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https://www.readbyqxmd.com/read/28330481/diverse-characteristics-of-the-urinary-excretion-of-amino-acids-in-humans-and-the-use-of-amino-acid-supplementation-to-reduce-fatigue-and-sub-health-in-adults
#1
R H Dunstan, D L Sparkes, M M Macdonald, X Janse De Jonge, B J Dascombe, J Gottfries, C-G Gottfries, T K Roberts
BACKGROUND: The excretion of amino acids in urine represents an important avenue for the loss of key nutrients. Some amino acids such as glycine and histidine are lost in higher abundance than others. These two amino acids perform important physiological functions and are required for the synthesis of key proteins such as haemoglobin and collagen. METHODS: Stage 1 of this study involved healthy subjects (n = 151) who provided first of the morning urine samples and completed symptom questionnaires...
March 23, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28259021/gas-chromatography-mass-spectrometry-profiles-of-urinary-organic-acids-in-healthy-captive-cheetahs-acinonyx-jubatus
#2
Adrian Stephen Wolferstan Tordiffe, Mari van Reenen, Fred Reyers, Lodewyk Jacobus Mienie
In captivity, cheetahs (Acinonyx jubatus) frequently suffer from several unusual chronic diseases that rarely occur in their free-ranging counterparts. In order to develop a better understanding of their metabolism and health we documented the urine organic acids of 41 apparently healthy captive cheetahs, in an untargeted metabolomic study, using gas chromatography-mass spectrometry. A total of 339 organic acids were detected and annotated. Phenolic compounds, thought to be produced by the anaerobic fermentation of aromatic amino acids in the distal colon, as well as their corresponding glycine conjugates, were present in high concentrations...
April 1, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28238459/linking-sources-to-early-effects-by-profiling-urine-metabolome-of-residents-living-near-oil-refineries-and-coal-fired-power-plants
#3
Chi-Hsin Sally Chen, Tzu-Hsuen Yuan, Ruei-Hao Shie, Kuen-Yuh Wu, Chang-Chuan Chan
BACKGROUND: This study aims at identifying metabolic changes linking external exposure to industrial air toxics with oxidative stress biomarkers. METHODS: We classified 252 study subjects as 111 high vs. 141 low exposure subjects by the distance from their homes to the two main emission sources, oil refineries and coal-fired power plants. We estimated individual's external exposure to heavy metals and polycyclic aromatic hydrocarbons (PAHs) by dispersion and kriging models, respectively...
February 23, 2017: Environment International
https://www.readbyqxmd.com/read/28221984/postharvest-reduction-of-coliphage-ms2-from-romaine-lettuce-during-simulated-commercial-processing-with-and-without-a-chlorine-based-sanitizer
#4
Samantha L Wengert, Tiong Gim Aw, Elliot T Ryser, Joan B Rose
Viral foodborne outbreaks are a serious threat to public health, and fresh produce is becoming increasingly recognized as a transmission vehicle. To limit foodborne disease, ready-to-eat leafy greens are typically washed with a chlorine-based sanitizer during commercial production. This study assessed the efficacy of a chlorine-based sanitizer against coliphage MS2, as a potential surrogate for foodborne viruses, on fresh-cut romaine lettuce during simulated commercial production using a small-scale processing line...
February 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28188896/alteration-of-neurotransmission-and-skeletogenesis-in-sea-urchin-arbacia-lixula-embryos-exposed-to-copper-oxide-nanoparticles
#5
Tiziana Cappello, Valeria Vitale, Sabrina Oliva, Valentina Villari, Angela Mauceri, Salvatore Fasulo, Maria Maisano
The extensive use of copper oxide nanoparticles (CuO NPs) in many applications has raised concerns over their toxicity on environment and human health. Herein, the embryotoxicity of CuO NPs was assessed in the black sea urchin Arbacia lixula, an intertidal species commonly present in the Mediterranean. Fertilized eggs were exposed to 0.7, 10 and 20ppb of CuO NPs, until pluteus stage. Interferences with the normal neurotransmission pathways were observed in sea urchin embryos. In detail, evidence of cholinergic and serotoninergic systems affection was revealed by dose-dependent decreased levels of choline and N-acetyl serotonin, respectively, measured by nuclear magnetic resonance (NMR)-based metabolomics, applied for the first time to our knowledge on sea urchin embryos...
February 7, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28167213/metagenomics-approach-to-the-study-of-the-gut-microbiome-structure-and-function-in-zebrafish-danio-rerio-fed-with-gluten-formulated-diet
#6
Hyunmin Koo, Joseph A Hakim, Mickie L Powell, Ranjit Kumar, Peter G Eipers, Casey D Morrow, Michael Crowley, Elliot J Lefkowitz, Stephen A Watts, Asim K Bej
In this study, we report the gut microbial composition and predictive functional profiles of zebrafish, Danio rerio, fed with a control formulated diet (CFD), and a gluten formulated diet (GFD) using a metagenomics approach and bioinformatics tools. The microbial communities of the GFD-fed D. rerio displayed heightened abundances of Legionellales, Rhizobiaceae, and Rhodobacter, as compared to the CFD-fed counterparts. Predicted metagenomics of microbial communities (PICRUSt) in GFD-fed D. rerio showed KEGG functional categories corresponding to bile secretion, secondary bile acid biosynthesis, and the metabolism of glycine, serine, and threonine...
February 3, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28115846/preparation-of-arginine-glycine-aspartic-acid-modified-biopolymeric-nanoparticles-containing-epigalloccatechin-3-gallate-for-targeting-vascular-endothelial-cells-to-inhibit-corneal-neovascularization
#7
Che-Yi Chang, Ming-Chen Wang, Takuya Miyagawa, Zhi-Yu Chen, Feng-Huei Lin, Ko-Hua Chen, Guei-Sheung Liu, Ching-Li Tseng
Neovascularization (NV) of the cornea can disrupt visual function, causing ocular diseases, including blindness. Therefore, treatment of corneal NV has a high public health impact. Epigalloccatechin-3-gallate (EGCG), presenting antiangiogenesis effects, was chosen as an inhibitor to treat human vascular endothelial cells for corneal NV treatment. An arginine-glycine-aspartic acid (RGD) peptide-hyaluronic acid (HA)-conjugated complex coating on the gelatin/EGCG self-assembly nanoparticles (GEH-RGD NPs) was synthesized for targeting the αvβ3 integrin on human umbilical vein endothelial cells (HUVECs) in this study, and a corneal NV mouse model was used to evaluate the therapeutic effect of this nanomedicine used as eyedrops...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28115703/complementary-roles-of-gasotransmitters-co-and-h2s-in-sleep-apnea
#8
Ying-Jie Peng, Xiuli Zhang, Anna Gridina, Irina Chupikova, David L McCormick, Robert J Thomas, Thomas E Scammell, Gene Kim, Chirag Vasavda, Jayasri Nanduri, Ganesh K Kumar, Gregg L Semenza, Solomon H Snyder, Nanduri R Prabhakar
Sleep apnea, which is the periodic cessation of breathing during sleep, is a major health problem affecting over 10 million people in the United States and is associated with several sequelae, including hypertension and stroke. Clinical studies suggest that abnormal carotid body (CB) activity may be a driver of sleep apnea. Because gaseous molecules are important determinants of CB activity, aberrations in their signaling could lead to sleep apnea. Here, we report that mice deficient in heme oxygenase-2 (HO-2), which generates the gaseous molecule carbon monoxide (CO), exhibit sleep apnea characterized by high apnea and hypopnea indices during rapid eye movement (REM) sleep...
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28111353/gc-ms-based-metabolomics-identifies-an-amino-acid-signature-of-acute-ischemic-stroke
#9
Dian Wang, Jing Kong, Jiayan Wu, Xingxing Wang, Minchao Lai
Ischemic stroke is a serious public health problem worldwide. Here, we characterized the metabolite features of acute ischemic stroke (AIS) using a gas chromatography-mass spectrometry-based metabolomics. Forty AIS patients and 29 sex and age-matched controls were recruited. The serum metabolic profiles were significantly different between the two groups. Compared to the controls, the patients had elevated levels of lactate, carbonate and glutamate (P<0.01), and lowered levels of alanine, citrate, glycine, isoleucine, leucine, serine, tyrosine, methionine, tryptophan, erythronic acid, urea, purine, hypoxanthine, and proline in the serum (P<0...
March 6, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28071805/antioxidant-and-chelating-capacity-of-maillard-reaction-products-in-amino-acid-sugar-model-systems-applications-for-food-processing
#10
Blanca A Mondaca-Navarro, Luz A Ávila-Villa, Aarón F González-Córdova, Jaime López-Cervantes, Dalia I Sánchez-Machado, Olga N Campas-Baypoli, Roberto Rodríguez-Ramírez
BACKGROUND: Maillard reaction products (MRP) have gained increasing interest owing to their both positive and negative effects on human health. Aqueous amino acid-sugar model systems were studied in order to evaluate the antioxidant and chelating activity of MRP under conditions similar to those of food processing. Amino acids (cysteine, glycine, isoleucine and lysine) combined with different sugars (fructose or glucose) were heated to 100 and 130 °C for 30, 60 and 90 min. Antioxidant capacity was evaluated via ABTS and DPPH free radical scavenging assays, in addition to Fe(2+) and Cu(2+) ion chelating capacity...
January 10, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28056769/a-genome-wide-association-study-of-seed-composition-traits-in-wild-soybean-glycine-soja
#11
Larry J Leamy, Hengyou Zhang, Changbao Li, Charles Y Chen, Bao-Hua Song
BACKGROUND: Cultivated soybean (Glycine max) is a major agricultural crop that provides a crucial source of edible protein and oil. Decreased amounts of saturated palmitic acid and increased amounts of unsaturated oleic acid in soybean oil are considered optimal for human cardiovascular health and therefore there has considerable interest by breeders in discovering genes affecting the relative concentrations of these fatty acids. Using a genome-wide association (GWA) approach with nearly 30,000 single nucleotide polymorphisms (SNPs), we investigated the genetic basis of protein, oil and all five fatty acid levels in seeds from a sample of 570 wild soybeans (Glycine soja), the progenitor of domesticated soybean, to identify quantitative trait loci (QTLs) affecting these seed composition traits...
January 5, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28025595/transcript-polymorphism-rates-in-soybean-seed-tissue-are-increased-in-a-single-transformant-of-glycine-max
#12
Kevin C Lambirth, Adam M Whaley, Jessica A Schlueter, Kenneth J Piller, Kenneth L Bost
Transgenic crops have been utilized for decades to enhance agriculture and more recently have been applied as bioreactors for manufacturing pharmaceuticals. Recently, we investigated the gene expression profiles of several in-house transgenic soybean events, finding one transformant group to be consistently different from our controls. In the present study, we examined polymorphisms and sequence variations in the exomes of the same transgenic soybean events. We found that the previously dissimilar soybean line also exhibited markedly increased levels of polymorphisms within mRNA transcripts from seed tissue, many of which are classified as gene expression modifiers...
2016: International Journal of Plant Genomics
https://www.readbyqxmd.com/read/27988416/energy-metabolism-and-metabolomics-response-of-pacific-white-shrimp-litopenaeus-vannamei-to-sulfide-toxicity
#13
Tongyu Li, Erchao Li, Yantong Suo, Zhixin Xu, Yongyi Jia, Jian G Qin, Liqiao Chen, Zhimin Gu
The toxicity and poisoning mechanisms of sulfide were studied in Litopenaeus vannamei from the perspective of energy metabolism and metabolomics. The lethal concentrations of sulfide in L. vannamei (LC50) at 24h, 48h, 72h, and 96h were determined. Sulfide at a concentration of 0, 1/10 (425.5μg/L), and 1/5 (851μg/L) of the LC50 at 96h was used to test the metabolic responses of L. vannamei for 21days. The chronic exposure of shrimp to a higher sulfide concentration of 851μg/L decreased shrimp survival but did not affect weight gain or the hepatopancreas index...
February 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/27988129/source-of-supplemental-dietary-copper-zinc-and-manganese-affects-fecal-microbial-relative-abundance-in-lactating-dairy-cows
#14
M J Faulkner, B A Wenner, L M Solden, W P Weiss
Appropriate trace mineral supplementation can improve immune response and hoof health in cattle and at much higher rates of supplementation to swine and poultry can alter microbial colonization of the gut, resulting in improved gut health. Diet can influence fecal microbial excretion in cattle, and the fecal microbiome may serve as a means for assessing gastrointestinal microbial changes. We hypothesized that feeding diets that differed in source of supplemental Cu, Zn, or Mn would alter the relative abundance of fecal microbes in lactating dairy cattle and that organic Zn would have the greatest effect...
February 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/27981593/determination-of-isoflavone-genistein-and-daidzein-concentration-of-soybean-seed-as-affected-by-environment-and-management-inputs
#15
Randy Laurenz, Pavani Tumbalam, Seth Naeve, Kurt D Thelen
BACKGROUND: Isoflavones, such as genistein and daidzein, are produced in soybean seed [Glycine max (L.) Merr.] and may be associated with health benefits in the human diet. More research is required to determine the effect of agronomic soybean treatments on isoflavone concentration. In this study from 2012 to 2014 at Michigan State University and Breckenridge locations, we have evaluated agronomic input management systems which are marketed to increase or protect potential soybean grain yield, including: nitrogen fertilization, herbicide-defoliant, foliar applied fertilizer, a biological-based foliar application, foliar applied fungicide, foliar applied insecticide, a seed applied fungicide, and a maximized seed treatment that included fungicide and insecticide as well as an inoculant and lipo-chitooligosaccharide nodulation promoter, for their effect on soybean seed genistein and daidzein concentrations...
December 16, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27966366/metabolic-phenotype-of-obesity-in-a-saudi-population
#16
Muhammad Saeed Ahmad, Munirah Alsaleh, Torben Kimhofer, Sultan Ahmad, Wisam Jamal, Siraj Omar Wali, Jeremy Kirk Nicholson, Zoheir Abdullah Damanhouri, Elaine Holmes
Metabolic phenotyping of obese populations can shed light on understanding environmental interactions underpinning obesogenesis. Obesity and its comorbidities are a major health and socioeconomic concern globally and are highly prevalent in the Middle East. We employed nuclear magnetic resonance spectroscopy to characterize the metabolic signature of urine and blood plasma for a cohort of obese (n = 50) compared to non-obese (n = 48) Saudi participants. The urinary metabolic phenotype of obesity was characterized by higher concentrations of N-acetyl glycoprotein fragments, bile acids, lysine, and methylamines and lower concentrations of tricarboxylic acid cycle intermediates, glycine, and gut microbial metabolites...
January 20, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/27907139/contribution-towards-a-metabolite-profile-of-the-detoxification-of-benzoic-acid-through-glycine-conjugation-an-intervention-study
#17
Cindy Irwin, Mari van Reenen, Shayne Mason, Lodewyk J Mienie, Johan A Westerhuis, Carolus J Reinecke
Benzoic acid is widely used as a preservative in food products and is detoxified in humans through glycine conjugation. Different viewpoints prevail on the physiological significance of the glycine conjugation reaction and concerns have been raised on potential public health consequences following uncontrolled benzoic acid ingestion. We performed a metabolomics study which used commercial benzoic acid containing flavored water as vehicle for designed interventions, and report here on the controlled consumption of the benzoic acid by 21 cases across 6 time points for a total of 126 time points...
2016: PloS One
https://www.readbyqxmd.com/read/27891122/membrane-active-epithelial-keratin-6a-fragments-kamps-are-unique-human-antimicrobial-peptides-with-a-non-%C3%AE-%C3%AE-structure
#18
Judy T Y Lee, Guangshun Wang, Yu Tong Tam, Connie Tam
Antibiotic resistance is a pressing global health problem that threatens millions of lives each year. Natural antimicrobial peptides and their synthetic derivatives, including peptoids and peptidomimetics, are promising candidates as novel antibiotics. Recently, the C-terminal glycine-rich fragments of human epithelial keratin 6A were found to have bactericidal and cytoprotective activities. Here, we used an improved 2-dimensional NMR method coupled with a new protocol for structural refinement by low temperature simulated annealing to characterize the solution structure of these kerain-derived antimicrobial peptides (KAMPs)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27881392/higher-serum-phenylalanine-concentration-is-associated-with-more-rapid-telomere-shortening-in-men
#19
Johan G Eriksson, Maria-Angela Guzzardi, Patricia Iozzo, Eero Kajantie, Hannu Kautiainen, Minna K Salonen
BACKGROUND: Telomere length and telomere shortening are associated with age-related health outcomes. Only a few studies have been able to longitudinally report on factors that are associated with changes in telomere length in an aging population. OBJECTIVE: We studied the longitudinal relation between telomere length, the change in telomere length, and circulating amino acids. DESIGN: A total of 812 subjects from the Helsinki Birth Cohort Study (born from 1934 to 1944), who underwent 3 clinical visits during a 10-y interval that included measurements of cardiometabolic risk factors, were included in the study...
November 23, 2016: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/27854256/natural-deep-eutectic-solvents-nades-as-a-tool-for-bioavailability-improvement-pharmacokinetics-of-rutin-dissolved-in-proline-glycine-after-oral-administration-in-rats-possible-application-in-nutraceuticals
#20
Marta Faggian, Stefania Sut, Beatrice Perissutti, Valeria Baldan, Iztok Grabnar, Stefano Dall'Acqua
There is a need for innovation in plant-derived pharmaceuticals, food supplements and nutraceutical products regarding the use of more eco-sustainable solvents for their extraction. Furthermore, the poor oral bioavailability of several phytochemicals with health promoting effects stimulates the research in the field of pharmaceutical formulations. Natural Deep Eutectic Solvents (NADES) are formed by natural compounds, and can be considered as future solvents being especially useful for the preparation of nutraceuticals and food-grade extracts...
November 14, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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