Lj. Aleksandar Obradović, Srđan Joksimović, Michael M. Poe, Tamara Timić, James M.Cook and Miroslav M. Savić
the dose used for protracted treatment. Pharmacol Rep 2012, 64:1116-25.
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Gordana Joksić, Mileva Mićić, Jelena Filipović, Dunja Drakulić, Miloš Stanojlović, Bojan Čalija, Ana Valenta Šobot, Miroslav Demajo and Robert Nilsson
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14. Kaneko M, Morimura K, Nishikawa T, Wanibuchi H, Takada N, Osugi H, Kinoshita H
Janko Samardžić, Laslo Puškaš, Miljana Obradović and Dijana Lazić-Puškaš
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12. Chambers MS, Atack JR, Broughton HB, Collinson N, Cook S, Dawson GR, Hobbs SC, Marshall G, Maubach KA, Pillai GV, Reeve AJ, MacLeod AM: Identifi cation of a novel, selective
Adrian Głogowski, Zbigniew Marczyński, Michał Krzysztof Kołodziejczyk, Jerzy Jambor, Marta Kinga Stefan and Marian Mikołaj Zgoda
Introduction: Dietary supplements are a good way to supplement the deficiency of certain micronutrients and organic components (therapeutic agents) in human body. They are most often available in concentrated form as tablets, capsules, powder or liquid.
Objective: To investigate morphological parameters and the pharmaceutical availability of coated tablets – dietary supplements – that contain selected pharmacopeial titrated dry plant extracts.
Methods: Testing of the effective time of the tablet surface erosion was performed in model acceptor fluids using pharmacopeial methods in static (Erweka apparatus) and dynamic (unlimited diffusion method) conditions. Furthermore, morphological parameters of tablets (the original shape of an ellipse) as well as their hardness were determined.
Results: The effective erosion time was determined by conductometric method using carboxymethylcellulose sodium salt (NaCMC) contained in the tablet. The content of gum arabic and NaCMC in the tablet testifies that the granulate was produced using the “wet granulation” technique which resulted in high hardness of original, esthetic, elliptical tablets and in prolonged disintegration time (erosion).
Conclusions: The used excipients: gum arabic and NaCMC for the production of the tested tablets containing selected dry plant extracts result in their high hardness. The tested dietary supplements are characterized by esthetic design, original shape, and prolonged disintegration time which affects the pharmaceutical availability.
Ye-Feng Lu, Yan Wang, Ming-Zhu Huang, Xue-Fei Ren, Lei-Qing Gao, Dan Li, Yan-Fen Li and Yan Yang
glycemia in this study was relatively stable, which indicates that the grafts of the living donors were of higher quality than the DCD grafts. Table 2 also shows that the tacrolimus concentration and its standard deviation were relatively high during the first 7 days and then reached an acceptable level. Tacrolimus, an immunosuppressive drug, has a narrow therapeutic window and large pharmacokinetic variability with a poor correlation between the drug-dosing regimen and blood concentration. 16 Therefore, more studies are necessary to decide on an ideal dose and
Bilić Petra, Kuleš Josipa, Barić Rafaj Renata and Mrljak Vladimir
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187. Sakuma M, Setoguchi A, Endo Y: Possible emergence of drug-resistant variants of Babesia gibsoni in clinical cases treated with atovaquone and azithromycin. J Vet Intern Med 2009, 23:493-498.
188. Miller DM, Swan GE, Lobetti RG, Jacobson LS: The pharmacokinetics
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2. Anon. European Medicines Agency (EMEA): Guideline on bioanalytical method validation, 2011.
3. Benchaoui H.A., Nowakowski M., Sherington J., Rowan T.G., Sunderland S.J.: Pharmacokinetics and lung tissue concentrations of tulathromycin in swine. J Vet Pharmacol
Isidora Stojic, Vladimir Zivkovic, Ivan Srejovic, Nevena Jeremic, Vladimir Jakovljevic, Dragan Djuric and Slobodan Novokmet
To date, numerous platinum (II) complexes have been successfully used in the treatment of different types of cancer. Therapeutic platinum complexes are different in terms of their structure, chemical reactivity, solubility, pharmacokinetics and toxicity. The aim of our research was the evaluation of cardiotoxicity of dichloro-(ethylendiamine) platinum (II) in a model of isolated rat heart using the Langedorff technique. Oxidative stress was assessed by determination of superoxide anion radical, hydrogen peroxide, Thiobarbituric Acid Reactive Substances and nitric oxide levels from coronary venous effluent. All reagents were perfused at increasing concentrations from 10-8 to 10-4 M for 30 minutes. In this paper, we report that substances administered at higher doses did not induce dose-dependent effects on oxidative stress markers. The results of this research may be of great interest for future studies in this area. There are many novel platinum compounds that had previously demonstrated antitumour activity, and these types of experiments in our study can assist in the examination of their cardiotoxicity. These results could be helpful for understanding dose-dependent side effects of existing and novel platinum compounds
Alexandra Lazăr, J Szederjesi, Ruxandra Copotoiu, Sanda-Maria Copotoiu and L Azamfirei
1. Cuvillon P, Nouvellon E, Ripart J, Boyer JC, Dehour L, Mahamat A, et al. A comparison of the pharmacodynamics and pharmacokinetics of bupivacaine, ropivacaine (with epinephrine) and their equal volume mixtures with lidocaine used for femoral and sciatic nerve blocks: a double-blind randomized study. Anesth Analg. 2009;108:641-649.
2. Ye F, Feng YX, Lin JJ. A ropivacaine-lidocaine combination for caudal blockade in haemorrhoidectomy. J Int Med Res 2007;35:307-313.
3. Hansen TG. Ropivacaine: A
Introduction: Antibacterial quinolones class comprises a series of synthetic antibacterial agents, following the model of nalidixic acid. Because of their common 6-fl uorosubtituent on the quinolone ring, fluroquinolones are the most potent analogues with extended spectrum of activity and great pharmacokinetic properties. The applicability of capillary zone electrophoresis for the separation of fl uoroquinolones in acidic background electrolyte has been studied, our aim being the development of a capillary zone electrophoresis method for the simultaneous separation of six fl uoroquinolones and also to optimize the analytical conditions. The six studied fl uoroquinolones were ciprofloxacin, enoxacin, enrofloxacin, moxifloxacin, ofloxacin and sarafloxacin.
Material and methods: Preliminary, we studied the electrophoretic behavior of six fluoroquinolones in an acidic pH, which highlighted the possibility of developing a separation method in this area of pH. Electrophoretic parameters infl uencing separation performance were studied and optimized.
Results: A fast and reliable method has been developed, using a background electrolyte containing 100 mM phosphoric acid and the following conditions: applied voltage: + 25 kV, temperature: 20°C, injection pressure 30 mbar - 5 sec, UV detection at 280 nm, capillary: 60 cm (52 cm effective length) x 50 μm, analyte concentration: 167 μg/ml. The separation of the studied fl uoroquinolones was achieved in less than 8 minutes.
Conclusions: Capillary zone electrophoresis using an acidic background electrolyte proved to be an efficient tool in the separation of fluoroquinolones from different generations. Also the proposed methods are particular environment-friendly replacement and improvement of a common high performance liquid chromatography determination with rapid analysis time without using any organic solvents.