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Casein protein

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https://www.readbyqxmd.com/read/29149221/dietary-protein-sources-differentially-affect-microbiota-mtor-activity-and-transcription-of-mtor-signaling-pathways-in-the-small-intestine
#1
Soumya K Kar, Alfons J M Jansman, Nirupama Benis, Javier Ramiro-Garcia, Dirkjan Schokker, Leo Kruijt, Ellen H Stolte, Johanna J Taverne-Thiele, Mari A Smits, Jerry M Wells
Dietary protein sources can have profound effects on host-microbe interactions in the gut that are critically important for immune resilience. However more knowledge is needed to assess the impact of different protein sources on gut and animal health. Thirty-six wildtype male C57BL/6J mice of 35 d age (n = 6/group; mean ± SEM body weight 21.9 ± 0.25 g) were randomly assigned to groups fed for four weeks with semi synthetic diets prepared with one of the following protein sources containing (300 g/kg as fed basis): soybean meal (SBM), casein, partially delactosed whey powder, spray dried plasma protein, wheat gluten meal and yellow meal worm...
2017: PloS One
https://www.readbyqxmd.com/read/29144393/growth-gastrointestinal-tolerance-and-stool-characteristics-of-healthy-term-infants-fed-an-infant-formula-containing-hydrolyzed-whey-protein-63-and-intact-casein-37-a-randomized-clinical-trial
#2
Shang-Ling Wu, Ding Ding, Ai-Ping Fang, Pei-Yan Chen, Si Chen, Li-Peng Jing, Yu-Ming Chen, Hui-Lian Zhu
To investigate whether healthy term infants, fed an infant formula containing hydrolyzed whey protein (HWP-F, hydrolyzed whey/intact casein =63/37), differ in growth, gastrointestinal tolerance and stool characteristics from those fed an infant formula containing intact whey protein (IWP-F, intact whey/intact casein =61/39) or breast milk. Healthy term infants, born within 14 days of the study's commencement, were randomly assigned to be fed IWP-F or HWP-F until 13 weeks of age, and breast-fed (BF) infants were enrolled as a reference group...
November 16, 2017: Nutrients
https://www.readbyqxmd.com/read/29141220/phosphorylation-and-ubiquitination-regulate-protein-phosphatase-5-activity-and-its-prosurvival-role-in-kidney-cancer
#3
Natela Dushukyan, Diana M Dunn, Rebecca A Sager, Mark R Woodford, David R Loiselle, Michael Daneshvar, Alexander J Baker-Williams, John D Chisholm, Andrew W Truman, Cara K Vaughan, Timothy A Haystead, Gennady Bratslavsky, Dimitra Bourboulia, Mehdi Mollapour
The serine/threonine protein phosphatase 5 (PP5) regulates multiple cellular signaling networks. A number of cellular factors, including heat shock protein 90 (Hsp90), promote the activation of PP5. However, it is unclear whether post-translational modifications also influence PP5 phosphatase activity. Here, we show an "on/off switch" mechanism for PP5 regulation. The casein kinase 1δ (CK1δ) phosphorylates T362 in the catalytic domain of PP5, which activates and enhances phosphatase activity independent of Hsp90...
November 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/29138228/low-protein-diet-induced-hyperphagia-and-adiposity-are-modulated-through-interactions-involving-thermoregulation-motor-activity-and-protein-quality-in-mice
#4
Anne Blais, Catherine Chaumontet, Dalila Azzout-Marniche, Julien Piedcoq, Gilles Fromentin, Claire Gaudichon, Daniel Tomé, Patrick C Even
Low-protein (LP) containing diets can induce overeating in rodents and possibly in humans in an effort to meet protein requirement but the consequences on energy expenditure (EE) are unclear. The present study evaluated the changes induced by reducing dietary protein from 20% to 6%, using either soy protein or casein, on energy intake, body composition and EE in mice housed at 22°C or at 30°C (thermal-neutrality). LP feeding increased energy intake and adiposity, more in soy fed than in casein fed mice, but also increased EE thus limiting fat accumulation...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29136822/new-ti-imac-magnetic-polymeric-nanoparticles-for-phosphopeptide-enrichment-from-complex-real-samples
#5
Anna Laura Capriotti, Chiara Cavaliere, Francesca Ferraris, Valentina Gianotti, Michele Laus, Susy Piovesana, Katia Sparnacci, Riccardo Zenezini Chiozzi, Aldo Laganà
The work describes the preparation of a new magnetic phase for batch enrichment of phosphopeptides. The material exploits the advantages of magnetic solid phase extraction and couples them with the most employed approach for phosphopeptide enrichment, i.e. Ti(4+)-IMAC. In order to immobilize Ti(4+) ions on the surface of the magnetite nanoparticles, they were first covered by a silica shell and then modified to expose at the surface bromine containing groups. Glycidyl methacrylate was subsequently polymerized from these groups using the "grafting from" approach by the activator regenerated by electron transfer-atom transfer radical polymerization (ARGET-ATRP) technique...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29127314/modulation-of-transcriptional-mineralocorticoid-receptor-activity-by-casein-kinase-2
#6
Stefanie Ruhs, Nicole Strätz, Katja Quarch, Antonia Masch, Mike Schutkowski, Michael Gekle, Claudia Grossmann
The pathogenesis of cardiovascular diseases is a multifunctional process in which the mineralocorticoid receptor (MR), a ligand-dependent transcription factor, is involved as proven by numerous clinical studies. The development of pathophysiological MR actions depends on the existence of additional factors e.g. inflammatory cytokines and seems to involve posttranslational MR modifications e.g. phosphorylation. Casein kinase 2 (CK2) is a ubiquitously expressed multifunctional serine/threonine kinase that can be activated under inflammatory conditions as the MR...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29125639/chemical-physiochemical-and-microstructural-properties-and-probiotic-survivability-of-fermented-goat-milk-using-polymerized-whey-protein-and-starter-culture-kefir-mild-01
#7
Hao Wang, Cuina Wang, Mu Wang, Mingruo Guo
A set-type fermented goat milk (FGM) using polymerized whey protein (PWP) as main thickening agent and Kefir Mild 01 as starter culture was developed. The FGM with PWP (0.3%, w/v) and pectin (0.2%, w/v) had low syneresis (5.44 ± 0.92%), desirable viscosity (952.86 ± 61.52 mPa⋅s), and hardness (112.57 ± 3.23 g), which were comparable to a fermented cow milk. Sensory evaluation data showed that the FGM with PWP and pectin had higher scores of both flavor (4.41 ± 0.39) and taste (3.72 ± 0.34) than the sample without PWP...
November 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29125094/inferring-individual-cow-effects-dairy-system-effects-and-feeding-effects-on-latent-variables-underlying-milk-protein-composition-and-cheese-making-traits-in-dairy-cattle
#8
Christos Dadousis, Claudio Cipolat-Gotet, Stefano Schiavon, Giovanni Bittante, Alessio Cecchinato
We examined the latent structure of 26 cheese related phenotypes in dairy cattle. Traits related to milk yield and quality (8 traits), milk protein fractions (8 traits), coagulation and curd firmness indicators (CF, 5 traits) and cheese-making phenotypes (cheese yields (%CY) and nutrient recoveries in the curd (REC), 5 traits) were analysed through multivariate factor analysis (MFA) using a varimax rotation. All phenotypes were measured in 1264 Brown Swiss cows. Ten mutual orthogonal, latent variables (factors; Fs) were obtained explaining 74% of the original variability...
November 10, 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/29121973/in-vitro-investigations-on-extracellular-proteins-secreted-by-aphanomyces-invadans-the-causative-agent-of-epizootic-ulcerative-syndrome
#9
Muhammad Majeed, Gokhlesh Kumar, Sarah Schlosser, Mansour El-Matbouli, Mona Saleh
BACKGROUND: Proteases produced by many microorganisms, including oomycetes, are crucial for their growth and development. They may also play a critical role in disease manifestation. Epizootic ulcerative syndrome is one of the most destructive fish diseases known. It is caused by the oomycete Aphanomyces invadans and leads to mass mortalities of cultured and wild fish in many countries. The areas of concern are Australia, China, Japan, South and Southeast Asian countries and the USA. Extracellular proteases produced by this oomycete are believed to trigger EUS pathogenesis in fish...
November 9, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29121771/switching-peroxidase-mimic-activity-of-protein-stabilized-pt-nanozymes-by-sulfide-ions-substrate-dependence-mechanism-and-detection
#10
Yan Liu, Yuanlin Zheng, Ding Ding, Rong Guo
In the present work, we use β-casein as a model protein to prepare a smart β-casein stabilized Pt nanoparticle (CM/PtNP) with peroxidase mimicking activity, and systematically investigate sulfide-mediated switching effect and mechanism of CM/PtNP nanozyme's activity. Sulfide-mediated activity switching effect depends heavily on the physicochemical properties of nanozymes and the identity of substrate. On one hand, the binding of sulfide to Pt nanozyme surface leads to the transform from Pt2+ to Pt0, resulting in more active sites and the activity "switching on"; on the other hand, the binding of sulfide ions via Pt-S interaction blocks the active sites, resulting in the activity "switching off"...
November 9, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29120794/the-inhibitory-roles-of-native-whey-protein-on-the-rennet-gelation-of-bovine-milk
#11
Charitha J Gamlath, Thomas S H Leong, Muthupandian Ashokkumar, Gregory J O Martin
Rennet gelation is used to produce many types of cheese. The effect of native whey protein on rennet gelation kinetics was investigated. Milks with a wide range of whey protein:casein (WP:CN) ratios (with standardised casein concentrations) were made from powders produced by microfiltration. Measurements of casein macro peptide release showed that native whey protein inhibited the enzymatic action of chymosin, which delayed the onset and reduced the subsequent rate of gelation. Experiments in which increased chymosin concentrations compensated for the inhibition, demonstrated that other factors also contributed to the reduced gelation rate...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29120788/milk-authenticity-by-ion-trap-proteomics-following-multi-enzyme-digestion
#12
Donatella Nardiello, Anna Natale, Carmen Palermo, Maurizio Quinto, Diego Centonze
The practice of adding adulterating substances in milk in order to raise profits is unfortunately worldwide. In addition, higher priced milk, coming from minor dairy species, is often illegally integrated with the lower priced cow milk. The presence of species-specific proteins, different from those declared in label, may be a serious problem for people with allergies. The development of proper analytical methods is therefore essential to protect consumer benefits and product authenticity. In this study, a proteomic approach for the detection of adulteration processes of specific milks in mixtures is proposed...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29120777/synthesis-and-characterization-of-alkylated-caseinate-and-its-structure-curcumin-loading-property-relationship-in-water
#13
Yaqiong Zhang, Fangyi Yao, Jie Liu, Wen Zhou, Liangli Lucy Yu
Alkylated caseinates (Cn-caseinates) containing selected C8-C16 alkyl groups were successfully synthesized through a two-step reaction between the protein and fatty acids. The substitution degree (SD) of the alkyl groups was 5.2-72.9%, which depended on the feed molar ratio of reagents and fatty acid chain length. The SD value was positively associated with the surface hydrophobicity index (S0) of the Cn-caseinate. Among the tested Cn-caseinates (n = 0, 8, 12, 14 and 16), C16-caseinate showed the best self-assembly and curcumin-loading properties in water...
April 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29118923/ddx3-binding-with-ck1%C3%AE%C2%B5-was-closely-related-to-motor-neuron-degeneration-of-als-by-affecting-neurite-outgrowth
#14
Yanchun Chen, Qing Wang, Qiaozhen Wang, Huancai Liu, Fenghua Zhou, Yawen Zhang, Meng Yuan, Chunyan Zhao, Yingjun Guan, Xin Wang
Amyotrophic lateral sclerosis (ALS) is a chronic neurodegenerative disease characterized by progressive degeneration of motor neurons. The pathogenesis of ALS remains largely unknown. RNA helicase DDX3 is a multifunctional protein involved in several steps of gene expression. Casein kinase 1ε (CK1ε) is an important signal molecule of Wnt signaling pathway and is closely related to neurite growth. However, the roles of DDX3 and CK1ε in the pathogenesis of ALS remain unclear. In this study, we first investigated the expression of DDX3 and CK1ε in the spinal cord of SOD1-G93A ALS transgenic mice using RT-PCR, Western blot and immunohistochemical technique...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29113166/expression-of-circadian-clock-genes-in-human-colorectal-adenoma-and-carcinoma
#15
Tomoyuki Momma, Hirokazu Okayama, Masaru Saitou, Hidekazu Sugeno, Nobuhiro Yoshimoto, Yuji Takebayashi, Shinji Ohki, Seiichi Takenoshita
Circadian rhythms are fundamental biological systems in most organisms. Epidemiological and animal studies have demonstrated that disruption of circadian rhythms is linked to tumor progression and mammalian tumorigenesis. However, the clinical significance of in situ clock gene expression in precancerous and cancerous colorectal lesions remains unknown. The present study aimed to investigate mRNA transcript levels of circadian clock genes within human colorectal cancer and adenoma tissue sections. Using in situ hybridization, the expression of key clock genes, including period circadian protein homolog (Per) 1 and 2, cryptochrome 1 (Cry1), circadian locomoter output cycles protein kaput (Clock), brain and muscle ARNT-like protein 1 (Bmal1) and casein kinase 1ε (CK1ε) were retrospectively examined in 51 cases of colorectal carcinoma and 10 cases of adenoma...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29109149/chronic-oxidative-stress-promotes-gadd34-mediated-phosphorylation-of-the-tar-dna-binding-protein-tdp-43-a-modification-linked-to-neurodegeneration
#16
Catherine Wenhui Goh, Irene Chengjie Lee, Jeyapriya Rajameenakshi Sundaram, Simi Elizabeth George, Permeen Yusoff, Matthew Hayden Brush, Newman Siu Kwan Sze, Shirish Shenolikar
Oxidative and endoplasmic reticulum (ER) stresses are hallmarks of the pathophysiology of amyotrophic lateral sclerosis (ALS) and other neurodegenerative diseases. In these stresses, different kinases phosphorylate eukaryotic initiation factor eIF2α enabling the translation of stress response genes, among these is GADD34, the protein product of which recruits the α-isoform of protein phosphatase 1 catalytic subunit (PP1α) and eIF2α to assemble a phosphatase complex catalyzing eIF2α dephosphorylation and resumption of protein synthesis...
November 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29108063/rapid-communication-period2-gene-silencing-increases-the-synthesis-of-%C3%AE-s-casein-protein-in-bovine-mammary-epithelial-cells
#17
L Y Hu, M Z Wang, J L Ouyang, P F Li, J J Loor
(), a core clock gene, encodes a circadian rhythm protein which has been shown to control mammary metabolism in rodents. Whether regulates milk component synthesis such as α-casein protein in bovine mammary cells is unknown. Thus, we used gene silencing technology to determine if silencing could affect α-casein synthesis and cell growth in cultured primary bovine mammary epithelial cells (BMEC). The BMEC were established by enzymatic digestion of mammary tissue from mid-lactation cows. A transient-transfection technique was used to insert a small interfering RNA (siRNA) oligonucleotide specific for to inhibit transcription...
October 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/29107946/yeast-casein-kinase-2-governs-morphology-biofilm-formation-cell-wall-integrity-and-host-cell-damage-of-candida-albicans
#18
Sook-In Jung, Natalie Rodriguez, Jihyun Irrizary, Karl Liboro, Thania Bogarin, Marlene Macias, Edward Eivers, Edith Porter, Scott G Filler, Hyunsook Park
The regulatory networks governing morphogenesis of a pleomorphic fungus, Candida albicans are extremely complex and remain to be completely elucidated. This study investigated the function of C. albicans yeast casein kinase 2 (CaYck2p). The yck2Δ/yck2Δ strain displayed constitutive pseudohyphae in both yeast and hyphal growth conditions, and formed enhanced biofilm under non-biofilm inducing condition. This finding was further supported by gene expression analysis of the yck2Δ/yck2Δ strain which showed significant upregulation of UME6, a key transcriptional regulator of hyphal transition and biofilm formation, and cell wall protein genes ALS3, HWP1, and SUN41, all of which are associated with morphogenesis and biofilm architecture...
2017: PloS One
https://www.readbyqxmd.com/read/29104459/effects-of-oral-glutamine-on-inflammatory-and-autophagy-responses-in-cancer-patients-treated-with-abdominal-radiotherapy-a-pilot-randomized-trial
#19
Juan J Ortiz de Urbina, Beatriz San-Miguel, Alfonso Vidal-Casariego, Irene Crespo, Diana I Sánchez, José L Mauriz, Jesús M Culebras, Javier González-Gallego, María J Tuñón
Background and Aims: Abdominal radiotherapy (RT) causes harm to the mid gastrointestinal mucosa by release of pro-inflammatory cytokines and promotes autophagic changes in tumor cells. This study was aimed to measure the effect of glutamine administration on markers of inflammation and autophagy in cancer patients treated with RT. Methods: In this double-blind, randomized, controlled pilot trial 43 patients under abdominal RT diagnosed of pelvic or abdominal malignancies receiving glutamine (30 g/d) or placebo (casein, 30 g/d)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29104365/validation-of-a-paper-disk-approach-to-facilitate-the-sensory-evaluation-of-bitterness-in-dairy-protein-hydrolysates-from-a-newly-developed-food-grade-fractionation-system
#20
Niamh M Murray, Dolores O'Riordan, Jean-Christophe Jacquier, Michael O'Sullivan, Joshua L Cohen, Hildegarde Heymann, Daniela Barile, David C Dallas
Casein-hydrolysates (NaCaH) are desirable functional ingredients, but their bitterness impedes usage in foods. This study sought to validate a paper-disk approach to help evaluate bitterness in NaCaHs and to develop a food-grade approach to separate a NaCaH into distinct fractions, which could be evaluated by a sensory panel. Membrane filtration generated <0.2-μm and <3-kDa permeates. Further fractionation of the <3-kDa permeate by flash-chromatography generated four fractions using ethanol (EtOH) concentrations of 5, 10, 30 and 50%...
June 2017: Journal of Sensory Studies
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