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Lactate AND Bicarbonate

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https://www.readbyqxmd.com/read/28738416/conditionally-immortal-slc4a11-mouse-corneal-endothelial-cell-line-recapitulates-disrupted-glutaminolysis-seen-in-slc4a11-mouse-model
#1
Wenlin Zhang, Diego G Ogando, Edward T Kim, Moon-Jung Choi, Hongde Li, Jason M Tenessen, Joseph A Bonanno
Purpose: To establish conditionally immortal mouse corneal endothelial cell lines with genetically matched Slc4a11+/+ and Slc4a11-/- mice as a model for investigating pathology and therapies for SLC4A11 associated congenital hereditary endothelial dystrophy (CHED) and Fuchs' endothelial corneal dystrophy. Methods: We intercrossed H-2Kb-tsA58 mice (Immortomouse) expressing an IFN-γ dependent and temperature-sensitive mutant of the SV40 large T antigen (tsTAg) with Slc4a11+/+ and Slc4a11-/- C57BL/6 mice...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28727025/effect-of-handling-intensity-at-the-time-of-transport-for-slaughter-on-physiological-response-and-carcass-characteristics-in-beef-cattle-fed-ractopamine-hydrochloride
#2
J A Hagenmaier, C D Reinhardt, S J Bartle, J N Henningson, M J Ritter, M S Calvo-Lorenzo, G J Vogel, C A Guthrie, M G Siemens, D U Thomson
The effects of handling intensity on the physiological response and carcass characteristics of feedlot cattle fed ractopamine hydrochloride were evaluated at the time of transport to slaughter. Eighty steers (BW = 668 ± 36 kg) representing 10 lots of similar breed, frame size, and degree of finish were blocked by lot, stratified by weight, and randomly assigned to 1 of 2 handling intensities (HI) over a 1,600 m dirt alley course: 1) low-stress handling (LSH) or 2) high-stress handling (HSH). For the LSH treatment, 4 penmates were kept at a walk with the use of a lead rider...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28711257/seasonal-and-maternal-effects-on-acid-base-l-lactate-electrolyte-and-hematological-status-of-205-dairy-calves-born-to-eutocic-dams
#3
L Kovács, F L Kézér, E Albert, F Ruff, O Szenci
In this study, we used linear mixed models to determine the effects of season, time of sampling relative to birth (factors), duration of the delivery process, duration of maternal grooming, calf body weight (BW) at birth, and time of day (covariates) on values of venous blood gas, acid-base and electrolyte parameters, and l-lactate concentrations in dairy calves born to eutocic dams in summer (SUM, n = 101) and winter (WIN, n = 104). Neonatal vitality was assessed at 0, 1, and 24 h after delivery in a linear scoring system using muscle tone, erection of the head, muscle reflexes, heart rate, and sucking drive as criteria...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28708304/hyperpolarized-13-c-magnetic-resonance-evaluation-of-renal-ischemia-reperfusion-injury-in-a-murine-model
#4
Celine Baligand, Hecong Qin, Aisha True-Yasaki, Jeremy W Gordon, Cornelius von Morze, Justin Delos Santos, David M Wilson, Robert Raffai, Patrick M Cowley, Anthony J Baker, John Kurhanewicz, David H Lovett, Zhen Jane Wang
Acute kidney injury (AKI) is a major risk factor for the development of chronic kidney disease (CKD). Persistent oxidative stress and mitochondrial dysfunction are implicated across diverse forms of AKI and in the transition to CKD. In this study, we applied hyperpolarized (HP) (13) C dehydroascorbate (DHA) and (13) C pyruvate magnetic resonance spectroscopy (MRS) to investigate the renal redox capacity and mitochondrial pyruvate dehydrogenase (PDH) activity, respectively, in a murine model of AKI at baseline and 7 days after unilateral ischemia reperfusion injury (IRI)...
July 14, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28659585/evidence-for-rapid-oxidative-phosphorylation-and-lactate-fermentation-in-motile-human-sperm-by-hyperpolarized-13-c-magnetic-resonance-spectroscopy
#5
Steven Reynolds, Nurul Fadhlina Bt Ismail, Sarah J Calvert, Allan A Pacey, Martyn N J Paley
Poor sperm motility is a common cause of male infertility for which there are no empirical therapies. Sperm motility is powered by adenosine triphosphate but the relative importance of lactate fermentation and Oxidative Phosphorylation (OxPhos) is debated. To study the relationship between energy metabolism and sperm motility we used dissolution Dynamic Nuclear Polarization (dDNP) for the first time to show the rapid conversion of (13)C1-pyruvate to lactate and bicarbonate, indicating active glycolytic and OxPhos metabolism in sperm...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28587493/a-randomized-controlled-trial-of-a-new-treatment-for-labor-dystocia
#6
Eva Wiberg-Itzel, Susan Wray, Helena Åkerud
OBJECTIVE: Labor dystocia is an intransigent, high-profile issue in obstetric care. Amniotic fluid lactate (AFL) reflects the uterine metabolic status. High levels associate with subsequent need for operative intervention due to dystocia. In sports medicine, it is known that lactic acid can affect muscular performance and can be decreased by bicarbonate given orally before physical activity. MATERIAL AND METHODS: Two hundred dystocic deliveries were included. At the confirmation of dystocia, the AFL-level was analyzed...
June 22, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28574225/three-stream-bicarbonate-based-hemodialysis-solution-delivery-system-revisited-with-an-emphasis-on-some-aspects-of-acid-base-principles
#7
REVIEW
Susie Q Lew, Orly F Kohn, Yuk-Lun Cheng, Carl M Kjellstrand, Todd S Ing
Hemodialysis patients can acquire buffer base (i.e., bicarbonate and buffer base equivalents of certain organic anions) from the acid and base concentrates of a three-stream, dual-concentrate, bicarbonate-based, dialysis solution delivery machine. The differences between dialysis fluid concentrate systems containing acetic acid versus sodium diacetate in the amount of potential buffering power were reviewed. Any organic anion such as acetate, citrate, or lactate (unless when combined with hydrogen) delivered to the body has the potential of being converted to bicarbonate...
June 2017: Artificial Organs
https://www.readbyqxmd.com/read/28553873/does-fluid-resuscitation-with-balanced-solutions-induce-electrolyte-and-metabolic-abnormalities-an-in-vitro-assessment
#8
Łukasz J Krzych, Piotr F Czempik
BACKGROUND: Popular intravenous fluids in clinical use may have impact on electrolyte concentration and metabolic balance and should be considered as powerful pharmacologic agents. There is growing body of evidence that fluid therapy should be more individualized and preferably based on balanced solutions. AIM: We sought to investigate impact of three commonly used balanced fluids on electrolytes and metabolic equilibrium in an in vitro setting. METHODS: Study group comprised 32 healthy male volunteers (no history of any acute/chronic disorder or known metabolic abnormalities), aged 21-35 (29 ± 4) years, weighting 59-103 (81...
May 29, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28530505/ingestion-of-sodium-bicarbonate-nahco3-following-a-fatiguing-bout-of-exercise-accelerates-post-exercise-acid-base-balance-recovery-and-improves-subsequent-high-intensity-cycling-time-to-exhaustion
#9
Lewis A Gough, Steven Rimmer, Callum J Osler, Matthew F Higgins
This study evaluated the ingestion of sodium bicarbonate (NaHCO3) on post-exercise acid-base balance recovery kinetics and subsequent high-intensity cycling time to exhaustion. In a counterbalanced, crossover design, nine healthy and active males (age: 23±2 years, height: 179±5 cm, body mass: 74±9 kg, peak mean minute power (WPEAK) 256±45 W, peak oxygen uptake (V̇O2PEAK) 46±8 ml.kg(-1).min(-1)) performed a graded incremental exercise test, two familiarisation and two experimental trials. Experimental trials consisted of cycling to volitional exhaustion (TLIM1) at 100% WPEAK on two occasions (TLIM1 and TLIM2) interspersed by a 90 min passive recovery period...
May 22, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28529153/model-of-vascular-desmoplastic-multispecies-tumor-growth
#10
Chin F Ng, Hermann B Frieboes
We present a three-dimensional nonlinear tumor growth model composed of heterogeneous cell types in a multicomponent-multispecies system, including viable, dead, healthy host, and extra-cellular matrix (ECM) tissue species. The model includes the capability for abnormal ECM dynamics noted in tumor development, as exemplified by pancreatic ductal adenocarcinoma, including dense desmoplasia typically characterized by a significant increase of interstitial connective tissue. An elastic energy is implemented to provide elasticity to the connective tissue...
May 18, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28526086/comparison-of-fluid-balance-and-hemodynamic-and-metabolic-effects-of-sodium-lactate-versus-sodium-bicarbonate-versus-0-9-nacl-in-porcine-endotoxic-shock-a-randomized-open-label-controlled-study
#11
Thibault Duburcq, Arthur Durand, Anne-Frédérique Dessein, Joseph Vamecq, Jean-Claude Vienne, Dries Dobbelaere, Karine Mention, Claire Douillard, Patrice Maboudou, Valery Gmyr, François Pattou, Mercé Jourdain, Fabienne Tamion, Julien Poissy, Daniel Mathieu, Raphaël Favory
BACKGROUND: Sodium lactate has been shown to improve hemodynamics and avoid fluid overload. The objective of this study was to confirm a beneficial effect on fluid balance with sodium lactate infusion and to specify whether the advantage of lactate is related to a negative chloride balance, its particular metabolism, or simply its energy load. METHODS: This was an interventional, randomized, open-label, controlled experimental study. Fifteen female "large white" pigs (2 months old) were challenged with intravenous infusion of Escherichia coli endotoxin...
May 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28521061/extracellular-camp-activates-molecular-signalling-pathways-associated-with-sperm-capacitation-in-bovines
#12
Carlos Agustín I Alonso, Claudia E Osycka-Salut, Luciana Castellano, Andreína Cesari, Nicolás Di Siervi, Adrián Mutto, Anders Johannisson, Jane M Morrell, Carlos Davio, Silvina Perez-Martinez
STUDY QUESTION: Is extracellular cAMP involved in the regulation of signalling pathways in bovine sperm capacitation? SUMMARY ANSWER: Extracellular cAMP-induced sperm capacitation through the activation of different signalling pathways that involve phospholipase C (PLC), PKC/ERK1-2 signalling and an increase in sperm Ca2+ levels, as well as soluble AC and cAMP/protein kinase A (PKA) signalling. WHAT IS KNOWN ALREADY: In order to fertilize the oocyte, ejaculated spermatozoa must undergo a series of changes in the female reproductive tract, known as capacitation...
May 18, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/28513767/capnography-as-a-tool-to-detect-metabolic-changes-in-patients-cared-for-in-the-emergency-setting
#13
Francisco José Cereceda-Sánchez, Jesús Molina-Mula
Objective: to evaluate the usefulness of capnography for the detection of metabolic changes in spontaneous breathing patients, in the emergency and intensive care settings. Methods: in-depth and structured bibliographical search in the databases EBSCOhost, Virtual Health Library, PubMed, Cochrane Library, among others, identifying studies that assessed the relationship between capnography values and the variables involved in blood acid-base balance. Results: 19 studies were found, two were reviews and 17 were observational studies...
May 15, 2017: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/28507314/metabolic-imaging-of-energy-metabolism-in-traumatic-brain-injury-using-hyperpolarized-1-13-c-pyruvate
#14
Stephen J DeVience, Xin Lu, Julie Proctor, Parisa Rangghran, Elias R Melhem, Rao Gullapalli, Gary M Fiskum, Dirk Mayer
Traumatic brain injury (TBI) is known to cause perturbations in the energy metabolism of the brain, but current tests of metabolic activity are only indirect markers of energy use or are highly invasive. Here we show that hyperpolarized (13)C magnetic resonance spectroscopic imaging (MRSI) can be used as a direct, non-invasive method for studying the effects of TBI on energy metabolism. Measurements were performed on rats with moderate TBI induced by controlled cortical impact on one cerebral hemisphere. Following injection of hyperpolarized [1-(13)C]pyruvate, the resulting (13)C-bicarbonate signal was found to be 24 ± 6% lower in the injured hemisphere compared with the non-injured hemisphere, while the hyperpolarized bicarbonate-to-lactate ratio was 33 ± 8% lower in the injured hemisphere...
May 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28501489/hydroxyethyl-starch-130-0-4-compared-with-0-9-nacl-administered-to-greyhounds-with-haemorrhagic-shock
#15
Duana McBride, Anthea L Raisis, Giselle Hosgood, Lisa Smart
OBJECTIVE: To determine the cardiovascular and acid-base effects of 6% hydroxyethyl starch (HES) 130/0.4 and 0.9% sodium chloride (NaCl) administered to anaesthetized greyhounds with haemorrhagic shock. STUDY DESIGN: Prospective, experimental, complete randomized block design. ANIMALS: Twelve healthy adult greyhounds. METHODS: After 60 minutes of isoflurane anaesthesia, 48 mL kg(-1) of blood was removed to induce hypotension...
March 6, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28497116/ph-mediated-microbial-and-metabolic-interactions-in-fecal-enrichment-cultures
#16
Zehra Esra Ilhan, Andrew K Marcus, Dae-Wook Kang, Bruce E Rittmann, Rosa Krajmalnik-Brown
pH and fermentable substrates impose selective pressures on gut microbial communities and their metabolisms. We evaluated the relative contributions of pH, alkalinity, and substrate on microbial community structure, metabolism, and functional interactions using triplicate batch cultures started from fecal slurry and incubated with an initial pH of 6.0, 6.5, or 6.9 and 10 mM glucose, fructose, or cellobiose as the carbon substrate. We analyzed 16S rRNA gene sequences and fermentation products. Microbial diversity was driven by both pH and substrate type...
May 2017: MSphere
https://www.readbyqxmd.com/read/28489457/adverse-events-associated-with-a-large-dose-of-intravenous-lipid-emulsion-for-suspected-local-anesthetic-toxicity
#17
Daniel J Corwin, Alexis Topjian, Brenda L Banwell, Kevin Osterhoudt
BACKGROUND: Intravenous lipid emulsion (ILE) has gained favor as a rescue treatment for cardiovascular collapse due to intravenous local anesthetic overdose, however, goals of ILE therapy are still being defined. We describe a case of a girl given 66 mL/kg of 20% lipid emulsion (ILE) in the treatment of presumed mepivacaine toxicity. CASE REPORT: An 11-year-old girl weighing 55.6 kg developed pallor, rolling back of the eyes, and rhythmic muscle twitching after receiving a mandibular nerve block injection with a 1...
July 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28474871/effects-of-hydrogen-rich-water-on-prolonged-intermittent-exercise
#18
Alessandro DA Ponte, Nicola Giovanelli, Daniele Nigris, Stefano Lazzer
BACKGROUND: Recent studies showed a positive effect of Hydrogen Rich Water (HRW) intake on acid-basic homeostasis at rest. We investigated 2-weeks of HRW intake on repeated sprint performance and acid-base status during prolonged intermittent cycling exercise. METHODS: In a cross over single-blind protocol, eight trained male cyclists (age [mean ± SD] 41±7 years, body mass 72.3±4.4 kg, height 1.77±0.04 m, maximal oxygen uptake [V̇ O2max] 52.6±4.4 ml·kg-1·min-1) were provided daily with 2 liters of placebo normal water (PLA, pH 7...
April 26, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28469580/microbiota-is-involved-in-post-resection-adaptation-in-humans-with-short-bowel-syndrome
#19
Laura Gillard, Camille Mayeur, Véronique Robert, Isabelle Pingenot, Johanne Le Beyec, André Bado, Patricia Lepage, Muriel Thomas, Francisca Joly
Short bowel syndrome (SBS) is characterized by severe intestinal malabsorption following restrictive surgery. The objective of this study was to determine the functional contribution of SBS-microbiota after resection. It is well-known that SBS-microbiota displayed specific features with a prevalence of Lactobacillus, a low amount of some anaerobic microbes (Clostridium leptum) and an accumulation of fecal lactate in some patients. Patients with jejuno-colonic anastomosis were stratified according to the presence of lactate in their feces and, we observe that the lactate-producing bacteria were predominant in the sub-group of patients accumulating fecal lactate...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28458755/trend-of-blood-lactate-level-in-acute-aluminum-phosphide-poisoning
#20
Peyman Erfantalab, Kambiz Soltaninejad, Shahin Shadnia, Nasim Zamani, Hossein Hassanian-Moghaddam, Arezou Mahdavinejad, Behrooz Hashemi Damaneh
BACKGROUND: Aluminum phosphide (AlP) poisoning is common in the developing countries. There is no specific antidote for the treatment of acute AlP poisoning. Early diagnosis of poisoning and outcome predictors may facilitate treatment decisions. The objective of this study was to determine the trend of blood lactate level in acute AlP poisoning to evaluate its role as a prognostic factor. METHODS: This was a prospective study on acute AlP intoxicated patients during one year...
2017: World Journal of Emergency Medicine
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