Multi-Class Confirmatory Method for Analyzing Trace Levels of Tetracyline
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Multiresidue Determination of Sarafloxacin, Difloxacin, Norfloxacin, and Pefloxacin in Fish Using an Enzyme-Linked Immunosorbent Assay
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Available online at www.sciencedirect.com Procedia Environmental Sciences 8 (2011) 301 – 306 ICESB 2011: 25-26 November 2011, Maldives Multiresidue Determination of Sarafloxacin, Difloxacin, Norfloxacin, and Pefloxacin in Fish using an Enzyme-Linked Immunosorbent Assay ∗ Jiang Jinqing a, Zhang Haitang a, Wang Ziliang a,b aCollege of Animal Science, Henan Institute of Science and Technology, Xinxiang, 453003, China bHenan Provincial Laboratory for Key Disciplines of Animal Virosis Control and Residues Supervison, Xinxiang 453003, China Abstract An indirect competitive ELISA (icELISA) method for multiresidue determination of Fluoroquinolones (FQs) residues in fish samples has been developed. For this purpose, Sarafloxacin (SAR) was employed to synthesize the immunogen and coating antigen through EDC conjugation method, and cell fusion technology was used to produce anti-SAR monoclonal antiobdy. Based on the square matrix titration, an icELISA method was established. The dynamic range for Sarafloxacin in assay buffer was from 0.004 to 18 ng/mL, with LOD and IC50 value of 0.002 ng/mL and 0.32 ng/mL, respectively. After optimization, the physiological pH (7.4) was selected for the immunoassays, and this assay could tolerate up to 10% acetonitrile. The results of this assay showed a high cross- reactivity to Difloxacin (85.5%), Norfloxacin (61.7%), and Pefloxacin (34.8%). Under the 10-fold dilution in authentic fish samples, the regression curve equations for Sarafloxacin, Difloxacin, Norfloxacin and Pefloxacin were y = 1.0114x - 0.4003, R2= 0.9901; y = 0.9782x + 0.2754, R2= 0.9807; y = 0.9892x +0.0489, R2= 0.9843; and y = 0.9797x +0.8017, R2= 0.9844, respectively. -
Multi-Residual Quantitative Analytical Method for Antibiotics in Sea Food by LC/MS/MS
PO-CON1742E Multi-residual quantitative analytical method for antibiotics in sea food by LC/MS/MS ASMS 2017 TP 198 Anant Lohar, Shailendra Rane, Ashutosh Shelar, Shailesh Damale, Rashi Kochhar, Purushottam Sutar, Deepti Bhandarkar, Ajit Datar, Pratap Rasam and Jitendra Kelkar Shimadzu Analytical (India) Pvt. Ltd., 1 A/B, Rushabh Chambers, Makwana Road, Marol, Andheri (E), Mumbai-400059, Maharashtra, India. Multi-residual quantitative analytical method for antibiotics in sea food by LC/MS/MS Introduction Antibiotics are widely used in agriculture as growth LC/MS/MS method has been developed for quantitation of enhancers, disease treatment and control in animal feeding multi-residual antibiotics (Table 1) from sea food sample operations. Concerns for increased antibiotic resistance of using LCMS-8040, a triple quadrupole mass spectrometer microorganisms have prompted research into the from Shimadzu Corporation, Japan. Simultaneous analysis environmental occurrence of these compounds. of multi-residual antibiotics often exhibit peak shape Assessment of the environmental occurrence of antibiotics distortion owing to their different chemical nature. To depends on development of sensitive and selective overcome this, autosampler pre-treatment feature was analytical methods based on new instrumental used [1]. technologies. Table 1. List of antibiotics Sr.No. Name of group Name of compound Number of compounds Flumequine, Oxolinic Acid, Ciprofloxacin, Danofloxacin, Difloxacin.HCl, 1 Fluoroquinolones 8 Enrofloxacin, Sarafloxacin HCl Trihydrate, -
AMEG Categorisation of Antibiotics
12 December 2019 EMA/CVMP/CHMP/682198/2017 Committee for Medicinal Products for Veterinary use (CVMP) Committee for Medicinal Products for Human Use (CHMP) Categorisation of antibiotics in the European Union Answer to the request from the European Commission for updating the scientific advice on the impact on public health and animal health of the use of antibiotics in animals Agreed by the Antimicrobial Advice ad hoc Expert Group (AMEG) 29 October 2018 Adopted by the CVMP for release for consultation 24 January 2019 Adopted by the CHMP for release for consultation 31 January 2019 Start of public consultation 5 February 2019 End of consultation (deadline for comments) 30 April 2019 Agreed by the Antimicrobial Advice ad hoc Expert Group (AMEG) 19 November 2019 Adopted by the CVMP 5 December 2019 Adopted by the CHMP 12 December 2019 Official address Domenico Scarlattilaan 6 ● 1083 HS Amsterdam ● The Netherlands Address for visits and deliveries Refer to www.ema.europa.eu/how-to-find-us Send us a question Go to www.ema.europa.eu/contact Telephone +31 (0)88 781 6000 An agency of the European Union © European Medicines Agency, 2020. Reproduction is authorised provided the source is acknowledged. Categorisation of antibiotics in the European Union Table of Contents 1. Summary assessment and recommendations .......................................... 3 2. Introduction ............................................................................................ 7 2.1. Background ........................................................................................................ -
Mitigation of Antimicrobial Drug Resistance and Changes in The
Mitigation of Antimicrobial Drug Resistance and Changes in the Microbiome of Feedlot Cattle Supplemented with Lactobacillus salivarius L28 as an Alternative to Sub-Therapeutic Antibiotics by Andrea R. English, M.S. A Dissertation In Animal Science Submitted to the Graduate Faculty of Texas Tech University in Partial Fulfillment of the Requirements for the Degree of DOCTOR OF PHILOSOPHY Approved Dr. Marcos X. Sánchez-Plata Co-Chair of Committee Dr. Mindy M. Brashears Co-Chair of Committee Dr. Kendra K. Nightingale Dr. Alejandro Echeverry Dr. Jessie Vipham Dr. Mark F. Miller Mark Sheridan Dean of the Graduate School December, 2019 Copyright 2019, Andrea English Texas Tech University, Andrea English, December 2019 ACKNOWLEDGMENTS I would like to first thank my advisor Dr. Mindy Brashears you took a chance on me and I am forever grateful. I am so thankful that I was able to learn and grow as a scientist under your guidance. You have provided me with experiences I will always remember. Thank you for everything you have done for me while at Texas Tech. Thank you to my committee, Dr. Sanchez you have been an incredible mentor and I have truly valued absorbing as much knowledge as I possibly could from you. Dr. Nightingale thank you for investing in me and this project. You pushed me to be a better scientist which I very much appreciate. Dr. Echeverry and Dr. Vipham I cannot say thank you enough for the support you have provided me. You each have always made time for me and that is invaluable. Dr. Miller thank you for continuously providing me with opportunities to grow, learn and dabble in meat science while here at Texas Tech. -
AMR in Fisheries and Aquaculture Products
AMR in fisheries and aquaculture products Products, Trade and Marketing Branch Fisheries and Aquaculture Department Food and Agriculture Organization of the United Nations What accelerates the emergence and spread of AMR? Poor infection control, inadequate sanitary conditions and misused of antimicrobials among others Role of modifiable drivers for antimicrobial resistance: a conceptual framework (Alison H Holmes, 2015) EU FISH AND CRUSTACEANS PRODUCT ALERTS Hazard Category 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Microbiological 52 75 11 17 24 68 70 65 52 31 58 38 38 Chemical and 118 177 203 221 108 135 123 149 134 170 221 128 133 residues Histamine 39 22 29 44 39 51 35 32 44 53 40 33 42 Toxins 0 0 0 0 0 0 0 0 0 0 0 2 4 Parasitic infestation 51 21 15 27 38 70 85 96 54 11 18 11 22 Others 33 14 29 35 46 120 123 137 127 73 43 83 88 TOTAL ALERTS 293 309 287 344 255 444 436 479 411 338 380 295 327 Hazard Category 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Microbiological 51 25 6 4 8 8 13 7 9 3 6 10 15 Chemical and 103 128 122 108 111 145 43 40 31 24 57 31 46 residues Others 5 1 10 9 3 23 22 29 20 26 14 17 8 Biotoxins 0 2 1 0 0 0 0 0 0 0 0 0 0 TOTAL ALERTS 159 156 139 121 122 176 78 76 60 53 77 58 69 Source: Rapid Alert System for Food and Feed, European Commission IMPORT REFUSALS DUE TO CHEMICAL HAZARDS IN EU DIOXINS 2% 35 ADDITIVES 4% 30 25 BENZO(a)PYRENE 6% 20 OTHER CHEMICAL HAZARDS 8% 15 10 5 ANTIMICROBIALS 18% 0 HEAVY METALS 62% 2010 2011 2012 2013 2014 2015 2016 JAPAN FISHERY PRODUCTS DETENTION -
DNA/RNA Synthesis
DNA/RNA Synthesis RNA synthesis, which is also called DNA transcription, is a highly selective process. Transcription by RNA polymerase II extends beyond RNA synthesis, towards a more active role in mRNA maturation, surveillance and export to the cytoplasm. Single-strand breaks are repaired by DNA ligase using the complementary strand of the double helix as a template, with DNA ligase creating the final phosphodiester bond to fully repair the DNA.DNA ligases discriminate against substrates containing RNA strands or mismatched base pairs at positions near the ends of the nickedDNA. Bleomycin (BLM) exerts its genotoxicity by generating free radicals, whichattack C-4′ in the deoxyribose backbone of DNA, leading to opening of the ribose ring and strand breakage; it is an S-independentradiomimetic agent that causes double-strand breaks in DNA. First strand cDNA is synthesized using random hexamer primers and M-MuLV Reverse Transcriptase (RNase H). Second strand cDNA synthesis is subsequently performed using DNA Polymerase I and RNase H. The remaining overhangs are converted into blunt ends using exonuclease/polymerase activity. After adenylation of the 3′ ends of DNA fragments, NEBNext Adaptor with hairpin loop structure is ligated to prepare the samples for hybridization. Cell cycle and DNA replication are the top two pathways regulated by BET bromodomain inhibition. Cycloheximide blocks the translation of mRNA to protein. www.MedChemExpress.com 1 DNA/RNA Synthesis Inhibitors, Agonists, Activators, Modulators & Chemicals (+)-TK216 (-)-TK216 Cat. No.: HY-122903B Cat. No.: HY-122903A (+)-TK216 is an enantiomer of TK216 (HY-122903). (-)-TK216 is an enantiomer of TK216 (HY-122903). TK216 is an orally active and potent E26 TK216 is an orally active and potent E26 transformation specific (ETS) inhibitor. -
EMA/CVMP/158366/2019 Committee for Medicinal Products for Veterinary Use
Ref. Ares(2019)6843167 - 05/11/2019 31 October 2019 EMA/CVMP/158366/2019 Committee for Medicinal Products for Veterinary Use Advice on implementing measures under Article 37(4) of Regulation (EU) 2019/6 on veterinary medicinal products – Criteria for the designation of antimicrobials to be reserved for treatment of certain infections in humans Official address Domenico Scarlattilaan 6 ● 1083 HS Amsterdam ● The Netherlands Address for visits and deliveries Refer to www.ema.europa.eu/how-to-find-us Send us a question Go to www.ema.europa.eu/contact Telephone +31 (0)88 781 6000 An agency of the European Union © European Medicines Agency, 2019. Reproduction is authorised provided the source is acknowledged. Introduction On 6 February 2019, the European Commission sent a request to the European Medicines Agency (EMA) for a report on the criteria for the designation of antimicrobials to be reserved for the treatment of certain infections in humans in order to preserve the efficacy of those antimicrobials. The Agency was requested to provide a report by 31 October 2019 containing recommendations to the Commission as to which criteria should be used to determine those antimicrobials to be reserved for treatment of certain infections in humans (this is also referred to as ‘criteria for designating antimicrobials for human use’, ‘restricting antimicrobials to human use’, or ‘reserved for human use only’). The Committee for Medicinal Products for Veterinary Use (CVMP) formed an expert group to prepare the scientific report. The group was composed of seven experts selected from the European network of experts, on the basis of recommendations from the national competent authorities, one expert nominated from European Food Safety Authority (EFSA), one expert nominated by European Centre for Disease Prevention and Control (ECDC), one expert with expertise on human infectious diseases, and two Agency staff members with expertise on development of antimicrobial resistance . -
Third ESVAC Report
Sales of veterinary antimicrobial agents in 25 EU/EEA countries in 2011 Third ESVAC report An agency of the European Union The mission of the European Medicines Agency is to foster scientific excellence in the evaluation and supervision of medicines, for the benefit of public and animal health. Legal role Guiding principles The European Medicines Agency is the European Union • We are strongly committed to public and animal (EU) body responsible for coordinating the existing health. scientific resources put at its disposal by Member States • We make independent recommendations based on for the evaluation, supervision and pharmacovigilance scientific evidence, using state-of-the-art knowledge of medicinal products. and expertise in our field. • We support research and innovation to stimulate the The Agency provides the Member States and the development of better medicines. institutions of the EU the best-possible scientific advice on any question relating to the evaluation of the quality, • We value the contribution of our partners and stake- safety and efficacy of medicinal products for human or holders to our work. veterinary use referred to it in accordance with the • We assure continual improvement of our processes provisions of EU legislation relating to medicinal prod- and procedures, in accordance with recognised quality ucts. standards. • We adhere to high standards of professional and Principal activities personal integrity. Working with the Member States and the European • We communicate in an open, transparent manner Commission as partners in a European medicines with all of our partners, stakeholders and colleagues. network, the European Medicines Agency: • We promote the well-being, motivation and ongoing professional development of every member of the • provides independent, science-based recommenda- Agency. -
Comparison of the Pharmacokinetics of Seven Fluoroquinolones in Mammalian and Bird Species Using Allometric Analysis
Bulgarian Journal of Veterinary Medicine (2009), 12, No 1, 3−24 COMPARISON OF THE PHARMACOKINETICS OF SEVEN FLUOROQUINOLONES IN MAMMALIAN AND BIRD SPECIES USING ALLOMETRIC ANALYSIS A. M. HARITOVA & L. D. LASHEV Department of Pharmacology, Physiology of Animals and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6000 Stara Zagora, Bulgaria Summary Haritova, A. M. & L. D. Lashev, 2009. Comparison of the pharmacokinetics of seven fluoroquinolones in mammalian and bird species using allometric analysis. Bulg. J. Vet. Med., 12, No 1, 3−24. Allometric analysis is used to predict the pharmacokinetic behaviour of drugs in animal species where it has not been studied yet. This method was applied to calculate total body clearance, volume of distribution and elimination half-life of seven fluoroquinolone drugs. The results showed that pro- vided information for quinolones’ pharmacokinetics was very close to real data, with the highest accuracy for marbofloxacin. On the contrast, the prediction of pharmacokinetics of enrofloxacin and its active metabolite ciprofloxacin was the most unreliable. Birds should be separately subjected to allometric scaling in order to receive more accurate results. The comparison of data among species showed that in rabbits, pigs, sheep, donkeys and wild animals as gorals, alpakas and oryxes, allomet- ric scaling of fluoroquinolones could not always provide a reasonable accuracy. Therefore, the speci- ficity of metabolism and excretion of a given drug should be taken into account. Key words: allometric scaling, birds, fluoroquinolones, mammals, pharmacokinetics INTRODUCTION Allometric analysis has been used to pre- physiological characteristics as birds and dict the pharmacokinetic behaviour of mammals. Mammalian species could be drugs and to estimate dosage regimens in further divided into carnivores, herbi- animal species that have not been studied vores, or to ruminants and others (Kirk- yet. -
The Grohe Method and Quinolone Antibiotics
The Grohe method and quinolone antibiotics Antibiotics are medicines that are used to treat bacterial for modern fluoroquinolones. The Grohe process and the infections. They contain active ingredients belonging to var- synthesis of ciprofloxacin sparked Bayer AG’s extensive ious substance classes, with modern fluoroquinolones one research on fluoroquinolones and the global competition of the most important and an indispensable part of both that produced additional potent antibiotics. human and veterinary medicine. It is largely thanks to Klaus Grohe – the “father of Bayer quinolones” – that this entirely In chemical terms, the antibiotics referred to for simplicity synthetic class of antibiotics now plays such a vital role for as quinolones are derived from 1,4-dihydro-4-oxo-3-quin- medical practitioners. From 1965 to 1997, Grohe worked oline carboxylic acid (1) substituted in position 1. as a chemist, carrying out basic research at Bayer AG’s Fluoroquinolones possess a fluorine atom in position 6. In main research laboratory (WHL) in Leverkusen. During this addition, ciprofloxacin (2) has a cyclopropyl group in posi- period, in 1975, he developed the Grohe process – a new tion 1 and also a piperazine group in position 7 (Figure A). multi-stage synthesis method for quinolones. It was this This substituent pattern plays a key role in its excellent achievement that first enabled him to synthesize active an- antibacterial efficacy. tibacterial substances such as ciprofloxacin – the prototype O 5 O 4 3 6 COOH F COOH 7 2 N N N 8 1 H N R (1) (2) Figure A: Basic structure of quinolone (1) (R = various substituents) and ciprofloxacin (2) Quinolones owe their antibacterial efficacy to their inhibition This unique mode of action also makes fluoroquinolones of essential bacterial enzymes – DNA gyrase (topoisomer- highly effective against a large number of pathogenic ase II) and topoisomerase IV. -
Sales of Veterinary Antimicrobial Agents in 29 European Countries in 2014
Sales of veterinary antimicrobial agents in 29 European countries in 2014 Trends across 2011 to 2014 Sixth ESVAC report An agency of the European Union The mission of the European Medicines Agency is to foster scientific excellence in the evaluation and supervision of medicines, for the benefit of public and animal health. Legal role • publishes impartial and comprehensible information about medicines and their use; The European Medicines Agency is the European Union body responsible for coordinating the existing scientific resources • develops best practice for medicines evaluation and put at its disposal by Member States for the evaluation, supervision in Europe, and contributes alongside the supervision and pharmacovigilance of medicinal products. Member States and the European Commission to the harmonisation of regulatory standards at the international The Agency provides the Member States and the institutions level. of the European Union (EU) and the European Economic Area (EEA) countries with the best-possible scientific advice Guiding principles on any questions relating to the evaluation of the quality, safety and efficacy of medicinal products for human or • We are strongly committed to public and animal health. veterinary use referred to it in accordance with the provisions of EU legislation relating to medicinal products. • We make independent recommendations based on scien- tific evidence, using state-of-the-art knowledge and The founding legislation of the Agency is Regulation (EC) expertise in our field. No 726/2004. • We support research and innovation to stimulate the Principal activities development of better medicines. Working with the Member States and the European Commission as partners in a European medicines network, the European • We value the contribution of our partners and stakeholders Medicines Agency: to our work. -
Federal Register / Vol. 60, No. 80 / Wednesday, April 26, 1995 / Notices DIX to the HTSUS—Continued
20558 Federal Register / Vol. 60, No. 80 / Wednesday, April 26, 1995 / Notices DEPARMENT OF THE TREASURY Services, U.S. Customs Service, 1301 TABLE 1.ÐPHARMACEUTICAL APPEN- Constitution Avenue NW, Washington, DIX TO THE HTSUSÐContinued Customs Service D.C. 20229 at (202) 927±1060. CAS No. Pharmaceutical [T.D. 95±33] Dated: April 14, 1995. 52±78±8 ..................... NORETHANDROLONE. A. W. Tennant, 52±86±8 ..................... HALOPERIDOL. Pharmaceutical Tables 1 and 3 of the Director, Office of Laboratories and Scientific 52±88±0 ..................... ATROPINE METHONITRATE. HTSUS 52±90±4 ..................... CYSTEINE. Services. 53±03±2 ..................... PREDNISONE. 53±06±5 ..................... CORTISONE. AGENCY: Customs Service, Department TABLE 1.ÐPHARMACEUTICAL 53±10±1 ..................... HYDROXYDIONE SODIUM SUCCI- of the Treasury. NATE. APPENDIX TO THE HTSUS 53±16±7 ..................... ESTRONE. ACTION: Listing of the products found in 53±18±9 ..................... BIETASERPINE. Table 1 and Table 3 of the CAS No. Pharmaceutical 53±19±0 ..................... MITOTANE. 53±31±6 ..................... MEDIBAZINE. Pharmaceutical Appendix to the N/A ............................. ACTAGARDIN. 53±33±8 ..................... PARAMETHASONE. Harmonized Tariff Schedule of the N/A ............................. ARDACIN. 53±34±9 ..................... FLUPREDNISOLONE. N/A ............................. BICIROMAB. 53±39±4 ..................... OXANDROLONE. United States of America in Chemical N/A ............................. CELUCLORAL. 53±43±0