Publications by authors named "Tazulakhova E"

The purpose of the study was to compare the effect of para-aminobenzoic acid (PABA) (actipol) on tear interleukin-6 (IL-6) levels in patients with herpetic keratitis and in peripheral blood cells of volunteers in vitro. Enzyme immunoassay was used to measure lacrimal fluid IL-6 levels in the actipol and acyclovir groups before and 1, 2, 3, 4, and 7-8 days after therapy and after clinical recovery in 30 patients with herpetic keratitis. A control group comprised apparently healthy volunteers (n=13, 26 eyes) who used actipol instillations into the conjunctival sac 4-5 times a day.

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The action of amixin and cycloferon on the expression of genes in the systems of interferon (IF) and cell apoptosis (CA) was studied by semi-quantitative RT-PCR in human blood microsamples before and after the administration of the drugs. Individual changes were determined in the transcription activity of genes of IF (alpha, beta, gamma), enzymes 2',5' oligoadenylatesynthetase (OAS), RNSase L, dsRNA-dependent proteinkinase (dsPK) and of CA effectors (FasAg, bcl-2, gamma-actin) registered dynamically in 24 h and 48 h. The activity parameters of IF genes were compared with the results of biological titration of IF activity in blood samples in vivo and in vitro.

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High interferon-inducing activity of a new antiviral drug actipol (0.007% para-aminobenzoic acid) instilled into the eye was demonstrated in animal experiments. In the present study the effect of actipol on interferon production in ocular tissues was investigated clinically.

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Interferon (IFN) status was evaluated in 20 patients with various forms of herpetic keratitis over the course of treatment with actipol (0.07% para-aminobenzoic acid). Actipol was injected subconjunctivally parabulbarly in combination with instillations into the conjunctival sac or only instilled, depending on the disease severity.

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This review describes a long-standing experience of screening for interferon (IFN) inducers in Russia. IFN inducers represent a special group of potential antiviral compounds. The main requirements for them are (1) high IFN-inducing activity, (2) absence of side effects, (3) wide spectrum of antimicrobial activity, (4) broad therapeutic security and, (5) good solubility in water and biologic liquids.

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Para-aminobenzoic acid (PABA) was shown to be an early type interferon inductor. PABA (10 micrograms/ml) induced interferon production in vitro in the cells of human peripheral blood and in vivo in albino mice (10 mg/kg). The results of the study suggested that PABA was able to induce production of interferon-alpha/beta in various immunocyte populations.

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Interferon (IFN) inducers are the agents having a wide range of antiviral activity. They have not only etiotropic, but marked immunomodulating effects. INF inducers different in its nature cause IFN synthesis in different immunocytic populations.

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Para-aminobenzoic acid (PABA) is an early interferon inductor. The present study assesses the interferon-inducing activity of PABA (0.007 and 0.

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Different methods of prophylactic treatment with influenza virus vaccine increase survival of irradiated mice and hamsters by 25-55% as compared to unprotected ones. Higher radioresistance occurs in the same time intervals as a rise of interferon in the blood after immunization with influenza virus vaccine.

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The efficiency of interferon inductor, kagocel, in hemopoiesis and immunity disturbances caused by sublethal doses of ionizing radiation was investigated. The experiments showed that irradiation of mice with a dose of 0.9 Gy causes short-term drop of a number of cells in the bone marrow and lymphoid organs, reducing of CFUs and CFU-GM levels, decrease in a number of antibody-formation cells in spleen and falling of reaction of blast-transformation of lymphocytes.

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A model for secondary postradiation immunodeficiency of mice has been used to compare immunocorrective activities of some new immunomodulators (arbidol, cagocel, myelopid, proleukinferon and fragmine) administered at late times (2-3 months) after exposure to a nonlethal radiation dose (4.0 Gy). The highest immunocorrective effect has been shown with fragmine and proleukinferon.

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Combined use of vaccine and immunomodulators such as ridostin, inosiplex and polyribonate against acute encephalomyelitis of humans (AEMHs) was studied. It was shown that low immunogenic doses of the vaccine did not provide a protective action against the virus of AEMHs while after administration of the vaccine in combination with the immunomodulators there was protection in all the groups of the animals exposed to the low immunogenic doses of the vaccine during the first immunization. It was noted in regard to all the combinations of the immunomodulators and vaccine used in the low immunogenic doses that the level of the increase in the titer of the virus-specific antibodies, the proliferative activity to the specific antigen and mitogens and of interferon induction depended on the immunomodulator type.

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Interferon-inducing activity of the interferon inductor savrats, an oxybenzylamine derivative of was studied. It was shown on experimental animals that along with its low toxicity, savrats had a high interferon inducing capacity. There were early and late peaks of interferon production (4-8 and 48-96 hours later, respectively) depending on the route of the inductor administration.

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The pharmacokinetics of PHL-6 and interferon synthesis dynamic in the target organs (tissues) of mice were studied during its and intraperitoneal administration. In the experimental setting, there was a direct correlation between the interferon production in the murine organs with single PHL-6 and distribution of 14C PHL-6. The highest radioactivity with its oral administration was detected in the liver and intestine.

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Interferon (IF) was synthesized in animals by diverse populations of immunocytes in response to induction by various low molecular weight aromatic hydrocarbons. The level of the involvement of either population of the immunocytes in IF production is determined by the chosen inductor. IF induction by acridanone L-1 was mainly observed in macrophages and B-lymphocytes.

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Aromatic hydrocarbons are rightly considered to belong to most active synthetic interferon inducers among low molecular compounds. A comparative evaluation of L-1 (acridanon) and amixin (fluorenon) showed L-1 to have more marked interferon-inducing properties. Both compounds differed not only in the dynamics and levels of interferon synthesis in different organs which suggests the possibility of their employment in different diseases, but also in the efficacy of the modes of application.

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The role of macrophages in production of interferons (IF) is manysided. They are able to synthesize IFs after any induction. However, the function of macrophages as producers of IFs is not, probably, basic.

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Tolerance and interferon-inducing activity of amixine, an interferon inducer, was studied by the double-blind method clinically in healthy volunteers given tableted amixine orally in doses of 0.125-0.25 g by different schedules.

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Interferon (IF)-inducing capacity of C. trachomatis was shown in experiments on mice CBA. The levels of IF production in the parenchymatous organs correlated with accumulation of the pathogen in them.

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Interrelationship between phosphorylation of plasmatic membrane proteins in brain cells and the rate of mice encephalomyocarditis virus adsorption was studied. Phosphorylation of proteins induced by dsRNA (laryphane) was most distinctly manifested in membrane fraction and cytosol of rat brain neuronal cells. Similarity of molecular mass spectra in dsRNA- and cAMP-dependent phosphorylation enabled to suggest that dsRNA activated protein kinase.

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The interferon-stimulating effect of immunomodulators is manifested after their combined inoculation with double-stranded NRAs (dsRNA) of natural and synthetic origin, and depends upon the time of administration of an inducer with respect to an immunomodulator and upon the dose of dsRNA. It is manifested as prolongation of interferon circulation in the bloodstream of animals up to 3 days when inosiplex is used as an immunomodulator. A still greater effect is observed when its derivative ASK is used instead of inosiplex.

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Data on the immunomodulating activity of interferon inductors are presented. It was revealed that the inductors increased the animal vaccinal response. Schemes for combined use of the interferon inductors and immunomodulators were developed.

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