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https://www.readbyqxmd.com/read/28098631/after-the-fall-the-tapestry-of-disturbance-and-recovery
#1
Nalini M Nadkarni
On July 3, 2015, Nalini Nadkarni, a world-renowned ecologist who had been studying the biologic processes of ecosystem disturbance and recovery, sustained a catastrophic 50-foot free-fall from the top of the rainforest canopy to the forest floor at her remote field research site. She lost consciousness in shock and sustained life-threatening injuries. Her accompanying students hiked out, radio-called 911, and the Harborview Medical Center (Seattle) Medivac team arrived 4 hours later to rescue her. Her prognosis was extremely grim; her family gathered in anticipation of her death as she underwent four operations during her 10 days in the ICU...
February 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28095946/electroconvulsive-therapy-ect-for-treating-agitation-in-dementia-major-neurocognitive-disorder-a-promising-option
#2
Oliver M Glass, Brent P Forester, Adriana P Hermida
BACKGROUND: Agitation in patients with dementia increases caretaker burden, increases healthcare costs, and worsens the patient's quality of life. Antipsychotic medications, commonly used for the treatment of agitation in patients with dementia have a box warning from the FDA for elevated mortality risk. Electroconvulsive therapy (ECT) has made significant advances over the past several years, and is efficacious in treating a wide range of psychiatric conditions. We provide a systematic review of published literature regarding the efficacy of ECT for the treatment of agitation in patients with dementia (major neurocognitive disorder)...
January 18, 2017: International Psychogeriatrics
https://www.readbyqxmd.com/read/28090277/anti-quorum-sensing-activity-of-substances-isolated-from-wild-berry-associated-bacteria
#3
Suha M Abudoleh, Adel M Mahasneh
BACKGROUND: Quorum Sensing (QS) is a mechanism used by bacteria to determine their physiological activities and coordinate gene expression based on cell to cell signaling. Many bacterial physiological functions are under the regulation of quorum sensing such as virulence, luminescence, motility, sporulation and biofilm formation. The aim of the present study was to isolate and characterize Quorum Sensing Inhibitory (QSI) substances from epiphytic bacteria residing on wild berries surfaces...
January 2017: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/28087102/feature-selection-for-outcome-prediction-in-oesophageal-cancer-using-genetic-algorithm-and-random-forest-classifier
#4
Desbordes Paul, Ruan Su, Modzelewski Romain, Vauclin Sébastien, Vera Pierre, Gardin Isabelle
The outcome prediction of patients can greatly help to personalize cancer treatment. A large amount of quantitative features (clinical exams, imaging, …) are potentially useful to assess the patient outcome. The challenge is to choose the most predictive subset of features. In this paper, we propose a new feature selection strategy called GARF (genetic algorithm based on random forest) extracted from positron emission tomography (PET) images and clinical data. The most relevant features, predictive of the therapeutic response or which are prognoses of the patient survival 3 years after the end of treatment, were selected using GARF on a cohort of 65 patients with a local advanced oesophageal cancer eligible for chemo-radiation therapy...
December 28, 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
https://www.readbyqxmd.com/read/28068946/ct-characteristics-of-non-small-cell-lung-cancer-with-epidermal-growth-factor-receptor-mutation-a-systematic-review-and-meta-analysis
#5
Zenghui Cheng, Fei Shan, Yuesong Yang, Yuxin Shi, Zhiyong Zhang
BACKGROUND: To systematically investigate the relationship between CT morphological features and the presence of epidermal growth factor receptor (EGFR) mutations in non-small cell lung cancer (NSCLC). METHODS: All studies about the CT morphological features of NSCLC with EGFR mutations published between January 1, 2000 and March 15, 2015 were searched in the PubMed and EMBASE databases. Qualified studies were selected according to inclusion criteria. The frequency of EGFR mutations and CT features of ground-glass opacity (GGO) content, tumor size, cavitation, air-bronchogram, lobulation, and spiculation were extracted...
January 10, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28057002/prediction-of-anti-inflammatory-proteins-peptides-an-insilico-approach
#6
Sudheer Gupta, Ashok K Sharma, Vibhuti Shastri, Midhun K Madhu, Vineet K Sharma
BACKGROUND: The current therapy for inflammatory and autoimmune disorders involves the use of nonspecific anti-inflammatory drugs and other immunosuppressant, which are often accompanied with potential side effects. As an alternative therapy, anti-inflammatory peptides are recently being exploited as anti-inflammatory agents for treatment of various inflammatory diseases such as Alzheimer's disease and rheumatoid arthritis. Thus, understanding the correlation between amino acid sequence and its potential anti-inflammatory property is of great importance for the discovery of novel and efficient anti-inflammatory peptide-based therapeutics...
January 6, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28052106/a-prediction-algorithm-for-drug-response-in-patients-with-mesial-temporal-lobe-epilepsy-based-on-clinical-and-genetic-information
#7
Mariana S Silva-Alves, Rodrigo Secolin, Benilton S Carvalho, Clarissa L Yasuda, Elizabeth Bilevicius, Marina K M Alvim, Renato O Santos, Claudia V Maurer-Morelli, Fernando Cendes, Iscia Lopes-Cendes
Mesial temporal lobe epilepsy is the most common form of adult epilepsy in surgical series. Currently, the only characteristic used to predict poor response to clinical treatment in this syndrome is the presence of hippocampal sclerosis. Single nucleotide polymorphisms (SNPs) located in genes encoding drug transporter and metabolism proteins could influence response to therapy. Therefore, we aimed to evaluate whether combining information from clinical variables as well as SNPs in candidate genes could improve the accuracy of predicting response to drug therapy in patients with mesial temporal lobe epilepsy...
2017: PloS One
https://www.readbyqxmd.com/read/28047834/su-c-bra-04-automated-segmentation-of-head-and-neck-ct-images-for-radiotherapy-treatment-planning-via-multi-atlas-machine-learning-maml
#8
X Ren, G Sharp, H Gao
PURPOSE: Accurate image segmentation is a crucial step during image guided radiation therapy. This work proposes multi-atlas machine learning (MAML) algorithm for automated segmentation of head-and-neck CT images. METHODS: As the first step, the algorithm utilizes normalized mutual information as similarity metric, affine registration combined with multiresolution B-Spline registration, and then fuses together using the label fusion strategy via Plastimatch. As the second step, the following feature selection strategy is proposed to extract five feature components from reference or atlas images: intensity (I), distance map (D), box (B), center of gravity (C) and stable point (S)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046236/su-d-204-06-integration-of-machine-learning-and-bioinformatics-methods-to-analyze-genome-wide-association-study-data-for-rectal-bleeding-and-erectile-dysfunction-following-radiotherapy-in-prostate-cancer
#9
J Oh, S Kerns, H Ostrer, B Rosenstein, J Deasy
PURPOSE: We investigated whether integration of machine learning and bioinformatics techniques on genome-wide association study (GWAS) data can improve the performance of predictive models in predicting the risk of developing radiation-induced late rectal bleeding and erectile dysfunction in prostate cancer patients. METHODS: We analyzed a GWAS dataset generated from 385 prostate cancer patients treated with radiotherapy. Using genotype information from these patients, we designed a machine learning-based predictive model of late radiation-induced toxicities: rectal bleeding and erectile dysfunction...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28035112/the-incidence-of-borrelia-burgdorferi-anaplasma-phagocytophilum-and-babesia-microti-coinfections-among-foresters-and-farmers-in-eastern-poland
#10
Anna Pañczuk, Małgorzata Tokarska-Rodak, Maria Kozioł-Montewka, Dorota Plewik
BACKGROUND & OBJECTIVES: Lyme borreliosis is the most common tick-borne disease in Europe and the USA. However, a great variety of pathogens are transmitted by ticks, which results in mixed infections, with Lyme borreliosis. The aim of the present study was to show the incidence of Borrelia burgdorferi, Anaplasma phagocytophilum, and Babesia microti coinfections among the population of foresters and farmers, as these people, due to their profession, are particularly exposed to tick contact...
October 2016: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/27992346/prediction-of-hiv-drug-resistance-by-combining-sequence-and-structural-properties
#11
Zoya Khalid, Osman Ugur Sezerman
Drug resistance is a major obstacle faced by therapist in treating HIV infected patients. The reason behind these phenomena is either protein mutation or the changes in gene expression level that induces resistance to drug treatments. These mutations affect the drug binding activity, hence resulting in failure of treatment. Therefore, it is necessary to conduct resistance testing in order to carry out HIV effective therapy. This study combines both sequence and structural features for predicting HIV resistance by applying SVM and Random Forests classifiers...
December 13, 2016: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/27960206/role-of-atypical-pathogens-in-the-etiology-of-community-acquired-pneumonia
#12
Forest W Arnold, James T Summersgill, Julio A Ramirez
Atypical pneumonia has been described for over 100 years, but some of the pathogens attributed to it have been identified only in the past decades. The most common pathogens are Chlamydia pneumoniae, Mycoplasma pneumoniae, and Legionella pneumophila. The epidemiology and pathophysiology of these three pathogens have been studied since their discovery, and are reviewed herein to provide better insight when evaluating these patients, which hopefully translates into improved care. The incidence of atypical pathogens has been shown to be approximately 22% worldwide, but this probably varies with location...
December 2016: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27943270/a-genetic-risk-score-is-significantly-associated-with-statin-therapy-response-in-the-elderly-population
#13
D M Ciuculete, M Bandstein, C Benedict, G Waeber, P Vollenweider, L Lind, H B Schiöth, J Mwinyi
The ability of statins to strongly reduce low-density lipoprotein cholesterol (LDL-C) varies interindividually and is partially influenced by genetic variants. Based on a comprehensive analysis of 23 single nucleotide polymorphisms (SNPs) known to be associated with pharmacokinetics and dynamics of statins, we developed a genetic risk score to study its impact on the therapy outcome in elderly individuals under at least 5 years statin therapy. The study was performed in a population-based cohort of 1016 elderly individuals, which comprised 168 statin users investigated at age 75 and 80...
October 13, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27928779/how-antibiotics-should-be-prescribed-to-hospitalized-elderly-patients-with-community-acquired-pneumonia
#14
Forest W Arnold
Elderly patients hospitalized with community-acquired pneumonia (CAP) should be administered antimicrobials in the emergency department prior to transfer to the ward or intensive care unit (ICU). For ward patients, a β-lactam with a macrolide or a respiratory fluoroquinolone alone should be given to cover typical and atypical pathogens. For ICU patients, a β-lactam with either a macrolide or a fluoroquinolone should be given. Other regimens are indicated if methicillin-resistant Staphylococcus aureus or Pseudomonas aeruginosa is a concern...
January 2017: Drugs & Aging
https://www.readbyqxmd.com/read/27926756/cutting-and-decellularization-of-multiple-corneal-stromal-lamellae-for-the-bioengineering-of-endothelial-grafts
#15
Zhiguo He, Fabien Forest, Aurélien Bernard, Anne-Sophie Gauthier, Romain Montard, Michel Peoc'h, Clotilde Jumelle, Emilie Courrier, Chantal Perrache, Philippe Gain, Gilles Thuret
Purpose: Engineered corneal endothelial grafts able to provide numerous functional endothelial cells for the restoration of corneal transparency would be a worthwhile way of replacing donor tissue, which is extremely scarce. The grafts are simply constructed: a biocompatible thin and transparent carrier colonized by a monolayer of cultured endothelial cells (ECs). Here we describe a process able to obtain appropriate carriers by recycling human corneas unsuitable for graft in their original state, but liable to provide multiple thin lamellae when cut with a femtosecond laser as used in refractive surgery...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27921065/rapidly-progressive-muscle-paralysis-and-acute-respiratory-failure-following-endoscopic-botulinum-toxin-injection
#16
Geoffrey You, Ahmed Khan, Julia Shor, Gary P Forester
Botulism toxin injection (BTI) is a well-known and relatively safe endoscopic treatment for achalasia. We report a case of a 90-year-old female diagnosed with achalasia who subsequently underwent BTI with symptomatic relief. The therapy was complicated by systemic botulism, however, leading to progressive muscle paralysis with diaphragmatic involvement requiring mechanical ventilation support. This is the first reported case of BTI for achalasia causing systemic botulism.
August 2016: ACG Case Reports Journal
https://www.readbyqxmd.com/read/27905172/recommendations-for-pathologic-staging-ptnm-of-cancer-of-the-esophagus-and-esophagogastric-junction-for-the-8th-edition-ajcc-uicc-staging-manuals
#17
T W Rice, H Ishwaran, W L Hofstetter, D P Kelsen, C Apperson-Hansen, E H Blackstone
We report analytic and consensus processes that produced recommendations for pathologic stage groups (pTNM) of esophageal and esophagogastric junction cancer for the AJCC/UICC cancer staging manuals, 8th edition. The Worldwide Esophageal Cancer Collaboration provided data for 22,654 patients with epithelial esophageal cancers; 13,300 without preoperative therapy had pathologic assessment after esophagectomy or endoscopic treatment. Risk-adjusted survival for each patient was developed using random survival forest analysis to identify data-driven pathologic stage groups wherein survival decreased monotonically with increasing group, was distinctive between groups, and homogeneous within groups...
November 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27905170/recommendations-for-neoadjuvant-pathologic-staging-yptnm-of-cancer-of-the-esophagus-and-esophagogastric-junction-for-the-8th-edition-ajcc-uicc-staging-manuals
#18
Thomas W Rice, Hemant Ishwaran, David P Kelsen, Wayne L Hofstetter, Carolyn Apperson-Hansen, Eugene H Blackstone
We report analytic and consensus processes that produced recommendations for neoadjuvant pathologic stage groups (ypTNM) of esophageal and esophagogastric junction cancer for the AJCC/UICC cancer staging manuals, 8th edition. The Worldwide Esophageal Cancer Collaboration provided data for 22,654 patients with epithelial esophageal cancers; 7,773 had pathologic assessment after neoadjuvant therapy. Risk-adjusted survival for each patient was developed. Random forest analysis identified data-driven neoadjuvant pathologic stage groups wherein survival decreased monotonically with increasing group, was distinctive between groups, and homogeneous within groups...
November 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27903285/prognostic-biomarkers-to-identify-patients-destined-to-develop-severe-crohn-s-disease-who-may-benefit-from-early-biological-therapy-protocol-for-a-systematic-review-meta-analysis-and-external-validation
#19
Steve Halligan, Darren Boone, Gauraang Bhatnagar, Tariq Ahmad, Stuart Bloom, Manuel Rodriguez-Justo, Stuart A Taylor, Susan Mallett
BACKGROUND: It is believed increasingly that patients with severe Crohn's disease are best treated early with biological therapy, which may ameliorate subsequent disease course and diminish long-term complications. However, we cannot predict currently which new presentations of Crohn's disease are destined to develop severe disease so treatment cannot be targeted to the most appropriate patients. Accordingly, via systematic review and meta-analysis we aim to identify if biomarkers of disease activity are able to predict development of severe disease...
December 1, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27893926/estimation-of-the-optimal-regime-in-treatment-of-prostate-cancer-recurrence-from-observational-data-using-flexible-weighting-models
#20
Jincheng Shen, Lu Wang, Jeremy M G Taylor
Prostate cancer patients are closely followed after the initial therapy and salvage treatment may be prescribed to prevent or delay cancer recurrence. The salvage treatment decision is usually made dynamically based on the patient's evolving history of disease status and other time-dependent clinical covariates. A multi-center prostate cancer observational study has provided us data on longitudinal prostate specific antigen (PSA) measurements, time-varying salvage treatment, and cancer recurrence time. These data enable us to estimate the best dynamic regime of salvage treatment, while accounting for the complicated confounding of time-varying covariates present in the data...
November 28, 2016: Biometrics
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