keyword
MENU ▼
Read by QxMD icon Read
search

Nutrients

keyword
https://www.readbyqxmd.com/read/29232262/intermittent-versus-continuous-feeding-in-critically-ill-adults
#1
Jayshil J Patel, Martin D Rosenthal, Daren K Heyland
PURPOSE OF REVIEW: Early enteral nutrition is recommended in critically ill adult patients. The optimal method of administering enteral nutrition remains unknown. Continuous enteral nutrition administration in critically ill patients remains the most common practice worldwide; however, its practice has recently been called into question in favor of intermittent enteral nutrition administration, where volume is infused multiple times per day. This review will outline the key differences between continuous and intermittent enteral nutrition, describe the metabolic responses to continuous and intermittent enteral nutrition administration and outline recent studies comparing continuous with intermittent enteral nutrition administration on outcomes in critically ill adults...
December 11, 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29232127/measurement-of-fructose-asparagine-concentrations-in-human-and-animal-foods
#2
Jikang Wu, Anice Sabag-Daigle, Thomas O Metz, Brooke Deatherage Kaiser, Venkat Gopalan, Edward J Behrman, Vicki H Wysocki, Brian Ahmer
The food-borne bacterial pathogen, Salmonella enterica, can utilize fructose-asparagine (F-Asn) as the sole carbon and nitrogen source. F-Asn is the product of an Amadori rearrangement following the non-enzymatic condensation of glucose and asparagine. Heating converts F-Asn via complex Maillard reactions to a variety of molecules that contribute to the color, taste, and aroma of heated foods. Among these end derivatives is acrylamide, which is present in some foods, especially in fried potatoes. The F-Asn utilization pathway in Salmonella, specifically FraB, is a potential drug target because inhibition of this enzyme would lead to intoxication of Salmonella in the presence of F-Asn...
December 12, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29231874/the-role-of-aquaporins-in-ocular-lens-homeostasis
#3
REVIEW
Kevin L Schey, Rosica S Petrova, Romell B Gletten, Paul J Donaldson
Abstract: Aquaporins (AQPs), by playing essential roles in the maintenance of ocular lens homeostasis, contribute to the establishment and maintenance of the overall optical properties of the lens over many decades of life. Three aquaporins, AQP0, AQP1 and AQP5, each with distinctly different functional properties, are abundantly and differentially expressed in the different regions of the ocular lens. Furthermore, the diversity of AQP functionality is increased in the absence of protein turnover by age-related modifications to lens AQPs that are proposed to alter AQP function in the different regions of the lens...
December 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29231275/effects-of-limit-feeding-diets-with-different-forage-to-concentrate-ratios-on-nutrient-intake-rumination-ruminal-fermentation-digestibility-blood-parameters-and-growth-in-holstein-heifers
#4
Jun Zhang, Haitao Shi, Yajing Wang, Shengli Li, Hongtao Zhang, Zhijun Cao, Kailun Yang
The objective of this study was using a wide range of dietary concentrate levels to investigate the major effects of limit-feeding on heifers. Twenty-four Holstein heifers were blocked into six groups and fed with one of four diets containing different levels of concentrate (20%, 40%, 60% and 80% on a dry matter (DM) basis) but with same intakes of metabolizable energy for 28 days. Increasing levels of dietary concentrate caused decreased (P ≤ 0.02) intakes of dry matter (DMI) and neutral detergent fiber and total rumination time, but increased (P < 0...
December 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29231169/an-evolutionary-young-defense-metabolite-influences-the-root-growth-of-plants-via-the-ancient-tor-signaling-pathway
#5
Frederikke Gro Malinovsky, Marie-Louise F Thomsen, Sebastian J Nintemann, Lea Møller Jagd, Baptiste Bourgine, Meike Burow, Daniel J Kliebenstein
To optimize fitness a plant should monitor its metabolism to appropriately control growth and defense. Primary metabolism can be measured by the universally conserved TOR (Target of Rapamycin) pathway to balance growth and development with the available energy and nutrients. Recent work suggests that plants may measure defense metabolites to potentially provide a strategy ensuring fast reallocation of resources to coordinate plant growth and defense. There is little understanding of mechanisms enabling defense metabolite signaling...
December 12, 2017: ELife
https://www.readbyqxmd.com/read/29230904/impacts-of-climate-change-on-rice-production-in-africa-and-causes-of-simulated-yield-changes
#6
Pepijn A J van Oort, Sander J Zwart
This study is the first of its kind to quantify possible effects of climate change on rice production in Africa. We simulated impacts on rice in irrigated systems (dry season and wet season) and rainfed systems (upland and lowland). We simulated the use of rice varieties with a higher temperature sum as adaptation option. We simulated rice yields for 4 RCP climate change scenarios and identified causes of yield declines. Without adaptation, shortening of the growing period due to higher temperatures had a negative impact on yields (-24% in RCP 8...
December 12, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29230652/response-of-energy-microalgae-chlamydomonas-reinhardtii-to-nitrogen-and-phosphorus-stress
#7
Yizheng Wang, Jiang Yu, Ping Wang, Siwei Deng, Jiahua Chang, Zongxin Ran
Microalgae can effectively absorb nitrogen (N) and phosphorus (P) in wastewater, while growth characteristics can be affected by such nutrients. The influences of the N and P concentration on growth, biomass yield, protein yield, and cell ultrastructure of Chlamydomonas reinhardtii (C. reinhardtii) were investigated in this study. The results showed that, in the optimum conditions (24-72 mg/L for N and 4.5-13.5 mg/L for P), the final biomass and protein content of C. reinhardtii could reach maximum value, and the cell organelles (chloroplast, mitochondria,etc...
December 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29230650/available-forms-of-nutrients-and-heavy-metals-control-the-distribution-of-microbial-phospholipid-fatty-acids-in-sediments-of-the-three-gorges-reservoir-china
#8
Hongyang Sun, Yanhong Wu, Haijian Bing, Jun Zhou, Na Li
The construction of the Three Gorges Reservoir (TGR) as well as the development of local industry and agriculture not only had tremendous impacts on the environment but also affected human health. Although water, soil, and air in the TGR have been well studied for environmental risk assessment, very little information is available on benthic sediments and microorganisms. In this study, sedimentary samples were collected along the main stream of the TGR to examine microbial phospholipid fatty acids (PLFA) and relevant variables (e...
December 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29230627/effect-of-pollen-extract-supplementation-on-the-varroatosis-tolerance-of-honey-bee-apis-mellifera-larvae-reared-in-vitro
#9
Vincent Piou, Jérémy Tabart, Jean-Louis Hemptinne, Angélique Vétillard
As the main source of lipids and proteins in honey bees, pollen is a major nutrient provider involved in development and health and has been studied for tolerance stimulation against pathogens and parasites. In the case of Varroa destructor Anderson & Trueman (Acari, Mesostigmata: Varroidae) parasitization, the lack of a complete laboratory system to rear both the bee larva and the acarian parasite limited the studies concerning larval nutrition effects on the bee tolerance and resistance against varroatosis...
December 11, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/29230384/non-canonical-mechanisms-regulating-hypoxia-inducible-factor-1-alpha-in-cancer
#10
REVIEW
Luisa Iommarini, Anna Maria Porcelli, Giuseppe Gasparre, Ivana Kurelac
Hypoxia-inducible factor 1 alpha (HIF-1α) orchestrates cellular adaptation to low oxygen and nutrient-deprived environment and drives progression to malignancy in human solid cancers. Its canonical regulation involves prolyl hydroxylases (PHDs), which in normoxia induce degradation, whereas in hypoxia allow stabilization of HIF-1α. However, in certain circumstances, HIF-1α regulation goes beyond the actual external oxygen levels and involves PHD-independent mechanisms. Here, we gather and discuss the evidence on the non-canonical HIF-1α regulation, focusing in particular on the consequences of mitochondrial respiratory complexes damage on stabilization of this pleiotropic transcription factor...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/29230378/species-diversity-and-drivers-of-arbuscular-mycorrhizal-fungal-communities-in-a-semi-arid-mountain-in-china
#11
He Zhao, Xuanzhen Li, Zhiming Zhang, Yong Zhao, Jiantao Yang, Yiwei Zhu
Arbuscular mycorrhizal fungi (AMF) play an essential role in complex ecosystems. However, the species diversity and composition of AMF communities remain unclear in semi-arid mountains. Further, it is not well understood if the characteristics of AMF community assemblies differ for different habitat types, e.g., agricultural arable land, artificial forest land, natural grassland, and bush/wood land. Here, using the high-throughput technology by Illumina sequencing on the MiSeq platform, we explored the species diversity and composition of soil AMF communities among different habitat types in a semi-arid mountain (Taihang Mountain, Mid-western region of China)...
2017: PeerJ
https://www.readbyqxmd.com/read/29230345/new-trends-for-the-evaluation-of-heat-treatments-of-milk
#12
REVIEW
Mena Ritota, Maria Gabriella Di Costanzo, Maria Mattera, Pamela Manzi
Milk is generally very rich in nutrients and this may lead it to be an ideal growth environment for many microorganisms, including pathogens, so effective measurements aiming to ensure total microbiological safety of milk and minimize the risk to human health are needed. Milk heat treatments are the most common practices carried out to inhibit the microbial growth; therefore it is necessary to have analytical procedures that are more and more up-to-date and capable of detecting the effectiveness of the heat treatments...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/29230230/comparative-performance-of-ground-vs-aerially-assessed-rgb-and-multispectral-indices-for-early-growth-evaluation-of-maize-performance-under-phosphorus-fertilization
#13
Adrian Gracia-Romero, Shawn C Kefauver, Omar Vergara-Díaz, Mainassara A Zaman-Allah, Boddupalli M Prasanna, Jill E Cairns, José L Araus
Low soil fertility is one of the factors most limiting agricultural production, with phosphorus deficiency being among the main factors, particularly in developing countries. To deal with such environmental constraints, remote sensing measurements can be used to rapidly assess crop performance and to phenotype a large number of plots in a rapid and cost-effective way. We evaluated the performance of a set of remote sensing indices derived from Red-Green-Blue (RGB) images and multispectral (visible and infrared) data as phenotypic traits and crop monitoring tools for early assessment of maize performance under phosphorus fertilization...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29230210/checkpoint-blockade-toxicity-and-immune-homeostasis-in-the-gastrointestinal-tract
#14
REVIEW
Michael Dougan
Monoclonal antibodies targeting the regulatory immune "checkpoint" receptors CTLA-4, PD-1, and PD-L1 are now standard therapy for diverse malignancies including melanoma, lung cancer, and renal cell carcinoma. Although effective in many patients and able to induce cures in some, targeting these regulatory pathways has led to a new class of immune-related adverse events. In many respects, these immune toxicities resemble idiopathic autoimmune diseases, such as inflammatory bowel disease, autoimmune hepatitis, rheumatoid arthritis, and vitiligo...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29230201/differential-metabolism-of-a-two-carbon-substrate-by-members-of-the-paracoccidioides-genus
#15
Lilian C Baeza, Fabiana R da Mata, Laurine L Pigosso, Maristela Pereira, Gustavo H M F de Souza, Alexandre S G Coelho, Célia M de Almeida Soares
The genus Paracoccidioides comprises known fungal pathogens of humans and can be isolated from different infection sites. Metabolic peculiarities in different members of the Paracoccidioides led us to perform proteomic studies in the presence of the two-carbon molecule acetate, which predominates in the nutrient-poor environment of the phagosome. To investigate the expression rates of proteins of different members of Paracoccidioides, including one isolate of P. lutzii (Pb01) and three isolates of P. brasiliensis (Pb03, Pb339, and PbEPM83), using sodium acetate as a carbon source, proteins were quantified using label-free and data-independent liquid chromatography-mass spectrometry...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29230200/from-genes-to-ecosystems-in-microbiology-modeling-approaches-and-the-importance-of-individuality
#16
REVIEW
Jan-Ulrich Kreft, Caroline M Plugge, Clara Prats, Johan H J Leveau, Weiwen Zhang, Ferdi L Hellweger
Models are important tools in microbial ecology. They can be used to advance understanding by helping to interpret observations and test hypotheses, and to predict the effects of ecosystem management actions or a different climate. Over the past decades, biological knowledge and ecosystem observations have advanced to the molecular and in particular gene level. However, microbial ecology models have changed less and a current challenge is to make them utilize the knowledge and observations at the genetic level...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29230199/resource-legacies-of-organic-and-conventional-management-differentiate-soil-microbial-carbon-use
#17
Melissa M Arcand, David J Levy-Booth, Bobbi L Helgason
Long-term contrasts in agricultural management can shift soil resource availability with potential consequences to microbial carbon (C) use efficiency (CUE) and the fate of C in soils. Isothermal calorimetry was combined with 13C-labeled glucose stable isotope probing (SIP) of 16S rRNA genes to test the hypothesis that organically managed soils would support microbial communities with greater thermodynamic efficiency compared to conventional soils due to a legacy of lower resource availability and a resultant shift toward communities supportive of more oligotrophic taxa...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29230179/transplacental-nutrient-transport-mechanisms-of-intrauterine-growth-restriction-in-rodent-models-and-humans
#18
REVIEW
Elke Winterhager, Alexandra Gellhaus
Although the causes of intrauterine growth restriction (IUGR) have been intensively investigated, important information is still lacking about the role of the placenta as a link from adverse maternal environment to adverse pregnancy outcomes of IUGR and preterm birth. IUGR is associated with an increased risk of cardiovascular, metabolic, and neurological diseases later in life. Determination of the most important pathways that regulate transplacental transport systems is necessary for identifying marker genes as diagnostic tools and for developing drugs that target the molecular pathways...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29230079/development-of-a-food-composition-database-to-monitor-changes-in-packaged-foods-and-beverages
#19
Jennifer M Poti, Emily Yoon, Bridget Hollingsworth, Jessica Ostrowski, Julie Wandell, Donna R Miles, Barry M Popkin
In order to monitor nutritional changes in the US food supply and assess potential impact on individual dietary intake, an approach was developed to enhance existing standard food composition tables with time-varying product- and brand-specific information for barcoded packaged foods. A "Crosswalk" was formed between barcoded products and USDA foodcodes in a time-specific manner, such that sales-weighted average nutritional profiles were generated for each foodcode based on corresponding products (275,000 to 350,000 per 2-year cycle)...
December 2017: Journal of Food Composition and Analysis
https://www.readbyqxmd.com/read/29230041/efficient-dissolved-organic-carbon-production-and-export-in-the-oligotrophic-ocean
#20
Saeed Roshan, Timothy DeVries
Biologically fixed carbon is transferred from the surface to deep ocean as sinking particles or dissolved organic carbon (DOC). DOC is estimated to account for ~20% of global export production, but the degree to which this varies regionally has not been assessed at a global scale. Here we present the first observationally based global-scale assessment of DOC production and export, obtained by combining an artificial neural network estimate of the global DOC distribution, and a data-constrained ocean circulation model...
December 11, 2017: Nature Communications
keyword
keyword
79879
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"