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https://www.readbyqxmd.com/read/28317797/analysis-of-a-novel-multiplex-polymerase-chain-reaction-assay-as-a-sensitive-tool-for-the-diagnosis-of-indeterminate-and-tuberculoid-forms-of-leprosy
#1
V Sundeep Chaitanya, Luz Cuello, Madhusmita Das, A Sudharsan, Pavithrra Ganesan, K Kanmani, Lakshmi Rajan, Mannam Ebenezer
OBJECTIVE/BACKGROUND: Clinical diagnosis of indeterminate and tuberculoid leprosy is often difficult due to limited and confounding signs and symptoms. In the current study, we evaluated the utility of new multiplex polymerase chain reaction (PCR) using Mycobacterium leprae-specific DNA sequences in the pseudogene regions of ML1545, ML2180, and ML2179 for PCR-based diagnosis of indeterminate leprosy (IND) and leprosy cases across the immunological spectrum. The sensitivity was compared with that of RLEP PCR...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28317407/using-molecular-diagnostic-testing-to-personalize-the-treatment-of-patients-with-gastrointestinal-stromal-tumors
#2
Amber E Bannon, Lillian R Klug, Christopher L Corless, Michael C Heinrich
The diagnosis and treatment of gastrointestinal stromal tumor (GIST) has emerged as a paradigm for modern cancer treatment ("precision medicine"), as it highlights the importance of matching molecular defects with specific therapies. Over the past two decades, the molecular classification and diagnostic work up of GIST has been radically transformed, accompanied by the development of molecular therapies for specific subgroups of GIST. This review summarizes the developments in the field of molecular diagnosis of GIST, particularly as they relate to optimizing medical therapy...
March 20, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28316893/contrasting-determinants-for-the-introduction-and-establishment-success-of-exotic-birds-in-taiwan-using-decision-trees-models
#3
Shih-Hsiung Liang, Bruno Andreas Walther, Bao-Sen Shieh
BACKGROUND: Biological invasions have become a major threat to biodiversity, and identifying determinants underlying success at different stages of the invasion process is essential for both prevention management and testing ecological theories. To investigate variables associated with different stages of the invasion process in a local region such as Taiwan, potential problems using traditional parametric analyses include too many variables of different data types (nominal, ordinal, and interval) and a relatively small data set with too many missing values...
2017: PeerJ
https://www.readbyqxmd.com/read/28316158/-cost-effectiveness-analysis-of-octreotide-long-acting-release-and-lanreotide-slow-release-for-the-treatment-of-postoperative-patients-with-active-acromegaly-in-china
#4
J W Xuan, Z Y Zhang, Y F Wang, Z G Mao, Y J Lu, R Z Wang
Objective: To evaluate the cost-effectiveness of octreotide long acting release (LAR) vs lanreotide slow release (SR) for the treatment of postoperative acromegalic patients with elevated levels of growth hormone (GH) and insulin-like growth factor 1 (IGF-1) in China. Methods: A decision tree model was constructed and the treatment impact was projected for one year in Chinese setting. The clinical efficacy measure used was the percentage of patients achieving normalization (control) of either IGF-1 or GH levels...
March 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28314157/bayesian-updating-in-a-fault-tree-model-for-shipwreck-risk-assessment
#5
H Landquist, L Rosén, A Lindhe, T Norberg, I-M Hassellöv
Shipwrecks containing oil and other hazardous substances have been deteriorating on the seabeds of the world for many years and are threatening to pollute the marine environment. The status of the wrecks and the potential volume of harmful substances present in the wrecks are affected by a multitude of uncertainties. Each shipwreck poses a unique threat, the nature of which is determined by the structural status of the wreck and possible damage resulting from hazardous activities that could potentially cause a discharge...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28296664/histomorphology-and-immunophenotype-of-eczematous-skin-lesions-revisited-skin-biopsies-are-not-reliable-in-differentiating-allergic-contact-dermatitis-irritant-contact-dermatitis-and-atopic-dermatitis
#6
Verena G Frings, Almut Böer-Auer, Kristine Breuer
Lesions of allergic contact dermatitis (ACD), irritant contact dermatitis (ICD), and atopic dermatitis (AD) share similar clinical features and thus, their diagnosis can be challenging. The aim of this study was to reassess histopathology and immunophenotyping properties to distinguish between ACD, ICD, and AD. Charts of patients with eczema, who had undergone complete routine diagnostic workup (skin biopsies, patch tests, skin prick tests, and respectively or serum IgE levels), were reviewed. Thirty-five skin biopsy specimens of 28 patients (mean age 64 ± 15 years; ♀ = 13 ♂ = 15) with clear diagnosis of ACD (n = 15), ICD (n = 6), or AD (n = 14) were analyzed...
March 10, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28296636/discovering-sparse-transcription-factor-codes-for-cell-states-and-state-transitions-during-development
#7
Leon A Furchtgott, Samuel Melton, Vilas Menon, Sharad Ramanathan
Computational analysis of gene expression to determine both the sequence of lineage choices made by multipotent cells and to identify the genes influencing these decisions is challenging. Here we discover a pattern in the expression levels of a sparse subset of genes among cell types in B- and T-cell developmental lineages that correlates with developmental topologies. We develop a statistical framework using this pattern to simultaneously infer lineage transitions and the genes that determine these relationships...
March 15, 2017: ELife
https://www.readbyqxmd.com/read/28293215/classification-of-different-degrees-of-disability-following-intracerebral-hemorrhage-a-decision-tree-analysis-from-vista-ich-collaboration
#8
Thanh G Phan, Jian Chen, Richard Beare, Henry Ma, Benjamin Clissold, John Van Ly, Velandai Srikanth
BACKGROUND AND PURPOSE: Prognostication following intracerebral hemorrhage (ICH) has focused on poor outcome at the expense of lumping together mild and moderate disability. We aimed to develop a novel approach at classifying a range of disability following ICH. METHODS: The Virtual International Stroke Trial Archive collaboration database was searched for patients with ICH and known volume of ICH on baseline CT scans. Disability was partitioned into mild [modified Rankin Scale (mRS) at 90 days of 0-2], moderate (mRS = 3-4), and severe disabilities (mRS = 5-6)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28292485/a-cost-effectiveness-analysis-of-reverse-total-shoulder-arthroplasty-versus-hemiarthroplasty-for-the-management-of-complex-proximal-humeral-fractures-in-the-elderly
#9
Georg Osterhoff, Nathan N O'Hara, Jennifer D'Cruz, Sheila A Sprague, Nick Bansback, Nathan Evaniew, Gerard P Slobogean
BACKGROUND: There is ongoing debate regarding the optimal surgical treatment of complex proximal humeral fractures in elderly patients. OBJECTIVES: To evaluate the cost-effectiveness of reverse total shoulder arthroplasty (RTSA) compared with hemiarthroplasty (HA) in the management of complex proximal humeral fractures, using a cost-utility analysis. METHODS: On the basis of data from published literature, a cost-utility analysis was conducted using decision tree and Markov modeling...
March 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28291589/therapy-for-relapsed-multiple-myeloma-guidelines-from-the-mayo-stratification-for-myeloma-and-risk-adapted-therapy
#10
REVIEW
David Dingli, Sikander Ailawadhi, P Leif Bergsagel, Francis K Buadi, Angela Dispenzieri, Rafael Fonseca, Morie A Gertz, Wilson I Gonsalves, Susan R Hayman, Prashant Kapoor, Taxiarchis Kourelis, Shaji K Kumar, Robert A Kyle, Martha Q Lacy, Nelson Leung, Yi Lin, John A Lust, Joseph R Mikhael, Craig B Reeder, Vivek Roy, Stephen J Russell, Taimur Sher, A Keith Stewart, Rahma Warsame, Stephen R Zeldenrust, S Vincent Rajkumar, Asher A Chanan Khan
Life expectancy in patients with multiple myeloma is increasing because of the availability of an increasing number of novel agents with various mechanisms of action against the disease. However, the disease remains incurable in most patients because of the emergence of resistant clones, leading to repeated relapses of the disease. In 2015, 5 novel agents were approved for therapy for relapsed multiple myeloma. This surfeit of novel agents renders management of relapsed multiple myeloma more complex because of the occurrence of multiple relapses, the risk of cumulative and emergent toxicity from previous therapies, as well as evolution of the disease during therapy...
March 10, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/28291545/adding-bevacizumab-to-single-agent-chemotherapy-for-the-treatment-of-platinum-resistant-recurrent-ovarian-cancer-a-cost-effectiveness-analysis-of-the-aurelia-trial
#11
Weiya Z Wysham, Elisabeth M Schaffer, Theresa Coles, Dario R Roque, Stephanie B Wheeler, Kenneth H Kim
OBJECTIVE: AURELIA, a randomized phase III trial of adding bevacizumab (B) to single agent chemotherapy (CT) for the treatment of platinum-resistant recurrent ovarian cancer, demonstrated improved progression free survival (PFS) in the B+CT arm compared to CT alone. We aimed to evaluate the cost effectiveness of adding B to CT in the treatment of platinum-resistant recurrent ovarian cancer. METHODS: A decision tree model was constructed to evaluate the cost effectiveness of adding bevacizumab (B) to single agent chemotherapy (CT) based on the arms of the AURELIA trial...
March 10, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28288463/guide-to-treatment-of-tattoo-complications-and-tattoo-removal
#12
Jørgen Serup, Wolfgang Bäumler
Clinicians in the fields of general medicine, dermatology, and plastic surgery are in their work now and then confronted with tattoo complications. Recognizing the rather few important diagnostic groups and urgencies, the medical 'decision tree' of treatment becomes quite simple. Acute conditions are dominated by bacterial infections needing antibiotic treatment. Systemic infection is a matter of urgency and requires intravenous treatment in a hospital without delay to prevent septic shock. Inflammatory reactions are a real challenge...
2017: Current Problems in Dermatology
https://www.readbyqxmd.com/read/28286707/molecular-phylogenies-confirm-the-presence-of-two-cryptic-hemimycale-species-in-the-mediterranean-and-reveal-the-polyphyly-of-the-genera-crella-and-hemimycale-demospongiae-poecilosclerida
#13
Maria J Uriz, Leire Garate, Gemma Agell
BACKGROUND: Sponges are particularly prone to hiding cryptic species as their paradigmatic plasticity often favors species phenotypic convergence as a result of adaptation to similar habitat conditions. Hemimycale is a sponge genus (Family Hymedesmiidae, Order Poecilosclerida) with four formally described species, from which only Hemimycale columella has been recorded in the Atlanto-Mediterranean basin, on shallow to 80 m deep bottoms. Contrasting biological features between shallow and deep individuals of Hemimycale columella suggested larger genetic differences than those expected between sponge populations...
2017: PeerJ
https://www.readbyqxmd.com/read/28279863/gold-standard-for-computer-assisted-morphological-sperm-analysis
#14
Violeta Chang, Alejandra Garcia, Nancy Hitschfeld, Steffen Härtel
BACKGROUND AND OBJECTIVE: Published algorithms for classification of human sperm heads are based on relatively small image databases that are not open to the public, and thus no direct comparison is available for competing methods. We describe a gold-standard for morphological sperm analysis (SCIAN-MorphoSpermGS), a dataset of sperm head images with expert-classification labels in one of the following classes: normal, tapered, pyriform, small or amorphous. This gold-standard is for evaluating and comparing known techniques and future improvements to present approaches for classification of human sperm heads for semen analysis...
March 2, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28276142/subgroup-finding-via-bayesian-additive-regression-trees
#15
Siva Sivaganesan, Peter Müller, Bin Huang
We provide a Bayesian decision theoretic approach to finding subgroups that have elevated treatment effects. Our approach separates the modeling of the response variable from the task of subgroup finding and allows a flexible modeling of the response variable irrespective of potential subgroups of interest. We use Bayesian additive regression trees to model the response variable and use a utility function defined in terms of a candidate subgroup and the predicted response for that subgroup. Subgroups are identified by maximizing the expected utility where the expectation is taken with respect to the posterior predictive distribution of the response, and the maximization is carried out over an a priori specified set of candidate subgroups...
March 9, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28275900/a-simple-classification-system-the-tree-flowchart-for-breast-mri-can-reduce-the-number-of-unnecessary-biopsies-in-mri-only-lesions
#16
Ramona Woitek, Claudio Spick, Melanie Schernthaner, Margaretha Rudas, Panagiotis Kapetas, Maria Bernathova, Julia Furtner, Katja Pinker, Thomas H Helbich, Pascal A T Baltzer
OBJECTIVES: To assess whether using the Tree flowchart obviates unnecessary magnetic resonance imaging (MRI)-guided biopsies in breast lesions only visible on MRI. METHODS: This retrospective IRB-approved study evaluated consecutive suspicious (BI-RADS 4) breast lesions only visible on MRI that were referred to our institution for MRI-guided biopsy. All lesions were evaluated according to the Tree flowchart for breast MRI by experienced readers. The Tree flowchart is a decision rule that assigns levels of suspicion to specific combinations of diagnostic criteria...
March 8, 2017: European Radiology
https://www.readbyqxmd.com/read/28270324/-imaging-methods-used-in-the-differential-diagnosis-between-brain-tumour-relapse-and-radiation-necrosis-after-stereotactic-radiosurgery-of-brain-metastases-literature-review
#17
I Menoux, J-P Armspach, G Noël, D Antoni
After stereotactic radiosurgery for a cerebral metastasis, one of the dreaded toxicities is radionecrosis. In the follow-up of these patients, it is impossible to distinguish radiation necrosis from tumour relapse either clinically or with MRI. In current practice, many imaging methods are designed such as special sequences of MRI (dynamic susceptibility contrast perfusion and susceptibility-weighted imaging, diffusion), proton magnetic resonance spectroscopy, positron emission tomography, or more seldom 201-thallium single-photon emission computerized tomography...
December 2016: Cancer Radiothérapie: Journal de la Société Française de Radiothérapie Oncologique
https://www.readbyqxmd.com/read/28269764/targeted-metabolomic-analysis-of-soluble-lysates-from-platelets-of-patients-with-mild-cognitive-impairment-and-alzheimer-s-disease-compared-to-healthy-controls-is-pc-aec40-4-a-promising-diagnostic-tool
#18
Herbert Oberacher, Kathrin Arnhard, Caroline Linhart, Angela Diwo, Josef Marksteiner, Christian Humpel
Alzheimer's disease (AD) is a progressive neurodegenerative disorder of the central nervous system. The use of biological fluids in AD diagnosis remains limited to the analysis of specific protein biomarkers in cerebrospinal fluid. However, metabolomic analysis has recently revealed several metabolites in plasma, especially phosphatidylcholines (PC), as putative biomarkers specific for AD. Following on previous reports of platelet abnormalities in AD, we hypothesized that platelets metabolites released in plasma may offer new biomarkers in AD...
February 28, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28269683/classification-of-squat-quality-with-inertial-measurement-units-in-the-single-leg-squat-mobility-test
#19
Rezvan Kianifar, Alex Lee, Sachin Raina, Dana Kulic
Many assessment and diagnosis protocols in rehabilitation, orthopedic surgery and sports medicine rely on mobility tests like the Single Leg Squat (SLS). In this study, a set of three Inertial Measurement Units (IMUs) were used to estimate the joint pose during SLS and to classify the SLS as poor, moderate or good. An Extended Kalman Filter pose estimation method was used to estimate kinematic joint variables, and time domain features were generated based on these variables. The most important features were then selected and used to train Support Vector Machine (SVM), Linear Multinomial Logistic Regression, and Decision Tree classifiers...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269374/detection-of-chewing-from-piezoelectric-film-sensor-signals-using-ensemble-classifiers
#20
Muhammad Farooq, Edward Sazonov
Selection and use of pattern recognition algorithms is application dependent. In this work, we explored the use of several ensembles of weak classifiers to classify signals captured from a wearable sensor system to detect food intake based on chewing. Three sensor signals (Piezoelectric sensor, accelerometer, and hand to mouth gesture) were collected from 12 subjects in free-living conditions for 24 hrs. Sensor signals were divided into 10 seconds epochs and for each epoch combination of time and frequency domain features were computed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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