In vivo rat glandular stomach and colon micronucleus tests: Kinetics of micronucleated cells, apoptosis, and cell proliferation in the target tissues after a single oral administration of stomach- or colon-carcinogens

The present study was designed to assess the comparative bio-equivalence of Lincopharm 800® and Lincoyosr® in healthy broiler chicken after oral administration of both products in a dose of 20 mg lincomycin base/kg b.wt. Twenty four broiler chickens were divided into two groups. The first group was designed to study the pharmacokinetics of Lincopharm 800®, while the 2nd group was designed to study the pharmacokinetics of Lincoyosr®. Each broiler chicken in both groups was orally administered with 20 mg lincomycin base/kg b.wt. Blood samples were obtained from the wing vein and collected immediately before and at 0.08, 0.16, 0.25, 0.5, 1, 2, 4, 8, 12 and 24 hours after a single oral administration. The disposition kinetics of Lincopharm 800® and Lincoyosr® following oral administration of 20 mg lincomycin base /kg b.wt, revealed that the maximum blood concentration of lincomycin [Cmax] were 4.81 and 4.62 μg/ml and attained at [tmax] of 1.36 and 1.35 hours, respectively. In conclusion: Lincoyosr® is bioequivalent to Lincopharm 800® since the ratios of Cmax, AUC0-24 and AUC0-∞ (T/R) was 0.96, 0.92 and 0.91 respectively. These are within the bioequivalence acceptance range. Lincoyosr® and Lincopharm 800® are therefore bioequivalent and interchangeable.

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Bio-equivalence study of two oral doxycycline formulations (doxycycline kela 75%® and mebcodox 75%®) in broiler Chickens

International Journal of Pharmacology and Toxicology ◽

10.14419/ijpt.v8i1.30477 ◽

2020 ◽

Vol 8 (1) ◽

pp. 54

Author(s):

Ashraf El-Komy ◽

Mohamed Aboubakr

Keyword(s):

Oral Administration ◽

Blood Concentration ◽

Broiler Chickens ◽

Wing Vein ◽

Blood Samples ◽

Disposition Kinetics ◽

Oral Doxycycline ◽

Single Oral Administration ◽

Acceptance Range ◽

Kinetics Of

The present study was designed to assess the comparative bio-equivalence of Doxycycline Kela 75%® and Mebcodox 75%® in healthy broiler chickens after oral administration of both products in a dose of 20 mg doxycycline base/kg.b.wt. Twenty four broiler chickens were divided into two groups. The first group was designed to study the pharmacokinetics of Doxycycline Kela 75%®, while the 2nd group was designed to study the pharmacokinetics of Mebcodox 75%®. Each broiler chickens in both groups were orally administered with 20 mg doxycycline base/kg.b.wt. Blood samples were obtained from the wing vein and collected immediately before and at 0.08, 0.16, 0.25, 0.5, 1, 2, 4, 6, 8, 12 and 24 hours after a single oral administration The disposition kinetics of Doxycycline Kela 75%® and Mebcodox 75%® following oral administration of 20 mg doxycycline base/kg.b.wt. revealed that the maximum blood concentration [Cmax] were 3.35 and 3.28 μg/ml and attained at [tmax] of 0.97 and 0.99 hours, respectively.In conclusion: Mebcodox 75%® is bioequivalent to Doxycycline Kela 75%® since the ratios of Cmax, AUC0-24 and AUC0-∞ (T/R) was 0.97, 0.95 and 0.94 respectively. These are within the bioequivalence acceptance range. Mebcodox 75%® and Doxycycline Kela 75%® are therefore bioequivalent and interchangeable.

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