Benha University

ابو بكر محمد فرج المحمودى

رئيس القسم

كلية الطب البيطري العقاقير

Pharmacokinetics of clarithromycin after single intravenous and intracrop bolus administrations to broiler chickens.

International Journal of Pharmacology and Toxicology • 2016
العودة
معلومات البحث
المؤلفون Hanady Awadallah, Shaban Awidat, Abubakr El-Mahmoudy
الكلمات المفتاحية Broiler; Chicken; Clarithromycin; Intracrop; Intravenous; Pharmacokinetics
المجلة العلمية International Journal of Pharmacology and Toxicology
الناشر Science Publishing Corporation
المجلد 4
العدد 1
الصفحات 12-18
publication.type International
رابط البحث Open Link
المواد المرفقة Not Available
الملخص
The pharmacokinetics of clarithromycin at a dose of 7.5 mg/kg body weight was evaluated after single intravenous (i.v.) and intracrop (i.c.) bolus administrations in broilers. An HPLC assay using pure clarithromycin base as a standard was used to measure its concentrations in plasma. Following an i.v. bolus injection, the plasma concentration-time curves of clarithromycin were best represented by two-compartment open models. The drug was rapidly distributed and moderately eliminated with half-lives of distribution (t1/2α) and elimination (t1/2β) of 0.38 and 4.58 h, respectively. The volume of distribution was large with (Vdss) value of 6.89 L. The total body clearance (ClB) was 1.2 L/h. After i.c. bolus administration of the same dose, clarithromycin was moderately absorbed in broilers with an intermediate absorption half-life (T½ab) of 0.72 h with peak plasma concentration (Cmax) of 1.69 μg/ml attained at 1.7 h (Tmax) and systemic bioavailability of 66.54%. The elimination half-life following i.c. administration was 2.11 h. The extent of plasma protein binding percent was 52%. The study recommends the use of clarithromycin in broilers because of its good pharmacokinetic profile indicated by good absorption, bioavailability and plasma concentrations ≥ MICs of many sensitive microorganisms.
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