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https://www.readbyqxmd.com/read/28922885/patient-selection-and-clinical-efficacy-of-urgent-superficial-temporal-artery-middle-cerebral-artery-bypass-in-acute-ischemic-stroke-using-advanced-magnetic-resonance-imaging-techniques
#1
Hyun-Seok Park, Sang-Hyeon Kim, Hyun-Wook Nah, Jae-Hyung Choi, Dae-Hyun Kim, Myong-Jin Kang, Jae-Kwan Cha, Jae-Taeck Huh
BACKGROUND: Selected patients with acute ischemic stroke might benefit from superficial temporal artery-middle cerebral artery (STA-MCA) bypass, but the indications for urgent STA-MCA bypass are unknown. OBJECTIVE: To report our experiences of urgent STA-MCA bypass in patients requiring urgent reperfusion who were ineligible for other reperfusion therapies, using advanced magnetic resonance imaging (MRI) techniques. METHODS: The inclusion criteria for urgent STA-MCA bypass were as follows: acute infarct volume <70 mL with a ratio of perfusion/diffusion lesion volume ≥1...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28922838/comparative-genomics-of-a-drug-resistant-pseudomonas-aeruginosa-panel-and-the-challenges-of-antimicrobial-resistance-prediction-from-genomes
#2
J Jeukens, I Kukavica-Ibrulj, J G Emond-Rheault, L Freschi, R C Levesque
Antimicrobial resistance (AMR) is now recognized as a global threat to human health. The accessibility of microbial whole-genome sequencing offers an invaluable opportunity for resistance surveillance via the resistome, i.e. the genes and mutations underlying AMR. Unfortunately, AMR prediction from genomic data remains extremely challenging, especially for species with a large pan-genome. One such organism, for which multidrug-resistant (MDR) isolates are frequently encountered in the clinic, is Pseudomonas aeruginosa...
October 2, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/28922790/the-balance-between-cytotoxic-t-cell-lymphocytes-and-immune-checkpoint-expression-in-the-prognosis-of-colon-tumors
#3
Laetitia Marisa, Magali Svrcek, Ada Collura, Etienne Becht, Pascale Cervera, Kristell Wanherdrick, Olivier Buhard, Anastasia Goloudina, Vincent Jonchère, Janick Selves, Gerard Milano, Dominique Guenot, Romain Cohen, Chrystelle Colas, Pierre Laurent-Puig, Sylviane Olschwang, Jérémie H Lefèvre, Yann Parc, Valérie Boige, Côme Lepage, Thierry André, Jean-François Fléjou, Valentin Dérangère, François Ghiringhelli, Aurélien de Reynies, Alex Duval
Background: Immune checkpoint (ICK) expression might represent a surrogate measure of tumor-infiltrating T cell (CTL) exhaustion and therefore be a more accurate prognostic biomarker for colorectal cancer (CRC) patients than CTL enumeration as measured by the Immunoscore. Methods: The expression of ICKs, Th1, CTLs, cytotoxicity-related genes, and metagenes, including Immunoscore-like metagenes, were evaluated in three independent cohorts of CRC samples (260 microsatellite instable [MSI], 971 non-MSI)...
January 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28922786/relapse-free-survival-as-a-surrogate-for-overall-survival-in-the-evaluation-of-stage-ii-iii-melanoma-adjuvant-therapy
#4
Stefan Suciu, Alexander M M Eggermont, Paul Lorigan, John M Kirkwood, Svetomir N Markovic, Claus Garbe, David Cameron, Srividya Kotapati, Tai-Tsang Chen, Keith Wheatley, Natalie Ives, Gaetan de Schaetzen, Achmad Efendi, Marc Buyse
Background: We assessed whether relapse-free survival (RFS; time until recurrence/death) is a valid surrogate for overall survival (OS) among resected stage II-III melanoma patients through a meta-analysis of randomized controlled trials. Methods: Individual patient data (IPD) on RFS and OS were collected from 5826 patients enrolled in 11 randomized adjuvant trials comparing interferon (IFN) to observation. In addition, IPD from two studies comparing IFN and vaccination in 989 patients were included...
January 1, 2018: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/28922747/allelic-variation-of-ntnramp5-associated-with-cultivar-variation-in-cadmium-accumulation-in-tobacco
#5
Zhong Tang, Hailin Cai, Jie Li, Yanling Lv, Wenwen Zhang, Fang-Jie Zhao
Tobacco (Nicotiana tabacum) is a cadmium (Cd) accumulator, and smoking is a major source of Cd exposure. In the present study, we identified two tobacco cultivars with contrasting phenotypes of Cd and manganese (Mn) accumulation in both hydroponic and soil pot experiments. Physiological experiments showed that the two cultivars differed in Cd uptake, but not in Cd translocation from roots to shoots. A homolog of OsNramp5 (natural resistance-associated macrophage protein 5), NtNramp5, was isolated from both cultivars...
September 1, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28922735/assessing-the-interplay-of-childhood-adversities-with-more-recent-stressful-life-events-and-conditions-in-predicting-panic-pathology-among-adults-from-the-general-population
#6
E Asselmann, J Stender, H J Grabe, J König, C O Schmidt, A O Hamm, C A Pané-Farré
BACKGROUND: Although research suggests that (a) childhood adversities and more recent stressful life events/conditions are risk factors for panic pathology and that (b) early life stress increases vulnerability to later psychopathology, it remains unclear whether childhood adversities amplify the association between more recent stressful life events/conditions and panic pathology. METHODS: Data were derived from a general population sample (Study of Health in Pomerania, SHIP)...
August 24, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28922733/assessing-the-ground-vibrations-produced-by-a-heavy-vehicle-traversing-a-traffic-obstacle
#7
Loïc Ducarne, Daniel Ainalis, Georges Kouroussis
Despite advancements in alternative transport networks, road transport remains the dominant mode in many modern and developing countries. The ground-borne motions produced by the passage of a heavy vehicle over a geometric obstacle (e.g. speed hump, train tracks) pose a fundamental problem in transport annoyance in urban areas. In order to predict the ground vibrations generated by the passage of a heavy vehicle over a geometric obstacle, a two-step numerical model is developed. The first step involves simulating the dynamic loads generated by the heavy vehicle using a multibody approach, which includes the tyre-obstacle-ground interaction...
September 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28922711/current-updates-on-micrornas-as-regulators-of-chemoresistance
#8
REVIEW
Metin Çalışkan, Hale Güler, Vildan Bozok Çetintaş
Resistance to chemotherapeutics including platinum agents, nucleoside analogues, topoisomerase and microtubule inhibitors is the most important problem in the treatment of many cancer. Several resistance mechanisms has been described for each group and researchers have been trying to develop new approaches to overcome chemoresistance. miRNAs are the regulators of gene transcription at the post-transcriptional level. Dysregulated miRNAs have been reported in cancer tumorigenesis, diagnosis and prognosis and they are promising new therapeutic approaches to improve diagnosis and predictions of outcomes and response to chemotherapy...
September 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28922685/neoadjuvant-systemic-therapy-for-breast-cancer-the-westmead-experience
#9
Annelise M Cocco, David Messer, Alexander Brown, Nina Sriram, Jenny Gilchrist, Loma Al-Mansouri, Richard Kefford, Farid Meybodi, James French, Jeremy Hsu, Elisabeth Elder
BACKGROUND: Neoadjuvant systemic therapy (NAST) can be used to treat breast cancer. Pathologic complete response (pCR) is a surrogate marker for improved survival. This study examined response in the breast and axilla to NAST and identified features associated with pCR. METHODS: Patients undergoing NAST and surgery between January 2012 and June 2016 by surgeons at Westmead Breast Cancer Institute were identified. Patients with inflammatory or metastatic disease were excluded...
September 18, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28922678/serum-uric-acid-concentrations-can-predict-hypertension-a-longitudinal-population-based-epidemiological-study
#10
Rongjiong Zheng, Tianmeng Yang, Qingmei Chen, Changxi Chen, Yushan Mao
An elevated serum uric acid concentration may be associated with hypertension, which is the leading cause of death worldwide. However, whether the elevation is causal or a consequence of hypertension among the Chinese population remains unclear. This study was designed to investigate the longitudinal relationship between the serum uric acid concentrations and hypertension among Chinese individuals. This study included 5105 subjects, initially without hypertension, who were followed up for 9 years. The subjects were divided into four groups based on the serum uric acid quartile...
September 18, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28922667/integrated-strategy-for-mutagenicity-prediction-applied-to-food-contact-chemicals
#11
Serena Manganelli, Benoît Schilter, Emilio Benfenati, Alberto Manganaro, Elena Lo Piparo
Food contamination due to unintentional leakage of chemicals from food contact materials (FCM) is a source of increasing concern. Since for many of these substances, only limited or no toxicological data are available, the development of alternative methodologies to establish rapidly and cost-efficiently level of safety concern is critical to ensure adequate consumer protection. Computational toxicology methods are considered the most promising solutions to cope with this data gap. In particular, mutagenicity assessment has a particular relevance and is a mandatory requirement for all substances released from plastic FCM, regardless how low migration and exposure are...
September 18, 2017: ALTEX
https://www.readbyqxmd.com/read/28922664/patchy-particles-made-by-colloidal-fusion
#12
Zhe Gong, Theodore Hueckel, Gi-Ra Yi, Stefano Sacanna
Patches on the surfaces of colloidal particles provide directional information that enables the self-assembly of the particles into higher-order structures. Although computational tools can make quantitative predictions and can generate design rules that link the patch motif of a particle to its internal microstructure and to the emergent properties of the self-assembled materials, the experimental realization of model systems of particles with surface patches (or 'patchy' particles) remains a challenge. Synthetic patchy colloidal particles are often poor geometric approximations of the digital building blocks used in simulations and can only rarely be manufactured in sufficiently high yields to be routinely used as experimental model systems...
September 18, 2017: Nature
https://www.readbyqxmd.com/read/28922609/serum-proteomic-variability-associated-with-clinical-phenotype-in-familial-transthyretin-amyloidosis-attrm
#13
Gloria G Chan, Clarissa M Koch, Lawreen H Connors
Transthyretin (TTR), normally a plasma circulating protein, can become misfolded and aggregated, ultimately leading to extracellular deposition of amyloid fibrils usually targeted to heart or nerve tissues. Referred to as TTR-associated amyloidoses (ATTR), this group of diseases is frequently life threatening and fatal if untreated. ATTR, caused by amyloid-forming variant TTR proteins (ATTRm) which arise from point mutations in the TTR gene, were classically referred to as familial amyloid cardiomyopathy (FAC) or familial amyloid polyneuropathy (FAP) reflecting the clinical phenotype...
September 18, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28922600/ptml-model-for-proteome-mining-of-b-cell-epitopes-and-theoretic-experimental-study-of-bm86-protein-sequences-from-colima-mexico
#14
Saúl Gabriel Martínez, Esvieta Tenorio-Borroto, Alberto Barbabosa Pliego, Hector Diaz-Albiter, Juan C Vazquez-Chagoyan, Humbert Gonzalez-Diaz
In this work, we developed a general Perturbation Theory and Machine Learning (PTML) method for data mining of proteomes, in order to discover new B-cell epitopes useful for vaccine design. The method predicts the epitope activity εq(cqj) of one query peptide (q-peptide) in a set of experimental query conditions (cqj). The method uses as input the sequence of the q-peptide. The method also uses as input information about the sequence and epitope activity εr(crj) of a peptide of reference (r-peptide) assayed on similar experimental conditions (crj)...
September 18, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28922596/privileged-substructures-to-modulate-protein-protein-interactions
#15
Nicolas Bosc, Mélaine A Kuenemann, Jérome Bécot, Marek Vavrusa, Adrien H Cerdan, Olivier Sperandio
Given the difficulties to identify chemical probes that can modulate protein-protein interactions (PPIs), actors in the field start to agree on the necessity to use PPI-tailored screening chemical collections. However, which type of scaffolds may promote the binding of compounds to PPI targets remains unclear. In this big data analysis, we have identified a list of privileged chemical substructures that are most often observed within inhibitors of PPIs. Using molecular frameworks as a way to perceive chemical substructures with the combination of an experimental and a machine-learning based predicted dataset of iPPI compounds, we propose a list of privileged substructures in the form of scaffolds and chemical moieties that can be substantially chemically functionalized and do not present any toxicophore nor Pan-assay interference (PAINS) alerts...
September 18, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/28922591/baseline-characteristics-and-early-response-at-week-1-predict-treatment-outcome-in-adolescents-with-bipolar-manic-or-mixed-episode-treated-with-olanzapine-results-from-a-3-week-randomized-placebo-controlled-trial
#16
Le Xiao, Stephen J Ganocy, Robert L Findling, Kiki Chang, Melissa P DelBello, John M Kane, Mauricio Tohen, Yu-Tao Xiang, Christoph U Correll
BACKGROUND: Early predictors of response and remission in pediatric mania are lacking, requiring further study. METHODS: This was a post hoc analysis of a 3-week, randomized, placebo-controlled trial of olanzapine conducted between November 2002 and May 2005 in 161 adolescents aged 13-17 years who were diagnosed with a DSM-IV acute manic or mixed episode of bipolar I disorder. Data from the olanzapine arm were analyzed to investigate the predictive power of early response or early nonresponse (≥25% or < 25% reduction in Young Mania Rating Scale [YMRS] score, respectively) at week 1 for ultimate response or nonresponse (≥ 50% or < 50% reduction in YMRS score, respectively) and for remission (YMRS total score ≤ 12 [standard definition] or ≤ 8 [stringent definition]) at week 3...
September 5, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28922589/higher-baseline-proinflammatory-cytokines-mark-poor-antidepressant-response-in-bipolar-disorder
#17
Francesco Benedetti, Sara Poletti, Thomas A Hoogenboezem, Clara Locatelli, Harm de Wit, Annemarie J M Wijkhuijs, Cristina Colombo, Hemmo A Drexhage
BACKGROUND: The clinical relevance of raised levels of circulating cytokines in bipolar disorder is still unclear. Cytokines influence neurotransmitters, neuroplasticity, and white matter integrity. An inconsistent literature suggests that higher cytokine levels could hamper antidepressant response. Total sleep deprivation (TSD) and light therapy (LT) prompt a rapid antidepressant response and can provide a model treatment to study predictors of response. METHODS: We studied at baseline 15 immune-regulating compounds in 37 consecutively admitted inpatients with a major depressive episode in the course of bipolar disorder (DSM-5 criteria) and in 24 controls...
September 12, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28922585/climatic-and-anthropogenic-drivers-of-northern-amazon-fires-during-the-2015-2016-el-ni%C3%A3-o-event
#18
Marisa G Fonseca, Liana O Anderson, Egidio Arai, Yosio E Shimabukuro, Haron A M Xaud, Maristela R Xaud, Nima Madani, Fabien H Wagner, Luiz E O C Aragão
The strong El Niño Southern Oscillation (ENSO) event that occurred in 2015/2016 caused extreme drought in the northern Brazilian Amazon, especially in the state of Roraima, increasing fire occurrence. Here we map the extent of precipitation and fire anomalies and quantify the effects of climatic and anthropogenic drivers on fire occurrence during the 2015/2016 dry season (from December 2015 to March 2016) in the state of Roraima. To achieve these objectives we first estimated the spatial pattern of precipitation anomalies, based on long-term data from the TRMM (Tropical Rainfall Measuring Mission), and the fire anomaly, based on MODIS (Moderate Resolution Imaging Spectroradiometer) active fire detections during the referred period...
September 18, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28922579/evaluating-real-time-effects-of-topical-1-1000-epinephrine-in-endoscopic-sinus-and-skull-base-surgery-on-hemodynamic-parameters-through-intraoperative-arterial-line-monitoring
#19
Michael T Yim, Omar G Ahmed, Masayoshi Takashima
BACKGROUND: Administration of topical 1:1000 epinephrine is commonly used in practice to achieve vasoconstriction during endoscopic sinus surgery and skull-base surgery; however, real-time effects on cardiovascular changes from systemic absorption have not been well studied. METHODS: Twenty-six patients undergoing endoscopic transsphenoidal resection of a pituitary lesion at a single institution were included into the study. Following arterial line placement by anesthesiology, 6 cottonoid pledgets soaked in 1:1000 epinephrine were placed into the bilateral nasal passages...
September 18, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28922557/disease-prevalence-dependent-failure-rate-in-diagnostic-management-studies-on-suspected-deep-vein-thrombosis-communication-from-the-ssc-of-the-isth
#20
C E A Dronkers, Y M Ende-Verhaar, P A Kyrle, M Righini, S C Cannegieter, M V Huisman, F A Klok
No abstract text is available yet for this article.
August 20, 2017: Journal of Thrombosis and Haemostasis: JTH
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