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https://www.readbyqxmd.com/read/29131471/the-toxicological-effects-of-some-avermectins-on-goat-liver-carbonic-anhydrase-enzyme
#1
Cuneyt Caglayan, İlhami Gulcin
Avermectins are used worldwide as antiparasitic drugs in the field of veterinary medicine and as agricultural pesticides and insecticides. Carbonic anhydrase (CA, E.C. 4.2.1.1) is a zinc-containing metalloenzyme that catalyzes the reversible hydration of carbon dioxide (CO2 ) to yield protons (H(+) ) and bicarbonate (HCO3(-) ). In this study, some avermectins, including abamectin, doramectin, eprinomectin, and moxidectin, were investigated for in vitro inhibitory effects on the CA enzyme purified from goat liver, which was purified (125...
November 13, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29111862/slit-lamp-based-ocular-scoring-systems-in-toxicology-and-drug-development-a-literature-survey
#2
Joshua Seth Eaton, Paul E Miller, Ellison Bentley, Sara M Thomasy, Christopher J Murphy
PURPOSE: To present a survey of the features of published slit lamp-based scoring systems and their applicability in the context of modern ocular toxicology and drug development. METHODS: References describing original or modified slit lamp-based scoring systems for human or veterinary clinical patients or in investigative or toxicologic research were collected following a comprehensive literature review using textbooks and online publication searches. Each system's indications and features were compiled to facilitate comparison...
November 7, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29068247/australian-elapid-snake-envenomation-in-cats-clinical-priorities-and-approach
#3
Trudi J Mcalees, Linda A Abraham
Practical relevance: No fewer than 140 species of terrestrial snakes reside in Australia, 92 of which possess venom glands. With the exception of the brown tree snake, the venom-producing snakes belong to the family Elapidae. The venom of a number of elapid species is more toxic than that of the Indian cobra and eastern diamondback rattle snake, which has earned Australia its reputation for being home to the world's most venomous snakes. Clinical challenges: The diagnosis of elapid snake envenomation is not always easy...
November 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/28968193/mechanism-of-neonicotinoid-toxicity-impact-on-oxidative-stress-and-metabolism
#4
Xu Wang, Arturo Anadón, Wu Qinghua, Fang Qiao, Irma Ares, María-Rosa Martínez-Larrañaga, Zonghui Yuan, María-Aránzazu Martínez
Thousands of tons of neonicotinoids are widely used around the world as broad-spectrum systemic insecticides and veterinary drugs. Researchers originally thought that neonicotinoids exhibited low mammalian toxicity. However, following their widespread use, it became increasingly evident that neonicotinoids could have various toxic effects on vertebrates and invertebrates. The primary focus of this review is to summarize the research progress associated with oxidative stress as a plausible mechanism for neonicotinoid-induced toxicity as well as neonicotinoid metabolism...
October 2, 2017: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/28938132/development-and-validation-of-carbofuran-and-3-hydroxycarbofuran-analysis-by-high-pressure-liquid-chromatography-with-diode-array-detector-hplc-dad-for-forensic-veterinary-medicine
#5
Vagner Gonçalves, Nicolle Queiroz Hazarbassanov, Adriana de Siqueira, Jorge Camilo Florio, Claudia Helena Pastor Ciscato, Paulo Cesar Maiorka, André Rinaldi Fukushima, Helenice de Souza Spinosa
Agricultural pesticides used with the criminal intent to intoxicate domestic and wild animals are a serious concern in Veterinary Medicine. In order to identify the pesticide carbofuran and its metabolite 3- hydroxycarbofuran in animals suspected of exogenous intoxication a high pressure liquid chromatography with diode array detector (HPLC-DAD) method was developed and validated in stomach contents, liver, vitreous humor and blood. The method was evaluated using biological samples from seven different animal species...
October 15, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28929103/authorization-and-toxicity-of-veterinary-drugs-and-plant-protection-products-residues-of-the-active-ingredients-in-food-and-feed-and-toxicity-problems-related-to-adjuvants
#6
REVIEW
Szandra Klátyik, Péter Bohus, Béla Darvas, András Székács
Chemical substances applied in animal husbandry or veterinary medicine and in crop protection represent substantial environmental loads, and their residues occur in food and feed products. Product approval is governed differently in these two sectors in the European Union (EU), and the occurrence of veterinary drug (VD) and pesticide residues indicated by contamination notification cases in the Rapid Alert System for Food and Feed of the EU also show characteristic differences. While the initial high numbers of VD residues reported in 2002 were successfully suppressed to less than 100 cases annually by 2006 and on, the number of notification cases for pesticide residues showed a gradual increase from a low (approximately 50 cases annually) initial level until 2005 to more than 250 cases annually after 2009, with a halt occurring only in 2016...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28830120/detection-of-carfentanil-by-lc-ms-ms-and-reports-of-associated-fatalities-in-the-usa
#7
Kevin G Shanks, George S Behonick
Carfentanil is a mu (μ) opioid receptor agonist and is estimated to be ~10,000 times more potent than morphine in animal (non-human) models. It is not approved for human use and is only used to immobilize large exotic animals in veterinary medicine. In mid-2016, carfentanil emerged as a contaminant in street heroin in the USA and was central to a large number of emergency department visits and deaths. We describe an analytical method for the detection and quantification of carfentanil in whole blood specimens via a protein precipitation extraction with acetonitrile and liquid chromatography with triple quadrupole mass spectrometry...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28816068/survey-of-diplomates-of-the-american-board-of-veterinary-toxicology-regarding-perceptions-of-the-value-of-this-certification
#8
David C Dorman, April A Kedrowicz
An anonymous, online questionnaire was sent to active diplomates of the American Board of Veterinary Toxicology (DABVTs; n = 95) to determine the attitudes of veterinary toxicologists toward their ABVT certification and the adequacy of the training programs in this discipline. We gathered information related to demographics, educational and work history, and other specialty board membership. Ten questions sought the respondent's opinion related to the economic value of the specialty, whether workforce shortages for DABVT exist, and whether DABVTs should complete a residency or graduate program...
September 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28813206/levamisole-in-illicit-trafficking-cocaine-seized-a-one-year-study
#9
Simona Martello, Massimo Pieri, Cristiano Ialongo, Stefano Pignalosa, Gianluca Noce, Francesca Vernich, Carmelo Russo, Federico Mineo, Sergio Bernardini, Luigi Tonino Marsella
Cocaine use is increasing around the world and its purity is frequently altered through dilution, substitution, contamination, and adulteration. Sugars, talc, starch, and carbonates represent the principal diluents of cocaine, while phenacetin, levamisole, caffeine, and lidocaine are its major adulterants in Europe. Levamisole is used because it is an odorless powder, with physical properties similar to cocaine, and it has reasonable cost and availability, being widely used in veterinary medicine. For this study, we analyzed 88 cocaine samples...
August 16, 2017: Journal of Psychoactive Drugs
https://www.readbyqxmd.com/read/28757310/recommendations-for-harmonization-of-data-collection-and-analysis-of-developmental-neurotoxicity-endpoints-in-regulatory-guideline-studies-proceedings-of-workshops-presented-at-society-of-toxicology-and-joint-teratology-society-and-neurobehavioral-teratology
#10
REVIEW
Abby A Li, Larry P Sheets, Kathleen Raffaele, Virginia Moser, Angela Hofstra, Alan Hoberman, Susan L Makris, Robert Garman, Brad Bolon, Wolfgang Kaufmann, Roland Auer, Edmund Lau, Thomas Vidmar, Wayne J Bowers
The potential for developmental neurotoxicity (DNT) of environmental chemicals may be evaluated using specific test guidelines from the US Environmental Protection Agency or the Organisation for Economic Cooperation and Development (OECD). These guidelines generate neurobehavioral, neuropathological, and morphometric data that are evaluated by regulatory agencies globally. Data from these DNT guideline studies, or the more recent OECD extended one-generation reproductive toxicity guideline, play a pivotal role in children's health risk assessment in different world areas...
July 27, 2017: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/28747984/annual-tendency-of-research-papers-used-icr-mice-as-experimental-animals-in-biomedical-research-fields
#11
Ji Eun Kim, Jung Hoon Nam, Joon Young Cho, Kil Soo Kim, Dae Youn Hwang
Institute of Cancer Research (ICR) mice have been widely used in various research fields including toxicology, oncology, pharmacology, and pharmaceutical product safety testing for decades. However, annual tendency of research papers involving ICR mice in various biomedical fields has not been previously analyzed. In this study, we examined the numbers of papers that used ICR mice as experimental animals in the social science, natural science, engineering, medicine-pharmacy, marine agriculture-fishery, and art-kinesiology fields by analyzing big data...
June 2017: Laboratory Animal Research
https://www.readbyqxmd.com/read/28691548/characterizing-chronic-and-acute-health-risks-of-residues-of-veterinary-drugs-in-food-latest-methodological-developments-by-the-joint-fao-who-expert-committee-on-food-additives
#12
Alan Boobis, Carl Cerniglia, Alan Chicoine, Vittorio Fattori, Markus Lipp, Rainer Reuss, Philippe Verger, Angelika Tritscher
The risk assessment of residues of veterinary drugs in food is a field that continues to evolve. The toxicological end-points to be considered are becoming more nuanced and in light of growing concern about the development of antimicrobial resistance, detailed analysis of the antimicrobial activity of the residues of veterinary drugs in food is increasingly incorporated in the assessment. In recent years, the Joint FAO/WHO Expert Committee on Food Additives (JECFA) has refined its approaches to provide a more comprehensive and fit-for-purpose risk assessment...
July 10, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/28641507/the-acvp-stp-coalition-for-veterinary-pathology-fellows-celebrates-32-new-training-positions
#13
Gary Cockerell, Cory Brayton, Anne Barger, Brad Bolon
Since its creation in 2004, the Coalition for Veterinary Pathology Fellows, a partnership between the American College of Veterinary Pathologists and the Society of Toxicologic Pathology, has established 32 new training positions backed by US$7.4 million in financial support from private sponsors.
June 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28583045/recommendations-for-clinical-pathology-data-generation-interpretation-and-reporting-in-target-animal-safety-studies-for-veterinary-drug-development
#14
William Siska, Aradhana Gupta, Lindsay Tomlinson, Niraj Tripathi, Barbara von Beust
Clinical pathology testing is routinely performed in target animal safety studies in order to identify potential toxicity associated with administration of an investigational veterinary pharmaceutical product. Regulatory and other testing guidelines that address such studies provide recommendations for clinical pathology testing but occasionally contain outdated analytes and do not take into account interspecies physiologic differences that affect the practical selection of appropriate clinical pathology tests...
July 2017: International Journal of Toxicology
https://www.readbyqxmd.com/read/28575422/fatalities-involving-carfentanil-and-furanyl-fentanyl-two-case-reports
#15
Dina M Swanson, Laura S Hair, Selly R Strauch Rivers, Brianna C Smyth, Sara C Brogan, Alexis D Ventoso, Samantha L Vaccaro, Julia M Pearson
Carfentanil is a fentanyl analog frequently used in large animal veterinary medicine. Recently, carfentanil has been discovered in postmortem and antemortem cases throughout the United States in the heroin supply either alone or mixed with heroin and/or other fentanyl analogs. The potency of carfentanil is ~10,000 times greater than morphine and 100 times greater than fentanyl. In two recent cases, carfentanil was identified and ruled to be the cause of death, either alone or in combination with other drugs...
July 1, 2017: Journal of Analytical Toxicology
https://www.readbyqxmd.com/read/28535123/topical-otic-drugs-in-a-multi-purpose-manufacturing-facility-a-guide-on-determination-and-application-of-permitted-daily-exposure-pde
#16
Lisa Wiesner, Maarten Prause, Ester Lovsin Barle
Due to newly introduced EU GMP (Good Manufacturing Practice) guideline for Medicinal Products for Human and Veterinary use, product specific permitted daily exposure (PDE) for toxicological evaluation in multi-purpose facilities are required within a documented process for risk assessment. European Medicines Agency (EMA) guidance on setting PDE limits so far focused on systemic administration routes such as intravenous (IV), oral or inhalation. This article provides guidance on setting PDE values for risk management purposes in multi-purpose facilities for active pharmaceutical ingredients (APIs) applied as topical otic drugs to the outer ear canal...
June 7, 2017: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/28487118/pittosporum-viridiflorum-sims-pittosporaceae-a-review-on-a-useful-medicinal-plant-native-to-south-africa-and-tropical-africa
#17
REVIEW
B Madikizela, L J McGaw
ETHNOPHARMACOLOGICAL RELEVANCE: Pittosporum viridiflorum Sims, a Pittosporaceae species, is used extensively in African traditional medicine (ATM) by various tribes. This review is an appraisal of the information concerning the description, distribution, conservation status, traditional uses, phytochemistry, pharmacology and toxicology of this species with the aim of reconciling it with its traditional use. MATERIALS AND METHODS: A wide-ranging literature search was conducted using database platforms such as Scopus, Google Scholar, Web of Science, ScienceDirect, PubMed and books including local reports and thesis submissions...
May 6, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28479392/relationship-between-ivermectin-concentrations-at-the-injection-site-muscle-and-fat-of-steers-treated-with-traditional-and-long-acting-preparations
#18
Sebastian Iezzi, Peter Purslow, Christensen Sara, Carlos Lanusse, Adrian Lifschitz
Ivermectin (IVM) is broad-spectrum compound active against endo and ecto-parasites of clinical relevance in veterinary and human medicine. It is commercially available to use in livestock animals as injectable formulations containing 1% IVM and also as a concentrated (3.15%) long-acting (LA) preparation. The potential risk of the presence of high concentrations of drug residues in muscle tissue at the injection site is therefore a concern. The aim of this study was to determine the relationship between the IVM residual concentrations at the injection site, in comparison to the untreated contralateral neck (control muscle) and in fat from cattle treated with different preparations...
July 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28406359/enantioselective-analysis-of-chloramphenicol-residues-in-honey-samples-by-chiral-lc-ms-ms-and-results-of-a-honey-survey
#19
Gerhard G Rimkus, Dirk Hoffmann
Chloramphenicol (CAP) is a broad-spectrum antibiotic used widely in both human and veterinary medication. Since 1994, CAP has not been authorised for use in food-producing animals in the European Union due to several adverse effects. A minimum required performance level (MRPL) of 0.3 µg kg(-)(1) was established in 2003. The CAP molecule contains two asymmetric centres, thus in total four para-CAP stereoisomers exist. Only the RR-CAP enantiomer is bioactive, having significant antimicrobial activity. For the first time a chiral LC-MS/MS method is reported to identify and quantify the four CAP enantiomers at residue levels in honey samples...
June 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28375070/teaching-tip-improving-students-email-communication-through-an-integrated-writing-assignment-in-a-third-year-toxicology-course
#20
April A Kedrowicz, Sarah Hammond, David C Dorman
Client communication is important for success in veterinary practice, with written communication being an important means for veterinarian-client information sharing. Effective communication is adapted to clients' needs and wants, and presents information in a clear, understandable manner while accounting for varying degrees of client health literacy. This teaching tip describes the use of a mock electronic mail assignment as one way to integrate writing into a required veterinary toxicology course. As part of this project, we provide baseline data relating to students' written communication that will guide further development of writing modules in other curricula...
December 0: Journal of Veterinary Medical Education
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