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Nutrient absorption

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https://www.readbyqxmd.com/read/29779496/invited-review-improving-feed-efficiency-of-beef-cattle-the-current-state-of-the-art-and-future-challenges
#1
D A Kenny, C Fitzsimons, S M Waters, M McGee
Improvements in feed efficiency of beef cattle have the potential to increase producer profitability and simultaneously lower the environmental footprint of beef production. Although there are many different approaches to measuring feed efficiency, residual feed intake (RFI) has increasingly become the measure of choice. Defined as the difference between an animal's actual and predicted feed intake (based on weight and growth), RFI is conceptually independent of growth and body size. In addition, other measurable traits related to energy expenditure such as estimates of body composition can be included in the calculation of RFI to also force independence from these traits...
May 21, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29777169/difructose-dianhydride-improves-intestinal-calcium-absorption-wound-healing-and-barrier-function
#2
Sang In Lee, In Ho Kim
The gastrointestinal tract (GIT) is critical for nutrient absorption and is an important barrier against harmful pathogens and antigens. Difructose anhydrides (DFA)-IVs are nondigestible disaccharides that enhance calcium and iron absorption by affecting the intestinal epithelial tissue. However, their effects on intestinal functions are not fully understood. In this study, we performed a feeding trial and found that dietary DFA-IVs improved growth performance, relative breast muscle and liver weight, and digestibility and blood calcium and iron concentrations in broilers...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776493/mechanisms-in-bariatric-surgery-gut-hormones-diabetes-resolution-and-weight-loss
#3
Jens Juul Holst, Sten Madsbad, Kirstine N Bojsen-Møller, Maria Saur Svane, Nils Bruun Jørgensen, Carsten Dirksen, Christoffer Martinussen
Gastric bypass surgery leads to profound changes in the secretion of gut hormones with effects on metabolism, appetite, and food intake. Here, we discuss their contributions to the improvement in glucose tolerance and the weight loss that results from the operations. We find that the improved glucose tolerance is due the following events: a negative energy balance and resulting weight loss, which improve first hepatic and later peripheral insulin sensitivity, in combination with increased postprandial insulin secretion elicited particularly by exaggerated glucagon-like peptide-1 responses...
May 2018: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29773170/iron-and-innate-antimicrobial-immunity-depriving-the-pathogen-defending-the-host
#4
REVIEW
Manfred Nairz, Stefanie Dichtl, Andrea Schroll, David Haschka, Piotr Tymoszuk, Igor Theurl, Günter Weiss
The acute-phase response is triggered by the presence of infectious agents and danger signals which indicate hazards for the integrity of the mammalian body. One central feature of this response is the sequestration of iron into storage compartments including macrophages. This limits the availability of this essential nutrient for circulating pathogens, a host defence strategy known as 'nutritional immunity'. Iron metabolism and the immune response are intimately linked. In infections, the availability of iron affects both the efficacy of antimicrobial immune pathways and pathogen proliferation...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29768699/near-infrared-spectrometry-allows-fast-and-extensive-predictions-of-functional-traits-from-dry-leaves-and-branches
#5
Flávia R C Costa, Carla Lang, Danilo R A Almeida, Carolina V Castilho, Lourens Poorter
The linking of individual functional traits to ecosystem processes is the basis for making generalizations in ecology, but the measurement of individual values is laborious and time consuming, preventing large-scale trait mapping. Also, in hyper-diverse systems, errors occur because identification is difficult, and species level values ignore intra-specific variation. To allow extensive trait mapping at the individual level, we evaluated the potential of Fourrier-Transformed Near Infra-Red Spectrometry (FT-NIR) to adequately describe 14 traits that are key for plant carbon, water, and nutrient balance...
May 16, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29764197/re-thinking-the-chicken-campylobacter-jejuni-interaction-a-review
#6
Wageha A Awad, Claudia Hess, Michael Hess
Chickens are recognized as an imperative source of thermophilic Campylobacter spp., carrying this microorganism in high numbers in their intestinal tract. For long time, C. jejuni has been considered as a commensal microorganism which colonizes its primary host rather than infecting it, in the absence of any obvious clinical signs. However, recent studies question this and argue for a deeper understanding of the host-bacteria interaction. Following oral uptake it was demonstrated that C. jejuni interacts intimately with the gut epithelium and influences cellular functions of the host, with consequences on nutrient absorption...
May 15, 2018: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/29762367/the-history-of-maltose-active-disaccharidases
#7
Michael J Lentze
The history of maltose-active disaccharidases is closely related to the history of the sugar and starch industry. It began in the 19th century, when a shortage of cane sugar occurred in continental Europe, because Napoleon Bonaparte decreed that no goods could be imported from England to the countries he occupied. Other sugar sources had to be found, and it led to the identification of sugar beets as alternative source of sugar by Marggraf in 1774, to the detection of starch hydrolysis by diluted sulfuric acid by Kirchhoff in 1812, and to the starch digestion enzyme, α-amylase, by Payen in 1833...
June 2018: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/29756574/dietary-protein-and-gut-microbiome-composition-and-function
#8
Jianfei Zhao, Xiaoya Zhang, Hongbin Liu, Michael A Brown, Shiyan Qiao
Dietary protein and its metabolites, amino acids are essential nutrients for human and animals. Accumulated researches revealed that the gut microbiota mediate the crosstalk between protein metabolism and host immune response. Gut microbes are involved in the digestion, absorption, metabolism and transformation process of dietary protein in the gastrointestinal tract. Amino acids can be metabolized into numerous microbial metabolites, and these metabolites participate in various physiological functions related to host health and diseases...
May 14, 2018: Current Protein & Peptide Science
https://www.readbyqxmd.com/read/29745166/-seasonal-changes-of-optical-absorption-properties-of-river-and-lake-in-east-liaohe-river-basin-northeast-china
#9
Yan Yan Song, Dong Hui Su, Tian Tian Shao
The absorption characteristics of optically active constituents (OACs) in water column are important optical properties and basic parameters of establishing the inverse analysis model. Comparative analyses about seasonal variability of the optical absorption characteristics (phytoplankton, non-algal particles and chromophoric dissolved organic matter absorption characteristics) and water quality status of East Liaohe River basin were conducted based on the water samples in Erlong-hu Reservoir collected in June, September and October of 2011 and samples in East Liaohe River in October of 2012...
June 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29742015/genetically-induced-microtubule-disruption-in-the-mouse-intestine-impairs-intracellular-organization-and-transport
#10
Andrew Muroyama, Michael Terwilliger, Bushu Dong, Harrison Suh, Terry Lechler
In most differentiated cells, microtubules reorganize into non-centrosomal arrays that are cell-type specific. In the columnar absorptive enterocytes of the intestine, microtubules form polarized apical-basal arrays that have been proposed to play multiple roles. However, in vivo testing of these hypotheses has been hampered by a lack of genetic tools to specifically perturb microtubules. Here, we analyze mice in which microtubules are disrupted by conditional inducible expression of the microtubule-severing protein spastin...
May 9, 2018: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/29735027/intestinal-failure-and-rehabilitation
#11
REVIEW
Alan L Buchman
The rendering of proper care for the patient with intestinal failure requires the provider to have a functional understanding of digestion and absorption, nutrient requirements, and intestinal adaptation. Inherent in those concepts is that not only is nutritional absorption compromised, but medication absorption is as well. The principles of the management of home parenteral nutrition must be mastered and then proper and controlled weaning of parenteral nutrition may be commenced by use of dietary and pharmacologic means with appropriate clinical outcome measures followed...
June 2018: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/29734711/the-role-of-lipids-in-human-milk-and-infant-formulae
#12
Alessandra Mazzocchi, Veronica D'Oria, Valentina De Cosmi, Silvia Bettocchi, Gregorio Paolo Milani, Marco Silano, Carlo Agostoni
The quantity and quality of dietary lipids in infant formulae have a significant impact on health outcomes, especially when fat storing and/or absorption are limited (e.g., preterm birth and short bowel disease) or when fat byproducts may help to prevent some pathologies (e.g., atopy). The lipid composition of infant formulae varies according to the different fat sources used, and the potential biological effects are related to the variety of saturated and unsaturated fatty acids. For example, since lipids are the main source of energy when the normal absorptive capacity of the digestive tract is compromised, medium-chain saturated fatty acids might cover this requirement...
May 4, 2018: Nutrients
https://www.readbyqxmd.com/read/29732532/pathogenesis-diagnosis-and-treatment-of-anaemia-in-immune-mediated-gastrointestinal-disorders
#13
REVIEW
Gaetano Bergamaschi, Antonio Di Sabatino, Gino R Corazza
Immune-mediated disorders affecting the gastrointestinal (GI) tract may compromise GI integrity, interfere with the absorption of nutrients and cause bleeding and inflammation. All these features contribute to the pathogenesis of anaemia, the most prevalent extra-intestinal manifestation of immune-mediated GI disorders. Anaemia is most commonly due to iron deficiency and/or inflammation, but vitamin deficiencies and, more infrequently, autoimmune haemolysis or drug-induced myelosuppression can be involved. Here we address several issues related to the differential diagnosis and treatment of anaemia in immune-mediated GI disorders, giving particular relevance to the problem of iron deficiency anaemia associated with inflammation...
May 6, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29722842/a-dynamic-model-for-predicting-growth-in-zinc-deficient-stunted-infants-given-supplemental-zinc
#14
Meryl E Wastney, Christine M McDonald, Janet C King
Background: Zinc deficiency limits infant growth and increases susceptibility to infections, which further compromises growth. Zinc supplementation improves the growth of zinc-deficient stunted infants, but the amount, frequency, and duration of zinc supplementation required to restore growth in an individual child is unknown. A dynamic model of zinc metabolism that predicts changes in weight and length of zinc-deficient, stunted infants with dietary zinc would be useful to define effective zinc supplementation regimens...
May 1, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29722232/-effects-of-exogenous-spermidine-and-arbuscular-mycorrhizal-fungi-on-plant-growth-of-cucumber
#15
Ya Sheng Wu, Shi Rong Guo, Jie Zhang, Nan Shan Du, Jin Sun
Effects of spermidine (Spd) and arbuscular mycorrhizal fungi (AMF) on the growth and photosynthesis of cucumber (Cucumis sativus L., cv. Jinchun 2) seedlings, fruit yield and quality, microorganism and enzymatic activity in rhizosphere were investigated. The results showed that combined Spd and AMF addition significantly promoted the growth of cucumber seedlings, increased the root activity, fruit production and quality, enhanced nutrients absorption of seedlings. Net photosynthetic rate, actual photochemical efficiency, light quantum efficiency, carboxylation efficiency and light respiration rate of cucumber seedlings were increased by combined addition of Spd and AMF...
March 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29719936/induced-ptf1a-expression-in-pancreatic-ductal-adenocarcinoma-cellsactivates-acinar-gene-networks-reduces-tumorigenic-properties-and-sensitizes-cells-to-gemcitabine-treatment
#16
Brad L Jakubison, Patrick G Schweickert, Sarah E Moser, Yi Yang, Hongyu Gao, Kathleen Scully, Pamela Itkin-Ansari, Yunlong Liu, Stephen F Konieczny
Pancreatic acinar cells synthesize, package, and secrete digestive enzymes into the duodenum to aid in nutrient absorption and meet metabolic demands. When exposed to cellular stresses and insults acinar cells undergo a dedifferentiation process termed acinar-ductal metaplasia (ADM). ADM lesions with oncogenic mutations eventually give rise to pancreatic ductal adenocarcinoma (PDAC). In healthy pancreata, the basic helix-loop-helix (bHLH) factors MIST1 and PTF1a coordinate an acinar-specific transcription network that maintains the highly developed differentiation status of the cells, protecting the pancreas from undergoing a transformative process...
May 2, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29716880/report-an-ex-vivo-up-take-of-levamisole-molecules-by-cestode-monezia-expensa-of-goat-capra-hirsa-and-its-detection-through-rp-hplc
#17
Muhammad Mazhar Ayaz, Muhammad Sajid, Sanjota Nirmal Das, Muhammad Hanif
Detection of various molecules of drugs remained a prime issue especially in tissues of animals, humans and in their target parasites. The cestode/tapeworms pose a dilemma because of their weird body composition and uptake pattern of nutrients and medicines especially through absorption by tegument. We selected levamisole; thought to be potent antiparasitic/ani-cestodal drug. The uptake of levamisole (LEV) through cestodeal tissues is studied through HPCL in this paper. High performance liquid chromatography technique has been utilized to know the uptake of levamisole in tissues of cestodes of Goat (Monezia expensa) in small ruminants...
May 2018: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29712884/imbalance-of-gut-microbiome-and-intestinal-epithelial-barrier-dysfunction-in-cardiovascular-disease
#18
Judith N Lezutekong, Anish Nikhanj, Gavin Y Oudit
The main function of the intestinal barrier is to regulate the absorption of nutrients, electrolytes, and water from the lumen into circulation and to prevent the entry of pathogenic microorganisms and toxic luminal substances. To maintain this function, an ideal microbiota balance is required and gut microbiota are critical for the intestinal epithelial barrier dysfunction and for the maintenance of physiological homeostasis. There is a demonstrable link between dysbiosis and intestinal dysfunction and diseases such as diabetes, obesity, and cardiovascular disease...
April 30, 2018: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29709887/association-between-serum-folate-levels-and-caffeinated-beverage-consumption-in-pregnant-women-in-chiba-the-japan-environment-and-children-s-study
#19
Masae Otake, Kenichi Sakurai, Masahiro Watanabe, Chisato Mori
BACKGROUND: Several studies have reported the adverse effects of caffeine intake during pregnancy on fetal health. However, the effects of caffeine intake from green and oolong teas has not been investigated, despite the considerable consumption of these teas in Japan and the potential inhibitory effects of catechins-chemicals present at relatively high levels in green and oolong teas-on folic acid absorption. The potential associations of serum folate levels with caffeinated beverage consumption and catechin levels remain largely unstudied...
April 28, 2018: Journal of Epidemiology
https://www.readbyqxmd.com/read/29707715/effects-of-bovine-lactoferrin-on-l-dopa-absorption-and-metabolism-in-mice
#20
Masayuki Ikeda, Hiroshi Iijima, Ichizo Shinoda, Hiroshi Iwamoto, Yasuhiro Takeda
Bioactive natural products, habitually ingested with milk or its derivative nutrients, have been studied for their bioavailability. In this study, we investigated the effects of the co-administration of bovine milk-derived lactoferrin (bLF) and bioactive products, with a focus on catechol-O-methyltransferase (COMT), an enzyme in the catechol metabolism. bLF showed inhibitory activity on COMT in vitro, and acidic pretreatment of bLF enhanced its inhibitory activity. Moreover, partially digested products of bLF by pepsin retained inhibitory activity...
April 30, 2018: Food & Function
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