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https://www.readbyqxmd.com/read/29352568/dual-energy-computed-tomography-should-be-a-first-line-preoperative-localization-imaging-test-for-primary-hyperparathyroidism-patients
#1
Jake Hiebert, Cameron Hague, Shangmei Hou, Sam M Wiseman
BACKGROUND: The objective of this study was to evaluate the performance of dual-energy computed tomography (DECT) for preoperative parathyroid tumor (PT) localization in primary hyperparathyroid (PHP) patients. METHODS: A retrospective review was carried out of the medical records of all PHP patients who underwent ultrasound (US), Tc-99m sestamibi noncontrast single photon emission computed tomography (CT-MIBI), DECT and parathyroidectomy at a single center. RESULTS: The sensitivities and accuracies for preoperative PT localization in the 97 patient study population were: US 40% and 93%, CT-MIBI 64...
January 5, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29352070/review-of-extraocular-muscle-biopsies-and-utility-of-biopsy-in-extraocular-muscle-enlargement
#2
Edwina L Eade, Thomas G Hardy, Penelope A McKelvie, Alan A McNab
AIMS: To review the distribution of pathology in extraocular muscle (EOM) biopsies performed at a tertiary orbital centre, identify clinical and imaging features which are associated with benign or malignant diseases and indicate when biopsy is necessary for EOM enlargement. METHODS: Retrospective case series including 93 patients with EOM enlargement who underwent an EOM biopsy. Clinical, radiological and histopathological information was recorded from the medical records...
January 19, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29352067/sandwich-cultured-hepatocytes-for-mechanistic-understanding-of-hepatic-disposition-of-parent-drugs-and-metabolites-by-transporter-enzyme-interplay
#3
Norikazu Matsunaga, Yukina Fukuchi, Haruo Imawaka, Ikumi Tamai
Functional interplay between transporters and drug-metabolizing enzymes is currently one of the hottest topics in the field of drug metabolism and pharmacokinetics. Uptake transporter-enzyme interplay is important to determine intrinsic hepatic clearance based on the extended clearance concept. Enzyme-efflux transporter interplay, which includes both sinusoidal (basolateral) and canalicular efflux transporters, determines the fate of metabolites formed in the liver. As sandwich-cultured hepatocytes (SCHs) maintain metabolic activities and form a canalicular network, the whole interplay between uptake/efflux transporters and drug-metabolizing enzymes can be investigated simultaneously...
January 19, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/29352006/machine-learning-in-cardiovascular-medicine-are-we-there-yet
#4
REVIEW
Khader Shameer, Kipp W Johnson, Benjamin S Glicksberg, Joel T Dudley, Partho P Sengupta
Artificial intelligence (AI) broadly refers to analytical algorithms that iteratively learn from data, allowing computers to find hidden insights without being explicitly programmed where to look. These include a family of operations encompassing several terms like machine learning, cognitive learning, deep learning and reinforcement learning-based methods that can be used to integrate and interpret complex biomedical and healthcare data in scenarios where traditional statistical methods may not be able to perform...
January 19, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29351905/cancer-treatment-in-childhood-and-testicular-function-the-role-of-the-somatic-environment
#5
Jan-Bernd Stukenborg, Kirsi Jahnukainen, Marsida Hutka, Rod T Mitchell
Testicular function and future fertility may be affected by cancer treatment during childhood. Whilst survival of the germ (stem) cells is critical for ensuring the potential for fertility in these patients, the somatic cell populations also play a crucial role in providing a suitable environment to support germ cell maintenance and subsequent development. Regulation of the spermatogonial stem cell niche involves many signaling pathways with hormonal influence from the hypothalamo-pituitary-gonadal axis. In this review, we describe the somatic cell populations that comprise the testicular germ stem cell niche in human and how they may be affected by cancer treatment during childhood...
January 19, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29351890/evolutionary-mechanisms-studied-through-protein-fitness-landscapes
#6
REVIEW
Aneth S Canale, Pamela A Cote-Hammarlof, Julia M Flynn, Daniel Na Bolon
Biology has, and continues to be, shaped by evolutionary mechanisms. Within the past decade, local fitness landscapes have become experimentally tractable and are providing new perspectives on evolutionary mechanisms. Powered by next-generation sequencing, the impacts of all individual amino acid substitutions on function have been quantified for dozens of proteins. These fitness maps have been utilized to investigate the biophysical underpinnings of existing protein function as well as the appearance and enhancement of new protein functions...
January 16, 2018: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/29351826/nonadherence-to-cpap-associated-with-increased-30-day-hospital-readmissions
#7
Kimberly K Truong, Rossi De Jardin, Nahal Massoudi, Mehrtash Hashemzadeh, Behrouz Jafari
STUDY OBJECTIVES: The primary objective of this study was to determine if nonadherence to continuous positive airway pressure (CPAP) is associated with increased 30-day all-cause, cardiovascular-cause, and pulmonary-cause hospital readmissions. METHODS: Retrospective cohort study at a Veterans Affairs hospital of patients with obstructive sleep apnea (OSA) who were hospitalized from January 1, 2007 to December 31, 2015. Odds ratio of 30-day readmission was calculated for all-cause, cardiovascular-cause, and pulmonary-cause readmissions...
January 16, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29351437/metabolic-reprogramming-in-the-pathogenesis-of-chronic-lung-diseases-including-bpd-copd-and-pulmonary-fibrosis
#8
Haifeng Zhao, Phyllis A Dennery, Hongwei Yao
The metabolism of nutrient substrates including glucose, glutamine and fatty acids provides acetyl-CoA for the tricarboxylic acid cycle to generate energy, and metabolites for the biosynthesis of biomolecules including nucleotides, proteins, and lipids. It has been shown that metabolism of glucose, fatty acid, and glutamine plays important roles in modulating cellular proliferation, differentiation, apoptosis, autophagy, senescence, and inflammatory responses. All these cellular processes contribute to the pathogenesis of chronic lung diseases, including bronchopulmonary dysplasia, chronic obstructive pulmonary disease, and pulmonary fibrosis...
January 4, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351243/awake-versus-asleep-deep-brain-stimulation-surgery-technical-considerations-and-critical-review-of-the-literature
#9
REVIEW
Ryan B Kochanski, Sepehr Sani
Advancements in neuroimaging have led to a trend toward direct, image-based targeting under general anesthesia without the use of microelectrode recording (MER) or intraoperative test stimulation, also referred to as "asleep" deep brain stimulation (DBS) surgery. Asleep DBS, utilizing imaging in the form of intraoperative computed tomography (iCT) or magnetic resonance imaging (iMRI), has demonstrated reliable targeting accuracy of DBS leads implanted within the globus pallidus and subthalamic nucleus while also improving clinical outcomes in patients with Parkinson's disease...
January 19, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29351106/the-role-of-patient-registries-for-rare-genetic-lipid-disorders
#10
David M Ng, Amanda J Hooper, Matthew I Bellgard, John R Burnett
PURPOSE OF REVIEW: We review the role, utility and current status of patient registries for rare genetic lipid disorders. RECENT FINDINGS: The creation and maintenance of rare genetic lipid disorder patient registries is critical for disease monitoring, improving clinical best practice, facilitating research and enabling the development of novel therapeutics. An open-source disease registry platform, termed the Rare Disease Registry Framework, has been developed, optimized and deployed for homozygous familial hypercholesterolemia...
January 17, 2018: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/29351053/patient-variability-seldom-assessed-in-cost-effectiveness-studies
#11
Tara A Lavelle, David M Kent, Christine M Lundquist, Teja Thorat, Joshua T Cohen, John B Wong, Natalia Olchanski, Peter J Neumann
BACKGROUND: Cost-effectiveness analysis (CEA) estimates can vary substantially across patient subgroups when patient characteristics influence preferences, outcome risks, treatment effectiveness, life expectancy, or associated costs. However, no systematic review has reported the frequency of subgroup analysis in CEA, what type of heterogeneity they address, and how often heterogeneity influences whether cost-effectiveness ratios exceed or fall below conventional thresholds. METHODS: We reviewed the CEA literature cataloged in the Tufts Medical Center CEA Registry, a repository describing cost-utility analyses published through 2016...
January 1, 2018: Medical Decision Making: An International Journal of the Society for Medical Decision Making
https://www.readbyqxmd.com/read/29350873/test-procedures-to-assess-somatosensory-abnormalities-in-individuals-with-peripheral-joint-pain-a-systematic-review-of-psychometric-properties
#12
REVIEW
Abdullah Alqarni, Donald Manlapaz, David Baxter, Steve Tumilty, Ramakrishnan Mani
BACKGROUND: Test procedures that were developed to assess somatosensory abnormalities should possess optimal psychometric properties (PMPs) to be used in clinical practice. The aim of this systematic review is to evaluate the literature to assess the level of evidence for PMPs of test procedures investigated in individuals with peripheral joint pain (PJP). METHODS: A comprehensive electronic literature search was conducted in seven databases from inception to March 2016...
January 19, 2018: Pain Practice: the Official Journal of World Institute of Pain
https://www.readbyqxmd.com/read/29350638/weight-bearing-mri-of-the-knee-a-review-of-advantages-and-limits
#13
Federico Bruno, Antonio Barile, Francesco Arrigoni, Antonella Laporta, Anna Russo, Marina Carotti, Alessandra Splendiani, Ernesto Di Cesare, Carlo Masciocchi
Standard knee imaging with MRI is usually performed with patient in recumbent position under non-weight-bearing conditions. Recently, magnetic resonance imaging systems to scan the knee joint under weight bearing conditions has been proposed as an approach to improve the clinical utility of musculoskeletal MRI. Imaging under loading can be useful to understand the natural motion behavior of the knee joint and to identify conditions that are challenging to diagnose by using standard position. We reviewed the literature on weight-bearing MR imaging of the knee to describe the current state of use of such MRI technologies, evaluating the advantages and the potential limitations of these technologies...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350637/clinical-utility-of-eco-color-power-doppler-ultrasonography-and-contrast-enhanced-magnetic-resonance-imaging-for-interpretation-and-quantification-of-joint-synovitis-a-review
#14
Marina Carotti, Vittoria Galeazzi, Francesca Catucci, Marcello Zappia, Francesco Arrigoni, Antonio Barile, Andrea Giovagnoni
With the introduction of new biologics such as anti-TNF-alpha antibodies and other therapies in the treatment of inflammatory arthritis, capable of halting joint destruction and functional disability, there are new pressures on diagnostic and prognostic imaging. Early demonstration of pre-erosive inflammatory features and monitoring of the long-term effects of treatment are becoming increasingly important. Early detection of synovitis offers advantages in terms of allowing early instigation of therapy and may allow the identification of those patients displaying more aggressive disease who might benefit from early intervention with expensive DMARD therapy...
January 19, 2018: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29350559/visualizing-3d-food-microstructure-using-tomographic-methods-advantages-and-disadvantages
#15
Zi Wang, Els Herremans, Siem Janssen, Dennis Cantre, Pieter Verboven, Bart Nicolaï
X-ray micro-computed tomography (micro-CT) provides the unique ability to capture intact internal microstructure data without significant preparation of the sample. The fundamentals of micro-CT technology are briefly described along with a short introduction to basic image processing, quantitative analysis, and derivative computational modeling. The applications and limitations of micro-CT in industries such as meat, dairy, postharvest, and bread/confectionary are discussed to serve as a guideline to the plausibility of utilizing the technique for detecting features of interest...
January 18, 2018: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/29350469/in-vitro-to-in-vivo-benchmark-dose-comparisons-to-inform-risk-assessment-of-quantum-dot-nanomaterials
#16
REVIEW
Brittany A Weldon, William C Griffith, Tomomi Workman, David K Scoville, Terrance J Kavanagh, Elaine M Faustman
Engineered nanomaterials are currently under review for their potential toxicity; however, their use in consumer/commercial products has continued to outpace risk assessments. In vitro methods may be utilized as tools to improve the efficiency of risk assessment approaches. We propose a framework to compare relationships between previously published in vitro and in vivo toxicity assessments of cadmium-selenium containing quantum dots (QDs) using benchmark dose (BMD) and dosimetric assessment methods. Although data were limited this approach was useful for identifying sensitive assays and strains...
January 19, 2018: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/29350250/-abdominal-injuries-in-polytraumatized-adults-systematic-review
#17
C E M Pothmann, K Sprengel, H Alkadhi, G Osterhoff, F Allemann, T Jentzsch, G Jukema, H C Pape, H-P Simmen, V Neuhaus
Abdominal injuries are potentially life-threatening and occur in 20-25% of all polytraumatized patients. Blunt trauma is the main mechanism. The liver and spleen are most commonly injured and much less often the intestines. The clinical evaluation proves equivocal in many cases; therefore, the gold standard is computed tomography (CT), which has been increasingly used even in hemodynamically weakly stable or sometimes even unstable patients because it promptly provides precise diagnostic findings, which present the basis for successful therapy...
January 19, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29350068/primary-liver-cancers-part-1-histopathology-differential-diagnoses-and-risk-stratification
#18
Kun Jiang, Sameer Al-Diffhala, Barbara A Centeno
Hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC) are the 2 most common primary malignant liver tumors, with hepatocellular and bile ductular differentiation, respectively. This article reviews the key histopathological findings of these 2 primary liver cancers and includes a review of the role of ancillary testing for differential diagnosis, risk stratification according to the American Joint Committee on Cancer (AJCC) staging recommendation, and a review of precancerous lesions. A literature review was conducted to identify articles with information relevant to precancerous precursors, current histopathological classification, ancillary testing, and risk stratification of primary malignant liver tumors...
January 2018: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/29349833/a-systematic-assessment-of-key-design-and-performance-characteristics-of-drug-exposure-registries-requested-by-the-u-s-food-and-drug-administration
#19
Yanling Zhao, Ellen Pinnow, Jacqueline M Major
PURPOSE: The purpose of the study is to evaluate contributions to postmarket safety assessments and identify potential factors for enhancing implementation and utilization of registries in regulatory decision-making. METHODS: Registry documents (e.g., protocols, reports) submitted to the FDA were identified up to January 2016 through an extensive, systematic review of internal records and resources. We characterized nonpregnancy drug exposure registries based on prespecified design elements, performance, and regulatory impact...
January 19, 2018: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/29349758/is-dcis-overrated
#20
Joshua Feinberg, Rachel Wetstone, Dana Greenstein, Patrick Borgen
Ductal carcinoma in situ (DCIS), the noninvasive form of breast cancer (BC), comprises just over 20% of breast cancer cases diagnosed each year in the USA. Most patients are treated with local excision of the disease followed by whole breast radiation therapy. Total mastectomy is not an uncommon approach, and total mastectomy with a contralateral risk-reducing mastectomy has been on the rise in the past decade. In estrogen receptor-positive disease, patients are often offered endocrine ablative therapy with a selective estrogen receptor modulator or an aromatase inhibitor as both treatment and prevention...
2018: Cancer Treatment and Research
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