Browsing by Author "Aksit, Dilek"

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    Comparative pharmacokinetics and bioavailability of albendazole sulfoxide in sheep and goats, and dose-dependent plasma disposition in goats
    (BMC, 2015-12-12) Aksit, Dilek; Yalinkilinc, Hande Sultan; Sekkin, Selim; Boyacioglu, Murat; Ayaz, Erol; Gokbulut, Cengiz; Cirak, Veli Yilgor; Uludağ Üniversitesi/Veteriner Fakültesi/Klinik Öncesi Bilimler Bölümü.; 0000-0003-0570-2514; FYC-2043-2022; 6602404057
    Background: The aims of this study were to compare the pharmacokinetics of albendazole sulfoxide (ABZ-SO, ricobendazole) in goats and sheep at a dose of 5 mg/kg bodyweight (BW), after intravenous (IV) and subcutaneous (SC) administrations, and to investigate the effects of increased doses (10 and 15 mg/kg BW) on the plasma disposition of ABZ-SO in goats following SC administration. A total of 16 goats (Capra aegagrus hircus, eight males and eight females) and 8 sheep (Ovis aries, four males and four females) 12-16 months old and weighing 20-32 kg, were used. The study was designed according to two-phase crossover study protocol. In Phase-1, eight sheep were assigned as Group I and 16 goats were allocated into two groups (Group II and Group III). ABZ-SO was applied to Group I (sheep) and Group II (goats) animals subcutaneously, and to Group III (goats) animals intravenously, all at a dose rate of 5 mg/kg BW. In Phase-2, the sheep in the Group I received ABZ-SO intravenously in a dose of 5 mg/kg BW; the goats in Group II and Group III received ABZ-SO subcutaneously at a dose of 10 mg/kg and 15 mg/kg BW, respectively. Blood samples were collected from the jugular vein at different times between 1 and 120 h after drug administrations. The plasma concentrations of ABZ-SO and its metabolites were analysed by high performance liquid chromatography. Results: In goats, the area under the curve, terminal half-life and plasma persistence of ABZ-SO were significantly smaller and shorter, respectively, compared with those observed in sheep following both IV and SC administrations at a dose of 5 mg/kg BW. On the other side, dose-dependent plasma dispositions of ABZ-SO were observed following SC administration at increased doses (10 and 15 mg/kg) in goats. Conclusions: Consequently, ABZ-SO might be used at higher doses to provide higher plasma concentration and thus to achieve greater efficacy against the target parasites.
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    Comparative plasma dispositions and bioavailability of ivermectin following oral and pour-on administration in horses
    (Wiley, 2009-08) Gökbulut, Cengiz; Aksit, Dilek; Durmaz, Murat; McKellar, Quintin A.; Çırak, Veli Yilgör; Şenlik, Bayram; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; 0000-0003-2964-2245; 6602404057; 9332720500
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    The effects of different ages and dosages on the plasma disposition and hair degradation of ivermectin following pour-on administration in goats
    (Wiley, 2009-08) Gökbulut, Cengiz; Aksit, Dilek; McKellar, Quintin A.; Çırak, Veli Yilgör; Şenlik, Bayram; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; 6602404057; 9332720500