference medication or MPH XR-ODT (2 × 30 mg)...
May 25, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28544344/fed-and-fasted-administration-of-a-novel-extended-release-methylphenidate-orally-disintegrating-tablet-formulation-for-the-treatment-of-adhd
#18
Richard H Weisler, Jeffrey G Stark, Carolyn Sikes
Extended-release methylphenidate is a first-line treatment for attention-deficit/hyperactivity disorder. A methylphenidate extended-release orally disintegrating tablet (MPH XR-ODT) has recently been developed. Here we report an open-label, randomized, 2-period, 2-treatment crossover study to determine the effect of food on the bioavailability of a single 60-mg dose of MPH XR-ODT in healthy adults. Blood samples were collected predose through 36 hours postdose. Maximum plasma concentration (Cmax ), time to maximum plasma concentration (Tmax ), terminal elimination half-life (T1/2 ), overall systemic exposure (AUClast and AUCinf ), and partial areas under the concentration curve (AUC0-3 , AUC3-7 , and AUC7-12 ) were calculated...
May 25, 2017: Clinical Pharmacology in Drug Development
https://www.readbyqxmd.com/read/28530097/total-particle-number-emissions-from-modern-diesel-natural-gas-and-hybrid-heavy-duty-vehicles-during-on-road-operation
#19
Tianyang Wang, David C Quiros, Arvind Thiruvengadam, Saroj Pradhan, Shaohua Hu, Tao Huai, Eon S Lee, Yifang Zhu
Particle emissions from heavy-duty vehicles (HDVs) have significant environmental and public health impacts. This study measured total particle number emission factors (PNEFs) from six newly certified HDVs powered by diesel and compressed natural gas totaling over 6800 miles of on-road operation in California. Distance-, fuel- and work-based PNEFs were calculated for each vehicle. Distance-based PNEFs of vehicles equipped with original equipment manufacturer (OEM) diesel particulate filters (DPFs) in this study have decreased by 355-3200 times compared to a previous retrofit DPF dynamometer study...
June 2, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28525569/comparative-effects-of-methylphenidate-modafinil-and-mdma-on-response-inhibition-neural-networks-in-healthy-subjects
#20
André Schmidt, Felix Müller, Patrick C Dolder, Yasmin Schmid, Davide Zanchi, Matthias E Liechti, Stefan Borgwardt
Background: Psychostimulants such as methylphenidate (MPH) and modafinil are increasingly used by healthy people for cognitive enhancement purposes, whereas the acute effect of 3,4-methylenedioxymethamphetamine (MDMA, ecstasy) on cognitive functioning in healthy subjects remains unclear. This study directly compared the acute effects of MPH, modafinil and MDMA on the neural mechanisms underlying response inhibition in healthy subjects. Methods: Using a double-blind within-subject placebo-controlled cross-over design, MPH, modafinil and MDMA were administrated to 21 healthy subjects, while performing a Go/No-Go event-related functional magnetic resonance imaging task to assess brain activation during motor response inhibition...
May 19, 2017: International Journal of Neuropsychopharmacology
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