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Volatile anesthetic

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https://www.readbyqxmd.com/read/28225890/the-anesthetic-agent-sevoflurane-attenuates-pulmonary-acute-lung-injury-by-modulating-apoptotic-pathways
#1
L Wang, Y Ye, H B Su, J P Yang
The objective of this study was to evaluate lung protection by the volatile anesthetic sevoflurane (SEVO), which inhibits apoptosis. Male Sprague-Dawley rats (250-280 g; n=18) were randomly divided into three groups. The LPS group received 5 mg/kg endotoxin (lipopolysaccharide), which induced acute lung injury (ALI). The control (CTRL) group received normal saline and the SEVO group received sevoflurane (2.5%) for 30 min after ALI was induced by 5 mg/kg LPS. Samples were collected for analysis 12 h after LPS...
February 20, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28224104/exertional-rhabdomyolysis-and-heat-stroke-beware-of-volatile-anesthetic-sedation
#2
REVIEW
Karel Heytens, Jan De Bleecker, Walter Verbrugghe, Jonathan Baets, Luc Heytens
In view of the enormous popularity of mass sporting events such as half-marathons, the number of patients with exertional rhabdomyolysis or exercise-induced heat stroke admitted to intensive care units (ICUs) has increased over the last decade. Because these patients have been reported to be at risk for malignant hyperthermia during general anesthesia, the intensive care community should bear in mind that the same risk of life-threatening rhabdomyolysis is present when these patients are admitted to an ICU, and volatile anesthetic sedation is chosen as the sedative technique...
February 4, 2017: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28220762/drug-detection-in-breath-non-invasive-assessment-of-illicit-or-pharmaceutical-drugs
#3
Phillip Trefz, Svend Kamysek, Patricia Fuchs, Pritam Sukul, Jochen Schubert, Wolfram Miekisch
Breath analysis not only holds great potential for the development of new non-invasive diagnostic methods, but also for the identification and follow up of drug levels in breath. This is of interest for both, forensic and medical science. On the one hand, the detection of drugs of abuse in exhaled breath - similar to the well-known breath alcohol tests - would be highly desirable as an alternative to blood or urine analysis in situations such as police controls for drugged driving. The noninvasive detection of drugs and their metabolites is thus of great interest in forensic science, especially since marijuana is becoming legalized in certain parts of the U...
February 21, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28190546/sevoflurane-attenuates-ischemia-reperfusion-injury-in-a%C3%A2-rat%C3%A2-lung%C3%A2-transplantation-model
#4
Akihiro Ohsumi, Katherine Marseu, Peter Slinger, Karen McRae, Hyunhee Kim, Zehong Guan, David M Hwang, Mingyao Liu, Shaf Keshavjee, Marcelo Cypel
BACKGROUND: Sevoflurane is one of the most commonly used volatile anesthetic agents with the fastest onset and offset, replacing isoflurane in modern anesthesiology. Preconditioning and postconditioning using volatile anesthetics can attenuate ischemia-reperfusion injury (IRI). However, no previous studies have evaluated the effect of sevoflurane in lung transplantation after cold ischemic injury. We aimed to study the effects of donor and recipient treatment with sevoflurane in a rat lung transplantation model...
February 9, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28183580/effect-of-total-intravenous-vs-volatile-anesthetics-on-intraoperatively-acquired-electrically-evoked-compound-action-potential-in-children-undergoing-cochlear-implant-surgery-a-randomized-prospective-study
#5
Ala A Alhowary, Khaled El-Radaideh, Anas Al-Rusan, Diab Bani Hani, Wail Khraise, Ahmad Al Omari, Firas Alzoubi
OBJECTIVE: The purpose of the present study was to compare the effects of inhalational anesthesia to those of total intravenous anesthesia on intraoperative electrically evoked compound action potential (e-ECAP) thresholds in children undergoing cochlear implantation. STUDY DESIGN: Randomized prospective study. SETTING: Tertiary referral teaching hospital. PATIENTS: Forty children aged 6 months to 17years with bilateral severe-to-profound sensorineural hearing loss and undergoing cochlear implantation were enrolled in the study...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28149876/volatile-anesthetics-for-lung-protection-a-bridge-between-operating-rooms-and-intensive-care-units
#6
EDITORIAL
Giovanni Landoni, Omar Saleh, Elena Scarparo, Alberto Zangrillo
No abstract text is available yet for this article.
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28115220/anti-rage-antibody-attenuates-isoflurane-induced-cognitive-dysfunction-in-aged-rats
#7
Chengmei Shi, Duan Yi, Zhengqian Li, Yongde Zhou, Yiyun Cao, Yan Sun, Dehua Chui, Xiangyang Guo
Several animal studies demonstrated that the volatile anesthetic isoflurane could influence the blood-brain barrier (BBB) integrity, which involved the cognitive impairment. Increasing evidence has also shown that the receptor for advanced glycation end-products (RAGE) played a major role in maintaining the integrity of BBB. The present study aimed to determine whether the RAGE-specific antibody protects against BBB disruption and cognitive impairment induced by isoflurane exposure in aged rats. 108 aged rats were randomly divided into four groups: (1) control group (Control); (2) 4h of 2% isoflurane exposure group (ISO); (3) RAGE antibody (20μL, 2...
January 20, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28111187/functional-and-oxygen-metabolic-photoacoustic-microscopy-of-the-awake-mouse-brain
#8
Rui Cao, Jun Li, Bo Ning, Naidi Sun, Tianxiong Wang, Zhiyi Zuo, Song Hu
A long-standing challenge in optical neuroimaging has been the assessment of hemodynamics and oxygen metabolism in the awake rodent brain at the microscopic level. Here, we report first-of-a-kind head-restrained photoacoustic microscopy (PAM), which enables simultaneous imaging of the cerebrovascular anatomy, total concentration and oxygen saturation of hemoglobin, and blood flow in awake mice. Combining these hemodynamic measurements allows us to derive two key metabolic parameters-oxygen extraction fraction (OEF) and the cerebral metabolic rate of oxygen (CMRO2)...
January 20, 2017: NeuroImage
https://www.readbyqxmd.com/read/28099463/the-differential-effects-of-anesthetics-on-bacterial-behaviors
#9
Matthew Chamberlain, Sophia Koutsogiannaki, Matthew Schaefers, Hasan Babazada, Renyu Liu, Koichi Yuki
Volatile anesthetics have been in clinical use for a long period of time and are considered to be promiscuous by presumably interacting with several ion channels in the central nervous system to produce anesthesia. Because ion channels and their existing evolutionary analogues, ion transporters, are very important in various organisms, it is possible that volatile anesthetics may affect some bacteria. In this study, we hypothesized that volatile anesthetics could affect bacterial behaviors. We evaluated the impact of anesthetics on bacterial growth, motility (swimming and gliding) and biofilm formation of four common bacterial pathogens in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28089560/critical-role-of-p2x7-receptors-in-the-neuroinflammation-and-cognitive-dysfunction-after-surgery
#10
Bin Zheng, Renchun Lai, Jun Li, Zhiyi Zuo
Postoperative cognitive dysfunction worsens patient outcome after surgery. Neuroinflammation is a critical neuropathological process for it. We determined the role of P2X7 receptors, proteins that participate in inflammatory response, in the neuroinflammation induction after surgery, and whether the choice of volatile anesthetics affects its occurrence. Eight-week old C57BL/6J or P2X7 receptor knockout male mice were subjected to right carotid arterial exposure under anesthesia with 1.8% isoflurane, 2.5% sevoflurane or 10% desflurane...
January 10, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28087784/interactions-between-zinc-and-allosteric-modulators-of-the-glycine-receptor
#11
Garrett L Cornelison, Anna W Daszkowski, Natasha C Pflanz, S John Mihic
The glycine receptor is a pentameric ligand-gated ion channel involved in fast inhibitory neurotransmission in the central nervous system. Zinc is an allosteric modulator of glycine receptor function, enhancing the effects of glycine at nM to low μM concentrations, and inhibiting its effects at higher concentrations. Low nM concentrations of contaminating zinc in electrophysiological buffers are capable of synergistically enhancing receptor modulation by other compounds such as ethanol. This suggests that, unless accounted for, previous studies of glycine receptor modulation were measuring the effects of modulator plus co-modulation by zinc on receptor function...
January 13, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28087295/postconditioning-induced-neuroprotection-mechanisms-and-applications-in-cerebral-ischemia
#12
REVIEW
Yan-Ying Fan, Wei-Wei Hu, Fang Nan, Zhong Chen
Ischemic postconditioning (PostC) is defined as a series of rapid intermittent interruptions of blood flow at the phase of reperfusion, which produces neuroprotection against cerebral ischemia/reperfusion injury via mobilizing the brain's own endogenous adaptive mechanisms. Now the concept of conventional ischemic PostC has been extended to limb remote ischemic PostC and chemical PostC with hypoxia, volatile anesthetic, CO2, etc. According to the different temporal profile of PostC, it is divided into rapid and delayed PostC...
January 10, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28067710/time-and-dose-dependent-effects-of-desflurane-in-sensitized-airways
#13
Jing Zhou, Sohshi Iwasaki, Michiaki Yamakage
BACKGROUND: Although the bronchodilatory actions of volatile anesthetics, such as halothane, isoflurane, and sevoflurane, have been well documented in previous studies, the properties of desflurane remain controversial. The aim of this study was to investigate the effects of desflurane at different concentrations and durations in an ovalbumin-sensitized guinea pig model of airway hyper-responsiveness. METHODS: Ovalbumin-sensitized animals (n = 176) were randomly assigned to 5 groups according to the minimum alveolar concentration (MAC) of desflurane they received: 0...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28049865/adherence-of-volatile-propofol-to-various-types-of-plastic-tubing
#14
F Maurer, D J Lorenz, G Pielsticker, T Volk, D I Sessler, J I Baumbach, S Kreuer
Propofol is an intravenous anesthetic. Currently, it is not possible to routinely measure blood concentration of the drug in real time. However, multi-capillary column ion-mobility spectrometry of exhaled gas can estimate blood propofol concentration. Unfortunately, adhesion of volatile propofol on plastic materials complicates measurements. Therefore, it is necessary to consider the extent to which volatile propofol adheres to various plastics used in sampling tubing. Perfluoralkoxy (PFA), polytetrafluorethylene (PTFE), polyurethane (PUR), silicone, and Tygon tubing were investigated in an experimental setting using a calibration gas generator (HovaCAL)...
January 23, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28045949/influence-of-volatile-anesthesia-on-the-release-of-glutamate-and-other-amino-acids-in-the-nucleus-accumbens-in-a-rat-model-of-alcohol-withdrawal-a-pilot-study
#15
Thomas Seidemann, Claudia Spies, Rudolf Morgenstern, Klaus-Dieter Wernecke, Nicolai Netzhammer
BACKGROUND: Alcohol withdrawal syndrome is a potentially life-threatening condition, which can occur when patients with alcohol use disorders undergo general anesthesia. Excitatory amino acids, such as glutamate, act as neurotransmitters and are known to play a key role in alcohol withdrawal syndrome. To understand this process better, we investigated the influence of isoflurane, sevoflurane, and desflurane anesthesia on the profile of excitatory and inhibitory amino acids in the nucleus accumbens (NAcc) of alcohol-withdrawn rats (AWR)...
2017: PloS One
https://www.readbyqxmd.com/read/28045693/kelch-like-ech-associated-protein-1-dependent-nuclear-factor-e2-related-factor-2-activation-in-relation-to-antioxidation-induced-by-sevoflurane-preconditioning
#16
Min Cai, Li Tong, Beibei Dong, Wugang Hou, Likai Shi, Hailong Dong
BACKGROUND: The authors have reported that antioxidative effects play a crucial role in the volatile anesthetic-induced neuroprotection. Accumulated evidence shows that endogenous antioxidation could be up-regulated by nuclear factor-E2-related factor 2 through multiple pathways. However, whether nuclear factor-E2-related factor 2 activation is modulated by sevoflurane preconditioning and, if so, what is the signaling cascade underlying upstream of this activation are still unknown. METHODS: Sevoflurane preconditioning in mice was performed with sevoflurane (2...
March 2017: Anesthesiology
https://www.readbyqxmd.com/read/28011884/pharmacogenetics-and-pathophysiology-of-cacna1s-mutations-in-malignant-hyperthermia
#17
Teresa Ann Beam, Emily F Loudermilk, David F Kisor
A review of the pharmacogenetics (PGt) and pathophysiology of calcium voltage-gated channel subunit alpha1 S (CACNA1S) mutations in malignant hyperthermia susceptibility type 5 (MHS5; MIM #60188) is presented. Malignant hyperthermia (MH) is a life-threatening hypermetabolic state of skeletal muscle usually induced by volatile, halogenated anesthetics and/or the depolarizing neuromuscular blocker succinylcholine. In addition to ryanodine receptor 1 (RYR1) mutations, several CACNA1S mutations are known to be risk factors for increased susceptibility to MH (MHS)...
December 23, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/28009721/propofol-provides-cardiac-protection-by-suppressing-the-proteasome-degradation-of-caveolin-3-in-ischemic-reperfused-rat-hearts
#18
Afang Zhu, Xin Wei, Yali Zhang, Tao You, Shanglong Yao, Shiying Yuan, Haodong Xu, Faqian Li, Weike Mao
The mechanisms underlying propofol's cardioprotective role remain elusive. Caveolin-3 (Cav-3) has been shown to mediate both opioids- and volatile anesthetics-induced cardioprotection against ischemia/reperfusion (I/R) injury. We hypothesize that the cardioprotective role of propofol is mediated through Cav-3 and its regulation of PI3K/Akt/GSK3β signal pathway. Rats or H9c2 cardiomyocytes were exposed to propofol prior to I/R or simulated ischemia/reperfusion (SI/R). Propofol pretreatment significantly decreased left ventricle (LV) infarct size in vivo (P < 0...
December 17, 2016: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28003439/prolonged-exposure-to-volatile-anesthetic-isoflurane-worsens-the-outcome-of-polymicrobial-abdominal-sepsis
#19
Sophia Koutsogiannaki, Matthew M Schaefers, Toshiaki Okuno, Mai Ohba, Takehiko Yokomizo, Gregory P Priebe, James A DiNardo, Soriano G Sulpicio, Koichi Yuki
Sepsis continues to result in high morbidity and mortality. General anesthesia is often administered to septic patients, but the impacts of general anesthesia on host defense are not well understood. General anesthesia can be given by volatile and intravenous anesthetics. Our previous in vitro study showed that volatile anesthetic isoflurane directly inhibits leukocyte function-associated antigen-1 (LFA-1) and macrophage-1 antigen (Mac-1), critical adhesion molecules on leukocytes. Thus, the role of isoflurane exposure on in vivo LFA-1 and Mac-1 function was examined using polymicrobial abdominal sepsis model in mice...
December 20, 2016: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/27989695/the-genetics-of-isoflurane-induced-developmental-neurotoxicity
#20
Hyo-Seok Na, Nicole L Brockway, Katherine R Gentry, Elyce Opheim, Margaret M Sedensky, Philip G Morgan
INTRODUCTION: Neurotoxicity induced by early developmental exposure to volatile anesthetics is a characteristic of organisms across a wide range of species, extending from the nematode C. elegans to mammals. Prevention of anesthetic-induced neurotoxicity (AIN) will rely upon an understanding of its underlying mechanisms. However, no forward genetic screens have been undertaken to identify the critical pathways affected in AIN.By characterizing such pathways, we may identify mechanisms to eliminate isoflurane induced AIN in mammals...
October 28, 2016: Neurotoxicology and Teratology
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