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Acid base disturbance

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https://www.readbyqxmd.com/read/29046378/fluctuating-seawater-ph-pco2-regimes-are-more-energetically-expensive-than-static-ph-pco2-levels-in-the-mussel-mytilus-edulis
#1
Stephanie Mangan, Mauricio A Urbina, Helen S Findlay, Rod W Wilson, Ceri Lewis
Ocean acidification (OA) studies typically use stable open-ocean pH or CO2 values. However, species living within dynamic coastal environments can naturally experience wide fluctuations in abiotic factors, suggesting their responses to stable pH conditions may not be reflective of either present or near-future conditions. Here we investigate the physiological responses of the mussel Mytilus edulis to variable seawater pH conditions over short- (6 h) and medium-term (2 weeks) exposures under both current and near-future OA scenarios...
October 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29031352/disturbances-in-acid-base-potassium-and-sodium-balance-in-patients-with-ckd-new-insights-and-novel-therapies
#2
EDITORIAL
Jeffrey A Kraut
No abstract text is available yet for this article.
September 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29030727/-parenteral-nutrition-in-premature-babies-with-a-birth-weight-1500g-a%C3%A2-systematic-single-center-analysis-and-comparison-with-current-guidelines
#3
Melanie Sirch, Martin Poryo, Mona Butte, Ulrike Lindner, Ludwig Gortner, Michael Zemlin, Holger Nunold, Sascha Meyer
BACKGROUND: Parenteral and enteral nutrition are essential for both growth and development of preterm infants. Based on the results of many studies, the rate of nutritional growth and the amount of substrate delivered parenterally are under debate. OBJECTIVE: The main aim of this study was to assess parenteral nutrition in very and extremely immature preterm infants, i.e. very low birth weight (VLBW, birth weight <1500g) and extremely low birth weight (ELBW, birth weight <1000g) neonates, and to compare the amount of parenterally delivered substrate in our neonatal intensive care unit (NICU) to current German guidelines...
October 13, 2017: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29027374/flow-cytometric-monitoring-of-bacterioplankton-phenotypic-diversity-predicts-high-population-specific-feeding-rates-by-invasive-dreissenid-mussels
#4
Ruben Props, Marian L Schmidt, Jasmine Heyse, Henry A Vanderploeg, Nico Boon, Vincent J Denef
Species invasion is an important disturbance to ecosystems worldwide, yet knowledge about the impacts of invasive species on bacterial communities remains sparse. Using a novel approach, we simultaneously detected phenotypic and derived taxonomic change in a natural bacterioplankton community when subjected to feeding pressure by quagga mussels, a widespread aquatic invasive species. We detected a significant decrease in diversity within one hour of feeding, and a total diversity loss of 11.6 ± 4.1 % after 3h...
October 13, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/29022831/nuclear-magnetic-resonance-assisted-metabolic-analysis-of-plasma-for-mild-gestational-diabetes-mellitus-patients
#5
Bai Jin, Liping Liu, Shuxuan Zhang, Xiaohui Cao, Yuhong Xu, Junsong Wang, Lizhou Sun
AIMS: This study aimed at detecting the difference of metabolic profile in mild gestational diabetes mellitus (GDM) patients, and at identifying the correlation between the disturbed metabolites and insulin resistance pathway induced by the inflammation factors secreted by the placenta and adipocytes. MATERIALS AND METHODS: Blood samples were collected from 36 pregnant women diagnosed with mild GDM and 36 normal glucose-tolerant (NGT) pregnant women. Metabolic profiles were acquired by using proton nuclear magnetic resonance ((1)H-NMR) spectroscopy, and the data were analyzed by multivariate statistical data analysis...
October 12, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28984162/acid-base-regulation-and-sensing-accelerators-and-brakes-in-metabolic-regulation-of-cerebrovascular-tone
#6
Ebbe Boedtkjer
Metabolic regulation of cerebrovascular tone directs blood flow to areas of increased neuronal activity and during disease states partially compensates for insufficient perfusion by enhancing blood flow in collateral blood vessels. Acid-base disturbances frequently occur as result of enhanced metabolism or insufficient blood supply, but despite definitive evidence that acid-base disturbances alter arterial tone, effects of individual acid-base equivalents and the underlying signaling mechanisms are still being debated...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28980720/structural-insights-into-impact-of-y134f-mutation-and-discovery-of-novel-fungicidal-compounds-against-cyp51-in-puccinia-triticina
#7
Bharati Pandey, Pradeep Sharma
Sterol 14α-Demethylase Cytochrome P450 (CYP51) protein involved in ergosterol biosynthesis pathways turn out to be a crucial target for the fungicidal compound. However, the recognition mechanism and dynamic behavior of CYP51 in wheat leaf rust pathogen, Puccinia triticina, is still obscure. Previously, a mutation at position 134 (Y134F) was reported in five European isolates of P. triticina, conversely, structural basis of this mutation remains unclear. To address this problem, CYP51 protein from P. triticina was successfully built using homology modeling approach...
October 5, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28971536/chronic-exposure-of-a-freshwater-mussel-to-elevated-pco2-effects-on-the-control-of-biomineralization-and-ion-regulatory-responses
#8
Jennifer D Jeffrey, Kelly D Hannan, Caleb T Hasler, Cory D Suski
Freshwater mussels may be exposed to elevations in pCO2 due to both natural and anthropogenic factors. The goal of the present study was to assess the effects of a 28-d elevation in pCO2 , at 15,000 and 50,000 µatm, on processes associated with biomineralization, ion regulation, and cellular stress in adult Lampsilis siliquoidea (Barnes, 1823). In addition, the capacity for mussels to compensate for acid-base disturbances experienced following exposure to elevated pCO2 was assessed over a 14-d recovery period...
October 2, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28960717/retrospective-evaluation-of-155-adult-equids-and-21-foals-with-tetanus-in-western-northern-and-central-europe-2000-2014-part-1-description-of-history-and-clinical-evolution
#9
Gaby van Galen, Claude Saegerman, Joke Rijckaert, Helene Amory, Lara Armengou, Barbora Bezdekova, Inge Durie, Rikke Findshøj Delany, Nathalie Fouché, Laura Haley, Michael Hewetson, Rene van den Hoven, Anna Kendall, Fernando Malalana, Jessika Muller Cavalleri, Tresemiek Picavet, Katja Roscher, Denis Verwilghen, Meret Wehrli Eser, Cornélie Westermann, Tim Mair
OBJECTIVE: To describe clinical data of hospitalized adult equids and foals with tetanus. DESIGN: Multicenter retrospective study (2000-2014). SETTING: Twenty Western, Northern, and Central European university teaching hospitals and private referral centers. ANIMALS: One hundred fifty-five adult equids (>6 months) and 21 foals (<6 months) with tetanus. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Information on geographic, annual and seasonal data, demographic- and management-related data, clinical history, clinical examination and blood analysis on admission, complications, treatments, and outcomes were described and statistically compared between adults and foals...
September 28, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28941714/intravenous-injection-of-unfunctionalized-carbon-based-nanomaterials-confirms-the-minimal-toxicity-observed-in-aqueous-and-dietary-exposures-in-juvenile-rainbow-trout-oncorhynchus-mykiss
#10
David Boyle, Paul A Sutton, Richard D Handy, Theodore B Henry
Numerous ecotoxicology studies of carbon-based nanomaterials (CNMs) have been conducted in fishes; however, different approaches have been used to make CNM dispersions and dose tanks for aqueous exposures, and to prepare food containing CNMs for dietary studies. This diversity of experimental methods has led to conflicting results and difficulties in comparing studies. The objective of the present study was to evaluate intravenous injection of unfunctionalized CNMs in rainbow trout (Oncorhynchus mykiss), as a means of delivering a known internal dose, on tissue biochemistry and histopathological lesions; then, subsequently, to compare the results with our previous work on aqueous and dietary exposures of rainbow trout to CNMs...
September 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28940012/proteomic-analysis-of-the-soil-filamentous-fungus-aspergillus-nidulans-exposed-to-a-roundup-formulation-at-a-dose-causing-no-macroscopic-effect-a-functional-study
#11
Florence Poirier, Céline Boursier, Robin Mesnage, Nathalie Oestreicher, Valérie Nicolas, Christian Vélot
Roundup® is a glyphosate-based herbicide (GBH) used worldwide both in agriculture and private gardens. Thus, it constitutes a substantial source of environmental contaminations, especially for water and soil, and may impact a number of non-target organisms essential for ecosystem balance. The soil filamentous fungus Aspergillus nidulans has been shown to be highly affected by a commercial formulation of Roundup® (R450), containing 450 g/L of glyphosate (GLY), at doses far below recommended agricultural application rate...
September 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28936406/gut-microbiome-based-therapeutics-in-liver-cirrhosis-basic-consideration-for-the-next-step
#12
REVIEW
Hiroshi Fukui
Infections account for significant morbidity and mortality in liver cirrhosis and most are related to the gut microbiome. Fecal dysbiosis, characterized by an overgrowth of potentially pathogenic bacteria and a decrease in autochthonous non-pathogenic bacteria, becomes prominent with the progression of liver cirrhosis. In cirrhotic patients, disruption of the intestinal barrier causes intestinal hyperpermeability (i.e. leaky gut), which is closely related to gut dysmotility, dysbiosis and small intestinal bacterial overgrowth and may induce pathological bacterial translocation...
September 28, 2017: Journal of Clinical and Translational Hepatology
https://www.readbyqxmd.com/read/28928980/common-yet-elusive-a-case-of-severe-anion-gap-acidosis
#13
Akanksha Agrawal, Marina Kishlyansky, Sylvia Biso, Soumya Patnaik, Chitra Punjabi
Acid-base disturbances are common occurrence in hospitalized patients with life threatening complications. 5-oxoproline has been increasingly recognized as cause of high anion gap metabolic acidosis (AGMA) in association with chronic acetaminophen use. However, laboratory workup for it are not widely available. We report case of 56-year-old female with severe AGMA not attributable to ketoacidosis, lactic acidosis or toxic ingestion. History was significant for chronic acetaminophen use, and laboratory workup negative for all frequent causes of AGMA...
September 2017: Oxford Medical Case Reports
https://www.readbyqxmd.com/read/28928660/-1-h-nmr-based-metabolomics-study-of-the-toxicological-effects-in-rats-induced-by-renqing-mangjue-pill-a-traditional-tibetan-medicine
#14
Can Xu, Caidan Rezeng, Jian Li, Lan Zhang, Yujing Yan, Jian Gao, Yingfeng Wang, Zhongfeng Li, Jianxin Chen
"RenqingMangjue" pill (RMP), as an effective prescription of Traditional Tibetan Medicine (TTM), has been widely used in treating digestive diseases and ulcerative colitis for over a thousand years. In certain classical Tibetan Medicine, heavy metal may add as an active ingredient, but it may cause contamination unintentionally in some cases. Therefore, the toxicity and adverse effects of TTM became to draw public attention. In this study, 48 male Wistar rats were orally administrated with different dosages of RMP once a day for 15 consecutive days, then half of the rats were euthanized on the 15th day and the remaining were euthanized on the 30th day...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28925944/interference-of-paraben-compounds-with-estrogen-metabolism-by-inhibition-of-17%C3%AE-hydroxysteroid-dehydrogenases
#15
Roger T Engeli, Simona R Rohrer, Anna Vuorinen, Sonja Herdlinger, Teresa Kaserer, Susanne Leugger, Daniela Schuster, Alex Odermatt
Parabens are effective preservatives widely used in cosmetic products and processed food, with high human exposure. Recent evidence suggests that parabens exert estrogenic effects. This work investigated the potential interference of parabens with the estrogen-activating enzyme 17β-hydroxysteroid dehydrogenase (17β-HSD) 1 and the estrogen-inactivating 17β-HSD2. A ligand-based 17β-HSD2 pharmacophore model was applied to screen a cosmetic chemicals database, followed by in vitro testing of selected paraben compounds for inhibition of 17β-HSD1 and 17β-HSD2 activities...
September 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28915534/revealing-anti-inflammation-mechanism-of-water-extract-and-oil-of-forsythiae-fructus-on-carrageenan-induced-edema-rats-by-serum-metabolomics
#16
An Yuan, Lihong Gong, Lin Luo, Jue Dang, Xiaohong Gong, Mengjie Zhao, Yan Li, Yunxia Li, Cheng Peng
Forsythiae Fructus is an important Chinese medicine which shows a significant effect against inflammation. This study aimed to investigate the preventive anti-inflammation mechanism of Forsythiae Fructus by serum metabolomics strategy and compare the difference of the metabolism pathways between Forsythia extract and Forsythia oil in rat. Four groups (control group, model group, Forsythia extract group and Forsythia oil group) were orally administered 10mL/kg 0.5% Tween 80 solution, 10mL/kg 0.5% Tween 80 solution, 5g/kg Forsythia extract and 0...
September 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28914359/changes-in-acid-base-and-ion-balance-during-exercise-in-normoxia-and-normobaric-hypoxia
#17
Olaf Lühker, Marc Moritz Berger, Alexander Pohlmann, Lorenz Hotz, Tilmann Gruhlke, Marcel Hochreiter
PURPOSE: Both exercise and hypoxia cause complex changes in acid-base homeostasis. The aim of the present study was to investigate whether during intense physical exercise in normoxia and hypoxia, the modified physicochemical approach offers a better understanding of the changes in acid-base homeostasis than the traditional Henderson-Hasselbalch approach. METHODS: In this prospective, randomized, crossover trial, 19 healthy males completed an exercise test until voluntary fatigue on a bicycle ergometer on two different study days, once during normoxia and once during normobaric hypoxia (12% oxygen, equivalent to an altitude of 4500 m)...
November 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28912717/global-metabolomics-reveals-the-metabolic-dysfunction-in-ox-ldl-induced-macrophage-derived-foam-cells
#18
Wenjuan Xu, Ziyi Wei, Jiaojiao Dong, Feipeng Duan, Kuikui Chen, Chang Chen, Jie Liu, Xiaowei Yang, Lianming Chen, Hongbin Xiao, An Liu
Atherosclerosis (AS) is a chronic disorder of large arteries that is a major risk factors of high morbidity and mortality. Oxidative modification LDL is one of the important contributors to atherogenesis. Macrophages take up ox-LDL and convert into foam cells, which is the hallmark of AS. To advance the understanding of the metabolic perturbation involved in ox-LDL induced macrophage-derived foam cells and discover the potential biomarkers of early AS, a global metabolomics approach was applied based on UHPLC-QTOF/MS...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28904431/role-of-gut-derived-uremic-toxins-on-oxidative-stress-and-inflammation-in-patients-with-chronic-kidney-disease
#19
S Gouroju, P V L N Srinivasa Rao, A R Bitla, K S Vinapamula, S M Manohar, S Vishnubhotla
Several cardiovascular disease (CVD) risk factors have been identified among patients with chronic kidney disease (CKD). Gut-derived uremic toxins (GDUT) are important modifiable contributors in this respect. There are very few Indian studies on GDUT changes in CKD. One hundred and twenty patients older than 18 years diagnosed with CKD were enrolled along with forty healthy subjects. The patients were classified into three groups of forty patients based on stage of CKD. Indoxyl sulfate (IS), para cresyl sulfate (p-CS), indole acetic acid (IAA), and phenol were estimated along with the assessment of oxidative stress (OS), inflammatory state, and bone mineral disturbance...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28894598/mechanical-behavior-of-polymer-based-vs-metallic-based-bioresorbable-stents
#20
REVIEW
Hui Ying Ang, Ying Ying Huang, Soo Teik Lim, Philip Wong, Michael Joner, Nicolas Foin
Bioresorbable scaffolds (BRS) were developed to overcome the drawbacks of current metallic drug-eluting stents (DES), such as late in-stent restenosis and caging of the vessel permanently. The concept of the BRS is to provide transient support to the vessel during healing before being degraded and resorbed by the body, freeing the vessel and restoring vasomotion. The mechanical properties of the BRS are influenced by the choice of the material and processing methods. Due to insufficient radial strength of the bioresorbable material, BRS often required large strut profile as compared to conventional metallic DES...
August 2017: Journal of Thoracic Disease
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