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https://www.readbyqxmd.com/read/28532527/how-i-do-it-underwater-endoscopic-ear-surgery-for-plugging-in-superior-canal-dehiscence-syndrome
#1
D Yamauchi, Y Hara, H Hidaka, T Kawase, Y Katori
BACKGROUND: Underwater endoscopic ear surgery does not require suction and so protects the inner ear from unexpected aeration that may damage its function in the treatment of labyrinthine fistula. A method of underwater endoscopic ear surgery is proposed for the treatment of superior canal dehiscence. METHODS: Underwater endoscopic ear surgery was performed for plugging of the superior semicircular canal through the transmastoid approach. Saline solution was infused into the mastoid cavity through an Endo-Scrub Lens Cleaning Sheath...
May 23, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28526694/measuring-osmosis-and-hemolysis-of-red-blood-cells
#2
Lauren K Goodhead, Frances M MacMillan
Since the discovery of the composition and structure of the mammalian cell membrane, biologists have had a clearer understanding of how substances enter and exit the cell's interior. The selectively permeable nature of the cell membrane allows the movement of some solutes and prevents the movement of others. This has important consequences for cell volume and the integrity of the cell and, as a result, is of utmost clinical importance, for example in the administration of isotonic intravenous infusions. The concepts of osmolarity and tonicity are often confused by students as impermeant isosmotic solutes such as NaCl are also isotonic; however, isosmotic solutes such as urea are actually hypotonic due to the permeant nature of the membrane...
June 1, 2017: Advances in Physiology Education
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
#3
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/28516297/subcritical-water-hydrolysis-of-peptides-amino-acid-side-chain-modifications
#4
Thomas Powell, Steve Bowra, Helen J Cooper
Previously we have shown that subcritical water may be used as an alternative to enzymatic digestion in the proteolysis of proteins for bottom-up proteomics. Subcritical water hydrolysis of proteins was shown to result in protein sequence coverages greater than or equal to that obtained following digestion with trypsin; however, the percentage of peptide spectral matches for the samples treated with trypsin were consistently greater than for those treated with subcritical water. This observation suggests that in addition to cleavage of the peptide bond, subcritical water treatment results in other hydrolysis products, possibly due to modifications of amino acid side chains...
May 17, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28516140/comprehensive-list-of-metabolites-measured-by-di-fticr-mass-spectrometry-in-thyme-plants-with-contrasting-tolerance-to-drought
#5
Parviz Moradi, Brian Ford-Lloyd, Jeremy Pritchard
This article contains data related to the main research entitled "Metabolomic approach reveals the biochemical mechanisms underlying drought stress tolerance in Thyme" (Moradi et al., 2017) [1]. Two thyme populations with contrasting drought tolerance were subjected to long term water deficit. Leaf samples harvested at the end of stress period and bi-phasic extraction carried out to get polar and non-polar fractions. Extracted samples were analyzed through Direct Infusion FT-ICR mass spectrometry. Date files comprise of four separate tables for all the putatively identified metabolites and their intensities in watered and droughted plants...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28506514/a-novel-cooling-method-and-comparison-of-active-rewarming-of-mildly-hypothermic-subjects
#6
Mark L Christensen, Grant S Lipman, Dennis A Grahn, Kate M Shea, Joseph Einhorn, H Craig Heller
OBJECTIVE: To compare the effectiveness of arteriovenous anastomosis (AVA) vs heated intravenous fluid (IVF) rewarming in hypothermic subjects. Additionally, we sought to develop a novel method of hypothermia induction. METHODS: Eight subjects underwent 3 cooling trials each to a mean core temperature of 34.8±0.6 (32.7 to 36.3°C) by 14°C water immersion for 30 minutes, followed by walking on a treadmill for 5 minutes. Core temperatures (Δtes) and rates of cooling (°C/h) were measured...
May 11, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28503999/quantitative-assessment-of-brain-glucose-metabolic-rates-using-in%C3%A2-vivo-deuterium-magnetic-resonance-spectroscopy
#7
Ming Lu, Xiao-Hong Zhu, Yi Zhang, Gheorghe Mateescu, Wei Chen
Quantitative assessment of cerebral glucose consumption rate (CMRglc) and tricarboxylic acid cycle flux (VTCA) is crucial for understanding neuroenergetics under physiopathological conditions. In this study, we report a novel in vivo Deuterium ((2)H) MRS (DMRS) approach for simultaneously measuring and quantifying CMRglc and VTCA in rat brains at 16.4 Tesla. Following a brief infusion of deuterated glucose, dynamic changes of isotope-labeled glucose, glutamate/glutamine (Glx) and water contents in the brain can be robustly monitored from their well-resolved (2)H resonances...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28490529/effect-of-sodium-nitrite-on-renal-function-sodium-and-water-excretion-and-brachial-and-central-blood-pressure-in-healthy-subjects-a-dose-response-study
#8
Jeppe Bakkestroem Rosenbaek, Safa Al Therwani, Janni Majgaard Jensen, Frank Holden Mose, Christine Wandall-Frostholm, Erling Bjerregaard Pedersen, Jesper Noergaard Bech
Sodium nitrite (NaNO2) is converted to nitric oxide (NO) in vivo and has vasodilatory and natriuretic effects. Our aim was to examine the effects of NaNO2 on hemodynamics, sodium excretion and GFR. In a single-blinded, placebo-controlled, cross-over study, we infused placebo (0.9% NaCl) or 0.58, 1.74, or 3.48 μmol NaNO2/kg/hour for two hours in twelve healthy subjects, after four days standard diet. Subjects were supine and water-loaded. We measured brachial and central blood pressure (BP), plasma concentrations of renin, angiotensin II, aldosterone, arginine vasopressin (P-AVP), and plasma nitrite (P-NO2(-)), GFR by Cr-EDTA clearance, fractional excretion of sodium (FENa) free water clearance (CH2O), and urinary excretion rate of guanosine 3',5'-cyclic monophosphate (U-cGMP)...
May 10, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28482384/-effects-and-mechanisms-of-high-volume-hemofiltration-on-endotoxin-induced-acute-lung-injury-of-piglets
#9
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/28481175/dosimetric-evaluation-of-a-flexible-dual-balloon-constructed-applicator-in-treating-anorectal-cancer
#10
Hsiang-Chi Kuo, Keyur J Mehta, Ravindra Yaparpalvi, Alan Lee, Dinesh Mynampati, William Bodner, Madhur Garg, David Huang, Wolfgang A Tomé, Shalom Kalnicki
BACKGROUND AND PURPOSE: To assess the dosimetric flexibility of a dual balloon brachytherapy applicator developed for the treatment of anorectal lesions. MATERIALS AND METHODS: Different amounts of water were infused into the inner and outer balloon separately to study the asymmetrical distribution of the catheter, the radial distance of the active source channel to the inner surface of the global target volume , the space between the active source channels, and their dosimetric impact to target tissues and uninvolved rectum...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28473615/ten-days-of-repeated-local-forearm-heating-does-not-affect-cutaneous-vascular-function
#11
Michael A Francisco, Vienna E Brunt, Krista Nicole Jensen, Santiago Lorenzo, Christopher Todd Minson
The aim of the present study was to determine whether 10 days of repeated local heating was capable of inducing peripheral adaptations to the cutaneous vasculature, and to investigate potential mechanisms of adaptation. We also assessed maximal forearm blood flow to determine if repeated local heating affects maximal dilator capacity. METHODS: Before and after 10 days of heat training consisting of one-hour forearm exposures to 42°C water, or 32°C (control) in the contralateral arm (randomized and counterbalanced), we assessed hyperemia to rapid local heating of the skin (N=14 young, recreationally-active subjects)...
May 4, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28473290/oxytocin-administration-during-spontaneous-labor-guidelines-for-clinical-practice-chapter-3-interventions-associated-with-oxytocin-administration-during-spontaneous-labor
#12
C Barasinski, F Vendittelli
No abstract text is available yet for this article.
May 2, 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28472990/downregulating-anp32a-rescues-synapse-and-memory-loss-via-chromatin-remodeling-in-alzheimer-model
#13
Gao-Shang Chai, Qiong Feng, Zhi-Hao Wang, Yu Hu, Dong-Sheng Sun, Xiao-Guang Li, Dan Ke, Hong-Lian Li, Gong-Ping Liu, Jian-Zhi Wang
BACKGROUND: The impairment of histone acetylation is causally linked to the cognitive decline in Alzheimer's disease (AD). In addition to histone acetyltransferases (HATs) and histone deacetylases (HDACs), inhibitor of acetyltransferases (INHAT) can also regulate histone acetylation. As a key component of INHAT, level of ANP32A is selectively upregulated in the brain of AD patients. Here we investigated whether downregulating ANP32A can rescue AD-like synapse and memory deficits. METHODS: RFP-labeled lentiviral ANP32A-shRNA was infused stereotaxically into the hippocampal CA3 region of the human tau transgenic mice (termed htau)...
May 4, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/28466135/optimization-of-the-preparation-conditions-of-yerba-mate-tea-beverage-to-maximize-chlorogenic-acids-extraction
#14
Tayse Ferreira Ferreira da Silveira, Adriana Dillenburg Meinhart, Thaís Cristina Lima de Souza, Elenice Carla Emídio Cunha, Maria Rosa de Moraes, José Teixeira Filho, Helena Teixeira Godoy
The beverage obtained from the yerba mate tea, besides being the most consumed in Brazil, has high concentrations of chlorogenic acids. In this study, a central composite design was employed to establish the best infusion time, temperature and water volume to maximize the extraction of chlorogenic acids 5-caffeoylquinic (5CQ), 3.4-dicaffeoylquinic (3.4 DQ), 3.5-dicaffeoylquinic (3.5 DQ) and 4.5-dicaffeoylquinic (4.5 DQ), from the leaves and stems of yerba mate tea (beverage ready for consumption). Analyses were performed by high-performance liquid chromatography and the optimum conditions were obtained through the use of the desirability function of Derringer and Suich...
May 3, 2017: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/28458023/pioglitazone-improves-the-ability-of-learning-and-memory-via-activating-erk1-2-signaling-pathway-in-the-hippocampus-of-t2dm-rats
#15
F Gao, L Zang, D Y Wu, Y J Li, Q Zhang, H B Wang, G L Tian, Y M Mu
OBJECTIVE: To explore the correlation between effect of PIO (pioglitazone, PIO) on learning as well as memory and ERK1/2 (extracellular signal regulated kinase 1/2, ERK1/2) pathway in T2DM (type 2 diabetes mellitus, T2DM) rats, further to elucidate the potential mechanism of PIO in improvement of learning and memory. METHODS: 12-week-old male SD rats (number of 10 per group) were randomly divided into control group (CON), T2DM group (DM) and T2DM +PIO group (DM+PG)...
April 27, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28446482/secondary-parkinsonism-in-a-patient-of-psychogenic-polydipsia
#16
Rimesh Pal, Liza Das, Pinaki Dutta, Anil Bhansali
A 44-year-old man presented with history of slurring of speech, slowness in activities, abnormal posturing of the upper limbs and drooling of saliva from the mouth. He had a 5-yearlong history of compulsive water drinking, consuming 12-15 L of water every day. He was earlier evaluated for the same and found to have low serum sodium (126 mEq/L). Presently, he was admitted at a primary care facility with fever and altered sensorium. He was found to have serum sodium of 94 mEq/L. His sensorium improved with hypertonic saline infusion; however, after a lucid interval of 48 hours, he developed florid extrapyramidal symptoms...
April 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28442951/renal-water-conservation-determines-the-increase-in-body-weight-after-surgery-a-randomized-controlled-trial
#17
Robert G Hahn
BACKGROUND: The present study was undertaken to identify factors that correlate with the gain in body weight after surgery. METHODS: Twenty-one patients (median age of 49 years) were randomized to receive either Ringer × s acetate or 6% dextran 70 as their first infusion fluid during cholecystectomy or hysterectomy. Each patient's body weight was measured before the surgery and on the first postoperative morning. Blood and urine samples were analyzed for signs of stress, inflammation, and kidney injury...
April 2017: Saudi Journal of Anaesthesia
https://www.readbyqxmd.com/read/28439137/compatibility-of-ceftazidime-avibactam-ceftolozane-tazobactam-and-piperacillin-tazobactam-with-vancomycin-in-dextrose-5-in-water
#18
Kevin Meyer, Maressa Santarossa, Larry H Danziger, Eric Wenzler
Objectives: The compatibility of vancomycin with existing and novel β-lactam/β-lactamase inhibitors at clinically relevant concentrations in 5% dextrose in water has not been fully explored to date. Methods: Vancomycin concentrations tested ranged from 5 to 20 mg/mL. Ceftazidime-avibactam was tested at 8, 20, and 40 mg/mL, ceftolozane-tazobactam at 15 mg/mL, and piperacillin-tazobactam at 28 mg/mL. Compatibility of drug admixtures were tested via both simulated and actual y-site infusion. For the simulated y-site compatibility assessment, 1:1 mixtures of each respective drug were analyzed over 24 hours...
March 2017: Hospital Pharmacy
https://www.readbyqxmd.com/read/28427403/preoperative-carbohydrate-load-and-intraoperatively-infused-omega-3-polyunsaturated-fatty-acids-positively-impact-nosocomial-morbidity-after-coronary-artery-bypass-grafting-a-double-blind-controlled-randomized-trial
#19
Gibran Roder Feguri, Paulo Ruiz Lúcio de Lima, Danilo de Cerqueira Borges, Laura Ramos Toledo, Larissa Nadaf Batista, Thaís Carvalho E Silva, Neuber José Segri, José Eduardo de Aguilar-Nascimento
BACKGROUND: A strategy of limited preoperative fasting, with carbohydrate (CHO) loading and intraoperative infusion of omega-3 polyunsaturated fatty acids (ω-3 PUFA), has seldom been tried in cardiovascular surgery. Brief fasting, followed by CHO intake 2 h before anesthesia, may improve recovery from CABG procedures and lower perioperative vasoactive drug requirements. Infusion of ω-3 PUFA may reduce occurrences of postoperative atrial fibrillation (POAF) and shorten hospital stays...
April 20, 2017: Nutrition Journal
https://www.readbyqxmd.com/read/28426381/hyperbaric-oxygen-for-experimental-intracerebral-haemorrhage-systematic-review-and-stratified-meta-analysis
#20
Han-Jin Cui, Hao-Yu He, A-Li Yang, Hua-Jun Zhou, Tao Tang, Jie-Kun Luo
OBJECTIVE: Hyperbaric oxygen (HBO) is widely used in treating various neurological diseases. However, HBO for treatment of intracerebral haemorrhage (ICH) remains controversial, in either animal or clinical studies. Therefore, we conducted this systematic review and meta-analysis on studies describing the efficacy of HBO in animal models of ICH. METHODS: Studies were identified by searching mainstream databases through November 2015. The efficacy of HBO in animal models of ICH was assessed by changes in the brain water content (BWC), neurobehavioural outcome (NO) or both...
2017: Brain Injury: [BI]
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