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Casein protein

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https://www.readbyqxmd.com/read/28545154/site-specific-phosphorylation-of-casein-kinase-1-%C3%AE-ck1%C3%AE-regulates-its-activity-towards-the-circadian-regulator-per2
#1
Gracie Wee Ling Eng, Edison, David M Virshup
Circadian rhythms are intrinsic ~24 hour cycles that regulate diverse aspects of physiology, and in turn are regulated by interactions with the external environment. Casein kinase 1 delta (CK1δ, CSNK1D) is a key regulator of the clock, phosphorylating both stabilizing and destabilizing sites on the PER2 protein, in a mechanism known as the phosphoswitch. CK1δ can itself be regulated by phosphorylation on its regulatory domain, but the specific sites involved, and the role this plays in control of circadian rhythms as well as other CK1-dependent processes is not well understood...
2017: PloS One
https://www.readbyqxmd.com/read/28542923/the-polysialic-acid-mimetics-idarubicin-and-irinotecan-stimulate-neuronal-survival-and-neurite-outgrowth-and-signal-via-protein-kinase-c
#2
Gabriele Loers, Steven Astafiev, Yuliya Hapiak, Vedangana Saini, Bibhudatta Mishra, Sheraz Gul, Gurcharan Kaur, Melitta Schachner, Thomas Theis
Polysialic acid (PSA) is a large, negatively charged, linear homopolymer of alpha2-8-linked sialic acid residues. It is generated by two polysialyltransferases and attached to N- and/or O-linked glycans, and its main carrier is the neural cell adhesion molecule NCAM. PSA controls the development and regeneration of the nervous system by enhancing cell migration, axon pathfinding, synaptic targeting, synaptic plasticity, by regulating the differentiation of progenitor cells and by modulating cell-cell and cell-matrix adhesions...
May 24, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28542880/suicidal-death-of-erythrocytes-in-cancer-and-its-chemotherapy-a-potential-target-in-the-treatment-of-tumor-associated-anemia
#3
REVIEW
Elisabeth Lang, Rosi Bissinger, Syed M Qadri, Florian Lang
In analogy to apoptosis of nucleated cells, erythrocytes may enter eryptosis characterized by cell shrinkage and cell membrane scrambling. Eryptotic erythrocytes are rapidly cleared from circulating blood and may adhere to the vascular wall. Stimulation of eryptosis thus impairs microcirculation and leads to anemia as soon as the loss of erythrocytes cannot be fully compensated by enhanced erythropoiesis. Signaling stimulating eryptosis includes increase of cytosolic Ca(2+) -activity, ceramide, caspases, calpain, p38-kinase, protein-kinase C, Janus-activated kinase 3, casein-kinase 1α, and cyclin-dependent kinase 4...
May 23, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28536184/pre-sleep-dietary-protein-derived-amino-acids-are-incorporated-in-myofibrillar-protein-during-post-exercise-overnight-recovery
#4
Jorn Trommelen, Imre W K Kouw, Andrew M Holwerda, Tim Snijders, Shona L Halson, Ian Rollo, Lex B Verdijk, Luc J C van Loon
The purpose of this study was to determine the impact of ingesting 30 g casein protein with and without 2 g free leucine prior to sleep on myofibrillar protein synthesis rates during post-exercise overnight recovery. 36 healthy young males performed a single bout of resistance-type exercise in the evening (19:45 h) after a full day of dietary standardization. Thirty min prior to sleep (23:30 h), subjects ingested 30 g intrinsically L-[1-(13)C]-phenylalanine-labeled protein with (PRO+leu, n=12) or without (PRO, n=12) 2 g free leucine, or a noncaloric placebo (PLA, n=12)...
May 23, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28533032/design-and-synthesis-of-an-immobilized-metal-affinity-chromatography-and-metal-oxide-affinity-chromatography-hybrid-material-for-improved-phosphopeptide-enrichment
#5
Da-Song Yang, Xi-Ying Ding, Hong-Ping Min, Bo Li, Meng-Xiang Su, Miao-Miao Niu, Bin Di, Fang Yan
Reversible phosphorylation of proteins is one of the most important post-translational modifications, while the detection of phosphopeptides is difficult due to their low abundance and the signal suppression of nonphosphorylated peptides. Therefore, selective enrichment of phosphopeptides from highly complicated mixtures is vital for MS-based phosphoproteome analysis. Despite various strategies have been developed, there is no single method that is capable of providing full coverage of the whole phosphoproteome...
May 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28529330/dietary-medium-chain-saturated-fatty-acids-induce-gene-expression-of-energy-metabolism-related-pathways-in-adipose-tissue-of-abdominally-obese-subjects
#6
J C Matualatupauw, M Bohl, S Gregersen, K Hermansen, L A Afman
BACKGROUND: Dietary medium-chain saturated fatty acids (MC-SFAs) have been shown to reduce total body fat. Previously, we showed that MC-SFAs prevent body fat accumulation, despite weight gain. Here, we aim to explore potential molecular mechanisms underlying the protective effect of MC-SFAs on body fat gain. METHODS: The DairyHealth study examined the long-term effects of milk protein and milk fat with a low or high content of MC-SFA. In this 12 week, randomized, double-blind, diet intervention study, participants consumed 60 g milk protein (whey or casein) and 63 g milk fat (high MC-SFA or low MC-SFA) daily in a 2 by 2 factorial design...
May 22, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28527801/genetic-and-nongenetic-factors-contributing-to-differences-in-%C3%AE-s-casein-phosphorylation-isoforms-and-other-major-milk-proteins
#7
Z H Fang, H Bovenhuis, A Delacroix-Buchet, G Miranda, D Boichard, M H P W Visker, P Martin
Relative concentrations of αS-casein (αS-CN) phosphorylation isoforms vary considerably among milk of individual cows. We aimed to explore to what extent genetic and other factors contribute to the variation in relative concentrations of αS-CN phosphorylation isoforms and the phosphorylation degree of αS-CN defined as the proportion of isoforms with higher degrees of phosphorylation. We also investigated the associations of genetic variants of milk proteins and casein haplotypes with relative concentrations of αS-CN phosphorylation isoforms and with the phosphorylation degree of αS-CN in French Montbéliarde cattle from the cheese production area of Franche-Comté...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28526384/stereology-shows-that-damaged-liver-recovers-after-protein-refeeding
#8
Silvio Pires Gomes, Andréa Almeida Pinto da Silva, Amanda Rabello Crisma, Primavera Borelli, Francisco Javier Hernandez-Blazquez, Mariana P de Melo, Barbara Bacci, Andrzej Loesch, A Augusto Coppi
OBJECTIVE: The aim of the present study was to investigate the putative effects of a low-protein diet on the three-dimensional structure of hepatocytes and determine whether this scenario could be reversed by restoring the adequate levels of protein to the diet. METHODS: Using design-based stereology, the total number and volume of hepatocytes were estimated in the liver of mice in healthy and altered (by protein malnutrition) conditions and after protein renutrition...
June 2017: Nutrition
https://www.readbyqxmd.com/read/28524017/effect-of-homogenisation-in-formation-of-thermally-induced-aggregates-in-a-non-and-low-fat-milk-model-system-with-microparticulated-whey-proteins
#9
Isabel Celigueta Torres, Gema Nieto, Tommy Nylander, Adam Cohen Simonsen, Alexander Tolkach, Richard Ipsen
The objective of the research presented in this paper was to investigate how different characteristics of whey protein microparticles (MWP) added to milk as fat replacers influence intermolecular interactions occurring with other milk proteins during homogenisation and heating. These interactions are responsible for the formation of heat-induced aggregates that influence the texture and sensory characteristics of the final product. The formation of heat-induced complexes was studied in non- and low-fat milk model systems, where microparticulated whey protein (MWP) was used as fat replacer...
May 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28524014/composition-and-enzymatic-activity-in-bulk-milk-from-dairy-farms-with-conventional-or-robotic-milking-systems
#10
Monika Johansson, Åse Lundh, Ruben de Vries, Kerstin Svennersten Sjaunja
The objective of the studies reported in this research communication was to investigate differences in composition and enzymatic activities in bulk milk samples provided from Swedish dairy farms with different management systems, i.e. automated (AMS) and conventional milking systems (CMS). A bulk milk sample was collected from each of 104 dairy farms, 51 using AMS and 53 using CMS, located in the same geographical region. Sampling took place within two consecutive days during the indoor period (October). Milk samples were analysed for contents of total fat and protein, free fatty acids (FFA), caseins and whey proteins, somatic cell count (SCC), pH, plasmin and plasminogen derived activities, and total proteolysis...
May 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28522250/ppargamma-agonists-rescue-increased-phosphorylation-of-fgf14-at-s226-in-the-tg2576-mouse-model-of-alzheimer-s-disease
#11
Wei-Chun J Hsu, Norelle C Wildburger, Sigmund J Haidacher, Miroslav N Nenov, Oluwarotimi Folorunso, Aditya K Singh, Brent C Chesson, Whitney F Franklin, Ibdanelo Cortez, Rovshan G Sadygov, Kelly T Dineley, Jay S Rudra, Giulio Taglialatela, Cheryl F Lichti, Larry Denner, Fernanda Laezza
BACKGROUND: Cognitive impairment in humans with Alzheimer's disease (AD) and in animal models of Aβ-pathology can be ameliorated by treatments with the nuclear receptor peroxisome proliferator-activated receptor-gamma (PPARγ) agonists, such as rosiglitazone (RSG). Previously, we demonstrated that in the Tg2576 animal model of AD, RSG treatment rescued cognitive deficits and reduced aberrant activity of granule neurons in the dentate gyrus (DG), an area critical for memory formation...
May 15, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28521571/milk-caseins-as-useful-vehicle-for-delivery-of-dipyridamole-drug
#12
Hamid Dezhampanah, Masoomeh Esmaili, Leila Hasani
The interaction of bovine milk α- and β-caseins as an efficient drug carrier system with Dipyridamole (DIP) was investigated using spectroscopy and molecular docking studies at different temperatures (20-37(o)C). FTIR, CD and fluorescence spectroscopy methods demonstrated that α- and β-caseins interact with DIP molecule mainly via hydrophobic and hydrophilic interactions and change in secondary structure of α- and β-caseins. DIP showed a higher quenching efficiency and binding constant of α-casein than β-casein...
May 18, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28521324/the-role-of-hydrolyzed-formula-in-allergy-prevention
#13
Michael D Cabana
Asthma, eczema, food allergy, and allergic rhinitis are some of the most common pediatric, chronic conditions in the world. Breastfeeding is the optimal way to feed all infants. For those infants who are exposed to infant formula, some studies suggest that certain partially hydrolyzed or extensively hydrolyzed formulas may decrease the risk of allergic disease compared to nonhydrolyzed formulas for children with a family history of atopic disease. Overall, there is some evidence to suggest that partially hydrolyzed whey formulas and extensively hydrolyzed casein formulas may decrease the risk of developing eczema for infants at high risk of allergic disease...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28515842/casein-protein-supplementation-in-trained-men-and-women-morning-versus-evening
#14
Jose Antonio, Anya Ellerbroek, Corey Peacock, Tobin Silver
The purpose of this investigation was to determine the effects of casein supplementation (54 grams) in the morning (Casein-MOR) or evening (Casein-EVE) (90 minutes or less prior to sleep) on measures of body composition and exercise performance in trained men and women. Twenty-six healthy men and women who had been training regularly for greater than 12 months completed this 8-week study (mean±SD; Casein-MOR group [n=14, seven male, seven female]: 30.0±8.2 yr; 170.7±9.5 cm; 70.9±13.9 kg. Casein-EVE group [n=12, nine male, three female]: 28...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28510613/preliminary-report-on-%C3%AE-casein-gene-met183qval183-polymorphism-in-romanian-indigenous-zackel-sheep-breeds
#15
Szilvia Kusza, Daniela Elena Ilie, Maria Sauer, Ioan-Walter Sauer, Dinu Gavojdian
Genetic polymorphisms of the milk protein genes are important because of their effects on quantitative traits and technological properties of milk manufacturing. In the present study we identified the polymorphism of the beta-casein gene in two local sheep breeds (Racka n=98 and Turcana n=111) in Romania. The most studied variants at the ovine beta-casein (CSN2) locus are: A and G variants. Genomic DNA was extracted from hair follicles and beta-casein genotypes were determined by the rapid TaqMan (Applied Biosystems, USA) genotyping assay...
May 17, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28510450/enhancement-of-antioxidative-and-intestinal-anti-inflammatory-activities-of-glycated-milk-casein-after-fermentation-with-lactobacillus-casei-4b15
#16
Nam Su Oh, Jae Yeon Joung, Ji Young Lee, Younghoon Kim, Sae Hun Kim
In this study, we investigated the glycoproteomics of glycated milk casein (GMC) and GMC fermented by Lactobacillus casei 4B15 (FGMC), and determined their biological implications. There was a significant increase in the antioxidative and anti-inflammatory activities of GMC with galactose, which was higher than that of GMC with glucose (GMC-glc). Further, the fermentation of GMC by Lactobacillus casei 4B15 synergistically enhanced the above activities compared to those of unfermented GMC. Especially, fermented GMC-glc (FGMC-glc) possessed remarkably improved reducing power and radical scavenging activities...
May 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28504710/a1-beta-casein-milk-protein-and-other-environmental-pre-disposing-factors-for-type-1-diabetes
#17
REVIEW
J S J Chia, J L McRae, S Kukuljan, K Woodford, R B Elliott, B Swinburn, K M Dwyer
Globally type 1 diabetes incidence is increasing. It is widely accepted that the pathophysiology of type 1 diabetes is influenced by environmental factors in people with specific human leukocyte antigen haplotypes. We propose that a complex interplay between dietary triggers, permissive gut factors and potentially other influencing factors underpins disease progression. We present evidence that A1 β-casein cows' milk protein is a primary causal trigger of type 1 diabetes in individuals with genetic risk factors...
May 15, 2017: Nutrition & Diabetes
https://www.readbyqxmd.com/read/28497545/milk-protein-synthesis-is-regulated-by-t1r1-t1r3-a-g-protein-coupled-taste-receptor-through-the-mtor-pathway-in-the-mouse-mammary-gland
#18
Junqiang Liu, Yanhong Wang, Dewei Li, Yanhuan Wang, Menglu Li, Caifa Chen, Xingtang Fang, Hong Chen, Chunlei Zhang
SCOPE: Understanding the regulatory mechanism of milk protein synthesis is important to develop strategies to improve milk protein and enhance lactation performance. mTOR pathway is a crucial modulator of protein synthesis. In this study, we want to investigate if T1R1/T1R3 can regulate milk protein synthesis and mediate the mTOR pathway in the mice mammary gland in vivo. METHODS AND RESULTS: T1R1 knockout mice, WT mice, and mammary explants were used. The weigh-suckle-weigh method was used to quantify the milk yield...
May 12, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28495796/phosphorylation-of-nhe3-s-719-regulates-nhe3-activity-through-the-formation-of-multiple-signaling-complexes
#19
Rafiquel Sarker, Boyoung Cha, Olga Kovbasnjuk, Robert Cole, Sandra Gabelli, Chung Ming Tse, Mark Donowitz
Casein kinase 2 (CK2) binds to the NHE3 C-terminus and constitutively phosphorylates a down-stream site (S719) that accounts for 40% of basal NHE3 activity. The role of CK2 in regulation of NHE3 activity in polarized Caco-2/bbe cells was further examined by mutation of NHE3-S(719) to A (not phosphorylated) or D (phosphomimetic). NHE3-S719A but not -S719D had multiple changes in NHE3 activity consisting of a) reduced basal NHE3 activity: specifically, inhibition of the PI3-K/ AKT-dependent component. b) reduced acute stimulation of NHE3 activity by LPA/LPA5R stimulation...
May 11, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28490091/physico-chemical-characterization-of-dairy-gel-obtained-by-a-proteolytic-extract-from-calotropis-procera-a-comparison-with-chymosin
#20
Issa Ado Rayanatou, ElHadji Gounga Mahamadou, Gilles Garric, Marielle Harel-Oger, Arlette Leduc, Julien Jardin, Valérie Briard-Bion, Chantal Cauty, Hassane Adakal, Jean François Grongnet, Frédéric Gaucheron
Chymosin is the major enzyme used in cheesemaking but latex enzymes are also used. The aim of this work was to characterize the composition and the structure of dairy gel obtained by an extract of Calotropis procera leaves in comparison with those obtained by chymosin. The biochemical and mineral compositions of the curds and the cheese yields obtained by using Calotropis procera extract or chymosin were relatively similar. Quantitative and qualitative evaluations of proteolysis after milk coagulation, determined by the non-protein nitrogen content and chromatography coupled to mass spectrometry, indicated that Calotropis procera extract was more proteolytic than chymosin and that κ-casein was proteolyzed...
October 1, 2017: Food Chemistry
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