keyword
MENU ▼
Read by QxMD icon Read
search

Fluid and water balance

keyword
https://www.readbyqxmd.com/read/28910532/roles-of-wettability-and-supercooling-in-cyclopentane-hydrate-spreading-over-a-substrate
#1
Abdelhafid Touil, Daniel Broseta, Nelly Hobeika, Ross Brown
We use transmission optical microscopy to observe cyclopentane hydrate growth in sub-mm, open glass capillaries, mimicking cylindrical pores. The capillary is initially loaded with water and the guest fluid (cyclopentane) and thus possesses three menisci, that between water and cyclopentane (CP) in the middle, and two menisci with the vapors at the ends. At temperatures T below the equilibrium temperature Teq ∼ 7°C, the hydrate nucleates on the water-CP meniscus, rapidly coating it with an immobile, polycrystalline crust...
September 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28903061/lymphatic-drainage-system-of-the-brain-a-novel-target-for-intervention-of-neurological-diseases
#2
REVIEW
Bao-Liang Sun, Li-Hua Wang, Tuo Yang, Lei-Lei Mao, Jing-Yi Sun, Ming-Feng Yang, Hui Yuan, Robert A Colvin, Xiao-Yi Yang
The belief that the vertebrate brain functions normally without classical lymphatic drainage vessels has been held for many decades. On the contrary, new findings show that functional lymphatic drainage does exist in the brain. The brain lymphatic drainage system is composed of basement membrane-based perivascular pathway, a brain-wide glymphatic pathway, and cerebrospinal fluid (CSF) drainage routes including sinus-associated meningeal lymphatic vessels and olfactory/cervical lymphatic routes. The brain lymphatic systems function physiological as a route of drainage for interstitial fluid (ISF) from brain parenchyma to nearby lymph nodes...
September 10, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28895063/considerations-in-the-use-of-body-mass-change-to-estimate-change-in-hydration-status-during-a-161-kilometer-ultramarathon-running-competition
#3
Martin D Hoffman, Eric D B Goulet, Ronald J Maughan
Hydration guidelines found in the scientific and popular literature typically advise that body mass losses beyond 2% should be avoided during exercise. In this work, we demonstrate that these guidelines are not applicable to prolonged exercise of several hours where body mass loss does not reflect an equivalent loss of body water due to the effects of body mass change from substrate use, release of water bound with muscle and liver glycogen, and production of water during substrate metabolism. These effects on the body mass loss required to maintain body water balance are shown for a 161-km mountain ultramarathon running competition participant utilizing published data for the total energy cost, exogenous energy consumption and percentage from each fuel source, average participant body mass, and the extent of soft tissue fluid accumulation during an ultramarathon...
September 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28884936/dietary-cation-and-anion-difference-effects-on-milk-production-and-body-fluid-distribution-in-lactating-dairy-goats-under-tropical-conditions
#4
Thiet Nguyen, Narongsak Chaiyabutr, Somchai Chanpongsang, Sumpun Thammacharoen
This study aimed to determine the effect of dietary cation and anion difference (DCAD) on milk production and body fluid distribution in lactating dairy goats. Ten dairy goats were selected and divided into two groups, five animals each. Animals received either control DCAD (control, 22.81 mEq/100 g dry matter (DM)) or high DCAD (DCAD, 39.08 mEq/100 g DM). The results indicated that rectal temperature (Tr), respiration rate, milk yield and compositions did not differ between groups. But the percentage change of Tr from the DCAD group was lower than the control group between 09...
September 8, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28876128/influence-of-inhaled-amiloride-on-lung-fluid-clearance-in-response-to-normobaric-hypoxia-in-healthy-individuals
#5
Courtney M Wheatley, Sarah E Baker, Bryan J Taylor, Manda L Keller-Ross, Steven C Chase, Alex R Carlson, Robert J Wentz, Eric M Snyder, Bruce D Johnson
Wheatley, Courtney M., Sarah E. Baker, Bryan J. Taylor, Manda L. Keller-Ross, Steven C. Chase, Alex R. Carlson, Robert J. Wentz, Eric M. Snyder, and Bruce D. Johnson. Influence of inhaled amiloride on lung fluid clearance in response to normobaric hypoxia in healthy individuals. High Alt Med Biol 00:000-000, 2017. AIM: To investigate the role of epithelial sodium channels (ENaC) on lung fluid clearance in response to normobaric hypoxia, 20 healthy subjects were exposed to 15 hours of hypoxia (fraction of inspired oxygen [FiO2] = 12...
September 6, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28868290/coffee-with-high-but-not-low-caffeine-content-augments-fluid-and-electrolyte-excretion-at-rest
#6
Adam D Seal, Costas N Bardis, Anna Gavrieli, Petros Grigorakis, J D Adams, Giannis Arnaoutis, Mary Yannakoulia, Stavros A Kavouras
BACKGROUND: Low levels of caffeine ingestion do not induce dehydration at rest, while it is not clear if larger doses do have an acute diuretic effect. The aim of the present investigation was to examine the acute effect of low and high levels of caffeine, via coffee, on fluid balance in habitual coffee drinkers (at least one per day) at rest. METHODS: Ten healthy adults (eight males and two females; age: 27 ± 5 years, weight: 89.5 ± 14.8 kg, height: 1...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28861934/indirect-mri-of-17-o-labeled-water-using-steady-state-sequences-signal-simulation-and-preclinical-experiment
#7
Kohsuke Kudo, Taisuke Harada, Hiroyuki Kameda, Ikuko Uwano, Fumio Yamashita, Satomi Higuchi, Kunihiro Yoshioka, Makoto Sasaki
BACKGROUND: Few studies have been reported for T2 -weighted indirect (17) O imaging. PURPOSE/HYPOTHESIS: To evaluate the feasibility of steady-state sequences for indirect (17) O brain imaging. STUDY TYPE: Signal simulation, phantom measurements, and prospective animal experiments were performed in accordance with the institutional guidelines for animal experiments. POPULATION/SUBJECTS/PHANTOM/SPECIMEN/ANIMAL MODEL: Signal simulations of balanced steady-state free precession (bSSFP) were performed for concentrations of (17) O ranging from 0...
August 31, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28861607/glomerular-and-tubular-effects-of-nitric-oxide-no-are-regulated-by-angiotensin-ii-ang-ii-in-an-age-dependent-manner-through-activation-of-both-angiotensin-receptors-at1rs-and-at2rs-in-conscious-lambs
#8
Angela E Vinturache, Francine G Smith
Renin-angiotensin (RAS) and nitric oxide (NO) systems and the balance and interaction between them are considered of primary importance in maintaining fluid and electrolyte homeostasis. It has been suggested that the effects of NO may be modulated at least in part by the angiotensin (Ang) II, yet the roles of angiotensin receptor type 1 (AT1R) and type 2 (AT2R) are not well understood. Even though both Ang II and NO are elevated at birth and during the newborn period, their contribution to the adaptation of the newborn to life after birth as well as their physiological roles during development are poorly understood...
August 31, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28829810/extracellular-overhydration-linked-with-endothelial-dysfunction-in-the-context-of-inflammation-in-haemodialysis-dependent-chronic-kidney-disease
#9
Nicos Mitsides, Tom Cornelis, Natascha J H Broers, Nanda M P Diederen, Paul Brenchley, Frank M van der Sande, Casper G Schalkwijk, Jeroen P Kooman, Sandip Mitra
BACKGROUND: Haemodialysis (HD) patients are predisposed to dysregulated fluid balance leading to extracellular water (ECW) expansion. Fluid overload has been closely linked with outcome in these patients. This has mainly been attributed to cardiac volume overload, but the relation between abnormalities in fluid status with micro- and macrovascular dysfunction has not been studied in detail. We studied the interaction of macro- and microvascular factors in states of normal and over- hydration in HD-dependent CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28791006/regulation-of-lung-epithelial-sodium-channels-by-cytokines-and-chemokines
#10
REVIEW
Brandi M Wynne, Li Zou, Valerie Linck, Robert S Hoover, He-Ping Ma, Douglas C Eaton
Acute lung injury leading to acute respiratory distress (ARDS) is a global health concern. ARDS patients have significant pulmonary inflammation leading to flooding of the pulmonary alveoli. This prevents normal gas exchange with consequent hypoxemia and causes mortality. A thin fluid layer in the alveoli is normal. The maintenance of this thin layer results from fluid movement out of the pulmonary capillaries into the alveolar interstitium driven by vascular hydrostatic pressure and then through alveolar tight junctions...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28777197/elabela-improves-cardio-renal-outcome-in-fatal-experimental-septic-shock
#11
David Coquerel, Frédéric Chagnon, Xavier Sainsily, Lauralyne Dumont, Alexandre Murza, Jérôme Côté, Robert Dumaine, Philippe Sarret, Éric Marsault, Dany Salvail, Mannix Auger-Messier, Olivier Lesur
OBJECTIVES: Apelin-13 was recently proposed as an alternative to the recommended β-adrenergic drugs for supporting endotoxin-induced myocardial dysfunction. Since Apelin-13 signals through its receptor (Apelin peptide jejunum) to exert singular inotropic/vasotropic actions and to optimize body fluid balance, this candidate pathway might benefit septic shock management. Whether the newly discovered ELABELA (ELA), a second endogenous ligand of the Apelin peptide jejunum receptor highly expressed in the kidney, further improves cardio-renal impairment remains unknown...
August 2, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28771063/reliability-of-urinary-dehydration-markers-among-elite-youth-boxers
#12
Damir Zubac, Drazen Cular, Uros Marusic
PURPOSE: The aim of the present study was to determine the reliability and diagnostic accuracy of non-invasive urinary dehydration markers, in field-based settings on a day-to-day basis in elite adolescent amateur boxers. METHODS: Sixty-nine urine samples were collected on a day-to-day basis, from twenty-three athletes (17.3±1.9 y), during their weigh-stable phase and analyzed by field and laboratory measures of hydration status. Urine osmolality (UOSM), urine specific gravity (USG), total protein content (TPC) and body-mass (BM) stability were evaluated to determine fluid balance and hydration status...
August 3, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28759085/resveratrol-did-not-alter-blood-pressure-in-rats-with-nitric-oxide-synthase-inhibited-hypertension
#13
Mehmet Aydin, Buket Gungor, A Secil Akdur, Hakki Engin Aksulu, Coskun Silan, Ibrahim Susam, Ali Kemal Cabuk, Gizem Cabuk
BACKGROUND: Inhibition of nitric oxide synthase (NOS) is a well-known experimental model of hypertension (HT). It was shown that oxidative stress contributes to the pathogenesis of HT. Resveratrol is a potent anti-oxidant that is found in red grapes, peanuts and red wine. It improves the NO response and increases endothelial NOS expression, which causes endothelium-dependent vasorelaxation as well as renal vasodilation. We aimed to explore the effects of resveratrol on blood pressure, the water-salt balance and sodium excretion as a reflection of renal function in NOS-inhibited rat models...
May 2017: Cardiovascular Journal of Africa
https://www.readbyqxmd.com/read/28756626/myths-and-methodologies-making-sense-of-exercise-mass-and-water-balance
#14
Samuel N Cheuvront, Scott J Montain
What is the topic of this review? There is a need to revisit the basic principles of exercise mass and water balance, the use of common equations and the practice of interpreting outcomes. What advances does it highlight? We propose use of the following equation as a way of simplifying exercise mass and water balance calculations in conditions where food is not consumed and waste is not excreted: ∆body mass - 0.20 g/kcal(-1)  = ∆body water. The relative efficacy of exercise drinking behaviours can be judged using the following equation: percentage dehydration = [(∆body mass - 0...
July 30, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28735787/chemical-physical-properties-and-apatite-forming-ability-of-mineral-trioxide-aggregate-flow
#15
Bruno Martini Guimarães, Rodrigo Ricci Vivan, Bruno Piazza, Murilo Priori Alcalde, Clovis Monteiro Bramante, Marco Antonio Hungaro Duarte
INTRODUCTION: This study aimed to analyze the chemical-physical properties, including pH, volumetric change, radiopacity, and apatite-forming ability in simulated body fluid, of a new tricalcium silicate material (MTA Flow; Ultradent Products Inc, South Jordan, UT). METHODS: MTA Flow was tested in comparison with MTA Angelus (Angelus, Londrina, PR, Brazil). The pH of soaking water was tested up to 168 hours in deionized water. In the solubility test, the root-end fillings of 20 acrylic teeth were scanned twice by micro-computed tomographic imaging before and after immersion in ultrapure water for 168 hours...
July 20, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28734347/different-approaches-to-study-protein-films-at-air-water-interface
#16
EDITORIAL
María José Gálvez-Ruiz
In this review classical studies on insoluble liquid monolayers formed by proteins are examined and compared. It has been focused the attention on the information that it is possible to obtain from the π-a isotherms recorded by compression of the monolayers. In recent decades new techniques have developed, mainly microscopy, that provide valuable information on the behavior and structure of fluid films. However, frequently the data are difficult to interpret and require a previous thermodynamic study of them on the basis of the surface tension (or surface pressure) as a function of the molecular area measurement...
July 15, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28713503/drinking-water-in-traditional-persian-medicine-do-s-and-don-ts
#17
Majid Nimrouzi, Babak Daneshfard
Water is the main component of our body and its balance is vital for maintaining normal physiology. Accordingly, adequate fluid intake in the daily diet is very important for a healthy life. Nevertheless, there is a controversy about what the suitable amount of water that we need to drink is. In this paper, we aimed to discuss this important issue based on the doctrine of traditional Persian medicine (TPM) and our clinical experience in a practical manner.
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28675827/hyperglycemia-induced-hyponatremia-reevaluation-of-the-na-correction-factor
#18
Matthew B Wolf
This study addresses the clinically important relationship between the decreases in plasma Na(+) and the increases in plasma glucose concentrations seen in diabetes and other hyperglycemic syndromes. This plasma 'Na(+) correction factor', is generally accepted as 1.6mM Na(+) per 100mg% glucose (0.29mM/mM in SI units) assuming osmotic equilibrium, although much larger numbers have been measured in experiments on normal humans. To resolve this controversy, a mathematical model of whole-body fluid-electrolyte balance was used to perform the experiment wherein plasma glucose concentration was increased to diabetic levels and the plasma Na(+) concentration changes assessed, without the complications seen in human experiments...
June 29, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28674538/involvement-of-cytokines-in-the-pathogenesis-of-salt-and-water-imbalance-in-congestive-heart-failure
#19
Zaher S Azzam, Safa Kinaneh, Fadel Bahouth, Reem Ismael-Badarneh, Emad Khoury, Zaid Abassi
Congestive heart failure (CHF) has become a major medical problem in the western world with high morbidity and mortality rates. CHF adversely affects several systems, mainly the kidneys and the lungs. While the involvement of the renin-angiotensin-aldosterone system and the sympathetic nervous system in the progression of cardiovascular, pulmonary, and renal dysfunction in experimental and clinical CHF is well established, the importance of pro-inflammatory mediators in the pathogenesis of this clinical setting is still evolving...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28673579/the-chloride-theory-a-unifying-hypothesis-for-renal-handling-and-body-fluid-distribution-in-heart-failure-pathophysiology
#20
Hajime Kataoka
Body fluid volume regulation is a complex process involving the interaction of various afferent (sensory) and neurohumoral efferent (effector) mechanisms. Historically, most studies focused on the body fluid dynamics in heart failure (HF) status through control of the balance of sodium, potassium, and water in the body, and maintaining arterial circulatory integrity is central to a unifying hypothesis of body fluid regulation in HF pathophysiology. The pathophysiologic background of the biochemical determinants of vascular volume in HF status, however, has not been known...
July 2017: Medical Hypotheses
keyword
keyword
83174
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"