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https://www.readbyqxmd.com/read/28088838/re-evaluation-of-phenotypic-expression-in-differentiated-type-early-adenocarcinoma-of-the-stomach
#1
Masato Hayakawa, Ken Nishikura, Yoichi Ajioka, Yutaka Aoyagi, Shuji Terai
A total of 313 cases of differentiated-type early gastric adenocarcinomas, including 113 cases of small-sized carcinoma (5< × ≤10 mm) and 121 cases of microcarcinoma (0< × ≤5 mm), were examined immunohistochemically to clarify the phenotypic expressions. They were classified into four categories (gastric phenotype (G-type), intestinal phenotype, gastrointestinal phenotype, and null phenotype) by a two-step process: the phenotype based on an immunoprofile of mucin core proteins (MUCs) with CDX2 (w/...
January 15, 2017: Pathology International
https://www.readbyqxmd.com/read/28088789/gprc5a-knockout-mouse-lung-epithelial-cells-predicts-ceruloplasmin-lipocalin-2-and-periostin-as-potential-biomarkers-at-early-stages-of-lung-tumorigenesis
#2
Beibei Sun, Wenzheng Guo, Song Hu, Feng Yao, Keke Yu, Jie Xing, Ronghua Wang, Hongyong Song, Yueling Liao, Tong Wang, Pengfei Jiang, Baohui Han, Jiong Deng
Lung cancer is the leading cause of cancer death. As most of lung cancer patients were diagnosed with the advanced stage, early detection is considered as the most effective strategy to reduce high mortality. Thus, it is desirable to identify specific biomarkers at early stages of lung tumorigenesis. GPRC5A is a lung tumor suppressor gene. GPRC5A deficiency is linked to lung cancer development. We hyposthesized that, dysregulated gene expression that results from Gprc5a deficiency may provide potential biomarkers at early stages of lung tumorigenesis...
January 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28088751/chip-based-digital-surface-plasmon-resonance-sensing-platform-for-ultrasensitive-biomolecular-detection
#3
Ming-Yang Pan, Kuang-Li Lee, Likarn Wang, Pei-Kuen Wei
A chip-based ultrasensitive surface plasmon resonance (SPR) sensor in a checkerboard nanostructure on plastic substrates is presented for digital detection. The sensing elements on the checkerboard are composed of silver-capped nanoslit arrays, which were fabricated using the thermal-embossing nanoimprint method, to meet the demand for low-cost and rapid fabrication. Sharp Fano resonances in the optimized nanoslit arrays provide high-intensity sensitivities (20,000% per refractive index unit), with an element size of 12...
January 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28088698/metformin-enhancing-the-antitumor-efficacy-of-carboplatin-against-ehrlich-solid-carcinoma-grown-in-diabetic-mice-effect-on-igf-1-and-tumoral-expression-of-igf-1-receptors
#4
Dina M Abo-Elmatty, Eman A Ahmed, Mona K Tawfik, Seham A Helmy
Diabetes has been listed as a risk factor for various types of cancer. Cancer cell development can be promoted by increased levels of IGF-1 and hyperinsulinemia that are associated with diabetes type II. Metformin is an anti-diabetic agent and its potential antitumor impact has become the objective of numerous studies. In this vein, we hypothesize that using metformin in diabetes type II mice may synergistic with carboplatin for reducing the risk of cancer. Therefore, the study aimed to evaluate the in vivo antitumor activity of metformin against solid EAC tumor growth in female diabetic mice and its potential pro-apoptotic and anti-proliferative effects with clarification of its inconclusive biological mechanisms...
January 12, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28088643/molecular-mechanisms-of-bio-catalysis-of-heme-extraction-from-hemoglobin
#5
Serzhan Sakipov, Olga Rafikova, Maria G Kurnikova, Ruslan Rafikov
Red blood cell hemolysis in sickle cell disease (SCD) releases free hemoglobin. Extracellular hemoglobin and its degradation products, free heme and iron, are highly toxic due to oxidative stress induction and decrease in nitric oxide availability. We propose an approach that helps to eliminate extracellular hemoglobin toxicity in SCD by employing a bacterial protein system that evolved to extract heme from extracellular hemoglobin. NEAr heme Transporter (NEAT) domains from iron-regulated surface determinant proteins from Staphylococcus aureus specifically bind free heme as well as facilitate its extraction from hemoglobin...
January 7, 2017: Redox Biology
https://www.readbyqxmd.com/read/28088631/an-esipt-based-two-photon-fluorescent-probe-detection-of-hydrogen-peroxide-in-live-cells-and-tissues
#6
Liyi Zhou, Yongbo Peng, Qianqian Wang, Qinlu Lin
A variety of diseases associated with human aging, which have a strong oxidative stress, but connecting age-related diseases and oxidative stress of the basic molecular mechanisms still insufficiently understood. Oxidative stress origins from the unregulated production of reactive oxygen species (ROS), and oxidative damaging to tissues and organs from subsequent oxidation-reduction chemistry by cellular mismanagement. In particular, H2O2 is a major by-product of ROS in live organisms and a common marker for oxidative stress, and its dynamic equilibrium can have various physiological and pathological consequences...
January 9, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28088615/cloning-heterologous-expression-and-biochemical-characterization-of-a-non-specific-endoglucanase-family-12-from-aspergillus-terreus-nih2624
#7
Fernando Segato, Bruno Dias, Gabriela L Berto, Dyoni M de Oliveira, Flávio H M De Souza, Matheus Augusto R N da Silva, Ana Paula Citadini, Mario T Murakami, André R L Damásio, Fábio Márcio Squina, Igor Polikarpov
The cellulases from Glycoside Hydrolyses family 12 (GH12) play an important role in cellulose degradation and plant cell wall deconstruction being widely used in a number of bioindustrial processes. Aiming to contribute toward better comprehension of these class of the enzymes, here we describe a high-yield secretion of a endoglucanase GH12 from Aspegillus terreus (AtGH12), which was cloned and expressed in Aspergillus nidulans strain A773. The purified protein was used for complete biochemical and functional characterization...
January 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28088575/a-study-on-growth-and-pyrolysis-characteristics-of-microalgae-using-thermogravimetric-analysis-infrared-spectroscopy-and-synchrotron-fourier-transform-infrared-spectroscopy
#8
Fanghua Li, Srikanth Chakravartula Srivatsa, Warren Batchelor, Sankar Bhattacharya
This two-part study firstly investigated Tetraselmis suecica grown in different CO2 (0.04-15%v/v) concentration through indoor and outdoor cultivation systems. A high CO2 concentration led to a high lipid content, and low nitrogen and oxygen content, which are desirable for transport fuel production. Pyrolysis characteristics were investigated by TG-IR and synchrotron IR microscopy. The results show Tetraselmis suecica grown in 10%CO2 had the highest decomposition rate corresponding to more volatile products produced during the main thermal cracking stage and derived from protein-and lipid-corresponding functional groups...
January 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28088554/mir-99a-suppresses-proliferation-migration-invasion-and-induces-g1-phase-cell-cycle-arrest-via-targeting-igf-1r-pathway-in-renal-cell-carcinoma-786-0-and-os-rc-2-cells
#9
Bo Hao, Li Cui, Yi Gu, Bo Zhang, Min Wang, Hua Zhou, Renfang Xu, XiaoZhou He
OBJECTIVE: To explore the potential mechanism of microRNA-99a (miR-99a) and IGF-1R (insulin-like growth factor 1 receptor) accounting for RCC. MATERIALS AND METHODS: The RCC 786-O and OS-RC-2 cells were transfected with miR-99a mimics or small interfering RNA (siRNA) that silence the IGF-1R (IGF-1R-siRNA) to upregulate the expression of miR-99a and to downregulate the expression of IGF-1R. Real-time PCR and western-blot were used to detect the expression of proteins...
January 11, 2017: Urology
https://www.readbyqxmd.com/read/28088550/novel-involvement-of-mir-522-3p-in-high-mobility-group-box-1-induced-prostaglandin-reductase-1-expression-and-reduction-of-phagocytosis
#10
Gyeoung-Jin Kang, Hye-Ja Lee, Hyun Jung Byun, Eun Ji Kim, Hyun Ji Kim, Mi Kyung Park, Chang-Hoon Lee
Resolution of inflammation is important for physiological homeostasis. Chronic inflammatory diseases may be caused by abnormal resolution of inflammation. However, what causes a failure of inflammatory resolution is unclear. Here we investigated the involvement of high mobility group box 1 (HMGB1) protein in the control of inflammatory resolution as a 'anti-resolution factor'. We first confirmed the increased expression of HMGB1 and prostaglandin reductase 1 (PTGR1) in inflammatory conditions and HMGB1-mediated regulation of the expression of PTGR1...
January 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28088541/secretory-pathway-optimization-of-cho-producer-cells-by-co-engineering-of-the-mitosrna-1978-target-genes-cers2-and-tbc1d20
#11
Lisa A Pieper, Michaela Strotbek, Till Wenger, Martin Gamer, Monilola A Olayioye, Angelika Hausser
Chinese Hamster Ovary (CHO) cells are the most commonly used host for the production of biopharmaceuticals. Although transcription and translation engineering strategies have been employed to generate high-producer cell clones, the secretory pathway still remains a bottleneck in cellular productivity. In this study we show that ectopic expression of a human mitochondrial genome-encoded small RNA (mitosRNA-1978) in an IgG expressing CHO cell line strongly improved specific productivity by functioning in a microRNA-like fashion...
January 11, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28088526/subcutaneous-immunization-with-streptococcus-pneumoniae-gapdh-confers-effective-protection-in-mice-via-tlr2-and-tlr4
#12
Xiaoyu Sun, Jichao Wang, Jie Zhou, Hong Wang, Xiaofang Wang, Jingwen Wu, Yujuan He, Yibing Yin, Xuemei Zhang, Wenchun Xu
The surface localized Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of Streptococcus pneumoniae is best known as housekeeping protein. Currently, GAPDH has been recognized as moonlighting protein and virulent factor. Therefore, we investigate whether GAPDH can act as a suitable vaccine candidate protein to prevent pneumococcal infection. In this study, mice received subcutaneous vaccination with recombinant GAPDH followed by challenge with D39 and 19F showing higher survival rate and lower bacterial loads in nasal washes and lung homogenates than control...
January 12, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28088516/structural-study-of-the-effects-of-mutations-in-proteins-to-identify-the-molecular-basis-of-the-loss-of-local-structural-fluidity-leading-to-the-onset-of-autoimmune-diseases
#13
Ananya Ali, Semanti Ghosh, Angshuman Bagchi
Protein-Protein Interactions (PPIs) are crucial in most of the biological processes and PPI dysfunctions are known to be associated with the onsets of various diseases. One of such diseases is the auto-immune disease. Auto-immune diseases are one among the less studied group of diseases with very high mortality rates. Thus, we tried to correlate the appearances of mutations with their probable biochemical basis of the molecular mechanisms leading to the onset of the disease phenotypes. We compared the effects of the Single Amino Acid Variants (SAVs) in the wild type and mutated proteins to identify any structural deformities that might lead to altered PPIs leading ultimately to disease onset...
January 11, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28088503/evidence-for-splice-transcript-variants-of-tmem165-a-gene-involved-in-cdg
#14
Marie-Ange Krzewinski-Recchi, Sven Potelle, Anne Marie-Mir, Dorothée Vicogne, Eudoxie Dulary, Sandrine Duvet, Willy Morelle, Geoffroy de Bettignies, François Foulquier
BACKGROUND: Defects in TMEM165 gene cause a type-II Congenital Disorder of Glycosylation affecting Golgi glycosylation processes. TMEM165 patients exhibit psychomotor retardation, important osteoporosis, scoliosis, irregular epiphyses and thin bone cortex. Human TMEM165 protein is highly conserved in evolution and belongs to the family of UPF0016 membrane proteins which could be an unique group of Ca(2+)/H(+) antiporters regulating Ca(2+) and pH homeostasis and mainly localized in the Golgi apparatus...
January 11, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28088480/sensing-membrane-curvature-in-macroautophagy
#15
REVIEW
Nathan Nguyen, Vladimir Shteyn, Thomas J Melia
In response to intracellular stress events ranging from starvation to pathogen invasion, the cell activates one or more forms of macroautophagy. The key event in these related pathways is the de novo formation of a new organelle called the autophagosome, which surrounds and sequesters either random portions of the cytoplasm or selectively targets individual intracellular challenges. Thus the autophagosome is a flexible membrane platform with dimensions that ultimately depend upon the target cargo. The intermediate membrane, termed the phagophore or isolation membrane, is a cup-like structure with a clear concave face and a highly curved rim...
January 11, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28088477/selected-scorpion-toxin-exposures-induce-cytokine-release-in-human-peripheral-blood-mononuclear-cells
#16
Gerardo Corzo, Gerardo Pavel Espino-Solis
A cytokine screening on human peripheral blood mononuclear cells (PBMCs) stimulated with selected scorpion toxins (ScTx's) was performed in order to evaluate their effect on human immune cells. The ScTx's chosen for this report were three typical buthid scorpion venom peptides, one with lethal effects on mammals Centruroides suffussus suffusus toxin II (CssII), another, with lethal effects on insects and crustaceans Centruroides noxius toxin 5 (Cn5), and one more without lethal effects Tityus discrepans toxin (Discrepin)...
January 11, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28088457/preformulation-characterization-stabilization-and-formulation-design-for-the-acrylodan-labeled-glucose-binding-protein-sm4-ac
#17
Neha Sahni, Rajoshi Chaudhuri, John M Hickey, Prakash Manikwar, Ajit D'Souza, Andrew Metters, Sangeeta B Joshi, C Russell Middaugh, David B Volkin
This study describes the physicochemical characterization, stabilization and formulation design of SM4-AC, an acrylodan labeled glucose/galactose binding protein for use in a continuous glucose monitoring device. The physical stability profile of SM4-AC as a function of pH and temperature was monitored using a combination of biophysical techniques and the resulting physical stability profile was visualized using an empirical phase diagram. Forced degradation chemical stability studies (Asn deamidation, Met oxidation) of SM4-AC were performed using a combination of capillary isoelectric focusing (cIEF), peptide mapping and reversed phase high performance liquid chromatography (RP-HPLC)...
January 11, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28088421/the-influence-of-ultra-pasteurization-by-indirect-heating-versus-direct-steam-injection-on-skim-and-2-fat-milks
#18
A P Lee, D M Barbano, M A Drake
Fluid milk is traditionally pasteurized by high temperature, short time (HTST) pasteurization, which requires heating to at least 72°C for 15 s. Ultra-pasteurization (UP) extends milk shelf life and is defined as heating to at least 138°C for 2 s. The UP process can be done by indirect heating (IND) or by direct steam injection (DSI). The influence of these 2 UP methods on milk flavor has not been widely investigated. The objective of this study was to compare the effect of HTST, IND-UP, and DSI-UP on sensory perception of fluid milk...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088413/short-communication-associations-between-feed-push-up-frequency-feeding-and-lying-behavior-and-milk-yield-and-composition-of-dairy-cows
#19
E K Miller-Cushon, T J DeVries
Feeding management factors have great potential to influence activity patterns and feeding behavior of dairy cows, which may have implications for performance. The objectives of this study were to assess the effects of feed push-up frequency on the behavioral patterns of dairy cows, and to determine associations between behavior and milk yield and composition. Lactating Holstein dairy cows (n = 28, parity = 1.9 ± 1.1; mean ± SD) were housed in tiestalls, milked twice per day, and offered ad libitum access to water and a total mixed ration (containing, on a dry matter basis: 25% corn silage, 25% grass/alfalfa haylage, 30% high-moisture corn, and 20% protein/mineral supplement), provided twice per day...
January 11, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28088384/the-signalling-mechanisms-of-a-novel-mitochondrial-complex-i-inhibitor-prevent-lipid-accumulation-and-attenuate-tnf-%C3%AE-induced-insulin-resistance-in-vitro
#20
Siobhán Leonard, Laura M Tobin, John B C Findlay
RTC-1 has recently been identified as a member of a new class of anti-diabetic compounds acting through the inhibition of complex I of the mitochondrial respiratory chain (NADH:ubiquinone oxidoreductase) to improve glucose handling and inhibit weight gain in mice fed a high-fat diet (HFD). The exact mechanism by which the reduced activity of NADH:ubiquinone oxidoreductase, in response to RTC-1, promotes these improved metabolic parameters remains to be established. Through extensive in vitro analysis, new molecular insights into these downstream signalling pathways have been obtained...
January 11, 2017: European Journal of Pharmacology
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