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Glutamine supplementation

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https://www.readbyqxmd.com/read/28732794/glutamine-protects-intestinal-calcium-absorption-against-oxidative-stress-and-apoptosis
#1
Luciana Moine, Gabriela Díaz de Barboza, Adriana Pérez, Mercedes Benedetto, Nori Tolosa de Talamoni
The aim of this study was to investigate whether glutamine (GLN) could block the inhibition of the intestinal Ca(2+) absorption caused by menadione (MEN), and elucidate the underlying mechanisms. To do this, one-month old chicks were divided in four groups: 1) controls, 2) MEN treated, 3) GLN treated and 4) GLN treated before or after MEN treatment. Intestinal Ca(2+) absorption as well as protein expression of molecules involved in the transcellular Ca(2+) pathway were determined. Glutathione (GSH) and superoxide anion and activity of enzymes of the antioxidant system were evaluated...
July 18, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28728379/effects-of-dietary-glutamine-and-arginine-supplementation-on-performance-intestinal-morphology-and-ascites-mortality-in-broiler-chickens-reared-under-cold-environment
#2
Rahim Abdulkarimi, Mohammad Hossien Shahir, Mohsen Daneshyar
Objective: An experiment was conducted to evaluate the effects of dietary glutamine (Gln) and arginine (Arg) supplementation on performance, intestinal morphology and ascites mortality in broilers. Methods: A total of 675 day old chicks were randomly allocated to 9 experimental groups in a 3×3 factorial arrangement based on a completely randomized design with 5 replicates of 15 chicks. Three levels of dietary Gln (0, 0.5 and 1%) and Arg (100, 130% and 160% of Ross recommendation) supplementation were used in ascites inducing condition (15±1 ˚C) from 7 to 42 days of age...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28717702/management-of-chemoradiation-induced-mucositis-in-head-and-neck-cancers-with-oral-glutamine
#3
Lucy Pattanayak, Niharika Panda, Manoj Kumar Dash, Sumita Mohanty, Sagarika Samantaray
PURPOSE: Head and neck cancers are the third most common cancers worldwide. Oral mucositis is the most common toxicity seen in patients who receive chemoradiation to treat head and neck cancer. The aim of this study was to evaluate the efficacy and safety of oral glutamine supplementation in these patients. MATERIALS AND METHODS: From December 2013 to December 2014, we randomly assigned to two arms 162 patients who had squamous cell carcinoma of the head and neck...
August 2016: Journal of Global Oncology
https://www.readbyqxmd.com/read/28713382/recent-advances-on-nutrition-in-treatment-of-acute-pancreatitis
#4
REVIEW
Li-Long Pan, Jiahong Li, Muhammad Shamoon, Madhav Bhatia, Jia Sun
Acute pancreatitis (AP) is a common abdominal acute inflammatory disorder and the leading cause of hospital admission for gastrointestinal disorders in many countries. Clinical manifestations of AP vary from self-limiting local inflammation to devastating systemic pathological conditions causing significant morbidity and mortality. To date, despite extensive efforts in translating promising experimental therapeutic targets in clinical trials, disease-specific effective remedy remains obscure, and supportive care has still been the primary treatment for this disease...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28712602/anaplerotic-therapy-in-propionic-acidemia
#5
Nicola Longo, Leisa B Price, Eduard Gappmaier, Nancy L Cantor, Sharon L Ernst, Carrie Bailey, Marzia Pasquali
BACKGROUND: Propionic acidemia is a rare metabolic disorder caused by a deficiency of propionyl- CoA carboxylase, the enzyme converting propionyl-CoA to methylmalonyl-CoA that subsequently enters the citric acid cycle as succinyl-CoA. Patients with propionic acidemia cannot metabolize propionic acid, which combines with oxaloacetate to form methylcitric acid. This, with the defective supply of succinyl-CoA, may lead to a deficiency in citric acid cycle intermediates. PURPOSE: The objective of this study was to determine whether supplements with glutamine (400mg/kg per day), citrate (7...
July 12, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/28682474/autologous-serum-supplement-favours-in-vitro-regenerative-paracrine-factors-synthesis
#6
Nazmul Haque, Noor Hayaty Abu Kasim, Noor Lide Abu Kassim, Mohammad Tariqur Rahman
OBJECTIVES: Foetal bovine serum (FBS) is often the serum supplement of choice for in vitro human cell culture. This study compares the effect of FBS and autologous human serum (AuHS) supplement in human peripheral blood mononuclear cell (PBMC) culture to prepare secretome. MATERIALS AND METHODS: The PBMC (n = 7) were cultured either in RPMI-1640 containing L-glutamine and 50 units/ml Penicillin-Streptomycin (BM) or in BM with either AuHS or FBS. Viability, proliferation and differentiation of PBMC were evaluated...
July 6, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28675566/effects-of-two-different-glutamine-containing-enteral-supplements-on-stool-frequency-and-density-in-elderly-patients-recovering-from-acute-critical-illness
#7
Nobutoshi Fushimi, Munenori Yamada, Hiroki Hachiya, Shun Ito, Takashi Shibuya, Noritsugu Ohashi, Akihiro Mori
AIM: Glutamine has various beneficial functions in the gastrointestinal tract. The present study was designed to investigate the effect of two different glutamine supplements on bowel movement at the start of enteral feeding in elderly inpatients. METHODS: This was a double-blind, prospective, randomized comparison study. A total of 25 patients aged >75 years recovering from a critical illness in a non-intensive care unit and scheduled for tube feeding were recruited...
July 4, 2017: Geriatrics & Gerontology International
https://www.readbyqxmd.com/read/28671626/effects-of-carbohydrate-and-glutamine-supplementation-on-oral-mucosa-immunity-after-strenuous-exercise-at-high-altitude-a-double-blind-randomized-trial
#8
Aline Venticinque Caris, Edgar Tavares Da Silva, Samile Amorim Dos Santos, Sergio Tufik, Ronaldo Vagner Thomatieli Dos Santos
This study analyzed the effects of carbohydrate and glutamine supplementation on salivary immunity after exercise at a simulated altitude of 4500 m. Fifteen volunteers performed exercise of 70% of VO2peak until exhaustion and were divided into three groups: hypoxia placebo, hypoxia 8% maltodextrin (200 mL/20 min), and hypoxia after six days glutamine (20 g/day) and 8% maltodextrin (200 mL/20 min). All procedures were randomized and double-blind. Saliva was collected at rest (basal), before exercise (pre-exercise), immediately after exercise (post-exercise), and two hours after exercise...
July 3, 2017: Nutrients
https://www.readbyqxmd.com/read/28659375/role-of-glutamine-and-interlinked-asparagine-metabolism-in-vessel-formation
#9
Hongling Huang, Saar Vandekeere, Joanna Kalucka, Laura Bierhansl, Annalisa Zecchin, Ulrike Brüning, Asjad Visnagri, Nadira Yuldasheva, Jermaine Goveia, Bert Cruys, Katleen Brepoels, Sabine Wyns, Stephen Rayport, Bart Ghesquière, Stefan Vinckier, Luc Schoonjans, Richard Cubbon, Mieke Dewerchin, Guy Eelen, Peter Carmeliet
Endothelial cell (EC) metabolism is emerging as a regulator of angiogenesis, but the precise role of glutamine metabolism in ECs is unknown. Here, we show that depriving ECs of glutamine or inhibiting glutaminase 1 (GLS1) caused vessel sprouting defects due to impaired proliferation and migration, and reduced pathological ocular angiogenesis. Inhibition of glutamine metabolism in ECs did not cause energy distress, but impaired tricarboxylic acid (TCA) cycle anaplerosis, macromolecule production, and redox homeostasis...
June 28, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28646814/nutritional-management-of-metabolic-endotoxemia-a-clinical-review
#10
Benjamin I Brown
Context • Diet-induced, metabolic endotoxemia is emerging as an important contributory factor to the development of a wide range of chronic diseases, including cardiometabolic, autoimmune, psychiatric, and neurodegenerative illnesses. Emerging human clinical studies have demonstrated that diet and dietary components are potent modifiers of circulating endotoxins and can be used to reduce plasma levels significantly and improve metabolic health. Objective • The aim of the current study was to explore briefly the concept of metabolic endotoxemia and its relationship to disease development, to examine the influence of diet and dietary components on circulating endotoxins, and, finally, discuss the clinical relevance of nutritional interventions for management of metabolic endotoxemia...
July 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28628108/germline-hypomorphic-card11-mutations-in-severe-atopic-disease
#11
Chi A Ma, Jeffrey R Stinson, Yuan Zhang, Jordan K Abbott, Michael A Weinreich, Pia J Hauk, Paul R Reynolds, Jonathan J Lyons, Celeste G Nelson, Elisa Ruffo, Batsukh Dorjbal, Salomé Glauzy, Natsuko Yamakawa, Swadhinya Arjunaraja, Kelsey Voss, Jennifer Stoddard, Julie Niemela, Yu Zhang, Sergio D Rosenzweig, Joshua J McElwee, Thomas DiMaggio, Helen F Matthews, Nina Jones, Kelly D Stone, Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti, Brian Kim, Megan A Cooper, Neil Romberg, Eric Meffre, Erwin W Gelfand, Andrew L Snow, Joshua D Milner
Few monogenic causes for severe manifestations of common allergic diseases have been identified. Through next-generation sequencing on a cohort of patients with severe atopic dermatitis with and without comorbid infections, we found eight individuals, from four families, with novel heterozygous mutations in CARD11, which encodes a scaffolding protein involved in lymphocyte receptor signaling. Disease improved over time in most patients. Transfection of mutant CARD11 expression constructs into T cell lines demonstrated both loss-of-function and dominant-interfering activity upon antigen receptor-induced activation of nuclear factor-κB and mammalian target of rapamycin complex 1 (mTORC1)...
June 19, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28621016/acute-effects-of-phenylbutyrate-on-glutamine-branched-chain-amino-acid-and-protein-metabolism-in-skeletal-muscles-of-rats
#12
Milan Holecek, Melita Vodenicarovova, Pavel Siman
Phenylbutyrate (PB) acts as chemical chaperone and histone deacetylase inhibitor, which is used to decrease ammonia in urea cycle disorders and has been investigated for use in the treatment of a number of lethal illnesses. We performed in vivo and in vitro experiments to examine the effects of PB on glutamine (GLN), branched-chain amino acid (BCAA; valine, leucine and isoleucine) and protein metabolism in rats. In the first study, animals were sacrificed one hour after three injections of PB (300mg/kg b...
June 16, 2017: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/28620826/individual-amino-acid-supplementation-can-improve-energy-metabolism-and-decrease-ros-production-in-neuronal-cells-overexpressing-alpha-synuclein
#13
Vedad Delic, Jeddidiah W D Griffin, Sandra Zivkovic, Yumeng Zhang, Tam-Anh Phan, Henry Gong, Dale Chaput, Christian Reynes, Vinh B Dinh, Josean Cruz, Eni Cvitkovic, Devon Placides, Ernide Frederic, Hamed Mirzaei, Stanley M Stevens, Umesh Jinwal, Daniel C Lee, Patrick C Bradshaw
Parkinson's disease (PD) is a neurodegenerative disorder characterized by alpha-synuclein accumulation and loss of dopaminergic neurons in the substantia nigra (SN) region of the brain. Increased levels of alpha-synuclein have been shown to result in loss of mitochondrial electron transport chain complex I activity leading to increased reactive oxygen species (ROS) production. WT alpha-synuclein was stably overexpressed in human BE(2)-M17 neuroblastoma cells resulting in increased levels of an alpha-synuclein multimer, but no increase in alpha-synuclein monomer levels...
June 15, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28620271/glutamine-ameliorates-mucosal-damage-caused-by-immune-responses-to-duck-plague-virus
#14
Yuanyuan Zhang, Lili Zhao, Yan Zhou, Chenxi Diao, Lingxia Han, Niu Yinjie, Shengwang Liu, Hongyan Chen
The immune-releasing effects of L-glutamine (Gln) supplementation in duck plague virus (DPV)-infected ducklings were evaluated in 120 seven-day-old ducklings that were divided into 8 groups. The ducklings in control and DPV, 0.5Gln and DPV + 0.5Gln, 1.0Gln and DPV + 1.0Gln, and 2.0Gln and DPV + 2.0Gln received 0, 0.5, 1.0, and 2.0 g of Gln/kg feed/d by gastric perfusion, respectively. Then, the ducklings in control to 2.0Gln were injected with 0.2 mL of phosphate-buffered saline, while those in DPV to DPV + 2...
April 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28614987/role-of-amino-acid-supplementation-in-prevention-of-necrotizing-enterocolitis-in-preterm-neonates-a-review-of-current-evidences
#15
Bhawan Deep Garg, Nandkishor S Kabra
BACKGROUND: Necrotizing enterocolitis (NEC) is one of the most common acute and fatal gastrointestinal emergency in very low birth weight (VLBW) preterm neonates with mortality range from 15-30%. NEC is likely due to multifactorial process such as oxidative injury, ischemic necrosis and over reactive inflammatory response to intestinal microbes. AIMS: To evaluate the role of amino acid supplementation for reduction of neonatal NEC in preterm neonates. METHOD: The literature search was done for various randomized control trial (RCT) by searching the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE, Web of Science, Scopus, Index Copernicus, African Index Medicus (AIM), Thomson Reuters (ESCI), Chemical Abstracts Service (CAS) and other data base...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28603530/amino-acids-are-an-ineffective-fertilizer-for-dunaliella-spp-growth
#16
Colin A Murphree, Jacob T Dums, Siddharth K Jain, Chengsong Zhao, Danielle Y Young, Nicole Khoshnoodi, Andrey Tikunov, Jeffrey Macdonald, Guillaume Pilot, Heike Sederoff
Autotrophic microalgae are a promising bioproducts platform. However, the fundamental requirements these organisms have for nitrogen fertilizer severely limit the impact and scale of their cultivation. As an alternative to inorganic fertilizers, we investigated the possibility of using amino acids from deconstructed biomass as a nitrogen source in the genus Dunaliella. We found that only four amino acids (glutamine, histidine, cysteine, and tryptophan) rescue Dunaliella spp. growth in nitrogen depleted media, and that supplementation of these amino acids altered the metabolic profile of Dunaliella cells...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28597057/an-l-glutamine-transporter-isoform-for-neurogenesis-facilitated-by-l-theanine
#17
REVIEW
Yukio Yoneda
L-Theanine (=γ-glutamylethylamide) is an amino acid ingredient in green tea with a structural analogy to L-glutamine (L-GLN) rather than L-glutamic acid (L-GLU), with regards to the absence of a free carboxylic acid moiety from the gamma carbon position. L-theanine markedly inhibits [(3)H]L-GLN uptake without affecting [(3)H]L-GLU uptake in cultured neurons and astroglia. In neural progenitor cells with sustained exposure to L-theanine, upregulation of the L-GLN transporter isoform Slc38a1 expression and promotion of both proliferation and neuronal commitment are seen along with marked acceleration of the phosphorylation of mammalian target of rapamycin (mTOR) and relevant downstream proteins...
June 9, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28581445/glutamine-supplementation-suppresses-herpes-simplex-virus-reactivation
#18
Kening Wang, Yo Hoshino, Kennichi Dowdell, Marta Bosch-Marce, Timothy G Myers, Mayra Sarmiento, Lesley Pesnicak, Philip R Krause, Jeffrey I Cohen
Chronic viral infections are difficult to treat, and new approaches are needed, particularly those aimed at reducing reactivation by enhancing immune responses. Herpes simplex virus (HSV) establishes latency and reactivates frequently, and breakthrough reactivation can occur despite suppressive antiviral therapy. Virus-specific T cells are important to control HSV, and proliferation of activated T cells requires increased metabolism of glutamine. Here, we found that supplementation with oral glutamine reduced virus reactivation in latently HSV-1-infected mice and HSV-2-infected guinea pigs...
June 30, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28578495/timeline-of-intestinal-adaptation-after-malabsortive-surgery-effect-of-luminal-nutrients-biliopancreatic-secretion-and-glutamine-supplementation
#19
José Manuel Martínez Moreno, Alexander Reyes-Ortiz, José María Lage Sánchez, Pilar Sánchez-Gallegos, Manuel Garcia-Caballero
BACKGROUND: The aim of this study was to study the process of intestinal adaptation in the three limbs of the small intestine after malabsorptive bariatric surgery: the biliopancreatic limb, the alimentary limb, and the common channel. These limbs are exposed to different stimuli, namely, gastrointestinal transit and nutrients in the alimentary limb, biliopancreatic secretions in the biliopancreatic limb, and a mix of both in the common channel. We also wished to investigate the effect of glutamine supplementation on the adaptation process...
June 4, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28562777/proteic-and-phenolics-compounds-contents-in-bacupari-callus-cultured-with-glutamine-and-nitrogen-sources
#20
H P Marques, S Barbosa, D A Nogueira, M H Santos, B R Santos, P R Santos-Filho
In this study was evaluated the influence of glutamine supplementation on the endogenous content of amino acids, proteins, total phenolics, flavonoids and proanthocyanidins in Bacupari callus. The explants were inoculated in MS medium, MS with half concentration of the nitrogen salts (MS½) and nitrogen-free MS, supplemented with glutamine (5, 10, 30 and 60mM) named as Gln5, Gln10, Gln30 and Gln60. Amino acids and proteins were analyzed after 20, 80 and 140 days and the secondary metabolites on the 140th day...
May 25, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
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