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Giuseppe Pastura, Tadeu Takao Almodovar Kubo, Maria Angélica Regalla, Cíntia Machado Mesquita, Gabriel Coutinho, Emerson Leandro Gasparetto, Otávio Figueiredo, Paulo Mattos, Alexandra Prüfer de Queiroz Campos Araújo
Objective: To perform a pilot study to investigate the association between working memory and cortical thickness in a sample of attention deficit/hyperactivity disorder (ADHD) children. Methods: Seventeen children aged 7-10 years diagnosed with ADHD and 16 healthy children underwent a magnetic resonance scan for cortical thickness measurements. Data was correlated with working memory performance using the Backwards Digit Span subtest of the Wechsler Intelligence Scale for Children...
October 2016: Arquivos de Neuro-psiquiatria
Mandeep S Tamber, Dimitrios Nikas, Alexandra Beier, Lissa C Baird, David F Bauer, Susan Durham, Paul Klimo, Alexander Y Lin, Catherine Mazzola, Catherine McClung-Smith, Laura Mitchell, Rachana Tyagi, Ann Marie Flannery
BACKGROUND: No evidence-based guidelines exist on the role of cranial-molding orthosis (helmet) therapy for patients with positional plagiocephaly. OBJECTIVE: To address the clinical question: "Does helmet therapy provide effective treatment for positional plagiocephaly?" and to make treatment recommendations based on the available evidence. METHODS: The US National Library of Medicine Medline database and the Cochrane Library were queried by using MeSH headings and key words relevant to the objective of this systematic review...
November 2016: Neurosurgery
Lissa C Baird, Paul Klimo, Ann Marie Flannery, David F Bauer, Alexandra Beier, Susan Durham, Alexander Y Lin, Catherine McClung-Smith, Laura Mitchell, Dimitrios Nikas, Mandeep S Tamber, Rachana Tyagi, Catherine Mazzola
BACKGROUND: Evidence-based guidelines are not currently available for the treatment of positional plagiocephaly and, in particular, for the use of physical therapy for treatment. OBJECTIVE: To answer the question: "does physical therapy provide effective treatment for positional plagiocephaly?" Treatment recommendations are created based on the available evidence. METHODS: The PubMed and the Cochrane Library were queried using MeSH headings and key words relevant to the objective of this systematic review...
November 2016: Neurosurgery
Paul Klimo, Patrick Ryan Lingo, Lissa C Baird, David F Bauer, Alexandra Beier, Susan Durham, Alexander Y Lin, Catherine McClung-Smith, Laura Mitchell, Dimitrios Nikas, Mandeep S Tamber, Rachana Tyagi, Catherine Mazzola, Ann Marie Flannery
BACKGROUND: Plagiocephaly, involving positional deformity of the calvarium in infants, is one of the most common reasons for pediatric neurosurgical consultation. OBJECTIVE: To answer the question: "what is the evidence for the effectiveness of repositioning for positional plagiocephaly?" Treatment recommendations are provided based on the available evidence. METHODS: The National Library of Medicine MEDLINE database and the Cochrane Library were queried using MeSH headings and key words relevant to repositioning as a means to treat plagiocephaly and brachycephaly...
November 2016: Neurosurgery
Catherine Mazzola, Lissa C Baird, David F Bauer, Alexandra Beier, Susan Durham, Paul Klimo, Alexander Y Lin, Catherine McClung-Smith, Laura Mitchell, Dimitrios Nikas, Mandeep S Tamber, Rachana Tyagi, Ann Marie Flannery
BACKGROUND: No evidence-based guidelines exist for the imaging of patients with positional plagiocephaly. OBJECTIVE: The objective of this systematic review and evidence-based guideline is to answer the question, Is imaging necessary for infants with positional plagiocephaly to make a diagnosis? METHODS: The National Library of Medicine Medline database and the Cochrane Library were queried with the use of MeSH headings and key words relevant to imaging as a means to diagnose plagiocephaly...
November 2016: Neurosurgery
Ann Marie Flannery, Mandeep S Tamber, Catherine Mazzola, Paul Klimo, Lissa C Baird, Rachana Tyagi, David F Bauer, Alexandra Beier, Susan Durham, Alexander Y Lin, Catherine McClung-Smith, Laura Mitchell, Dimitrios Nikas
BACKGROUND: Positional plagiocephaly is a common problem seen by pediatricians, pediatric neurologists, and pediatric neurosurgeons. OBJECTIVE: To create evidence-based guidelines for the treatment of pediatric positional plagiocephaly. METHODS: This guideline was prepared by the Plagiocephaly Guideline Task Force, a multidisciplinary team made up of physician volunteers (clinical experts), medical librarians, and clinical guidelines specialists...
November 2016: Neurosurgery
Thomas Young Ho Yoon, Richard A Michaud, Mitesh Patel, Alexandra M Manibo
OBJECTIVE: This study was conducted to evaluate variations in and the prevalence of the lingual concavity. MATERIALS & METHODS: This study used images taken between January 1st, 2011 and August 31st, 2015 from a total of 104 patient charts randomly selected from a private practice. These images were all acquired from a single cone beam computed tomography (CBCT) machine. The CBCT's were reviewed in cross sectional images of both the left and right anterior incisor and posterior molar regions...
October 19, 2016: Journal of Oral Implantology
Alexandra S Creighton, Tanya E Davison, David W Kissane
OBJECTIVE: To synthesize and summarize the studies examining the correlates and predictors of anxiety in older adults living in residential aged care. METHODS: Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, five electronic databases were searched using key terms and subject headings, as well as reference lists of relevant papers. The search was limited to peer-reviewed literature published in English. Eligible studies examined the association between at least one correlate/factor and anxiety disorders or symptoms in aged care residents aged 50+ years...
October 17, 2016: International Journal of Geriatric Psychiatry
Alexandra I Korda, Mariniki Koliaraki, Pantelis A Asvestas, George K Matsopoulos, Errikos M Ventouras, Periklis Y Ktonas, Nikolaos Smyrnis
The frequency of intrusive saccades during maintenance of active visual fixation has been used as a measure of sustained visual attention in studies of healthy subjects as well as of neuropsychiatric patient populations. In this study, the mechanism that generates intrusive saccades during active visual fixation was investigated in a population of young healthy men performing three sustained fixation tasks (fixation to a visual target, fixation to a visual target with visual distracters, and fixation straight ahead in the dark)...
October 14, 2016: Neuroscience
Sara Barbiero, Alexandra Rink, Fabrizio Matteucci, David Fedele, Fabiola Paiar, Francesco Pasqualetti, Michele Avanzo
PURPOSE: To report on single-fraction stereotactic body radiotherapy (RT) (SBRT) with flattening filter (FF)-free (FFF) volumetric modulated arc therapy (VMAT) for lung cancer and to compare dosimetric results with VMAT with FF. METHODS AND MATERIALS: Overall, 25 patients were treated with 6-MV FFF VMAT (Varian TrueBeam STx LINAC) to a prescribed dose of 24Gy in a single fraction. Treatment plans were recreated using FF VMAT. Dose-volume indices, monitor units (MU), and treatment times were compared between FFF and FF VMAT techniques...
October 14, 2016: Medical Dosimetry: Official Journal of the American Association of Medical Dosimetrists
Alexandra Kiskini, Anne Vissers, Jean-Paul Vincken, Harry Gruppen, Peter Alexander Wierenga
Effects of the developmental stage (e.g. young, mature or senescent) of leaves on their chemical composition have been described in literature. This study focuses on the variation in chemical composition and quantity and quality of proteins extracted from leaves due to variation in plant age (i.e. harvesting time), using leaves from sugar beets grown in field (Rhino, Arrival) and in greenhouse (Isabella). Within the same variety (Rhino-field, Arrival-field, Isabella-greenhouse) the protein content was similar for leaves from young and old plants (22±1, 16±1, and 10±3% w/w db, respectively)...
October 17, 2016: Journal of Agricultural and Food Chemistry
Clémentine Sarkozy, Sophie Kaltenbach, Pierre Faurie, Danielle Canioni, Françoise Berger, Alexandra Traverse-Glehen, Hervé Ghesquieres, Gilles Salles, Emmanuel Bachy, Marie-Alexandra Alyanakian, Olivier Hermine, Bénédicte Neven, Elizabeth Macintyre, Serge Romana, Thierry Jo Molina, Felipe Suarez, Vahid Asnafi, Julie Bruneau
Plasma-cell post-transplantation lymphoproliferative disorder (PC-PTLD) is a rare monomorphic PTLD entity divided into plasma cell myeloma (PCM) and plasmacytoma-like lesion (PLL) PTLD. To date, there are no exhaustive published cytogenetic data on PC-PTLD. We report array-based comparative genomic hybridization (aCGH) of 10 cases of PCM and PLL-PTLD. Patients had received kidney (n=6), heart (n=2), lung (n=1) or bone marrow (n=1) transplantation. There were six men and median age at time of PTLD was 56.5 years (3-74)...
October 17, 2016: Genes, Chromosomes & Cancer
Guillermo Blanco, Alexandra Junza, Dolores Barrón
Pharmaceuticals from veterinary treatments may enter terrestrial food webs when medicated livestock are available to wildlife in supplementary feeding stations aimed at the conservation of endangered scavengers. Here, we hypothesized that the exposure risk to livestock fluoroquinolones, as indicators of pharmaceutical burden in food, is related to the variable reliance of scavengers on domestic versus wild animal carcasses. Since the misuse of broad-spectrum antibiotics is a major predisposing factor for opportunistic mycoses, we evaluated disease signs potentially associated with diet-dependent drug exposure in nestlings of two threatened vultures...
October 14, 2016: Ecotoxicology and Environmental Safety
Andrey N Pravdivtsev, Alexey S Kiryutin, Alexandra V Yurkovskaya, Hans-Martin Vieth, Konstantin L Ivanov
We propose a robust and highly efficient NMR technique to create singlet spin order from longitudinal spin magnetization in coupled spin-½ pairs and to perform backward conversion (singlet order)→magnetization. In this method we exploit adiabatic ramping of an RF-field in order to drive transitions between the singlet state and the T± triplet states of a spin pair under study. We demonstrate that the method works perfectly for both strongly and weakly coupled spin pairs, providing a conversion efficiency between the singlet spin order and magnetization, which is equal to the theoretical maximum...
October 6, 2016: Journal of Magnetic Resonance
Joanna J Hoppins, David R Gruber, Heather L Miears, Alexey S Kiryutin, Rustem D Kasymov, Darya V Petrova, Anton V Endutkin, Alexander V Popov, Alexandra V Yurkovskaya, Stanislav O Fedechkin, Jacob A Brockerman, Dmitry O Zharkov, Serge L Smirnov
8-oxoguanine is one of the most abundant and impactful oxidative DNA lesions. However, the reasons underlying its effects, especially those not directly explained by the altered base pairing ability, are poorly understood. We report the effect of the lesion on the action of EcoRI, a widely used restriction endonuclease. Introduction of 8-oxoguanine inside, or adjacent to, the GAATTC recognition site embedded within the Drew-Dickerson dodecamer sequence notably reduced the EcoRI activity. Solution NMR revealed that 8-oxoguanine in the DNA duplex causes substantial alterations in the sugar-phosphate backbone conformation, inducing a BI→BII transition...
2016: PloS One
Xingqi Chen, Ying Shen, Will Draper, Jason D Buenrostro, Ulrike Litzenburger, Seung Woo Cho, Ansuman T Satpathy, Ava C Carter, Rajarshi P Ghosh, Alexandra East-Seletsky, Jennifer A Doudna, William J Greenleaf, Jan T Liphardt, Howard Y Chang
Spatial organization of the genome plays a central role in gene expression, DNA replication, and repair. But current epigenomic approaches largely map DNA regulatory elements outside of the native context of the nucleus. Here we report assay of transposase-accessible chromatin with visualization (ATAC-see), a transposase-mediated imaging technology that employs direct imaging of the accessible genome in situ, cell sorting, and deep sequencing to reveal the identity of the imaged elements. ATAC-see revealed the cell-type-specific spatial organization of the accessible genome and the coordinated process of neutrophil chromatin extrusion, termed NETosis...
October 17, 2016: Nature Methods
Rachel A Sheridan, Ann M Decker, Alexandra B Plonka, Hom-Lay Wang
PURPOSE: Occlusal overload may cause implant biomechanical failures, marginal bone loss, or even complete loss of osseointegration. Thus, it is important for clinicians to understand the role of occlusion in implant long-term stability. This systematic review updates the understanding of occlusion on dental implants, the impact on the surrounding peri-implant tissues, and the effects of occlusal overload on implants. Additionally, recommendations of occlusal scheme for implant prostheses and designs were formulated...
October 4, 2016: Implant Dentistry
Douglas MacKay, Alexandra Robinson
Governments must determine the legal procedures by which their residents are registered, or can register, as organ donors. Provided that governments recognize that people have a right to determine what happens to their organs after they die, there are four feasible options to choose from: opt-in, opt-out, mandated active choice, and voluntary active choice. We investigate the ethics of these policies' use of nudges to affect organ donor registration rates. We argue that the use of nudges in this context is morally problematic...
November 2016: American Journal of Bioethics: AJOB
David B Hanna, Molly Jung, Xiaonan Xue, Kathryn Anastos, Jennifer M Cocohoba, Mardge H Cohen, Elizabeth T Golub, Nancy A Hessol, Alexandra M Levine, Tracey E Wilson, Mary A Young, Robert C Kaplan
Cardiovascular disease (CVD) is increasingly common among women with HIV, but literature on nonlipid CVD risk factor management is lacking. We examined semiannual trends from 2006 to 2014 in hypertension treatment and control (blood pressure <140/90 mmHg), diabetes treatment and control (fasting glucose <130 mg/dL), and smoking quit rates in the Women's Interagency HIV Study. Unadjusted and adjusted Poisson regression models tested time trends and differences between HIV+ and HIV- women. Among antiretroviral therapy (ART) users, we examined the association of ART adherence and virologic suppression with each outcome...
October 2016: AIDS Patient Care and STDs
Alexandra Ioana Lupulescu, Wei Qin, Jeffrey D Rimer
Nonclassical mechanisms of crystal growth often involve the formation of amorphous precursors that play a direct role in what is generally referred to as crystallization by particle attachment (or CPA). One of the most studied CPA systems in literature is zeolite MFI, which is a microporous crystal with siliceous (silicalite-1) and aluminosilicate (ZSM-5) isostructures. The self-assembly, microstructural evolution, and mechanistic role of nanoparticle precursors (1 - 6 nm) during silicalite-1 crystallization have been the subjects of prior investigation by combined experimental and modeling techniques...
October 17, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
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