Saratov JOURNAL of Medical and Scientific Research

Mordovia State University n.a. N. P. Ogaryov

Myeloprotective efficiency of combination of pyrimidine and 3-hydroxypyridine derivatives in experimental antineoplastic chemotherapy

Year: 2015, volume 11 Issue: №3 Pages: 258-262
Heading: Parmacology Article type: Original article
Authors: Siprov A.V., Masyagin V.A.
Organization: Mordovia State University n.a. N. P. Ogaryov
Summary:

The aim of the study is comparative assessment of the influence of separated and combined use of pyrimidine and 3-hydroxypyridine derivatives — xymedon and mexidol on the bone marrow hemopoiesis and peripheral blood quantitative indicators in rats with Walker-256 carcinoma at the doxorubicin and paclitaxel chemotherapy. Materials and Methods. Experiments have been carried out on 83 Wistar female rats of weight 150-250 grams. Doxorubicin in a dose of 4mg/kg and paclitaxel in a dose of 6mg/kg were administered intraperitoneally on the 11th day of experiment. Xymedon (100mg/kg) and mexidol (50mg/kg) were administered separately and in combination with each other, starting with the 11th day of experiment for 10 Says. We estimated myelograms and peripheral blood changes on the 14th and 22d day of the experiment. Results. Xymedon normalized differentiation of granulocytopoiesis cells more effectively than mexidol and reduced severity of erythrocytopenia on the 14th day of the experiment. Combination of xymedon and mexidol accelerated granulocytes differentiation more effectively than separated use of these medicines. It was accompanied by more effective increase of neutrophils number in peripheral blood. Despite the increase of poly-chromatophil normocytes number in bone marrow to the 22d day, the erythrocytes number in blood was not differed from one at separated use of these medicines. Conclusion. Myeloprotective effect of xymedon exceeds the effect of mexidol one. The combination of xymedon and mexidol accelerates granulocytes differentiation more effectively than separated use of these medicines.

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Cardioprotective efficiency study of combination of pyrimidine and 3-hydroxypyridine derivatives in experimental antitumor chemotherapy

Year: 2014, volume 10 Issue: №2 Pages: 257-261
Heading: Parmacology Article type: Original article
Authors: Siprov A.V., Kostina Yu.A.
Organization: Mordovia State University n.a. N. P. Ogaryov
Summary:

The aim of the study is to analyze the influence of combination of pyrimidine and 3-hydroxypyridine derivatives — xymedon and mexidol, in comparison with kardioxane on the myocardial bioelectric activity and arterial pressure level in rats with Walker-256 carcinoma at the doxorubicin and paclitaxel chemotherapy. Material and Methods. Experiments have been carried out on 100 Wistar female rats of weight of 150-250 grams. Doxorubicin and paclitaxel were administered intraperitoneally in a dosage of 4mg/kg and 6mg/kg respectively on the 11th day of experiment. Xymedon (100mg/kg) and mexidol (50mg/kg) were administered separately and in combination with each other, starting with the 11th day of experiment for 10 days. Kardioxane was injected in the dosage of 80mg/kg 20 min before cytostatics. We estimated a myocardial bioelectric activity and arterial pressure level changes on the 11th and 22d day of the experiment. The results. Xymedon and mexidol combination has limited the development of myocardial electrical instability comparable to kardioxane action. This combination has prevented the appearance of metabolic changes of ischemic genesis in the heart more efficiently than kardioxane. Xymedon and mexidol have normalized QT interval dispersion corrected by heart rate less efficiently than kardioxane. Conclusion. The combination of xymedon and mexidol has reduced cardiotoxicity of antitumor therapy more efficiently than the separated use of these medicines or the use of cardioxane.

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Comparative evaluation of influence of drugs with antioxidant effect on therapeutic efficiency of radiotherapy and oxidative status in mice

Year: 2012, volume 8 Issue: №4 Pages: 906-910
Heading: Clinical Pharmacology Article type: Original article
Authors: Siprov A.M., Vashurkina I.M., Masyagin V.A.
Organization: Mordovia State University n.a. N. P. Ogaryov
Summary:

The purpose of the study is to carry out a comparative analysis of the effect of melatonin (melaxen) and of 3-hy-droxypyridine (mexidol) on antitumor and antimetastatic influence of radiotherapy and oxidative status in mice with Lewis lung carcinoma. Material: Experiments have been carried out on 95 mice of the line C57BI/6 and weight of 20-22 grams. Cyclophosphan has been intraabdominally administered two times in a dosage of 60mg/kg within the interval of 120 hours — 20-30 min before radiotherapy. It has been located on the area of initial tumor in a dosage of 2 Gr at the same time as cyclophosphan injection. Melaxen and mexidol have been intramuscularly injected in the dosage of 45 and 50 mg/ kg for 14 days. Antitumor and antimetastatic effect of the applied therapy and changes in the oxidative status of the animals have been estimated. The results: Melaxen and mexidol do not decrease antitumour and antimetastatic effects of radiotherapy and prevent the activation of free radical processes in animals with tumors. Mexidol has been more effective than melaxen in correction of superoxide dismutase activity in liver. The drugss under the study do not decrease radiotherapy-induced lipid peroxidation in the initial tumor. Conclusion: Melaxen and mexidol do not decrease the therapeutic efficiency of radiotherapy and correct oxidative status in mice with tumor following antineoplastic treatment.

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