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Gutierrez L, Guzman-Flores A, Monroy-Barreto M, Ocampo L, Sumano H. Oral pharmacokinetics of a pharmaceutical preparation of florfenicol in broiler chickens. Front Vet Sci 2023; 10:1208221. [PMID: 37351554 PMCID: PMC10284592 DOI: 10.3389/fvets.2023.1208221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 05/16/2023] [Indexed: 06/24/2023] Open
Abstract
Introduction The use of florfenicol must follow particular pharmacokinetic/pharmacodynamic (PK/PD) ratios, i.e., it requires achieving serum concentrations at or slightly above the pathogen's minimum inhibitory concentration (MIC) during the dosing interval and that the ratio of area under the concentration vs. time curve (AUC)/MIC should be as high as possible (still undetermined for poultry). As an alternative to the standard soluble florfenicol that is administered to the flock through drinking water, florfenicol premix is often recommended as feed medication in Latin America. However, no particular pharmaceutical design has been proposed. Methods This study compared the PK of two preparations of florfenicol in broiler chickens and pondered the possibility of each covering the referred PK-PD ratios as predictors of clinical efficacy. The preparations comprise a pharmaceutical form as FOLA pellets (F = bioavailability; O = optimum; and LA = long-acting) and the premix formulation. The former are small colored pellets with vehicles and absorption enhancers of florfenicol designed for long action, and the latter is the reference premix of the antibiotic. First, these two pharmaceutical forms of florfenicol were administered as oral boluses (30 mg/kg), aided by a probe. In a second trial of the dosing form, both pharmaceutical preparations of florfenicol were administered in feed and ad libitum (110 ppm; ~30 mg/kg). Results In both cases, FOLA-florfenicol presented much higher relative bioavailability (3.27 times higher) and mean better residence time than florfenicol premix (two times high when forced as bolus dose). Consequently, FOLA-florfenicol possesses better PK/PD ratios than less sensitive pathogens, i.e., E. coli. It is proposed that if a metaphylactic treatment of a bacterial outbreak in poultry is implemented with florfenicol prepared as FOLA, better PK/PD ratios will be obtained than those of standard florfenicol premix. Discussion Clinicians must confirm that feed consumption in the flock has not been affected by the particular disease if FOLA pellets of florfenicol are used.
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Affiliation(s)
- Lilia Gutierrez
- Departamento de Fisiología y Farmacologia, Faculta de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Aline Guzman-Flores
- Departamento de Fisiología y Farmacologia, Faculta de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Minerva Monroy-Barreto
- Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Luis Ocampo
- Departamento de Fisiología y Farmacologia, Faculta de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Hector Sumano
- Departamento de Fisiología y Farmacologia, Faculta de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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Liu Z, Chen J, Zhao S, Pang Y, Shen X, Lei H, Li X. Immunochromatographic assays based on three kinds of nanoparticles for the rapid and highly sensitive detection of tylosin and tilmicosin in eggs. Mikrochim Acta 2021; 189:42. [PMID: 34971440 DOI: 10.1007/s00604-021-05151-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/12/2021] [Indexed: 01/03/2023]
Abstract
Three kinds of immunochromatographic assays (ICAs) are proposed for the highly sensitive and rapid determination of tylosin (TYL) and tilmicosin (TIM) in eggs based on colloidal gold (CG), latex microsphere (LM), and time-resolved fluorescent microsphere (TRFM). Three types of ICAs could tolerate the egg matrix via simple sample pretreatment and demonstrated high sensitivity for TYL and TIM with cut-off values of 6/6/3 μg/kg and 14/14/6 μg/kg, respectively. Furthermore, in a single-blind parallel study 20 egg samples were analyzed by the three developed ICAs and confirmed by LC-MS/MS. The results showed good consistency, and there were no false positive and false negative results in our three ICAs. Consequently, the proposed three ICAs offered rapid, highly sensitive, reliable, and selectable testing platforms for screening veterinary medicine or other small molecule contaminants.
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Affiliation(s)
- Zhiwei Liu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Jiayi Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Sijun Zhao
- China Animal Health and Epidemiology Center, 369 Nanjing Rd, Si Fang Qu, Qingdao, 266032, China
| | - Yimeng Pang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
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Pokrant E, Trincado L, Yévenes K, Terraza G, Maddaleno A, Martín BS, Zavala S, Hidalgo H, Lapierre L, Cornejo J. Determination of five antimicrobial families in droppings of therapeutically treated broiler chicken by high-performance liquid chromatography-tandem mass spectrometry. Poult Sci 2021; 100:101313. [PMID: 34298383 PMCID: PMC8322472 DOI: 10.1016/j.psj.2021.101313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/27/2021] [Accepted: 06/01/2021] [Indexed: 12/05/2022] Open
Abstract
Antimicrobials are currently used in poultry for disease treatment. However, their excretion in bird feces may contaminate the environment. Considering this, the objective of this work was to quantify antimicrobials residues concentrations in therapeutically treated broiler chicken droppings throughout the post-treatment period. For this aim a multiresidue method using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) was validated. Forty-eight male broiler chickens were distributed and treated with commercial formulations of 5 different antimicrobials. Results showed that oxytetracycline and 4-epi-oxytetracycline, presented the highest concentrations during all sampling period, detecting concentrations of 1471.41 µg kg−1 at the last sampling point (day 22 post-treatment). Florfenicol, tylosin, enrofloxacin, and ciprofloxacin were eliminated and detected in treated chicken droppings until d 18 post-treatment. Sulfachloropyridazine decrease gradually during post-treatment period until day 30. Results demonstrate that studied antimicrobials in treated chicken droppings were eliminated for prolonged periods, therefore becoming a significant route of residues dissemination into the environment.
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Affiliation(s)
- Ekaterina Pokrant
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile; Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av Santa Rosa 11315, La Pintana, Santiago CP 8820808, Chile
| | - Lina Trincado
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile; Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av Santa Rosa 11315, La Pintana, Santiago CP 8820808, Chile
| | - Karina Yévenes
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile; Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av Santa Rosa 11315, La Pintana, Santiago CP 8820808, Chile
| | - Gigliola Terraza
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile
| | - Aldo Maddaleno
- Laboratory of Veterinary Pharmacology, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile; Doctorate Program of Forestry, Agriculture, and Veterinary Sciences (DCSAV), University of Chile, Av Santa Rosa 11315, La Pintana, Santiago CP 8820808, Chile
| | - Betty San Martín
- Laboratory of Veterinary Pharmacology, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile
| | - Sebastián Zavala
- Aquaculture Genomics Lab, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile
| | - Héctor Hidalgo
- Laboratory of Avian Pathology, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile
| | - Lisette Lapierre
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile
| | - Javiera Cornejo
- Food Safety Laboratory, Faculty of Veterinary and Animal Sciences, University of Chile, Santiago, Chile.
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Carrillo L, Bernad MJ, Monroy-Barreto M, Coello CL, Sumano H, Gutiérrez L. Higher Bioavailability of Calcium in Chickens With a Novel In-Feed Pharmaceutical Formulation. Front Vet Sci 2020; 7:343. [PMID: 32626729 PMCID: PMC7311573 DOI: 10.3389/fvets.2020.00343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/18/2020] [Indexed: 01/10/2023] Open
Abstract
Egg production and egg shell quality decrease toward the end of the first laying cycle in hens (approximately by week 80). Even so, farmers often choose to work a second cycle with them. Defective egg shell production has been mainly linked to a decrease in gastrointestinal absorption of calcium. Here we studied pharmaceutically-designed modified-release small pellets (FOLAs) containing calcium to improve calcium bioavailability (F). The influence of FOLA alone or with capsicum-oleoresin was studied in a total of 400 Bovans-White hens randomly divided into four groups of 20 laying hens each and with five replicates per group (n = 100) as follows: (1) control group (GC) receiving a diet containing basal levels of 4.1% of calcium-carbonate; (2) group GF treated as GC but with the same dose of calcium-carbonate in FOLA; (3) group GFc5 was treated as GF but with 6 ppm of capsicum-oleoresin (500,000 Scoville Heat Units [SHU]); and (4) group GFc10 treated as GFc5 but with 1,000,000 SHU capsicum-oleoresin. Plasma concentrations of calcium were determined during 5 days at predetermined times sampling more often on days 1 and 5 for blood plasma kinetics of calcium. Relative bioavailability (Fr) values based on the area under the serum calcium concentration vs. time curve (AUC) were obtained and compared to GC. The AUC was statistically different among all groups (P < 0.5), but the GFc10 had the greatest Fr (194%), with serum calcium concentrations ranging from 25.37 to 31.2 μg/dL. Calcium residence time (RT) between GC and GF showed no statistical differences while GFc5 and GFc10 had statistically superior RT values. Simultaneously, the number of shell-less eggs per group and their thickness was evaluated by utilizing the same groups but with 150 hens per group on 6 days. Shell-less eggs decreased to zero in Group GFc10 and produced eggs with the greatest shell thickness from day 2 onwards. The inclusion of calcium-carbonate in the pharmaceutical form FOLA induced higher serum calcium concentrations (GF, GFc5, and GFc10) particularly during the night-phase of the hen's cycle—this coincides with the time at which egg shell formation occurs.
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Affiliation(s)
- Lizbeth Carrillo
- Departamento de Fisiología y Farmacología, Facultad de Medicina Veterinaria, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - María-José Bernad
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Minerva Monroy-Barreto
- Departamento de Química Analítica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Carlos L Coello
- Departamento de Medicina y Zootecnia de Aves, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Héctor Sumano
- Departamento de Fisiología y Farmacología, Facultad de Medicina Veterinaria, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Lilia Gutiérrez
- Departamento de Fisiología y Farmacología, Facultad de Medicina Veterinaria, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
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