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Electrolyte balance

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https://www.readbyqxmd.com/read/28782823/drugs-and-the-kidneys-clinical-pharmacology-perspectives
#1
EDITORIAL
John Vincent
The focus of this edition of Clinical Pharmacolgoy & Therapeutics (CPT) is on drugs and renal function and will not include a detailed discussion of kidney disease and its treatment. It is well recognized that drugs affect the kidneys in different ways, while kidney disease impacts drug metabolism and response. It is impossible to underestimate the value of the kidneys to man in health and disease, from regulation of fluid and electrolyte balance to participating in drug metabolism and transport. Additionally, the kidneys serve as targets for drugs used to treat cardiovascular (CV) diseases including hypertension and heart failure, metabolic diseases such as diabetes mellitus and obesity, chronic kidney disease (CKD), as well as playing a role in the regulation of several hormones...
September 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28771454/%C3%AE-ketoglutarate-drives-electroneutral-nacl-reabsorption-in-intercalated-cells-by-activating-a-g-protein-coupled-receptor-oxgr1
#2
Paul R Grimm, Paul A Welling
PURPOSE OF REVIEW: This review describes the recent discoveries about a powerful electroneutral NaCl reabsorption mechanism in intercalated cells, and its regulation by an intrarenal metabolite paracrine, α-ketoglutartate, and the G-protein coupled receptor, Oxgr1. RECENT FINDINGS: The distal nephron fine-tunes sodium, chloride, potassium, hydrogen, bicarbonate and water transport to maintain electrolyte homeostasis and blood pressure. Intercalated cells have been traditionally viewed as the professional regulators of acid-base balance, but recent studies reveal that a specific population of intercalated cells, identified by the pendrin-transporter, have a surprising role in the regulation of salt balance...
September 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28770121/necrotizing-pneumonia-an-emerging-problem-in-children
#3
REVIEW
I Brent Masters, Alan F Isles, Keith Grimwood
BACKGROUND: In children, necrotizing pneumonia (NP) is an uncommon, severe complication of pneumonia. It is characterized by destruction of the underlying lung parenchyma resulting in multiple small, thin-walled cavities and is often accompanied by empyema and bronchopleural fistulae. REVIEW: NP in children was first reported in children in 1994, and since then there has been a gradual increase in cases, which is partially explained by greater physician awareness and use of contrast computed tomography (CT) scans, and by temporal changes in circulating respiratory pathogens and antibiotic prescribing...
2017: Pneumonia
https://www.readbyqxmd.com/read/28762228/-a-systematic-review-and-meta-analysis-of-the-pros-and-cons-of-consuming-liquids-preoperatively
#4
Fang-Tzu Lin, Tsai-Rung Lin, Chia-Wei Liao, Shu-Hui Chen
BACKGROUND: Preoperative anesthesia long time fasting, may increase patient hemodynamic instability during surgery and may affect the patient's post-surgery electrolyte balance. No meta-analysis has been conducted to explore the effects of preoperative liquid intake amount on gastric fluid PH, gastric fluid volume, surgery inhalation of pulmonary complications, and patient self-perceptions quality of care systematic review and meta-analysis of the literature. PURPOSE: To assess the pros and cons of preoperative liquid intake using a systematic review of the literature...
August 2017: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/28759793/modelling-recovery-of-ammonium-from-urine-by-electro-concentration-in-a-3-chamber-cell
#5
Emma Thompson Brewster, Johannes Jermakka, Stefano Freguia, Damien J Batstone
Electro-concentration enables treatment and nutrient recovery from source-separated urine, and is a potential technology for on-site treatment using a 3 compartment configuration that has anode, cathode and middle concentrate compartments. There is a particular focus on driving concentration towards the precipitation threshold in the concentrate compartment to generate solid ammonium salts, including ammonium bicarbonate. To evaluate controlling mechanisms and the feasibility of achieving high concentrations, a dynamic mechanistic model was developed and validated using experiments with synthetic urine...
July 20, 2017: Water Research
https://www.readbyqxmd.com/read/28759725/strong-deformation-of-the-thick-electric-double-layer-around-a-charged-particle-during-sedimentation-or-electrophoresis
#6
Aditya S Khair
The deformation of the electric double layer around a charged colloidal particle during sedimentation or electrophoresis in a binary, symmetric electrolyte is studied. The surface potential of the particle is assumed to be small compared to the thermal voltage scale. Additionally, the Debye length is assumed to be large compared to the particle size. These assumptions enable a linearization of the electrokinetic equations. The particle appears as a point charge in this thick-double-layer limit; the distribution of charge in the diffuse cloud surrounding it is determined by a balance of advection due to the particle motion; Brownian diffusion of ions; and electrostatic screening of the particle by the cloud...
July 31, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28754139/evidence-of-altered-haemostasis-in-an-ovine-model-of-venovenous-extracorporeal-membrane-oxygenation-support
#7
Margaret R Passmore, Yoke L Fung, Gabriela Simonova, Samuel R Foley, Sara D Diab, Kimble R Dunster, Michelle M Spanevello, Charles I McDonald, John-Paul Tung, Natalie M Pecheniuk, Karen Hay, Kiran Shekar, John F Fraser
BACKGROUND: Extracorporeal membrane oxygenation (ECMO) is a life-saving modality used in the management of cardiopulmonary failure that is refractory to conventional medical and surgical therapies. The major problems clinicians face are bleeding and clotting, which can occur simultaneously. To discern the impact of pulmonary injury and ECMO on the host's haemostatic response, we developed an ovine model of smoke-induced acute lung injury (S-ALI) and ECMO. The aims of this study were to determine if the ECMO circuit itself altered haemostasis and if this was augmented in a host with pulmonary injury...
July 29, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28753027/-1-h-nmr-metabolic-profiling-of-earthworm-eisenia-fetida-coelomic-fluid-coelomocytes-and-tissue-identification-of-a-new-metabolite-malylglutamate
#8
Corey M Griffith, Preston B Williams, Luzineide W Tinoco, Meredith M Dinges, Yinsheng Wang, Cynthia K Larive
Earthworm metabolism is recognized as a useful tool for monitoring environmental insults and measuring ecotoxicity, yet extensive earthworm metabolic profiling using (1)H nuclear magnetic resonance (NMR) spectroscopy has been limited in scope. This study aims to expand the embedded metabolic material in earthworm coelomic fluid, coelomocytes, and tissue to aid systems toxicology research. Fifty-nine metabolites within Eisenia fetida were identified, with 47 detected in coelomic fluid, 41 in coelomocytes, and 54 in whole-worm samples and tissue extracts...
August 16, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28748185/novel-actions-of-growth-hormone-in-podocytes-implications-for-diabetic-nephropathy
#9
REVIEW
Dhanunjay Mukhi, Rajkishor Nishad, Ram K Menon, Anil Kumar Pasupulati
The kidney regulates water, electrolyte, and acid-base balance and thus maintains body homeostasis. The kidney's potential to ensure ultrafiltered and almost protein-free urine is compromised in various metabolic and hormonal disorders such as diabetes mellitus (DM). Diabetic nephropathy (DN) accounts for ~20-40% of mortality in DM. Proteinuria, a hallmark of renal glomerular diseases, indicates injury to the glomerular filtration barrier (GFB). The GFB is composed of glomerular endothelium, basement membrane, and podocytes...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28722461/-disorders-of-water-and-electrolyte-metabolism-and-changes-in-acid-base-balance-in-patients-with-ascitic-liver-cirrhosis
#10
Halima Gottfriedová, Miroslava Horáčková, Milena Čáslavská, Julius Špičák, Otto Schück
In patients with advanced cirrhosis with ascites disorders of water and electrolyte metabolism are often present and they are associated with changes in acid-base balance. These changes can be very complicated, their diagnosis and treatment difficult. Dilutional hyponatremia is the most common disorder. Hyponatremia in these patients is associated with increased morbidity and mortality before and after liver transplantation. Other common disorders include hyperchloremic acidosis, hypokalemia, metabolic alkalosis, lactic acidosis, respiratory alkalosis...
2017: Casopís Lékar̆ů C̆eských
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
#11
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...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28710664/role-of-sodium-ion-transporters-and-osmotic-adjustments-in-stress-alleviation-of-cynodon-dactylon-under-nacl-treatment-a-parallel-investigation-with-rice
#12
Swarnendu Roy, Usha Chakraborty
Comparative analyses of the responses to NaCl in Cynodon dactylon and a sensitive crop species like rice could effectively unravel the salt tolerance mechanism in the former. C. dactylon, a wild perennial chloridoid grass having a wide range of ecological distribution is generally adaptable to varying degrees of salinity stress. The role of salt exclusion mechanism present exclusively in the wild grass was one of the major factors contributing to its tolerance. Salt exclusion was found to be induced at 4 days when the plants were treated with a minimum conc...
July 15, 2017: Protoplasma
https://www.readbyqxmd.com/read/28693594/the-impact-of-phosphate-balanced-crystalloid-infusion-on-acid-base-homeostasis-palance-study-study-protocol-for-a-randomized-controlled-trial
#13
Judith-Irina Pagel, Nikolai Hulde, Tobias Kammerer, Michaela Schwarz, Daniel Chappell, Alexander Burges, Klaus Hofmann-Kiefer, Markus Rehm
BACKGROUND: This study aims to investigate the effects of a modified, balanced crystalloid including phosphate in a perioperative setting in order to maintain a stable electrolyte and acid-base homeostasis in the patient. METHODS/DESIGN: This is a single-centre, open-label, randomized controlled trial involving two parallel groups of female patients comparing a perioperative infusion regime with sodium glycerophosphate and Jonosteril® (treatment group) or Jonosteril® (comparator) alone...
July 10, 2017: Trials
https://www.readbyqxmd.com/read/28686506/the-impact-of-aging-on-epithelial-barriers
#14
Alan R Parrish
The epithelium has many critical roles in homeostasis, including an essential responsibility in establishing tissue barriers. In addition to the fundamental role in separating internal from external environment, epithelial barriers maintain nutrient, fluid, electrolyte and metabolic waste balance in multiple organs. While, by definition, barrier function is conserved, the structure of the epithelium varies across organs. For example, the skin barrier is a squamous layer of cells with distinct structural features, while the lung barrier is composed of a very thin single cell to minimize diffusion space...
June 26, 2017: Tissue Barriers
https://www.readbyqxmd.com/read/28684591/corp-improving-the-status-quo-for-measuring-whole-body-sweat-losses-wbsl
#15
Samuel N Cheuvront, Robert W Kenefick
The measurement of whole body sweat losses (WBSL) is important to the study of body heat balance, body water balance, establishing guidelines for water and electrolyte consumption, and the study of metabolism and health. In principal, WBSL is measured by an acute change in body mass (ΔBM) in response to a thermoregulatory sweating stimulus. In this CORP review, we re-visit several basic, but rarely discussed assumptions important to WBSL research, including the common equivalences: mass = weight = water = sweat...
July 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28675827/hyperglycemia-induced-hyponatremia-reevaluation-of-the-na-correction-factor
#16
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/28675310/effect-of-crude-protein-concentration-and-dietary-electrolyte-balance-on-litter-quality-foot-pad-dermatitis-growth-performance-and-processing-yields-in-two-medium-heavy-turkey-hybrids
#17
T Veldkamp, P M Hocking, L J Vinco
1. An experiment was conducted to investigate the effect of crude protein (CP) concentration and dietary electrolyte balance (DEB) on growth performance, processing yields, litter quality and foot pad dermatitis (FPD) in male turkeys from two commercial hybrids. Soya bean meal was replaced by vegetable protein sources selected for lower K concentrations to lower DEB in order to improve litter quality and subsequent quality of foot pads. 2. Effects of CP on litter friability and wetness were not consistent during the production period...
July 4, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28660810/intravenous-fluid-and-electrolyte-administration-in-elective-gastrointestinal-surgery-mechanisms-of-excessive-therapy
#18
R G Simpson, J Quayle, N Stylianides, G Carlson, M Soop
INTRODUCTION While clinical guidelines stress the importance of the judicious perioperative intravenous fluid administration, data show that adherence to these protocols is poor. The reasons have not been identified. We therefore audited the magnitude and indications of fluid and electrolyte administration in a teaching hospital. We hypothesised that epidural analgesia is associated with excessive fluid therapy. MATERIALS AND METHODS Intravenous fluid and electrolyte administration during the day of surgery and the subsequent 2 days in consecutive patients undergoing elective gastrointestinal surgery between November 2013 and May 2014 were retrospectively audited...
July 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28652798/combined-aquaretic-and-diuretic-therapy-in-acute-heart-failure
#19
Michael Goyfman, Paul Zamudio, Kristine Jang, Jennifer Chee, Catherine Miranda, Javed Butler, Nand K Wadhwa
INTRODUCTION: Acute heart failure (AHF) is a leading cause of hospitalization and readmission in the US. The present study evaluated maximum diuresis while minimizing electrolyte imbalances, hemodynamic instability, and kidney dysfunction, to achieve a euvolemic state safely in a shorter period of time. METHODS AND RESULTS: A protocol of combined therapy with furosemide, metolazone, and spironolactone, with or without tolvaptan and acetazolamide, was used in 17 hospitalized patients with AHF...
2017: International Journal of Nephrology and Renovascular Disease
https://www.readbyqxmd.com/read/28651510/pharmacodynamics-of-intravenous-frusemide-bolus-in-critically-ill-patients
#20
Agnes Huang, Nora Luethi, Johan Mårtensson, Rinaldo Bellomo, Luca Cioccari
OBJECTIVE: To assess the physiological, biochemical and haemodynamic response to a single intravenous (IV) dose of frusemide in critically patients. DESIGN, SETTING AND PATIENTS: A prospective observational study of 21 critically ill patients in a tertiary intensive care unit in Australia. INTERVENTIONS: We collected information on urine output (UO), fluid balance, serum and urinary electrolyte levels, serum biochemical levels and haemodynamics...
June 2017: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
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