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https://www.readbyqxmd.com/read/29787611/evaluation-of-anaesthetic-protocols-for-laboratory-adult-zebrafish-danio-rerio
#1
Tânia Martins, Enoque Diniz, Luís M Félix, Luís Antunes
In the last decades, the use of zebrafish (Danio rerio) in biomedical research has increased. Anaesthesia is daily used in fish during experimental procedures to avoid discomfort, stress or pain. Also, fish welfare and the reliability of results can be compromised if an unsuitable anaesthetic protocol is used. Therefore, we aimed to refine anaesthetic protocols to be used in adult zebrafish by evaluating the efficacy of different anaesthetics, used alone or in combination. For that, zebrafish were randomly assigned to 8 different groups: 100 μg/mLMS-222 (MS); 0...
2018: PloS One
https://www.readbyqxmd.com/read/29768328/efficacy-and-safety-of-etomidate-midazolam-for-screening-colonoscopy-in-the-elderly-a-prospective-double-blinded-randomized-controlled-study
#2
Jung Min Lee, Geeho Min, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yoon Tae Jeen, Hoon Jai Chun, Hong Sik Lee, Chang Duck Kim, Jong-Jae Park, Beom Jae Lee, Seong Ji Choi, Woojung Kim
BACKGROUND AND AIMS: Recent studies have shown that etomidate is associated with fewer serious adverse events than propofol and has a noninferior sedative effect. We investigated whether etomidate-midazolam is associated with fewer cardiopulmonary adverse events and has noninferior efficacy compared to propofol-midazolam for screening colonoscopy in the elderly. METHODS: A prospective, single-center, double-blinded, randomized controlled trial was performed. Patients aged over 65 years who were scheduled to undergo screening colonoscopy were randomized to receive either etomidate or propofol based on midazolam...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29749444/effects-of-intravenous-anesthetics-on-the-phosphorylation-of-camp-response-element%C3%A2-binding-protein-in-hippocampal-slices-of-adult-mice
#3
Haiying Gao, Lingyu Zhang, Zhenyi Chen, Shuncui Liu, Qinghong Zhang, Bingxi Zhang
cAMP response‑element binding protein (CREB) functions in hippocampal synaptic plasticity and memory formation. However, it remains unknown whether intravenous anesthetics modulate CREB. The present study aimed to examine the effects of intravenous anesthetics on CREB phosphorylation in the mouse hippocampus. CREB phosphorylation was examined in hippocampal slices with and without pharmacological or intravenous anesthetics via immunoblotting. In a dose‑response experiment, the concentrations of intravenous anesthetics ranged from 10‑9 to 10‑4 mol/l for 1 h...
April 27, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29744247/hypobaric-unilateral-spinal-anaesthesia-versus-general-anaesthesia-in-elderly-patients-undergoing-hip-fracture-surgical-repair-a-prospective-randomised-open-trial
#4
Pascal Meuret, Lionel Bouvet, Benoit Villet, Mohamed Hafez, Bernard Allaouchiche, Emmanuel Boselli
Objective: Intraoperative hypotension during hip fracture surgery is frequent in the elderly. No study has compared the haemodynamic effect of hypobaric unilateral spinal anaesthesia (HUSA) and standardised general anaesthesia (GA) in elderly patients undergoing hip fracture surgical repair. Methods: We performed a prospective, randomised open study, including 40 patients aged over 75 years, comparing the haemodynamic effects of HUSA (5 mg isobaric bupivacaine with 5 μg sufentanil and 1 mL sterile water) and GA (induction with etomidate/remifentanil and maintenance with desflurane/remifentanil)...
April 2018: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/29744071/etomidate-in-the-control-of-severe-cushing-s-syndrome-by-neuroendocrine-carcinoma
#5
Alfredo Adolfo Reza-Albarrán, Gerson Geovany Andino Ríos, Laura Gabriela Gómez Herrera
Etomidate is a very effective drug in severe Cushing's syndrome that is refractory to ketoconazol. Control of the serum cortisol levels in ectopic Cushing's syndrome can be obtained with infusion rates much lower than those used in anesthesia, without respiratory side effects.
May 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29673523/anesthetic-drug-discovery-and-development-a-case-study-of-novel-etomidate-analogs
#6
Megan McGrath, Douglas E Raines
All currently available general anesthetic agents possess potentially lethal side effects requiring their administration by highly trained clinicians. Among these agents is etomidate, a highly potent imidazole-based intravenous sedative-hypnotic that deleteriously suppresses the synthesis of adrenocortical steroids in a manner that is both potent and persistent. We developed two distinct strategies to design etomidate analogs that retain etomidate's potent hypnotic activity, but produce less adrenocortical suppression than etomidate...
2018: Methods in Enzymology
https://www.readbyqxmd.com/read/29643630/comparison-of-pretreatment-with-dexmedetomidine-with-midazolam-for-prevention-of-etomidate-induced-myoclonus-and-attenuation-of-stress-response-at-intubation-a-randomized-controlled-study
#7
Swarnendu Dey, Meenakshi Kumar
Background and Aims: Myoclonus is a common problem during induction of anesthesia with etomidate. A variety of drugs have been used to decrease the incidence of myoclonus. In this study we compared the effects of dexmedetomidine and midazolam pretreatment on the incidence of etomidate induced myoclonus. We also studied the effects of these drugs on attenuation of stress response at laryngoscopy and intubation on induction with etomidate. Material and Methods: Eighty adult patients (18 to 60 years age) of either sex, American Society of Anestheiologists physical status I and II undergoing elective general surgeries under general anesthesia were randomly allocated into two groups...
January 2018: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29628594/an-unusual-case-of-a-parturient-with-uncorrected-pentalogy-of-fallot-presenting-for-elective-cesarean-section-delivery-of-twins
#8
Ying Ci Ho, Sek Koon Boey, Abey Matthew Varughese Mathews, Hooi Geok See, Nian Chih Hwang
We present a 31-year-old primigravida with uncorrected pentalogy of Fallot, pregnant with monochorionic-diamniotic twins, undergoing elective lower segment cesarean section at 36 weeks gestation. Preoperative workup included a transthoracic echocardiogram which revealed a large ventricular septal defect of 1.8 cm with bidirectional shunting, a moderate size atrial septal defect of 1.8 cm with predominant left-to-right shunting, an overriding aorta, moderate right ventricular hypertrophy, and severe pulmonary valve stenosis...
January 2018: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/29572733/williams-syndrome-and-anesthesia-for-non-cardiac-surgery-high-risk-can-be-mitigated-with-appropriate-planning
#9
Morgan L Brown, Viviane G Nasr, Rebecca Toohey, James A DiNardo
Patients with Williams syndrome are considered at high risk for anesthesia-related adverse events. At our institution, all William syndrome patients undergoing cardiac surgical, cardiac catheterization/interventional procedures, and cardiac imaging studies are cared for by cardiac anesthesiologists. All William syndrome patients undergoing non-cardiac surgical, interventional, or imaging studies are cared for by main operating room pediatric anesthesiologists with consultative input from a cardiac anesthesiologist...
March 23, 2018: Pediatric Cardiology
https://www.readbyqxmd.com/read/29555009/comparison-of-etomidate-benzocaine-and-ms222-anesthesia-with-and-without-subsequent-flunixin-meglumine-analgesia-in-african-clawed-frogs-xenopus-laevis
#10
Briony D Smith, Krystal J Vail, Gwendolyn L Carroll, Maggie C Taylor, Nicholas D Jeffery, Tracy H Vemulapalli, James J Elliott
Often few alternative anesthetics for exotic species are available, due to the small numbers of these animals used in research. In this study, we evaluated the depth and duration of anesthesia in Xenopus laevis after their immersion in 3 doses of etomidate (15, 22.5, and 30 mg/L) and in 3 doses of benzocaine (0.1%, 0.5%, and 1%) compared with the 'gold standard,' tricaine methanesulfonate (MS222; 2 g/L). We then chose an optimal dose for each alternative anesthetic according to induction time, duration of surgical plane, and time to complete recovery...
March 1, 2018: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/29536782/oxycodone-for-prevention-of-etomidate-induced-myoclonus-a-randomized-double-blind-controlled-trial
#11
Wei Wang, Jie Lv, Qi Wang, Lei Yang, Wanyou Yu
Objective This study was performed compare the effectiveness of oxycodone and fentanyl in reducing the incidence and severity of etomidate-induced myoclonus. Methods In total, 162 patients with an American Society of Anesthesiologists physical status of I or II were assigned at random to three groups. Patients assigned to Group O received 0.1 mg/kg of oxycodone (n = 54), those assigned to Group F were given 1 µg/kg of fentanyl (n = 54), and those assigned to Group S were given an equal volume of saline intravenously 2 minutes prior to administration of 0...
May 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29491517/comparison-of-different-doses-of-intravenous-lignocaine-on-etomidate-induced-myoclonus-a-prospective-randomised-and-placebo-controlled-study
#12
Priyanka Gupta, Mayank Gupta
Background and Aims: Etomidate-induced myoclonus (EM) is observed in 50%-80% of unpremedicated patients. Low-dose lignocaine has been shown to attenuate but not abolish the EM. The aim of this prospective, randomised controlled study was to compare the different doses of lignocaine on the incidence and severity of EM. Methods: Two hundred adult patients were randomly assigned into four groups to receive saline placebo (Group I) or IV lignocaine 0.5 mg/kg (Group II), 1 mg/kg (Group III) or 1...
February 2018: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/29476378/impact-of-inducing-general-anesthesia-with-propiscin-etomidate-on-the-physiology-and-health-of-european-perch-perca-fluviatilis-l
#13
Maciej Rożyński, Krystyna Demska-Zakęś, Agnieszka Sikora, Zdzisław Zakęś
The aim of the study was to describe the course and timing of the different stages of anesthesia induced with Propiscin (etomidate) on juvenile European perch (experiment I) and to describe the effect of immersing specimens of this species had on selected hematological and biochemical parameters (experiment II). The study was conducted on material with body weights (BW) of 162.98 (experiment I) and 171.60 g (experiment II). In experiment I, general anesthesia was induced with two different anesthetic concentrations (1 or 2 ml l-1 ; anesthesia time 10 min)...
February 23, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29454619/delineation-of-the-functional-properties-and-the-mechanism-of-action-of-aa29504-an-allosteric-agonist-and-positive-allosteric-modulator-of-gaba-a-receptors
#14
Emma Rie Olander, Nawid Madjroh, Lennart Bunch, Pella Cecilia Söderhielm, Anders A Jensen
The retigabine analog 2-amino-4-[(2,4,6-trimethylbenzylamino)-phenyl]-carbamic acid ethyl ester (AA29504) is a positive allosteric modulator (PAM) of γ-aminobutyric acidA receptors (GABAA Rs), and the modulator has been used in ex vivo/in vivo studies to probe the physiological roles of native δ-containing GABAA Rs. In this study, the functional properties and mode of action of AA29504 were investigated at human GABAA Rs expressed in Xenopus oocytes by two-electrode voltage clamp electrophysiology. AA29504 was found to be an allosteric GABAA R agonist displaying low intrinsic activities at 3-30 μM...
April 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29452806/steroid-administration-after-anaesthetic-induction-with-etomidate-does-not-reduce-in-hospital-mortality-or-cardiovascular-morbidity-after-non-cardiac-surgery
#15
R Komatsu, J You, S Rajan, Y Kasuya, D I Sessler, A Turan
BACKGROUND: We tested the primary hypothesis that corticosteroid administration after etomidate exposure reduces a composite of in-hospital mortality and cardiovascular morbidity after non-cardiac surgery. METHODS: We evaluated ASA physical status III and IV patients who had non-cardiac surgery with general anaesthesia at the Cleveland Clinic. Amongst 4275 patients in whom anaesthesia was induced with etomidate, 804 were also given steroid intraoperatively, mostly dexamethasone at a median dose of 6 mg...
March 2018: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29432502/comparison-of-the-effect-of-intravenous-anesthetics-used-for-anesthesia-during-electroconvulsive-therapy-on-the-hemodynamic-safety-and-the-course-of-ect
#16
REVIEW
Rafał Wojdacz, Łukasz Święcicki, Anna Antosik-Wójcińska
Electroconvulsive therapy (ECT) is the treatment method widely used in psychiatric disorders such as depression, bipolar disorder, schizophrenia and schizoaffective disorder. The advantage of ECT is therapeutic response that occurs significantly earlier than during pharmacotherapy. Initially ECTwas used without anesthesia. Then, in the 1950s procedures with general anesthesia were introduced to reduce the complications that may occur during a seizure caused by ECT, such as broken bones, teeth, tendon rupture, muscle damage...
December 30, 2017: Psychiatria Polska
https://www.readbyqxmd.com/read/29416230/etomidate-derivatives-novel-pharmaceutical-agents-in-anesthesia
#17
REVIEW
Raymond J Malapero, Michael P Zaccagnino, Ethan Y Brovman, Alan David Kaye, Richard D Urman
Etomidate is an imidazole derivative that possesses important sedative properties employed in anesthesia practice, however, etomidate has a number of well-know side effects which limit its use in certain subpopulations and over long periods of time, mostly related to dose-dependent adrenal suppression. This review focuses on novel etomidate derivatives with an emphasis on pharmacological properties which afford improved safety profile and potentially desirable clinical effects. The pharmacology and clinical investigation of some of these etomidate derivatives, e...
October 2017: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/29413725/current-practices-and-safety-of-medication-use-during-rapid-sequence-intubation
#18
Christine M Groth, Nicole M Acquisto, Tina Khadem
PURPOSE: Characterize medication practices during and immediately after rapid sequence intubation (RSI) by provider/location and evaluate adverse drug events. MATERIALS AND METHODS: This was a multicenter, observational, cross-sectional study of adult and pediatric intensive care unit and emergency department patients over a 24-h period surrounding first intubation. RESULTS: A total of 404 patients from 34 geographically diverse institutions were included (mean age 58 ± 22 years, males 59%, pediatric 8%)...
June 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29352320/high-level-production-and-purification-in-a-functional-state-of-an-extrasynaptic-gamma-aminobutyric-acid-type-a-receptor-containing-%C3%AE-4%C3%AE-3%C3%AE-subunits
#19
Xiaojuan Zhou, Rooma Desai, Yinghui Zhang, Wojciech J Stec, Keith W Miller, Youssef Jounaidi
The inhibitory γ-aminobutyric acid type A receptors are implicated in numerous physiological processes, including cognition and inhibition of neurotransmission, rendering them important molecular targets for many classes of drugs. Functionally, the entire GABAAR family of receptors can be subdivided into phasic, fast acting synaptic receptors, composed of α-, β- and γ-subunits, and tonic extrasynaptic receptors, many of which contain the δ-subunit in addition to α- and β-subunits. Whereas the subunit arrangement of the former group is agreed upon, that of the αβδ GABAARs remains unresolved by electrophysiological and pharmacological research...
2018: PloS One
https://www.readbyqxmd.com/read/29324898/the-etomidate-analog-et-26-hcl-retains-superior-myocardial-performance-comparisons-with-etomidate-in-vivo-and-in-vitro
#20
COMPARATIVE STUDY
Xingxing Liu, Haibo Song, Jun Yang, Cheng Zhou, Yi Kang, Linghui Yang, Jin Liu, Wensheng Zhang
OBJECTIVE: (R)-2-methoxyethyl1-(1-phenylethyl)-1H-imidazole-5-carboxylate hydrochloride (ET-26 HCl) is a novel etomidate analogue. The purpose of this study was to characterize whether ET-26 HCl could retain the superior myocardial performance of etomidate in vivo and in vitro. METHODS: In vivo, the influence of ET-26 HCl and etomidate on the cardiac function of dogs was confirmed using echocardiography and electrocardiogram. In vitro, a Langendorff preparation was used to examine direct myocardial performance in isolated rat hearts, and a whole-cell patch-clamp technique was used to study effects on the human ether-a-go-go-related gene (hERG) channel...
2018: PloS One
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