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Muscle protein intake

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https://www.readbyqxmd.com/read/28106121/endoplasmic-reticulum-oxidative-stress-triggers-tgf-beta-dependent-muscle-dysfunction-by-accelerating-ascorbic-acid-turnover
#1
Diego Pozzer, Mariagrazia Favellato, Marco Bolis, Roberto William Invernizzi, Francesca Solagna, Bert Blaauw, Ester Zito
Endoplasmic reticulum (ER) and oxidative stress are two related phenomena that have important metabolic consequences. As many skeletal muscle diseases are triggered by oxidative stress, we explored the chain of events linking a hyperoxidized ER (which causes ER and oxidative stress) with skeletal muscle dysfunction. An unbiased exon expression array showed that the combined genetic modulation of the two master ER redox proteins, selenoprotein N (SEPN1) and endoplasmic oxidoreductin 1 (ERO1), led to an SEPN1-related myopathic phenotype due to excessive signalling of transforming growth factor (TGF)-beta...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28100702/zanthoxylum-alkylamides-ameliorate-protein-metabolism-disorder-in-stz-induced-diabetic-rats
#2
Tingyuan Ren, Zhu Yu Ping, Xuejuan Xia, Ding Bo Yong, Guo Jing, Kan Jian Quan
This study aimed to evaluate the protein metabolism effect of Zanthoxylum alkylamides and to explore the potential mechanism in streptozotocin (STZ)-induced diabetic rats. Diabetic rats were orally treated with 2, 4 and 8 mg per kg bw of alkylamides daily for 28 days. Alkylamides decreased the relative weight of the liver and food intake, significantly increased the relative skeletal muscle weight and significantly decreased the blood urea nitrogen levels. Insulin, insulin-like growth factor I, total protein (TP) and albumin (ALB), globular proteins and ALB proteins/globulin protein levels in serum significantly increased...
January 18, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28100190/translation-of-a-tailored-nutrition-and-resistance-exercise-intervention-for-elderly-people-to-a-real-life-setting-adaptation-process-and-pilot-study
#3
Ellen Ji van Dongen, Joanne N Leerlooijer, Jan M Steijns, Michael Tieland, Lisette Cpgm de Groot, Annemien Haveman-Nies
BACKGROUND: Combining increased dietary protein intake and resistance exercise training for elderly people is a promising strategy to prevent or counteract the loss of muscle mass and decrease the risk of disabilities. Using findings from controlled interventions in a real-life setting requires adaptations to the intervention and working procedures of healthcare professionals (HCPs). The aim of this study is to adapt an efficacious intervention for elderly people to a real-life setting (phase one) and test the feasibility and potential impact of this prototype intervention in practice in a pilot study (phase two)...
January 18, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28099477/chronic-maternal-low-protein-diet-in-mice-affects-anxiety-night-time-energy-expenditure-and-sleep-patterns-but-not-circadian-rhythm-in-male-offspring
#4
Randy F Crossland, Alfred Balasa, Rajesh Ramakrishnan, Sangeetha K Mahadevan, Marta L Fiorotto, Ignatia B Van den Veyver
Offspring of murine dams chronically fed a protein-restricted diet have an increased risk for metabolic and neurobehavioral disorders. Previously we showed that adult offspring, developmentally exposed to a chronic maternal low-protein (MLP) diet, had lower body and hind-leg muscle weights and decreased liver enzyme serum levels. We conducted energy expenditure, neurobehavioral and circadian rhythm assays in male offspring to examine mechanisms for the body-weight phenotype and assess neurodevelopmental implications of MLP exposure...
2017: PloS One
https://www.readbyqxmd.com/read/28093897/presence-of-early-stage-cancer-does-not-impair-the-early-protein-metabolic-response-to-major-surgery
#5
Mariëlle P K J Engelen, V Suzanne Klimberg, Arianna Allasia, Nicolaas Ep Deutz
BACKGROUND: Combined bilateral mastectomy and reconstruction is a common major surgical procedure in women with breast cancer and in those with a family history of breast cancer. As this large surgical procedure induces muscle protein loss, a preserved anabolic response to nutrition is warranted for optimal recovery. It is unclear whether the presence of early stage cancer negatively affects the protein metabolic response to major surgery as this would mandate perioperative nutritional support...
January 16, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28093090/potential-involvement-of-dietary-advanced-glycation-end-products-in-impairment-of-skeletal-muscle-growth-and-muscle-contractile-function-in-mice
#6
Tatsuro Egawa, Satoshi Tsuda, Ayumi Goto, Yoshitaka Ohno, Shingo Yokoyama, Katsumasa Goto, Tatsuya Hayashi
Diets enriched with advanced glycation end products (AGE) have recently been related to muscle dysfunction processes. However, it remains unclear whether long-term exposure to an AGE-enriched diet impacts physiological characteristics of skeletal muscles. Therefore, we explored the differences in skeletal muscle mass, contractile function and molecular responses between mice receiving a diet high in AGE (H-AGE) and low in AGE (L-AGE) for 16 weeks. There were no significant differences between L-AGE and H-AGE mice with regard to body weight, food intake or epididymal fat pad weight...
January 17, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28088923/an-assessment-of-the-influence-of-macronutrients-on-growth-performance-and-nutrient-utilisation-in-broiler-chickens-by-nutritional-geometry
#7
Sonia Y Liu, Peter H Selle, David Raubenheimer, David J Cadogan, Stephen J Simpson, Aaron J Cowieson
The right-angled triangle mixture experiment was designed to include fourteen diets with different concentrations of starch, protein and lipid. Experimental diets were offered to male Ross 308 broiler chickens from 10 to 23 d after hatching, and response curves and surfaces were generated to illustrate the influence of macronutrients on growth performance and nutrient utilisations. Despite the primary function of macronutrients, especially protein, may not be providing energy, macronutrients were expressed as energy derived from starch, protein and fat for statistical purposes in the mixture design...
December 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/28070459/pre-versus-post-exercise-protein-intake-has-similar-effects-on-muscular-adaptations
#8
Brad Jon Schoenfeld, Alan Aragon, Colin Wilborn, Stacie L Urbina, Sara E Hayward, James Krieger
The purpose of this study was to test the anabolic window theory by investigating muscle strength, hypertrophy, and body composition changes in response to an equal dose of protein consumed either immediately pre- versus post-resistance training (RT) in trained men. Subjects were 21 resistance-trained men (>1 year RT experience) recruited from a university population. After baseline testing, participants were randomly assigned to 1 of 2 experimental groups: a group that consumed a supplement containing 25 g protein and 1 g carbohydrate immediately prior to exercise (PRE-SUPP) (n = 9) or a group that consumed the same supplement immediately post-exercise (POST-SUPP) (n = 12)...
2017: PeerJ
https://www.readbyqxmd.com/read/28063249/effects-of-feeding-frequency-on-meat-quality-traits-and-longissimus-muscle-proteome-in-finishing-pigs
#9
J B Liu, X Cai, H Xiong, H F Zhang
Sixty-four barrows with an initial body weight of 59.8 ± 2.1 kg were allocated to one of the two feeding frequency regimes (had free access to diet and fed two meals per day). Pigs had free access (FA) to feed were fed on an ad libitum basis during the 8-week experimental period. Pigs fed twice daily (M2) were allowed to consume their meals in 2 h. Pigs fed twice daily had lower average daily feed intake (p < 0.01) and average daily gain (p < 0.1), but a greater G:F (p < 0.05) than FA pigs...
January 7, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28053172/protein-synthesis-in-mucin-producing-tissues-is-conserved-when-dietary-threonine-is-limiting-in-piglets
#10
Lalani L Munasinghe, Jason L Robinson, Scott V Harding, Janet A Brunton, Robert F Bertolo
BACKGROUND: The neonatal gastrointestinal tract extracts the majority of dietary threonine on the first pass to maintain synthesis of threonine-rich mucins in mucus. As dietary threonine becomes limiting, this extraction must limit protein synthesis in extraintestinal tissues at the expense of maintaining protein synthesis in mucin-producing tissues. OBJECTIVE: The objective was to determine the dietary threonine concentration at which protein synthesis is reduced in various tissues...
January 4, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28051329/regulation-of-the-cardioprotective-adiponectin-and-its-receptor-adipor1-by-salt
#11
Nicholas Arnold, Abuzar Mahmood, Maya Ramdas, Paul P Ehlinger, Lakshmi Pulakat
Both circulating adiponectin (APN) and cardiac APN exert cardioprotective effects and improve insulin sensitivity and mitochondrial function. Low circulating APN serves as a biomarker for cardiovascular risk. Ablation of adiponectin receptor 1 (AdipoR1) causes myocardial mitochondrial dysfunction. Although high salt intake is a contributor to cardiovascular disease, how it modulates the expression of APN or AdipoR1 in cardiomyocytes is not known. We report that APN mRNA expression was attenuated in a dose-dependent manner in mouse cardiomyocyte cell line HL-1 exposed to salt concentrations ranging from 0...
November 30, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28050927/energy-intake-and-expenditure-of-professional-soccer-players-of-the-english-premier-league-evidence-of-carbohydrate-periodization
#12
Liam Anderson, Patrick Orme, Robert J Naughton, Graeme L Close, Jordan Milsom, David Rydings, Andy O'Boyle, Rocco Di Michele, Julien Louis, Catherine Hambley, John Roger Speakman, Ryland Morgans, Barry Drust, James P Morton
In an attempt to better identify and inform the energy requirements of elite soccer players, we quantified the energy expenditure (EE) of players from the English Premier League (n=6) via the doubly labeled water method (DLW) over a 7-day in-season period. Energy intake (EI) was also assessed using food diaries, supported by the remote food photographic method and 24 h recalls. The 7-day period consisted of 5 training days (TD) and 2 match days (MD). Although mean daily EI (3186 ± 367 kcals) was not different from (P>0...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28050676/nutritional-risk-in-allogeneic-stem-cell-transplantation-rationale-for-a-tailored-nutritional-pathway
#13
Takashi Aoyama, Osamu Imataki, Keita Mori, Kanako Yoshitsugu, Masafumi Fukaya, Ikue Okamura, Terukazu Enami, Raine Tatara, Takashi Ikeda
Hematopoietic stem cell transplantation carries nutrition-related risks. Therefore, nutritional therapy needs to be initiated before transplantation even takes place. We assessed nutritional risk among patients who underwent allogeneic stem cell transplantation. We assessed nutrient supply (calorie supply and protein supply) by chart review. Assessments were made from the pretreatment phase of transplantation to after the end of parenteral nutrition in 51 patients who underwent allogeneic stem cell transplantation at Shizuoka Cancer Center between 2007 and 2012...
January 3, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28045971/anti-diabetic-effects-of-jiang-tang-xiao-ke-granule-via-pi3k-akt-signalling-pathway-in-type-2-diabetes-kkay-mice
#14
Na Yu, Xin Fang, Dandan Zhao, Qianqian Mu, Jiacheng Zuo, Yue Ma, Yi Zhang, Fangfang Mo, Dongwei Zhang, Guangjian Jiang, Rui Wu, Sihua Gao
Jiang Tang Xiao Ke (JTXK) granule, a Chinese herbal formula, has been used clinically to treat type 2 diabetes (T2DM) for decades. Our previous studies showed that JTXK granule exhibited anti-diabetic and anti-oxidative functions in experimental diabetic rats induced by a high fat diet and streptozotocin. However, the underlying mechanisms remain poorly understood. Herein, we aimed to investigate the therapeutic effect of JTXK granule on T2DM KKAy mice and the possible associations with skeletal muscle in the current study...
2017: PloS One
https://www.readbyqxmd.com/read/28032232/effectiveness-of-a-preoperative-exercise-and-nutritional-support-program-for-elderly-sarcopenic-patients-with-gastric-cancer
#15
Kazuyoshi Yamamoto, Yukiko Nagatsuma, Yasunari Fukuda, Motohiro Hirao, Kazuhiro Nishikawa, Atsushi Miyamoto, Masataka Ikeda, Shoji Nakamori, Mitsugu Sekimoto, Kazumasa Fujitani, Toshimasa Tsujinaka
We established a preoperative exercise and nutritional support program for elderly sarcopenic patients with gastric cancer. Twenty-two gastric cancer patients aged 65 years or older with a diagnosis of sarcopenia according to the algorithm proposed by the European Working Group on Sarcopenia in Older People received our preoperative program. The median duration of the program participation was 16 days. Total calorie and protein intakes were significantly higher after the program than before [29.4 ± 6.9 kcal/kg ideal body weight (IBW) vs 27...
December 28, 2016: Gastric Cancer
https://www.readbyqxmd.com/read/28011956/repeated-cures-with-paracetamol-worsen-sarcopenia-in-old-rats-with-suboptimal-food-intake
#16
C Mast, I Savary-Auzeloux, D Remond, C Pouyet, D Centeno, G Voyard, L Combaret, D Dardevet, I Papet
The availability of all amino acids is of prime importance to prevent the ageing-associated decrease in skeletal muscle mass i.e. sarcopenia. Cysteine is the precursor of sulfate and glutathione that are both utilized in the liver to detoxify paracetamol (APAP). Cysteine availability could become limiting under repeated cures with APAP, especially when food intake is suboptimal. The aim of the study was to determine whether repeated cures with APAP could worsen sarcopenia. Twenty-two-month-old male Wistar rats received 3 two-week-long cures of APAP (1% of the diet) intercalated with washout periods of two weeks (APAP group)...
October 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28004777/gene-expression-differences-in-longissimus-muscle-of-nelore-steers-genetically-divergent-for-residual-feed-intake
#17
Polyana C Tizioto, Luiz L Coutinho, Priscila S N Oliveira, Aline S M Cesar, Wellison J S Diniz, Andressa O Lima, Marina I Rocha, Jared E Decker, Robert D Schnabel, Gerson B Mourão, Rymer R Tullio, Adhemar Zerlotini, Jeremy F Taylor, Luciana C A Regitano
Residual feed intake (RFI), a measure of feed efficiency (FE), is defined as the difference between the observed and the predictable feed intake considering size and growth of the animal. It is extremely important to beef production systems due to its impact on the allocation of land areas to alternative agricultural production, animal methane emissions, food demand and cost of production. Global differential gene expression analysis between high and low RFI groups (HRFI and LRFI: less and more efficient, respectively) revealed 73 differentially expressed (DE) annotated genes in Longissimus thoracis (LT) muscle of Nelore steers...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/28002075/what-factors-influence-protein-synthesis-and-degradation-in-critical-illness
#18
Filippo G Di Girolamo, Roberta Situlin, Gianni Biolo
PURPOSE OF REVIEW: The optimal approach to improve protein metabolism in critical illness is not yet fully defined. Here, we have summarized recent literature dealing with the main catabolic and anabolic factors influencing protein kinetics in acute hypercatabolic patients. RECENT FINDINGS: Protein/amino acid intake levels should be adapted to type and severity of illness, keeping in mind that energy overfeeding is associated with poor outcome. A number of anticatabolic nutraceuticals and drugs have been tested in acute patients...
December 20, 2016: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/27999852/effect-of-a-high-protein-energy-restricted-diet-combined-with-resistance-training-on-metabolic-profile-in-older-individuals-with-metabolic-impairments
#19
T Amamou, E Normandin, J Pouliot, I J Dionne, M Brochu, E Riesco
Adequate protein intake and resistance training are effective strategies to maintain muscle mass, but the effect of their combination on metabolic profile during weight loss remains to be determined in older adults. The main objective of this study was to determine the effect of a 16-week high-protein caloric restriction combined with resistance training on chronic disease risk factors in obese older individuals with metabolic impairments. A total of 26 overweight adults aged between 60 and 75 years (BMI 32...
2017: Journal of Nutrition, Health & Aging
https://www.readbyqxmd.com/read/27993175/carbohydrate-intake-and-resistance-based-exercise-are-current-recommendations-reflective-of-actual-need
#20
Kurt A Escobar, Trisha A VanDusseldorp, Chad M Kerksick
Substantial research has been completed examining the impact of carbohydrate (CHO) intake on endurance exercise, whereas its role in resistance-based exercise performance, adaptation and cell signalling has yet to be fully characterised. This empirical shortcoming has precluded the ability to establish specific CHO recommendations for resistance exercise. This results in recommendations largely stemming from findings based on endurance exercise and/or anecdotal evidence despite the distinct energetic demands and molecular responses mediating adaptation from endurance- and resistance-based exercise...
December 2016: British Journal of Nutrition
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