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Fluid and water balance

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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
#1
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/28522975/hypoxia-and-inactivity-related-physiological-changes-constipation-inflammation-are-not-reflected-at-the-level-of-gut-metabolites-and-butyrate-producing-microbial-community-the-planhab-study
#2
Robert Šket, Nicole Treichel, Tadej Debevec, Ola Eiken, Igor Mekjavic, Michael Schloter, Marius Vital, Jenna Chandler, James M Tiedje, Boštjan Murovec, Zala Prevoršek, Blaž Stres
We explored the assembly of intestinal microbiota in healthy male participants during the run-in (5 day) and experimental phases [21-day normoxic bed rest (NBR), hypoxic bedrest (HBR)], and hypoxic ambulation (HAmb) in a strictly controlled laboratory environment, balanced fluid, and dietary intakes, controlled circadian rhythm, microbial ambiental burden, and 24/7 medical surveillance. The fraction of inspired O2 (FiO2) and partial pressure of inspired O2 (PiO2) were 0.209 and 133.1 ± 0.3 mmHg for NBR and 0...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28509396/anti-inflammatory-antioxidant-and-immunomodulatory-effects-of-curcumin-in-ovalbumin-sensitized-rat
#3
Farzaneh Shakeri, Mohammad Hossein Boskabady
BACKGROUND: Anti-inflammatory and antioxidant properties of curcumin have been shown. In this study, anti-inflammatory, antioxidant, and immunomodulatory effects of curcumin in sensitized rat were evaluated. METHODS: Six groups of rats including control (C), ovalbumin-sensitized (as a rat model of asthma, S), S groups treated with curcumin (Cu 0.15, 0.30, and 0.60 mg/mL), and 1.25 μg/mL dexamethasone (S + D) were studied. Curcumin and dexamethasone were given in animals' drinking water during sensitization period...
May 16, 2017: BioFactors
https://www.readbyqxmd.com/read/28486888/endothelial-glycocalyx-basic-science-and-clinical-implications
#4
N L Pillinger, Pca Kam
The classic Starling principle proposed that microvascular fluid exchange was determined by a balance of hydrostatic and oncotic pressures relative to the vascular wall and this movement of water was regulated by gaps in the intercellular spaces. However, current literature on the endothelial glycocalyx (a jelly-like protective layer covering the luminal surface of the endothelium) has revised Starling's traditional concepts. This article aims to summarise the literature on the glycocalyx related to its basic science, clinical settings inciting injury, protective strategies and clinical perspectives...
May 2017: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/28482384/-effects-and-mechanisms-of-high-volume-hemofiltration-on-endotoxin-induced-acute-lung-injury-of-piglets
#5
W M Chen, G F Yan, Z J Lu, G P Lu
Objective: To compare the effects of high-volume hemofiltration (HVHF) and continuous veno-venous hemofiltration (CVVH) on cardiopulmonary functions, lung fluid balance, lung damage and cytokine expression in endotoxin-induced acute lung injury piglet model, and to further evaluate the value of high-volume hemofiltration in acute lung injury. Method: Eighteen piglets were randomly divided into the control group (6 piglets), the CVVH group (6 piglets) and the HVHF group (6 piglets). By general anesthesia, the intravenous infusion of 0...
May 4, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28456279/calibration-transfer-of-a-raman-spectroscopic-quantification-method-from-at-line-to-in-line-assessment-of-liquid-detergent-compositions
#6
D Brouckaert, J-S Uyttersprot, W Broeckx, T De Beer
The industrial production of liquid detergent compositions entails delicate balance of ingredients and process steps. In order to assure high quality and productivity in the manufacturing line, process analytical technology tools such as Raman spectroscopy are to be implemented. Marked chemical specificity, negligible water interference and high robustness are ascribed to this process analytical technique. Previously, at-line calibration models have been developed for determining the concentration levels of the being studied liquid detergents main ingredients from Raman spectra...
June 8, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28414302/increased-salt-consumption-induces-body-water-conservation-and-decreases-fluid-intake
#7
Natalia Rakova, Kento Kitada, Kathrin Lerchl, Anke Dahlmann, Anna Birukov, Steffen Daub, Christoph Kopp, Tetyana Pedchenko, Yahua Zhang, Luis Beck, Bernd Johannes, Adriana Marton, Dominik N Müller, Manfred Rauh, Friedrich C Luft, Jens Titze
BACKGROUND: The idea that increasing salt intake increases drinking and urine volume is widely accepted. We tested the hypothesis that an increase in salt intake of 6 g/d would change fluid balance in men living under ultra-long-term controlled conditions. METHODS: Over the course of 2 separate space flight simulation studies of 105 and 205 days' duration, we exposed 10 healthy men to 3 salt intake levels (12, 9, or 6 g/d). All other nutrients were maintained constant...
May 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28411128/the-effects-of-experimental-gestational-hypertension-on-maternal-blood-pressure-and-fluid-intake-and-pre-weanling-hypothalamic-neuronal-activity
#8
Juan Arguelles, Carmen Perillan, Terry G Beltz, Baojian Xue, Daniel Badaue-Passos, Jose A Vega, Alan Kim Johnson
To examine the fetal programming effects of maternal hypertension, natriophilia and hyperreninemia [experimentally induced in rats by partial inter-renal aortic ligature (PAL) prior to mating] fos immunoreactivity was studied in 6-day-old offspring of PAL and control mothers. The purposes of the present set of experiments were twofold. The first was to characterize the effects of PAL on the mother's arterial blood pressure and intake of salt (1.8% NaCl solution) and water over the course of gestation. Second, was to study the pattern of neuronal activation in key brain areas of 6-day-old offspring treated with the dipsogen isoproterenol that were from PAL and control mothers...
April 12, 2017: Appetite
https://www.readbyqxmd.com/read/28406441/beverage-consumption-habits-among-the-european-population-association-with-total-water-and-energy-intakes
#9
Mariela Nissensohn, Almudena Sánchez-Villegas, Pilar Galan, Aida Turrini, Nathalie Arnault, Lorenza Mistura, Adriana Ortiz-Andrellucchi, Fabien Szabo de Edelenyi, Laura D'Addezio, Lluis Serra-Majem
BACKGROUND: Fluid and water intake have received limited attention in epidemiological studies. The aim of this study was to compare the average daily consumption of foods and beverages in adults of selective samples of the European Union (EU) population in order to understand the contribution of these to the total water intake (TWI), evaluate if the EU adult population consumes adequate amounts of total water (TW) according to the current guidelines, and to illustrate the real water intake in Europe...
April 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28395164/interaction-of-poly-lactic-co-glycolic-acid-nanoparticles-at-fluid-interfaces
#10
Gergő Gyulai, Éva Kiss
HYPOTHESIS: Adsorption and localization of nanoparticles at fluid interfaces are key factors in processes like transport through membranes or emulsion stabilization. Adsorption of poly(lactic-co-glycolic acid) (PLGA) and Pluronic coated PLGA nanoparticles (NPs) were studied at three different fluid interfaces. The effect of particle surface modification and type of interface was investigated with the aim of fine tuning interfacial interaction of the nanoparticles. EXPERIMENTS: Surface tension measurements were carried out to determine the surface activity and adsorption kinetics of the particles...
March 31, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28384420/not-good-but-not-all-bad-dehydration-effects-on-body-fluids-organ-masses-and-water-flux-through-the-skin-of-rhinella-schneideri-amphibia-bufonidae
#11
Rodolfo C O Anderson, Rafael P Bovo, Carlos E Eismann, Amauri A Menegario, Denis V Andrade
Because of their permeable skin, terrestrial amphibians are constantly challenged by the potential risk of dehydration. However, some of the physiological consequences associated with dehydration may affect aspects that are themselves relevant to the regulation of water balance. Accordingly, we examined the effects of graded levels of dehydration on the rates of evaporative water loss and water absorption through the skin in the terrestrial Neotropical toad, Rhinella schneideri. Concomitantly, we monitored the effects of dehydration on the mass of visceral organs; hematocrit and hemoglobin content; plasma osmolality; and plasma concentration of urea, sodium, chloride, and potassium...
May 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28377431/the-renal-and-cardiovascular-effects-of-natriuretic-peptides
#12
Philip Ching Yat Wong, Jun Guo, Aidong Zhang
The landmark report by de Bold et al. in 1981 signified the heart as one of the endocrine organs involved in fluid and salt balance (de Bold AJ, Borenstein HB, Veress AT, Sonnenberg H. Life Sci 28: 89-94, 1981). Atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) are secreted from cardiomyocytes in response to cardiac stretch as in the case of heart failure, whereas C-type natriuretic peptide (CNP) is secreted from endothelial and renal cells in response to cytokines and endothelium-dependent agonists, such as acetylcholine...
June 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/28371470/role-of-renal-vascular-potassium-channels-in-physiology-and-pathophysiology
#13
REVIEW
M Salomonsson, J C Brasen, C M Sorensen
The control of renal vascular tone is important for the regulation of salt and water balance, blood pressure and the protection against damaging elevated glomerular pressure. The K(+) conductance is a major factor in the regulation of the membrane potential (Vm ) in vascular smooth muscle (VSMC) and endothelial cells (EC). The vascular tone is controlled by Vm via its effect on the opening probability of voltage-operated Ca(2+) channels (VOCC) in VSMC. When K(+) conductance increases Vm becomes more negative and vasodilation follows, while deactivation of K(+) channels leads to depolarization and vasoconstriction...
March 30, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28338158/-diagnosis-and-treatment-of-duodenal-injury-and-fistula
#14
Kunmei Gong, Shikui Guo, Kunhua Wang
Duodenal injury is a serious abdominal organ injury. Duodenal fistula is one of the most serious complications in gastrointestinal surgery, which is concerned for its critical status, difficulty in treatment and high mortality. Thoracic and abdominal compound closed injury and a small part of open injury are common causes of duodenal injury. Iatrogenic or traumatic injury, malnutrition, cancer, tuberculosis, Crohn's disease etc. are common causes of duodenal fistula, however, there has been still lacking of ideal diagnosis and treatment by now...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28336818/increased-exposure-to-sodium-during-pregnancy-and-lactation-changes-basal-and-induced-behavioral-and-neuroendocrine-responses-in-adult-male-offspring
#15
Marcia S Silva, Fabiana Lúcio-Oliveira, Andre Souza Mecawi, Lucas F Almeida, Silvia G Ruginsk, Michael P Greenwood, Mingkwan Greenwood, Laura Vivas, Lucila L K Elias, David Murphy, José Antunes-Rodrigues
Excessive sodium (Na(+)) intake in modern society has been associated with several chronic disorders such as hypertension. Several studies suggest that early life events can program physiological systems and lead to functional changes in adulthood. Therefore, we investigated behavioral and neuroendocrine responses under basal conditions and after 48 h of water deprivation in adult (60-day-old Wistar rats) male, Wistar rats originating from dams were offered only water or 0.15 mol/L NaCl during pregnancy and lactation...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28316054/the-effect-of-fluid-intake-following-dehydration-on-subsequent-athletic-and-cognitive-performance-a-systematic-review-and-meta-analysis
#16
REVIEW
Danielle McCartney, Ben Desbrow, Christopher Irwin
BACKGROUND: The deleterious effects of dehydration on athletic and cognitive performance have been well documented. As such, dehydrated individuals are advised to consume fluid in volumes equivalent to 1.25 to 1.5 L kg(-1) body mass (BM) lost to restore body water content. However, individuals undertaking subsequent activity may have limited time to consume fluid. Within this context, the impact of fluid intake practices is unclear. This systematic review investigated the effect of fluid consumption following a period of dehydration on subsequent athletic and cognitive performance...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28283476/alveolar-non-selective-channels-are-asic1a-%C3%AE-enac-channels-and-contribute-to-afc
#17
Phi T Trac, Tiffany L Thai, Valerie Linck, Li Zou, Megan M Greenlee, Qiang Yue, Otor K Al-Khalili, Abdel A Alli, Amity F Eaton, Douglas C Eaton
A thin fluid layer in alveoli is normal and results from a balance of fluid entry and fluid uptake by transepithelial salt and water reabsorption. Conventional wisdom suggests the reabsorption is via epithelial Na(+) channels (ENaC), but if all Na(+) reabsorption was via ENaC, then amiloride, an ENaC inhibitor, should block AFC. But amiloride blocks only half of AFC. The reason for failure to block is clear from single channel measurements from alveolar epithelial cells: ENaC channels are observed, but another channel is present at the same frequency that is non-selective for Na(+) over K(+), has a larger conductance, and shorter open and closed times...
March 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28267585/disturbances-of-thirst-and-fluid-balance-associated-with-aging
#18
REVIEW
Denovan P Begg
During heat waves, significant mortality and morbidity occurs in elderly populations due to heat-stress and dehydration. The dehydration is primarily attributable to inadequate water intake caused by dysfunction of the central nervous system mechanisms controlling thirst. The phenomenon of a reduced thirst in response to dehydration in aging was first observed decades ago and has been examined extensively since. The reduced thirst and ingestive behavior have been reported consistently in response to hyperosmotic stimuli, hypovolemic stimuli and dehydration in both elderly humans and animal models of aging...
March 3, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28258569/aquaporins-in-respiratory-system
#19
Yuanlin Song, Linlin Wang, Jian Wang, Chunxue Bai
Aquaporins (AQPs ) are water channel proteins supposed to facilitating fluid transport in alveolar space, airway humidification, pleural fluid absorption, and submucosal gland secretion . In this chapter, we mainly focus on the expression of 4 AQPs in the lungs which include AQP1, AQP2 , AQP4 and AQP5 in normal and disease status, and the experience of AQPs function from various model and transgenic mice were summarized in detail to improve our understanding of the role of AQPs in fluid balance of respiratory system...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28253022/a-sodium-drink-enhances-fluid-retention-during-3-hours-of-post-exercise-recovery-when-ingested-with-a-standard-meal
#20
Gethin H Evans, Jennifer Miller, Sophie Whiteley, Lewis J James
The purpose of this study was to examine the efficacy of water and a 50 mmol/L NaCl solution on post-exercise rehydration when a standard meal was consumed during rehydration. Eight healthy participants took part in two experimental trials during which they lost 1.5 ± 0.4 % of initial body mass via intermittent exercise in the heat. Participants then rehydrated over a 60 minute period with water or a 50 mmol/L NaCl solution in a volume equivalent to 150% of their body mass loss during exercise. In addition, a standard meal was ingested during this time which was equivalent to 30% of participants predicted daily energy expenditure...
March 2, 2017: International Journal of Sport Nutrition and Exercise Metabolism
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