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dc.date.accessioned | 2019-11-25T12:33:13Z | |
dc.date.available | 2019-11-25T12:33:13Z | |
dc.date.issued | 2016 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/85998 | |
dc.description.abstract | The aim of this study was to evaluate the bioequivalence of two commercial long-acting formulations based on oxytetracycline (OTC) hydrochloride between the reference formulation (Terramycin LA, Pfizer) and a test formulation (Cyamicin LA, Fort Dodge Saude Animal). Both formulations were administered in a single intramuscular route at a dose of 20 mg OTC/kg of body weight in clinically healthy bovines. The study was carried out according to a one-period parallel design. Plasma samples were analyzed by high-pressure liquid chromatography. The limit of quantitation was 0.050 μg/mL with an accuracy of 101.67% with a coefficient of variation of 13.15%. Analysis of variance and 90% confidence interval tests were used to compare the bioavailability parameters (maximum plasma concentration, Cmax, and the area under the concentration-versus-time curve extrapolated to infinity, AUC0-∞) of both products. In the case of the time to maximum concentration (Tmax), non-parametric tests based on Wilcoxon's signed rank test were preferred. The comparison of the mean AUC0-∞ values did not reveal any significant differences (311.40 ± 93.05 μg h/mL and 287.71 ± 45.31 μg h/mL, respectively). The results were similar for the Tmax (3.58 ± 0.90 h versus 3.42 ± 0.51 h). However, when comparing the mean Cmax some significant differences were found (8.73 ± 3.66 μg/mL and 10.43 ± 3.84 μg/mL, respectively). The 90% confidence intervals for the ratio of AUC0-∞ and Tmax values for the reference and test product are within the interval 80-125%, but the 90% confidence intervals for the ratio of Cmax falls outside the proposed interval. It was concluded that Cmax of test product are not within the 20% of those of the reference, thus suggesting that test OTC is not bioequivalent to the reference formulation. | en |
dc.language | en | es |
dc.subject | AUC | es |
dc.subject | Bioequivalence | es |
dc.subject | Bovines | es |
dc.subject | Cmax | es |
dc.subject | Oxytetracycline | es |
dc.subject | Pharmacokinetics | es |
dc.subject | Tmax | es |
dc.title | Bioequivalence study of two long-acting formulations of oxytetracycline following intramuscular administration in bovines | en |
dc.type | Articulo | es |
sedici.identifier.other | doi:10.3389/fvets.2016.00050 | es |
sedici.identifier.other | eid:2-s2.0-85031001359 | es |
sedici.identifier.issn | 2297-1769 | es |
sedici.creator.person | Mestorino, Olga Nora | es |
sedici.creator.person | Marchetti, María Laura | es |
sedici.creator.person | Lucas, Mariana Florencia | es |
sedici.creator.person | Modamio, Pilar | es |
sedici.creator.person | Zeinsteger, Pedro Adolfo | es |
sedici.creator.person | López Lastra, Claudia Cristina | es |
sedici.creator.person | Segarra, Ignacio | es |
sedici.creator.person | Mariño, Eduardo L. | es |
sedici.subject.materias | Ciencias Veterinarias | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Veterinarias | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Frontiers in Veterinary Science | es |
sedici.relation.journalVolumeAndIssue | vol. 3 | es |
sedici.rights.sherpa | * Color: green * Pre-print del autor: can * Post-print del autor: can * Versión de editor/PDF:can * Condiciones: >>On open access repositories >>Authors retain copyright >>Creative Commons Attribution License >>Published source must be acknowledged with citation >>First publication by Frontiers Media must be acknowledged >>Publisher's version/PDF may be used >>Articles are placed in PubMed Central immediately on behalf of authors. >>All titles are open access journals >>Publisher last reviewed on 24/07/2019 * Link a Sherpa: http://sherpa.ac.uk/romeo/issn/2297-1769/es/ |