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Glutamine supplementation

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https://www.readbyqxmd.com/read/29770871/the-effects-of-acute-leucine-or-leucine-glutamine-co-ingestion-on-recovery-from-eccentrically-biased-exercise
#1
Mark Waldron, Cameron Ralph, Owen Jeffries, Jamie Tallent, Nicola Theis, Stephen David Patterson
This study investigated the effects of leucine or leucine + glutamine supplementation on recovery from eccentric exercise. In a double-blind independent groups design, 23 men were randomly assigned to a leucine (0.087 g/kg; n = 8), leucine + glutamine (0.087 g/kg + glutamine 0.3 g/kg; n = 8) or placebo (0.3 g/kg maltodextrin; n = 7) group. Participants performed 5 sets of drop jumps, with each set comprising 20 repetitions. Isometric knee-extensor strength, counter-movement jump (CMJ) height, delayed-onset muscle soreness (DOMS) and creatine kinase (CK) were measured at baseline, 1, 24, 48 h and 72 h post-exercise...
May 16, 2018: Amino Acids
https://www.readbyqxmd.com/read/29770867/dietary-supplementation-with-an-amino-acid-blend-enhances-intestinal-function-in-piglets
#2
Dan Yi, Baocheng Li, Yongqing Hou, Lei Wang, Di Zhao, Hongbo Chen, Tao Wu, Ying Zhou, Binying Ding, Guoyao Wu
The traditionally classified nutritionally non-essential amino acids are now known to be insufficiently synthesized for maximal growth and optimal health in piglets. This study determined the effects of dietary supplementation with an amino acid blend (AAB; glutamate:glutamine:glycine:arginine:N-acetylcysteine = 5:2:2:1:0.5) on piglet growth performance and intestinal functions. Sixteen piglets (24-day-old) were randomly assigned to a corn and soybean meal-based diet supplemented with 0.99% alanine (isonitrogenous control) or 1% AAB...
May 16, 2018: Amino Acids
https://www.readbyqxmd.com/read/29767157/dietary-glutamine-glutamic-acid-and-nucleotide-supplementation-accelerate-carbon-turnover-%C3%AE-13-c-on-stomach-of-weaned-piglets
#3
Amanda D Assoni, Alessandro B Amorim, Mayra A D Saleh, Marcos L P Tse, Dirlei A Berto
The use of stable isotope analysis as a tool for characterization of carbon turnover (δ13 C) in piglet's tissues by tracing its feeding system has drawn attention. Thus, this study aimed at evaluating the influence of dietary glutamine, glutamic acid and nucleotides supplementation on carbon turnover in fundic-stomach region of weaned piglets at an average age of 21 days. The diets consisted of additive-free diet - control (C); 1% glutamine (G); 1% glutamic acid (GA) and 1% nucleotides (Nu). At weaning day (day 0: baseline), 3 piglets were slaughtered to quantify the δ13 C of stomach...
September 2017: Animal nutrition
https://www.readbyqxmd.com/read/29756979/prevention-of-oral-mucositis-secondary-to-antineoplastic-treatments-in-head-and-neck-cancer-by-supplementation-with-oral-glutamine
#4
Jerónimo Pachón Ibáñez, José Luis Pereira Cunill, Guiovana Fernanda Osorio Gómez, Jose Antonio Irles Rocamora, Pilar Serrano Aguayo, Begoña Quintana Ángel, José Fuentes Pradera, Manuel Chaves Conde, María José Ortiz Gordillo, Pedro Pablo García Luna
OBJECTIVES: to evaluate the efficacy of glutamine in the prevention of the incidence of oral mucositis secondary to cancer therapies in patients with head and neck cancer (HNC). Secondary objectives were to know the incidence of odynophagia, interruptions of treatment and the requirements of analgesia and nasogastric tube. MATERIAL AND METHODS: prospective cohort study of patients with squamous cell carcinoma of HNC treated with radiotherapy ± concomitant chemotherapy...
February 27, 2018: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29755574/branched-chain-amino-acids-in-health-and-disease-metabolism-alterations-in-blood-plasma-and-as-supplements
#5
REVIEW
Milan Holeček
Branched-chain amino acids (BCAAs; valine, leucine, and isoleucine) are essential amino acids with protein anabolic properties, which have been studied in a number of muscle wasting disorders for more than 50 years. However, until today, there is no consensus regarding their therapeutic effectiveness. In the article is demonstrated that the crucial roles in BCAA metabolism play: (i) skeletal muscle as the initial site of BCAA catabolism accompanied with the release of alanine and glutamine to the blood; (ii) activity of branched-chain keto acid dehydrogenase (BCKD); and (iii) amination of branched-chain keto acids (BCKAs) to BCAAs...
2018: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29740930/retraction-of-articles-by-dr-m-aramli
#6
(no author information available yet)
The below articles published online on Wiley Online Library (wileyonlinelibrary.com) have been retracted by agreement between the submitting author, Mohammad Sadegh Aramli, the Editor-in-Chief, Heriberto Rodriguez-Martinez, and Blackwell Verlag GmbH. After a thorough investigation, there is strong evidence to indicate that the peer review of these papers was compromised. The identities of the reviewers were unable to be verified, and it is believed that these papers were accepted based on recommendations from reviewers not suitably qualified...
June 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29710029/gender-difference-and-dietary-supplemental-vitamin-b-6-impact-on-colon-luminal-environment
#7
Dwi Eva Nirmagustina, Yongshou Yang, Thanutchaporn Kumrungsee, Noriyuki Yanaka, Norihisa Kato
Colon diseases can be affected by several factors such as gender difference and dietary supplemental vitamin B6 (B6 ). The nutritional status of B6 is affected by gender difference, leading us to hypothesize that gender difference affects colon luminal environment, which is dependent on B6 status. To investigate this hypothesis, we fed male and female rats a diet containing 1 mg, 7 mg, or 35 mg pyridoxine HCl/kg diet for 6 wk. We found significantly higher fecal mucin levels in female rats compared to those in male rats...
2018: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/29690745/-advances-in-the-research-of-effects-of-glutamine-on-immune-function-of-burn-patients
#8
Y H Liu, P F Guo, G Y Chen, Y C Bo, Y Ma, Z J Cui
Glutamine is the most abundant amino acid found in plasma and cells. It is the preferred fuel for enterocytes in the small intestine, macrophages, and lymphocytes. After serious burn, increased requirement of glutamine by the gastrointestinal tract, kidney and lymphocytes, and relatively insufficient self synthesis likely contribute to the rapid decline of glutamine in circulation and cells. Glutamine supplementation can not only protect intestinal mucosa, maintain normal intestinal barrier function, reduce bacterial translocation, and enhance the intestinal immune function, but also increase the number of lymphocytes, enhance the phagocytic function of macrophage, promote the synthesis of immunoglobulin, and reduce the body's inflammatory response, so as to enhance the immune function...
April 20, 2018: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/29683848/effects-of-hiv-art-and-prebiotics-on-the-active-fraction-of-the-gut-microbiota
#9
Simon Deusch, Sergio Serrano-Villar, David Rojo, Mónica Martínez-Martínez, Rafael Bargiela, Jorge F Vázquez-Castellanos, Talía Sainz, Coral Barbas, Andrés Moya, Santiago Moreno, María J Gosalbes, Vicente Estrada, Jana Seifert, Manuel Ferrer
OBJECTIVE: In a recent blinded randomized study, we found that in HIV individuals a short supplementation with prebiotics (scGOS/lcFOS/glutamine) ameliorates dysbiosis of total gut bacteria, particularly among viremic untreated patients. Our study goal was to determine the fraction of the microbiota that becomes active during the intervention and that could provide additional functional information. DESIGN: A total of six healthy individuals, and 16 HIV-infected patients comprising viremic untreated patients (n = 5) and antiretroviral therapy-treated (ART) patients that are further divided into immunological responders (n = 7) and immunological nonresponders (n = 4) completed the 6-week course of prebiotic treatment, including six patients receiving a placebo...
April 19, 2018: AIDS
https://www.readbyqxmd.com/read/29672184/oral-supplementation-with-beta-hydroxy-beta-methylbutyrate-arginine-and-glutamine-improves-lean-body-mass-in-healthy-older-adults
#10
Amy C Ellis, Gary R Hunter, Amy M Goss, Barbara A Gower
Oral intake of beta-hydroxy-beta-methylbutyrate (HMB), arginine, and glutamine may ameliorate muscle loss by stimulating protein synthesis and decreasing protein degradation while simultaneously decreasing inflammation. Previous studies provide evidence for improvement in body composition with dietary supplementation of these ingredients among patients with muscle-wasting diseases. The objectives of this study were to examine the effects of this amino acid mixture on lean body mass, muscle volume, and physical function among healthy older adults...
April 19, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29657030/rewiring-of-glutamine-metabolism-is-a-bioenergetic-adaptation-of-human-cells-with-mitochondrial-dna-mutations
#11
Qiuying Chen, Kathryne Kirk, Yevgeniya I Shurubor, Dazhi Zhao, Andrea J Arreguin, Ifrah Shahi, Federica Valsecchi, Guido Primiano, Elizabeth L Calder, Valerio Carelli, Travis T Denton, M Flint Beal, Steven S Gross, Giovanni Manfredi, Marilena D'Aurelio
Using molecular, biochemical, and untargeted stable isotope tracing approaches, we identify a previously unappreciated glutamine-derived α-ketoglutarate (αKG) energy-generating anaplerotic flux to be critical in mitochondrial DNA (mtDNA) mutant cells that harbor human disease-associated oxidative phosphorylation defects. Stimulating this flux with αKG supplementation enables the survival of diverse mtDNA mutant cells under otherwise lethal obligatory oxidative conditions. Strikingly, we demonstrate that when residual mitochondrial respiration in mtDNA mutant cells exceeds 45% of control levels, αKG oxidative flux prevails over reductive carboxylation...
April 9, 2018: Cell Metabolism
https://www.readbyqxmd.com/read/29651749/medium-chain-triglycerides-supplement-therapy-with-a-low-carbohydrate-formula-can-supply-energy-and-enhance-ammonia-detoxification-in-the-hepatocytes-of-patients-with-adult-onset-type-ii-citrullinemia
#12
Kiyoshi Hayasaka, Chikahiko Numakura, Mitsunori Yamakawa, Tetsuo Mitsui, Hisayoshi Watanabe, Hiroaki Haga, Masahide Yazaki, Hiromasa Ohira, Yasuo Ochiai, Toshiyuki Tahara, Tamio Nakahara, Noriyo Yamashiki, Takahiro Nakayama, Takashi Kon, Hiroshi Mitsubuchi, Hiroshi Yoshida
Citrin, encoded by SLC25A13, constitutes the malate-aspartate shuttle, the main NADH-shuttle in the liver. Citrin deficiency causes neonatal intrahepatic cholestasis (NICCD) and adult-onset type II citrullinemia (CTLN2). Citrin deficiency is predicted to impair hepatic glycolysis and de novo lipogenesis, resulting in hepatic energy deficit. Secondary decrease in hepatic argininosuccinate synthetase (ASS1) expression has been considered a cause of hyperammonemia in CTLN2. We previously reported that medium-chain triglyceride (MCT) supplement therapy with a low-carbohydrate formula was effective in CTLN2 to prevent a relapse of hyperammonemic encephalopathy...
April 12, 2018: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29651419/management-of-glioblastoma-multiforme-in-a-patient-treated-with-ketogenic-metabolic-therapy-and-modified-standard-of-care-a-24-month-follow-up
#13
Ahmed M A Elsakka, Mohamed Abdel Bary, Eman Abdelzaher, Mostafa Elnaggar, Miriam Kalamian, Purna Mukherjee, Thomas N Seyfried
Few advances have been made in overall survival for glioblastoma multiforme (GBM) in more than 40 years. Here, we report the case of a 38-year-old man who presented with chronic headache, nausea, and vomiting accompanied by left partial motor seizures and upper left limb weakness. Enhanced brain magnetic resonance imaging revealed a solid cystic lesion in the right partial space suggesting GBM. Serum testing revealed vitamin D deficiency and elevated levels of insulin and triglycerides. Prior to subtotal tumor resection and standard of care (SOC), the patient conducted a 72-h water-only fast...
2018: Frontiers in Nutrition
https://www.readbyqxmd.com/read/29599243/erythrocytic-ferroportin-reduces-intracellular-iron-accumulation-hemolysis-and-malaria-risk
#14
De-Liang Zhang, Jian Wu, Binal N Shah, Katja C Greutélaers, Manik C Ghosh, Hayden Ollivierre, Xin-Zhuan Su, Philip E Thuma, George Bedu-Addo, Frank P Mockenhaupt, Victor R Gordeuk, Tracey A Rouault
Malaria parasites invade red blood cells (RBCs), consume copious amounts of hemoglobin, and severely disrupt iron regulation in humans. Anemia often accompanies malaria disease; however, iron supplementation therapy inexplicably exacerbates malarial infections. Here we found that the iron exporter ferroportin (FPN) was highly abundant in RBCs, and iron supplementation suppressed its activity. Conditional deletion of the Fpn gene in erythroid cells resulted in accumulation of excess intracellular iron, cellular damage, hemolysis, and increased fatality in malaria-infected mice...
March 30, 2018: Science
https://www.readbyqxmd.com/read/29590619/serine-availability-influences-mitochondrial-dynamics-and-function-through-lipid-metabolism
#15
Xia Gao, Katie Lee, Michael A Reid, Sydney M Sanderson, Chuping Qiu, Siqi Li, Juan Liu, Jason W Locasale
Cell proliferation can be dependent on the non-essential amino acid serine, and dietary restriction of serine inhibits tumor growth, but the underlying mechanisms remain incompletely understood. Using a metabolomics approach, we found that serine deprivation most predominantly impacts cellular acylcarnitine levels, a signature of altered mitochondrial function. Fuel utilization from fatty acid, glucose, and glutamine is affected by serine deprivation, as are mitochondrial morphological dynamics leading to increased fragmentation...
March 27, 2018: Cell Reports
https://www.readbyqxmd.com/read/29565299/%C3%AE-ketoglutarate-promotes-pancreatic-progenitor-like-cell-proliferation
#16
Jing Song, Dongshen Ma, Yun Xing, Shanshan Tang, Murad Alahdal, Jiamin Guo, Yi Pan, Yanfeng Zhang, Yumeng Shen, Qiong Wu, Zhou Lu, Liang Jin
A major source of β cell generation is pancreatic progenitor-like cell differentiation. Multiple studies have confirmed that stem cell metabolism plays important roles in self-renewal and proliferation. In the absence of glucose, glutamine provides the energy for cell division and growth. Furthermore, α-ketoglutarate (αKG), a precursor for glutamine synthesis, is sufficient for enabling glutamine-independent cell proliferation. We have demonstrated that αKG contributes to the large-scale proliferation of pancreatic progenitor-like cells that can provide an ample amount of clinically relevant β cells...
March 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29535731/nlrx1-modulates-immunometabolic-mechanisms-controlling-the-host-gut-microbiota-interactions-during-inflammatory-bowel-disease
#17
Andrew Leber, Raquel Hontecillas, Nuria Tubau-Juni, Victoria Zoccoli-Rodriguez, Vida Abedi, Josep Bassaganya-Riera
Interactions among the gut microbiome, dysregulated immune responses, and genetic factors contribute to the pathogenesis of inflammatory bowel disease (IBD). Nlrx1 -/- mice have exacerbated disease severity, colonic lesions, and increased inflammatory markers. Global transcriptomic analyses demonstrate enhanced mucosal antimicrobial defense response, chemokine and cytokine expression, and epithelial cell metabolism in colitic Nlrx1 -/- mice compared to wild-type (WT) mice. Cell-specificity studies using cre-lox mice demonstrate that the loss of NLRX1 in intestinal epithelial cells (IEC) recapitulate the increased sensitivity to DSS colitis observed in whole body Nlrx1 -/- mice...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29511657/effect-of-rapid-weight-loss-and-glutamine-supplementation-on-immunosuppression-of-combat-athletes-a-double-blind-placebo-controlled-study
#18
Aline C C Tritto, Mariane T Amano, Maria E De Cillo, Vinicius A Oliveira, Sandro H Mendes, Caroline Yoshioka, Hamilton Roschel, Niels Olsen S Camara, Bruno Gualano, Guilherme G Artioli
The role of plasma glutamine concentration and glutamine supplementation on immunosuppression was investigated in combat athletes. Twenty-three male athletes were randomly assigned to receive glutamine (21 g/day, n=12) or placebo (ovalbumin, n=11) for 10 days. Six athletes who did not lose weight served as controls. Athletes were assessed 21 days before (-21d), 1 day before (-1d) and 5 days after (+5d) a competition. Weight reduction was similar between glutamine (-8.2%± 4.1%) and placebo (-8.5%±2.4%) and negligible in control (-0...
February 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29495953/voglibose-mediated-alterations-in-neurometabolomic-profiles-in-the-hypothalamus-of-high-fat-diet-fed-mice
#19
Soo Jin Yang, Hyun Ju Do, Youngae Jung, Geum-Sook Hwang, Min-Jeong Shin
The alpha-glucosidase inhibitor voglibose (VO) was recently reported to have a protective effect against weight gain as well as affect various metabolic changes related to food intake and gut-brain signaling. We hypothesized that VO prevents weight gain by altering neurometabolome profiles in the hypothalamus to reduce food intake. To test this hypothesis, we assessed metabolite profiles in the hypothalamus of standard diet- or high-fat (HF) diet-fed mice in the absence or presence of VO. In total, 29 male C57BL/6 mice were divided into 3 groups: (1) lean control, (2) HF, and (3) HF + VO...
March 1, 2018: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29475571/effects-of-l-glutamine-on-boar-sperm-quality-during-liquid-storage-at-17%C3%A2-c
#20
Shunwei Wang, Meng Sun, Na Wang, Kang Yang, Haitao Guo, Jingran Wang, Yuting Zhang, Shunli Yue, Jiabo Zhou
The quality of boar spermatozoa is affected by oxidative stress during preservation in vitro. It has been demonstrated that L-Glutamine (Gln) can effectively protect cells from oxidative stress-induced injury. There are, however, no reports to date evaluating the effects of Gln on boar semen liquid preservation at 17 °C. The aims of the present study were to elucidate whether the addition of Gln to the extender BTS could improve the quality of boar spermatozoa when stored at 17 °C and to determine the mechanism underlying Gln protection of spermatozoa against preservation-induced damage...
April 2018: Animal Reproduction Science
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