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https://www.readbyqxmd.com/read/28645181/the-clinical-benefits-of-perioperative-antioxidant-vitamin-therapy-in-patients-undergoing-cardiac-surgery-a-meta-analysis
#1
Jun Geng, Ju Qian, Weijun Si, Hao Cheng, Fuhai Ji, Zhenya Shen
The clinical benefits of perioperative antioxidant vitamin therapy in cardiac patients remain controversial. Here, we conducted a meta-analysis to determine the strength of the evidence supporting the perioperative use of antioxidant vitamins in patients undergoing cardiac surgery. We searched 4 databases (PubMed, EMBASE, Science Citation Index and Cochrane Library) for randomized controlled trials that reported the effects of antioxidant vitamin therapy on patients undergoing cardiac surgery until 6 June 2016...
June 22, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28645180/alcohol-metabolism-and-oesophageal-cancer-a-systematic-review-of-the-evidence
#2
Marco Matejcic, M J Gunter, Pietro Ferrari
Alcohol is a major risk factor for oesophageal squamous cell carcinoma (OSCC), the most prevalent histological subtype of oesophageal cancer (OC) worldwide. The metabolism of alcohol is regulated by specific enzymes whose activity and expression is influenced by genetic polymorphisms. We conducted a systematic review of current epidemiological evidence of the relationship between alcohol intake and OC risk, including the role of tobacco smoking and functional polymorphisms of dehydrogenases (ADHs) and aldehyde dehydrogenases (ALDHs)...
June 22, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28645163/variations-in-chloroplast-movement-and-chlorophyll-fluorescence-among-chloroplast-division-mutants-under-light-stress
#3
Siddhartha Dutta, Jeffrey A Cruz, Saif M Imran, Jin Chen, David M Kramer, Katherine W Osteryoung
Chloroplasts divide to maintain consistent size, shape, and number in leaf mesophyll cells. Altered expression of chloroplast division proteins in Arabidopsis results in abnormal chloroplast morphology. To better understand the influence of chloroplast morphology on chloroplast movement and photosynthesis, we compared the chloroplast photorelocation and photosynthetic responses of a series of Arabidopsis chloroplast division mutants with a wide variety of chloroplast phenotypes. Chloroplast movement was monitored by red light reflectance imaging of whole plants under increasing intensities of white light...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645101/co-localization-of-endogenous-arf6-and-its-activator-efa6d-in-the-granular-convoluted-tubule-cells-of-mouse-submandibular-glands-under-normal-conditions-and-when-stimulated-by-isoproterenol-noradrenaline-and-carbachol
#4
Apussara Tachow, Wipawee Thoungseabyoun, Laorrat Phuapittayalert, Kanoktip Petcharat, Hiroyuki Sakagami, Hisatake Kondo, Wiphawi Hipkaeo
OBJECTIVE: This study proposed to investigate the localization at light and electron microscopic levels of Arf6 and its activator EFA6D in the mouse submandibular gland (SMG) under normal conditions and when stimulated by adrenergic or cholinergic agonists. MATERIALS AND METHODS: SMGs of male adult mice were utilized for immunoblotting and immuno-light and -electron microscopic analyses. Isoproterenol and noradrenalin were used as adrenergics, while carbachol was used for the cholinergic stimulant...
June 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28645094/quality-assessment-of-shoulder-plyometric-exercises-examining-the-relationship-to-scapular-muscle-activity
#5
Maya Calé-Benzoor, Annelies Maenhout, Michal Arnon, Gershon Tenenbaum, Mia Werrin, Ann Cools
OBJECTIVES: The purpose of the study was to evaluate performance quality of shoulder plyometric exercises, and examine the relationship to scapular muscle activation during an intense exercise bout. DESIGN: Observational study. SETTING: University laboratory. PARTICIPANTS: 32 healthy university students (male/female: 14/18) volunteers. MAIN OUTCOME MEASURES: Subjects performed 10 plyometric exercises...
May 12, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28645081/loudness-and-time-dependence-of-auditory-evoked-potentials-is-blunted-by-the-nmda-channel-blocker-mk-801
#6
Tobias Teichert
Amplitudes of auditory evoked potentials (AEP) increase with the intensity/loudness of sounds (loudness-dependence of AEP, LDAEP), and the time between adjacent sounds (time-dependence of AEP, TDAEP). Both, blunted LDAEP and blunted TDAEP are markers of altered auditory function in schizophrenia (SZ). However, while blunted LDAEP has been attributed to altered serotonergic function, blunted TDAEP has been linked to altered NMDA receptor function. Despite phenomenological similarities of the two effects, no common pharmacological underpinnings have been identified...
June 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28645033/acetic-acid-assisted-fabrication-of-hierarchical-flower-like-bi2o3-for-photocatalytic-degradation-of-sulfamethoxazole-and-rhodamine-b-under-solar-irradiation
#7
Yueping Bao, Teik-Thye Lim, Ziyi Zhong, Rong Wang, Xiao Hu
With the assistance of acetic acid (CH3COOH), a novel 3D flower-like Bi2O3 was synthesized via hydrothermal process followed by calcination. For the first time, the role of CH3COOH as a capping agent in the formation of flower-like structure was investigated. The as-prepared flower-like Bi2O3 had a high activity on the degradation of sulfamethoxazole (SMX) under simulated solar light irradiation due to the narrow band gap of 2.69eV, high percentage of β-Bi2O3 as well as high intensity of polar facets (120) and (200)...
May 23, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28645011/transient-portal-venous-gas-associated-with-reversible-non-occlusive-mesenteric-ischemia-a-case-report
#8
Gaël Piton, Brice Paquette, Eric Delabrousse, Gilles Capellier
OBJECTIVES: To report the utility of abdominal ultrasonography (US) to identify the presence of portal venous gas (PVG) during non-occlusive mesenteric ischemia (NOMI), and to follow the disappearance of portal venous gas after resolution of the NOMI. DATA SOURCES: This was a clinical observation of a patient, with images of abdominal computed tomography (CT), and a video of portal venous gas identified by ultrasonography. DATA SYNTHESIS: We describe the case of an adult patient admitted to our ICU for NOMI developing 48h after cardiac surgery...
June 16, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28644988/effect-of-marbling-on-volatile-generation-oral-breakdown-and-in-mouth-flavor-release-of-grilled-beef
#9
Damian Frank, Kornelia Kaczmarska, Janet Paterson, Udayasika Piyasiri, Robyn Warner
While the positive effect of intramuscular fat (IMF) on beef tenderness is well-established, its role in flavor generation and flavor release is less defined. To increase understanding, real-time volatile generation was monitored during grilling of beefsteaks (grass and grain-fed Angus and grass-fed Wagyu) with different amounts of IMF by proton transfer reaction mass spectrometry. Volatile concentration increased significantly (p<0.001) when the IMF was >~10%, but did not differ (p>0.05) at lower IMF levels (5...
June 15, 2017: Meat Science
https://www.readbyqxmd.com/read/28644883/effects-of-dietary-inclusion-of-high-concentrations-of-crude-glycerin-on-meat-quality-and-fatty-acid-profile-of-feedlot-fed-nellore-bulls
#10
Eric H C B van Cleef, André P D'Áurea, Vanessa R Fávaro, Flavia O S van Cleef, Robson S Barducci, Marco T C Almeida, Otávio R Machado Neto, Jane M B Ezequiel
Crude glycerin, the main by-product of biodiesel production, can replace dietary energy sources, such as corn. The objective of this study was to evaluate the inclusion of up to 30% of crude glycerin in dry matter (DM) of the total diets, and its effects on meat quality parameters of feedlot Nellore bulls. Thirty animals (227.7 ± 23.8 kg body weight; 18 months old) were housed in individual pens and fed 5 experimental diets, containing 0, 7.5, 15, 22.5 or 30% crude glycerin (DM basis). After 103 d (21 d adaptation) animals were slaughtered and the Longissimus muscle was collected...
2017: PloS One
https://www.readbyqxmd.com/read/28644882/a-spatially-explicit-risk-assessment-approach-cetaceans-and-marine-traffic-in-the-pelagos-sanctuary-mediterranean-sea
#11
Maria Grazia Pennino, Antonella Arcangeli, Vinícius Prado Fonseca, Ilaria Campana, Graham J Pierce, Andrea Rotta, Jose Maria Bellido
Spatially explicit risk assessment is an essential component of Marine Spatial Planning (MSP), which provides a comprehensive framework for managing multiple uses of the marine environment, minimizing environmental impacts and conflicts among users. In this study, we assessed the risk of the exposure to high intensity vessel traffic areas for the three most abundant cetacean species (Stenella coeruleoalba, Tursiops truncatus and Balaenoptera physalus) in the southern area of the Pelagos Sanctuary, which is the only pelagic Marine Protected Area (MPA) for marine mammals in the Mediterranean Sea...
2017: PloS One
https://www.readbyqxmd.com/read/28644862/high-intensity-corneal-collagen-crosslinking-with-riboflavin-and-uva-in-rat-cornea
#12
Yirui Zhu, Peter S Reinach, Hanlei Zhu, Qiufan Tan, Qinxiang Zheng, Jia Qu, Wei Chen
Corneal collagen cross-linking (CXL) halts human corneal ectasias progression by increasing stromal mechanical stiffness. Although some reports describe that this procedure is effective in dealing with some infectious and immunologic corneal thinning diseases, there is a need for more animal models whose corneal thickness more closely resemble those occurring in these patients. To meet this need, we describe here high-intensity protocols that are safe and effective for obtaining CXL in rat corneas. Initially, a range of potentially effective UVA doses were evaluated based on their effectiveness in increasing tissue enzymatic resistance to dissolution...
2017: PloS One
https://www.readbyqxmd.com/read/28644859/grief-interventions-for-people-bereaved-by-suicide-a-systematic-review
#13
Katja Linde, Julia Treml, Jana Steinig, Michaela Nagl, Anette Kersting
BACKGROUND: Adaption to the loss of a loved one due to suicide can be complicated by feelings of guilt, shame, responsibility, rejection, and stigmatization. Therefore people bereaved by suicide have an increased risk for developing complicated grief which is related to negative physical and mental disorders and an increased risk for suicidal behavior. Grief interventions are needed for this vulnerable population. The aim of this systematic review was to provide an overview of the current state of evidence concerning the effectiveness of interventions that focus on grief for people bereaved by suicide...
2017: PloS One
https://www.readbyqxmd.com/read/28644846/the-tree-balance-signature-of-mass-extinction-is-erased-by-continued-evolution-in-clades-of-constrained-size-with-trait-dependent-speciation
#14
Guan-Dong Yang, Paul-Michael Agapow, Gabriel Yedid
The kind and duration of phylogenetic topological "signatures" left in the wake of macroevolutionary events remain poorly understood. To this end, we examined a broad range of simulated phylogenies generated using trait-biased, heritable speciation probabilities and mass extinction that could be either random or selective on trait value, but also using background extinction and diversity-dependence to constrain clade sizes. In keeping with prior results, random mass extinction increased imbalance of clades that recovered to pre-extinction size, but was a relatively weak effect...
2017: PloS One
https://www.readbyqxmd.com/read/28644831/inflammatory-and-vascular-placental-lesions-are-associated-with-neonatal-amplitude-integrated-eeg-recording-in-early-premature-neonates
#15
Dorit Paz-Levy, Letizia Schreiber, Offer Erez, Sharon Goshen, Justin Richardson, VIadimir Drunov, Orna Staretz Chacham, Eilon Shany
INTRODUCTION: Placental histologic examination can assist in revealing the mechanism leading to preterm birth. Accumulating evidence suggests an association between intrauterine pathological processes, morbidity and mortality of premature infants, and their long term outcome. Neonatal brain activity is increasingly monitored in neonatal intensive care units by amplitude integrated EEG (aEEG) and indices of background activity and sleep cycling patterns were correlated with long term outcome...
2017: PloS One
https://www.readbyqxmd.com/read/28644804/global-time-delay-estimation-in-ultrasound-elastography
#16
Hoda S Hashemi, Hassan Rivaz
A critical step in quasi-static ultrasound elastography is estimation of time-delay between two frames of radiofrequency (RF) data that are obtained while the tissue is undergoing deformation. This paper presents a novel technique for timedelay estimation (TDE) of all samples of RF data simultaneously, thereby exploiting all the information in RF data for TDE. A nonlinear cost function that incorporates similarity of RF data intensity and prior information of displacement continuity is formulated. Optimization of this function involves searching for TDE of all samples of the RF data, rendering the optimization intractable with conventional techniques given that the number of variables can be approximately one million...
June 21, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28644801/magnetic-particle-imaging-for-quantification-of-vascular-stenoses-a-phantom-study
#17
S Herz, P Vogel, T Kampf, M A Ruckert, S Veldhoen, V C Behr, T A Bley
Magnetic particle imaging (MPI) is a promising new tomographic imaging method to detect the spatial distribution of superparamagnetic iron-oxide nanoparticles (SPIOs). The aim of this study was to investigate the potential of MPI to quantify artificial stenoses in vessel phantoms. Custom-made stenosis phantoms (length 40 mm; inner diameter 8 mm) with different degrees of stenosis (0 %, 25 %, 50 %, 75 % and 100 %) were scanned in a custom-built MPI scanner (in-plane resolution: ~ 1-1.5 mm, field of view: 65 × 29 × 29 mm3)...
June 21, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28644785/what-should-physicians-do-when-they-disagree-clinically-and-ethically-with-a-surrogate-s-wishes
#18
Terri Traudt, Joan Liaschenko
When patients' surrogates and physicians disagree about the appropriateness of aggressive treatment in intensive care units (ICUs), physicians can experience surrogates' demands as sources of moral distress. This article addresses the virtues and communication strategies needed to respond appropriately in such situations. Specifically, we offer a framework and language that rely on moral community to facilitate common ground and alleviate moral distress.
June 1, 2017: AMA Journal of Ethics
https://www.readbyqxmd.com/read/28644774/cd33-splicing-polymorphism-determines-gemtuzumab-ozogamicin-response-in-de-novo-acute-myeloid-leukemia-report-from-randomized-phase-iii-children-s-oncology-group-trial-aaml0531
#19
Jatinder K Lamba, Lata Chauhan, Miyoung Shin, Michael R Loken, Jessica A Pollard, Yi-Cheng Wang, Rhonda E Ries, Richard Aplenc, Betsy A Hirsch, Susana C Raimondi, Roland B Walter, Irwin D Bernstein, Alan S Gamis, Todd A Alonzo, Soheil Meshinchi
Purpose Gemtuzumab ozogamicin (GO), a CD33-targeted immunoconjugate, is a re-emerging therapy for acute myeloid leukemia (AML). CD33 single nucleotide polymorphism rs12459419 C>T in the splice enhancer region regulates the expression of an alternatively spliced CD33 isoform lacking exon2 (D2-CD33), thus eliminating the CD33 IgV domain, which is the antibody-binding site for GO, as well as diagnostic immunophenotypic panels. We aimed to determine the impact of the genotype of this splicing polymorphism in patients with AML treated with GO-containing chemotherapy...
June 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28644742/new-legal-requirements-for-submission-of-product-information-to-poisons-centres-in-eu-member-states
#20
Ronald de Groot, Pieter Brekelmans, Herbert Desel, Irma de Vries
In the past eight years, the European Association of Poisons Centres and Clinical Toxicologists (EAPCCT) has been intensively involved in a European Commission led process to develop EU legislation on the information of hazardous products that companies have to notify to EU Poisons Centres (or equivalent "appointed bodies"). As a result of this process, the Commission adopted Regulation (EU) No 2017/542, amending the CLP Regulation by adding an Annex on harmonised product submission requirements. Harmonised mixture information requirements: Detailed and consistent information on the composition of the hazardous product will become available to EU Poisons Centres (PC)...
June 23, 2017: Clinical Toxicology
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