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https://www.readbyqxmd.com/read/28647870/prothrombotic-genetic-risk-factors-in-patients-with-very-early-st-segment-elevation-myocardial-infarction
#1
Loukianos S Rallidis, Argyri Gialeraki, Georgios Tsirebolos, Stylianos Tsalavoutas, Maria Rallidi, Efstathios Iliodromitis
The contribution of prothrombotic genetic risk factors in the pathogenesis of premature acute myocardial infarction (MI) is controversial. We examined the prevalence of prothrombotic polymorphisms (G1691A of factor V gene [FV Leiden] and G20210A of prothrombin [FII] gene), deficiencies of natural anticoagulants (protein C, protein S and antithrombin III) and antiphospholipid syndrome (APS) in patients with early ST-segment elevation MI (STEMI). We recruited 255 consecutive patients who had survived a STEMI ≤ 35 years of age (224 men)...
June 24, 2017: Journal of Thrombosis and Thrombolysis
https://www.readbyqxmd.com/read/28647777/the-effect-of-low-and-high-power-microwave-irradiation-on-in-vitro-grown-sequoia-plants-and-their-recovery-after-cryostorage
#2
A Halmagyi, E Surducan, V Surducan
Two distinct microwave power levels and techniques have been studied in two cases: low-power microwave (LPM) irradiation on in vitro Sequoia plants and high-power microwave (HPM) exposure on recovery rates of cryostored (-196°C) Sequoia shoot apices. Experimental variants for LPM exposure included: (a) in vitro plants grown in regular conditions (at 24 ± 1°C during a 16-h light photoperiod with a light intensity of 39.06 μEm(-2) s(-1) photosynthetically active radiation), (b) in vitro plants grown in the anechoic chamber with controlled environment without microwave irradiation, and (c) in vitro plants grown in the anechoic chamber with LPM irradiation for various times (5, 15, 30, 40 days)...
June 24, 2017: Journal of Biological Physics
https://www.readbyqxmd.com/read/28647731/recovery-of-vocal-fold-epithelium-after-acute-phonotrauma
#3
Bernard Rousseau, Tsuyoshi Kojima, Carolyn K Novaleski, Emily E Kimball, Carla V Valenzuela, Masanobu Mizuta, James J Daniero, C Gaelyn Garrett, M Preeti Sivasankar
We investigated the timeline of tissue repair of vocal fold epithelium after acute vibration exposure using an in vivo rabbit model. Sixty-five New Zealand white breeder rabbits were randomized to 120 min of modal- or raised-intensity phonation. After the larynges were harvested at 0, 4, 8, and 24 h, and at 3 and 7 days, the vocal fold tissue was evaluated using electron microscopy and quantitative real-time polymerase chain reaction. There was an immediate decrease in the microprojection depth and height following raised-intensity phonation, paired with upregulation of cyclooxygenase-2...
June 24, 2017: Cells, Tissues, Organs
https://www.readbyqxmd.com/read/28647593/features-of-emotional-and-social-behavioral-phenotypes-of-calsyntenin2-knockout-mice
#4
S V Ranneva, K S Pavlov, A V Gromova, T G Amstislavskaya, T V Lipina
Calsyntenin-2 (Clstn2) is the synaptic protein that belongs to the super family of cadherins, playing an important role in learning and memory. We recently reported that Clstn2 knockout mice (Clstn2-KO) have a deficit of GABAergic interneurons coupled with hyperactivity and deficient spatial memory. Given, that impaired functioning of GABA receptors is linked to several psychopathologies, including anxiety and autism, we sought to further characterize Clstn2-KO mice with respect to emotional and social behavior...
June 21, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28647337/comparison-of-bayesian-regression-models-and-partial-least-squares-regression-for-the-development-of-infrared-prediction-equations
#5
V Bonfatti, F Tiezzi, F Miglior, P Carnier
The objective of this study was to compare the prediction accuracy of 92 infrared prediction equations obtained by different statistical approaches. The predicted traits included fatty acid composition (n = 1,040); detailed protein composition (n = 1,137); lactoferrin (n = 558); pH and coagulation properties (n = 1,296); curd yield and composition obtained by a micro-cheese making procedure (n = 1,177); and Ca, P, Mg, and K contents (n = 689). The statistical methods used to develop the prediction equations were partial least squares regression (PLSR), Bayesian ridge regression, Bayes A, Bayes B, Bayes C, and Bayesian least absolute shrinkage and selection operator...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647329/structural-changes-induced-by-high-pressure-processing-in-micellar-casein-and-milk-protein-concentrates
#6
Lee Cadesky, Markus Walkling-Ribeiro, Kyle T Kriner, Mukund V Karwe, Carmen I Moraru
Reconstituted micellar casein concentrates and milk protein concentrates of 2.5 and 10% (wt/vol) protein concentration were subjected to high-pressure processing at pressures from 150 to 450 MPa, for 15 min, at ambient temperature. The structural changes induced in milk proteins by high-pressure processing were investigated using a range of physical, physicochemical, and chemical methods, including dynamic light scattering, rheology, mid-infrared spectroscopy, scanning electron microscopy, proteomics, and soluble mineral analyses...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647323/mechanism-of-plant-mediated-synthesis-of-silver-nanoparticles-a-review-on-biomolecules-involved-characterisation-and-antibacterial-activity
#7
REVIEW
S Rajeshkumar, L V Bharath
Engineering a reliable and eco-accommodating methodology for the synthesis of metal nanoparticles is a crucial step in the field of nanotechnology. Plant-mediated synthesis of metal nanoparticles has been developed as a substitute to defeat the limitations of conventional synthesis approaches such as physical and chemical methods. Biomolecules, such as proteins, amino acids, enzymes, flavonoids, and terpenoids from several plant extracts have been used as a stabilising and reducing agents for the synthesis of AgNPs...
June 21, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28647124/putative-protein-vc0395_0300-from-vibrio-cholerae-is-a-diguanylate-cyclase-with-a-role-in-biofilm-formation
#8
Divya Bandekar, Om Prakash Chouhan, Swati Mohapatra, Mousumi Hazra, Saugata Hazra, Sumit Biswas
The hallmark of the lifecycle of Vibrio cholerae is its ability to switch between two lifestyles - the sessile, non-pathogenic form and the motile, infectious form in human hosts. One of these changes is in the formation of surface biofilms, when in sessile aquatic habitats. The cell-cell interactions within a V. cholerae biofilm are stabilized by the production of an exopolysachharide (EPS) matrix, which in turn is regulated by the ubiquitous secondary messenger, cyclic di-GMP (c-di-GMP), synthesized by proteins containing GGD(/E)EF domains in all prokaryotic systems...
September 2017: Microbiological Research
https://www.readbyqxmd.com/read/28646810/synergistic-anti-breast-cancer-effects-of-combined-treatment-with-oleuropein-and-doxorubicin-in-vivo
#9
Maha H Elamin, Abdelsalam B Elmahi, Maha H Daghestani, Ebtesam M Al-Olayan, Reem A Al-Ajmi, Afrah F Alkhuriji, Sherifa S Hamed, Manal F Elkhadragy
Context • Breast cancer is a leading cause of cancer fatalities among women worldwide. Of the more than 80% of patients who receive adjuvant chemotherapy, approximately 40% relapse. The majority of these patients die of disseminated metastatic disease, which emphasizes the need for new therapeutic strategies Objective • The study intended to investigate the anticancer effects of oleuropein (OL) and doxorubicin (DOX) individually and in combination on breast tumor xenografts and also to evaluate the molecular pathways involved...
June 23, 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28646756/protein-functionalization-of-zno-nanostructure-exhibits-selective-and-enhanced-toxicity-to-breast-cancer-cells-through-oxidative-stress-based-cell-death-mechanism
#10
Sailendra Mahanta, S Prathap, Deependra Kumar Ban, Subhankar Paul
Zinc oxide nanostructure (ZnONS) was chemically synthesized and functionalized (FZnONSBLA) with a small protein bovine α-lactalbumin (BLA) by chemical cross-linking methods. Both nano-structures were characterized using various techniques such as electron microscopy, dynamic light scattering (DLS), UV-Vis spectroscopy, FT-IR, photo-luminescence and X-ray diffraction. Electron microscopy and DLS analysis revealed their (ZnONS and FZnONSBLA) average size of 200nm and 450nm, respectively. When cytotoxicity of both the nanostructures were assessed in breast cancer cells MCF-7 and MDAMB231 by MTT assay and PI/Annexin V staining (FACS), FZnONSBLA demonstrated higher cell death than ZnONS primarily due to generation of intracellular reactive oxygen species (ROS)...
June 15, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28646754/free-energy-analysis-of-cell-spreading
#11
Eóin McEvoy, Vikram S Deshpande, Patrick McGarry
In this study we present a steady-state adaptation of the thermodynamically motivated stress fiber (SF) model of Vigliotti et al. (2015). We implement this steady-state formulation in a non-local finite element setting where we also consider global conservation of the total number of cytoskeletal proteins within the cell, global conservation of the number of binding integrins on the cell membrane, and adhesion limiting ligand density on the substrate surface. We present a number of simulations of cell spreading in which we consider a limited subset of the possible deformed spread-states assumed by the cell in order to examine the hypothesis that free energy minimization drives the process of cell spreading...
June 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28646552/targeting-histone-deacetylase-4-ubc9-impairs-dna-repair-for-radiosensitization-of-hepatocellular-carcinoma-cells
#12
Chiao-Ling Tsai, Wei-Lin Liu, Feng-Ming Hsu, Po-Sheng Yang, Ruoh-Fang Yen, Kai-Yuan Tzen, Ann-Lii Cheng, Pei-Jer Chen, Jason Chia-, Hsien Cheng
Several strategies to improve the efficacy of radiation therapy against hepatocellular carcinoma (HCC) have been investigated. One approach was to develop radiosensitizing compounds. Because histone deacetylase 4 (HDAC4) is highly expressed in liver cancer and known to regulate oncogenesis through chromatin structure remodeling and controlling protein access to DNA, we postulated that HDAC4 inhibition might enhance radiation's effect on HCC cells. HCC cell lines (Huh7 and PLC5) and an ectopic xenograft were pretreated with HDAC inhibitor or shRNA to knock down expression of HDAC4, and then irradiated (2...
June 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28646336/nogo-a-antibodies-enhance-axonal-repair-and-remyelination-in-neuro-inflammatory-and-demyelinating-pathology
#13
Benjamin V Ineichen, Sandra Kapitza, Christiane Bleul, Nicolas Good, Patricia S Plattner, Maryam S Seyedsadr, Julia Kaiser, Marc P Schneider, Björn Zörner, Roland Martin, Michael Linnebank, Martin E Schwab
Two hallmarks of chronic multiple sclerosis lesions are the absence of significant spontaneous remyelination and primary as well as secondary neurodegeneration. Both characteristics may be influenced by the presence of inhibitory factors preventing myelin and neuronal repair. We investigated the potential of antibodies against Nogo-A, a well-known inhibitory protein for neuronal growth and plasticity, to enhance neuronal regeneration and remyelination in two animal models of multiple sclerosis. We induced a targeted experimental autoimmune encephalomyelitis (EAE) lesion in the dorsal funiculus of the cervical spinal cord of adult rats resulting in a large drop of skilled forelimb motor functions...
June 23, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28646232/inhibition-of-erk1-2-restores-gsk3%C3%AE-activity-and-protein-synthesis-levels-in-a-model-of-tuberous-sclerosis
#14
Rituraj Pal, Vitaliy V Bondar, Carolyn J Adamski, George G Rodney, Marco Sardiello
Tuberous sclerosis (TS) is a multi-organ autosomal dominant disorder that is best characterized by neurodevelopmental deficits and the presence of benign tumors. TS pathology is caused by mutations in tuberous sclerosis complex (TSC) genes and is associated with insulin resistance, decreased glycogen synthase kinase 3β (GSK3β) activity, activation of the mammalian target of rapamycin complex 1 (mTORC1), and subsequent increase in protein synthesis. Here, we show that extracellular signal-regulated kinases (ERK1/2) respond to insulin stimulation and integrate insulin signaling to phosphorylate and thus inactivate GSK3β, resulting in increased protein synthesis that is independent of Akt/mTORC1 activity...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646021/eif1ax-and-nras-mutations-co-occur-and-cooperate-in-low-grade-serous-ovarian-carcinomas
#15
Dariush Etemadmoghadam, Walid J Azar, Ying Lei, Tania Moujaber, Dale W Garsed, Catherine Kennedy, Sian Fereday, Chris Mitchell, Yoke-Eng Chiew, Joy Hendley, Australian Ovarian Cancer Study Group, Raghwa Sharma, Paul Harnett, Jason Li, Elizabeth L Christie, Ann-Marie Patch, Joshy George, George Au-Yeung, Gisela Mir Arnau, Timothy P Holloway, Timothy Semple, John V Pearson, Nicola Waddell, Sean Grimmond, Martin Köbel, Helen Rizos, Ivan Lomakin, David D L Bowtell, Anna DeFazio
Low-grade serous ovarian carcinomas (LGSC) are associated with a poor response to chemotherapy and are molecularly characterized by RAS pathway activation. Using exome and whole genome sequencing we identified recurrent mutations in the protein translational regulator EIF1AX and in NF1, USP9X, KRAS, BRAF and NRAS. RAS pathway mutations were mutually exclusive, however we found significant co-occurrence of mutations in NRAS and EIF1AX Missense EIF1AX mutations were clustered at the N-terminus of the protein in a region associated with its role in ensuring translational initiation fidelity...
June 23, 2017: Cancer Research
https://www.readbyqxmd.com/read/28644254/sporadic-creutzfeldt-jakob-disease-with-unilateral-symptoms-in-the-setting-of-metastatic-renal-cell-carcinoma
#16
Kyle C Rossi, Christine M Stahl, Pengfei Zhang, John W Liang, Lara V Marcuse, Fred Lublin
INTRODUCTION: Although it is not rare for magnetic resonance imaging findings in Creutzfeldt-Jakob disease to be asymmetric, unilateral clinical syndromes are uncommonly reported and may confound diagnosis. In addition, neurological paraneoplastic syndromes are not common in renal cell carcinoma, though there are cases reported, often without an offending antibody isolated. CASE REPORT: A 66-year-old man was admitted with 1 month of left-sided numbness and "loss of control" of the left arm...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28643914/the-use-of-cell-culture-platforms-to-identify-novel-markers-of-bone-and-dentin-resorption
#17
W J Rody, O Krokhin, V Spicer, C A Chamberlain, M Chamberlain, K P McHugh, S M Wallet, A K Emory, J D Crull, L S Holliday
OBJECTIVES: 1) To test the hypothesis that there would be proteomic differences in the composition of exosomes isolated from osteoclasts and odontoclasts and 2) to determine the clinical usefulness of these in vitro biomarker candidates. MATERIALS AND METHODS: Mouse bone marrow-derived precursors were cultured on either dentin or bone slices and allowed to mature and begin resorption. Exosomes were isolated from cell culture media and characterized by mass spectrometry...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643779/drugging-the-undruggable-cancer-targets
#18
REVIEW
Chi V Dang, E Premkumar Reddy, Kevan M Shokat, Laura Soucek
The term 'undruggable' was coined to describe proteins that could not be targeted pharmacologically. However, progress is being made to 'drug' many of these targets, and therefore more appropriate terms might be 'difficult to drug' or 'yet to be drugged'. Many desirable targets in cancer fall into this category, including the RAS and MYC oncogenes, and pharmacologically targeting these intractable proteins is now a key challenge in cancer research that requires innovation and the development of new technologies...
June 23, 2017: Nature Reviews. Cancer
https://www.readbyqxmd.com/read/28643621/linoleic-acid-%C3%AE-linolenic-acid-and-enterolactone-affect-lipid-oxidation-and-expression-of-lipid-metabolism-and-antioxidant-related-genes-in-hepatic-tissue-of-dairy-cows
#19
Émilie Fortin, Richard Blouin, Jérôme Lapointe, Hélène V Petit, Marie-France Palin
Although beneficial effects have been attributed to PUFA supplementation in high-yielding dairy cows, diets rich in PUFA may also increase oxidative stress in tissues such as the liver. To fully exploit the health benefits of PUFA, we believe that the addition of natural antioxidants could help in preventing oxidative damage. Using an in vitro precision-cut liver slices (PCLS) tissue culture system, we investigated the effects of different linoleic acid (LA, n-6):α-linolenic acid (ALA, n-3) ratios (LA:ALA ratio of 4, LA:ALA ratio of 15 and LA:ALA ratio of 25) in the presence or absence of the antioxidant enterolactone (ENL) on (1) the mRNA abundance of genes with key roles in hepatic lipid metabolism, oxidative stress response and inflammatory processes, (2) oxidative damages to lipids and proteins and (3) superoxide dismutase activity in early-lactating dairy cows...
May 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28643448/post-conditioning-with-metformin-attenuates-apoptotic-events-in-cardiomyoblasts-associated-with-ischemic-reperfusion-injury
#20
Rajesh Ramachandran, Mini S
Ischemic post-conditioning is considered as a potent method to combat ischemic reperfusion injury than pre-conditioning since the latter is non predictive and risky. Rapid initiation of reperfusion with potent anti oxidant compound can be one of the most effective treatments to reduce the infract size and behavioural deficits as a result of ischemic insult. Apoptosis/Necrotic events undisputedly hold significant role in determining the fate of cardiomyocytes post ischemic injury but current studies are speculative regrading the role of post-conditioning in maintaining cellular homeostasis...
June 23, 2017: Cardiovascular Therapeutics
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