Saratov JOURNAL of Medical and Scientific Research

liver

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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Use of cytoceratin-20 in revealing of colorectal cancer metastases in liver

Year: 2013, volume 9 Issue: №1 Pages: 25-28
Heading: Macro- and Micromorphology Article type: Original article
Authors: Fedorina Т.A., Yugina 0.V., Vozdvijenski M.0.
Organization: Samara State Medical University
Summary:

The aim of the study is to evaluate the possibilities of immunohistochemical revealing of colorectal cancer micro-metastases in liver and to determine their prognostic significance. Material et metods. The material of the research was fragments of liver tissue with metastases of 36 patients with colorectal cancer who had undergone resection of liver (main group), and randomly chosen fragments of liver tissue without macro metastases of 18 patients with colorectal cancer who had died in early postoperative period. 5-6 fragments of the liver tissue taken from the margins of the largest macro metastasis with the interval 1-2 cm were investigated in each case. The detection of micro-metastases on the paraffin sections with the thickness of 4 microns was carried out with the use of antibodies to cytoceratin-20. The results showed that micro-metastases in liver in the main group had been found in 75,9%, in the comparative group — just in one observation with accidentally revealed macro metastasis. Correlative analysis showed the direct definite link between the appearance of micro-metastases and the presence of macro metastases in liver. The significance of multimicrometastatic spreading for the development of intrahepatic progression and the worsening of the long term prognosis of the patients with colorectal cancer were noted. Conclusion: the possibility of use cytoceratin-20 for revealing micro-metastases in liver.

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Liver Functional State Changes At Epstein-Barr Virus Mononucleou-sis In Children

Year: 2009, volume 5 Issue: №4 Pages: 572-577
Heading: Infectious Diseases Article type: Original article
Authors: S.A. Khmilevskaya, LA. Zaytseva, E. V. Mikhailova
Organization: Saratov State Medical University
Summary:

The research presents the results of medical observation of 439 patients aged 1-18 with mononucleosis of Epstein-Barr Virus etiology. By means of instrumental and clinical laboratory methods of investigation the peculiarities of liver condition have been revealed in children of different age. The intensity of autosensibilization processes to the tissues of the organ has also been estimated. The results obtained demonstrate the interrelation of clinical, biochemical and instrumental signs of liver damage, as well as contribution of autoimmune processes to the development of organopa-thology at Epstein-Barr Virus infection

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