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Biomedical subjects

S V Antonenko

Publications and source records attributed to S V Antonenko.

17 recordsLinked to original sources
PubMed2001

Virus-inhibitory effect of a yeast RNA-tilorone molecular complex in cell cultures.

The virus-inhibitory activity of a molecular complex (MC) of tilorone and yeast RNA was studied in vitro on three virus-cell systems: vesicular stomatitis virus (VSV) - murine fibroblast L929 cells, Venezuelan equine encephalittis virus (VEEV) - swine embryo kidney (SEK) cells and encephalomyocarditis virus (EMCV) - established piglet testicular (EPT) cells. In all these systems the MC exerted an antiviral effect similar to that of polynucleotide interferon (IFN) inducers such as poly(I)-poly(C), larifan and ridostin. The antiviral effect of the MC was similar when the compound was applied before or after virus adsorption to cells. The MC may be regarded as a perspective antiviral agent of common use.

Cells, Cultured↗
PubMed1999

[Comparative cytotoxic characteristics of the interferon-inducing yeast RNA-tilorone complex].

Cytotoxicity of the yeast RNA-tilorona molecular complex (MC) with interferonogenic properties and its influence on the DNA replicative synthesis were studied in experiments with human lymphocytes and 3 cell lines. It was shown that the MC doses of 25, 100 and 250 micrograms/ml were absolutely nontoxic for all the cell lines. The main parameters of the MC toxicity based on the cell viability were calculated. The parameters were found to correlate in the order of their magnitude with those relating to interferonogens of the polynucleotide nature. Within the dose ranges of 10 to 100 micrograms/ml the MC had a stimulating effect on replicative processes in the cells. It was concluded that the use of the MC as an inductor in large-scale manufacture of human and animal interferons of type 1 was promising.

Animals↗
PubMed1994

HIV-1 reverse transcriptase inhibitor design using artificial neural networks.

Artificial neural networks were used to analyze and predict the human immunodeficiency virus type 1 reverse transcriptase inhibitors. The training and control sets included 44 molecules (most of them are well-known substances such as AZT, dde, etc.). The activities of the molecules were taken from literature. Topological indices were calculated and used as molecular parameters. The four most informative parameters were chosen and applied to predict activities of both new and control molecules. We used a network pruning algorithm and network ensembles to obtain the final classifier. Increasing of neural network generalization of the new data was observed, when using the aforementioned methods. The prognosis of new molecules revealed one molecule as possibly very active. It was confirmed by further biological tests.

Algorithms↗
PubMed1989

[A clinical and experimental study of longatsef].

Data are reported of the results of clinical trials of the therapeutic efficacy of longaceph--a drug of the new generation of cephalosporins with a long period of half-decay--in acute pneumonia complicating influenza in 42 patients. The sensitivity of 120 microbial strains to longaceph was also studied. It was established that cephalosporin possesses a high efficacy in diseases caused by gram-positive and gram-negative microorganisms. A high degree of sensitivity to longaceph was observed in pneumococci biogenous and Streptococcus viridans, Staphylococcus aureus and epidermidis, klebsiellae and escherichiae. A new property of longaceph was found, namely, its capacity to stimulate the formation of endogenous interferon.

Adult↗
PubMed1986

[Kinetics of DNA reparative replication in the spleen cells of CBA- and C57BL/6-strain mice induced by urethane and and the influenza virus].

Different kinetics of DNA repair replication induced by urethan and influenza virus was detected in mice of varying genotypes. Inhibition of repair replication was detected in the lymphocytes of C57BL/6 mice, infected with influenza virus and treated with urethan. No inhibition of repair replication was noted in CBA mice which is characteristic of resistance to influenza virus. However, stimulation of repair replication by influenza virus was observed in these cells.

Animals↗
PubMed1985

[Study of the effect of parotitis vaccine on DNA repair in human lymphocytes].

The effect of parotitis vaccine virus (strain L-3) on the DNA repair synthesis induced by 4-nitroquinoline-1-oxide has been studied. The efficiency of the repair synthesis depends on individual properties of the human body, viral multiplicity and concentration of the mutagen. A two-fold increase in DNA repair synthesis was obtained after infection of cells with low viral multiplicity (0.001 HADU50 per cell) and using 2.5 x 10(-7) M concentration of the mutagen A ten-fold increase in mutagen concentration affecting the infected cells was accompanied by the inhibition of DNA repair synthesis. Lymphocytes from children studied 7 days after vaccination by the attenuated virus did not reveal any changes in DNA repair synthesis as compared with the cells from nonvaccinated children.

Cells, Cultured↗
PubMed1984

[Regulation of the excisional repair system in in vitro-cultured human cells by measles viruses depending on their attenuation].

The effect of measles viruses (attenuated strain L-16 and virulent strain Edmonston) was studied in human cells (line L-41) according to the criteria of repair: excision of thymine dimers, repair replication of DNA and resynthesis of DNA breaks induced by UV-irradiation. Reproduction of attenuated measles virus in cells was accompanied with stimulation of excision of thymine dimers and repair replication of DNA in contradistinction to mild virus. This phenomenon depended on multiplicity of infection.

Cell Line↗
PubMed1977

[Fluorescent-cytochemical study of the action of benz(a)pyrene on subcutaneous connective tissue cells during malignant transformation in vitro].

Alterations in the secondary DNA structure of cell nuclei of the rat's subcutaneous connective tissue exposed to benz(a)pyrene (BP) action have been revealed using the Roshlay fluorescent-cytochemical method in cultivating in vitro. Alterations in the luminescence of the acridin orange complex with DNA, i.e. displacement towards the red region of spectrum, indicates the changes in the secondary structure of DNA. The strongest action on the primary cultures were noted after the injection of carcinogen (on the 3rd day of explanation). The toxical effect was lower after a repeated BP injection (on the 10th and 20th days of explanation). Cells undergone malignization and transformation, due to the BP action on the primary explantates, were more resistant to carcinogen action than the normal cells. However, the spontaneously malignized cells were more sensitive to the BP action than the cells transformed under the carcinogen action.

Animals↗
PubMedDate not supplied

[Effect of interferonogenic molecular complex of yeast RNA--tilorone on DNA, RNA and protein synthesis in vitro].

In the experiments in vitro using the primary mononuclear cells (MNC) culture of the human peripheral blood the influence of interferonogenic yeast RNA-tilorone molecular complex on the DNA, RNA and protein synthesis was studied. The complex was shown to inhibit the insertion of 3H-thymidine, 3H-uridine and 3H-leucine into DNA, RNA and protein of MNC total pool (by 13, 1 and 40% respectively); that was practically conformed with this synthesis inhibition upon to a natural origin polynucleotide interferon inducers--lariphan (9, 0 and 57% respectively) and ridostin (9, 0 and 56% respectively) action, and at the same time rather less than poly(I)-poly(C) (14, 5 and 62% respectively). In the case of preliminary cell stimulation by the mitogen PHA the complex revealed comitogenic action at a concentration 25 micrograms/ml, that corresponded to optimal for interferonogenesis; the increase of the doses till 100-1000 micrograms/ml lead to in the reversal effect. To proceed from mutual relation between interferonogen preparations influence on the mentioned synthesis and their cytotoxicity the conclusion was about made the complex promising usage as an interferon inducer both in vitro and in vivo conditions.

Fungal Proteins↗
PubMedDate not supplied

[The immunological manifestations and cytological characteristics of infection caused by the simian immunodeficiency virus (SIV) in rhesus monkeys].

The results of immunological and morphological studies of Asian macaques (Macaca mulatta) infected by simian immunodeficiency virus (SIV) are summarized in this review of literature. This virus causes development of the immunodeficiency disease that closely resembles human AIDS. Immunological parameters (CD count, antibody response etc.) are described promoting prediction of progression of immunodeficiency in monkeys. The morphological features of injury of internal organs indicate that SIV-induced immunodeficiency is the multisystem disease.

Acquired Immunodeficiency Syndrome↗
PubMedDate not supplied

[Study of anti-HIV activity of the yeast RNA-tilorone molecular complex].

Anti-HIV activity of the molecular complex forming during interaction between yeast RNA and tilorone was studied in vitro on the models of acute and chronic infection. Addition of this agent to the cells infected with HIV-1/IIIB and HIV-1/BRU decreased the virus reproduction controlled by assessing the viability of cells, syncytium production, and accumulation of p24 antigen in culture medium. The authors hypothesize that the detected anti-HIV effect is due to its capacity to produce type I interferon and direct antiviral action.

Anti-HIV Agents↗
PubMedDate not supplied

[The depression of the reproduction of the human immunodeficiency virus by the use of Bogomolets antireticular cytotoxic serum].

The action of the Bogomolets' antireticular cytotoxic serum (ACS) as a HIV-1 reproduction inhibitor was studied on the model of human lymphoblastoid cell line MT-4/BRU (acute infection). The HIV-1 reproduction inhibition was estimated according to cell protection level for virus cytopathic action and p24 antigen level in the cultural media. The both tests data on ACS usage in dilutions 1:160-1:640 prove that the virus inhibition effect which may be compared with anti-HIV action of the well-known agent, azidothymidine, was observed. At this dilutions range ACS is devoid of the cell toxicity. The conclusion about perspectivity of ACS usage in the AIDS complex therapy was drawn.

Anti-HIV Agents↗