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https://www.readbyqxmd.com/read/28901272/disorders-of-mechanisms-of-calcium-metabolism-control-as-potential-risk-factors-of-prostate-cancer
#1
Dorota Skrajnowska, Barbara Bobrowska-Korczak, Andrzej Tokarz
Prostate cancer significantly affects the overall morbidity and mortality of malignant tumours in highly developed countries. Important risk factors include family predisposition and regional, racial and dietary determinants. The scientific literature contains a great deal of data on the role of calcium and dairy products in general in the process of neoplastic transformation of the prostate. This is most likely linked to the fact that changes in the concentration of calcium ions control such varied life processes as secretion of hormones and neurotransmitters, the level of cyclic nucleotides, and cell growth, division and differentiation...
September 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28888611/comparison-of-mammary-lipid-metabolism-in-dairy-cows-and-goats-fed-diets-supplemented-with-starch-plant-oil-or-fish-oil
#2
L Bernard, P G Toral, Y Chilliard
A direct comparison of cow and goat performance and milk fatty acid (FA) responses to diets known to induce milk fat depression in the bovine has suggested interspecies differences in rumen and mammary lipid metabolism. Thus, this study was conducted to infer some potential mechanisms responsible for the differences in mammary lipogenesis due to diet and ruminant species. To meet this objective, 12 cows and 15 goats were fed a basal diet (control), a similar diet supplemented with 2.2% fish oil (FO), or a diet containing 5...
November 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28880045/-factors-influencing-first-colostrum-calcium-concentration-in-holstein-friesian-cows-and-the-relationship-to-postpartum-calcium-concentration
#3
Maria Karl, Rudolf Staufenbiel
OBJECTIVE: To investigate the factors that affect the calcium content of the first colostrum (milk exclusively of the first withdrawal) and the relationship to the blood calcium concentration. We tested the hypotheses that the lactation number is the main influence factor and that there is a relationship to the postpartum serum calcium concentration. MATERIAL AND METHODS: An observational study was conducted from April 2012 to March 2013 at a commercial dairy farm (2278 Holstein-Friesian cows)...
September 5, 2017: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
https://www.readbyqxmd.com/read/28825541/determination-of-bovine-lactoferrin-in-food-by-hplc-with-a-heparin-affinity-column-for-sample-preparation
#4
Yin Zhang, Fei Lou, Wei Wu, Xin Dong, Jia Ren, Qiuguang Shen
An HPLC method was developed for the quantitative determination of bovine lactoferrin (bLF) in sterilized milk, modified milk, fermented milk, infant formula, adult formula, rice cereal, vitamin function drink, and protein powder products. bLF was first extracted with a phosphate buffer (pH 8), underwent cleanup in a heparin affinity column, and was detected by HPLC with a C4 column and diode-array detector at a wavelength of 280 nm. The proposed method provided a linear detection range of 10.0-1000 μg/mL with an LOD of 0...
January 1, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28763939/demographic-and-dietary-risk-factors-in-relation-to-urinary-metabolites-of-organophosphate-flame-retardants-in-toddlers
#5
M B Thomas, H M Stapleton, R L Dills, H D Violette, D A Christakis, S Sathyanarayana
Organophosphate flame retardants (OPFRs), including Tris (1,3-dichloro-isopropyl) phosphate (TDCPP), triphenyl phosphate (TPP), and isopropylated triphenyl phosphate (ITP), are increasingly used in consumer products because of the recent phase out of polybrominated diphenyl ether (PBDE) flame retardants. OPFRs have been widely detected in adults and have been linked to reproductive and endocrine changes in adult males. Carcinogenicity and damage to immunologic, neurologic and developmental systems have been observed in human cell lines...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28695065/-13-c-based-proteinogenic-amino-acid-paa-and-metabolic-flux-ratio-analysis-of-lactococcus-lactis-reveals-changes-in-pentose-phosphate-pp-pathway-in-response-to-agitation-and-temperature-related-stresses
#6
Kamalrul Azlan Azizan, Habtom W Ressom, Eduardo R Mendoza, Syarul Nataqain Baharum
Lactococcus lactis subsp. cremoris MG1363 is an important starter culture for dairy fermentation. During industrial fermentations, L. lactis is constantly exposed to stresses that affect the growth and performance of the bacterium. Although the response of L. lactis to several stresses has been described, the adaptation mechanisms at the level of in vivo fluxes have seldom been described. To gain insights into cellular metabolism, (13)C metabolic flux analysis and gas chromatography mass spectrometry (GC-MS) were used to measure the flux ratios of active pathways in the central metabolism of L...
2017: PeerJ
https://www.readbyqxmd.com/read/28551191/a-commercial-immune-modulating-feed-additive-restores-l-selectin-and-ccl5-expression-following-dexamethasone-treatment-of-murine-immune-cells-in-a-myd88-dependent-manner
#7
R J Ortiz-Marty, A Lewandowski, J D Chapman, I Kanevsky-Mullarky
Bovine mastitis costs the dairy industry billions of dollars every year and presents a health challenge in dairy facilities. Immunosuppressive effects of the periparturient period increase the incidence of mastitis. During this time, cattle experience an elevation in circulating cortisol, which reduces polymorphonuclear cell function and ability to clear infection. OmniGen-AF (OMN; Phibro Animal Health, Teaneck, NJ) is an immunomodulatory feed additive that alters gene expression and is used to reduce rates of mastitis...
May 24, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28530588/capillary-electrophoresis-coupled-to-mass-spectrometry-employing-hexafluoro-2-propanol-for-the-determination-of-nucleosides-and-nucleotide-mono-di-and-tri-phosphates-in-baby-foods
#8
María Mateos-Vivas, Javier Domínguez-Álvarez, Encarnación Rodríguez-Gonzalo, Rita Carabias-Martínez
The present work describes a method for the simultaneous determination of unmodified nucleosides and nucleotide mono-, di- and tri-phosphates by capillary electrophoresis coupled to mass spectrometry (CE-MS). The use of hexafluoro-2-propanol (HFIP) in the separation medium, and as an additive to the sheath liquid of the electrospray interface (ESI), generated a highly efficient and sensitive method. Instrumental limits of detection in the range of 14-53ngmL(-1) for nucleosides and 7-23, 20-49 and 64-124ngmL(-1) for nucleotide mono-, di-, and tri-phosphates, respectively, were found...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28493294/commercial-mineral-enhanced-dairy-by-products-as-sodium-replacers-antioxidants-and-calcium-fortifiers-in-sausages
#9
Anne Maren Engeloug, Gu Yi, Bjørg Egelandsdal, Anna Haug, Berit Nordvi
Sausages are perceived as high in Na and with a too high Na:K ratio. Frankfurter type sausages are regarded as important contributors of sodium in the diet and thereby of health risks. Surplus products from the dairy industry are various mineral powders enriched in either potassium, calcium, or phosphate and include various amounts of lactose. Sausages were produced at 3 sodium levels (equivalent to 13, 15, and 17 g NaCl/kg sausage) using 4 different milk ingredients (a dried skimmed milk powder, a calcium enriched milk powder, a potassium enriched powder, and a lactose enriched powder)...
June 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28457551/short-communication-comparative-proteomic-analysis-of-the-lactating-and-nonlactating-bovine-mammary-gland
#10
W T Dai, Q J Wang, Y X Zou, R R White, J X Liu, H Y Liu
The objective of this study was to determine how bovine mammary protein profiles vary during lactation and the dry period. Three lactating and 3 nonlactating cows were selected for mammary gland tissue sampling. Compared with the mammary proteins in nonlactating cows, a total of 60 differentially expressed proteins (DEP, including 57 upregulated and 3 downregulated) were identified in lactating cows using 2-dimensional difference gel electrophoresis combined with mass spectrometry. These DEP included enzymes and proteins associated with various macromolecular metabolic processes, and appeared to promote the increased metabolic activity associated with milk synthesis and secretion...
July 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28457125/solubility-of-calcium-phosphate-in-concentrated-dairy-effluent-brines
#11
K Kezia, J Lee, B Zisu, G Q Chen, S L Gras, S E Kentish
The solubility of calcium phosphate in concentrated dairy brine streams is important in understanding mineral scaling on equipment, such as membrane modules, evaporators, and heat exchangers, and in brine pond operation. In this study, the solubility of calcium phosphate has been assessed in the presence of up to 300 g/L sodium chloride as well as lactose, organic acids, and anions at 10, 30, and 50 °C. As a neutral molecule, lactose has a marginal but still detectable effect upon calcium solubility. However, additions of sodium chloride up to 100 g/L result in a much greater increase in calcium solubility...
May 24, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28434752/effects-of-intrauterine-infusion-of-escherichia-coli-lipopolysaccharide-on-uterine-health-resolution-of-purulent-vaginal-discharge-and-reproductive-performance-of-lactating-dairy-cows
#12
João G N Moraes, Paula R B Silva, Luís G D Mendonça, Alexandre A Scanavez, Joseane C C Silva, Ricardo C Chebel
The objectives of the current experiment were to evaluate the effects of intrauterine infusion of Escherichia coli lipopolysaccharide (LPS) in cows diagnosed with purulent vaginal discharge (PVD) on intrauterine cell population, resolution of PVD, uterine health, and reproductive performance. Jersey cows (n = 3,084) were examined using the Metricheck device to diagnose PVD at 35 ± 6 d postpartum. Purulent vaginal discharge was defined as the presence of purulent (≥50% pus) discharge detectable in the vagina...
April 20, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28418108/metabolic-characterization-and-transformation-of-the-non-dairy-lactococcus-lactis-strain-kf147-for-production-of-ethanol-from-xylose
#13
Kia Vest Petersen, Jianming Liu, Jun Chen, Jan Martinussen, Peter Ruhdal Jensen, Christian Solem
The non-dairy lactic acid bacterium Lactococcus lactis KF147 can utilize xylose as the sole energy source. To assess whether KF147 could serve as a platform organism for converting second generation sugars into useful chemicals, the authors characterized growth and product formation for KF147 when grown on xylose. In a defined medium KF147 was found to co-metabolize xylose and arginine, resulting in bi-phasic growth. Especially at low xylose concentrations, arginine significantly improved growth rate. To facilitate further studies of the xylose metabolism, the authors eliminated arginine catabolism by deleting the arcA gene encoding the arginine deiminase...
April 18, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28342973/effects-of-a-sustained-release-formulation-of-1-25-dihydroxyvitamin-d3-glycosides-for-milk-fever-prevention-on-serum-1-25-dihydroxyvitamin-d3-calcium-and-phosphorus-in-dairy-cows
#14
Heinrich Bachmann, Michael Lanz, Susanne Kehrle, Wolfgang Bittner, Annick Toggenburger, Georg A Mathis, Walter Rambeck
Milk fever (MF) is a metabolic disease in dairy cows around parturition. The clinical lead sign is muscular paresis leading in severe cases to paralysis of the affected animal. Multiparturient animals of high performing dairy breeds are most likely to be affected and have a high probability of recurrence. An acute drop in blood calcium levels causes the disease when the demand for calcium at the onset of lactation exceeds the ability to replete blood calcium levels through mobilization from bone and intestinal uptake...
March 23, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28342601/ultra-performance-liquid-chromatography-quadrupole-time-of-flight-mass-spectrometry-ms-e-based-untargeted-milk-metabolomics-in-dairy-cows-with-subclinical-or-clinical-mastitis
#15
Xiaomin Xi, Lai-Yu Kwok, Yuenan Wang, Chen Ma, Zhihui Mi, Heping Zhang
In this study, a novel metabolomics technique based on ultra-performance liquid chromatography-quadrupole-time of flight mass spectrometry in the MS(E) mode was used to investigate the milk metabolomics of healthy, subclinical, and clinical mastitis cows, which were classified based on somatic cell count and presentation of clinical symptoms. Meanwhile, univariate and multivariate statistical analyses were performed to identify the significant differences across the 3 groups. Compared with healthy milk samples, less glucose, d-glycerol-1-phosphate, 4-hydroxyphenyllactate, l-carnitine, sn-glycero-3-phosphocholine, citrate, and hippurate were detected in the clinical mastitic milk samples, whereas less d-glycerol-1-phosphate, benzoic acid, l-carnitine, and cis-aconitate were found in the subclinical mastitic milk samples...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318577/effect-of-dietary-mineral-phosphorus-and-phytate-on-in-situ-ruminal-phytate-disappearance-from-different-concentrates-in-dairy-cows
#16
E Haese, J Möhring, H Steingass, M Schollenberger, M Rodehutscord
The first objective of this study was to determine the influence of dietary composition on the in situ disappearance of phytate (InsP6) from wheat, corn, soybean meal, and rapeseed meal [solvent-extracted, without (RSM) or with (hRSM) heat treatment] in the rumen of dairy cows. The second objective was to assess the primary degradation products of InsP6 in the rumen. Three diets differing in phosphorus and InsP6 concentration (basal diet = 0.38% P in dry matter; high-P diet = 0.56% P; high-InsP6 diet = 0.39% P) were fed to 3 ruminally fistulated lactating Jersey cows in a 3 × 3 Latin square...
May 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28316482/monitoring-of-bioluminescent-lactobacillus-plantarum-in-a-complex-food-matrix
#17
Gi-Seong Moon, Arjan Narbad
A bioluminescent Lactobacillus plantarum (pLuc2) strain was constructed. The luminescent signal started to increase during the early exponential phase and reached its maximum in the mid-exponential phase in a batch culture of the strain. The signal detection sensitivity of the strain was the highest in PBS (phosphate buffered saline), followed by milk and MRS broth, indicating that the sensitivity was influenced by the matrix effect. The strain was used in millet seed fermentation which has a complex matrix and native lactic acid bacteria (LAB)...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28237600/chromium-concentrations-in-ruminant-feed-ingredients
#18
J W Spears, K E Lloyd, K Krafka
Chromium (Cr), in the form of Cr propionate, has been permitted for supplementation to cattle diets in the United States at levels up to 0.50 mg of Cr/kg of DM since 2009. Little is known regarding Cr concentrations naturally present in practical feed ingredients. The present study was conducted to determine Cr concentrations in feed ingredients commonly fed to ruminants. Feed ingredients were collected from dairy farms, feed mills, grain bins, and university research farms. Mean Cr concentrations in whole cereal grains ranged from 0...
May 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28131574/the-effects-of-fructose-and-phosphate-infusions-on-dry-matter-intake-of-lactating-cows
#19
Roni Yair, Michael S Allen
The objective of this study was to examine the effects of fructose and phosphate (Pi) infusions on dry matter intake by dairy cows to further understand the mechanisms controlling feed intake related to hepatic energy status. We performed 3 experiments in which we infused fructose and Pi intravenously or abomasally to Holstein cows. The first experiment used 8 cows (4-8 d postpartum) in a duplicated 4 × 4 Latin square experiment with 1 square of multiparous and 1 square of primiparous cows. A 2 × 2 factorial arrangement of treatments was used including jugular infusions of solutions (1 L/h) containing fructose or glucose (0...
April 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28120854/fruit-and-vegetables-consumption-is-associated-with-higher-vitamin-intake-and-blood-vitamin-status-among-european-adolescents
#20
J Mielgo-Ayuso, J Valtueña, I Huybrechts, C Breidenassel, M Cuenca-García, S De Henauw, P Stehle, A Kafatos, M Kersting, K Widhalm, Y Manios, E Azzini, D Molnar, L A Moreno, M González-Gross
BACKGROUND/OBJECTIVES: Current research in adults indicates that fruit and vegetable (FAV) consumption increases serum levels of vitamins C, E and folate of β-carotene and reduces homocysteine concentrations. The aim of the present study was to examine the association of FAV consumption on vitamin intakes and their impact on blood vitamin concentrations in European adolescents. SUBJECT/METHODS: This multi-center cross-sectional study included 702 (53.7% females) adolescents, aged 12...
April 2017: European Journal of Clinical Nutrition
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