Saratov JOURNAL of Medical and Scientific Research

Navolokin N.A.

Saratov State Medical University n.a. V.I. Razumovsky, Department of Pathological Anatomy, Assistant

Изменения лейкоцитарной формулы, красного костного мозга и опухоли лабораторных крыс с перевитой саркомой-45 при введении экстрактов аврана лекарственного, бессмертника песчаного, кукурузы антациановой

Year: 2015, volume 11 Issue: №3 Pages: 328-332
Heading: Proceedings of all-Russia week of science with international participants Article type: Original article
Authors: Наволокин Н.А., Мудрак Д.А., Тычина С.А., Корчаков Н.В.
Organization: Saratov State Medical University
Summary:

Цель; изучить влияние флавоноидсодержащих экстрактов аврана лекарственного, бессмертника песчаного и кукурузы обыкновенной на костный мозг и периферическую кровь при внутримышечном и пероральном введениях в эксперименте на лабораторных крысах с перевитой саркомой-45. Материал и методы. В эксперименте использовано 48 самцов белых беспородных крыс линии Wistar, которым через 72 часа после перевивки опухоли перорально и внутримышечно в течение двух недель ежедневно вводили экстракты (аврана, бессмертника и кукурузы). При этом ежедневно оценивали динамику роста опухоли. После окончания эксперимента у животных забирали кровь, костный мозг (изготавливали мазки) и опухоль для гистологического исследования. В дальнейшем подсчитывали клетки и рассчитывали лейкоцитарную формулу и миелограмму, проводили описание гистологических препаратов опухоли. Результаты. Все три изученных экстракта замедляют темпы роста перевиваемой саркомы и вызывают в ней выраженные морфологические изменения, а также не оказывают токсического эффекта на периферическую кровь. Экстракты аврана лекарственного и кукурузы антациаоновой благоприятно влияют и нормализуют процентное соотношение клеток красного костного мозга у животных с перевитой саркомой, а экстракт бессмертника не оказывает влияния на миелограмму. Заключение. Флавоноид-содержащие экстракты положительное влияют на периферическую кровь и костный мозг и обладают противоопухолевой активностью.

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Morphological changes in liver of laboratory animals at prolonged intake of gold nanoparticles

Year: 2014, volume 10 Issue: №2 Pages: 250-256
Heading: Macro- and Micromorphology Article type: Original article
Authors: Pakhomy S.S., Bucharskaya А.В., Navolokin N.A., Maslyakova G.N., Zlobina O.V., Khlebtsov N.G., Khlebtsov B.N., Bogatyrev V.A.
Organization: Saratov State Medical University
Summary:

Aim: to evaluate the severity of morphological changes in the liver of laboratory animals with prolonged intake of pegilated gold nanoparticles of different sizes from 2 to 50 nm. Material and methods. The experiment was performed on 240 albino rats divided into 4 groups. The animals of experimental groups were orally administered the gold nanoparticles in a specific pattern. Results. Morphological changes in liver depend on the particle size and the duration of administration. Developing pathological changes in the liver are reversible, as evidenced by the gradual recovery of the liver structure 14 days after administration. Conclusion. The most significant changes in the liver were found in the experimental groups with a 30-day administration of 2 and 50 nm gold nanoparticles that show the size-dependent nature of their impact.

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Internal organs morphology and tumors in laboratory rats with transplanted liver cancer PC-1 by oral intoduction containing extract of Gratiola (Gratiola Officinalis L.) and Anthocyan Maize (Zea Mays L.)

Year: 2013, volume 9 Issue: №2 Pages: 213-220
Heading: Macro- and Micromorphology Article type: Original article
Authors: Navolokin N.A., Polukonova N.V., Maslyakova G.N., Bucharskaya А.В., Durnova N.A.
Organization: Saratov State Medical University
Summary:

The purpose of the work is to study antitumor activity of flavonoid-containing extracts of anthocyan maize and gratiola in experiments in vivo and to estimate their effects on the internal organs, tumors and blood of rats with transplanted liver cancer PC-1. Materials and methods: Effect of extracts of anthocyan maize and gratiola has been studied in experiments in vivo in 30 laboratory rats with transplanted liver cancer PC-1 using morphological and biochemical methods. Results: It has been found that extract of gratiola received by a certain way has selective cytotoxic effect on tumor cells. Anthocyan maize extract reduces endogenous intoxication. Conclusion: These results open the prospect of further study of the extract of gratiola in various experimental models of cancer and anthocyan maize extract use may be developed as a means of endogenous intoxication reducing for application in the treatment of cancer. Investigation of anthocyan maize extract may assist in the development of drugs that reduce the endogenous intoxication at the treatment of cancer.

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Morphological changes in the organs of laboratory animals during the prolonged oral administration of gold nanoparticles

Year: 2013, volume 9 Issue: №2 Pages: 208-213
Heading: Macro- and Micromorphology Article type: Original article
Authors: Maslyakova G.N., Pakhomiy S. S., Bucharskaya А.В., Zlobina O.V., Navolokin N.A., Ponukalin A.N., Khlebtsov N.B., Khlebtsov B.N., Bogatyrev V.A.
Organization: Saratov State Medical University, Институт биохимии и физиологии растений и микроорганизмов РАН
Summary:

The purpose of the article is to assess the severity of the morphological changes in the internal organs of laboratory animals with prolonged oral administration of gold nanoparticles of different sizes. Material and methods: The experiment was carried out on 40 albino rats which were divided into 4 groups. Animals of the experimental group received oral gold nanoparticles by the appropriate scheme. Results: At comparing the morphological changes in the internal organs of laboratory animals it was established that the introduction of gold nanoparticles of different sizes leads to the same type of disturbances of morphological structure, the gold nanoparticles of 1-3 and 50 nm cause the most expressive changes. Conclusion: The most significant morphological modifications in the internal organs were caused by gold nanoparticles of 1-3 and 50 nm. It points out to the size-dependence of the effect of gold nanoparticles.

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Morphological changes of internal organs and brain at prolonged oral administration of iron nanoparticles

Year: 2011, volume 7 Issue: №4 Pages: 760-762
Heading: Macro- and Micromorphology Article type: Short message
Authors: Navolokin N.A., Kun S.M.
Organization: Saratov State Medical University
Summary:

Objective: Morphological changes of internal organs and brain of laboratory animals have been studied at prolonged oral administration of iron nanoparticles in experiments. Materials and methods: Iron nanoparticles 70±10 nm, 28 male white rats, and morphological methods of evaluation have been used in the experiment. Results: Studies have shown that the changes depend on nanoparticle concentration and signs of circulatory disorders and degenerative changes of parenchymatous elements

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