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Qian M, Zhou D, Wang Q, Gao J, Li D, Li Y, Yang B. A reliable, simple and cost-efficient TLC-HPLC method for simultaneously determining florfenicol and florfenicol amine in porcine urine: application to residue surveillance. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2019; 36:1218-1227. [PMID: 31192771 DOI: 10.1080/19440049.2019.1627004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Violative residues of florfenicol (FF) in porcine edible tissues pose a potential risk for human health. In this study, urine was selected as target matrix for routine residue monitoring of FF in pig, and a thin layer chromatography (TLC)-high-performance liquid chromatography (HPLC) method was developed for simultaneously determining FF and florfenicol amine (FFA) in porcine urine. The urine samples were extracted with ethyl acetate under alkaline environment. The extracts were enriched through evaporation, purified by TLC and analysed by HPLC at 225 nm. A Waters Symmetry C18 column was used for the separation of the two analytes. The mobile phase was acetonitrile-phosphate buffer mixtures (33.3: 66.7, v/v), and was pumped at 0.6 mL/min. The TLC-HPLC method was well validated and successfully applied to residue depletion study. Good analytical specificity was confirmed by the lack of interfering peaks at the retention times of FF and FFA. The standard curves showed good linearity (FF: y = 143064x - 1045.3, r= 0.9999; FFA: y = 275826x + 1888.8, r= 0.9999) over the range of 0.0625-8 μg/mL. The precision ranged from 0.83% to 11.66% and 2.19% to 8.75% for intraday and interday determination, respectively. The corresponding accuracy ranged from -13.38% to 10.78% and -12.15% to 7.14%, respectively. The limits of quantification (LOQs) for FF and FFA were 0.125 μg/mL. The residue depletion study showed that the concentrations of FF and FFA in urine were higher than those in edible tissues at three time points. This method was reliable, simple and cost efficient, and could be used to monitor FF residues in porcine edible tissue without slaughtering animals. TLC showed excellent purification efficiency and is expected to solve matrix interferences in veterinary drug residue analysis.
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Affiliation(s)
- Mingrong Qian
- a State Key Laboratory Breeding Base for Zhejiang Sustainable Plant Pest Control, Institute of Quality and Standard for Agro-Products, Zhejiang Academy of Agricultural Sciences , Hangzhou , Zhejiang , RP China
| | - Danna Zhou
- b Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture), Animal Husbandry and Veterinary Institute, Hubei Academy of Agricultural Science , Wuhan , Hubei , China
| | - Qianyong Wang
- c Teaching and Research Section of Animal Husbandry and Veterinary Medicine, Wuhan Agricultural School , Wuhan , Hubei , P.R. China
| | - Jindong Gao
- d College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubei , P.R. China
| | - Dong Li
- e Department of Public Health, Wuhan Animal Disease Control Center, , Wuhan , Hubei , P.R. China
| | - Yachao Li
- f Hubei Engineering Research Center of Viral Vector, Wuhan University of Bioengineering , Wuhan , Hubei , P.R. China
| | - Bo Yang
- f Hubei Engineering Research Center of Viral Vector, Wuhan University of Bioengineering , Wuhan , Hubei , P.R. China
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Yang F, Lin Z, Riviere JE, Baynes RE. Development and application of a population physiologically based pharmacokinetic model for florfenicol and its metabolite florfenicol amine in cattle. Food Chem Toxicol 2019; 126:285-294. [DOI: 10.1016/j.fct.2019.02.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 12/17/2022]
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Balcomb CC, Angelos JA, Chigerwe M, Byrne BA, Lane VM, Wetzlich SE, Sahin O, Holler L, Zhang S, Tell LA. Comparative pharmacokinetics of two florfenicol formulations following intramuscular and subcutaneous administration to sheep. Am J Vet Res 2018; 79:107-114. [PMID: 29287162 DOI: 10.2460/ajvr.79.1.107] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the pharmacokinetics of 2 commercial florfenicol formulations following IM and SC administration to sheep. ANIMALS 16 healthy adult mixed-breed sheep. PROCEDURES In a crossover study, sheep were randomly assigned to receive florfenicol formulation A or B at a single dose of 20 mg/kg, IM, or 40 mg/kg, SC. After a 2-week washout period, each sheep was administered the opposite formulation at the same dose and administration route as the initial formulation. Blood samples were collected immediately before and at predetermined times for 24 hours after each florfenicol administration. Plasma florfenicol concentrations were determined by high-performance liquid chromatography. Pharmacokinetic parameters were estimated by noncompartmental methods and compared between the 2 formulations at each dose and route of administration. RESULTS Median maximum plasma concentration, elimination half-life, and area under the concentration-time curve from time 0 to the last quantifiable measurement for florfenicol were 3.76 μg/mL, 13.44 hours, and 24.88 μg•h/mL, respectively, for formulation A and 7.72 μg/mL, 5.98 hours, and 41.53 μg•h/mL, respectively, for formulation B following administration of 20 mg of florfenicol/kg, IM, and 2.63 μg/mL, 12.48 hours, and 31.63 μg•h/mL, respectively, for formulation A and 4.70 μg/mL, 16.60 hours, and 48.32 μg•h/mL, respectively, for formulation B following administration of 40 mg of florfenicol/kg, SC. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that both formulations achieved plasma florfenicol concentrations expected to be therapeutic for respiratory tract disease caused by Mannheimia haemolytica or Pasteurella spp at both doses and administration routes evaluated.
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Pérez-Fernández R, Cazanga V, Jeldres JA, Silva PP, Riquelme J, Quiroz F, Palma C, Carretta MD, Burgos RA. Plasma and tissue disposition of florfenicol in Escherichia coli lipopolysaccharide-induced endotoxaemic sheep. Xenobiotica 2016; 47:408-415. [PMID: 27378216 DOI: 10.1080/00498254.2016.1195522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. The purpose of this study was to understand the effects of the acute inflammatory response (AIR) induced by Escherichia coli lipopolysaccharide (LPS) on florfenicol (FFC) and FFC-amine (FFC-a) plasma and tissue concentrations. 2. Ten Suffolk Down sheep, 60.5 ± 4.7 kg, were distributed into two experimental groups: group 1 (LPS) treated with three intravenous doses of 1 μg/kg bw of LPS at 24, 16, and 0.75 h (45 min) before FFC treatment; group 2 (Control) was treated with saline solution (SS) in parallel to group 1. An IM dose of 20 mg FFC/kg was administered at 0.75 h after the last injection of LPS or SS. Blood and tissue samples were taken after FFC administration. 3. The plasma AUC0-4 h values of FFC were higher (p = 0.0313) in sheep treated with LPS (21.8 ± 2.0 μg·min/mL) compared with the control group (12.8 ± 2.3 μg·min/mL). Lipopolysaccharide injections increased FFC concentrations in kidneys, spleen, and brain. Low levels of plasma FFC-a were observed in control sheep (Cmax = 0.14 ± 0.01 μg/mL) with a metabolite ratio (MR) of 4.0 ± 0.87%. While in the LPS group, Cmax increased slightly (0.25 ± 0.01 μg/mL), and MR decreased to 2.8 ± 0.17%. 4. The changes observed in the plasma and tissue concentrations of FFC were attributed to the pathophysiological effects of LPS on renal hemodynamics that modified tissue distribution and reduced elimination of the drug.
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Affiliation(s)
- Rubén Pérez-Fernández
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Victoria Cazanga
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Jessie Ana Jeldres
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Pedro P Silva
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - José Riquelme
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Fernando Quiroz
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Cristina Palma
- a Laboratorio de Farmacología , Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción , Chillán , Chile and
| | - Maria D Carretta
- b Instituto de Farmacología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile , Valdivia , Chile
| | - Rafael A Burgos
- b Instituto de Farmacología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile , Valdivia , Chile
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Pérez R, Palma C, Burgos R, Jeldres JA, Espinoza A, Peñailillo AK. The acute phase response induced by Escherichia coli
lipopolysaccharide modifies the pharmacokinetics and metabolism of florfenicol in rabbits. J Vet Pharmacol Ther 2015; 39:183-90. [DOI: 10.1111/jvp.12244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 05/04/2015] [Indexed: 11/30/2022]
Affiliation(s)
- R. Pérez
- Laboratorio de Farmacología; Departamento de Ciencias Clínicas; Facultad de Ciencias Veterinarias; Universidad de Concepción; Chillán Chile
| | - C. Palma
- Laboratorio de Farmacología; Departamento de Ciencias Clínicas; Facultad de Ciencias Veterinarias; Universidad de Concepción; Chillán Chile
| | - R. Burgos
- Instituto de Farmacología. Facultad de Ciencias Veterinarias; Universidad Austral de Chile; Valdivia Chile
| | - J. A. Jeldres
- Laboratorio de Farmacología; Departamento de Ciencias Clínicas; Facultad de Ciencias Veterinarias; Universidad de Concepción; Chillán Chile
| | - A. Espinoza
- Laboratorio de Farmacología; Departamento de Ciencias Clínicas; Facultad de Ciencias Veterinarias; Universidad de Concepción; Chillán Chile
| | - A. K. Peñailillo
- Laboratorio de Farmacología; Departamento de Ciencias Clínicas; Facultad de Ciencias Veterinarias; Universidad de Concepción; Chillán Chile
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Pérez R, Palma C, Drápela C, Sepulveda M, Espinoza A, Peñailillo AK. Pharmacokinetics of florfenicol after intravenous administration in Escherichia coli lipopolysaccharide-induced endotoxaemic sheep. J Vet Pharmacol Ther 2014; 38:144-9. [PMID: 25229993 DOI: 10.1111/jvp.12160] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 08/02/2014] [Indexed: 11/29/2022]
Abstract
Experiments in different animal species have shown that febrile conditions, induced by Escherichia coli lipopolysaccharide (LPS), may alter the pharmacokinetic properties of drugs. The objective was to study the effects of a LPS-induced acute-phase response (APR) model on plasma pharmacokinetics of florfenicol (FFC) after its intravenous administration in sheep. Six adult clinically healthy Suffolk Down sheep, 8 months old and 35.5 ± 2.2 kg in body weight (bw), were distributed through a crossover factorial 2 × 2 design, with 4 weeks of washout. Pairs of sheep similar in body weight were assigned to experimental groups: Group 1 (LPS) was treated with three intravenous doses of 1 μg/kg bw of E. coli LPS before FFC treatment. Group 2 (control) was treated with an equivalent volume of saline solution (SS) at similar intervals as LPS. At 24 h after the first injection of LPS or SS, an intravenous bolus of 20 mg/kg bw of FFC was administered. Blood samples (5 mL) were collected before drug administration and at different times between 0.05 and 48.0 h after treatment. FFC plasma concentrations were determined by liquid chromatography. A noncompartmental pharmacokinetic model was used for data analysis, and data were compared using a Mann-Whitney U-test. The mean values of AUC0-∞ in the endotoxaemic sheep (105.9 ± 14.3 μg·h/mL) were significantly higher (P < 0.05) than values observed in healthy sheep (78.4 ± 5.2 μg·h/mL). The total mean plasma clearance (CLT ) decreased from 257.7 ± 16.9 mL·h/kg in the control group to 198.2 ± 24.1 mL·h/kg in LPS-treated sheep. A significant increase (P < 0.05) in the terminal half-life was observed in the endotoxaemic sheep (16.9 ± 3.8 h) compared to the values observed in healthy sheep (10.4 ± 3.2 h). In conclusion, the APR induced by the intravenous administration of E. coli LPS in sheep produces higher plasma concentrations of FFC due to a decrease in the total body clearance of the drug.
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Affiliation(s)
- R Pérez
- Laboratorio de Farmacología, Departamento de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad de Concepción, Chillán, Chile
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Filazi A, Sireli U, Yurdakok B, Aydin F, Kucukosmanoglu A. Depletion of florfenicol and florfenicol amine residues in chicken eggs. Br Poult Sci 2014; 55:460-5. [DOI: 10.1080/00071668.2014.935701] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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