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https://www.readbyqxmd.com/read/28212322/detection-of-salmonella-typhimurium-on-spinach-using-phage-based-magnetoelastic-biosensors
#1
Fengen Wang, Shin Horikawa, Jiajia Hu, Howard C Wikle, I-Hsuan Chen, Songtao Du, Yuzhe Liu, Bryan A Chin
Phage-based magnetoelastic (ME) biosensors have been studied as an in-situ, real-time, wireless, direct detection method of foodborne pathogens in recent years. This paper investigates an ME biosensor method for the detection of Salmonella Typhimurium on fresh spinach leaves. A procedure to obtain a concentrated suspension of Salmonella from contaminated spinach leaves is described that is based on methods outlined in the U.S. FDA Bacteriological Analytical Manual for the detection of Salmonella on leafy green vegetables...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28208995/a-comparative-analysis-of-caries-inhibitory-effect-of-remineralizing-agents-on-human-enamel-treated-with-er-yag-laser-an-in-vitro-atomic-emission-spectrometry-analysis
#2
Aswin Saseendran Nair, R Krishna Kumar, Sunil Thomas Philip, Syed Shaheed Ahameed, Sairaj Punnathara, Joby Peter
INTRODUCTION: The tug of war to maintain tooth integrity is dependent on a ratio between demineralization and remineralization. Hence, demineralization should be retarded and remineralization should be enhanced to maintain a natural equilibrium in the oral cavity. AIM: To compare in-vitro acid resistance of human enamel when using Casein Phosphopeptides Amorphous Calcium Phosphate (CPP-ACP) [GC Tooth mousse] cream, Casein Phosphopeptide Amorphous Calcium Fluoride Phosphate (CPP-ACFP) [GC Tooth mousse plus] cream, Er:YAG laser alone, combination of CPP-ACP with Er:YAG laser, CPP-ACFP with Er:YAG laser...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208259/ultrasensitive-electrochemical-detection-of-mirna-21-using-a-zinc-finger-protein-specific-to-dna-rna-hybrids
#3
Chiew San Fang, Kwang-Sun Kim, Byeongjun Yu, Sangyong Jon, Moon-Soo Kim, Haesik Yang
Both high sensitivity and high specificity are crucial for detection of miRNAs that have emerged as important clinical biomarkers. Just Another Zinc finger proteins (JAZ, ZNF346) bind preferably (but nonsequence-specifically) to DNA-RNA hybrids over single-stranded RNAs, single-stranded DNAs, and double-stranded DNAs. We present an ultrasensitive and highly specific electrochemical method for miRNA-21 detection based on the selective binding of JAZ to the DNA-RNA hybrid formed between a DNA capture probe and a target miRNA-21...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28202471/oocyte-shuttle-a-recombinant-protein-transporting-donor-dna-into-the-xenopus-oocyte-in-situ
#4
Duri Rungger, Lisbeth Muster, Oleg Georgiev, Elisabeth Rungger-Brändle
The newly developed oocyte shuttle protein contains a streptavidin moiety that tightly binds biotinylated DNA. Injected intravenously into adult Xenopus females, the protein-DNA complex is rapidly transported through the bloodstream and, within the ovary, the vitellogenin ligand present in the protein binds to the receptors at the surface of the oocytes. The bound complex is internalized and translocates into the oocyte nucleus thanks to an SV40 nuclear localization signal, enhanced by an adjacent casein kinase phosphorylation site...
February 15, 2017: Biology Open
https://www.readbyqxmd.com/read/28202335/purification-and-characterization-of-a-milk-clotting-aspartic-protease-from-withania-coagulans-fruit
#5
Mahmoud Salehi, Mahmoud Reza Aghamaali, Reza H Sajedi, S Mohsen Asghari, Eisa Jorjani
Withania coagulans fruit has traditionally been used as milk coagulant. The present study reports the purification and characterization of an aspartic protease from W. coagulans fruit. The enzyme was purified via fractional ammonium sulfate precipitation and cation exchange chromatography. SDS-PAGE analysis revealed the presence of a monomeric protein with molecular weight of 31kDa. Proteolytic activity (PA) of the protease was evaluated using casein, and the milk-clotting activity (MCA) was analyzed by skim milk...
February 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28199383/correction-identification-of-a-tumor-specific-active-site-mutation-in-casein-kinase-1%C3%AE-by-chemical-proteomics
#6
Eric S Okerberg, Anna Hainley, Heidi Brown, Arwin Aban, Senait Alemayehu, Ann Shih, Jane Wu, Matthew P Patricelli, John W Kozarich, Tyzoon Nomanbhoy, Jonathan S Rosenblum
[This corrects the article DOI: 10.1371/journal.pone.0152934.].
2017: PloS One
https://www.readbyqxmd.com/read/28196025/autophagy-induced-by-cx-4945-a-casein-kinase-2-inhibitor-enhances-apoptosis-in-pancreatic-cancer-cell-lines
#7
Dae Wook Hwang, Kwang Sup So, Song Cheol Kim, Kwang-Min Park, Young-Joo Lee, Sun-Whe Kim, Chang-Min Choi, Jin Kyung Rho, Yun Jung Choi, Jae Cheol Lee
OBJECTIVES: Pancreatic cancer is the most lethal malignancy with only a few effective chemotherapeutic drugs. Because the inhibition of casein kinase 2 (CK2) has been reported as a novel therapeutic strategy for many cancers, we investigated the effects of CK2 inhibitors in pancreatic cancer cell lines. METHODS: The BxPC3, 8902, Mia PaCa-2 human pancreatic cancer cell lines, and CX-4945, a novel CK2 inhibitor, were used. Autophagy was analyzed by acridine orange staining, fluorescence microscope detection of punctuate patterns of GFP-tagged LC3 and immunoblotting for LC3...
February 14, 2017: Pancreas
https://www.readbyqxmd.com/read/28193539/dimeric-but-not-monomeric-%C3%AE-lactalbumin-potentiates-apoptosis-by-up-regulation-of-atf3-and-reduction-of-histone-deacetylase-activity-in-primary-and-immortalised-cells
#8
Julie A Sharp, Amelia J Brennan, Galina Polekhina, David B Ascher, Christophe Lefevre, Kevin R Nicholas
α-lactalbumin is a protein of dual function found in milk of most mammals. α-lactalbumin binds β-1,4-galactosyltransferase to form the regulatory subunit for lactose synthesis and has also been shown to cause cell death. This study shows, for the first time, that α-lactalbumin isolated in a rare 28kDa dimeric form induces cell death, while 14kDa monomeric α-lactalbumin is inactive. In contrast to the casein derived and chemically induced α-lactalbumin variants, MAL and HAMLET/BAMLET, the effects of 28kDa α-lactalbumin are calcium independent and, unlike MAL and HAMLET, 28kDa α-lactalbumin dimer causes cell death of primary mammary cells and a variety of immortalised cell lines, which are committed to cell death pathways within 1-4h of exposure...
February 10, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28192992/protein-adsorbed-magnetic-nanoparticle-mediated-assay-for-rapid-detection-of-bacterial-antibiotic-resistance
#9
Taku A Cowger, Yaping Yang, David E Rink, Trever Todd, Hongmin Chen, Ye Shen, Yajun Yan, Jin Xie
Antibiotic susceptibility tests have been used for years as a crucial diagnostic tool against antibiotic-resistant bacteria. However, due to a lack of biomarkers specific to resistant types, these approaches are often time-consuming, inaccurate, and inflexible in drug selections. Here, we present a novel susceptibility test method named protein-adsorbed nanoparticle-mediated matrix-assisted laser desorption-ionization mass spectrometry, or PANMS. Briefly, we adsorb five different proteins (β-casein, α-lactalbumin, human serum albumin, fibrinogen, and avidin) onto the surface of Fe3O4...
February 17, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28187683/proteomics-profiling-of-chimeric-truncated-tissue-plasminogen-activator-producing-chinese-hamster-ovary-cells-cultivated-in-a-chemically-defined-medium-supplemented-with-protein-hydrolysates
#10
Bahareh Azarian, Seyedeh Matin Sajedin, Amin Azimi, Mozhgan Raigani, Behrouz Vaziri, Fatemeh Davami
Background: Culture media enrichment through the addition of protein hydrolysates is beneficial for achieving higher protein expression. Methods: In this study, designing the optimum mixture of four soy and casein-derived hydrolysates was successfully performed by design of experiment and specific productivity increased in all predicted combinations. Protein profile of recombinant CHO (rCHO) cells producing tissue plasminogen activator in a serum-free medium (SFM) supplemented with designed hydrolysate additives was compared to that of rCHO cells cultivated in SFM...
11, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28181729/the-dietary-protein-paradox-and-threonine-15-n-depletion-pyridoxal-5-phosphate-enzyme-activity-as-a-mechanism-for-the-%C3%AE-15-n-trophic-level-effect
#11
B T Fuller, K J Petzke
RATIONALE: Nitrogen stable isotope ratios (δ(15) N values) are used to reconstruct dietary patterns, but the biochemical mechanism(s) responsible for the diet to tissue trophic level effect and its variability are not fully understood. Here δ(15) N amino acid (AA) values and physiological measurements (nitrogen intake, plasma albumin concentrations, liver reduced glutathione concentrations and leucine oxidation rates) are used to investigate increased dietary protein consumption and oxidative stress (vitamin E deficiency) in rat total plasma protein...
February 9, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28178627/fundamentals-of-protein-and-cell-interactions-in-biomaterials
#12
REVIEW
Hammed Tanimowo Aiyelabegan, Esmaeil Sadroddiny
The extracellular matrix (ECM) is an active and complex microenvironment with outstanding biomechanical, biophysical, and biochemical characteristics, which can indirectly or directly controls cell adhesion, migration, proliferation, and differentiation, as well as partaking in regeneration and homeostasis of organs and tissues. The ECM has captivated a great deal of attention with the rapid progress of tissue engineering (TE) in the field of regenerative medicine (RM). Approaches to TE, RM and cancer therapy center on the necessity to deliver cell signals to direct cell proliferation and differentiation...
February 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28178612/dietary-soy-protein-improves-adipose-tissue-dysfunction-by-modulating-parameters-related-with-oxidative-stress-in-dyslipidemic-insulin-resistant-rats
#13
Paola G Illesca, Silvina M Álvarez, Dante A Selenscig, María Del R Ferreira, María S Giménez, Yolanda B Lombardo, María E D'Alessandro
The present study investigates the benefits of the dietary intake of soy protein on adipose tissue dysfunction in a rat model that mimics several aspects of the human metabolic syndrome. Wistar rats were fed a sucrose-rich diet (SRD) for 4 months. After that, half of the animals continued with SRD until month 8 while in the other half, casein protein was replaced by isolated soy protein for 4 months (SRD-S). A reference group consumed a control diet all the time. In adipose tissue we determined: i) the activities of antioxidant enzymes, gene expression of Mn-superoxide dismutase (SOD) and glutathione peroxidase (GPx), and glutathione redox state ii) the activity of xanthine oxidase (XO), ROS levels and the gene expression of NAD(P)H oxidase iii) the expression of the nuclear factor erythroid-2 related factor-2 (Nrf2)...
February 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28168650/gsdma3-is-required-for-mammary-gland-development-in-mice
#14
Haiying Guo, Senlin Xu, Yingxin Liu, Yang Yang, Fang Deng, Yizhan Xing, Xiaohua Lian, Yuhong Li
AE (alopecia and excoriation) is a mouse mutant phenotype that harbours a mutation in Gsdma3. Gsdma3 has been reported to regulate the development of skin and hair follicles. However, its role in the mammary glands has not been reported. In this study, we found that descendants bred from an AE mother died within 12 days after birth. Then, we found that the expression of Gsdma3 varied among the developmental stages of mammary glands. Subsequently, we systematically studied the phenotype of the mammary glands of AE and wild-type mice, revealing that the mammary glands were smaller in AE mice...
February 6, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28167209/efficacy-of-protease-inhibitor-from-marine-streptomyces-sp-vitbvk2-against-leishmania-donovani-an-in-vitro-study
#15
Veena Sreedharan, K V Bhaskara Rao
In the present study the leishmanicidal effect of potential protease inhibitor producing marine actinobacterial isolate has been investigated against Leishmania donovani, the causative agent of visceral leishmaniasis. Among 89 marine actinobacteria isolated from a salt pan in Kanyakumari, only one isolate (BVK2) showed 97% of protease inhibition activity against trypsin. Moderate to high protease inhibitor activity was shown by isolate BVK2 on proteinase (30%) and chymotrypsin (85%). In optimization study for protease inhibitor production glucose as carbon source and casein as nitrogen source showed the best activity...
February 4, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28164251/state-dependent-block-of-voltage-gated-sodium-channels-by-the-casein-kinase-1-inhibitor-ic261
#16
Karl J Föhr, Uwe Knippschild, Anna Herkommer, Michael Fauler, Christian Peifer, Michael Georgieff, Oliver Adolph
Background and Purpose IC261 (3-[(2,4,6-trimethoxyphenyl)methylidenyl]-indolin-2-one) has previously been introduced as an isoform specific inhibitor of casein kinase 1 (CK1) causing cell cycle arrest or cell death of established tumor cell lines. However, it is reasonable to assume that not all antitumor activities of IC261 are mediated by the inhibition of CK1. Meanwhile there is growing evidence that functional voltage-gated sodium channels are also implicated in the progression of tumors as their blockage suppresses tumor migration and invasion of different tumor cell lines...
February 6, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28163385/an-oxidized-reduced-state-of-plasma-albumin-reflects-malnutrition-due-to-an-insufficient-diet-in-rats
#17
Masashi Kuwahata, Mari Hasegawa, Yukiko Kobayashi, Yasuaki Wada, Yasuhiro Kido
We examined whether protein- and food-intake restrictions modulate the oxidized/reduced state of plasma albumin in Sprague-Dawley rats. Rats were fed a 3%, 5%, 10% or 20% casein diet for 2 weeks. The plasma albumin concentration significantly decreased with decreasing protein intake. However, no significant difference in plasma albumin concentration was seen between rats fed the 5% or 10% casein diet. In rats fed the 5% casein diet, the percentage of mercaptalbumin within total plasma albumin was significantly lower and that of nonmercaptalbumin-1 was significantly higher than in rats fed the 10% casein diet...
January 2017: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/28163130/improved-thermal-stability-and-mechanical-properties-of-type-i-collagen-by-crosslinking-with-casein-keratin-and-soy-protein-isolate-using-transglutaminase
#18
Xiaomeng Wu, Yaowei Liu, Anjun Liu, Wenhang Wang
The inferior thermal- stability of collagen hinders its extensive application in food industry, including edible packaging. To improve the thermal- stability and mechanical properties of collagen, we attempted to crosslink collagen with some proteins possessing excellent thermal stability (i. e., casein, keratin and soy protein isolate (SPI)). Observed from the SDS- PAGE and particle size distribution, some complexes with higher molecule weight and relative bigger size particle occurred in the protein mixture, especially after TGase crosslinking...
February 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28159383/baked-milk-tolerant-patient-is-there-any-special-feature
#19
C P G Barbosa, A P M Castro, G H Yonamine, A K F Gushken, C M L Beck, P R C Macedo, M B Dorna, C J N Santos, A C Pastorino, C M A Jacob
BACKGROUND: Determining whether patients with cow's milk allergy (CMA) can tolerate foods produced with baked milk could provide a better quality of life, a better prognosis, and an option for desensitization. OBJECTIVES: The aim of this study was to identify which patients over four years of age with persistent CMA could tolerate baked milk, to compare the clinical and laboratory characteristics of reactive and non-reactive groups and to describe their clinical evolution...
February 1, 2017: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/28159274/immunomodulatory-activity-of-protein-hydrolysates-derived-from-virgibacillus-halodenitrificans-sk1-3-7-proteinase
#20
Tidarat Toopcham, Jurriaan J Mes, Harry J Wichers, Jirawat Yongsawatdigul
Modulation of inflammation-related immune response on THP-1 macrophages of protein hydrolysates derived from tilapia mince, casein and pea protein, were investigated. The protein substrates were hydrolyzed by Virgibacillus halodenitrificans SK1-3-7 proteinase. The degree of hydrolysis (DH) of casein was observed to be the highest throughout the course of hydrolysis. When challenging THP-1 macrophages, tilapia mince hydrolysate (TMH) enhanced innate immunity through induction of IL-1β and COX-2 expression. Anti-inflammatory activity was observed in casein hydrolysate (CH) and pea protein hydrolysate (PPH) by attenuating lipopolysaccharide- (LPS) induced pro-inflammatory gene expression in THP-1 macrophages...
June 1, 2017: Food Chemistry
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