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https://www.readbyqxmd.com/read/28442916/expression-and-activity-of-the-urokinase-plasminogen-activator-system-in-canine-primary-brain-tumors
#1
John H Rossmeisl, Kelli Hall-Manning, John L Robertson, Jamie N King, Rafael V Davalos, Waldemar Debinski, Subbiah Elankumaran
BACKGROUND: The expression of the urokinase plasminogen activator receptor (uPAR), a glycosylphosphatidylinositol-anchored protein family member, and the activity of its ligand, urokinase-type plasminogen activator (uPA), have been associated with the invasive and metastatic potentials of a variety of human brain tumors through their regulation of extracellular matrix degradation. Domesticated dogs develop naturally occurring brain tumors that share many clinical, phenotypic, molecular, and genetic features with their human counterparts, which has prompted the use of the dogs with spontaneous brain tumors as models to expedite the translation of novel brain tumor therapeutics to humans...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28436950/mre11-stability-is-regulated-by-ck2-dependent-interaction-with-r2tp-complex
#2
P von Morgen, K Burdova, T G Flower, N J O'Reilly, S J Boulton, S J Smerdon, L Macurek, Z Hořejší
The MRN (MRE11-RAD50-NBS1) complex is essential for repair of DNA double-strand breaks and stalled replication forks. Mutations of the MRN complex subunit MRE11 cause the hereditary cancer-susceptibility disease ataxia-telangiectasia-like disorder (ATLD). Here we show that MRE11 directly interacts with PIH1D1, a subunit of heat-shock protein 90 cochaperone R2TP complex, which is required for the assembly of large protein complexes, such as RNA polymerase II, small nucleolar ribonucleoproteins and mammalian target of rapamycin complex 1...
April 24, 2017: Oncogene
https://www.readbyqxmd.com/read/28434743/the-effect-of-emulsifying-salts-on-the-turbidity-of-a-diluted-milk-system-with-varying-ph-and-protein-concentration
#3
M D Culler, Y Saricay, F M Harte
Solutions of 10 commonly used emulsifying salts (ES) listed in the Code of Federal Regulations (21CFR133.179) for pasteurized process cheese were tested for their effect on the turbidity of a diluted milk system at different pH and protein concentrations to characterize the conditions that affect micellar structure. Emulsifying salt solutions were made by mixing the ES in a 1-in-20 dilution of water in skim milk ultrafiltrate (3 kDa molecular weight cut-off) to obtain ES concentrations from 0 to 248 mM. Skim milk was added to solutions containing nanopure water, skim milk ultrafiltrate, and a specific ES ranging in concentration from 0 to 248 mM and pH 5, 5...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434735/effects-of-graded-removal-of-lysine-from-an-intravenously-infused-amino-acid-mixture-on-lactation-performance-and-mammary-amino-acid-metabolism-in-lactating-goats
#4
C L Guo, Y T Li, X Y Lin, M D Hanigan, Z G Yan, Z Y Hu, Q L Hou, F G Jiang, Z H Wang
To investigate responses of milk protein synthesis and mammary AA metabolism to a graded decrease of postruminal Lys supply, 4 lactating goats fitted with jugular vein, mammary vein, and carotid artery catheters and transonic blood flow detectors on the external pudic artery were used in a 4 × 4 Latin square experiment. Goats were fasted for 24 h and then received a 9-h intravenous infusion of an AA mixture plus glucose. Milk yield was recorded and samples were taken in h 2 to 8 of the infusion period; a mammary biopsy was performed in the last hour...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28434263/plant-protein-based-hydrophobic-fine-and-ultrafine-carrier-particles-in-drug-delivery-systems
#5
Hedieh Malekzad, Hamed Mirshekari, Parham Sahandi Zangabad, S M Moosavi Basri, Fazel Baniasadi, Maryam Sharifi Aghdam, Mahdi Karimi, Michael R Hamblin
For thousands of years, plants and their products have been used as the mainstay of medicinal therapy. In recent years, besides attempts to isolate the active ingredients of medicinal plants, other new applications of plant products, such as their use to prepare drug delivery vehicles, have been discovered. Nanobiotechnology is a branch of pharmacology that can provide new approaches for drug delivery by the preparation of biocompatible carrier nanoparticles (NPs). In this article, we review recent studies with four important plant proteins that have been used as carriers for targeted delivery of drugs and genes...
April 24, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28433470/daily-supplementation-of-dietary-protein-improves-the-metabolic-effects-of-glp-1-based-pharmacotherapy-in-lean-and-obese-rats
#6
Elizabeth G Mietlicki-Baase, Kieran Koch-Laskowski, Lauren E McGrath, Joanna Krawczyk, Tram Pham, Rinzin Lhamo, David J Reiner, Matthew R Hayes
Glucagon-like peptide-1 (GLP-1) is an incretin hormone released from intestinal L-cells in response to food entering into the gastrointestinal tract. GLP-1-based pharmaceuticals improve blood glucose regulation and reduce feeding. Specific macronutrients, when ingested, may trigger GLP-1 secretion and enhance the effects of systemic sitagliptin, a pharmacological inhibitor of DPP-IV (an enzyme that rapidly degrades GLP-1). In particular, macronutrient constituents found in dairy foods may act as potent secretagogues for GLP-1, and acute preclinical trials show that ingestion of dairy protein may represent a promising adjunct behavioral therapy in combination with sitagliptin...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28432788/structure-of-fam20a-reveals-a-pseudokinase-featuring-unique-disulfide-pattern-and-inverted-atp-binding
#7
Jixin Cui, Qinyu Zhu, Hui Zhang, Michael A Cianfrocco, Andres E Leschziner, Jack E Dixon, Junyu Xiao
Mutations in FAM20A cause tooth enamel defects known as Amelogenesis Imperfecta (AI) and renal calcification. We previously showed that Fam20A is a secretory pathway pseudokinase and allosterically activates the physiological casein kinase Fam20C to phosphorylate secreted proteins important for biomineralization (Cui et al., 2015). Here we report the nucleotide-free and ATP-bound structures of Fam20A. Fam20A exhibits a distinct disulfide bond pattern mediated by a unique insertion region. Loss of this insertion due to abnormal mRNA splicing interferes with the structure and function of Fam20A, resulting in AI...
April 22, 2017: ELife
https://www.readbyqxmd.com/read/28432100/casein-kinase-i-isoform-hrr25-is-a-negative-regulator-of-haa1-in-the-weak-acid-stress-response-pathway-in-saccharomyces-cerevisiae
#8
Morgan E Collins, Joshua J Black, Zhengchang Liu
Haa1 is a transcription factor that adapts Saccharomyces cerevisiae cells to weak organic acid stresses by activating the expression of various genes. Many of these genes encode membrane proteins such as TPO2 and YRO2 How Haa1 is activated by weak acids is not clear. Here, we show that casein kinase I isoform Hrr25 is an important negative regulator of Haa1. Haa1 is known to be multiply phosphorylated. We found that mutations in HRR25 lead to reduced Haa1 phosphorylation and increased expression of Haa1-target genes, and that Hrr25 interacts with Haa1...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28429994/ileal-endogenous-losses-in-pigs-feeding-a-protein-free-diet-or-diets-with-different-contents-of-casein-or-crystalline-amino-acids
#9
Matej Brestenský, Soňa Nitrayová, Peter Patráš
The common usage of protein-free diets to estimate unspecific AA losses has been criticised as unphysiological and incorrect. Therefore, in this study different diets were tested for the determination of endogenous losses (EL) of amino acids (AA) and nitrogen (N) assuming a complete absorption in the small intestine. Seven cannulated gilts received a protein-free diet (Diet PF) or diets with 3%, 6% or 10% crude protein (CP) from crystalline AA (Diets CA) or casein (Diets CAS) according to a 7 × 7 Latin square design...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28429993/interactive-effects-of-protein-and-carbohydrates-on-production-of-microbial-metabolites-in-the-large-intestine-of-growing-pigs
#10
Marcin Taciak, Marcin Barszcz, Ewa Święch, Anna Tuśnio, Ilona Bachanek
The study aimed at determining the effect of protein type and indigestible carbohydrates on the concentration of microbial metabolites in the large intestine of pigs. The experiment involved 36 pigs (15 kg initial body weight) divided into six groups, fed cereal-based diets with highly digestible casein (CAS) or potato protein concentrate (PPC) of lower ileal digestibility. Each diet was supplemented with cellulose, raw potato starch or pectin. After 2 weeks of feeding, pigs were sacrificed and samples of caecal and ascending, transverse and descending colon digesta were collected for analyses of microbial metabolites...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28427058/dietary-selenium-or-zinc-supplementation-restores-brain-lipid-composition-and-membrane-fluidity-in-protein-undernourished-rats
#11
Olusegun L Adebayo, Bamidele A Salau, Rajat Sandhir, Gbenga A Adenuga
Studies have shown that protein undernutrition (PU) modifies the membrane lipid composition in the intestine and liver, as well as in plasma and other areas. However, there is limited information on the effect of PU on synaptosomal membrane lipid composition and fluidity and the protective role of selenium (Se) and zinc (Zn), which is a major focus of the present study. For 10 weeks, rats were fed diets containing 16% casein, which constituted the adequate protein diet, or 5% casein, representing the PU diet...
April 21, 2017: Developmental Neuroscience
https://www.readbyqxmd.com/read/28422532/effects-of-post-exercise-protein-intake-on-muscle-mass-and-strength-during-resistance-training-is-there-an-optimal-ratio-between-fast-and-slow-proteins
#12
Marina Fabre, Christophe Hausswirth, Eve Tiollier, Odeline Molle, Julien Louis, Alexandre Durguerian, Nathalie Neuveux, Xavier Bigard
While effects of the two classes of proteins found in milk (i.e. soluble proteins, including whey, and casein) on muscle protein synthesis have been well investigated after a single bout of resistance exercise (RE), the combined effects of these two proteins on the muscle responses to resistance training (RT) have not yet been investigated. Therefore, the aim of this study was to examine the effects of protein supplementation varying by the ratio between milk soluble proteins (fast-digested protein) and casein (slow-digested protein) on the muscle to a 9-week RT program...
April 19, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28422289/dietary-tuna-dark-muscle-protein-attenuates-hepatic-steatosis-and-increases-serum-high-density-lipoprotein-cholesterol-in-obese-type-2-diabetic-obese-kk-a-y-mice
#13
Hayato Maeda, Ryota Hosomi, Mari Fukuda, Yuki Ikeda, Munehiro Yoshida, Kenji Fukunaga
Tuna muscle consists of light and dark muscle in approximately equal proportions. However, besides for the light muscle of tuna, cod, sardine, and salmon, few researches have assessed the health-promoting functions of fish protein. Therefore, we evaluated the mechanisms underlying the alteration of lipid storage and cholesterol metabolism following the intake of tuna dark muscle protein (TDMP) by obese type-2 diabetic/obese mice. Four-week-old male KK-A(y) mice were separated into 2 dietary groups, with one group receiving a casein-based diet and the other receiving a diet with the substitution of part of the protein (50%, w/w) by TDMP (TDMP diet) for 4 wk...
April 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28417422/selection-of-an-artificial-diet-for-laboratory-rearing-of-opogona-sacchari-lepidoptera-tineidae-bojer-1856
#14
A Coelho, J M Milanez, R de Andrade Moral, C G B Demétrio, J R P Parra
The banana moth Opogona sacchari (Bojer) (Lepidoptera: Tineidae) is a polyphagous pest that can cause serious damage, in particular to banana crops in southern Brazil. The insect is a quarantine pest in several countries, including Argentina, the main consumer market for bananas from southern Brazil. Little information is available about the biology and ecology of this moth, such as a suitable diet for laboratory rearing. In order to provide support for integrated pest management of the pest, this study furnished data for selecting two diets suitable for continuous laboratory rearing of O...
April 17, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28412994/effects-of-high-fat-diet-on-somatic-growth-metabolic-parameters-and-function-of-peritoneal-macrophages-of-young-rats-submitted-to-a-maternal-low-protein-diet
#15
Maria Cláudia Alheiros-Lira, Gabriela Carvalho Jurema-Santos, Helyson Tomaz da-Silva, Amanda Cabral da-Silva, Sueli Moreno Senna, Wylla Tatiana Ferreira E Silva, José Candido Ferraz, Carol Góis Leandro
This study evaluated the effects of a post-weaning high-fat (HF) diet on somatic growth, food consumption, metabolic parameters, phagocytic rate and nitric oxide (NO) production of peritoneal macrophages in young rats submitted to a maternal low-protein (LP) diet. Male Wistar rats (aged 60 d) were divided in two groups (n 22/each) according to their maternal diet during gestation and lactation: control (C, dams fed 17 % casein) and LP (dams fed 8 % casein). At weaning, half of the groups were fed HF diet and two more groups were formed (HF and low protein-high fat (LP-HF))...
April 17, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28411435/the-effect-of-surfactant-crystallization-on-partial-coalescence-in-o-w-emulsions
#16
Lucie Goibier, Sophie Lecomte, Fernando Leal-Calderon, Chrystel Faure
Partial coalescence is a ubiquitous instability in emulsions whose dispersed phase is partially crystallized. When emulsions are stabilized with proteins, interfacial stiffness and long-range repulsive surface forces hinder this type of instability. The addition of low molecular weight surfactants modifies the interfacial properties and surface forces, generally promoting partial coalescence. In the present work, various surfactants (Tween® 80, palmitic acid and monoglycerides) differing in their crystallization temperature were probed for their ability to induce partial coalescence in model O/W emulsions stabilized by sodium caseinate...
April 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28404913/a-novel-role-of-ckip-1-in-promoting-megakaryocytic-differentiation
#17
Jiao Fan, Yiwu Wang, Yuan Shen, Qingyan Liu, Rong Gao, Ya Qiu, Chanjuan Wang, Lingqiang Zhang
Casein kinase 2-interacting protein-1 (CKIP-1) is a known regulator of cardiomyocytes and macrophage proliferation. In this study, we showed that CKIP-1 was involved in the process of megakaryocytic differentiation. During megakaryocytic differentiation of K562 cells, CKIP-1 was dramatically upregulated and this upregulation induced by PMA was mediated through downregulation of transcription factor GATA-1. By transient transfection, oligonucleotide-directed mutagenesis and chromatin immunoprecipitation assays, we identified the transcriptional regulation of CKIP-1 by GATA-1...
February 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28402261/association-of-ckip-1-p21a-polymorphism-with-risk-of-chronic-heart-failure-in-a-chinese-population
#18
Mu-Peng Li, Yan-Jiao Zhang, Xiao-Lei Hu, Ji-Peng Zhou, Yong-Long Yang, Li-Ming Peng, Hong Qi, Tian-Lun Yang, Xiao-Ping Chen
Pathological cardiac hypertrophy is an independent risk factor for chronic heart failure. Casein kinase-2 interacting protein-1 (CKIP-1) can inhibit pathological cardiac hypertrophy. Therefore, we investigated whether CKIP-1 nonsynonymous polymorphism rs2306235 (Pro21Ala) contributes to risk and prognosis of chronic heart failure in a Chinese population. A total of 923 adult patients with chronic heart failure and 1020 age- and gender-matched healthy controls were recruited. CKIP-1 rs2306235 polymorphism was genotyped using PCR-restriction fragment length polymorphism...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28398512/mutant-spastin-proteins-promote-deficits-in-axonal-transport-through-an-isoform-specific-mechanism-involving-casein-kinase-2-activation
#19
Lanfranco Leo, Carina Weissmann, Matthew Burns, Minsu Kang, Yuyu Song, Liang Qiang, Scott T Brady, Peter W Baas, Gerardo Morfini
Mutations of various genes cause hereditary spastic paraplegia (HSP), a neurological disease involving dying-back degeneration of upper motor neurons. From these, mutations in the SPAST gene encoding the microtubule-severing protein spastin account for most HSP cases. Cumulative genetic and experimental evidence suggests that alterations in various intracellular trafficking events, including fast axonal transport (FAT), may contribute to HSP pathogenesis. However, the mechanisms linking SPAST mutations to such deficits remain largely unknown...
April 7, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28396155/partial-purification-and-identification-of-a-metalloproteinase-with-anticoagulant-activity-from-rhizostoma-pulmo-barrel-jellyfish
#20
Akriti Rastogi, Angshuman Sarkar, Dibakar Chakrabarty
Rhizostoma pulmo (Barrel Jellyfish) is one of the commonly found jellyfishes on the South-Goan coast of India. Here we present characterization of R. pulmo tentacle extract. The tentacle extracts were found to be capable of affecting the hemostatic system at three different levels, as it exhibited fibrinogenolysis, fibrinolysis and inhibition of ADP induced platelet aggregation. It preferentially cleaved the Aα chain of fibrinogen, followed by the Bβ chain and the γ chain. The tentacle extract also showed significant hemolytic activity against human RBCs and strong proteolytic activity for substrates like (azo) casein and gelatin...
June 15, 2017: Toxicon: Official Journal of the International Society on Toxinology
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