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https://www.readbyqxmd.com/read/27917338/six-different-extremely-calcified-lesions-of-the-brain-brain-stones
#1
Yurdal Gezercan, Vedat Acik, Gökhan Çavuş, Ali Ihsan Ökten, Emre Bilgin, Hakan Millet, Burak Olmaz
BACKGROUND: This study aimed to extend clinical documentation of cerebral calculi by reporting six cases of cerebral calculi with distinct etiologies and localizations. METHODS: We evaluated the age, sex distribution, presenting symptoms, neurological examination findings, pathology results, and location of the calcifications of six patients with intracranial calcifications. RESULTS: Three of the six patients with brain stones were female (50%), and three were male (50%)...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27905942/a-novel-method-for-estimating-distributions-of-body-mass-index
#2
Marie Ng, Patrick Liu, Blake Thomson, Christopher J L Murray
BACKGROUND: Understanding trends in the distribution of body mass index (BMI) is a critical aspect of monitoring the global overweight and obesity epidemic. Conventional population health metrics often only focus on estimating and reporting the mean BMI and the prevalence of overweight and obesity, which do not fully characterize the distribution of BMI. In this study, we propose a novel method which allows for the estimation of the entire distribution. METHODS: The proposed method utilizes the optimization algorithm, L-BFGS-B, to derive the distribution of BMI from three commonly available population health statistics: mean BMI, prevalence of overweight, and prevalence of obesity...
March 12, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27902687/limb-bone-structural-proportions-and-locomotor-behavior-in-a-l-288-1-lucy
#3
Christopher B Ruff, M Loring Burgess, Richard A Ketcham, John Kappelman
While there is broad agreement that early hominins practiced some form of terrestrial bipedality, there is also evidence that arboreal behavior remained a part of the locomotor repertoire in some taxa, and that bipedal locomotion may not have been identical to that of modern humans. It has been difficult to evaluate such evidence, however, because of the possibility that early hominins retained primitive traits (such as relatively long upper limbs) of little contemporaneous adaptive significance. Here we examine bone structural properties of the femur and humerus in the Australopithecus afarensis A...
2016: PloS One
https://www.readbyqxmd.com/read/27884846/real-world-evidence-studies-into-treatment-adherence-thresholds-for-intervention-and-disparities-in-treatment-in-people-with-type-2-diabetes-in-the-uk
#4
Andrew McGovern, William Hinton, Ana Correa, Neil Munro, Martin Whyte, Simon de Lusignan
PURPOSE: The University of Surrey-Lilly Real World Evidence (RWE) diabetes cohort has been established to provide insights into the management of type 2 diabetes mellitus (T2DM). There are 3 areas of study due to be conducted to provide insights into T2DM management: exploration of medication adherence, thresholds for changing diabetes therapies, and ethnicity-related or socioeconomic-related disparities in management. This paper describes the identification of a cohort of people with T2DM which will be used for these analyses, through a case finding algorithm, and describes the characteristics of the identified cohort...
November 24, 2016: BMJ Open
https://www.readbyqxmd.com/read/27881864/mass-spectrometry-imaging-a-novel-technology-in-rheumatology
#5
REVIEW
Beatriz Rocha, Cristina Ruiz-Romero, Francisco J Blanco
Mass spectrometry imaging (MSI) is used to determine the relative abundance and spatial distribution of biomolecules such as peptides, proteins, lipids and other organic compounds in tissue sections by their molecular masses. This technique provides a sensitive and label-free approach for high-resolution imaging, and is currently used in an increasing number of biomedical applications such as biomarker discovery, tissue classification and drug monitoring. Owing to technological advances in the past 5 years in diverse MSI strategies, this technology is expected to become a standard tool in clinical practice and provides information complementary to that obtained using existing methods...
November 24, 2016: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/27873003/localization-of-ergot-alkaloids-in-sclerotia-of-claviceps-purpurea-by-matrix-assisted-laser-desorption-ionization-mass-spectrometry-imaging
#6
Julian Dopstadt, Simeon Vens-Cappell, Lisa Neubauer, Paul Tudzynski, Benedikt Cramer, Klaus Dreisewerd, Hans-Ulrich Humpf
The fungus Claviceps purpurea produces highly toxic ergot alkaloids and accumulates these in the hardened bodies of fungal mycelium. These so-called sclerotia, or ergot bodies, replace the crop seed of infected plants, which can include numerous important food- and feedstuff such as rye and wheat. While several studies have explored details of the infection process and development of ergot bodies, little information is available on the spatial distribution of the mycotoxins in the sclerotia. Here we used matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) at a lateral resolution of 35 μm to visualize the distribution of two representative alkaloids, ergocristine and ergometrine, produced by Ecc93 and Gal 310 variants of C...
November 21, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27860448/applicability-of-ultra-high-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry-for-cocaine-profiling
#7
Cuimei Liu, Zhendong Hua, Xin Meng
For the first time in China, the chemical profiling of cocaine specimens was performed at the National Narcotics Laboratory. An ultra-high performance liquid chromatography-quadrupole-time of flight mass spectrometry (UHPLC-QTOF-MS) method was developed and validated for simultaneous analysis of 14 cocaine alkaloids and 5 main adulterants. Among them, ecgonine methyl ester, ecgonine, benzoylecgonine, and norcocaine were identified by comparing with the standard materials; tropacocaine, 3,4,5-trimethoxycocaine, cis and trans cinnamoylcocaine were tentatively identified based on the exact masses of protonated molecules and product ions; six unidentified alkaloids of 182/1...
November 8, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/27860396/distributed-retrieval-practice-promotes-superior-recall-of-anatomy-information
#8
John L Dobson, Jose Perez, Tracy Linderholm
Effortful retrieval produces greater long-term recall of information when compared to studying (i.e., reading), as do learning sessions that are distributed (i.e., spaced apart) when compared to those that are massed together. Although the retrieval and distributed practice effects are well-established in the cognitive science literature, no studies have examined their additive effect with regard to learning anatomy information. The aim of this study was to determine how the benefits of retrieval practice vary with massed versus distributed learning...
November 16, 2016: Anatomical Sciences Education
https://www.readbyqxmd.com/read/27828939/determinants-of-body-composition-in-breastfed-infants-using-bioimpedance-spectroscopy-and-ultrasound-skinfolds-methods-comparison
#9
Zoya Gridneva, Anna R Hepworth, Leigh C Ward, Ching T Lai, Peter E Hartmann, Donna T Geddes
BACKGROUND: Accurate, non-invasive and inexpensive methods are required to measure infant body composition. Ultrasound and bioimpedance spectroscopy (BIS) have been validated in adults and introduced in pediatric populations. The aim of this study was to evaluate the performance of both methods in determining percentage fat mass (%FM) in breastfed infants. METHODS: %FM of 2, 5, 9 and 12 month-old healthy, breastfed term infants (n = 58) was calculated using BIS-derived total body water equations and skinfold equations and compared to reference models...
November 9, 2016: Pediatric Research
https://www.readbyqxmd.com/read/27822030/management-of-copd-equal-treatment-across-age-gender-and-social-situation-a-register-study
#10
Ingela Henoch, Susann Strang, Claes-Göran Löfdahl, Ann Ekberg-Jansson
Chronic obstructive pulmonary disease (COPD) is a progressive chronic disease where treatment decisions should be based on disease severity and also should be equally distributed across age, gender, and social situation. The aim of this study was to determine to what extent patients with COPD are offered evidence-based interventions and how the interventions are distributed across demographic and clinical factors in the sample. Baseline registrations of demographic, disease-related, and management-related variables of 7,810 patients in the Swedish National Airway Register are presented...
2016: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/27819513/can-assessment-of-disease-burden-prior-to-changes-in-initial-copd-maintenance-treatment-provide-insight-into-remaining-unmet-needs-a-retrospective-database-study-in-uk-primary-care
#11
Sarah H Landis, Keele Wurst, Hoa Van Le, Kerina Bonar, Yogesh S Punekar
This retrospective cohort study aimed to assess treatment patterns over 24 months amongst patients with chronic obstructive pulmonary disease (COPD), initiating a new COPD maintenance treatment, and to understand clinical indicators of treatment change. Patients included in the study initiated a long-acting β2-agonist (LABA), a long-acting muscarinic antagonist (LAMA), or a combination of LABA and an inhaled corticosteroid (ICS/LABA) between January 1, 2009, and November 30, 2013, as recorded in the United Kingdom Clinical Practice Research Datalink (UK CPRD)...
November 7, 2016: COPD
https://www.readbyqxmd.com/read/27806975/reference-ranges-for-midupper-arm-circumference-upper-arm-muscle-area-and-upper-arm-fat-area-in-us-children-and-adolescents-aged-1-20-y
#12
O Yaw Addo, John H Himes, Babette S Zemel
BACKGROUND: Midupper arm circumference (MUAC) has long been used in anthropometric assessments of nutritional status in field settings, especially in emergency situations, but percentile ranges for healthy, well-nourished children are currently unavailable. OBJECTIVE: We developed reference curves for MUAC and derived measures of arm muscle area (AMA) and arm fat area (AFA) on the basis of the population used in the current CDC body mass index growth charts. DESIGN: We analyzed cross-sectional MUAC and triceps (triceps skinfold thickness) data from 32,952 US children aged 1-20 y...
November 2, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27793579/inter-reader-variability-in-the-use-of-bi-rads-descriptors-for-suspicious-findings-on-diagnostic-mammography-a-multi-institution-study-of-10-academic-radiologists
#13
Amie Y Lee, Dorota J Wisner, Shadi Aminololama-Shakeri, Vignesh A Arasu, Stephen A Feig, Jonathan Hargreaves, Haydee Ojeda-Fournier, Lawrence W Bassett, Colin J Wells, Jade De Guzman, Chris I Flowers, Joan E Campbell, Sarah L Elson, Hanna Retallack, Bonnie N Joe
RATIONALE AND OBJECTIVES: The study aimed to determine the inter-observer agreement among academic breast radiologists when using the Breast Imaging Reporting and Data System (BI-RADS) lesion descriptors for suspicious findings on diagnostic mammography. MATERIALS AND METHODS: Ten experienced academic breast radiologists across five medical centers independently reviewed 250 de-identified diagnostic mammographic cases that were previously assessed as BI-RADS 4 or 5 with subsequent pathologic diagnosis by percutaneous or surgical biopsy...
October 25, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27791282/differentiating-tumor-heterogeneity-in-ffpe-prostate-adenocarcinoma-tissues-using-pca-analysis-of-maldi-ims-spectral-data
#14
Irene Panderi, Evgeny Yakirevich, Silvana Papagerakis, Lelia Noble, Kara Lombardo, Dionysios Pantazatos
RATIONALE: Many patients with adenocarcinoma of the prostate present with advanced and metastatic cancer at the time of diagnosis. There is an urgent need to detect biomarkers that will improve the diagnosis and prognosis of this disease. MALDI imaging mass spectrometry (MALDI-IMS) is playing a key role in cancer research and it can be useful to unravel the molecular profile of prostate cancer biopsies. METHODS: MALDI imaging data sets are highly complex and their interpretation requires the use of multivariate statistical methods...
October 28, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27770788/bioelectrical-impedance-analysis-bia-of-the-association-of-the-japanese-kampo-concept-suidoku-fluid-disturbance-and-the-body-composition-of-women
#15
Aya Murakami, Daisuke Kobayashi, Toshio Kubota, Niina Zukeyama, Haru Mukae, Norihiro Furusyo, Mosaburo Kainuma, Takao Shimazoe
BACKGROUND: In Japanese Kampo medical practice, suidoku (fluid disturbance) is one of the most important concepts for selecting the proper medication. Suidoku is an excessive or uneven distribution of fluid that is indicated by splashing sounds and pitting edema. However, few objective reports about suidoku have been published. Bioelectrical impedance analysis (BIA) uses resistance values obtained from weak electrical currents to estimate body composition, including intracellular and extracellular water and muscle and fat mass...
October 22, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27709237/visual-impairment-screening-at-the-geriatric-frailty-clinic-for-assessment-of-frailty-and-prevention-of-disability-at-the-g%C3%A3-rontop%C3%A3-le
#16
V Soler, S Sourdet, L Balardy, G Abellan van Kan, D Brechemier, M E Rougé-Bugat, N Tavassoli, M Cassagne, F Malecaze, F Nourhashémi, B Vellas
OBJECTIVES: To evaluate visual performance and factors associated with abnormal vision in patients screened for frailty at the Geriatric Frailty Clinic (GFC) for Assessment of Frailty and Prevention of Disability at Toulouse University Hospital. DESIGN: Retrospective, observational cross-sectional, single-centre study. SETTING: Institutional practice. PARTICIPANTS: Patients were screened for frailty during a single-day hospital stay between October 2011 and October 2014 (n = 1648)...
2016: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/27706162/controlling-neglected-tropical-diseases-ntds-in-haiti-implementation-strategies-and-evidence-of-their-success
#17
Jean Frantz Lemoine, Anne Marie Desormeaux, Franck Monestime, Carl Renad Fayette, Luccene Desir, Abdel Nasser Direny, Sarah Carciunoiu, Lior Miller, Alaine Knipes, Patrick Lammie, Penelope Smith, Melissa Stockton, Lily Trofimovich, Kalpana Bhandari, Richard Reithinger, Kathryn Crowley, Eric Ottesen, Margaret Baker
Lymphatic filariasis (LF) and soil-transmitted helminths (STH) have been targeted since 2000 in Haiti, with a strong mass drug administration (MDA) program led by the Ministry of Public Health and Population and its collaborating international partners. By 2012, Haiti's neglected tropical disease (NTD) program had reached full national scale, and with such consistently good epidemiological coverage that it is now able to stop treatment for LF throughout almost all of the country. Essential to this success have been in the detail of how MDAs were implemented...
October 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27685348/determining-the-learning-curve-for-acquiring-core-sonographic-skills-for-ultrasound-guided-axillary-brachial-plexus-block
#18
Michael J Barrington, Laura P Viero, Roman Kluger, Alexander L Clarke, Jason J Ivanusic, Daniel M Wong
BACKGROUND AND OBJECTIVES: The objectives of this study were to determine the learning curve for capturing sonograms and identifying anatomical structures relevant to ultrasound-guided axillary brachial plexus block and to determine if massed was superior to distributed practice for this core sonographic skill. METHODS: Ten University of Melbourne, third- or fourth-year Doctor of Medicine students were randomized to massed or distributed practice. Participants performed 15 supervised learning sessions comprising scanning followed by feedback...
September 28, 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27673755/evaluation-of-pancreatic-vmat2-binding-with-active-and-inactive-enantiomers-of-18-f-fp-dtbz-in-baboons
#19
Mika Naganawa, Shu-Fei Lin, Keunpoong Lim, David Labaree, Jim Ropchan, Paul Harris, Yiyun Huang, Masanori Ichise, Richard E Carson, Gary W Cline
INTRODUCTION: (18)F-Fluoropropyl-(+)-dihydrotetrabenazine ((18)F-FP-(+)-DTBZ) is a vesicular monoamine transporter type 2 (VMAT2) radiotracer for positron emission tomography (PET) imaging to quantify human β-cell mass. Renal cortex and spleen have been suggested as reference regions, however, little is known about (18)F-FP-(+)-DTBZ binding in these regions including the fraction of radiometabolite. We compared the kinetics of (18)F-FP-(+)-DTBZ and its inactive enantiomer (18)F-FP-(-)-DTBZ in baboons, estimated the non-displaceable binding (VND) of the tracers, and used ex vivo studies to measure radiometabolite fractions...
December 2016: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/27667882/normal-gamma-bernoulli-peak-detection-for-analysis-of-comprehensive-two-dimensional-gas-chromatography-mass-spectrometry-data
#20
Seongho Kim, Hyejeong Jang, Imhoi Koo, Joohyoung Lee, Xiang Zhang
Compared to other analytical platforms, comprehensive two-dimensional gas chromatography coupled with mass spectrometry (GC×GC-MS) has much increased separation power for analysis of complex samples and thus is increasingly used in metabolomics for biomarker discovery. However, accurate peak detection remains a bottleneck for wide applications of GC×GC-MS. Therefore, the normal-exponential-Bernoulli (NEB) model is generalized by gamma distribution and a new peak detection algorithm using the normal-gamma-Bernoulli (NGB) model is developed...
January 2017: Computational Statistics & Data Analysis
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