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https://www.readbyqxmd.com/read/28106712/very-low-protein-diet-vlpd-reduces-metabolic-acidosis-in-subjects-with-chronic-kidney-disease-the-nutritional-light-signal-of-the-renal-acid-load
#1
Biagio Raffaele Di Iorio, Lucia Di Micco, Stefania Marzocco, Emanuele De Simone, Antonietta De Blasio, Maria Luisa Sirico, Luca Nardone, On Behalf Of Ubi Study Group
BACKGROUND: Metabolic acidosis is a common complication of chronic kidney disease; current guidelines recommend treatment with alkali if bicarbonate levels are lower than 22 mMol/L. In fact, recent studies have shown that an early administration of alkali reduces progression of CKD. The aim of the study is to evaluate the effect of fruit and vegetables to reduce the acid load in CKD. METHODS: We conducted a case-control study in 146 patients who received sodium bicarbonate...
January 17, 2017: Nutrients
https://www.readbyqxmd.com/read/28105928/computer-aided-identification-of-a-hevein-like-antimicrobial-peptide-of-bell-pepper-leaves-for-biotechnological-use
#2
Patrícia Dias Games, Elói Quintas Gonçalves daSilva, Meire de Oliveira Barbosa, Hebréia Oliveira Almeida-Souza, Patrícia Pereira Fontes, Marcos Jorge deMagalhães-Jr, Paulo Roberto Gomes Pereira, Maura Vianna Prates, Gloria Regina Franco, Alessandra Faria-Campos, Sérgio Vale Aguiar Campos, Maria Cristina Baracat-Pereira
BACKGROUND: Antimicrobial peptides from plants present mechanisms of action that are different from those of conventional defense agents. They are under-explored but have a potential as commercial antimicrobials. Bell pepper leaves ('Magali R') are discarded after harvesting the fruit and are sources of bioactive peptides. This work reports the isolation by peptidomics tools, and the identification and partially characterization by computational tools of an antimicrobial peptide from bell pepper leaves, and evidences the usefulness of records and the in silico analysis for the study of plant peptides aiming biotechnological uses...
December 15, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28102930/modulation-of-the-thermodynamic-signatures-of-an-rna-thermometer-by-osmolytes-and-salts
#3
Mimi Gao, Loana Arns, Roland Winter
Folding of ribonucleic acids (RNAs) is driven by several factors, such as base pairing and stacking, chain entropy, and ion-mediated electrostatics, which have been studied in great detail. However, the power of background molecules in the cellular milieu is often neglected. Herein, we study the effect of common osmolytes on the folding equilibrium of a hairpin-structured RNA and, using pressure perturbation, provide novel thermodynamic and volumetric insights into the modulation mechanism. The presence of TMAO causes an increased thermal stability and a more positive volume change for the helix-to-coil transition, whereas urea destabilizes the hairpin and leads to an increased expansibility of the unfolded state...
January 19, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28098924/-hypernatremia-caused-by-treatment-with-ghb-obtained-via-a-doctor-s-prescription
#4
I M Rood, C G W Seijger, J A van Waarde, M M R de Maat, J C Verhave, M J Blans
In the last few years, gamma hydroxybutyric acid (GHB) has been used increasingly as a party drug; this has led to a marked increase in the number of requests for professional help with the treatment of GHB addiction. Pharmaceutical GHB (sodium oxybate, the sodium-salt of GHB), registered for cataplexia in narcolepsy patients, is used off-label to treat the withdrawal symptoms associated with GHB addiction. Pharmaceutical GHB has a high sodium load. In this report we present the cases of two patients who developed symptomatic hypernatremia following treatment with pharmaceutical GHB and who thereafter needed intensive care for the severe withdrawal symptoms that they experienced...
2017: Tijdschrift Voor Psychiatrie
https://www.readbyqxmd.com/read/28095810/neonatal-screening-for-congenital-adrenal-hyperplasia-in-southern-brazil-a-population-based-study-with-108-409-infants
#5
Cristiane Kopacek, Simone Martins de Castro, Mayara Jorgens Prado, Claudia Maria Dornelles da Silva, Luciana Amorim Beltrão, Poli Mara Spritzer
BACKGROUND: Congenital adrenal hyperplasia (CAH) is an autosomal recessive disorder associated with inborn errors of steroid metabolism. 21-hydroxylase enzyme deficiency occurs in 90 to 95% of all cases of CAH, with accumulation of 17 hydroxyprogesterone (17-OHP). Early diagnosis of CAH based on newborn screening is possible before the development of symptoms and allows proper treatment, correct sex assignment, and reduced mortality rates. This study describes the results obtained in the first year of a public CAH screening program in the state of Rio Grande do Sul, Brazil...
January 17, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28094153/development-and-validation-of-a-fast-ionic-liquid-based-dispersive-liquid-liquid-microextraction-procedure-combined-with-lc-ms-ms-analysis-for-the-quantification-of-benzodiazepines-and-benzodiazepine-like-hypnotics-in-whole-blood
#6
Marieke De Boeck, Sophie Missotten, Wim Dehaen, Jan Tytgat, Eva Cuypers
To date, thorough clean-up of complex biological samples remains an essential part of the analytical process. The solid phase extraction (SPE) technique is the well-known standard, however, its main weaknesses are the labor-intensive and time-consuming protocols. In this respect, dispersive liquid-liquid microextractions (DLLME) seem to offer less complex and more efficient extraction procedures. Furthermore, ionic liquids (ILs) - liquid salts - are emerging as new promising extraction solvents, thanks to their non-flammable nature, negligible vapor pressure and easily adaptable physiochemical properties...
December 26, 2016: Forensic Science International
https://www.readbyqxmd.com/read/28089704/brain-mineralocorticoid-receptor-function-in-control-of-salt-balance-and-stress-adaptation
#7
REVIEW
E Ronald de Kloet, Marian Joëls
We will highlight in honor of Randall Sakai the peculiar characteristics of the brain mineralocorticoid receptor (MR) in its response pattern to the classical mineralocorticoid aldosterone and the naturally occurring glucocorticoids corticosterone and cortisol. Neurons in the nucleus tractus solitarii (NTS) express MR, which mediate selectively the action of aldosterone on salt appetite, sympathetic outflow and volume regulation. The MR-containing NTS neurons innervate limbic-forebrain circuits enabling aldosterone to also modulate reciprocally arousal, motivation, fear and reward...
January 13, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28080323/oral-adenosine-5-triphosphate-atp-administration-increases-postexercise-atp-levels-muscle-excitability-and-athletic-performance-following-a-repeated-sprint-bout
#8
Martin Purpura, John A Rathmacher, Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jeremy M Partl, Jacob M Wilson, Ralf Jäger
OBJECTIVE: Oral adenosine-5'-triphosphate (ATP) administration has failed to increase plasma ATP levels; however, chronic supplementation with ATP has shown to increase power, strength, lean body mass, and blood flow in trained athletes. The purpose of this study was to investigate the effects of ATP supplementation on postexercise ATP levels and on muscle activation and excitability and power following a repeated sprint bout. METHODS: In a double-blind, placebo-controlled, randomized design, 42 healthy male individuals were given either 400 mg of ATP as disodium salt or placebo for 2 weeks prior to an exercise bout...
January 12, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28079352/the-way-forward-in-italy-for-iodine
#9
Antonella Olivieri, Caterina DI Cosmo, Simona DE Angelis, Roberto DA Cas, Paolo Stacchini, Augusto Pastorelli, Paolo Vitti
Italy is dealing with iodine deficiency since ancient times. Indeed, iodine deficiency disorders, specifically goiter and cretinism, have been reported in some regions of Northern Italy already in the first century AD. However, a clear relationship between endemic goiter and endemic cretinism was recognized only in 1848 by an "ad hoc" committee appointed by the king of Sardinia, which identified extensive areas afflicted by these disorders in Piedmont, Liguria and Sardinia. With the identification in the early 20th century of iodine deficiency as the cause of endemic goiter1 many epidemiological studies were conducted in Italy...
January 12, 2017: Minerva Medica
https://www.readbyqxmd.com/read/28067836/alkaloids-and-phenolic-compounds-from-sida-rhombifolia-l-malvaceae-and-vasorelaxant-activity-of-two-indoquinoline-alkaloids
#10
Otemberg Souza Chaves, Yanna Carolina Ferreira Teles, Matheus Morais de Oliveira Monteiro, Leônidas das Graças Mendes Junior, Maria de Fátima Agra, Valdir de Andrade Braga, Tânia Maria Sarmento Silva, Maria de Fátima Vanderlei de Souza
The follow-up of phytochemical and pharmacological studies of Sida rhombifolia L. (Malvaceae) aims to strengthen the chemosystematics and pharmacology of Sida genera and support the ethnopharmacological use of this species as hypotensive herb. The present work reports phytoconstituents isolated and identified from aerial parts of S. rhombifolia by using chromatographic and spectroscopic methods. The study led to the isolation of scopoletin (1), scoporone (2), ethoxy-ferulate (3), kaempferol (4), kaempferol-3-O-β-d-glycosyl-6''-α-d-rhamnose (5), quindolinone (6), 11-methoxy-quindoline (7), quindoline (8), and the cryptolepine salt (9)...
January 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28065787/intestinal-farnesoid-x-receptor-controls-transintestinal-cholesterol-excretion-in-mice
#11
Jan Freark de Boer, Marleen Schonewille, Marije Boesjes, Henk Wolters, Vincent W Bloks, Trijnie Bos, Theo H van Dijk, Angelika Jurdzinski, Renze Boverhof, Justina C Wolters, Jan A Kuivenhoven, Jan M van Deursen, Ronald P J Oude Elferink, Antonio Moschetta, Claus Kremoser, Henkjan J Verkade, Folkert Kuipers, Albert K Groen
BACKGROUND & AIMS: The role of the intestine in the maintenance of cholesterol homeostasis is increasingly recognized. Fecal excretion of cholesterol is the last step in the atheroprotective reverse cholesterol transport pathway, to which biliary and transintestinal cholesterol excretion (TICE) contribute. The mechanisms controlling the flux of cholesterol through the TICE pathway are, however, poorly understood. We aimed to identify mechanisms that regulate and stimulate TICE. METHODS: We performed studies with C57Bl/6J mice, as well as mice with intestine-specific knockout of the farnesoid X receptor (FXR), mice that express an FXR transgene specifically in the intestine, and ABCG8-knockout mice...
January 5, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28063203/simultaneous-au-iii-extraction-and-in-situ-formation-of-polymeric-membrane-supported-gold-nanoparticles-a-sustainable-process-with-application-in-catalysis
#12
Lucia Mora-Tamez, Vicente Esquivel-Peña, Ana Lilia Ocampo, Eduardo Rodríguez de San Miguel, Daniel Grande, Josefina de Gyves
A polymeric membrane-supported catalyst with immobilized gold nanoparticles (AuNPs) was prepared through the extraction and in-situ reduction of gold(III) salts in a one-step strategy. Polymeric inclusion membranes (PIMs) and polymeric nanoporous membranes (PNMs) were tested as different membrane support systems. Transport experiments indicated that PIMs composed of cellulose triacetate, 2-nitrophenyloctyl ether, and an aliphatic tertiary amine (Adogen® 364 or Alamine® 336) were the most efficient supports for Au(III) extraction...
January 7, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28056490/knockout-of-the-primary-sclerosing-cholangitis-risk-gene-fut2-causes-liver-disease-in-mice
#13
Luca Maroni, Simon D Hohenester, Stan F J van de Graaf, Dagmar Tolenaars, Krijn van Lienden, Joanne Verheij, Marco Marzioni, Tom H Karlsen, Ronald P J Oude Elferink, Ulrich Beuers
: The etiopathogenesis of primary sclerosing cholangitis (PSC) is unknown. Genetic variants of fucosyltransferase 2 (FUT2) have been identified in genome-wide association studies as risk factor for PSC. We investigated the role of Fut2 in murine liver pathophysiology by studying Fut2(-/-) mice. Fut2(-/-) mice were viable and fertile, had lower body weight than wild type (wt) littermates and grey fur, as described earlier. Half of the Fut2(-/-) mice showed serum bile salt levels 40 times higher than wt (Fut2(-/-)(high) ), whereas the remainder were normocholanemic (Fut2(-/-)(low) )...
January 5, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28054493/epilithic-and-endolithic-microorganisms-and-deterioration-on-stone-church-facades-subject-to-urban-pollution-in-a-sub-tropical-climate
#14
Christine Gaylarde, Jose Antônio Baptista-Neto, Akiko Ogawa, Matthew Kowalski, Sukriye Celikkol-Aydin, Iwona Beech
Weathering of two church facades in Rio de Janeiro was caused substantially by salts, mainly halite and gypsum, detected by SEM and chemical analyses, which cause physical stresses by deposition within the rock. Biofilm populations, determined by SEM and as operational taxonomic units (OTUs), degraded stone by penetration, solubilization and redeposition of minerals on their surfaces. Endolithic cyanobacteria were associated with gypsum deposits. Microbiomes were typical for high-stress environments, high salt, intense insolation, low water and low nutrients (eg halophilic Rubrobacter, Salinicola, Sterigmatomyces)...
January 5, 2017: Biofouling
https://www.readbyqxmd.com/read/28052887/impact-of-human-milk-pasteurization-on-gastric-digestion-in-preterm-infants-a-randomized-controlled-trial
#15
Samira C de Oliveira, Amandine Bellanger, Olivia Ménard, Patrick Pladys, Yann Le Gouar, Emelyne Dirson, Florian Kroell, Didier Dupont, Amélie Deglaire, Claire Bourlieu
BACKGROUND: Holder pasteurization has been reported to modify human milk composition and structure by inactivating bile salt-stimulated lipase (BSSL) and partially denaturing some of its proteins, potentially affecting its subsequent digestion. OBJECTIVE: We sought to determine the impact of human milk pasteurization on gastric digestion (particularly for proteins and lipids) in preterm infants who were fed their mothers' own milk either raw or pasteurized. DESIGN: In a randomized controlled trial, 12 hospitalized tube-fed preterm infants were their own control group in comparing the gastric digestion of raw human milk (RHM) with pasteurized human milk (PHM)...
January 4, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28045539/influence-of-surface-charge-density-and-morphology-on-the-formation-of-polyelectrolyte-multilayers-on-smooth-charged-cellulose-surfaces
#16
Tobias Benselfelt, Torbjörn Pettersson, Lars Wågberg
To clarify the importance of the surface charge for the formation of polyelectrolyte multilayers, layer-by-layer (LbL) assemblies of polydiallyldimethylammonium chloride (pDADMAC) and polystyrenesulfonate (PSS) have been investigated on cellulose films with different carboxylic acid contents (20, 350, 870, and 1200 μmol/g) regenerated from oxidized cellulose. The wet cellulose films were thoroughly characterized prior to multilayer deposition using quantitative nanomechanical mapping (QNM), which showed that the mechanical properties were greatly affected by the degree of oxidation of the cellulose...
January 13, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28042099/analgesic-and-anti-inflammatory-controlled-released-injectable-microemulsion-pseudo-ternary-phase-diagrams-in-vitro-ex-vivo-and-in-vivo-evaluation
#17
Isabel Pineros, Karla Slowing, Dolores R Serrano, Esther de Pablo, Maria Paloma Ballesteros
PURPOSE: Development of analgesic and anti-inflammatory controlled-released injectable microemulsions utilising lysine clonixinate (LC) as model drug and generally regarded as safe (GRAS) excipients. METHODS: Different microemulsions were optimised through pseudo-ternary phase diagrams and characterised measuring droplet size, viscosity, ex vivo haemolytic activity and in vitro drug release. The anti-inflammatory and analgesic activity was tested in mice (Hot plate test) and rats (Carrageenan-induced paw edema test) respectively and their activity was compared to an aqueous solution of LC salt...
December 29, 2016: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28035767/oxygenic-and-anoxygenic-photosynthesis-in-a-microbial-mat-from-an-anoxic-and-sulfidic-spring
#18
Dirk de Beer, Miriam Weber, Arjun Chennu, Trinity Hamilton, Christian Lott, Jennifer Macalady, Judith Klatt
Oxygenic and anoxygenic photosynthesis were studied with microsensors in microbial mats found at 9-10 m depth in anoxic and sulfidic water in Little Salt Spring (Florida, USA). The lake sediments were covered with a 1-2 mm thick red mat dominated by filamentous Cyanobacteria, below which Green Sulfur Bacteria (GSB, Chlorobiaceae) were highly abundant. Within 4 mm inside the mats, the incident radiation was attenuated to undetectable levels. In situ microsensor data showed both oxygenic photosynthesis in the red surface layer and light-induced sulfide dynamics up to 1 cm depth...
December 30, 2016: Environmental Microbiology
https://www.readbyqxmd.com/read/28034986/influence-of-sexual-hormones-on-neural-orofacial-perception
#19
Bruna Alves, Flavia Ibuki, Alyne Simões Gonçalves, Manoel Jacobsen Teixeira, Silvia Regina Dowgan Tesseroli De Siqueira
OBJECTIVE  : To investigate the trigeminal somatosensory (thermal, pain, tactile, vibratory, and electric), gustative (salty, bitter, sweet, sour), and olfactory thresholds in healthy women during the menstrual cycle and investigate any association with estradiol and progesterone levels in saliva. METHODS : We examined/tested 39 women between age 19 and 47 years and with regular menstrual cycles and no comorbidities. All women were informed about the purposes of the study, and only those who signed the informed consent were included...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28033404/plasmodium-falciparum-nucleosomes-exhibit-reduced-stability-and-lost-sequence-dependent-nucleosome-positioning
#20
Elisabeth Silberhorn, Uwe Schwartz, Patrick Löffler, Samuel Schmitz, Anne Symelka, Tania de Koning-Ward, Rainer Merkl, Gernot Längst
The packaging and organization of genomic DNA into chromatin represents an additional regulatory layer of gene expression, with specific nucleosome positions that restrict the accessibility of regulatory DNA elements. The mechanisms that position nucleosomes in vivo are thought to depend on the biophysical properties of the histones, sequence patterns, like phased di-nucleotide repeats and the architecture of the histone octamer that folds DNA in 1.65 tight turns. Comparative studies of human and P. falciparum histones reveal that the latter have a strongly reduced ability to recognize internal sequence dependent nucleosome positioning signals...
December 2016: PLoS Pathogens
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