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Animal anesthesia

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https://www.readbyqxmd.com/read/28920785/detomidine-and-butorphanol-for-standing-sedation-in-a-range-of-zoo-kept-ungulate-species
#1
Tim Bouts, Joanne Dodds, Karla Berry, Abdi Arif, Polly Taylor, Andrew Routh, Frank Gasthuys
General anesthesia poses risks for larger zoo species, like cardiorespiratory depression, myopathy, and hyperthermia. In ruminants, ruminal bloat and regurgitation of rumen contents with potential aspiration pneumonia are added risks. Thus, the use of sedation to perform minor procedures is justified in zoo animals. A combination of detomidine and butorphanol has been routinely used in domestic animals. This drug combination, administered by remote intramuscular injection, can also be applied for standing sedation in a range of zoo animals, allowing a number of minor procedures...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28916246/pre-clinical-toxicology-considerations-for-vaccine-development
#2
REVIEW
Nabil Al-Humadi
Vaccine development requires pre-clinical toxicology studies, following good laboratory practice (GLP), before first in human (phase I) use. Many factors are critical in the final outcome of any pre-clinical toxicology study. The study design is one of these critical factors and should be carefully planned to avoid any false negative and/or false positive results. Preparation is another most critical factor in a successful study. Major changes in any procedure during the course of study should be avoided by all means...
September 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28915219/intrabronchial-catheter-resuscitation-for-respiratory-and-cardiorespiratory-arrest
#3
Jeffrey S Wolf, Andrea Hebert, Pablo Sanchez, Marniker Wijesinha, Scott Shapiro, Robert Morales, Aldo T Iacono
INTRODUCTION: We sought to determine whether intrabronchial oxygenation would provide adequate gas exchange during both anesthesia induced apneic and cardiopulmonary arrest and cardiac massage (CPR). METHODS: Ten pigs underwent general anesthesia with mechanical ventilation. Blood gases were measured in each animal at 4 min intervals for up to 28 min. An intrabronchial catheter (4 L/min O2) was inserted through an endotracheal tube after respirator cessation. Group A animals (6) were resuscitated with the catheter but without CPR...
September 14, 2017: Shock
https://www.readbyqxmd.com/read/28914170/the-investigation-of-the-effects-of-topiramate-on-the-hypothalamic-levels-of-fat-mass-obesity-associated-protein-and-neuropeptide-y-in-obese-female-rats
#4
Işınsu Alkan, Berrin Zuhal Altunkaynak, Gamze Altun, Erkan Erener
OBJECTIVE: The aim of the present study is to investigate the effects of topiramate on the fat mass/obesity-associated protein (FTO) and on the neuropeptide Y (NPY) level in the hypothalamus depending on the recently increased prevalence of obesity. METHOD: In this study, twenty-four female rats were divided into four equal groups: Non-obese control, obese control, non-obese topiramate, and obese topiramate. Obese groups were fed with a 40% high-fat diet. At the end of the 9th week, the drug treatment started and the subjects were treated with topiramate once a day for 6 weeks...
September 15, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28913662/effects-of-short-term-exposure-to-sevoflurane-on-the-survival-proliferation-apoptosis-and-differentiation-of-neural-precursor-cells-derived-from-human-embryonic-stem-cells
#5
Jin-Woo Park, Mi-Sun Lim, So Yeon Ji, Myung Soo Cho, Seong-Joo Park, Sung-Hee Han, Jin-Hee Kim
PURPOSE: Data from animal experiments suggest that exposure to general anesthetics in early life inhibits neurogenesis and causes long-term memory deficit. Considering short operating times and the popularity of sevoflurane in pediatric anesthesia, it is important to verify the effects of short-period exposure to sevoflurane on the developing brain. METHODS: We measured the effects of short-term exposure (2 h) to 3%, 6%, or 8% sevoflurane, the most commonly used anesthetic, on neural precursor cells derived from human embryonic stem cells, SNUhES32...
September 14, 2017: Journal of Anesthesia
https://www.readbyqxmd.com/read/28904261/chemical-immobilization-of-free-ranging-and-captive-sunda-clouded-leopards-neofelis-diardi-with-two-anesthetic-protocols-medetomidine-ketamine-and-tiletamine-zolazepam
#6
Fernando Nájera, Andrew J Hearn, Joanna Ross, Diana A Ramírez Saldivar, Meaghan N Evans, Sergio Guerrero-Sánchez, Senthilvel K S S Nathan, Ignacio de Gaspar Simón, David W Macdonald, Benoit Goossens, Luis Revuelta Rueda
There is currently no available information regarding the veterinary management of Sunda clouded leopards (Neofelis diardi), either in captivity or in the wild. In this study, 12 Sunda clouded leopards were anesthetized between January 2008 and February 2014 for medical exams, and/or GPS-collaring. Seven wild-caught individuals were kept in captivity and 5 free-ranging animals were captured by cage traps. Two anesthesia combinations were used: medetomidine-ketamine (M-K) or tiletamine-zolazepam (T-Z). Atipamezole (0...
September 14, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28903826/comparison-of-6-injectable-anesthetic-regimens-and-isoflurane-in-gray-short-tailed-opossums-monodelphis-domestica
#7
Grace J Barnett, Ian J Barnett, Steven R Wilson, Peter C Smith
Gray short-tailed opossums are used in a wide variety of research in the areas of developmental biology, oncology, immunology, and comparative biology. Despite many frequent experimental manipulations of these animals under anesthesia, few studies to date have characterized the effects of anesthesia in this species. Our aim was to identify safe and effective injectable anesthetic combinations using ketamine and xylazine or ketamine and dexmedetomidine at doses of 40 mg/kg to 100 mg/kg for ketamine, 5 mg/kg to 10 mg/kg for xylazine, and 0...
September 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28902940/bacterial-translocation-and-mortality-on-rat-model-of-intestinal-ischemia-and-obstruction
#8
Rafael Izar Domingues da Costa, Roberto Rasslan, Marcia Kiyomi Koike, Edivaldo Massazo Utiyama, Edna Frasson de Souza Montero
Purpose: To develop an experimental model of intestinal ischemia and obstruction followed by surgical resection of the damaged segment and reestablishment of intestinal transit, looking at bacterial translocation and survival. Methods: After anesthesia, Wistar rats was subject to laparotomy, intestinal ischemia and obstruction through an ileal ligature 1.5cm of ileum cecal valve; and the mesenteric vessels that irrigate upstream of the obstruction site to approximately 7 to 10 cm were ligated...
August 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28895060/cerebral-tissue-oxidative-ischemia-reperfusion-injury-in-connection-with-experimental-cardiac-arrest-and-cardiopulmonary-resuscitation-effect-of-mild-hypothermia-and-methylene-blue
#9
Lars Wiklund, Ranjana Patnaik, Aruna Sharma, Adriana Miclescu, Hari S Sharma
The present investigation is an expansion of previous studies which all share a basic experimental protocol of a porcine-induced cardiac arrest (CA) of 12 min followed by 8 min of cardiopulmonary resuscitation (CPR), different experimental treatments (immediate as well as postponed induced mild hypothermia and administration of much or less cool intravenous fluids), and a follow-up period of 3 h after which the animals were sacrificed. Another group of animals was studied according to the same protocol after 12-min CA and "standard CPR...
September 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28895047/biochemical-hematological-and-pathological-related-healing-effects-of-elaeagnus-angustifolia-hydroalcoholic-extract-in-5-fluorouracil-induced-oral-mucositis-in-male-golden-hamster
#10
Omid Koohi-Hosseinabadi, Zahra Ranjbar, Masood Sepehrimanesh, Azadeh AndisheTadbir, Seyedeh Leila Poorbaghi, Hajar Bahranifard, Nader Tanideh, Maryam Koohi-Hosseinabadi, Aida Iraji
Oral mucositis (OM) is one of the cancer chemotherapy-related side effects which can affect the quality of life of affected patients. This study was designed to investigate the healing effect of Elaeagnus angustifolia in 5-flurouracil (5-FU)-induced OM in golden hamster. Fifty-six adult male golden hamsters received three intraperitoneal injections of 5-FU at a dose of 60 mg/kg on days 0, 5, and 10. The cheek pouch mucosa was scratched superficially under local anesthesia. Then, two horizontal scratches were made across the everted cheek pouch on days 3 and 4...
September 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28891072/stable-control-of-physiological-parameters-but-not-infection-in-preterm-lambs-maintained-on-ex-vivo-uterine-environment-therapy
#11
Yuichiro Miura, Haruo Usuda, Shimpei Watanabe, Eleanor Woodward, Masatoshi Saito, Gabrielle C Musk, Suhas G Kallapur, Shinichi Sato, Ryuta Kitanishi, Tadashi Matsuda, John P Newnham, Sarah J Stock, Matthew W Kemp
Ex vivo uterine environment (EVE) therapy is an experimental neonatal intensive care strategy wherein gas exchange is performed by membranous oxygenators attached to the umbilical vessels. Our aim was to assess the ability of a newly refined EVE system to maintain key physiological parameters in preterm lambs within optimal ranges for 48 h. EVE group; n = 6: Preterm lambs were delivered under general anesthesia at 115 ± 2 days of gestational age. Animals were submerged in a bath of artificial amniotic fluid on EVE therapy for 48 h...
September 11, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28890046/effect-of-multiple-neonatal-sevoflurane-exposures-on-hippocampal-apolipoprotein-e%C3%A2-levels-and-learning-and-memory-abilities
#12
Junli Jiang, Chunchun Tang, Juanjuan Ren, Chao Zhang, Liang Dong, Zhaoqiong Zhu
BACKGROUND: Sevoflurane anesthesia is widely used in pediatric patients. In this study, we investigated whether early multiple exposures to sevoflurane induced cognitive dysfunction by altering the hippocampal expression of ApoE later in development. METHODS: Sprague-Dawley rats were exposed to 2.6% sevoflurane at postnatal day 7 (P7), P14, and P21 for 2 h. The ability of learning and memory was assessed using the Morris water maze at P37 and P97. The hippocampal volume was measured by magnetic resonance imaging (MRI) at P37 and P97...
August 31, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28888583/food-and-drug-administration-warning-on-anesthesia-and-brain-development-implications-for-obstetric-and-fetal-surgery
#13
Olutoyin A Olutoye, Byron Wycke Baker, Michael A Belfort, Oluyinka O Olutoye
There has been growing concern about the detrimental effects of certain anesthetic agents on the developing brain. Preclinical studies in small animal models as well as nonhuman primates suggested loss or death of brain cells and consequent impaired neurocognitive function following anesthetic exposure in neonates and late gestation fetuses. Human studies in this area are limited and currently inconclusive. On Dec. 14, 2016, the US Food and Drug Administration issued a warning regarding impaired brain development in children following exposure to certain anesthetic agents used for general anesthesia, namely the inhalational anesthetics isoflurane, sevoflurane, and desflurane, and the intravenous agents propofol and midazolam, in the third trimester of pregnancy...
September 6, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28882370/caudal-epidural-anesthesia-in-mares-after-bicarbonate-addition-to-a-lidocaine-epinephrine-combination
#14
Patricia C Duarte, Cahuê F R Paz, Alvaro P L Oliveira, Thairê P Maróstica, Leticia O Cota, Rafael R Faleiros
OBJECTIVE: To investigate the nociceptive and clinical effects of buffering a lidocaine-epinephrine solution with sodium bicarbonate in caudal epidural block in mares. STUDY DESIGN: Prospective randomized controlled trial. ANIMALS: Six mixed-breed mares weighing 350-440 kg. METHODS: Each animal was administered two caudal epidural injections, 72 hours apart, using different solutions prepared immediately before injection...
January 11, 2017: Veterinary Anaesthesia and Analgesia
https://www.readbyqxmd.com/read/28881313/lc-ms-ms-method-for-preclinical-pharmacokinetic-study-of-qx-oh-a-novel-long-acting-local-anesthetic-in-sciatic-nerve-blockade-in-rats
#15
YuJun Zhang, DeYing Gong, QingShan Zheng, Jin Liu, WenSheng Zhang
QX-OH, a new synthetic local anesthetic, produced concentration-dependent, reversible, and long-acting local anesthesia in animal models, with moderate local toxicity. As part of preclinical research for drug development, we developed and validated a method for the determination of QX-OH in the plasma, muscle, and sciatic nerve using liquid chromatography-mass spectrometry. After a simple protein precipitation procedure, analysis was performed on an Extend C18 column (100mm×3mm, 3.5μm) by isocratic elution with 0...
July 29, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28875429/regional-differences-in-cerebral-glucose-metabolism-after-cardiac-arrest-and-resuscitation-in-rats-using-18-f-fdg-positron-emission-tomography-and-autoradiography
#16
Alessandro Putzu, Silvia Valtorta, Giuseppe Di Grigoli, Matthias Haenggi, Sara Belloli, Antonio Malgaroli, Marco Gemma, Giovanni Landoni, Luigi Beretta, Rosa Maria Moresco
BACKGROUND: Cardiac arrest is an important cause of morbidity and mortality. Brain injury severity and prognosis of cardiac arrest patients are related to the cerebral areas affected. To this aim, we evaluated the variability and the distribution of brain glucose metabolism after cardiac arrest and resuscitation in an adult rat model. METHODS: Ten rats underwent 8-min cardiac arrest, induced with a mixture of potassium and esmolol, and resuscitation, performed with chest compressions and epinephrine...
September 5, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28872484/effect-of-xenon-anesthesia-compared-to-sevoflurane-and-total-intravenous-anesthesia-for-coronary-artery-bypass-graft-surgery-on-postoperative-cardiac-troponin-release-an-international-multicenter-phase-3-single-blinded-randomized-noninferiority-trial
#17
Jan Hofland, Alexandre Ouattara, Jean-Luc Fellahi, Matthias Gruenewald, Jean Hazebroucq, Claude Ecoffey, Pierre Joseph, Matthias Heringlake, Annick Steib, Mark Coburn, Julien Amour, Bertrand Rozec, Inge de Liefde, Patrick Meybohm, Benedikt Preckel, Jean-Luc Hanouz, Luigi Tritapepe, Peter Tonner, Hamina Benhaoua, Jan Patrick Roesner, Berthold Bein, Luc Hanouz, Rob Tenbrinck, Ad J J C Bogers, Bert G Mik, Alain Coiffic, Jochen Renner, Markus Steinfath, Helga Francksen, Ole Broch, Assad Haneya, Manuella Schaller, Patrick Guinet, Lauren Daviet, Corinne Brianchon, Sebastien Rosier, Jean-Jacques Lehot, Hauke Paarmann, Julika Schön, Thorsten Hanke, Joachym Ettel, Silke Olsson, Stefan Klotz, Amir Samet, Giedrius Laurinenas, Adrien Thibaud, Mircea Cristinar, Olivier Collanges, François Levy, Rolf Rossaint, Ana Stevanovic, Gereon Schaelte, Christian Stoppe, Nora Ait Hamou, Sarah Hariri, Astrid Quessard, Aude Carillion, Hélène Morin, Jacqueline Silleran, David Robert, Anne-Sophie Crouzet, Kai Zacharowski, Christian Reyher, Sonja Iken, Nina C Weber, Marcus Hollmann, Susanne Eberl, Giovanni Carriero, Daria Collacchi, Alessandra Di Persio, Olivier Fourcade, Stefan Bergt, Angela Alms
BACKGROUND: Ischemic myocardial damage accompanying coronary artery bypass graft surgery remains a clinical challenge. We investigated whether xenon anesthesia could limit myocardial damage in coronary artery bypass graft surgery patients, as has been reported for animal ischemia models. METHODS: In 17 university hospitals in France, Germany, Italy, and The Netherlands, low-risk elective, on-pump coronary artery bypass graft surgery patients were randomized to receive xenon, sevoflurane, or propofol-based total intravenous anesthesia for anesthesia maintenance...
September 5, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28867639/animal-models-of-pulmonary-arterial-hypertension-a-systematic-review-and-meta-analysis-of-data-from-6-126-animals
#18
Katarzyna Sztuka, Magdalena Jasińska-Stroschein
Numerous animal models of pulmonary hypertension are currently available. A systematic review and meta-analysis was performed of a number of experimental studies of disease induction based on several animal models. A meta-analysis was performed of 291 publications discussing the efficacy of 611 interventions to introduce disease pulmonary hypertension in 6,126 animals. A meta-regression analysis was done to assess the effect of prolonged periods of disease induction on the outcomes. A random-effects meta-analysis was used to assess the impact of study characteristics and seek evidence of publication bias...
August 31, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28867139/bite-wounds-caused-by-a-wild-boar-a-case-report
#19
Hiroki Nagasawa, Kazuhiko Omori, Hiroyuki Maeda, Ikuto Takeuchi, Suguru Kato, Takashi Iso, Kei Jitsuiki, Toshihiko Yoshizawa, Kouhei Ishikawa, Hiromichi Ohsaka, Youichi Yanagawa
A 74-year-old man was attacked by a wild boar while on his way home from his farm in the daytime in winter 2017 on the rural Izu peninsula. He did not provoke the boar; however, hunters were hunting animals in the mountains near the farm around the same time. The boar bit his left leg, and the man fell to the ground. The boar continued biting the man's left leg, and the man delivered a few kicks to the boar's face with his right leg. The boar then bit his right foot and ran away. The man was taken to a hospital, and a physical examination revealed 3 bite wounds on his left leg and right foot...
August 31, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28857799/age-at-exposure-to-surgery-and-anesthesia-in-children-and-association-with-mental-disorder-diagnosis
#20
Caleb Ing, Ming Sun, Mark Olfson, Charles J DiMaggio, Lena S Sun, Melanie M Wall, Guohua Li
BACKGROUND: Animals exposed to anesthetics during specific age periods of brain development experience neurotoxicity, with neurodevelopmental changes subsequently observed during adulthood. The corresponding vulnerable age in children, however, is unknown. METHODS: An observational cohort study was performed using a longitudinal dataset constructed by linking individual-level Medicaid claims from Texas and New York from 1999 to 2010. This dataset was evaluated to determine whether the timing of exposure to anesthesia ≤5 years of age for a single common procedure (pyloromyotomy, inguinal hernia, circumcision outside the perinatal period, or tonsillectomy and/or adenoidectomy) is associated with increased subsequent risk of diagnoses for any mental disorder, or specifically developmental delay (DD) such as reading and language disorders, and attention deficit hyperactivity disorder (ADHD)...
August 29, 2017: Anesthesia and Analgesia
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