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https://www.readbyqxmd.com/read/28110194/the-cardioprotective-effect-of-total-flavonoids-on-myocardial-ischemia-reperfusion-in-rats
#1
Dongling Lv, Xiaohu Cheng, Lingyi Tang, Meng Jiang
The flowers of Abelmoschus manihot (L.) Medic is a traditional Chinese medicine used for the treatment of ischemic diseases. The present study is to investigate whether total flavones (TA) of extracted from Abelmoschus manihot L. Medic has the potential cardioprotective effect on myocardial ischemia/reperfusion (I/R) damage in rats. The index of myocardial injury, inflammatory biomarkers and NLRP3-related parameters were measured, respectively. The results demonstrated that compared to I/R group, TA reduced myocardial infarction area, declined serum creatinine kinase (CK), lactate dehydrogenase (LDH) levels, attenuated serum interleukin-6 (IL-6), IL-1β and tumour necrosis factor (TNF-α) production...
January 19, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28110122/17%C3%AE-estradiol-enhances-sulforaphane-cardioprotection-against-oxidative-stress
#2
Cristina Angeloni, Gabriella Teti, Maria Cristina Barbalace, Marco Malaguti, Mirella Falconi, Silvana Hrelia
The lower incidence of ischemic heart disease in female with respect to male gender suggests the possibility that female sex hormones could have specific effects in cardiovascular protection. 17β-Estradiol is the predominant premenopausal circulating form of estrogen and has a protective role on the cardiovascular system. Recent evidences suggest that gender can influence the response to cardiovascular medications; therefore, we hypothesized that sex hormones could also modulate the cardioprotective effects of nutraceutical compounds, such as the isothiocyanate sulforaphane, present in Brassica vegetables...
January 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28110078/escherichia-coli-hgt-engineered-for-high-glucose-throughput-even-under-slowly-growing-or-resting-conditions
#3
Annette Michalowski, Martin Siemann-Herzberg, Ralf Takors
Aerobic production-scale processes are constrained by the technical limitations of maximum oxygen transfer and heat removal. Consequently, microbial activity is often controlled via limited nutrient feeding to maintain it within technical operability. Here, we present an alternative approach based on a newly engineered Escherichia coli strain. This E. coli HGT (high glucose throughput) strain was engineered by modulating the stringent response regulation program and decreasing the activity of pyruvate dehydrogenase...
January 18, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28110019/cancer-cell-metabolism-and-mitochondria-nutrient-plasticity-for-tca-cycle-fueling
#4
REVIEW
Cyril Corbet, Olivier Feron
Warburg's hypothesis that cancer cells take up a lot of glucose in the presence of ambient oxygen but convert pyruvate into lactate due to impaired mitochondrial function led to the misconception that cancer cells rely on glycolysis as their major source of energy. Most recent (13)C-based metabolomic studies, including in cancer patients, indicate that cancer cells may also fully oxidize glucose. In addition to glucose-derived pyruvate, lactate, fatty acids and amino acids supply substrates to the TCA cycle to sustain mitochondrial metabolism...
January 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28109962/endothelial-permeability-and-hemostasis-in-septic-shock-results-from-the-process-trial
#5
Peter Hou, Michael Filbin, Henry Wang, Long Ngo, David T Huang, William C Aird, Donald M Yealy, Derek C Angus, John A Kellum, Nathan I Shapiro
BACKGROUND: We studied patients from the Protocolized Care in Early Septic Shock (ProCESS) trial to determine: the effects of alternative resuscitation strategies on circulating markers of endothelial cell permeability and hemostasis, and; the association between biomarkers and mortality. METHODS: Prospective study of biomarkers of endothelial cell permeability (vegf, sflt-1, ang-2) and hemostasis (vwf, thrombomodulin, tpa) in 605 of the 1341 ProCESS participants in a derivation cohort and 305 in validation...
January 18, 2017: Chest
https://www.readbyqxmd.com/read/28109806/momordica-charantia-polysaccharides-ameliorate-oxidative-stress-hyperlipidemia-inflammation-and-apoptosis-during-myocardial-infarction-by-inhibiting-the-nf-%C3%AE%C2%BAb-signaling-pathway
#6
Mohammad Raish
The polysaccharide extract of Momordica charantia has various biological activities; however, its effect on endothelial dysfunction in myocardial infarction remains unclear. To elucidate this, myocardial infarction was induced in rats using isoproterenol (ISP). Pretreatment with M. charantia polysaccharides (MCP; 150 or 300mg/kg) for 25days significantly inhibited increases in heart weight, the heart-weight-to-body-weight ratio, and infarction size, and ameliorated the increased serum levels of aspartate transaminase, creatine kinase, lactate dehydrogenase, total cholesterol, triglycerides, very-low-density lipoprotein cholesterol, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol...
January 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28109608/health-physiology-and-behavior-of-dairy-calves-reared-on-4-different-substrates
#7
M A Sutherland, G M Worth, C Cameron, C M Ross, D Rapp
The objective of this study was to compare the health, physiology, and behavior of group-housed calves reared on wood shavings with those reared on alternative surfaces. At 1 wk of age, 80 calves were moved into 1 of 20 experimental pens (n = 4 calves/pen) where they remained until 6 wk of age. Pens had floors covered with pea gravel (PG), rubber chip (RC), sand (SA), or wood shavings (WS; n = 5 pens/substrate). Body weight, cleanliness, health, and skin surface and vaginal temperature were recorded at 1, 3, and 6 wk of age...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109602/strategies-to-gain-body-condition-score-in-pasture-based-dairy-cows-during-late-lactation-and-the-far-off-nonlactating-period-and-their-interaction-with-close-up-dry-matter-intake
#8
J R Roche, A Heiser, M D Mitchell, M A Crookenden, C G Walker, J K Kay, M Vailati Riboni, J J Loor, S Meier
In pasture-based systems, cows are generally thinner at the end of lactation than cows fed total mixed rations and, as a result, over-feeding of metabolizable energy (ME) during the far-off nonlactating period is a standard management policy to achieve optimum calving body condition score (BCS). An alternative would be to manage cows to gain BCS through late lactation, such that cows ended lactation close to optimum calving BCS and maintenance of BCS through to calving. We sought to quantify the effect of moderate or excessive ME intakes during the far-off nonlactating period in cows that had been managed to gain or maintain BCS through late lactation and whether the far-off management strategy interacted with close-up level of feeding...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109601/effects-of-rumen-protected-capsicum-oleoresin-on-immune-responses-in-dairy-cows-intravenously-challenged-with-lipopolysaccharide
#9
J Oh, M Harper, F Giallongo, D M Bravo, E H Wall, A N Hristov
The objective of this experiment was to investigate the effects of rumen-protected Capsicum oleoresin (RPC) on productivity and immune responses including feed intake, milk yield and composition, white and red blood cells, lipid peroxidation, and blood concentration of cortisol, haptoglobin, glucose, and insulin in lactating dairy cows experimentally challenged with lipopolysaccharide (LPS). The experiment was a replicated 3 × 3 Latin square design with 9 multiparous Holstein cows in three 28-d periods. Treatments were 0 (control), 100, and 200 mg of RPC/cow per day, mixed with small portions of the total mixed ration and top-dressed...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109599/effect-of-intramammary-infusion-of-chitosan-hydrogels-at-drying-off-on-bovine-mammary-gland-involution
#10
S Lanctôt, P Fustier, A R Taherian, B Bisakowski, X Zhao, P Lacasse
The transition from lactation to the dry period in dairy cows is a period of high risk for acquiring new intramammary infections. This risk is reduced when the involution of the mammary gland is completed. Accordingly, approaches that speed up the involution process after drying-off could reduce the incidence of mastitis. The current study aimed to develop a biological response modifier that could be injected into cow teats to promote immune cell migration and speed up involution. Chitosan, a natural polysaccharide derived from chitin, is able to trigger host innate immunity...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109598/identification-and-analysis-of-the-expression-of-microrna-from-lactating-and-nonlactating-mammary-glands-of-the-chinese-swamp-buffalo
#11
Xiaoyan Cai, Qingyou Liu, Xiaoxi Zhang, Yanping Ren, Xiaocan Lei, Sheng Li, Qiuping Chen, Kai Deng, Ping Wang, Haihang Zhang, Deshun Shi
To study the role of microRNA (miR) in the lactation physiology of water buffalo, 2 multiparous dairy buffaloes (including an 8-yr-old buffalo that had been lactating for 3 mo, as well as a 10-yr-old nonlactating, nonpregnant buffalo) were used for miR library construction. The profile of differentially expressed miR in lactating and nonlactating mammary gland tissues of these water buffalo were investigated using Illumina-Solexa high-throughput sequencing technology (Illumina, San Diego, CA). The data identified 259 miR families, 359 mature miR, 363 pre-miR, 230 novel buffalo miR, and 5 buffalo-specific miR that were expressed in mammary tissues...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109597/weather-influences-feed-intake-and-feed-efficiency-in-a-temperate-climate
#12
Davina L Hill, Eileen Wall
A key goal for livestock science is to ensure that food production meets the needs of an increasing global population. Climate change may heighten this challenge through increases in mean temperatures and in the intensity, duration, and spatial distribution of extreme weather events, such as heat waves. Under high ambient temperatures, livestock are expected to decrease dry matter intake (DMI) to reduce their metabolic heat production. High yielding dairy cows require high DMI to support their levels of milk production, but this may increase susceptibility to heat stress...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109593/apparent-ruminal-synthesis-of-b-vitamins-in-lactating-dairy-cows-fed-diets-with-different-forage-to-concentrate-ratios
#13
M Seck, J A Voelker Linton, M S Allen, D S Castagnino, P Y Chouinard, C L Girard
Effects of the forage-to-concentrate ratio on apparent ruminal synthesis of thiamine, riboflavin, niacin, vitamin B6, folates, and vitamin B12 were evaluated in an experiment using 14 ruminally and duodenally cannulated Holstein cows. The experiment was a crossover design with two 15-d treatment periods and a 14-d preliminary period in which cows were fed a diet intermediate in composition between the treatment diets. Treatments were diets containing low-forage (44.8% forage, 32.8% starch, 24.4% neutral detergent fiber) or high-forage (61...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109592/short-communication-limitations-of-glucose-tolerance-tests-in-the-assessment-of-peripheral-tissue-insulin-sensitivity-during-pregnancy-and-lactation-in-dairy-heifers
#14
J De Koster, M Van Eetvelde, K Hermans, W Van den Broeck, M Hostens, G Opsomer
The aim of the present study was to point at the limitations of glucose tolerance tests (GTT) to assess peripheral tissue insulin sensitivity in dairy heifers in different physiological states (pregnancy and lactation). Intravenous GTT were performed in 5 nonpregnant, nonlactating heifers, 5 heifers at the end of pregnancy (12-7 d before calving), and 5 lactating primiparous cows (11-14 d after calving). Glucose and insulin concentrations were determined and area under the curve (AUC) and clearance rate of glucose and insulin were calculated...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109590/phenotypic-genetic-and-single-nucleotide-polymorphism-marker-associations-between-calf-diseases-and-subsequent-performance-and-disease-occurrences-of-first-lactation-german-holstein-cows
#15
M Mahmoud, T Yin, K Brügemann, S König
A total of 31,396 females born from 2010 to 2013 in 43 large-scale Holstein-Friesian herds were phenotyped for calf and cow disease traits using a veterinarian diagnosis key. Calf diseases were general disease status (cGDS), calf diarrhea (cDIA), and calf respiratory disease (cRD) recorded from birth to 2 mo of age. Incidences were 0.48 for cGDS, 0.28 for cRD, and 0.21 for cDIA. Cow disease trait recording focused on the early period directly after calving in first parity, including the interval from 10 d before calving to 200 d in lactation...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109589/effects-of-precalving-body-condition-and-prepartum-feeding-level-on-gene-expression-in-circulating-neutrophils
#16
M A Crookenden, C G Walker, A Heiser, A Murray, V S R Dukkipati, J K Kay, S Meier, K M Moyes, M D Mitchell, J J Loor, J R Roche
Extensive metabolic, physiological, and immunological changes are associated with calving and the onset of lactation. As a result, cows transitioning between pregnancy and lactation are at a greater risk of metabolic and infectious diseases. The ability of neutrophils to mount an effective immune response to an infection is critical for its resolution, and increasing evidence indicates that precalving nutrition affects postpartum neutrophil function. The objectives of the current study were to investigate the effect of 2 precalving body condition scores (BCS; 4 vs...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109588/tea-saponin-reduced-methanogenesis-in-vitro-but-increased-methane-yield-in-lactating-dairy-cows
#17
J Guyader, M Eugène, M Doreau, D P Morgavi, C Gérard, C Martin
The effect of tea saponin supplementation in the ruminant diet on methane emissions, rumen fermentation, and digestive processes is still under debate. The objective of this study was to assess the effect of this plant extract on methanogenesis, total-tract digestibility, and lactating performances of dairy cows. The work included 2 independent and successive experiments. First, the effect of 7 tea saponin doses (from 0 to 0.50 g/L) on methane emissions and protozoa concentrations was tested in 2 repeated in vitro batch culture incubations using bovine rumen contents as inoculum and a cereal mixture as substrate...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109587/effect-of-transitioning-to-automatic-milking-systems-on-producers-perceptions-of-farm-management-and-cow-health-in-the-canadian-dairy-industry
#18
C Tse, H W Barkema, T J DeVries, J Rushen, E A Pajor
Automatic milking systems (AMS), or milking robots, are becoming increasingly common, but there is little documentation of how AMS have affected farms as a whole and what challenges and benefits producers are experiencing during their transition to AMS. The objective of this national survey was to document the effect of transitioning to AMS on producer perceptions of change in housing, farm management, and cow health. In total, 217 AMS producers were surveyed from 8 Canadian provinces. Median time since transition for respondents was 30 mo...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109586/elevation-of-blood-%C3%AE-hydroxybutyrate-concentration-affects-glucose-metabolism-in-dairy-cows-before-and-after-parturition
#19
M Zarrin, L Grossen-Rösti, R M Bruckmaier, J J Gross
Recent studies in mid- and late-lactation dairy cows showed that β-hydroxybutyrate (BHB) infusion had a considerable effect on glucose metabolism and immune response during intramammary lipopolysaccharide challenge. The objective of the present study was to infuse BHB during the dry period and after parturition to investigate the effects of elevated plasma BHB concentrations on metabolism and endocrine changes in transition dairy cows. The hypothesis tested was that regulation of glucose metabolism would change at different physiological stages and an additional elevation of BHB concentration would alter glucose concentration...
January 18, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28109583/detection-of-recombinant-human-lactoferrin-and-lysozyme-produced-in-a-bitransgenic-cow
#20
Germán G Kaiser, Nicolás C Mucci, Vega González, Lourdes Sánchez, José A Parrón, María D Pérez, Miguel Calvo, Juan F Aller, Federico A Hozbor, Adrián A Mutto
Lactoferrin and lysozyme are 2 glycoproteins with great antimicrobial activity, being part of the nonspecific defensive system of human milk, though their use in commercial products is difficult because human milk is a limited source. Therefore, many investigations have been carried out to produce those proteins in biological systems, such as bacteria, yeasts, or plants. Mammals seem to be more suitable as expression systems for human proteins, however, especially for those that are glycosylated. In the present study, a bicistronic commercial vector containing a goat β-casein promoter and an internal ribosome entry site fragment between the human lactoferrin and human lysozyme genes was developed to allow the introduction of both genes into bovine adult fibroblasts in a single transfection...
January 18, 2017: Journal of Dairy Science
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