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https://www.readbyqxmd.com/read/29035190/brain-tumor-epidemiology-in-the-era-of-precision-medicine-the-2017-brain-tumor-epidemiology-consortium-meeting-report
#1
Kimberly J Johnson, Judith Schwartzbaum, Carol Kruchko, Michael E Scheurer, Ching C Lau, Adelheid Woehrer, Johannes A Hainfellner, Joseph Wiemels
The Brain Tumor Epidemiology Consortium (BTEC) is an international consortium that aims to advance the development of multicenter and interdisciplinary collaborations that focus on research related to the etiology, outcomes, and prevention of brain tumors. The 18th annual BTEC meeting was held in Banff, AB, Canada, on June 27 - 29, 2017. The meeting focused on the intersection between epidemiology and precision medicine, that is, the use of molecular indicators of risk, early disease and prognosis or precision epidemiology...
October 16, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/28984192/a-link-prediction-approach-to-cancer-drug-sensitivity-prediction
#2
Turki Turki, Zhi Wei
BACKGROUND: Predicting the response to a drug for cancer disease patients based on genomic information is an important problem in modern clinical oncology. This problem occurs in part because many available drug sensitivity prediction algorithms do not consider better quality cancer cell lines and the adoption of new feature representations; both lead to the accurate prediction of drug responses. By predicting accurate drug responses to cancer, oncologists gain a more complete understanding of the effective treatments for each patient, which is a core goal in precision medicine...
October 3, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28978191/incorporation-of-biological-knowledge-into-the-study-of-gene-environment-interactions
#3
Marylyn D Ritchie, Joe R Davis, Hugues Aschard, Alexis Battle, David Conti, Mengmeng Du, Eleazar Eskin, M Daniele Fallin, Li Hsu, Peter Kraft, Jason H Moore, Brandon L Pierce, Stephanie A Bien, Duncan C Thomas, Peng Wei, Stephen B Montgomery
A growing knowledge base of genetic and environmental information has greatly enabled the study of disease risk factors. However, the computational complexity and statistical burden of testing all variants by all environments has required novel study designs and hypothesis-driven approaches. We discuss how incorporating biological knowledge from model organisms, functional genomics, and integrative approaches can empower the discovery of novel gene-environment interactions and discuss specific methodological considerations with each approach...
October 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28925156/-plant-metabolomics-approach-for-age-discrimination-of-mountain-cultivated-ginseng-using-uplc-q-tof-ms
#4
Xiang-Wei Chang, Bo-Ran Wang, Tong Wang, De-Kun Li, Ying Zhao, Yu-Ling Zhang, Da-Zheng Zhou, Zheng-Liang Ye
Growth year is one of the important factors for the quality of mountain cultivated ginseng (MCG). For age differentiation of MCG, rhizome extracts of ginseng aged from 11 to 15 years were analyzed using a non-targeted approach with ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF/MS)-based on plant metabolomics technique. Multivariate statistical methods such as principal component analysis (PCA) and orthogonal partial least squared discrimination analysis (OPLS-DA) were used to compare the derived patterns among the samples...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28913731/inter-and-intra-observer-reproducibility-of-quantitative-analysis-for-fp-cit-spect-in-patients-with-dlb
#5
Atsutaka Okizaki, Michihiro Nakayama, Kaori Nakajima, Takayuki Katayama, Takahiro Uno, Fumiyoshi Morikawa, Juichiro Naoe, Koji Takahashi
BACKGROUND: Dopamine transporter single photon emission CT (DAT-SPECT) is useful in the evaluation of dementia with Lewy bodies (DLB). The specific binding ratio (SBR) is an index to measure DAT density. However, poorly reproducible cases are occasionally experienced in clinical practice. We hypothesized that distance-weighted histogram (DWH) may be useful to improve the reproducibility of SBR. The purpose of this study was to investigate inter- and intra-observer reproducibility of SBR with conventional and DWH methods, and to visually evaluate the precision in reference voxel of interest (VOI) definition using these methods...
September 14, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28912940/technical-report-on-the-modification-of-3-dimensional-non-contact-human-body-laser-scanner-for-the-measurement-of-anthropometric-dimensions-verification-of-its-accuracy-and-precision
#6
Akram Sadat Jafari Roodbandi, Hamid Naderi, Naser Hashenmi-Nejad, Alireza Choobineh, Mohammad Reza Baneshi, Vafa Feyzi
Introduction: Three-dimensional (3D) scanners are widely used in medicine. One of the applications of 3D scanners is the acquisition of anthropometric dimensions for ergonomics and the creation of an anthropometry data bank. The aim of this study was to evaluate the precision and accuracy of a modified 3D scanner fabricated in this study. Methods: In this work, a 3D scan of the human body was obtained using DAVID Laser Scanner software and its calibration background, a linear low-power laser, and one advanced webcam...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28874934/emergency-physician-performed-transesophageal-echocardiography-in-simulated-cardiac-arrest
#7
Don V Byars, Jordan Tozer, John M Joyce, Michael J Vitto, Lindsay Taylor, Turan Kayagil, Matt Jones, Matthew Bishop, Barry Knapp, David Evans
INTRODUCTION: Transesophageal echocardiography (TEE) is a well-established method of evaluating cardiac pathology. It has many advantages over transthoracic echocardiography (TTE), including the ability to image the heart during active cardiopulmonary resuscitation. This prospective simulation study aims to evaluate the ability of emergency medicine (EM) residents to learn TEE image acquisition techniques and demonstrate those techniques to identify common pathologic causes of cardiac arrest...
August 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28853212/tissue-glycomics-distinguish-tumour-sites-in-women-with-advanced-serous-adenocarcinoma
#8
Merrina Anugraham, Francis Jacob, Arun Vijay Everest-Dass, Andreas Schoetzau, Sheri Nixdorf, Neville F Hacker, Daniel Fink, Viola Heinzelmann-Schwarz, Nicolle H Packer
In the era of precision medicine, the tailoring of cancer treatment is increasingly important as we transition from organ-based diagnosis towards a more comprehensive and patient-centric molecular diagnosis. This is particularly the case for high-grade serous adenocarcinomas of the ovary and peritoneum, which are commonly diagnosed at an advanced stage, and collectively treated and managed similarly. We characterized the N- and O- glycome of serous ovarian (OC) and peritoneal cancer (PC) tissues using PGC-LC-ESI-IT-MS/MS profiling and validated the discriminatory glycans and their corresponding glyco-gene expression levels using cell lines and transcriptomic data from 232 patients...
August 29, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28851658/benzodiazepines-use-and-breast-cancer-risk-a-population-based-study-and-gene-expression-profiling-evidence
#9
Usman Iqbal, Tzu-Hao Chang, Phung-Anh Nguyen, Shabbir Syed-Abdul, Hsuan-Chia Yang, Chih-Wei Huang, Suleman Atique, Wei-Chung Yang, Max Moldovan, Wen-Shan Jian, Min-Huei Hsu, Yun Yen, Yu-Chuan Jack Li
The aim of this study was to investigate whether long-term use of Benzodiazepines (BZDs) is associated with breast cancer risk through the combination of population-based observational and gene expression profiling evidence. We conducted a population-based case-control study by using 1998 to 2009year Taiwan National Health Insurance Research Database and investigated the association between BZDs use and breast cancer risk. We selected subjects age of >20years old and six eligible controls matched for age, sex and the index date (i...
October 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28818163/evaluation-of-ckd-epi-pakistan-equation-for-estimated-glomerular-filtration-rate-egfr-acomparison-of-egfr-prediction-equations-in-pakistani-population
#10
Sibtain Ahmed, Lena Jafri, Aysha Habib Khan
OBJECTIVE: To evaluate the results of 24-hour urinary creatinine clearance (CrCl) with estimated glomerular filtration rate (eGFR) using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), CKD-EPI Pakistan (CKD-EPI Pak), Cockcroft Gault (CG) and 4-variable Modification of Diet in Renal Disease (MDRD) equations. STUDY DESIGN: Descriptive, cross-sectional study. PLACE AND DURATION OF STUDY: Section of Clinical Chemistry, Department of Pathology and Laboratory Medicine, The Aga Khan University, Karachi, from June to October 2013...
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28817531/bias-confounding-and-interaction-lions-and-tigers-and-bears-oh-my
#11
REVIEW
Thomas R Vetter, Edward J Mascha
Epidemiologists seek to make a valid inference about the causal effect between an exposure and a disease in a specific population, using representative sample data from a specific population. Clinical researchers likewise seek to make a valid inference about the association between an intervention and outcome(s) in a specific population, based upon their randomly collected, representative sample data. Both do so by using the available data about the sample variable to make a valid estimate about its corresponding or underlying, but unknown population parameter...
September 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28815099/enabling-comprehension-of-patient-subgroups-and-characteristics-in-large-bipartite-networks-implications-for-precision-medicine
#12
Suresh K Bhavnani, Tianlong Chen, Archana Ayyaswamy, Shyam Visweswaran, Gowtham Bellala, Divekar Rohit, Bassler Kevin E
A primary goal of precision medicine is to identify patient subgroups based on their characteristics (e.g., comorbidities or genes) with the goal of designing more targeted interventions. While network visualization methods such as Fruchterman-Reingold have been used to successfully identify such patient subgroups in small to medium sized data sets, they often fail to reveal comprehensible visual patterns in large and dense networks despite having significant clustering. We therefore developed an algorithm called ExplodeLayout, which exploits the existence of significant clusters in bipartite networks to automatically "explode" a traditional network layout with the goal of separating overlapping clusters, while at the same time preserving key network topological properties that are critical for the comprehension of patient subgroups...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28801740/a-statistical-classifier-to-support-diagnose-meningitis-in-less-developed-areas-of-brazil
#13
Viviane-Maria Lélis, Eduardo Guzmán, María-Victoria Belmonte
This paper describes the development of statistical classifiers to help diagnose meningococcal meningitis, i.e. the most sever, infectious and deadliest type of this disease. The goal is to find a mechanism able to determine whether a patient has this type of meningitis from a set of symptoms that can be directly observed in the earliest stages of this pathology. Currently, in Brazil, a country that is heavily affected by meningitis, all suspected cases require immediate hospitalization and the beginning of a treatment with invasive tests and medicines...
August 11, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28800528/comparison-of-three-officinal-species-of-callicarpa-based-on-a-biochemome-profiling-strategy-with-uhplc-it-ms-and-chemometrics-analysis
#14
Meng-Lu Chen, Wen-Qi Chang, Jian-Liang Zhou, Ying-Hao Yin, Wen-Rui Xia, Jian-Qun Liu, Li-Fang Liu, Gui-Zhong Xin
Traditional Chinese medicine (TCM) materials with closely related species are frequently fungible in clinical use. Therefore, holistic comparison of the composition in bioactive compounds is essential to evaluate whether they are equivalent in efficacy. Taking three officinal species of Callicarpa as a case, we proposed and validated a standardized strategy for the discrimination of closely related TCM materials, which focused on the extraction, profiling and multivariate statistical analysis of their biochemome...
October 25, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28792519/dominance-and-leadership-in-research-activities-collaboration-between-countries-of-differing-human-development-is-reflected-through-authorship-order-and-designation-as-corresponding-authors-in-scientific-publications
#15
Gregorio González-Alcaide, Jinseo Park, Charles Huamaní, José M Ramos
INTRODUCTION: Scientific collaboration is an important mechanism that enables the integration of the least developed countries into research activities. In the present study, we use the order of author signatures and addresses for correspondence in scientific publications as variables to analyze the interactions between countries of very high (VHHD), high (HHD), medium (MHD), and low human development (LHD). METHODOLOGY: We identified all documents published between 2011 and 2015 in journals included in the Science Citation Index-Expanded categories' of Tropical Medicine, Infectious Diseases, Parasitology, and Pediatrics...
2017: PloS One
https://www.readbyqxmd.com/read/28791469/evaluation-of-the-neo-umbilicus-cutaneous-sensitivity-following-abdominoplasty
#16
Mathias Tremp, Wenjin Wang, Carlo M Oranges, Dirk J Schaefer, Wei Wang, Daniel F Kalbermatten
BACKGROUND: Abdominal cutaneous sensitivity loss after abdominoplasty is an undesirable outcome. However, little is known in the literature about sensitivity changes of the neo-umbilicus after abdominoplasty. The aim of this study was to evaluate post-abdominoplasty cutaneous sensitivity of the neo-umbilicus using clinical, quantitative, and reproducible methods. METHODS: Patients who underwent abdominoplasty were included, whereas the control group consisted of healthy volunteers with similar demographic characteristics but who did not undergo abdominoplasty...
August 8, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28789968/b-cell-phenotypes-signaling-and-their-roles-in-secretion-of-antibodies-in-systemic-lupus-erythematosus
#17
Yoshiya Tanaka, Satoshi Kubo, Shigeru Iwata, Maiko Yoshikawa, Shingo Nakayamada
B cells play a pivotal role in the initiation and perpetuation of SLE. Because SLE is molecularly and clinically heterogeneous, efficacious targeted therapy to clinical remission has not yet been established in SLE. We have found i) statistical clustering between Tfh cells and class-switched memory B cells and the upregulated transition from CXCR5(+) IgM memory B cells to CXCR3(+) class-switched memory B cells in SLE by 8-color flow cytometry, ii) the involvement of Syk, Btk and JAK in the activation and differentiation of B cells in SLE, iii) SLE patients was divided to 3 groups based on immunophenotypic analysis and statistical analysis and patients in the Tfh/class-switched B cell-dominant group were most refractory to conventional therapies although 3 groups had similar clinical features...
August 5, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28783764/prognosis-impact-of-clinical-characteristics-in-patients-with-inoperable-esophageal-squamous-cell-carcinoma
#18
Ying Yang, Jun Jia, Zhiwei Sun, Feng Du, Jing Yu, Chuanling Liu, Yanjie Xiao, Xiaodong Zhang
BACKGROUND: Patients with inoperable esophageal squamous cell carcinoma (ESCC) were not homogeneous and their outcomes were widely divergent. There was a lack of identified clinical factors related to prognosis; and there were no previous studies constructing prognosis score to predict survival and guide treatment. METHODS: In this retrospective cohort study, twelve clinical characteristics of one hundred and twenty inoperable ESCC patients were collected at diagnosis and analyzed by Cox regression model...
2017: PloS One
https://www.readbyqxmd.com/read/28759005/bayesian-analysis-of-genetic-association-across-tree-structured-routine-healthcare-data-in-the-uk-biobank
#19
Adrian Cortes, Calliope A Dendrou, Allan Motyer, Luke Jostins, Damjan Vukcevic, Alexander Dilthey, Peter Donnelly, Stephen Leslie, Lars Fugger, Gil McVean
Genetic discovery from the multitude of phenotypes extractable from routine healthcare data can transform understanding of the human phenome and accelerate progress toward precision medicine. However, a critical question when analyzing high-dimensional and heterogeneous data is how best to interrogate increasingly specific subphenotypes while retaining statistical power to detect genetic associations. Here we develop and employ a new Bayesian analysis framework that exploits the hierarchical structure of diagnosis classifications to analyze genetic variants against UK Biobank disease phenotypes derived from self-reporting and hospital episode statistics...
September 2017: Nature Genetics
https://www.readbyqxmd.com/read/28745447/commentary-perspectives-on-alcohol-related-gene-and-environment-interplay-in-diverse-populations
#20
Marcia S Scott
BACKGROUND AND OBJECTIVES: Racial/ethnic groups comprise more than 20% of the U.S. population, but many experience disproportionately high risk for alcohol misuse, often resulting in higher rates of alcohol-associated consequences. Completion of mapping the human genome has launched rapidly evolving research methods aimed at improved understanding of genetic contribution to disease. Despite decades of research on the influence of genetic and environmental risks on alcohol use disorders and outcomes, few studies have included racial/ethnic subpopulations in sufficient numbers to allow for proper statistical analysis...
August 2017: American Journal on Addictions
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