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https://www.readbyqxmd.com/read/27922181/evaluation-of-gas-and-carbon-transport-in-a-methanogenic-bioelectrochemical-system-bes
#1
Christy M Dykstra, Spyros G Pavlostathis
Bioelectrochemical systems (BESs) may be used to upgrade anaerobic digester biogas by directly converting CO2 to CH4 .The objective of this study was to evaluate gas (N2 , CO2 , CH4 , and H2 ) and carbon transport within a methanogenic BES. Four BES configurations were evaluated: abiotic anode with abiotic cathode (AAn-ACa), bioanode with abiotic cathode (BAn-ACa), abiotic anode with biocathode (AAn-BCa), and bioanode with biocathode (BAn-BCa). Transport of N2 , a gas commonly used for flushing anoxic systems, out of the anode headspace ranged from 3...
December 6, 2016: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/27920871/suprasellar-pilocytic-astrocytoma-in-an-adult-with-hemorrhage-and-leptomeningeal-dissemination-case-report-and-review-of-literature
#2
Radwa K Soliman, Caterina Budai, Pravin Mundada, Bakar Aljohani, Elisabeth J Rushing, Spyros S Kollias
Pilocytic astrocytoma (PA) is a low-grade tumor. It has an excellent prognosis after total resection. Leptomeningeal dissemination and hemorrhage are very rare to be associated with PA and lead to unfavorable prognosis. A 35-year-old man was diagnosed with a hemorrhagic suprasellar PA in 2006. Subsequent examination in 2007 revealed another large subdural hemorrhagic lesion in the sacral region, which proved to be PA by histopathologic assessment. Other leptomeningeal foci were discovered mainly at the craniocervical junction...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27919633/greater-activation-of-peripheral-t-follicular-helper-cells-following-high-dose-influenza-vaccine-in-older-adults-forecasts-seroconversion
#3
Mark A Pilkinton, Katherine J Nicholas, Christian M Warren, Rita M Smith, Sandra M Yoder, H Keipp Talbot, Spyros A Kalams
BACKGROUND: Influenza related morbidity and mortality disproportionately impacts older adults. The serologic response to vaccine is diminished in older adults; however, high dose inactivated influenza vaccine (HD IIV) has shown improved rates of seroconversion compared to standard dose (SD IIV). We hypothesize this may be due to the superior ability of high dose vaccine to activate T follicular helper (Tfh) cells and provide B cell dependent T cell help. METHODS: We measured peripheral Tfh (pTfh) activation in 50 community dwelling adults 65years or older who were randomly assigned to receive either the HD IIV or SD IIV...
December 2, 2016: Vaccine
https://www.readbyqxmd.com/read/27914260/the-extent-of-fermentative-transformation-of-phenolic-compounds-in-the-bioanode-controls-exoelectrogenic-activity-in-a-microbial-electrolysis-cell
#4
Xiaofei Zeng, Maya A Collins, Abhijeet P Borole, Spyros G Pavlostathis
Phenolic compounds in hydrolysate/pyrolysate and wastewater streams produced during the pretreatment of lignocellulosic biomass for biofuel production present a significant challenge in downstream processes. Bioelectrochemical systems are increasingly recognized as an alternative technology to handle biomass-derived streams and to promote water reuse in biofuel production. Thus, a thorough understanding of the fate of phenolic compounds in bioanodes is urgently needed. The present study investigated the biotransformation of three structurally similar phenolic compounds (syringic acid, SA; vanillic acid, VA; 4-hydroxybenzoic acid, HBA), and their individual contribution to exoelectrogenesis in a microbial electrolysis cell (MEC) bioanode...
November 27, 2016: Water Research
https://www.readbyqxmd.com/read/27912820/modern-endodontic-microsurgery-concepts-a-clinical-update
#5
REVIEW
Spyros Floratos, Syngcuk Kim
Increased use of the surgical operating microscope in endodontic surgery has elucidated many shortcomings of previous techniques and along with microsurgical instruments and new more biologically acceptable root-end filling materials has started the new microsurgical era in surgical endodontics. Endodontic microsurgery is a minimally invasive technique that results in less postoperative pain and edema and faster wound healing. It offers a significantly higher success rate than traditional apical surgery technique...
January 2017: Dental Clinics of North America
https://www.readbyqxmd.com/read/27904775/disease-evolution-and-heterogeneity-in-bilateral-breast-cancer
#6
Elena Fountzilas, Vassiliki Kotoula, Flora Zagouri, Eleni Giannoulatou, George Kouvatseas, George Pentheroudakis, Triantafyllia Koletsa, Mattheos Bobos, Kyriaki Papadopoulou, Epaminontas Samantas, Efterpi Demiri, Spyros Miliaras, Christos Christodoulou, Sofia Chrisafi, Evangelia Razis, Florentia Fostira, Dimitrios Pectasides, George Zografos, George Fountzilas
Bilateral breast cancers (BBC) are currently treated as independent tumors arising in the same patient. Herein, we investigated whether BBC indeed evolve independently at the genomic level. We examined paired targeted next generation sequencing genotypes from 155 paraffin tumors corresponding to 76 BBC patients (75 women and one man; 52 concurrent and 24 metachronous), for coding mutations (amino acid changing, minor allele frequency <0.1%) and single nucleotide polymorphism (SNP) zygosity. Germline genotypes were available for 29 patients...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27904430/natalizumab-related-progressive-multifocal-leukoencephalopathy-immune-reconstitution-inflammatory-syndrome-a-case-report-highlighting-clinical-and-mri-features
#7
Bela Purohit, Eranga Ganewatte, Spyros S Kollias
Multiple sclerosis (MS) patients treated with natalizumab often face the uncommon but severe complication of developing progressive multifocal leukoencephalopathy (PML). PML may be further complicated by immune reconstitution inflammatory syndrome (IRIS) after the removal of the drug. Since both PML and IRIS are associated with high morbidity and mortality rates, early clinical and radiological diagnosis of these complications is of paramount importance. Here, we report a case of an adult male patient who was diagnosed with PML after receiving natalizumab therapy for 6 years for the treatment of MS...
September 2016: Malaysian Journal of Medical Sciences: MJMS
https://www.readbyqxmd.com/read/27890841/development-of-a-scoring-system-for-the-prediction-of-early-graft-failure-after-peripheral-arterial-bypass-surgery
#8
Andreas M Lazaris, Sotiria Mastoraki, Evangelos Kontopantelis, Konstantinos Seretis, Maria Karouki, Konstantinos Moulakakis, Miltiadis Matsagkas, Spyros N Vasdekis
OBJECTIVES: An occluded lower limb arterial bypass is associated with poor prognosis for the limb. Currently, no risk assessment method to estimate the risk of early graft failure exists. Aim of this study was to investigate the effect of various potential factors on early graft failure of infrainguinal bypass surgery and to develop a risk-scoring model to predict it. DESIGN AND METHODS: A prospective observational clinical study was performed. One hundred infrainguinal bypass procedures (60 autologous and 40 synthetic grafts), throughout a 3-year period were included...
November 24, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27885092/nuclear-and-radiological-preparedness-the-achievements-of-the-european-research-project-prepare
#9
Thierry Schneider, Florian Gering, Sylvie Charron, Mark Zhelezniak, Spyros Andronopoulos, Gilles Heriard-Dubreuil, Johan Camps, Wolfgang Raskob
The PREPARE project aimed closing gaps identified in nuclear and radiological preparedness in Europe following the first evaluation of the Fukushima disaster. With 46 partners from Europe and Japan, it collected the key players in the area of emergency management and rehabilitation preparedness. Starting from February 2013, the project ended in January 2016. Among others, the project reviewed existing operational procedures for long-lasting releases, cross-border problems in radiation monitoring and food safety and further developed missing functionalities in decision support systems ranging from improved source term estimation and dispersion modelling to the inclusion of hydrological pathways for European water bodies...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27881809/situs-inversus-totalis-single-stage-anatomic-repair-of-complex-congenital-heart-disease
#10
Andrew C Chatzis, Alexandros J Tsoutsinos, Meletios A Kanakis, Constantinos A Contrafouris, Spyros Rammos, Fotios A Mitropoulos
Transposition of the great arteries occurs rarely in patients with mirror image dextrocardia and situs inversus, while the combination with severe coarctation of the descending aorta (CoA) makes the anatomy even more unusual. Therefore, it is not surprising that a case with such unusual and complicated anatomy presents unique problems when a primary definitive correction is attempted. We report a patient with situs inversus totalis and complex congenital heart disease including transposition of the great arteries and severe CoA who underwent successful complete, single-stage, anatomic correction...
November 23, 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27877137/an-extreme-mountain-ultra-marathon-decreases-the-cost-of-uphill-walking-and-running
#11
Gianluca Vernillo, Aldo Savoldelli, Spyros Skafidas, Andrea Zignoli, Antonio La Torre, Barbara Pellegrini, Guido Giardini, Pietro Trabucchi, Grégoire P Millet, Federico Schena
Purpose: To examine the effects of the world's most challenging mountain ultramarathon (MUM, 330 km, cumulative elevation gain of +24,000 m) on the energy cost and kinematics of different uphill gaits. Methods: Before (PRE) and immediately after (POST) the competition, 19 male athletes performed three submaximal 5-min treadmill exercise trials in a randomized order: walking at 5 km·h(-1), +20%; running at 6 km·h(-1), +15%; and running at 8 km·h(-1), +10%. During the three trials, energy cost was assessed using an indirect calorimetry system and spatiotemporal gait parameters were acquired with a floor-level high-density photoelectric cells system...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27872733/hyperhemolytic-syndrome-complicating-a-delayed-hemolytic-transfusion-reaction-due-to-anti-p1-alloimmunization-in-a-pregnant-woman-with-hbo-arab-%C3%AE-thalassemia
#12
Zoe Bezirgiannidou, Anna Christoforidou, Eftychia Kontekaki, Athanasios G Anastasiadis, Spyros I Papamichos, Helen Menexidou, Dimitrios Margaritis, Georges Martinis, Elpis Mantadakis
BACKGROUND: Hyperhemolytic Syndrome or Hyperhemolytic Transfusion Reaction (HHTR), a life-threatening subset of Delayed Hemolytic Transfusion Reaction (DHTR) is characterized by destruction of both transfused and autologous erythrocytes evidenced by a fall in post transfusion hemoglobin below the pre-transfusion level. CASE REPORT: We describe a case of DHTR due to anti-P1 alloimmunization manifesting with hyperhemolysis in a 30-year-old Greek Pomak woman with thalassemia intermedia (HbO-Arab/β-thalassemia), during the11(th) week of her first gestation...
2016: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/27866814/predictors-of-tissue-healing-in-ulcerative-colitis-patients-treated-with-anti-tnf
#13
Nikos Viazis, Marios Giakoumis, Giorgos Bamias, Dimitris Goukos, Theodoros Koukouratos, Konstantina Katopodi, Pantelis Karatzas, Christos Triantos, Chrisostomos Tsolias, Georgios Theocharis, George L Daikos, Spyros D Ladas, Dimitrios G Karamanolis, Gerasimos J Mantzaris
AIM: To identify factors predicting mucosal healing in ulcerative colitis patients treated with anti-TNFα agents with or without azathioprine. METHODS: In a prospective, multicenter, one-year study biologic naïve patients aged 25-65 years, with corticosteroid-dependent or refractory colitis received combination treatment with anti-TNFα and azathioprine for 6 months followed by anti-TNFα monotherapy. Patients who denied combination therapy or were outside this age range received anti-TNFα monotherapy (controls)...
October 20, 2016: Digestive and Liver Disease
https://www.readbyqxmd.com/read/27865639/a-network-meta-analysis-of-randomized-controlled-trials-comparing-treatment-modalities-for-de-novo-superficial-femoral-artery-occlusive-lesions
#14
REVIEW
Constantine N Antonopoulos, Spyridon N Mylonas, Konstantinos G Moulakakis, Theodoros N Sergentanis, George S Sfyroeras, Andreas M Lazaris, John D Kakisis, Spyros N Vasdekis
BACKGROUND: Treatment of superficial femoral artery (SFA) lesions remains challenging. We conducted a network meta-analysis of randomized controlled trials aiming to explore the efficacy of treatment modalities for SFA "de novo" lesions. METHODS: Eleven treatments for SFA occlusive disease were recognized. We used primary patency and binary restenosis at 12-month follow-up as proxies of efficacy for the treatment of SFA lesions. RESULTS: A total of 33 studies (66 study arms; 4659 patients) were deemed eligible...
November 16, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27810728/material-properties-of-bovine-intervertebral-discs-across-strain-rates
#15
Nicolas Newell, Grigorios Grigoriadis, Alexandros Christou, Diagarajen Carpanen, Spyros D Masouros
The intervertebral disc (IVD) is a complex structure responsible for distributing compressive loading to adjacent vertebrae and allowing the vertebral column to bend and twist. To study the mechanical behaviour of individual components of the IVD, it is common for specimens to be dissected away from their surrounding tissues for mechanical testing. However, disrupting the continuity of the IVD to obtain material properties of each component separately may result in erroneous values. In this study, an inverse finite element (FE) modelling optimisation algorithm has been used to obtain material properties of the IVD across strain rates, therefore bypassing the need to harvest individual samples of each component...
October 19, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27808450/comparative-analysis-of-saf-protaper-next-and-bt-race-in-eliminating-enterococcus-faecalis-from-long-oval-canals-an-ex-vivo-study
#16
Andreas Krokidis, Carlo Bonfanti, Antonio Cerutti, Nicola Barabanti, Spyros Zinelis, Panos Panopoulos
Comparison of the ability of newly designed rotary files to eliminate viable Enterococcus faecalis populations from long oval root canals of extracted human teeth to that of the self-adjusting file (SAF). One hundred caries-free, single-rooted, long oval teeth were contaminated with E. faecalis. The teeth were randomly distributed into four groups (n = 25) as follows: G.1, manual; G.2, SAF; G.3, ProTaper Next; and G.4, BT-Race. Two microbial samples were obtained from each tooth with sterile paper points, (s1) before and (s2) after instrumentation...
November 3, 2016: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/27807906/activin-a-and-follistatin-in-patients-with-asthma-does-severity-make-the-difference
#17
Anastasia Papaporfyriou, Petros Bakakos, Konstantinos Kostikas, Georgios Papatheodorou, Georgios Hillas, Rodoula Trigidou, Patroklos Katafigiotis, Nikolaos G Koulouris, Spyros A Papiris, Stelios Loukides
BACKGROUND AND OBJECTIVE: Activin A is a pleiotropic cytokine holding a fundamental role in inflammation and tissue remodelling. Follistatin can modulate the bioactivity of activin. We aimed to measure activin A and follistatin in sputum supernatants and bronchoalveolar lavage (BAL) of asthmatic patients and to determine the possible associations with severity as well as with inflammatory and remodelling indices. METHODS: A total of 58 asthmatic patients (33 with severe refractory asthma (SRA)) and 10 healthy controls underwent sputum induction for % cells, activin A, follistatin, eosinophilic cationic protein (ECP), transforming growth factor beta 1 (TGF-β1), IL-13 and IL-8 measurements...
November 2, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27807590/mitochondrial-haplogroups-as-a-risk-factor-for-herpes-zoster
#18
Rebecca T Levinson, Todd Hulgan, Spyros A Kalams, Joshua P Fessel, David C Samuels
Background.  Herpes zoster, or shingles, is a common, painful reactivation of latent varicella zoster virus infection. Understanding host factors that predispose to herpes zoster may permit development of more effective prevention strategies. Our objective was to examine mitochondrial haplogroups as a potential host factor related to herpes zoster incidence. Methods.  Study participants were drawn from BioVU, a deoxyribonucleic acid (DNA) biobank connected to deidentified electronic medical records (EMRs) from Vanderbilt University Medical Center...
October 2016: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/27774510/robotic-qm-mm-driven-maturation-of-antibody-combining-sites
#19
Ivan V Smirnov, Andrey V Golovin, Spyros D Chatziefthimiou, Anastasiya V Stepanova, Yingjie Peng, Olga I Zolotareva, Alexey A Belogurov, Inna N Kurkova, Natalie A Ponomarenko, Matthias Wilmanns, G Michael Blackburn, Alexander G Gabibov, Richard A Lerner
In vitro selection of antibodies from large repertoires of immunoglobulin (Ig) combining sites using combinatorial libraries is a powerful tool, with great potential for generating in vivo scavengers for toxins. However, addition of a maturation function is necessary to enable these selected antibodies to more closely mimic the full mammalian immune response. We approached this goal using quantum mechanics/molecular mechanics (QM/MM) calculations to achieve maturation in silico. We preselected A17, an Ig template, from a naïve library for its ability to disarm a toxic pesticide related to organophosphorus nerve agents...
October 2016: Science Advances
https://www.readbyqxmd.com/read/27769850/integrated-exposure-and-risk-characterization-of-bisphenol-a-in-europe
#20
Dimosthenis A Sarigiannis, Spyros P Karakitsios, Evangelos Handakas, Konstantina Simou, Ermioni Solomou, Alberto Gotti
The current study aims at a comprehensive risk characterization of bisphenol A (BPA) supported by an integrated exposure modelling framework that comprises far field and near field exposure modelling coupled to a dynamic lifetime PBTK model. Exposure analysis was done on European data of BPA food residues and human biomonitoring (HBM). The latter were further assimilated through an advanced exposure reconstruction modelling framework to estimate the corresponding external and internal systemic dose of BPA and its metabolites...
October 18, 2016: Food and Chemical Toxicology
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