The pharmacokinetics of ceftazidime in lactating and non-lactating cows
- Autores
- Rule, R.; Quiroga, G. H.; Rubio, M.; Buschiazzo, Héctor Omar; Mordujovich de Buschiazzo, Perla
- Año de publicación
- 1996
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The pharmacokinetics of ceftazidime (CAZ) were studied in lactating (LTG) and non-lactating (NLTG) cows. Two groups (LTG and NLTG) of 5 healthy dairy cows were given ceftazidime (10 mg/ kg body weight) intravenously (i.v.) and intramuscularly (i.m.). Serum and milk (LTG) and serum samples (NLTG) were collected over a 24-h period post-administration. CAZ concentrations in serum and milk were determined by high-performance liquid chromatography, and an interactive and weighted-non-linear least-squares regression analysis was used to perform the pharmacokinetic analysis. The pharmacokinetic profiles in LTG and NLTG cows which had received CAZ i.v. fitted a three-compartment model and a two-compartment model, respectively. The CAZ concentration-time curves in serum and the area under the curve were greater and more sustained (p<0.05) in the LTG cows by both routes, while the serum clearance (Cls=72.5±18.1 ml/h per kg) was lower (p<0.05) than that in the NLTG cows (Cls=185.9±44.2 ml/h per kg). CAZ given i.v. exhibited a relatively long half-life of elimination (t; 1/2 β (LTG)=1.1±0.2 h; t; 1/2 β (NLTG)=1.4±0.3 h). Compared with other cephalosporins, CAZ had good penetration into the mammary gland (47.7±38.2% for CAZ i.v.; 51.1±39.0% for CAZ i.m.). Finally, the bioavailability of CAZ (F(LTG)=98.9±36.8%; F(NLTG)=77.1±25.3%) was suitable for its use by the i.m. route in lactating and non-lactating cows.
Facultad de Ciencias Médicas
Comisión de Investigaciones Científicas de la provincia de Buenos Aires - Materia
-
Bioquímica
ceftazidime
cephalosporin
cattle
lactation
kinetics
milk - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/136155
Ver los metadatos del registro completo
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The pharmacokinetics of ceftazidime in lactating and non-lactating cowsRule, R.Quiroga, G. H.Rubio, M.Buschiazzo, Héctor OmarMordujovich de Buschiazzo, PerlaBioquímicaceftazidimecephalosporincattlelactationkineticsmilkThe pharmacokinetics of ceftazidime (CAZ) were studied in lactating (LTG) and non-lactating (NLTG) cows. Two groups (LTG and NLTG) of 5 healthy dairy cows were given ceftazidime (10 mg/ kg body weight) intravenously (i.v.) and intramuscularly (i.m.). Serum and milk (LTG) and serum samples (NLTG) were collected over a 24-h period post-administration. CAZ concentrations in serum and milk were determined by high-performance liquid chromatography, and an interactive and weighted-non-linear least-squares regression analysis was used to perform the pharmacokinetic analysis. The pharmacokinetic profiles in LTG and NLTG cows which had received CAZ i.v. fitted a three-compartment model and a two-compartment model, respectively. The CAZ concentration-time curves in serum and the area under the curve were greater and more sustained (p<0.05) in the LTG cows by both routes, while the serum clearance (Cls=72.5±18.1 ml/h per kg) was lower (p<0.05) than that in the NLTG cows (Cls=185.9±44.2 ml/h per kg). CAZ given i.v. exhibited a relatively long half-life of elimination (t; 1/2 β (LTG)=1.1±0.2 h; t; 1/2 β (NLTG)=1.4±0.3 h). Compared with other cephalosporins, CAZ had good penetration into the mammary gland (47.7±38.2% for CAZ i.v.; 51.1±39.0% for CAZ i.m.). Finally, the bioavailability of CAZ (F(LTG)=98.9±36.8%; F(NLTG)=77.1±25.3%) was suitable for its use by the i.m. route in lactating and non-lactating cows.Facultad de Ciencias MédicasComisión de Investigaciones Científicas de la provincia de Buenos Aires1996info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf543-550http://sedici.unlp.edu.ar/handle/10915/136155enginfo:eu-repo/semantics/altIdentifier/issn/0165-7380info:eu-repo/semantics/altIdentifier/issn/1573-7446info:eu-repo/semantics/altIdentifier/doi/10.1007/bf00396297info:eu-repo/semantics/altIdentifier/pmid/8950835info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:57Zoai:sedici.unlp.edu.ar:10915/136155Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:58.259SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
title |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
spellingShingle |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows Rule, R. Bioquímica ceftazidime cephalosporin cattle lactation kinetics milk |
title_short |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
title_full |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
title_fullStr |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
title_full_unstemmed |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
title_sort |
The pharmacokinetics of ceftazidime in lactating and non-lactating cows |
dc.creator.none.fl_str_mv |
Rule, R. Quiroga, G. H. Rubio, M. Buschiazzo, Héctor Omar Mordujovich de Buschiazzo, Perla |
author |
Rule, R. |
author_facet |
Rule, R. Quiroga, G. H. Rubio, M. Buschiazzo, Héctor Omar Mordujovich de Buschiazzo, Perla |
author_role |
author |
author2 |
Quiroga, G. H. Rubio, M. Buschiazzo, Héctor Omar Mordujovich de Buschiazzo, Perla |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Bioquímica ceftazidime cephalosporin cattle lactation kinetics milk |
topic |
Bioquímica ceftazidime cephalosporin cattle lactation kinetics milk |
dc.description.none.fl_txt_mv |
The pharmacokinetics of ceftazidime (CAZ) were studied in lactating (LTG) and non-lactating (NLTG) cows. Two groups (LTG and NLTG) of 5 healthy dairy cows were given ceftazidime (10 mg/ kg body weight) intravenously (i.v.) and intramuscularly (i.m.). Serum and milk (LTG) and serum samples (NLTG) were collected over a 24-h period post-administration. CAZ concentrations in serum and milk were determined by high-performance liquid chromatography, and an interactive and weighted-non-linear least-squares regression analysis was used to perform the pharmacokinetic analysis. The pharmacokinetic profiles in LTG and NLTG cows which had received CAZ i.v. fitted a three-compartment model and a two-compartment model, respectively. The CAZ concentration-time curves in serum and the area under the curve were greater and more sustained (p<0.05) in the LTG cows by both routes, while the serum clearance (Cls=72.5±18.1 ml/h per kg) was lower (p<0.05) than that in the NLTG cows (Cls=185.9±44.2 ml/h per kg). CAZ given i.v. exhibited a relatively long half-life of elimination (t; 1/2 β (LTG)=1.1±0.2 h; t; 1/2 β (NLTG)=1.4±0.3 h). Compared with other cephalosporins, CAZ had good penetration into the mammary gland (47.7±38.2% for CAZ i.v.; 51.1±39.0% for CAZ i.m.). Finally, the bioavailability of CAZ (F(LTG)=98.9±36.8%; F(NLTG)=77.1±25.3%) was suitable for its use by the i.m. route in lactating and non-lactating cows. Facultad de Ciencias Médicas Comisión de Investigaciones Científicas de la provincia de Buenos Aires |
description |
The pharmacokinetics of ceftazidime (CAZ) were studied in lactating (LTG) and non-lactating (NLTG) cows. Two groups (LTG and NLTG) of 5 healthy dairy cows were given ceftazidime (10 mg/ kg body weight) intravenously (i.v.) and intramuscularly (i.m.). Serum and milk (LTG) and serum samples (NLTG) were collected over a 24-h period post-administration. CAZ concentrations in serum and milk were determined by high-performance liquid chromatography, and an interactive and weighted-non-linear least-squares regression analysis was used to perform the pharmacokinetic analysis. The pharmacokinetic profiles in LTG and NLTG cows which had received CAZ i.v. fitted a three-compartment model and a two-compartment model, respectively. The CAZ concentration-time curves in serum and the area under the curve were greater and more sustained (p<0.05) in the LTG cows by both routes, while the serum clearance (Cls=72.5±18.1 ml/h per kg) was lower (p<0.05) than that in the NLTG cows (Cls=185.9±44.2 ml/h per kg). CAZ given i.v. exhibited a relatively long half-life of elimination (t; 1/2 β (LTG)=1.1±0.2 h; t; 1/2 β (NLTG)=1.4±0.3 h). Compared with other cephalosporins, CAZ had good penetration into the mammary gland (47.7±38.2% for CAZ i.v.; 51.1±39.0% for CAZ i.m.). Finally, the bioavailability of CAZ (F(LTG)=98.9±36.8%; F(NLTG)=77.1±25.3%) was suitable for its use by the i.m. route in lactating and non-lactating cows. |
publishDate |
1996 |
dc.date.none.fl_str_mv |
1996 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/136155 |
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http://sedici.unlp.edu.ar/handle/10915/136155 |
dc.language.none.fl_str_mv |
eng |
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eng |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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