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https://www.readbyqxmd.com/read/29455507/-effect-and-mechanism-of-total-flavone-of-epimedium-on-primary-callus-formation-in-ovariectomized-rats-with-fractures
#1
Xiao-Lin Shi, Bo-Cheng Liang, Peng Wu, Bo Wang, Zhen-Yu Shi, Ling-Cheng Kong, Jian-Liang Yao, Jun-Jun Huang, Chun-Wen Li
OBJECTIVE: To explore the effects and related mechanisms of total flavone of epimedium treatment(TFE)on primary callus for mation in ovariectomized rats. METHODS: Forty male SD rats weighted from 209 to 246 g and aged 6 to 8 weeks were selected. Six weeks after ovariectomy a femur fracture model with middiaphyseal segment fracture was established, estimated and randomly divided into TFE group (150 mg·kg⁻¹·d⁻¹) and control group(received saline). HE staining was used to evaluate the morphologic difference of primary callus during the bone callus healing between these two groups...
August 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29450143/purified-horse-milk-exosomes-contain-an-unpredictable-small-number-of-major-proteins
#2
Sergey E Sedykh, Lada V Purvinish, Artem S Monogarov, Evgeniya E Burkova, Alina E Grigor'eva, Dmitrii V Bulgakov, Pavel S Dmitrenok, Valentin V Vlassov, Elena I Ryabchikova, Georgy A Nevinsky
Exosomes are 40-100 nm nanovesicles containing RNA and different proteins. Exosomes containing proteins, lipids, mRNAs, and microRNAs are important in intracellular communication and immune function. Exosomes from different sources are usually obtained by combination of centrifugation and ultracentrifugation and according to published data can contain from a few dozens to thousands of different proteins. Crude exosome preparations from milk of eighteen horses were obtained for the first time using several standard centrifugations...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29448105/casein-kinase-2-phosphorylates-and-stabilizes-c-ebp%C3%AE-in-pancreatic-%C3%AE-cells
#3
Tomoko Takai, Tomokazu Matsuda, Yuki Matsuura, Kaho Inoue, Emi Suzuki, Ayumi Kanno, Maki Kimura-Koyanagi, Shun-Ichiro Asahara, Naoya Hatano, Wataru Ogawa, Yoshiaki Kido
During the development of type 2 diabetes, endoplasmic reticulum (ER) stress leads to pancreatic β cell failure. CCAAT/enhancer-binding protein (C/EBP) β is highly induced by ER stress and AMP-activated protein kinase (AMPK) suppression in pancreatic β cells, and its accumulation reduces pancreatic β cell mass. We investigated the phosphorylation state of C/EBPβ under these conditions. Casein kinase 2 (CK2) was found to co-localize with C/EBPβ in MIN6 cells. It phosphorylated S222 of C/EBPβ, a previously unidentified phosphorylation site...
February 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29442498/proteostasis-and-the-regulation-of-intra-and-extracellular-protein-aggregation-by-atp-independent-molecular-chaperones-lens-%C3%AE-crystallins-and-milk-caseins
#4
John A Carver, Heath Ecroyd, Roger J W Truscott, David C Thorn, Carl Holt
Molecular chaperone proteins perform a diversity of roles inside and outside the cell. One of the most important is the stabilization of misfolding proteins to prevent their aggregation, a process that is potentially detrimental to cell viability. Diseases such as Alzheimer's, Parkinson's, and cataract are characterized by the accumulation of protein aggregates. In vivo, many proteins are metastable and therefore under mild destabilizing conditions have an inherent tendency to misfold, aggregate, and hence lose functionality...
February 14, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29435722/l-arginine-regulates-protein-turnover-in-porcine-mammary-epithelial-cells-to-enhance-milk-protein-synthesis
#5
Qingquan Ma, Shengdi Hu, Makoto Bannai, Guoyao Wu
Milk is an important food for mammalian neonates, but its insufficient production is a nutritional problem for humans and other animals. Recent studies indicate that dietary supplementation with L-arginine (Arg) increases milk production in mammals, including sows, rabbits, and cows. However, the underlying molecular mechanisms remain largely unknown. The present study was conducted with porcine mammary epithelial cells (PMECs) to test the hypothesis that Arg enhances milk protein synthesis via activation of the mechanistic target of rapamycin (mTOR) cell signaling...
February 12, 2018: Amino Acids
https://www.readbyqxmd.com/read/29434550/select-skeletal-muscle-mrnas-related-to-exercise-adaptation-are-minimally-affected-by-different-pre-exercise-meals-that-differ-in-macronutrient-profile
#6
Pim Knuiman, Maria T E Hopman, Jeroen A Wouters, Marco Mensink
Background: Substantial research has been done on the impact of carbohydrate and fat availability on endurance exercise adaptation, though its role in the acute adaptive response to resistance exercise has yet to be fully characterized. Purpose: We aimed to assess the effects of a pre-resistance exercise isocaloric mixed meal containing different amounts of carbohydrates and fat, on post-resistance exercise gene expression associated with muscle adaptation. Methods: Thirteen young (age 21.2 ± 1.6 year), recreationally trained (VO2max 51...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29433910/effect-of-the-coexistence-of-sodium-caseinate-and-tween-20-as-stabilizers-of-food-emulsions-at-acidic-ph
#7
Luisa Perugini, Giuseppe Cinelli, Martina Cofelice, Andrea Ceglie, Francesco Lopez, Francesca Cuomo
In the present investigation the properties of edible nanoemulsions were studied. Sodium caseinate represents a good candidate for food emulsion preparations thanks to its surface-active properties and because it is perceived as a natural product by consumers. Nevertheless, it is very sensitive to acidic pH close to its isoelectric point and, if used as emulsion stabilizer, this aspect can negatively affect the emulsion stability. In order to prevent this drawback, sodium caseinate was used in combination with a non-ionic surfactant (Tween 20) as emulsifier of oil/water nanoemulsions...
February 5, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29433230/in-vitro-digestion-behavior-of-water-in-oil-in-water-emulsions-with-gelled-oil-water-inner-phases
#8
Jonathan Andrade, Amanda J Wright, Milena Corredig
Double emulsions may be able to protect and release in a controlled manner bioactive compounds during digestion of food matrices. It was hypothesized that the physical state and solid content in the inner phases of water-in-oil-in-water (W1/O/W2) emulsions may affect the overall stability and the release behavior of bioactives during in vitro digestion. Therefore, hydrophobic (phytosterols or Vitamin D3) and hydrophilic (Vitamin B12) molecules were incorporated in double emulsions prepared either with a liquid (soybean oil - SO) or oil-fat gel (soybean oil+trimyristin - STO) lipid phase and liquid internal aqueous phase...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29433200/relationship-between-nano-micro-structure-and-physical-properties-of-tio2-sodium-caseinate-composite-films
#9
Juan Manuel Montes-de-Oca-Ávalos, Davide Altamura, Roberto Jorge Candal, Francesco Scattarella, Dritan Siliqi, Cinzia Giannini, María Lidia Herrera
Films obtained by casting, starting from conventional emulsions (CE), nanoemulsions (NE) or their gels, which led to different structures, with the aim of explore the relationship between structure and physical properties, were prepared. Sodium caseinate was used as the matrix, glycerol as plasticizer, glucono-delta-lactone as acidulant to form the gels, and TiO2 nanoparticles as reinforcement to improve physical behavior. Structural characterization was performed by SAXS and WAXS (Small and Wide Angle X-ray Scattering, respectively), combined with confocal and scanning electron microscopy...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29433190/peptidome-profiles-and-bioactivity-elucidation-of-buffalo-milk-dairy-products-after-gastrointestinal-digestion
#10
Manuela Giovanna Basilicata, Giacomo Pepe, Eduardo Sommella, Carmine Ostacolo, Michele Manfra, Gennaro Sosto, Giuseppe Pagano, Ettore Novellino, Pietro Campiglia
Buffalo milk is highly appreciated for its nutritive properties and highly employed in dairy products, despite this the release of bioactive peptides has not been investigated thoroughly. The aim of this work was to characterize in detail the bioaccesible peptides from buffalo-milk dairy products. Six products were subjected to in vitro simulated gastrointestinal digestion and then analyzed by LC-HRMS. The identified peptides were 165 in Yoghurt, 152 in Scamorza, 146 in Mozzarella, 136 in Grana and Ricotta, 120 in Ice Cream samples, belonging to both buffalo caseins (αs1-, β-, k-CN) and whey proteins (α-LA, β-LG)...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29430093/grape-seed-extract-an-innovation-in-remineralization
#11
Ketaki Dinkar Jawale, Sharad Basavraj Kamat, Jayakumar Appasaheb Patil, Girish Shankar Nanjannawar, Rutuja Vijay Chopade
Aim: The aim of this study was to determine remineralizing potential of grape seed extract (GSE) compared to casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) and calcium glycerophosphate (CaGP) through pH-cycling model and subsequent evaluation using polarized light microscope (PLM). Subjects and Methods: Twenty sound human teeth fragments of ten teeth were obtained from the cervical portion of the roots and were stored in demineralizing solution for 96 h at 37°C to induce artificial root carious lesion...
November 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29429128/flow-rate-dependent-continuous-hydrolysis-of-protein-isolates
#12
Tim Sewczyk, Marieke Hoog Antink, Michael Maas, Stephen Kroll, Sascha Beutel
Food protein hydrolysates are often produced in unspecific industrial batch processes. The hydrolysates composition underlies process-related fluctuations and therefore the obtained peptide fingerprint and bioactive properties may vary. To overcome this obstacle and enable the production of specific hydrolysates with selected peptides, a ceramic capillary system was developed and characterized for the continuous production of a consistent peptide composition. Therefore, the protease Alcalase was immobilized on the surface of aminosilane modified yttria stabilized zirconia capillaries with a pore size of 1...
February 10, 2018: AMB Express
https://www.readbyqxmd.com/read/29428763/characterization-and-milk-coagulating-properties-of-cynanchum-otophyllum-schneid-proteases
#13
Jie Luo, Chen Xiao, Hao Zhang, Fazheng Ren, Xingen Lei, Zibiao Yang, Zhengquan Yu
The herbaceous plant, Cynanchum otophyllum Schneid., is widely used as a milk coagulant to make a Chinese traditional milk product, milk cake. However, the milk-clotting compounds and their mechanism remain unclear. In this study, crude proteases were extracted from the dried leaves of Cynanchum otophyllum Schneid. using citric acid-phosphate buffer and then partially purified by weak anion exchange chromatography. Two proteases, QA and QC, with molecular weights of 14 and 27 kDa, respectively, were shown to exhibit milk-clotting activity...
February 7, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29428747/peptidomic-screening-of-bitter-and-nonbitter-casein-hydrolysate-fractions-for-insulinogenic-peptides
#14
Niamh M Murray, Dolores O'Riordan, Jean-Christophe Jacquier, Michael O'Sullivan, Thérèse A Holton, Kieran Wynne, Randall C Robinson, Daniela Barile, Søren D Nielsen, David C Dallas
Sodium caseinate hydrolysates (NaCaH) contain biologically active peptides that can positively influence human health. However, their intense bitterness hinders their inclusion in food products. To our knowledge, no studies have investigated whether a correlation between bitterness and bioactivity exists in NaCaH, so it is not yet known what effect selective removal of bitterness has on NaCaH bioactivity. A deeper understanding of the physicochemical characteristics affecting both bitterness and bioactivity is therefore needed...
February 7, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29428746/technical-note-quantification-of-caseins-from-a-crude-extract-of-mammary-epithelial-cells
#15
Eric Chanat, Frédéric Dessauge
En masse secretion of milk proteins, notably the caseins in the form of casein micelles, is a unique feature of the milk-secreting mammary epithelial cell. Caseins are therefore specific markers of these cells and constitute an ideal tool to monitor their differentiation, as well as functional status, during the development of the gland. To use them as such, a reliable method for quantitative analysis of the caseins from mammary cells or tissue is needed. Here we show that the caseins are heat-stable, a feature that leads to their complete extraction from a complex cellular extract by boiling...
February 7, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29423390/dual-effects-of-high-protein-diet-on-mouse-skin-and-colonic-inflammation
#16
Xuelei Cui, Eunjung Kim
Chronic inflammation is a major etiology of cancer. Accumulating epidemiological and experimental evidences suggest that intake of high protein diet (HPD) is associated with colitis-associated colon cancer, however, most of the studies were confined in colon. Systemic influence of HPD on inflammation indices in different tissues of an organism has never been studied. We therefore investigated the effect of HPD on mouse skin and colonic inflammation using the well characterized inflammation induction protocol in both tissues (12- O -tetradecanoylphorbol-13-acetate [TPA] for skin and dextran sodium sulfate [DSS] for colon)...
January 2018: Clinical Nutrition Research
https://www.readbyqxmd.com/read/29422872/myocardial-ckip-1-overexpression-protects-from-simulated-microgravity-induced-cardiac-remodeling
#17
Shukuan Ling, Yuheng Li, Guohui Zhong, Yongjun Zheng, Qing Xu, Dingsheng Zhao, Weijia Sun, Xiaoyan Jin, Hongxing Li, Jianwei Li, Huiyuan Sun, Dengchao Cao, Jinping Song, Caizhi Liu, Xinxin Yuan, Xiaorui Wu, Yinlong Zhao, Zizhong Liu, Qi Li, Yingxian Li
Human cardiovascular system has adapted to Earth's gravity of 1G. The microgravity during space flight can induce cardiac remodeling and decline of cardiac function. At present, the mechanism of cardiac remodeling induced by microgravity remains to be disclosed. Casein kinase-2 interacting protein-1 (CKIP-1) is an important inhibitor of pressure-overload induced cardiac remodeling by decreasing the phosphorylation level of HDAC4. However, the role of CKIP-1 in the cardiac remodeling induced by microgravity is unknown...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29422098/screening-of-intact-yeasts-and-cell-extracts-to-reduce-scrapie-prions-during-biotransformation-of-food-waste
#18
David Huyben, Sofia Boqvist, Volkmar Passoth, Lena Renström, Ulrika Allard Bengtsson, Olivier Andréoletti, Anders Kiessling, Torbjörn Lundh, Ivar Vågsholm
Yeasts can be used to convert organic food wastes to protein-rich animal feed in order to recapture nutrients. However, the reuse of animal-derived waste poses a risk for the transmission of infectious prions that can cause neurodegeneration and fatality in humans and animals. The aim of this study was to investigate the ability of yeasts to reduce prion activity during the biotransformation of waste substrates-thereby becoming a biosafety hurdle in such a circular food system. During pre-screening, 30 yeast isolates were spiked with Classical Scrapie prions and incubated for 72 h in casein substrate, as a waste substitute...
February 8, 2018: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/29417998/preparation-of-konjac-glucomannan-casein-blending-gels-optimized-by-response-surface-methodology-and-assessment-of-the-effects-of-high-pressure-processing-on-their-gel-properties-and-structure
#19
Fusheng Zhang, Qiao Fan, Hongyun Li, Hourong Chen, Jiong Zheng
BACKGROUND: In order to improve the compatibility of polysaccharide-protein mixtures and enhance their performance, a response surface methodology (RSM) was used to optimize the preparation conditions of konjac glucomannan (KGM)/casein (CS) blend gel. Moreover, the effects of high-pressure processing (HPP) on the gel properties and structure were also investigated. RESULTS: The optimal preparation parameters were a temperature of 60 °C, a total concentration 40 g kg-1 , and a dietary alkali concentration 5 g kg-1 ...
February 8, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29417222/aspartic-acid-introduce-the-functional-amine-groups-on-the-surface-of-superparamagnetic-fe-oh-3-fe3o4-nanoparticles-for-efficient-immobilization-of-penaeus-vannamei-protease
#20
Mohsen Moslemi, Ahmad Homaei, Hojjat Toiserkani
In this study, we synthesized super magnetic Fe(OH)3@Fe3O4 nanoparticles (SPIONs) by the co-precipitation method and introduction of amine groups via chemisorption of L-aspartic acid (LAA) on the surface of SPIONs. Penaeus vannamei protease (PVP) was immobilized onto amine-functionalized supermagnetic nanoparticles (ASPIONs), and conditions affecting PVP immobilization were investigated. PVP immobilized onto ASPIONs exhibited shifts in both working optimum pH and temperature with an increase from pH 7 to pH 8, and increased optimum temperature by 10 °C compared to free enzyme...
February 7, 2018: Bioprocess and Biosystems Engineering
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