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https://www.readbyqxmd.com/read/28454041/long-term-intake-of-a-high-protein-diet-increases-liver-triacylglycerol-deposition-pathways-and-hepatic-signs-of-injury-in-rats
#1
Rubén Díaz-Rúa, Jaap Keijer, Andreu Palou, Evert M van Schothorst, Paula Oliver
Intake of high-protein (HP) diets has increased over the last years, mainly due to their popularity for body weight control. Liver is the main organ handling ingested macronutrients and it is associated with the beginning of different pathologies. We aimed to deepen our knowledge on molecular pathways affected by long-term intake of an HP diet. We performed a transcriptome analysis on liver of rats chronically fed with a casein-rich HP diet and analyzed molecular parameters related to liver injury. Chronic increase in the dietary protein/carbohydrate ratio up-regulated processes related with amino acid uptake/metabolism and lipid synthesis, promoting a molecular environment indicative of hepatic triacylglycerol (TG) deposition...
April 19, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28446759/transcriptomic-response-of-durum-wheat-to-nitrogen-starvation
#2
Pasquale L Curci, Riccardo Aiese Cigliano, Diana L Zuluaga, Michela Janni, Walter Sanseverino, Gabriella Sonnante
Nitrogen (N) is a key macronutrient representing a limiting factor for plant growth and development and affects productivity in wheat. In this study, durum wheat response to N chronic starvation during grain filling was investigated through a transcriptomic approach in roots, leaves/stems, flag leaf and spikes of cv. Svevo. Nitrogen stress negatively influenced plant height, tillering, flag leaf area, spike and seed traits, and total N content. RNA-seq data revealed 4,626 differentially expressed genes (DEGs)...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28446501/dietary-long-chain-fatty-acids-and-carbohydrate-biomarker-evaluation-in-a-controlled-feeding-study-in-participants-from-the-women-s-health-initiative-cohort
#3
Xiaoling Song, Ying Huang, Marian L Neuhouser, Lesley F Tinker, Mara Z Vitolins, Ross L Prentice, Johanna W Lampe
Background: Biomarkers of macronutrient intake are lacking. Controlled human feeding studies that preserve the normal variation in nutrient and food consumption are necessary for the development and validation of robust nutritional biomarkers.Objective: We aimed to assess the utility of serum phospholipid fatty acids (PLFAs) as biomarkers of dietary intakes of fatty acids, total fat, and carbohydrate.Design: We used an individualized controlled feeding study in which 153 postmenopausal women from the Women's Health Initiative (WHI) were provided with a 2-wk controlled diet that mimicked each individual's habitual food intake...
April 26, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28446382/compensatory-mechanisms-activated-with-intermittent-energy-restriction-a-randomized-control-trial
#4
Sílvia Ribeiro Coutinho, Eline Holli Halset, Sigrid Gåsbakk, Jens F Rehfeld, Bård Kulseng, Helen Truby, Cátia Martins
BACKGROUND & AIMS: Strong compensatory responses, with reduced resting metabolic rate (RMR), increased exercise efficiency (ExEff) and appetite, are activated when weight loss (WL) is achieved with continuous energy restriction (CER), which try to restore energy balance. Intermittent energy restriction (IER), where short spells of energy restriction are interspaced by periods of habitual energy intake, may offer some protection in minimizing those responses. We aimed to compare the effect of IER versus CER on body composition and the compensatory responses induced by WL...
April 7, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28446037/caffeine-coffee-and-appetite-control-a-review
#5
Matthew M Schubert, Christopher Irwin, Rebekah F Seay, Holly E Clarke, Deanne Allegro, Ben Desbrow
Coffee and caffeine consumption has global popularity. However, evidence for the potential of these dietary constituents to influence energy intake, gut physiology, and appetite perceptions remains unclear. The purpose of this review was to examine the evidence regarding coffee and caffeine's influence on energy intake and appetite control. The literature was examined for studies that assessed the effects of caffeine and coffee on energy intake, gastric emptying, appetite-related hormones, and perceptual measures of appetite...
April 27, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28443284/fecal-short-chain-fatty-acid-variations-by-breastfeeding-status-in-infants-at-4%C3%A2-months-differences-in-relative-versus-absolute-concentrations
#6
Sarah L Bridgman, Meghan B Azad, Catherine J Field, Andrea M Haqq, Allan B Becker, Piushkumar J Mandhane, Padmaja Subbarao, Stuart E Turvey, Malcolm R Sears, James A Scott, David S Wishart, Anita L Kozyrskyj
Our gut microbiota provide a number of important functions, one of which is the metabolism of dietary fiber and other macronutrients that are undigested by the host. The main products of this fermentation process are short-chain fatty acids (SCFAs) and other intermediate metabolites including lactate and succinate. Production of these metabolites is dependent on diet and gut microbiota composition. There is increasing evidence for the role of SCFAs in host physiology and metabolic processes as well as chronic inflammatory conditions such as allergic disease and obesity...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28438741/maternal-macronutrient-intake-and-offspring-blood-pressure-20%C3%A2-years-later
#7
Laufey Hrolfsdottir, Thorhallur I Halldorsson, Dorte Rytter, Bodil Hammer Bech, Bryndis E Birgisdottir, Ingibjorg Gunnarsdottir, Charlotta Granström, Tine Brink Henriksen, Sjurdur F Olsen, Ekaterina Maslova
BACKGROUND: Results from 2 cohort studies in Scotland established in the 1940s and 1950s (Aberdeen and Motherwell) suggested that a high protein diet during pregnancy might adversely influence offspring blood pressure at adult age. Our objective was to examine this association in the Danish Fetal Origins Cohort (DaFO88). METHODS AND RESULTS: This was a prospective birth cohort of 965 women who gave birth in 1988-1989 in Aarhus, Denmark, and whose offspring (n=434) participated in a clinical examination ≈20 years later...
April 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28437200/effects-of-dietary-macronutrient-composition-on-fndc5-and-irisin-in-mice-skeletal-muscle
#8
Simone Moreira de Macêdo, Deborah de Farias Lelis, Keila Lopes Mendes, Carlos Alberto de Carvalho Fraga, Igor V Brandi, Jonh David Feltenberger, Lucyana Conceição Farias, André Luiz Sena Guimarães, Alfredo Maurício Batista de Paula, Sérgio Henrique de Sousa Santos
BACKGROUND: Fibronectin type III domain containing 5 (FNDC5) and its protein product Irisin are therapeutic targets for obesity-associated disorders. Irisin plays an important role in energy regulation, inducing browning of white adipocytes, and improving obesity. We aimed to investigate the association between muscle Irisin expression and dietary quality. METHODS: Twenty-eight female mice were divided into four groups and fed the following experimental diets for 60 days: standard diet (SD), high-carbohydrate diet (HCD), high-fat diet (HFD), and high-protein diet (HPD)...
May 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28435067/the-mitogen-activated-protein-kinase-kinase-9-mkk9-modulates-nitrogen-acquisition-and-anthocyanin-accumulation-under-nitrogen-limiting-condition-in-arabidopsis
#9
Juan Luo, Xu Wang, Lei Feng, Yan Li, Jun-Xian He
Nitrogen (N) plays important roles as both a macronutrient and signal in plant growth and development. However, our understanding of N signaling and/or response mechanisms in plants is still limited. Here, we show that the mitogen-activated protein kinase kinase 9 (MKK9) is involved in plant N responses in Arabidopsis by regulating production of anthocyanins and the ability of N acquisition under low N conditions. Transgenic plants that express a constitutively active version of MKK9 (MKK9(DD)) showed decreased accumulation of anthocynanins and reduced expression of key anthocyanin biosynthetic genes under low N condition compared to the plants expressing the inactive form of MKK9 (MKK9(KR))...
April 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28433470/daily-supplementation-of-dietary-protein-improves-the-metabolic-effects-of-glp-1-based-pharmacotherapy-in-lean-and-obese-rats
#10
Elizabeth G Mietlicki-Baase, Kieran Koch-Laskowski, Lauren E McGrath, Joanna Krawczyk, Tram Pham, Rinzin Lhamo, David J Reiner, Matthew R Hayes
Glucagon-like peptide-1 (GLP-1) is an incretin hormone released from intestinal L-cells in response to food entering into the gastrointestinal tract. GLP-1-based pharmaceuticals improve blood glucose regulation and reduce feeding. Specific macronutrients, when ingested, may trigger GLP-1 secretion and enhance the effects of systemic sitagliptin, a pharmacological inhibitor of DPP-IV (an enzyme that rapidly degrades GLP-1). In particular, macronutrient constituents found in dairy foods may act as potent secretagogues for GLP-1, and acute preclinical trials show that ingestion of dairy protein may represent a promising adjunct behavioral therapy in combination with sitagliptin...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28432007/caloric-compensation-in-preschool-children-relationships-with-body-mass-and-differences-by-food-category
#11
S Carnell, L Benson, E L Gibson, L A Mais, S Warkentin
Maintaining a healthy weight may involve compensating for previously consumed calories at subsequent meals. To test whether heavier children demonstrated poorer caloric compensation across a range of conditions, and to explore whether compensation failure was the result of inadequate adjustment of overall intake or specific over-consumption of highly palatable, high energy-density 'junk' foods, we administered two compensation tests to a sample of 4-5 y olds. For Test A, preloads varied only in carbohydrate content and were organoleptically indistinguishable (200 ml orange-flavored beverage [0 kcal vs...
April 18, 2017: Appetite
https://www.readbyqxmd.com/read/28430937/high-sugar-but-not-high-fat-food-activates-supraoptic-oxytocin-neurones-in-the-male-rat
#12
Catherine Hume, Nancy Sabatier, John Menzies
Oxytocin is a potent anorexigen and is believed to have a role in satiety signalling. We developed rat models to study the activity of oxytocin neurones in response to voluntary consumption or oral gavage of foods using c-Fos immunohistochemistry and in vivo electrophysiology.Using c-Fos expression as an indirect marker of neural activation, we showed that the percentage of magnocellular oxytocin neurones expressing c-Fos increased with voluntary consumption of sweetened condensed milk (SCM). To model the effect of food in the stomach, we gavaged anaesthetised rats with SCM...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28429373/dietary-shifts-have-consequences-for-the-repertoire-of-allergens-produced-by-the-european-house-dust-mite
#13
J C Vidal-Quist, F Ortego, S Rombauts, P Castañera, P Hernández-Crespo
Products manufactured from mass-cultured house dust mites, currently commercialized for the diagnosis and immunotherapy of allergy, are heterogeneous in terms of allergen composition and thus present concerns to regulatory authorities. The most abundant species, Dermatophagoides pteronyssinus (Trouessart) (Astigmata: Pyroglyphidae), produces 19 allergenic proteins. Many of these are putatively involved in mite digestive physiology and metabolism. This study aimed to evaluate the effects of mite-rearing media on allergen production...
April 21, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28425978/validation-of-mid-infrared-spectroscopy-for-macronutrient-analysis-of-human-milk
#14
S Parat, S Groh-Wargo, S Merlino, C Wijers, D M Super
OBJECTIVE: Human milk has considerable variation in its composition. Hence, the nutrient profile is only an estimate and can result in under- or over-estimation of the intake of preterm infants. Mid-infrared (MIR) spectroscopy is an evolving technique for analyzing human milk but needs validation before use in clinical practice. STUDY DESIGN: Human milk samples from 35 mothers delivering at 35 weeks to term gestation were analyzed for macronutrients by MIR spectroscopy and by standard laboratory methods using Kjeldahl assay for protein, Mojonnier assay for fat and high-pressure liquid chromatography assay for lactose...
April 20, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28423270/bioaccumulation-and-biodistribution-of-selenium-in-metamorphosing-tadpoles
#15
Chantal M Lanctot, Tom Cresswell, Paul D Callaghan, Steven D Melvin
Selenium is an important macronutrient with a very narrow margin between essentiality and toxicity. Amphibians are hypothesized to be particularly sensitive due to the potential for metamorphosis-driven mobilization, which could transfer or concentrate contaminant burdens within specific organs. We explored the potential role of tissue degeneration and remodeling during anuran metamorphosis as a mechanism for altering tissue-specific Se burdens. Limnodynastes peronii tadpoles were exposed to dissolved (75)Se (as selenite) for 7 days and depurated until completion of metamorphosis...
April 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28421806/diet-and-liver-apoptosis-in-rats-a-particular-metabolic-pathway
#16
Maria Emilia Lopes Monteiro, Analucia Rampazzo Xavier, Vilma Blondet Azeredo
INTRODUCTION: Various studies have indicated an association between modifi cation in dietary macronutrient composition and liver apoptosis. OBJECTIVE: To explain how changes in metabolic pathways associated with a high-protein, high-fat, and low-carbohydrate diet causes liver apoptosis. METHODS: Two groups of rats were compared. An experimental diet group (n = 8) using a high-protein (59.46%), high-fat (31.77%), and low-carbohydrate (8.77%) diet versus a control one (n = 9) with American Institute of Nutrition (AIN)-93-M diet...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421798/assessment-of-individual-carotenoid-and-vitamin-a-dietary-intake-in-overweight-and-obese-dominican-subjects
#17
Madeline Durán-Cabral, Irene Fernández-Jalao, Rocío Estévez-Santiago, Begoña Olmedilla Alonso
INTRODUCTION: Carotenoids are plant pigment with important biological activities in humans, such as provitamin-A among others. At present, there are no individual carotenoid intake data in the Dominican population, which is at risk of vitamin A deficiency and has an important percentage of overweight and obese individuals . OBJECTIVE: To assess the individual components of vitamin A intake (retinol, α-carotene, β-carotene and β-cryptoxanthin) and that of other relevant dietary carotenoids like lutein, zeaxanthin and lycopene of Dominican daily food intake...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421202/the-interaction-between-hiv-and-intestinal-helminth-parasites-coinfection-with-nutrition-among-adults-in-kwazulu-natal-south-africa
#18
B T Mkhize, M Mabaso, T Mamba, C E Napier, Z L Mkhize-Kwitshana
In South Africa few studies have examined the effects of the overlap of HIV and helminth infections on nutritional status. This cross-sectional study investigated the interaction between HIV and intestinal helminths coinfection with nutritional status among KwaZulu-Natal adults. Participants were recruited from a comprehensive primary health care clinic and stratified based on their HIV, stool parasitology, IgE, and IgG4 results into four groups: the uninfected, HIV infected, helminth infected, and HIV-helminth coinfected groups...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28418793/wide-variability-in-caloric-density-of-expressed-human-milk-can-lead-to-major-underestimation-or-overestimation-of-nutrient-content
#19
Charles W Sauer, Mallory A Boutin, Jae H Kim
BACKGROUND: Very-low-birth-weight infants continue to face significant difficulties with postnatal growth. Human milk is the optimal form of nutrition for infants but may exhibit variation in nutrient content. OBJECTIVE: This study aimed to perform macronutrient analysis on expressed human milk from mothers whose babies are hospitalized in the neonatal intensive care unit. METHODS: Up to five human milk samples per participant were analyzed for protein, carbohydrate, and fat content using reference chemical analyses (Kjeldahl for protein, high pressure liquid chromatography for carbohydrates, and Mojonnier for fat)...
May 2017: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/28414060/dietary-protein-content-alters-both-male-and-female-contributions-to-drosophila-melanogaster-female-post-mating-response-traits
#20
Janna N Schultzhaus, Ginger E Carney
Males transfer sperm, proteins and other molecules to females during mating. In Drosophila melanogaster, these molecules contribute to the induction of egg maturation, ovulation, oviposition, sperm storage and changes in female receptivity. This suite of physiological and behavioral changes is referred to as the female post-mating response (PMR). Protein is a necessary macronutrient for both male and female reproduction, but imbalances in protein content can decrease reproductive potential. Dietary protein affects the production of proteins in the male ejaculate that are important for induction of the PMR, and female fecundity increases with dietary protein while lifetime mating rate decreases...
April 14, 2017: Journal of Insect Physiology
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