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https://www.readbyqxmd.com/read/28503676/learning-optimal-individualized-treatment-rules-from-electronic-health-record-data
#1
Yuanjia Wang, Peng Wu, Ying Liu, Chunhua Weng, Donglin Zeng
Medical research is experiencing a paradigm shift from "one-size-fits-all" strategy to a precision medicine approach where the right therapy, for the right patient, and at the right time, will be prescribed. We propose a statistical method to estimate the optimal individualized treatment rules (ITRs) that are tailored according to subject-specific features using electronic health records (EHR) data. Our approach merges statistical modeling and medical domain knowledge with machine learning algorithms to assist personalized medical decision making using EHR...
October 2016: IEEE International Conference on Healthcare Informatics IEEE International Conference on Healthcare Informatics
https://www.readbyqxmd.com/read/28488287/design-for-the-transfer-of-a-validated-lc-ms-ms-analytical-method-for-the-determination-of-antimicrobial-residues-in-honey-from-low-resolution-to-high-resolution-mass-spectrometry
#2
Khaled E L Hawari, Mohamad A L Iskandarani, Sophie Mompelat, Dominique Hurtaud-Pessel, Eric Verdon
RATIONALE: This paper investigates the validity of the transfer of a Liquid Chromatography tandem Mass Spectrometry (LC-MS/MS) method for the determination of veterinary medicinal products in honey and compared to an LC- Linear Ion Trap/Orbitrap Mass Spectrometry method. Descriptive statistical approach was performed in order to assess if such transfer may succeed or fail. This approach is based on the simultaneous evaluation of the trueness and of the intermediate precision for each compound at a 95% interval of confidence of both analytical techniques...
May 10, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28458147/analysis-of-gait-symmetry-during-over-ground-walking-in-children-with-autism-spectrum-disorder
#3
Jeffrey D Eggleston, John R Harry, Robbin A Hickman, Janet S Dufek
Gait symmetry is utilized as an indicator of neurologic function. Healthy gait often exhibits minimal asymmetries, while pathological gait exhibits exaggerated asymmetries. The purpose of this study was to examine symmetry of mechanical gait parameters during over-ground walking in children with Autism Spectrum Disorder (ASD). Kinematic and kinetic data were obtained from 10 children (aged 5-12 years) with ASD. The Model Statistic procedure (α=0.05) was used to compare gait related parameters between limbs...
April 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28456503/novel-oxytocin-receptor-variants-in-laboring-women-requiring-high-doses-of-oxytocin
#4
Erin L Reinl, Zane A Goodwin, Nandini Raghuraman, Grace Y Lee, Erin Y Jo, Beakal M Gezahegn, Meghan K Pillai, Alison G Cahill, Cristina De Guzman Strong, Sarah K England
BACKGROUND: Although oxytocin commonly is used to augment or induce labor, it is difficult to predict its effectiveness because oxytocin dose requirements vary significantly among women. One possibility is that women requiring high or low doses of oxytocin have variations in the oxytocin receptor gene. OBJECTIVES: To identify oxytocin receptor gene variants in laboring women with low and high oxytocin dosage requirements. STUDY DESIGN: Term, nulliparous women requiring oxytocin doses of ≤4 mU/min (low-dose requiring, n = 83) or ≥20 mU/min (high-dose requiring, n = 104) for labor augmentation or induction provided consent to a postpartum blood draw as a source of genomic DNA...
April 26, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28430854/dynamic-modeling-and-network-approaches-for-omics-time-course-data-overview-of-computational-approaches-and-applications
#5
Yulan Liang, Arpad Kelemen
Inferring networks and dynamics of genes, proteins, cells and other biological entities from high-throughput biological omics data is a central and challenging issue in computational and systems biology. This is essential for understanding the complexity of human health, disease susceptibility and pathogenesis for Predictive, Preventive, Personalized and Participatory (P4) system and precision medicine. The delineation of the possible interactions of all genes/proteins in a genome/proteome is a task for which conventional experimental techniques are ill suited...
April 18, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28430547/enhancing-insights-into-pulmonary-vascular-disease-pvd-through-a-precision-medicine-approach-a-joint-nhlbi-cmref-workshop-report
#6
John H Newman, Stuart Rich, Steven H Abman, John H Alexander, John Barnard, Gerald J Beck, Raymond L Benza, Todd M Bull, Stephen Y Chan, Hyung J Chun, Declan Doogan, Jocelyn Dupuis, Serpil C Erzurum, Robert P Frantz, Mark Geraci, Hunter Gillies, Mark Gladwin, Michael P Gray, Anna R Hemnes, Roy S Herbst, Adrian F Hernandez, Nicholas S Hill, Evelyn M Horn, Kendall Hunter, Zhi-Cheng Jing, Roger Johns, Sanjay Kaul, Steven M Kawut, Tim Lahm, Jane A Leopold, Greg D Lewis, Stephen C Mathai, Vallerie V McLaughlin, Evangelos D Michelakis, Steven D Nathan, William Nichols, Grier Page, Marlene Rabinovitch, Jonathan Rich, Franz Rischard, Sharon Rounds, Sanjiv J Shah, Victor F Tapson, Naomi Lowy, Norman Stockbridge, Gail Weinmann, Lei Xiao
The Division of Lung Diseases of the National Heart, Lung and Blood Institute, (NHLBI) and the Cardiovascular Medical Education and Research Fund (CMREF), held a workshop to discuss to leverage of the anticipated scientific output from the recently launched "Redefining Pulmonary Hypertension (PH) through Pulmonary Vascular Disease Phenomics" (PVDOMICS) program. PVDOMICS is a protocol driven network to analyze PH patient populations to define novel pulmonary vascular disease (PVD) phenotypes. Basic, translational and clinical investigators, patient advocacy organizations, regulatory agencies, and pharmaceutical industry experts discussed the application of precision medicine to PVD clinical trials...
April 21, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28427123/-predictive-value-of-liver-pathologic-changes-in-determining-the-effectiveness-of-entecavir-treatment-for-chronic-hepatitis-b-an-analysis-of-1-366-cases
#7
M M Sun, W Zhang, G Chen, Y An, Y Q Wang, Q H Shang
Objective: To analyze the relationship between baseline liver pathologic changes and the effectiveness of entecavir(ETV) and investigate the predictive value of baseline liver pathologic changes in determining the effectiveness of ETV, to provide reliable basis for precision medicine in patients with chronic hepatitis B(CHB). Methods: A total of 1 366 cases with CHB were retrospectively recruited who underwent liver biopsy between January 2006 to June 2016 and were treated with ETV over 96 weeks.The relationship between baseline liver pathologic changes and the antiviral responses to ETV at 48, 96 weeks were compared...
April 18, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28410607/aprecisekure-an-approach-of-precision-medicine-in-a-rare-disease
#8
Ottavia Spiga, Vittoria Cicaloni, Andrea Bernini, Andrea Zatkova, Annalisa Santucci
BACKGROUND: Alkaptonuria (AKU; OMIM:203500) is a classic Mendelian genetic disorder described by Garrod already in 1902. It causes urine to turn black upon exposure to air and also leads to ochronosis as well as early osteoarthritis. Our objective is the implementation of a Precision Medicine (PM) approach to AKU. We present here a novel ApreciseKUre database facilitating the collection, integration and analysis of patient data in order to create an AKU-dedicated "PM Ecosystem" in which genetic, biochemical and clinical resources can be shared among registered researchers...
April 14, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28407095/genetic-and-environmental-risk-factors-for-rheumatoid-arthritis-in-a-uk-african-ancestry-population-the-genra-case-control-study
#9
Matthew Traylor, Charles Curtis, Hamel Patel, Gerome Breen, Sang Hyuck Lee, Xiaohui Xu, Stephen Newhouse, Richard Dobson, Sophia Steer, Andrew P Cope, Hugh S Markus, Cathryn M Lewis, Ian C Scott
Objectives.: To evaluate whether genetic and environmental factors associated with RA in European and Asian ancestry populations are also associated with RA in African ancestry individuals. Methods.: A case-control study was undertaken in 197 RA cases and 868 controls of African ancestry (Black African, Black Caribbean or Black British ethnicity) from South London. Smoking and alcohol consumption data at RA diagnosis was captured. Genotyping was undertaken (Multi-Ethnic Genotyping Array) and human leukocyte antigen (HLA) alleles imputed...
April 12, 2017: Rheumatology
https://www.readbyqxmd.com/read/28384605/simultaneous-quantification-of-11-active-constituents-in-shexiang-baoxin-pill-by-ultraperformance-convergence-chromatography-combined-with-tandem-mass-spectrometry
#10
Chao Lv, Liqing Chen, Peng Fu, Niao Yang, Qun Liu, Yongwei Xu, Qinglong Sun, Rui Li, Changsen Zhan, Weidong Zhang, Runhui Liu
On account of the complexity of chemical constituents of Shexiang Baoxin Pill (SBP), a famous traditional Chinese medicine (TCM) formula, a novel and effective UPC(2)-MS/MS method was developed to simultaneously determine the content of 11 active compounds of SBP with outstanding separation ability. Eleven components in SBP, including 2 ginsenosides, 2 bile acids, 3 bufadienolides and 4 volatiles were detected by electrospray ionization tandem mass spectrometry in positive and negative ion modes with multiple reaction monitor (MRM)...
March 31, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28374869/non-surgical-management-of-chronic-rhinosinusitis-with-nasal-polyps-based-on-clinical-cytological-grading-a-precision-medicine-based-approach
#11
M Gelardi, L Iannuzzi, M De Giosa, S Taliente, N De Candia, N Quaranta, E De Corso, V Seccia, G Ciprandi
Chronic rhinosinusitis with nasal polyps (CRSwNP) is a common inflammatory disorder that strongly impacts patients' quality of life. CRSwNP is still a challenge for ENT specialists due to its unknown pathogenesis, difficult control and frequent relapse. We tested the hypothesis that a new standardised therapeutic approach based on individual clinical-cytological grading (CCG), may improve control of the disease and prevent the needing for surgery. We analysed 204 patients suffering from bilateral CRSwNP, 145 patients of whom regularly assumed therapy, respecting the planned check-up, and were considered cases; 59 patients were not assuming therapy as indicated and were considered as controls...
February 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28353641/rapid-determination-of-30-polyphenols-in-tongmai-formula-a-combination-of-puerariae-lobatae-radix-salviae-miltiorrhizae-radix-et-rhizoma-and-chuanxiong-rhizoma-via-liquid-chromatography-tandem-mass-spectrometry
#12
Fu-Rong Wang, Ying Zhang, Xin-Bao Yang, Chun-Xu Liu, Xiu-Wei Yang, Wei Xu, Jian-Xun Liu
Tongmai formula (TMF) is a herbal preparation composed of three traditional Chinese medicinal materials: Puerariae Lobatae Radix (Gegen), Salviae Miltiorrhizae Radix et Rhizoma (Danshen) and Chuanxiong Rhizoma (Chuanxiong). It has been used to treat cardiovascular diseases for decades. To develop a reliable and convenient analytical method for a comprehensive determination of polyphenols in TMF and the ascertainment of their chemical correlations with its herbal components, a method combining high-performance liquid chromatography with electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS) was developed and validated for rapid determination of 30 polyphenols in TMF and its three herbal components...
March 29, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28343164/a-quantitative-concordance-measure-for-comparing-and-combining-treatment-selection-markers
#13
Zhiwei Zhang, Shujie Ma, Lei Nie, Guoxing Soon
Motivated by an HIV example, we consider how to compare and combine treatment selection markers, which are essential to the notion of precision medicine. The current literature on precision medicine is focused on evaluating and optimizing treatment regimes, which can be obtained by dichotomizing treatment selection markers. In practice, treatment decisions are based not only on efficacy but also on safety, cost and individual preference, making it difficult to choose a single cutoff value for all patients in all settings...
March 25, 2017: International Journal of Biostatistics
https://www.readbyqxmd.com/read/28332849/can-we-determine-sasang-constitutional-body-type-merely-by-facial-inspection
#14
Seung Chul Rhee, Hyo-Sang Bae, Yung-Seop Lee, Rahil Hwang
OBJECTIVES: This study aimed to assess the inter-observer concordance rate of anthroscopic examination on facial features among experts in Sasang constitutional medicine (SCM) in order to evaluate the presence of statistical differences in facial structural characteristics among different body types of Sasang constitution (SC), and to develop an objective method for facial analysis for diagnosing SC types to prevent SCM experts from misdiagnosis by their perceptional errors about faces...
May 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28328502/spatial-statistics-for-segmenting-histological-structures-in-h-e-stained-tissue-images
#15
Luong Nguyen, A Burak Tosun, Jeffrey Fine, Adrian Lee, D Lansing Taylor, Chakra Chennubhotla
Segmenting a broad class of histological structures in transmitted light and/or fluorescence-based images is a prerequisite for determining the pathological basis of cancer, elucidating spatial interactions between histological structures in tumor microenvironments (e.g. tumor infiltrating lymphocytes), facilitating precision medicine studies with deep molecular profiling, and providing an exploratory tool for pathologists. Our paper focuses on segmenting histological structures in hematoxylin and eosin (H&E) stained images of breast tissues, e...
March 16, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28325553/metabolomics-through-the-lens-of-precision-cardiovascular-medicine
#16
REVIEW
Sin Man Lam, Yuan Wang, Bowen Li, Jie Du, Guanghou Shui
Metabolomics, which targets at the extensive characterization and quantitation of global metabolites from both endogenous and exogenous sources, has emerged as a novel technological avenue to advance the field of precision medicine principally driven by genomics-oriented approaches. In particular, metabolomics has revealed the cardinal roles that the environment exerts in driving the progression of major diseases threatening public health. Herein, the existent and potential applications of metabolomics in two key areas of precision cardiovascular medicine will be critically discussed: 1) the use of metabolomics in unveiling novel disease biomarkers and pathological pathways; 2) the contribution of metabolomics in cardiovascular drug development...
March 20, 2017: Journal of Genetics and Genomics, Yi Chuan Xue Bao
https://www.readbyqxmd.com/read/28292692/using-critical-flicker-frequency-in-the-evaluation-of-visual-impairment-in-preeclamptic-women
#17
Marina Maier, Andreas Brückmann, Ekkehard Schleußner, Dietmar Schlembach
OBJECTIVE: To assess critical flicker frequency (CFF) in normal uneventful pregnancy and preeclampsia. STUDY-DESIGN: Case-control observational study at the University Hospital Jena and Outpatient Institute for Prenatal Diagnosis and Preventive Medicine. 25 non-pregnant women, 75 uncomplicated pregnant women in first, second and third trimester, and 15 women with overt preeclampsia. For comparison with preeclamptic patients we matched 15 normal pregnant women (mNP) for age, parity, body mass index, current smoking and family history of cardiovascular disease (CVD)...
March 1, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28290065/does-stress-result-in-you-exercising-less-or-does-exercising-result-in-you-being-less-stressed-or-is-it-both-testing-the-bi-directional-stress-exercise-association-at-the-group-and-person-n-of-1-level
#18
Matthew M Burg, Joseph E Schwartz, Ian M Kronish, Keith M Diaz, Carmela Alcantara, Joan Duer-Hefele, Karina W Davidson
BACKGROUND: Psychosocial stress contributes to heart disease in part by adversely affecting maintenance of health behaviors, while exercise can reduce stress. Assessing the bi-directional relationship between stress and exercise has been limited by lack of real-time data and theoretical and statistical models. This lack may hinder efforts to promote exercise maintenance. PURPOSE: We test the bi-directional relationship between stress and exercise using real-time data for the average person and the variability-individual differences-in this relationship...
March 13, 2017: Annals of Behavioral Medicine: a Publication of the Society of Behavioral Medicine
https://www.readbyqxmd.com/read/28261859/a-phantom-study-to-determine-the-theoretical-accuracy-and-precision-of-radial-mri-to-measure-cross-sectional-area-differences-for-the-application-of-coronary-endothelial-function-assessment
#19
Jérôme Yerly, Danilo Gubian, Jean-Francois Knebel, Ali Schenk, Jerome Chaptinel, Giulia Ginami, Matthias Stuber
PURPOSE: MRI has been used to noninvasively assess coronary endothelial function by measuring the vasoreactivity in response to handgrip exercise. However, the spatial resolution of MRI is limited relative to the expected vasodilation response of healthy coronary arteries (10%-20%), and the sensitivity of MRI to detect such small cross-sectional area differences has yet to be quantitatively examined. METHODS: Holes of different diameters were drilled in a phantom to simulate a range of physiological responses of coronary arteries to stress...
March 5, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28257413/uncovering-precision-phenotype-biomarker-associations-in-traumatic-brain-injury-using-topological-data-analysis
#20
Jessica L Nielson, Shelly R Cooper, John K Yue, Marco D Sorani, Tomoo Inoue, Esther L Yuh, Pratik Mukherjee, Tanya C Petrossian, Jesse Paquette, Pek Y Lum, Gunnar E Carlsson, Mary J Vassar, Hester F Lingsma, Wayne A Gordon, Alex B Valadka, David O Okonkwo, Geoffrey T Manley, Adam R Ferguson
BACKGROUND: Traumatic brain injury (TBI) is a complex disorder that is traditionally stratified based on clinical signs and symptoms. Recent imaging and molecular biomarker innovations provide unprecedented opportunities for improved TBI precision medicine, incorporating patho-anatomical and molecular mechanisms. Complete integration of these diverse data for TBI diagnosis and patient stratification remains an unmet challenge. METHODS AND FINDINGS: The Transforming Research and Clinical Knowledge in Traumatic Brain Injury (TRACK-TBI) Pilot multicenter study enrolled 586 acute TBI patients and collected diverse common data elements (TBI-CDEs) across the study population, including imaging, genetics, and clinical outcomes...
2017: PloS One
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