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Amino acid supplementation

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https://www.readbyqxmd.com/read/28529738/therapeutic-benefits-of-glutamine-an-umbrella-review-of-meta-analyses
#1
Marc P McRae
Glutamine may be an essential amino acid in patients with catabolic disease, as it has been demonstrated that circulating glutamine levels drop during critical illness and following major surgery; this may result in an increase in secondary infection risk, recovery time and mortality rates. However, there is much discrepancy in the literature with regards to randomized controlled studies, and therefore, the present study is an umbrella review of published meta-analyses, conducted to examine the effectiveness of glutamine's role as a therapeutic agent...
May 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28529155/metabolic-insights-into-the-cold-survival-strategy-and-overwintering-of-the-common-cutworm-spodoptera-litura-fabricius-lepidoptera-noctuidae
#2
Wei Zhu, Huan Zhang, Qian Meng, Menglong Wang, Guiling Zhou, Xuan Li, Hongtuo Wang, Lin Miao, Qilian Qin, Jihong Zhang
The common cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae), is a destructive pest in Asia. Although overwintering in the field has not been reported for this species, their larvae are capable of long-term survival in fluctuating temperatures, i.e., 5°C (12 h) plus 13°C (12 h), if food is available. With an increase in climate change due to global warming and the widespread use of greenhouses, further understanding of their cold survival strategy is needed to predict and control their population in the future...
May 18, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28528581/organic-zinc-absorption-by-the-intestine-of-broilers-in-vivo
#3
Yu Yu, Lin Lu, Su-Fen Li, Li-Yang Zhang, Xu-Gang Luo
In Expt 1, a Zn-unsupplemented basal diet (control) and the basal diet supplemented with one of four different Zn sources, including ZnSO4, Zn-amino acid chelate with a weak chelation strength (Zn-AA W), Zn-protein chelate with a moderate chelation strength (Zn-Pro M) and Zn-protein chelate with a strong chelation strength (Zn-Pro S) were fed to broiler chickens from days 14 to 28. On day 28, Zn content in plasma from the hepatic portal vein increased (P0·05) and Zn-AA W(P<0·04) were higher than those for ZnSO4...
May 22, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28527336/title-potassium-application-regulates-nitrogen-metabolism-and-osmotic-adjustment-in-cotton-gossypium-hirsutum-l-functional-leaf-under-drought-stress
#4
Rizwan Zahoor, Wenqing Zhao, Muhammad Abid, Haoran Dong, Zhiguo Zhou
To evaluate the role of potassium (K) in maintaining nitrogen metabolism and osmotic adjustment development of cotton functional leaves to sustain growth under soil drought and rewatering conditions, the plants of two cotton cultivars Siza 3 (low-K sensitive) and Simian 3 (low-K tolerant), were grown under three different K rates (K0, K1, and K2; 0, 150, and 300kgK2Oha(-1), respectively) and exposed to drought stress with 40±5% soil relative water content (SRWC). The drought stress was applied at flowering stage by withholding water for eight days followed by rewatering to a well-watered level (75±5% SRWC)...
May 4, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28526785/effects-of-arginine-on-growth-virulence-gene-expression-and-stress-tolerance-by-streptococcus-mutans
#5
Brinta Chakraborty, Robert A Burne
Streptococcus mutans is a common constituent of oral biofilms and a primary etiologic agent of human dental caries. The bacteria associated with dental caries have a potent ability to produce organic acids from dietary carbohydrates and to grow and metabolize in acidic conditions. In contrast, many commensal bacteria produce ammonia through the arginine deiminase system (ADS), which moderates the pH of oral biofilms. Arginine metabolism by the ADS is a significant deterrent to the initiation and progression of dental caries...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28521062/relative-metabolizable-energy-values-for-fats-and-oils-in-young-broilers-and-adult-roosters
#6
M P Aardsma, R D Mitchell, C M Parsons
Our goal was to determine if relative bioavailability values (RBV) for fats and oils (lipids) determined in adult roosters are different than RBV determined with young broiler chickens. Lipids that were expected to have widely varying ME content were evaluated using a slope-ratio approach in adult roosters (Exp. 1) via the precision-fed rooster assay (PFRA) and broiler chicks via a growth assay (Exp. 2). The same lipids were tested in both experiments and were refined corn oil (RCO), a 2:1 blend of stearic acid (C18:0) with RCO (SAB1), a 1:1 blend of C18:0 with RCO (SAB2), tallow (TW), poultry fat (PF), and corn oil from a corn ethanol plant (DDGSCO)...
May 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28518283/branched-chain-amino-acids-for-people-with-hepatic-encephalopathy
#7
REVIEW
Lise Lotte Gluud, Gitte Dam, Iñigo Les, Giulio Marchesini, Mette Borre, Niels Kristian Aagaard, Hendrik Vilstrup
BACKGROUND: Hepatic encephalopathy is a brain dysfunction with neurological and psychiatric changes associated with liver insufficiency or portal-systemic shunting. The severity ranges from minor symptoms to coma. A Cochrane systematic review including 11 randomised clinical trials on branched-chain amino acids (BCAA) versus control interventions has evaluated if BCAA may benefit people with hepatic encephalopathy. OBJECTIVES: To evaluate the beneficial and harmful effects of BCAA versus any control intervention for people with hepatic encephalopathy...
May 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28516269/%C3%AE-alanine-intercede-metabolic-recovery-for-amelioration-of-human-cervical-and-renal-tumors
#8
Muthuraman Pandurangan, Gansukh Enkhtaivan, Bhupendra Mistry, Rahul V Patel, Sohyun Moon, Doo Hwan Kim
β-Alanine is a non-essential amino acid and presents as a major component of various sports supplements. It is a non-proteogenic amino acid, formed in vivo by degradation of carnosine, anserine, balenine, and dihydrouracil. The present study was aimed at investigating the anti-tumor effects of β-alanine in renal and cervical tumor cells. Sulforhodamine-B assay and flow cytometric analysis were used to measure cell viability. Lactate dehydrogenase (LDH) expression was analyzed using FITC-conjugated fluorescent antibody...
May 17, 2017: Amino Acids
https://www.readbyqxmd.com/read/28515647/comparative-study-on-compositions-and-functional-properties-of-porcine-chicken-and-duck-blood
#9
Supaluk Sorapukdee, Supawadee Narunatsopanon
Hematological, chemical and functional characteristics of porcine, chicken and duck blood were evaluated. A porcine blood sample showed the most abundant red blood cell, hemoglobin concentration, packed cell volume and plasma protein content as well as its freeze-dried blood possessed the highest contents of protein, fat, Cu and Cr with the highest percentage of heme iron (p<0.05). Unlike porcine blood, chicken blood showed a well balance in some essential amino acids, specifically for a higher isoleucine content (p<0...
2017: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/28514443/cancer-progression-by-reprogrammed-bcaa-metabolism-in-myeloid-leukaemia
#10
Ayuna Hattori, Makoto Tsunoda, Takaaki Konuma, Masayuki Kobayashi, Tamas Nagy, John Glushka, Fariba Tayyari, Daniel McSkimming, Natarajan Kannan, Arinobu Tojo, Arthur S Edison, Takahiro Ito
Reprogrammed cellular metabolism is a common characteristic observed in various cancers. However, whether metabolic changes directly regulate cancer development and progression remains poorly understood. Here we show that BCAT1, a cytosolic aminotransferase for branched-chain amino acids (BCAAs), is aberrantly activated and functionally required for chronic myeloid leukaemia (CML) in humans and in mouse models of CML. BCAT1 is upregulated during progression of CML and promotes BCAA production in leukaemia cells by aminating the branched-chain keto acids...
May 17, 2017: Nature
https://www.readbyqxmd.com/read/28504889/genetic-characterization-of-vana-enterococcus-faecium-isolates-from-wild-red-legged-partridges-in-portugal
#11
Vanessa Silva, Gilberto Igrejas, Isabel Carvalho, Fernando Peixoto, Lucas Cardoso, José Eduardo Pereira, Rosa Del Campo, Patricia Poeta
Vancomycin-resistant enterococci (VRE) have been detected in wild animals representing a public health concern. The red-legged partridge (Alectoris rufa) is a common game bird and its meat is consumed in several countries, including Portugal. Three hundred five fecal samples of red-legged partridge from the north of Portugal were screened for VRE. Samples were cultured on Slanetz-Bartley agar supplemented with vancomycin (4 mg/L) and six vanA-Enterococcus faecium were recovered. Isolates were tested for antibiotic resistance and virulence genes...
May 15, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28498331/the-roles-of-glutamine-in-the-intestine-and-its-implication-in-intestinal-diseases
#12
REVIEW
Min-Hyun Kim, Hyeyoung Kim
Glutamine, the most abundant free amino acid in the human body, is a major substrate utilized by intestinal cells. The roles of glutamine in intestinal physiology and management of multiple intestinal diseases have been reported. In gut physiology, glutamine promotes enterocyte proliferation, regulates tight junction proteins, suppresses pro-inflammatory signaling pathways, and protects cells against apoptosis and cellular stresses during normal and pathologic conditions. As glutamine stores are depleted during severe metabolic stress including trauma, sepsis, and inflammatory bowel diseases, glutamine supplementation has been examined in patients to improve their clinical outcomes...
May 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28495509/cloning-of-three-heat-shock-protein-genes-hsp70-hsp90%C3%AE-and-hsp90%C3%AE-and-their-expressions-in-response-to-thermal-stress-in-loach-misgurnus-anguillicaudatus-fed-with-different-levels-of-vitamin-c
#13
Jie Yan, Xiao Liang, Yin Zhang, Yang Li, Xiaojuan Cao, Jian Gao
Heat shock protein 70 (HSP70) and 90 (HSP90) are the most broadly studied proteins in HSP families. They play key roles in cells as molecular chaperones, in response to stress conditions such as thermal stress. In this study, full-length cDNA sequences of HSP70, HSP90α and HSP90β from loach Misgurnus anguillicaudatus were cloned. The full-length cDNA of HSP70 in loach was 2332bp encoding 644 amino acids, while HSP90α and HSP90β were 2586bp and 2678bp in length, encoding 729 and 727 amino acids, respectively...
May 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28493406/beta-hydroxy-beta-methylbutyrate-supplementation-and-skeletal-muscle-in-healthy-and-muscle-wasting-conditions
#14
REVIEW
Milan Holeček
Beta-hydroxy-beta-methylbutyrate (HMB) is a metabolite of the essential amino acid leucine that has been reported to have anabolic effects on protein metabolism. The aims of this article were to summarize the results of studies of the effects of HMB on skeletal muscle and to examine the evidence for the rationale to use HMB as a nutritional supplement to exert beneficial effects on muscle mass and function in various conditions of health and disease. The data presented here indicate that the beneficial effects of HMB have been well characterized in strength-power and endurance exercise...
May 10, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28490866/nonpharmacological-interventions-to-treat-physical-frailty-and-sarcopenia-in-older-patients-a-systematic-overview-the-senator-project-ontop-series
#15
REVIEW
Isabel Lozano-Montoya, Andrea Correa-Pérez, Iosief Abraha, Roy L Soiza, Antonio Cherubini, Denis O'Mahony, Alfonso J Cruz-Jentoft
BACKGROUND: Physical frailty (PF) and sarcopenia are predictors of negative health outcomes such as falls, disability, hospitalization, and death. Some systematic reviews (SRs) have been published on different nonpharmacological treatments of frailty and sarcopenia using heterogeneous definitions of them. OBJECTIVE: To critically appraise the evidence from SRs of the primary studies on nonpharmacological interventions to treat PF (defined by Fried's frailty phenotype) and sarcopenia (defined by the EWGSOP) in older patients...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28487428/microbiota-derived-short-chain-fatty-acids-modulate-expression-of-campylobacter-jejuni-determinants-required-for-commensalism-and-virulence
#16
Paul M Luethy, Steven Huynh, Deborah A Ribardo, Sebastian E Winter, Craig T Parker, David R Hendrixson
Campylobacter jejuni promotes commensalism in the intestinal tracts of avian hosts and diarrheal disease in humans, yet components of intestinal environments recognized as spatial cues specific for different intestinal regions by the bacterium to initiate interactions in either host are mostly unknown. By analyzing a C. jejuni acetogenesis mutant defective in converting acetyl coenzyme A (Ac-CoA) to acetate and commensal colonization of young chicks, we discovered evidence for in vivo microbiota-derived short-chain fatty acids (SCFAs) and organic acids as cues recognized by C...
May 9, 2017: MBio
https://www.readbyqxmd.com/read/28487390/activation-of-the-amino-acid-response-pathway-blunts-the-effects-of-cardiac-stress
#17
Pu Qin, Pelin Arabacilar, Roberta E Bernard, Weike Bao, Alan R Olzinski, Yuanjun Guo, Hind Lal, Stephen H Eisennagel, Michael C Platchek, Wensheng Xie, Julius Del Rosario, Mohamad Nayal, Quinn Lu, Theresa Roethke, Christine G Schnackenberg, Fe Wright, Michael P Quaile, Wendy S Halsey, Ashley M Hughes, Ganesh M Sathe, George P Livi, Robert B Kirkpatrick, Xiaoyan A Qu, Deepak K Rajpal, Maria Faelth Savitski, Marcus Bantscheff, Gerard Joberty, Giovanna Bergamini, Thomas L Force, Gregory J Gatto, Erding Hu, Robert N Willette
BACKGROUND: The amino acid response (AAR) is an evolutionarily conserved protective mechanism activated by amino acid deficiency through a key kinase, general control nonderepressible 2. In addition to mobilizing amino acids, the AAR broadly affects gene and protein expression in a variety of pathways and elicits antifibrotic, autophagic, and anti-inflammatory activities. However, little is known regarding its role in cardiac stress. Our aim was to investigate the effects of halofuginone, a prolyl-tRNA synthetase inhibitor, on the AAR pathway in cardiac fibroblasts, cardiomyocytes, and in mouse models of cardiac stress and failure...
May 9, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28484595/fetal-and-neonatal-programming-of-postnatal-growth-and-feed-efficiency-in-swine
#18
REVIEW
Yun Ji, Zhenlong Wu, Zhaolai Dai, Xiaolong Wang, Ju Li, Binggen Wang, Guoyao Wu
Maternal undernutrition or overnutrition during pregnancy alters organ structure, impairs prenatal and neonatal growth and development, and reduces feed efficiency for lean tissue gains in pigs. These adverse effects may be carried over to the next generation or beyond. This phenomenon of the transgenerational impacts is known as fetal programming, which is mediated by stable and heritable alterations of gene expression through covalent modifications of DNA and histones without changes in DNA sequences (namely, epigenetics)...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28482746/neuromuscular-electrical-stimulation-combined-with-protein-ingestion-preserves-thigh-muscle-mass-but-not-muscle-function-in-healthy-older-adults-during-5-days-of-bed-rest
#19
Paul Reidy, Alec McKenzie, Preston Brunker, Daniel Nelson, Katherine Barrows, Mark Supiano, Paul LaStayo, Micah Drummond
Short-term bed rest in older adults is characterized by significant loss in leg lean mass and strength posing significant health consequences. The purpose of this study was to determine in healthy older adults if the daily combination of neuromuscular electrical stimulation and protein supplementation (NMES+PRO) would protect muscle mass and function after 5-days of bed rest. Twenty healthy older adults (~70y) were subjected to 5-days of continuous bed rest and were randomized into one of two groups: NMES+PRO (n=10) or CON (n=10)...
May 8, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/28482094/dietary-manganese-supplementation-modulated-mechanical-and-ultrastructural-changes-during-eggshell-formation-in-laying-hens
#20
Y N Zhang, H J Zhang, S G Wu, J Wang, G H Qi
This study evaluated the mechanical and ultrastructural changes during eggshell formation in laying hens by using the optimal levels of organic and inorganic manganese (Mn). A total of 270 62-wk-old Hy-Line Brown laying hens were fed a basal diet containing 25.1 mg Mn per kg feed for 2 wks, after which they were randomly allocated into 3 groups and fed the basal diet (control) or the basal diet supplemented with 120 mg Mn per kg feed from monohydrate Mn sulfate (an inorganic source of Mn), or 80 mg Mn per kg feed from an amino acid-Mn complex (an organic source of Mn) for 12 wks...
May 6, 2017: Poultry Science
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