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M.F. LANDONI A.L. SORACI P. DELATOUR & P. LEES 《Journal of veterinary pharmacology and therapeutics》1997,20(1):1-16
The chirality of drugs, with particular reference to agents used in veterinary medicine, is reviewed. Basic concepts of chirality and aspects of the methodology for the separation of enantiomers are considered. Chiral compounds are in common use in animals and their pharmacological actions and side-effects (pharmacodynamics) and absorption into and fate within the body (pharmacokinetics) are of fundamental importance; pharmacodynamic and pharmacokinetic properties of enantiomeric pairs commonly differ and this has major implications for their effective and safe therapeutic use. As examples of the particular significance of chirality in veterinary medicine, the following drug classes are reviewed; benzimidazole anthelmintics, cloprostenol, verapamil, ketamine, halogenated hydrocarbon anaesthetics and 2-arylpropionic acid anti-inflammatory drugs. The implications of chirality for drug product development and approval by registration authorities are discussed. 相似文献
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Alberto L. Fernandez DVM Justine A. Lee DVM DACVECC Louisa Rahilly DVM DACVECC Lynn Hovda DVM RPH MS DACVIM Ahna G. Brutlag DVM MS Kristin Engebretsen PharmD DABAT 《Journal of Veterinary Emergency and Critical Care》2011,21(4):309-320
Objective – To review the use of IV lipid emulsion (ILE) for the treatment of toxicities related to fat‐soluble agents; evaluate current human and veterinary literature; and to provide proposed guidelines for the use of this emerging therapy in veterinary medicine and toxicology. Data Sources – Human and veterinary medical literature. Human Data Synthesis – Human data are composed mostly of case reports describing the response to treatment with ILE as variant from mild improvement to complete resolution of clinical signs, which is suspected to be due to the variability of lipid solubility of the drugs. The use of ILE therapy has been advocated as an antidote in cases of local anesthetic and other lipophilic drug toxicoses, particularly in the face of cardiopulmonary arrest and unsuccessful cardiopulmonary cerebral resuscitation. Veterinary Data Synthesis – The use of ILE therapy in veterinary medicine has recently been advocated by animal poison control centers for toxicoses associated with fat‐soluble agents, but there are only few clinical reports documenting successful use of this therapy. Evidence for the use of ILE in both human and veterinary medicine is composed primarily from experimental animal data. Conclusions – The use of ILE appears to be a safe therapy for the poisoned animal patient, but is warranted only with certain toxicoses. Adverse events associated with ILE in veterinary medicine are rare and anecdotal. Standard resuscitation protocols should be exhausted before considering this therapy and the potential side effects should be evaluated before administration of ILE as a potential antidote in cases of lipophilic drug toxicoses. Further research is waranted. 相似文献
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IV lipid emulsion (ILE) therapy is emerging as a potential antidote for lipophilic drug toxicities in both human and veterinary medicine. ILE has already gained acceptance in human medicine as a treatment of local anesthetic systemic toxicity, but its mechanism of action, safety margins, and standardized dosing information remains undetermined at this time. Experimental and anecdotal use of ILE in the human and veterinary literature, theorized mechanisms of action, current dosing recommendations, potential adverse effects, and indications for use in human and veterinary emergency medicine are reviewed herein. 相似文献
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It is clear from this discussion that the predictable effects of aging on the disposition and effect of therapeutic agents in veterinary medicine are in dire need of study. Theoretical concepts are important in that they may help rationalize a therapeutic regimen or help explain a drug toxicity, but they need to be explored in well-controlled studies to determine which of all the possible alterations in drug behavior are important and which are merely academic curiosities. In the meantime, the clinician is advised to treat the geriatric patient in a more cautious manner and to develop a therapeutic regimen that is based on the patient's probable alterations in physiologic function, remembering that although aging is not a disease, its effect on a drug's ability to produce both efficacy and toxicity can be just as profound. 相似文献
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Mathematical modeling and simulation in animal health – Part II: principles,methods, applications,and value of physiologically based pharmacokinetic modeling in veterinary medicine and food safety assessment 
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下载免费PDF全文 Z. Lin R. Gehring J. P. Mochel T. Lavé J. E. Riviere 《Journal of veterinary pharmacology and therapeutics》2016,39(5):421-438
This review provides a tutorial for individuals interested in quantitative veterinary pharmacology and toxicology and offers a basis for establishing guidelines for physiologically based pharmacokinetic (PBPK) model development and application in veterinary medicine. This is important as the application of PBPK modeling in veterinary medicine has evolved over the past two decades. PBPK models can be used to predict drug tissue residues and withdrawal times in food‐producing animals, to estimate chemical concentrations at the site of action and target organ toxicity to aid risk assessment of environmental contaminants and/or drugs in both domestic animals and wildlife, as well as to help design therapeutic regimens for veterinary drugs. This review provides a comprehensive summary of PBPK modeling principles, model development methodology, and the current applications in veterinary medicine, with a focus on predictions of drug tissue residues and withdrawal times in food‐producing animals. The advantages and disadvantages of PBPK modeling compared to other pharmacokinetic modeling approaches (i.e., classical compartmental/noncompartmental modeling, nonlinear mixed‐effects modeling, and interspecies allometric scaling) are further presented. The review finally discusses contemporary challenges and our perspectives on model documentation, evaluation criteria, quality improvement, and offers solutions to increase model acceptance and applications in veterinary pharmacology and toxicology. 相似文献
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近年来,中兽药在现代畜禽养殖、对抗动物疫病、调节改善动物免疫力方面都发挥了重要的作用,但是其在畜禽给药途径和生物利用度方面还存在一定不足。畜禽消化系统的不同导致给药方式必然存在不同,兽用中药配方颗粒使用方便,而且生物利用度高于中药散剂。目前尚无兽用中药配方颗粒的相关研究,本文对兽用中药配方颗粒的研究进展进行归纳总结,以期为兽用中药配方颗粒的开发利用提供依据。 相似文献
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McMichael MA Smith SA 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2011,40(2):140-153
Use of viscoelastic point-of-care (POC) coagulation instrumentation is relatively new to veterinary medicine. In human medicine, this technology has recently undergone resurgence owing to its capacity to detect hypercoagulability. The lack of sensitive tests for detecting hypercoagulable states, along with our current understanding of in vivo coagulation, highlights the deficiencies of standard coagulation tests, such as prothrombin and partial thromboplastin times, which are performed on platelet-poor plasma. Viscoelastic coagulation analyzers can provide an assessment of global coagulation, from the beginning of clot formation to fibrinolysis, utilizing whole blood. In people, use of this technology has been reported to improve management of hemostasis during surgery and decrease usage of blood products and is being used as a rapid screen for hypercoagulability. In veterinary medicine, clinical use of viscoelastic technology has been reported in dogs, cats, foals, and adult horses. This article will provide an overview of the technology, reagents and assays, applications in human and veterinary medicine, and limitations of the 3 viscoelastic POC analyzers in clinical use. 相似文献
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Evidence-based veterinary medicine is a relatively new field of study. Increased knowledge of medicine coupled with the increased ability of computers and other electronic devices present overwhelming information. The critically appraised topic (CAT) is one method to gather and evaluate information related to a clinical question. CATs in informatics are short summaries of evidence, usually found through literature searches, in response to a specifically stated, clinically oriented problem or question. This article describes a study in which each first-year veterinary student developed a CAT as a class project. The results of this project indicate that students were able to successfully develop CATs and that this exercise helped them understand evidence-based veterinary medicine concepts. Though some modification in this project will be made in the future, overall it was a worthwhile effort and will remain as an activity in the course. 相似文献
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K. Zabielska R. Lechowski M. Król K. M. Paw?owski T. Motyl I. Dolka A. ?bikowski 《Veterinary research communications》2012,36(4):227-233
Feline vaccine associated fibrosarcomas are the second most common skin tumor in cats. Methods of treatment are: surgery, chemotherapy and radiotherapy. Nevertheless, the usage of cytostatics in feline vaccine associated sarcoma therapy is limited due to their adverse side effects, high toxicity and low biodistribution after i.v. injection. Therefore, much research on new therapeutic drugs is being conducted. In human medicine, the chick embryo chorioallantoic membrane (CAM) model is used as a cheap and easy to perform assay to assess new drug effectiveness in cancer treatment. Various human cell lines have different tumors growth on CAM. In veterinary medicine such model has not been described yet. In the present article derivation of feline vaccine associated fibrosarcoma cell line and its growth on CAM is described. The cell line and the tumor grown were confirmed by histopathological and immunohistochemical examination. As far as we believe, this is the first attempt to create such model, which may be used for further in vivo studies in veterinary oncology. 相似文献
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A literature review of reports of the stability and storage of common injectable chemotherapy agents used in veterinary patients 下载免费PDF全文
下载免费PDF全文 Many chemotherapy drugs used in human patients are discarded after single use or within 24 h of reconstitution, as per the manufacturer's product label recommendations. This can be wasteful and costly to veterinary clients. This report reviews the published stability and storage data for 19 injectable chemotherapy drugs commonly used in veterinary medicine. Based on these data, storage procedures are presented, assuming aseptic technique and a closed system drug transfer device (CSDTD) are used for drug preparation and handling. Further studies on the risk of microbiological contamination of chemotherapeutics using a CSDTD, and validated high quality drug assays such as stability‐indicating high‐performance liquid chromatography, are required. The authors' intent is not to supersede product label recommendations, but to suggest that longer storage without significant loss of drug efficacy may be possible, thus reducing the costs of chemotherapeutics to some veterinary clients. 相似文献
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P.‐L. Toutain A. Bousquet‐Melou 《Journal of veterinary pharmacology and therapeutics》2013,36(5):420-424
In both human and veterinary medicine, it has been shown that flooding the market with different generics and/or ‘me‐too’ branded drugs has increased overall antibiotic consumption correlating with the emergence and spread of bacterial resistance to antibiotics. Another possible undesirable consequence of the promotion of generics is the promotion of an economic incentive that encourages the use of old drug products with very poor oral bioavailability, marketed with historical dosage regimens and extensively excreted in the environment. What veterinary medicine rather needs is new innovative and ‘ecofriendly’ antibiotics to actually enforce a more prudent use of antibiotics. For a pharmaceutical company, generics are inexpensive to manufacture and on a short‐term basis, the generic market is very appealing. However, on a long‐term basis, this marketing orientation provides a disincentive to the development of new and innovative products that will be required to meet the therapeutic needs of the veterinary community while being consistent with public health concerns. Indeed, for veterinary medicine, the key issue surrounding antibiotics is public health. It is the opinion of the authors that veterinary antibiotics and/or veterinary drug formulations should be innovative in terms of selectivity (no or minimal impact on the commensal gut flora), biodegradable (with minimal environmental disruption), and more expensive, with a strictly regulated market rather than unselective, cheap, and freely available drugs. 相似文献
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Christopher G. Byers DVM DACVECC DACVIM Katelyn Romeo DVM Anthony S. Johnson DVM DACVECC Luis Campoy LV CertVA DECVA MRCVS 《Journal of Veterinary Emergency and Critical Care》2008,18(6):586-593
Background – To review the physics of helium with regard to airway physiology, as well as known human and potential veterinary applications of administration of inhaled helium‐oxygen gas‐carrier mixture (heliox). Data Sources – Human and veterinary studies. Human Data Synthesis – Helium‐oxygen mixtures have been used in human medicine for over 70 years as an adjunct therapy in various upper and lower respiratory disorders. Helium's low density promotes laminar flow through partially obstructed airways, resulting in a decreased work of breathing. Veterinary Data Synthesis – Little to no evidence‐based medicine exists to support or oppose the use of heliox in veterinary species. However, domestic animal species and humans share several common pathophysiologic aspects of various obstructive airway disorders. Thus, veterinary patients may also ultimately and significantly benefit from this novel therapy. Conclusion – Prospective studies are needed in veterinary medicine to determine the utility of heliox in clinical scenarios. 相似文献