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https://www.readbyqxmd.com/read/28916750/comprehensive-multiregional-analysis-of-molecular-heterogeneity-in-bladder-cancer
#1
Mathilde Borg Houlberg Thomsen, Iver Nordentoft, Philippe Lamy, Søren Vang, Line Reinert, Christophe Kamungu Mapendano, Søren Høyer, Torben F Ørntoft, Jørgen Bjerggaard Jensen, Lars Dyrskjøt
Genetic alterations identified in adjacent normal appearing tissue in bladder cancer patients are indicative of a field disease. Here we assessed normal urothelium transformation and intra-tumour heterogeneity (ITH) in four patients with bladder cancer. Exome sequencing identified private acquired mutations in a lymph node metastasis and local recurrences. Deep re-sequencing revealed presence of at least three and four subclones in two patients with multifocal disease, while no demarcation of subclones was identified in the two patients with unifocal disease...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28902909/the-cytoprotective-protein-clusterin-is-overexpressed-in-hypergastrinemic-rodent-models-of-oxyntic-preneoplasia-and-promotes-gastric-cancer-cell-survival
#2
Pål Vange, Torunn Bruland, Berit Doseth, Reidar Fossmark, Mirta M L Sousa, Vidar Beisvag, Øystein Sørdal, Gunnar Qvigstad, Helge L Waldum, Arne K Sandvik, Ingunn Bakke
The cytoprotective protein clusterin is often dysregulated during tumorigenesis, and in the stomach, upregulation of clusterin marks emergence of the oxyntic atrophy (loss of acid-producing parietal cells)-associated spasmolytic polypeptide-expressing metaplasia (SPEM). The hormone gastrin is important for normal function and maturation of the gastric oxyntic mucosa and hypergastrinemia might be involved in gastric carcinogenesis. Gastrin induces expression of clusterin in adenocarcinoma cells. In the present study, we examined the expression patterns and gastrin-mediated regulation of clusterin in gastric tissue from: humans; rats treated with proton pump (H+/K+-ATPase) inhibitors and/or a gastrin receptor (CCK2R) antagonist; H+/K+-ATPase β-subunit knockout (H/K-β KO) mice; and Mongolian gerbils infected with Helicobacter pylori and given a CCK2R antagonist...
2017: PloS One
https://www.readbyqxmd.com/read/28887236/iatrogenic-major-venous-injury-is-associated-with-increased-morbidity-of-aortic-reconstruction
#3
Sachinder S Hans, Steven Vang, Gul Sachwani-Daswani
BACKGROUND: Major venous injury during open aortic reconstruction though uncommon often result in sudden and massive blood loss resulting in increased morbidity and mortality. This study details the etiology, management, and outcome of such injuries. METHODS: A retrospective review of 945 patients (1981-2017) undergoing aortic reconstruction from 2 mid-sized (350 bed teaching hospitals). Seven hundred twenty-three patients (76.5%) underwent open abdominal aortic aneurysm (AAA) repair/iliac aneurysm repair, 222 patients (23...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28885115/a-9-week-jaques-dalcroze-eurhythmics-intervention-improves-single-and-dual-task-gait-speed-in-community-dwelling-older-people
#4
Lisa Ferguson-Stegall, Mandy Vang, Anthony S Wolfe, Kathy M Thomsen
BACKGROUND: Falls are a major public health concern among older adults, and most occur while walking, especially under dualtask conditions. Jaques-Dalcroze eurhythmics (JDE) is a music-based movement training program that emphasizes multitask coordinated movement. A previous 6-mo JDE study in older people demonstrated improved gait and balance; however, the effects of short-term JDE interventions on fall risk-related outcomes are largely unknown. We conducted a preliminary investigation on whether a 9-week JDE intervention improved gait and stability in a community-dwelling older cohort, hypothesizing that improvements would occur in all outcome measures...
September 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28877869/hemoglobin-polymerization-via-disulfide-bond-formation-in-the-hypoxia-tolerant-turtle-trachemys-scripta-implications-for-antioxidant-defense-and-o2-transport
#5
Asbjørn Graver Petersen, Steen Vang Petersen, Sebastian Frische, Srdja Drakulic, Monika M Golas, Bjoern Sander, Angela Fago
The ability of many reptilian hemoglobins (Hbs) to form high-molecular weight polymers, albeit known for decades, has not been investigated in detail. Given that turtle Hbs often contain a high number of cysteine (Cys), potentially contributing to the red blood cell defense against reactive oxygen species, we have examined whether polymerization of Hb could occur via intermolecular disulfide bonds in red blood cells of freshwater turtle Trachemys scripta, a species that is highly tolerant of hypoxia and oxidative stress...
September 6, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28877227/hemocyte-mediated-phagocytosis-differs-between-honey-bee-apis-mellifera-worker-castes
#6
Eva Marit Hystad, Heli Salmela, Gro Vang Amdam, Daniel Münch
Honey bees as other insects rely on the innate immune system for protection against diseases. The innate immune system includes the circulating hemocytes (immune cells) that clear pathogens from hemolymph (blood) by phagocytosis, nodulation or encapsulation. Honey bee hemocyte numbers have been linked to hemolymph levels of vitellogenin. Vitellogenin is a multifunctional protein with immune-supportive functions identified in a range of species, including the honey bee. Hemocyte numbers can increase via mitosis, and this recruitment process can be important for immune system function and maintenance...
2017: PloS One
https://www.readbyqxmd.com/read/28873354/mutation-of-nras-is-a-rare-genetic-event-in-ovarian-low-grade-serous-carcinoma
#7
Deyin Xing, Yohan Suryo Rahmanto, Felix Zeppernick, Charlotte G Hannibal, Susanne K Kjaer, Russell Vang, Ie-Ming Shih, Tian-Li Wang
Activating mutations involving the members of the RAS signaling pathway, including KRAS, NRAS, and BRAF, have been reported in ovarian low-grade serous carcinoma and its precursor lesion, serous borderline tumor (SBT). Whether additional genetic alterations in the RAS oncogene family accumulate during the progression of serous borderline tumor (SBT) to invasive low grade serous carcinoma (LGSC) remains largely unknown. While mutations of KRAS and BRAF occur at a very early stage of progression, even preceding the development of SBT, additional driving events, such as NRAS mutations, have been postulated to facilitate progression...
September 2, 2017: Human Pathology
https://www.readbyqxmd.com/read/28851628/pde8-controls-cd4-t-cell-motility-through-the-pde8a-raf-1-kinase-signaling-complex
#8
Chaitali P Basole, Rebecca K Nguyen, Katie Lamothe, Amanda Vang, Robert Clark, George S Baillie, Paul M Epstein, Stefan Brocke
The levels of cAMP are regulated by phosphodiesterase enzymes (PDEs), which are targets for the treatment of inflammatory disorders. We have previously shown that PDE8 regulates T cell motility. Here, for the first time, we report that PDE8A exerts part of its control of T cell function through the V-raf-1 murine leukemia viral oncogene homolog 1 (Raf-1) kinase signaling pathway. To examine T cell motility under physiologic conditions, we analyzed T cell interactions with endothelial cells and ligands in flow assays...
August 26, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28811888/performance-test-and-verification-of-an-off-the-shelf-automated-avian-radar-tracking-system
#9
Roel May, Yngve Steinheim, Pål Kvaløy, Roald Vang, Frank Hanssen
Microwave radar is an important tool for observation of birds in flight and represents a tremendous increase in observation capability in terms of amount of surveillance space that can be covered at relatively low cost. Based on off-the-shelf radar hardware, automated radar tracking systems have been developed for monitoring avian movements. However, radar used as an observation instrument in biological research has its limitations that are important to be aware of when analyzing recorded radar data. This article describes a method for exploring the detection capabilities of a dedicated short-range avian radar system used inside the operational Smøla wind-power plant...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28789929/commentary-on-comprehensive-transcriptional-analysis-of-early-stage-urothelial-carcinoma-hedegaard-j-lamy-p-nordentoft-i-algaba-f-h%C3%A3-yer-s-ulh%C3%A3-i-bp-vang-s-reinert-t-hermann-gg-mogensen-k-thomsen-mb-nielsen-mm-marquez-m-segersten-u-aine-m-h%C3%A3-glund-m-birkenkamp
#10
Byron H Lee
Non-muscle-invasive bladder cancer (NMIBC) is a heterogeneous disease with widely different outcomes. We performed a comprehensive transcriptional analysis of 460 early-stage urothelial carcinomas and showed that NMIBC can be subgrouped into 3 major classes with basal- and luminal-like characteristics and different clinical outcomes. Large differences in biological processes such as the cell cycle, epithelial-mesenchymal transition, and differentiation were observed. Analysis of transcript variants revealed frequent mutations in genes encoding proteins involved in chromatin organization and cytoskeletal functions...
August 5, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28771275/latency-transition-of-plasminogen-activator-inhibitor-type-1-is-evolutionarily-conserved
#11
Agnieszka Jendroszek, Malene S Sønnichsen, Andrés C Muñoz, Kato Leyman, Anni Christensen, Steen Vang Petersen, Tobias Wang, Christian Bendixen, Frank Panitz, Peter A Andreasen, Jan K Jensen
Plasminogen activator inhibitor type 1 (PAI-1) is a central regulator of fibrinolysis and tissue remodelling. PAI-1 belongs to the serpin superfamily and unlike other inhibitory serpins undergoes a spontaneous inactivation process under physiological conditions, termed latency transition. During latency transition the solvent exposed reactive centre loop is inserted into the central β-sheet A of the molecule, and is no longer accessible to reaction with the protease. More than three decades of research on mammalian PAI-1 has not been able to clarify the evolutionary advantage and physiological relevance of latency transition...
August 30, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28767291/improving-asthma-control-through-asthma-action-plans-a-quality-improvement-project-at-a-midwest-community-clinic
#12
Laila S Akhter, Jeyn L Monkman, Gao Vang, Jeanne Pfeiffer
This urban community clinic had poor asthma outcomes compared to the state of Minnesota. The standard of care supports an annual Asthma Action Plan (AAP). However, the majority of patients at this clinic had not received one. This quality improvement project aimed to improve asthma control, measured by an asthma control test of at least 20, through AAP implementation supported by all team members. The clinic's interdisciplinary champion group implemented workflow changes via practice facilitation and Plan-Do-Study-Act cycles...
July 2017: Journal of Community Health Nursing
https://www.readbyqxmd.com/read/28767061/bifurcatriol-a-new-antiprotozoal-acyclic-diterpene-from-the-brown-alga-bifurcaria-bifurcata
#13
Vangelis Smyrniotopoulos, Christian Merten, Marcel Kaiser, Deniz Tasdemir
Linear diterpenes that are commonly found in brown algae are of high chemotaxonomic and ecological importance. This study reports bifurcatriol (1), a new linear diterpene featuring two stereogenic centers isolated from the Irish brown alga Bifurcariabifurcata. The gross structure of this new natural product was elucidated based on its spectroscopic data (IR, 1D and 2D-NMR, HRMS). Its absolute configuration was identified by experimental and computational vibrational circular dichroism (VCD) spectroscopy, combined with the calculation of (13)C-NMR chemical shielding constants...
August 2, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28746875/kmt5a-controls-hepatic-metabolic-pathways-by-facilitating-rna-pol-ii-release-from-promoter-proximal-regions
#14
Kostas C Nikolaou, Panagiotis Moulos, Vangelis Harokopos, George Chalepakis, Iannis Talianidis
H4K20 monomethylation maintains genome integrity by regulating proper mitotic condensation, DNA damage response, and replication licensing. Here, we show that, in non-dividing hepatic cells, H4K20Me1 is specifically enriched in active gene bodies and dynamically regulated by the antagonistic action of Kmt5a methylase and Kdm7b demethylase. In liver-specific Kmt5a-deficient mice, reduced levels of H4K20Me1 correlated with reduced RNA Pol II release from promoter-proximal regions. Genes regulating glucose and fatty acid metabolism were most sensitive to impairment of RNA Pol II release...
July 25, 2017: Cell Reports
https://www.readbyqxmd.com/read/28743955/early-synaptic-dysfunction-induced-by-%C3%AE-synuclein-in-a-rat-model-of-parkinson-s-disease
#15
Jenny-Ann Phan, Kathrine Stokholm, Justyna Zareba-Paslawska, Steen Jakobsen, Kim Vang, Albert Gjedde, Anne M Landau, Marina Romero-Ramos
Evidence suggests that synapses are affected first in Parkinson's disease (PD). Here, we tested the claim that pathological accumulation of α-synuclein, and subsequent synaptic disruption, occur in absence of dopaminergic neuron loss in PD. We determined early synaptic changes in rats that overexpress human α-synuclein by local injection of viral-vectors in midbrain. We aimed to achieve α-synuclein levels sufficient to induce terminal pathology without significant loss of nigral neurons. We tested synaptic disruption in vivo by analyzing motor defects and binding of a positron emission tomography (PET) radioligand to the vesicular monoamine transporter 2, (VMAT2), [(11)C]dihydrotetrabenazine (DTBZ)...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28734846/matrix-gla-protein-t-138c-polymorphism-is-associated-with-carotid-intima-media-thickness-and-predicts-mortality-in-patients-with-diabetic-nephropathy
#16
Stefanos Roumeliotis, Athanasios Roumeliotis, Stylianos Panagoutsos, Efstathia Giannakopoulou, Nikolaos Papanas, Vangelis G Manolopoulos, Ploumis Passadakis, Anna Tavridou
AIMS: We sought to determine the predictive value of Matrix Gla Protein MGP T-138C polymorphism in relation to all-cause mortality, cardiovascular mortality and cardiovascular events in patients with diabetic nephropathy (DN). METHODS: MGP T-138C polymorphism was assessed in 40 diabetic patients without nephropathy and 118 patients at different stages of DN, including patients on hemodialysis. Measurement of carotid intima-media thickness (cIMT) was performed using real-time B-mode ultrasonography...
October 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28728886/effect-of-a-physical-activity-intervention-on-supar-levels-a-randomized-controlled-trial
#17
Christopher Rohde, Christoffer Polcwiartek, Eivind Andersen, Torkel Vang, Jimmi Nielsen
OBJECTIVES: Soluble urokinase-type plasminogen activator receptor (suPAR) is a novel inflammatory marker, associated with lifestyle diseases and mortality risk. No studies have investigated whether physical activity may reduce suPAR levels using a randomized controlled design. DESIGN AND METHODS: suPAR and C-reactive protein (CRP) levels were determined in blood samples from a previous randomized controlled trial with Pakistani immigrants in Norway, 2008. The study included physically inactive men that were randomized to an intervention group (supervised group exercises) or a control group and followed for 5 months...
July 4, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28724167/in-vitro-controlled-release-of-two-new-tuberculocidal-adamantane-aminoethers-from-solid-pharmaceutical-formulations-ii
#18
Marilena Vlachou, Angeliki Siamidi, Dimitrios Spaneas, Dimitrios Lentzos, Polixeni Ladia, Konstantina Anastasiou, Ioannis Papanastasiou, Angeliki-Sofia Foscolos, Markos-Orestis Georgiadis, Vangelis Karalis, Tahsin Kellici, Thomas Mavromoustakos
The aim of the present investigation was to develop matrix tablet formulations for the in vitro controlled release of two new tuberculocidal adamantane aminoethers (compounds III and IV), congeneric to the adamantane derivative SQ109, which is in final clinical trials, and aminoethers (I) and (II), using carefully selected excipients, such as polyvinylpyrrolidone, sodium alginate and lactose. The tablets were prepared using the direct compression method and dissolution experiments were conducted using the US Pharmacopoeia type II apparatus (paddle method) in gastric and intestinal fluids...
July 19, 2017: Drug Research
https://www.readbyqxmd.com/read/28718337/julius-thomsen-a-life-in-chemistry-and-beyond
#19
Vangelis Antzoulatos
No abstract text is available yet for this article.
July 18, 2017: Ambix
https://www.readbyqxmd.com/read/28714908/%C3%AE-etal-uptake-by-sunflower-helianthus-annuus-irrigated-with-water-polluted-with-chromium-and-nickel
#20
Vasiliki Stoikou, Vangelis Andrianos, Sotiris Stasinos, Marios G Kostakis, Sofia Attiti, Nikolaos S Thomaidis, Ioannis Zabetakis
The water aquifers of the regions of Asopos River in Viotia and Messapia in Evia (Greece) have been contaminated with hexavalent chromium (Cr (VI)) and bivalent nickel (Ni (II)). Given that these areas are the two biggest tuber producing regions of Greece, in our previous work, the cross-contamination of the food chain with these two heavy metals was quantified. In the present study, the potential of sunflower (Helianthus annuus) cultivation in these regions is evaluated. The scope of our study was to investigate the uptake of chromium and nickel by sunflower, in a greenhouse experiment...
July 17, 2017: Foods (Basel, Switzerland)
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