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排序方式: 共有103条查询结果,搜索用时 15 毫秒
1.
M Popovic J Kolarovic M Mikov S Trivic B Kaurinovic 《European journal of drug metabolism and pharmacokinetics》2007,32(2):101-108
Our research was aimed at establishing if and how selenium (Se) ion, N-acetylcysteine (NAC), sodium salt of monoketocholic acid (MKH) and superoxide-dismutase (SOD), administered in the experimental animal model, could affect the possible cytotoxicity associated with anthracycline-based combined chemotherapy with doxorubicin, vincristine and prednisolone (DVP). The following biochemical parameters were investigated: the extent of lipid peroxidation (LPx), and the activity of peroxidase (Px), catalase (CAT), glutathione-peroxidase (GSHPx), and xanthine-oxidase (XOD). A statistical increase in LPx activity was obtained by SOD, MKH, DVPSe and DVPMKH. All chemotherapeutic agents reduced Px activity in a statistically significant manner. There was no statistical significance for the results regarding the effects of the administered substances on GSHPx activity. The results for DVP, SOD, MKH, DVPSOD, DVPSe and DVPMKH showed reduced XOD activity which was statistically significant, which was lowest in the case of MKH, while NAC and Se reduced the activity of this enzyme but statistically non significant. NAC, Se, DVP, MKH and DVPMKH caused a reduction in CAT activity, while DVPSOD and DVPSe caused an increase of the latter. 相似文献
2.
Treatment of End-Stage Renal Disease in Central and Eastern Europe: Overview of Current Status and Future Needs 总被引:2,自引:0,他引:2
Bolesaw Rutkowski Aleksandru Ciocalteu Ljubica Djukanovic Istvan Kiss Aleksander Kovac Momir Polenakovic Zvonimir Puretic Rafail Rozental Maria Stanaityte Irina Tareyeva Vladimir Teplan Jeff Zavitz Krivoshiev Stefan & Kveder Rado 《Artificial organs》1998,22(3):187-191
The situation of end-stage renal disease (ESRD) patients in central and eastern Europe was very poor for many years during the so called socialistic era. Economical and political liberation resulted in the significant growth of renal replacement facilities in this region. The number of hemodialysis units increased significantly (56%) during the period 1990–1996, and the number of patients treated with this modality has risen by 75%. More dramatic progress was achieved in peritoneal dialysis. The number of units performing this method of renal replacement therapy (RTT) increased by 277% and the number of patients by more than 300%. Not only quantitative but also qualitative changes were observed. More modern hemodialysis machines installed in the vast majority of units allow for the performance of bicarbonate dialysis, controlled ultrafiltration, and sodium profile modeling. Also, a wider choice of biocompatible dialyzers has become available during the last few years. The number of centers performing renal transplantation has increased significantly, but the number of renal transplants has not followed this progress. Despite all the progress, further development of all RRT methods is necessary to achieve acceptance rates comparable to those observed in developed countries. 相似文献
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Aleksandar Raskovic Vida Jakovljevic Momir Mikov Maja Gavrilovic 《European journal of drug metabolism and pharmacokinetics》2004,29(2):83-86
A study was made of the combined effect of two commercial products of Stevia rebaudiana Bertoni and sodium monoketocholate (mkc) on blood glucose concentration in mice. One group of animals was treated four days with mkc, 4 mg/kg, s.c., second with 200 mg/kg, i.p., of Stevita (Stevita Co, INC, Arlington, Texas) (stevia), third with 20 mg/kg, i.p., of Clear Steviosides Liquid (Stevita Co, INC, Herbal supplement, Brazil) (stevioside), fourth with the combination of stevia and mkc, and the fifth with stevisode and mkc. Blood glucose concentration was measured before treatment, after the first and fourth dose, as well as after subjecting animals to glucose-tolerance test (500 mg/kg, p.o.) or provoking glycemia by injecting adrenaline (0.2 mg/kg, s.c.). It was found that one dose of stevioside combined with mkc caused a significant increase of glycemia with respect of mkc alone and control (10.80:7.90:8.01). However, when repeated four days, the same pretreatment resulted in a significant decrease of glycemia compared with single-dose pretreatment (10.80:7.20). The increase in glycemia with the mice that received four doses of stevioside and mkc and then were subjected to glucose-tolerance test was significantly lower compared to that in mice that were pretreated four days only with mkc before receiving glucose (6.33:7.80). Analogous difference was observed between the animals given mkc alone and mkc plus stevioside after injecting adrenaline (13.33:10.54). As for the interaction of mkc and stevia it was found that the combined pretreatment yielded lower values of glycemia compared with that measured after treatment with stevia alone (6.40:7.82). 相似文献
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Biljana Z. Ristic Marina M. Milenkovic Ivana R. Dakic Biljana M. Todorovic-Markovic Momir S. Milosavljevic Milica D. Budimir Verica G. Paunovic Miroslav D. Dramicanin Zoran M. Markovic Vladimir S. Trajkovic 《Biomaterials》2014
Synthesis of new antibacterial agents is becoming increasingly important in light of the emerging antibiotic resistance. In the present study we report that electrochemically produced graphene quantum dots (GQD), a new class of carbon nanoparticles, generate reactive oxygen species when photoexcited (470 nm, 1 W), and kill two strains of pathogenic bacteria, methicillin-resistant Staphylococcus aureus and Escherichia coli. Bacterial killing was demonstrated by the reduction in number of bacterial colonies in a standard plate count method, the increase in propidium iodide uptake confirming the cell membrane damage, as well as by morphological defects visualized by atomic force microscopy. The induction of oxidative stress in bacteria exposed to photoexcited GQD was confirmed by staining with a redox-sensitive fluorochrome dihydrorhodamine 123. Neither GQD nor light exposure alone were able to cause oxidative stress and reduce the viability of bacteria. Importantly, mouse spleen cells were markedly less sensitive in the same experimental conditions, thus indicating a fairly selective antibacterial photodynamic action of GQD. 相似文献
6.
J Popovi? R Miti? A Sabo M Mikov V Jakovljevi? K Dakovi?-Svajcer 《European journal of drug metabolism and pharmacokinetics》2006,31(2):87-96
The pharmacokinetics of a new verapamil retard tablet formulation have been investigated in a randomized cross-over bioequivalence study on 12 healthy subjects. The drug was given orally at a single new or standard retard tablet dose of 240mg and at a single intravenous dose of 5mg. Plasma verapamil concentrations were determined by HPLC. New retard tablets produced peak plasma verapamil concentrations of 81.34+/-5.69microg/l, time to peak plasma concentrations of 4.91+/-0.89h and an AUC (0-24h) of 1291+/-103.4h x microg/l, with a terminal phase half-life of 55.1+/-14.9h. After intravenous administration verapamil exhibited biphasic elimination kinetics with a terminal plasma half-life of 2.36+/-0.42h and systemic clearance of 34.32+/-5.81 l/h. Bioavailability of the new peroral retard formulation ranged from 19.49+/-4.41% to 67.69+/-11.70%. Absorption rates and amounts were evaluated by means of the spline-convolutional method. Input rates for the new verapamil retard formulation ranged from 0.77+/-0.20mg/h to 5.57+/-1.58mg/h. The cumulative amount of verapamil input was 39.17+/-9.71% for the new retard tablets. All pharmacokinetic parameters for the new verapamil retard tablet formulation, were in reasonable agreement with the data obtained on already registered verapamil retard formulations, indicating their bioequivalence. 相似文献
7.
Occupational intoxication with carbon monoxide 总被引:1,自引:0,他引:1
Mikov I Draskovic D Savic M Arsic M Todorovski Z Glavaski M 《Archives of environmental health》2000,55(6):455-456
The most important safety measure for prevention of CO poisoning is the installation of automatic systems that signal high CO concentrations in the work environment. Public health measures that include stringent pollution control, introduction of low-cost CO monitors, and public education aimed at the high-risk population (e.g., new workers, drivers) should decrease the number of deaths from CO poisoning and should save productive years of life. Toxicity of CO is a consequence of tissue hypoxia created by the displacement of oxygen from hemoglobin and the subsequent impairment of oxygen release to the tissues. Early symptoms of CO intoxication are insidious and can resemble other diseases; physical examination may be unremarkable. For these reasons, many cases of CO poisoning are not readily recognized. 相似文献
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Mikov M Kevresan S Kuhajda K Jakovljević V Vasović V 《Polish journal of pharmacology》2004,56(3):367-371
The aim of the study was to test the efficacy of 3alpha,7alpha-dihydroxy-12-oxo-5beta-cholanate as a blood-brain barrier (BBB) permeator by examining its effect on quinine uptake into the central nervous system in rats, analgesic action of morphine, and on the sleeping time induced by pentobarbital. The obtained results indicate that sodium 3alpha,7alpha-dihydroxy-12-oxo-5beta-cholanate can be considered as modifier of BBB permeability, as it exhibited a promoting effect in all three tests. In the test of quinine uptake, methyl ester of 3alpha,7alpha-dihydroxy-12-oxo-5beta-cholanoic acid (included in the study for comparison) did not show a promoting effect, which can suggest its specific action. 相似文献