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Digital disease detection

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https://www.readbyqxmd.com/read/28934949/online-surveillance-of-media-health-event-reporting-in-nepal-digital-disease-detection-from-a-one-health-perspective
#1
Jessica S Schwind, Stephanie A Norman, Dibesh Karmacharya, David J Wolking, Sameer M Dixit, Rajesh M Rajbhandari, Sumiko R Mekaru, John S Brownstein
BACKGROUND: Traditional media and the internet are crucial sources of health information. Media can significantly shape public opinion, knowledge and understanding of emerging and endemic health threats. As digital communication rapidly progresses, local access and dissemination of health information contribute significantly to global disease detection and reporting. METHODS: Health event reports in Nepal (October 2013-December 2014) were used to characterize Nepal's media environment from a One Health perspective using HealthMap - a global online disease surveillance and mapping tool...
September 21, 2017: BMC International Health and Human Rights
https://www.readbyqxmd.com/read/28934192/metabolomics-and-cognition-in-african-american-adults-in-midlife-the-atherosclerosis-risk-in-communities-study
#2
J Bressler, B Yu, T H Mosley, D S Knopman, R F Gottesman, A Alonso, A R Sharrett, L M Wruck, E Boerwinkle
Clinical studies have shown alterations in metabolic profiles when patients with mild cognitive impairment and Alzheimer's disease dementia were compared to cognitively normal subjects. Associations between 204 serum metabolites measured at baseline (1987-1989) and cognitive change were investigated in 1035 middle-aged community-dwelling African American participants in the biracial Atherosclerosis Risk in Communities (ARIC) Study. Cognition was evaluated using the Delayed Word Recall Test (DWRT; verbal memory), the Digit Symbol Substitution Test (DSST; processing speed) and the Word Fluency Test (WFT; verbal fluency) at visits 2 (1990-1992) and 4 (1996-1998)...
July 18, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28931389/semi-automated-quantification-of-hard-exudates-in-colour-fundus-photographs-diagnosed-with-diabetic-retinopathy
#3
Abhilash Goud Marupally, Kiran Kumar Vupparaboina, Hari Kumar Peguda, Ashutosh Richhariya, Soumya Jana, Jay Chhablani
BACKGROUND: Hard exudates (HEs) are the classical sign of diabetic retinopathy (DR) which is one of the leading causes of blindness, especially in developing countries. Accordingly, disease screening involves examining HEs qualitatively using fundus camera. However, for monitoring the treatment response, quantification of HEs becomes crucial and hence clinicians now seek to measure the area of HEs in the digital colour fundus (CF) photographs. Against this backdrop, we proposed an algorithm to quantify HEs using CF images and compare with previously reported technique using ImageJ...
September 20, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28931297/-intracranial-pressure-evaluation-by-ophthalmologist
#4
J Čmelo, R Illéš, J Šteňo
The value of ICT is important in diagnosis of the diseases of the eye and orbit Methods for direct measurement of intracranial pressure (ICT) are exact, but they are invasive and there is some risk of infection and damage of the tissue. Currently there are 2 valid indirect methods of mesurement of IKT. Digital Ophthalmodynamometry (D-ODM) and Transcranial Doppler ultrasonography (TDU). D-ODM is a non-invasive method for measuring of the Pulsating Venous Pressure (VPT). We can measure VPT by the pulse phenomena...
2017: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/28930184/use-of-wavelet-transform-to-detect-compensated-and-decompensated-stages-in-the-congestive-heart-failure-patient
#5
Pratibha Sharma, Kimberly Newman, Carlin S Long, A J Gasiewski, Frank Barnes
This research work is aimed at improving health care, reducing cost, and the occurrence of emergency hospitalization in patients with Congestive Heart Failure (CHF) by analyzing heart and lung sounds to distinguish between the compensated and decompensated states. Compensated state defines stable state of the patient but with lack of retention of fluids in lungs, whereas decompensated state leads to unstable state of the patient with lots of fluid retention in the lungs, where the patient needs medication. Acoustic signals from the heart and the lung were analyzed using wavelet transforms to measure changes in the CHF patient's status from the decompensated to compensated and vice versa...
September 20, 2017: Biosensors
https://www.readbyqxmd.com/read/28929347/an-ethical-assessment-model-for-digital-disease-detection-technologies
#6
Kerstin Denecke
Digital epidemiology, also referred to as digital disease detection (DDD), successfully provided methods and strategies for using information technology to support infectious disease monitoring and surveillance or understand attitudes and concerns about infectious diseases. However, Internet-based research and social media usage in epidemiology and healthcare pose new technical, functional and formal challenges. The focus of this paper is on the ethical issues to be considered when integrating digital epidemiology with existing practices...
September 20, 2017: Life Sciences, Society and Policy
https://www.readbyqxmd.com/read/28928368/detection-of-clinically-relevant-copy-number-alterations-in-oral-cancer-progression-using-multiplexed-droplet-digital-pcr
#7
Curtis B Hughesman, X J David Lu, Kelly Y P Liu, Yuqi Zhu, Rebecca M Towle, Charles Haynes, Catherine F Poh
Copy number alterations (CNAs), a common genomic event during carcinogenesis, are known to affect a large fraction of the genome. Common recurrent gains or losses of specific chromosomal regions occur at frequencies that they may be considered distinctive features of tumoral cells. Here we introduce a novel multiplexed droplet digital PCR (ddPCR) assay capable of detecting recurrent CNAs that drive tumorigenesis of oral squamous cell carcinoma. Applied to DNA extracted from oral cell lines and clinical samples of various disease stages, we found good agreement between CNAs detected by our ddPCR assay with those previously reported using comparative genomic hybridization or single nucleotide polymorphism arrays...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28925935/technical-advances-in-the-measurement-of-residual-disease-in-acute-myeloid-leukemia
#8
REVIEW
Gregory W Roloff, Catherine Lai, Christopher S Hourigan, Laura W Dillon
Outcomes for those diagnosed with acute myeloid leukemia (AML) remain poor. It has been widely established that persistent residual leukemic burden, often referred to as measurable or minimal residual disease (MRD), after induction therapy or at the time of hematopoietic stem cell transplant (HSCT) is highly predictive for adverse clinical outcomes and can be used to identify patients likely to experience clinically evident relapse. As a result of inherent genetic and molecular heterogeneity in AML, there is no uniform method or protocol for MRD measurement to encompass all cases...
September 19, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28911154/prognostic-significance-of-circulating-ret-m918t-mutated-tumor-dna-in-patients-with-advanced-medullary-thyroid-carcinoma
#9
Gilbert J Cote, Caitlin Evers, Mimi I Hu, Elizabeth G Grubbs, Michelle D Williams, Tao Hai, Dzifa Y Duose, Michal R Houston, Jacquelin H Bui, Meenakshi Mehrotra, Steven G Waguespack, Naifa L Busaidy, Maria E Cabanillas, Mouhammed Amir Habra, Rajyalakshmi Luthra, Steven I Sherman
Context: Interpretation of calcitonin measurement to predict the prognosis of medullary thyroid carcinoma (MTC) requires multiple measurements over an extended time period, making it an imperfect biomarker for evaluating prognosis or disease behavior. Single circulating cell-free DNA (cfDNA) values have been shown to be a valuable prognostic marker for several solid tumors. Objective: We tested the hypothesis that cfDNA containing the RET M918T mutation could be detected in the blood of patients with advanced MTC whose tumor harbored an M918T mutation and would be able to predict overall survival more reliably than calcitonin...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28910375/application-of-droplet-digital-pcr-for-quantitative-detection-of-spiroplasma-citri-in-comparison-with-real-time-pcr
#10
Yogita Maheshwari, Vijayanandraj Selvaraj, Subhas Hajeri, Raymond Yokomi
Droplet digital polymerase chain reaction (ddPCR) is a method for performing digital PCR that is based on water-oil emulsion droplet technology. It is a unique approach to measure the absolute copy number of nucleic acid targets without the need of external standards. This study evaluated the applicability of ddPCR as a quantitative detection tool for the Spiroplasma citri, causal agent of citrus stubborn disease (CSD) in citrus. Two sets of primers, SP1, based on the spiral in housekeeping gene, and a multicopy prophage gene, SpV1 ORF1, were used to evaluate ddPCR in comparison with real time (quantitative) PCR (qPCR) for S...
2017: PloS One
https://www.readbyqxmd.com/read/28899979/clinical-performance-evaluation-of-the-idylla-nras-braf-mutation-test-on-retrospectively-collected-formalin-fixed-paraffin-embedded-colorectal-cancer-tissue
#11
Louise Johnston, Michael Power, Philip Sloan, Anna Long, Angela Silmon, Ben Chaffey, Andrea Jane Lisgo, Liam Little, Ellen Vercauteren, Torben Steiniche, Tine Meyer, John Simpson
AIMS: Understanding the molecular mechanisms of underlying disease has led to a movement away from the one-drug-fits-all paradigm towards treatment tailored to the genetic profile of the patient. The Biocartis Idylla platform is a novel fully automated, real-time PCR-based in vitro diagnostic system. The Idylla NRAS-BRAF mutation test has been developed for the qualitative detection of mutations in NRAS and BRAF oncogenes, facilitating genetic profiling of patients with cancer. The aim of this study was to carry out a formal clinical performance evaluation...
September 12, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28899967/circulating-cell-free-dna-for-metastatic-cervical-cancer-detection-genotyping-and-monitoring
#12
Zhigang Kang, Sanja Stevanović, Christian S Hinrichs, Liang Cao
PURPOSE: Circulating cell-free (ccf) human papillomavirus (HPV) DNA may serve as a unique tumor marker for HPV-associated malignancies, including cervical cancer. We developed a method to genotype and quantify circulating HPV DNA in patients with HPV16- or HPV18-positive metastatic cervical cancer for potential disease monitoring and treatment-related decision making. PATIENTS AND METHODS: In this retrospective study, HPV ccfDNA was measured in serum samples from 19 metastatic cervical cancer patients by duplex digital droplet (dd) PCR...
September 12, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28891364/an-update-on-pcr-use-for-minimal-residual-disease-monitoring-in-acute-lymphoblastic-leukemia
#13
Vittorio Nunes, Gianni Cazzaniga, A Biondi
Acute lymphoblastic leukemia (ALL) is the first neoplasm where the assessment of early response to therapy by minimal residual disease (MRD) monitoring has proven to be a fundamental tool for guiding therapeutic choices. In recent years, thanks to real-time quantitative PCR (qPCR), MRD monitoring has further achieved higher levels of sensitivity and standardization. However, some outstanding issues still remain to be addressed and emerging technologies hold the promise of improving MRD detection in ALL patients...
September 11, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/28885355/secondary-hypertrophic-osteoarthropathy-caused-by-non-pleural-or-pulmonary-tumors
#14
MULTICENTER STUDY
Hans-Jonas Meyer, Leonard Leifels, Andreas Gunter Bach, Alexey Surov
Hypertrophic osteoarthropathy (HOA) is a rare paraneoplastic syndrome characterized by digital clubbing, periosteal reaction, polyarthralgia, arthritis, and synovitis. Herein, we report a case series of patients with secondary HOA caused by non-pleural or pulmonary tumors.The radiologic databases of 2 tertiary university hospitals were retrospectively screened for secondary HOA patients. In addition, a systemic review of the published case reports. Only HOA cases with non-pleural or pulmonary malignancies were involved into the study...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28870962/value-of-additional-digital-breast-tomosynthesis-for-preoperative-staging-of-breast-cancer-in-dense-breasts
#15
Julia Krammer, Kathrin Stepniewski, Clemens G Kaiser, Joachim Brade, Philipp Riffel, Stefan O Schoenberg, Klaus Wasser
AIM: This retrospective study was initiated to determine the diagnostic value of additional preoperative breast tomosynthesis (DBT) for breast cancer staging in dense breasts. PATIENTS AND METHODS: Sixty-six patients (69 breasts) with findings of American College of Radiology category 3 or 4 with Breast Imaging Reporting and Data System 5, 6 or 0 were included. All patients underwent digital mammography and additional DBT. RESULTS: A total of 40/69 (58%) cancers were detected on both mammography and DBT, 23 (33...
September 2017: Anticancer Research
https://www.readbyqxmd.com/read/28868565/comparison-of-the-amplification-refractory-mutation-system-super-amplification-refractory-mutation-system-and-droplet-digital-pcr-for-t790%C3%A2-m-mutation-detection-in-non-small-cell-lung-cancer-after-failure-of-tyrosine-kinase-inhibitor-treatment
#16
Lucheng Zhu, Shirong Zhang, Yanping Xun, Yanping Jiang, Bing Xia, Xueqin Chen, Limin Wang, Hong Jiang, Shenglin Ma
Plasma mutation detection has the advantages of non-invasiveness and accessibility. Here, we evaluated three methods, the amplification refractory mutation system (ARMS), second-generation ARMS (SuperARMS), and droplet digital PCR (ddPCR), to assess their concordance and feasibility for the detection of mutations in plasma samples. Non-small lung cancer patients with stage IIIB/IV that were resistant to epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) treatment were enrolled. Blood samples were collected within 14 days after TKI resistance...
September 3, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28865852/prevalence-of-digital-dermatitis-in-young-stock-in-alberta-canada-using-pen-walks
#17
C Jacobs, K Orsel, H W Barkema
Digital dermatitis (DD), an infectious bacterial foot lesion prevalent in dairy cattle worldwide, reduces both animal welfare and production. This disease was recently identified in replacement dairy heifers, with implications including increased risk of DD and decreased milk production in first lactation, poor reproductive performance, and altered hoof conformation. Therefore, a simple and effective method is needed to identify DD in young stock and to determine risk factors for DD in this group so that effective control strategies can be implemented...
August 30, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28865482/decrease-in-bone-mineral-density-during-three-months-after-diagnosis-of-early-rheumatoid-arthritis-measured-by-digital-x-ray-radiogrammetry-predicts-radiographic-joint-damage-after-one-year
#18
Michael Ziegelasch, Kristina Forslind, Thomas Skogh, Katrine Riklund, Alf Kastbom, Ewa Berglin
BACKGROUND: Periarticular osteopenia is an early sign of incipient joint injury in rheumatoid arthritis (RA), but cannot be accurately quantified using conventional radiography. Digital X-ray radiogrammetry (DXR) is a computerized technique to estimate bone mineral density (BMD) from hand radiographs. The aim of this study was to evaluate whether decrease in BMD of the hands (BMD loss), as determined by DXR 3 months after diagnosis, predicts radiographic joint damage after 1 and 2 years in patients with early RA...
September 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28858647/hair-segmentation-using-adaptive-threshold-from-edge-and-branch-length-measures
#19
Ian Lee, Xian Du, Brian Anthony
BACKGROUND: Non-invasive imaging techniques allow the monitoring of skin structure and diagnosis of skin diseases in clinical applications. However, hair in skin images hampers the imaging and classification of the skin structure of interest. Although many hair segmentation methods have been proposed for digital hair removal, a major challenge in hair segmentation remains in detecting hairs that are thin, overlapping, of similar contrast or color to underlying skin, or overlaid on highly-textured skin structure...
August 24, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28855040/-detection-and-clinical-significance-of-abundance-of-egfr-mutation
#20
REVIEW
Yi Shao, Diansheng Zhong
Non-small cell lung cancer (NSCLC) patients, with sensitive epidermal growth factor receptor (EGFR) mutations react well to tyrosine kinase inhibitors (TKIs). However, the efficacy of TKIs on patients with the same mutant types differs dramatically. It is implied that the different quantities of mutant alleles could be one of the reasons underlying. Patients with high abundance of EGFR mutation might benefit more from TKIs. There are no universal standards for the definition of EGFR mutant abundance. Abundance could be semi-quantified according to the different sensitivities of detection methods, quantified with quantifying detection techniques such as digital PCR or next generation sequencing, or quantified based on the expression of mutant proteins...
August 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
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