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Öğe Koyunlarda diklofenak sodyum ve meloksikamın tekrarlı uygulanmasının koagulasyon parametreleri üzerine etkisi(Selçuk Üniversitesi Veterinerlik Fakültesi, 2018) Yıldız, Ramazan; Çorum, Orhan; Atik, Orkun; Çorum, Duygu Durna; İder, Merve; Ok, Mahmut; Üney, KamilAmaç: Bu çalışmada koyunlara diklofenak sodyum ve meloksikam uygulamasının koagulasyon parametreleri üzerine etkisinin belirlenmesi amaçlandı. Gereç ve Yöntem: Araştırmada Akkaraman ırkı, sağlıklı 12 adet koyun kullanıldı. Koyunlar her grupta 6 adet olacak şekilde rastgele diklofenak sodyum (DS) ve meloksikam (MS) olmak üzere iki gruba ayrıldı. DS grubundaki koyunlara 2.5 mg/kg dozda diklofenak sodyum, MS grubundaki koyunlara ise 0.5 mg/kg dozda meloksikam kas içi yolla günde bir defa 3 gün boyunca uygulandı. Kan örnekleri ilaç uygulamasından önce (0. saat) ve ilk ilaç uygulamasını takiben 72. saatte alındı. Plazma fibrinojen, aktive parsiyel tromboplastin zamanı (APPT), protrombin zamanı (PT), D-dimer ve trombosit (PLT) seviyeleri ölçüldü. Bulgular: Çalışma süresince her iki gruptaki hayvanların klinik muayene bulgularında herhangi bir farklılık gözlenmedi. DS ve MS grubunun 0. saat ile 72. saat örnekleri karşılaştırıldığında fibrinojen, APTT, PT, D-dimer ve PLT sonuçlarında istatiksel (P > 0.05) bir farklılık görülmedi. Öneri: Koyunlara üç gün süre ile diklofenak sodyum ve meloksikam uygulamasının koagulasyon parametreleri üzerinde belirgin etkisinin olmadığı ifade edilebilir.Öğe Pharmacokinetics and bioavailability of danofloxacin in chukar partridge (Alectoris chukar) following intravenous, intramuscular, subcutaneous, and oral administrations(WILEY, 2019) Çorum, Orhan; Çorum, Duygu Durna; Atik, Orkun; Fakı, Hatice Eser; Altan, Feray; Üney, KamilThe aim of the present study was to determine the pharmacokinetics (PKs) and bioavailability of danofloxacin in chukar partridge (Alectoris chukar) following intravenous (IV), intramuscular (IM), subcutaneous (SC), and oral (PO) administrations at a dose of 10 mg/kg. A total of eight clinically healthy chukar partridges weighing 480 +/- 45 g were used for the investigation. The study was performed in a crossover design (2 x 2 x 2 x 2) with a 15-day washout period between two administrations in four periods. The plasma concentrations of danofloxacin were determined using reversed-phase high-performance liquid chromatography. Noncompartmental PK parameters were also estimated. No local or systemic adverse drug effects were observed in any of the chukar partridges. The mean elimination half-life ranged between 8.18 and 12.08 hr and differed statistically among administration routes. The mean peak plasma concentrations of danofloxacin following IM, SC, and PO administrations were 8.05, 9.58, and 3.39 mu g/ml at 0.5, 1, and 4 hr, respectively. Following IM, SC, and PO administrations, the mean bioavailability was 86.33%, 134.40%, and 47.62%, respectively. The mean total clearance and volume of distribution at steady-state following IV administration were 0.13 L hr(-1) kg(-1) and 0.96 L/kg, respectively. These data, including favorable PKs and the absence of adverse drug effects, suggest that danofloxacin is a useful antibiotic in chukar partridges.Öğe Pharmacokinetics and bioavailability of marbofloxacin in lambs following administration of intravenous, intramuscular and subcutaneous(ELSEVIER SCIENCE BV, 2018) Altan, Feray; Corum, Orhan; Corum, Duygu Durna; Atik, Orkun; Uney, KamilIn this study, the pharmacokinetic disposition and bioavailability of marbofloxacin (MB) were determined in lambs after single intravenous (IV), intramuscular (IM), and subcutaneous (SC) administrations at a dose of 3 mg/kg. The plasma concentration of MB was measured using high-performance liquid chromatography-UV, and the pharmacokinetic parameters were analyzed using a non-compartmental analysis. Following IV, IM, and SC administrations, the mean terminal half-life (t(1/2 lambda z)) was 11.48, 12.64, and 24.86 h, respectively, and the mean residence time (MRT) was 7.27, 7.81, and 10.11 h, respectively. The bioavailability (F) was 96.01 and 126.39%, after IM and SC administration, respectively. This study showed that SC administration of MB at a dose of 3 mg/kg exhibited flip-flop pharmacokinetics in lambs. These results suggested that MB could be useful in the treatment of severe systemic infections, such as those with M. haemolytica (MIC = 0.035 mu g/mL), in lambs since high AUC(0.24)/MIC and C-max/MIC ratios were achieved after IV and IM administration at 3 mg/kg. However, MB administration (3 mg/kg) via the IV, IM, and SC routes might not be effective in the treatment of respiratory infections caused by organisms with MIC90 value in lambs.Öğe Pharmacokinetics of levamisole in the red-eared slider turtles (Trachemys scripta elegans)(WILEY, 2019) Corum, Orhan; Durna Corum, Duygu; Atik, Orkun; Altan, Feray; Er, Ayse; Uney, KamilThe pharmacokinetics and bioavailability of levamisole were determined in red-eared slider turtles after single intravenous (IV), intramuscular (IM), and subcutaneous (SC) administration. Nine turtles received levamisole (10 mg/kg) by each route in a three-way crossover design with a washout period of 30 days. Blood samples were collected at time 0 (pretreatment), and at 0.25, 0.5, 1, 1.5, 3, 6, 9, 12, 18, 24, 36, and 48 hr after drug administration. Plasma levamisole concentrations were determined by a high-performance liquid chromatography assay. Data were analyzed by noncompartmental methods. The mean elimination half-life was 5.00, 7.88, and 9.43 hr for IV, IM, and SC routes, respectively. The total clearance and volume of distribution at steady state for the IV route were 0.14 L hr(-1) kg(-1) and 0.81 L/kg, respectively. For the IM and SC routes, the peak plasma concentration was 9.63 and 10.51 mu g/ml, respectively, with 0.5 hr of T-max. The bioavailability was 93.03 and 115.25% for the IM and SC routes, respectively. The IM and SC route of levamisole, which showed the high bioavailability and long t(1/2z), can be recommended as an effective way for treating nematodes in turtles.
