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https://www.readbyqxmd.com/read/28334810/bimodal-regulation-of-dishevelled-function-by-vangl2-during-morphogenesis
#1
Hwa-Seon Seo, Raymond Habas, Chenbei Chang, Jianbo Wang
Convergent extension (CE) is a fundamental morphogenetic mechanism that underlies numerous processes in vertebrate development, and its disruption can lead to human congenital disorders such as neural tube closure defects. The dynamic, oriented cell intercalation during CE is regulated by a group of core proteins identified originally in flies to coordinate epithelial planar cell polarity (PCP). The existing model explains how core PCP proteins, including Van Gogh (Vang) and Dishevelled (Dvl), segregate into distinct complexes on opposing cell cortex to coordinate polarity among static epithelial cells...
March 13, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28334169/characterization-of-saccharomyces-uvarum-beijerinck-1898-and-related-hybrids-assessment-of-molecular-markers-that-predict-the-parent-and-hybrid-genomes-and-a-proposal-to-name-yeast-hybrids
#2
Huu-Vang Nguyen, Teun Boekhout
The use of the nuclear-DNA re-association technique has led taxonomists to consider Saccharomyces uvarum a synonym of S. bayanus. The latter, however, is not a species but a hybrid harbouring S. eubayanus (Seu) and S. uvarum (Su) sub-genomes with a minor DNA contribution from S. cerevisiae (Sc). To recognize genetically pure lines of S. uvarum and putative interspecies hybrids among so-called S. bayanus strains present in public culture collections, we propose the use of four markers that were defined from the S...
March 3, 2017: FEMS Yeast Research
https://www.readbyqxmd.com/read/28304219/surgical-or-transcatheter-aortic-valve-replacement-in-intermediate-risk-patients
#3
Michael J Reardon, Nicolas M Van Mieghem, Jeffrey J Popma, Neal S Kleiman, Lars Søndergaard, Mubashir Mumtaz, David H Adams, G Michael Deeb, Brijeshwar Maini, Hemal Gada, Stanley Chetcuti, Thomas Gleason, John Heiser, Rüdiger Lange, William Merhi, Jae K Oh, Peter S Olsen, Nicolo Piazza, Mathew Williams, Stephan Windecker, Steven J Yakubov, Eberhard Grube, Raj Makkar, Joon S Lee, John Conte, Eric Vang, Hang Nguyen, Yanping Chang, Andrew S Mugglin, Patrick W J C Serruys, Arie P Kappetein
Background Although transcatheter aortic-valve replacement (TAVR) is an accepted alternative to surgery in patients with severe aortic stenosis who are at high surgical risk, less is known about comparative outcomes among patients with aortic stenosis who are at intermediate surgical risk. Methods We evaluated the clinical outcomes in intermediate-risk patients with severe, symptomatic aortic stenosis in a randomized trial comparing TAVR (performed with the use of a self-expanding prosthesis) with surgical aortic-valve replacement...
March 17, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28298144/enhanced-raman-spectroscopy-via-plasmonic-and-carbonaceous-nanostructures-for-the-detection-diagnosis-and-treatment-of-cancer-part-2-treatment
#4
Emilie Darrigues, Vijayalakshmi Dantuluri, Zeid A Nima, Kieng B Vang, Robert J Griffin, Alexandru R Biris, Anindya Ghosh, Alexandru S Biris
Raman spectroscopy and surface-enhanced Raman scattering (SERS) have the potential to improve the accurate treatment, detection, and monitoring of various diseases, particularly cancer. Over the last decade, technological developments have enhanced Raman spectroscopy's ability to detect, discriminate, and diagnose cancers, both with and without complex nanosystems. This review discusses the recent advances that have made Raman a major tool for tumor resection guidance, for drug delivery targeting and monitoring, and enhancing photodynamic and photothermal therapy with the support of carbon-based and/or noble metal plasmonic nanoparticles...
March 15, 2017: Drug Metabolism Reviews
https://www.readbyqxmd.com/read/28288640/overexpression-of-a-c4-dicarboxylate-transporter-is-the-key-for-rerouting-citric-acid-to-c4-dicarboxylic-acid-production-in-aspergillus-carbonarius
#5
Lei Yang, Eleni Christakou, Jesper Vang, Mette Lübeck, Peter Stephensen Lübeck
BACKGROUND: C4-dicarboxylic acids, including malic acid, fumaric acid and succinic acid, are valuable organic acids that can be produced and secreted by a number of microorganisms. Previous studies on organic acid production by Aspergillus carbonarius, which is capable of producing high amounts of citric acid from varieties carbon sources, have revealed its potential as a fungal cell factory. Earlier attempts to reroute citric acid production into C4-dicarboxylic acids have been with limited success...
March 14, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/28274633/discovery-of-a-2-fluoro-2-c-methyl-c-nucleotide-hcv-polymerase-inhibitor-and-a-phosphoramidate-prodrug-with-favorable-properties
#6
Thorsten A Kirschberg, Sammy Metobo, Michael O Clarke, Vangelis Aktoudianakis, Darius Babusis, Ona Barauskas, Gabriel Birkus, Thomas Butler, Daniel Byun, Gregory Chin, Edward Doerffler, Thomas E Edwards, Martijn Fenaux, Rick Lee, Willard Lew, Michael R Mish, Eisuke Murakami, Yeojin Park, Neil H Squires, Neeraj Tirunagari, Ting Wang, Mark Whitcomb, Jie Xu, Huiling Yang, Hong Ye, Lijun Zhang, Todd C Appleby, Joy Y Feng, Adrian S Ray, Aesop Cho, Choung U Kim
A series of 2'-fluorinated C-nucleosides were prepared and tested for anti-HCV activity. Among them, the triphosphate of 2'-fluoro-2'-C-methyl adenosine C-nucleoside (15) was a potent and selective inhibitor of the NS5B polymerase and maintained activity against the S282T resistance mutant. A number of phosphoramidate prodrugs were then prepared and evaluated leading to the identification of the 1-aminocyclobutane-1-carboxylic acid isopropyl ester variant (53) with favorable pharmacokinetic properties including efficient liver delivery in animals...
February 20, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28269654/a-hybrid-discrete-continuous-model-of-in-vitro-spheroid-tumor-growth-and-drug-response
#7
Giorgos Tzedakis, Evangelos Liapis, Eleftheria Tzamali, Giannis Zacharakis, Vangelis Sakkalis
Anti-cancer therapy efficacy in solid tumors mainly depends on drug transportation through the vasculature system and the extracellular matrix, on diffusion gradients and clonal heterogeneity within the tumor mass, as well as on the responses of the individual tumor cells to drugs and their interactions with each other and their local microenvironment. In this work, we develop a mathematical predictive model for tumor growth and drug response based on 3D spheroids experiments that possess several in vivo features of tumors and are considered better for drug screening...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269534/addressing-drug-drug-and-drug-food-interactions-through-personalized-empowerment-services-for-healthcare
#8
Marios Spanakis, Emmanouil G Spanakis, Haridimos Kondylakis, Stelios Sfakianakis, Irini Genitsaridi, Vangelis Sakkalis, Manolis Tsiknakis, Kostas Marias
Personalized healthcare systems support the provision of timely and appropriate information regarding healthcare options and treatment alternatives. Especially for patients that receive multi-drug treatments a key issue is the minimization of the risk of adverse effects due to drug-drug interactions (DDIs). DDIs may be the result of doctor prescribed drugs but also due to self-medication of conventional drugs, alternative medicines, food habits, alcohol or smoking. It is therefore crucial for personalized health systems, apart from assisting physicians for optimal prescription practices, to also provide appropriate information for individual users for drug-drug interactions or similar information regarding risks for modulation of the ensuing treatment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268893/applicability-of-ssvep-based-brain-computer-interfaces-for-robot-navigation-in-real-environments
#9
Christina Farmaki, Georgios Christodoulakis, Vangelis Sakkalis
Brain-computer interfaces have been extensively studied and used in order to aid patients suffering from neuromuscular diseases to communicate and control the surrounding environment. Steady-state visual evoked potentials (SSVEP) constitute a very popular BCI stimulation protocol, due to their efficiency and quick response time. In this study, we developed a SSVEP-based BCI along with a low-cost custom radio-controlled robot-car providing live video feedback from a wireless camera mounted on the robot, serving as our testbed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264609/enhanced-raman-spectroscopy-via-plasmonic-and-carbonaceous-nanostructures-for-the-detection-diagnosis-and-treatment-of-cancer-part-1-diagnosis
#10
Emilie Darrigues, Zeid A Nima, Waquar Majeed, Kieng Bao Vang, Vijayalakshmi Dantuluri, Alexandru R Biris, Vladimir Zharov, Robert J Griffin, Alexandru S Biris
Spectroscopic techniques including Raman, photothermal, photoacoustic, have been intensively studied for the accurate and fast detection of diseases, such as cancer. Additionally, due to the drastic, rapid advances in computer science and the intense use of various multifunctional nanosystems in the medical field, surface-enhanced Raman scattering (SERS) and Raman spectroscopy have developed quickly as new tools for fundamental analysis in biochemical science and as a new imaging method to aid in early, efficient cancer diagnosis...
March 7, 2017: Drug Metabolism Reviews
https://www.readbyqxmd.com/read/28259120/study-of-age-dependent-structural-and-functional-changes-of-mitochondria-in-skeletal-muscles-and-heart-of-naked-mole-rats-heterocephalus-glaber
#11
S Holtze, C M Eldarov, V B Vays, I M Vangeli, M Yu Vysokikh, L E Bakeeva, V P Skulachev, T B Hildebrandt
Morphometric analysis of mitochondria in skeletal muscles and heart of 6- and 60-month-old naked mole rats (Heterocephalus glaber) revealed a significant age-dependent increase in the total area of mitochondrial cross-sections in studied muscle fibers. For 6- and 60-month-old animals, these values were 4.8 ± 0.4 and 12.7 ± 1.8%, respectively. This effect is mainly based on an increase in the number of mitochondria. In 6-month-old naked mole rats, there were 0.23 ± 0.02 mitochondrial cross-sections per µm(2) of muscle fiber, while in 60-month-old animals this value was 0...
December 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28258105/effect-of-%C3%AE-7-nicotinic-acetylcholine-receptor-activation-on-cardiac-fibroblasts-a-mechanism-underlying-rv-fibrosis-associated-with-cigarette-smoke-exposure
#12
Alexander Vang, Richard T Clements, Havovi Chichger, Nouaying Kue, Ayed Allawzi, Kelly A O'Connell, Euy-Myoung Jeong, Samuel Dudley, Pavlo Sakhatskyy, Qing Lu, Peng Zhang, Sharon Rounds, Gaurav Choudhary
INTRODUCTION: Right ventricular dysfunction is associated with numerous smoking-related illnesses including chronic obstructive pulmonary disease (COPD) where it is present even in absence of pulmonary hypertension. It is unknown if exposure to cigarette smoke has direct effects on RV function and cardiac fibroblast proliferation or collagen synthesis. In this study, we evaluated cardiac function and fibrosis in mice exposed to cigarette smoke (CS) and determined mechanisms of smoke-induced changes in cardiac fibroblast signaling and fibrosis...
March 3, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28248817/long-term-behavior-of-serous-borderline-tumors-subdivided-into-atypical-proliferative-tumors-and-noninvasive-low-grade-carcinomas-a-population-based-clinicopathologic-study-of-942-cases
#13
Russell Vang, Charlotte G Hannibal, Jette Junge, Kirsten Frederiksen, Susanne K Kjaer, Robert J Kurman
Ovarian serous borderline tumors (SBTs) have been the subject of considerable controversy, particularly with regard to terminology and behavior. It has been proposed that they constitute a heterogenous group of tumors composed, for the most part, of typical SBTs that are benign and designated "atypical proliferative serous tumor (APST)" and a small subset of SBTs with micropapillary architecture that have a poor outcome and are designated "noninvasive low-grade serous carcinoma (niLGSC)". It also has been argued that the difference in behavior between the 2 groups is not due to the subtype of the primary tumor but rather the presence of extraovarian disease, specifically invasive implants...
February 28, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28240173/personalized-medicine-of-alcohol-addiction-pharmacogenomics-and-beyond
#14
Vangelis George Manolopoulos, Georgia Ragia
Alcohol addiction or alcoholism is the most severe form of problem drinking. A variety of treatment methods for alcoholism are currently available that combine medications, behavioral treatment and peer support. The drugs that are currently approved by the U.S. Food and Drug Administration (FDA) for treatment of alcohol dependence are disulfiram, naltrexone and acamprosate. For many patients, however, these treatments are not effective. Evidence from a number of different studies suggests that different factors, both psychosocial and economic, as well as genetic variation, are significant contributors to interindividual variation both of clinical presentation of alcohol problems and response to a given treatment...
February 23, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28236639/pericyte-modulation-by-a-functional-antibody-obtained-by-a-novel-single-cell-selection-strategy
#15
Jesper Just, Simon Lykkemark, Charlotte Høgsbjerg Nielsen, Ali Reza Roshenas, Kim Ryun Drasbek, Steen Vang Petersen, Toke Bek, Peter Kristensen
OBJECTIVE: Pericytes surround the endothelial cells of the microvasculature where they serve as active participants in crucial vascular functions such as angiogenesis, stability, and permeability. However, pericyte loss or dysfunction has been described in a number of pathologies. Targeting pericytes could therefore prove instrumental in the further development of vascular therapeutics. METHODS: In order to target the pericyte, a proteomic-based approach using antibody phage display was conducted...
February 25, 2017: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/28227912/a-hybrid-discrete-continuous-model-of-in-vitro-spheroid-tumor-growth-and-drug-response
#16
Giorgos Tzedakis, Evangelos Liapis, Eleftheria Tzamali, Giannis Zacharakis, Vangelis Sakkalis, Giorgos Tzedakis, Evangelos Liapis, Eleftheria Tzamali, Giannis Zacharakis, Vangelis Sakkalis, Giannis Zacharakis, Vangelis Sakkalis, Evangelos Liapis, Giorgos Tzedakis, Eleftheria Tzamali
Anti-cancer therapy efficacy in solid tumors mainly depends on drug transportation through the vasculature system and the extracellular matrix, on diffusion gradients and clonal heterogeneity within the tumor mass, as well as on the responses of the individual tumor cells to drugs and their interactions with each other and their local microenvironment. In this work, we develop a mathematical predictive model for tumor growth and drug response based on 3D spheroids experiments that possess several in vivo features of tumors and are considered better for drug screening...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227789/addressing-drug-drug-and-drug-food-interactions-through-personalized-empowerment-services-for-healthcare
#17
Marios Spanakis, Emmanouil G Spanakis, Haridimos Kondylakis, Stelios Sfakianakis, Irini Genitsaridi, Vangelis Sakkalis, Manolis Tsiknakis, Kostas Marias, Marios Spanakis, Emmanouil G Spanakis, Haridimos Kondylakis, Stelios Sfakianakis, Irini Genitsaridi, Vangelis Sakkalis, Manolis Tsiknakis, Kostas Marias, Manolis Tsiknakis, Haridimos Kondylakis, Kostas Marias, Stelios Sfakianakis, Irini Genitsaridi, Emmanouil G Spanakis, Vangelis Sakkalis, Marios Spanakis
Personalized healthcare systems support the provision of timely and appropriate information regarding healthcare options and treatment alternatives. Especially for patients that receive multi-drug treatments a key issue is the minimization of the risk of adverse effects due to drug-drug interactions (DDIs). DDIs may be the result of doctor prescribed drugs but also due to self-medication of conventional drugs, alternative medicines, food habits, alcohol or smoking. It is therefore crucial for personalized health systems, apart from assisting physicians for optimal prescription practices, to also provide appropriate information for individual users for drug-drug interactions or similar information regarding risks for modulation of the ensuing treatment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227093/applicability-of-ssvep-based-brain-computer-interfaces-for-robot-navigation-in-real-environments
#18
Christina Farmaki, Georgios Christodoulakis, Vangelis Sakkalis, Christina Farmaki, Georgios Christodoulakis, Vangelis Sakkalis, Vangelis Sakkalis, Christina Farmaki, Georgios Christodoulakis
Brain-computer interfaces have been extensively studied and used in order to aid patients suffering from neuromuscular diseases to communicate and control the surrounding environment. Steady-state visual evoked potentials (SSVEP) constitute a very popular BCI stimulation protocol, due to their efficiency and quick response time. In this study, we developed a SSVEP-based BCI along with a low-cost custom radio-controlled robot-car providing live video feedback from a wireless camera mounted on the robot, serving as our testbed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221217/interobserver-reproducibility-among-gynecologic-pathologists-in-diagnosing-heterologous-osteosarcomatous-component-in-gynecologic-tract-carcinosarcomas
#19
Ankur R Sangoi, Malti Kshirsagar, Andres A Roma, Andrew E Horvai, Mamatha Chivukula, Lora H Ellenson, Oluwole Fadare, Ann K Folkins, Karuna Garg, Krisztina Hanley, Teri A Longacre, Jacqueline Haas, W Glenn McCluggage, Jesse K McKenney, Marisa R Nucci, Esther Oliva, Kay J Park, Vinita Parkash, Charles M Quick, Joseph T Rabban, Joanne K L Rutgers, Robert Soslow, Russell Vang, Anna Yemelyanova, Charles Zaloudek, Andrew H Beck
Distinguishing hyalinized stroma from osteoid production by a heterologous osteosarcomatous component can be challenging in gynecologic tract carcinosarcomas. As heterologous components in a carcinosarcoma may have prognostic and therapeutic implications, it is important that these are recognized. This study examines interobserver reproducibility among gynecologic pathologists in the diagnosis of osteosarcomatous components, and its correlation with expression of the novel antibody SATB2 (marker of osteoblastic differentiation) in these osteosarcomatous foci...
February 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28215871/disease-behaviours-of-sows-naturally-infected-with-taenia-solium-in-tanzania
#20
Chiara Trevisan, Maria Vang Johansen, Ernatus Martin Mkupasi, Helena Aminel Ngowi, Björn Forkman
Neurocysticercosis (NCC) is a disease caused by the zoonotic parasite Taenia solium lodging in the central nervous system. Both humans and pigs can get NCC. The impact of the disease in pigs has so far been little explored. The aim of this study was to describe the effect of NCC on social and feeding behaviours as well as the pattern of activity as indicators of reduced welfare in naturally infected sows. In total 13 T. solium naturally infected and 15 non-infected control sows were videotaped for 2 consecutive weeks using close circuit television cameras at research facilities at Sokoine University of Agriculture, Morogoro, Tanzania...
February 15, 2017: Veterinary Parasitology
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