Dermotropic activity of the aqueous extract from caragana jubata shoots on the model of atopic contact dermatitis
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01.01.2018 |
Kakorin P.
Kozin S.
Ramenskaya G.
Pavlova L.
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Eksperimental'naya i Klinicheskaya Farmakologiya |
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2 |
Ссылка
© 2018 Izdatel'stvo Meditsina. All rights reserved. This research was aimed at the pharmacological analysis of dermotropic activity ofCaragana jubata (Pall.) poiraqueous extract on the model of atopic contact dermatitis induced by 2,4-dinitrochlorobenzene in male rats. It was found that the aqueous C. jubata extract exhibited expressed dermotropic activity as manifested by reducing thickness of the skin fold by 47% (p = 0.05) and decreasing severity of the onset of contact dermatitis on the average by 38% (p = 0.05). Histological examination showed positive trends in the regeneration of skin lesion. Hematologic examination showed normalization of peripheral blood parameters in animals affected by contact dermatitis. Calculations of the index of inhibition of the inflammatory response confirmed anti-inflammatory effect of the aqueous C. jubata extract.
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The immunotoxicological pattern of subchronic and chronic benzene exposure in rats
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Караулов Александр Викторович
Карсонова Антонина Васильевна
Несвижский Юрий Владимирович
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Toxicology Letters |
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Exposure to benzene and its inevitable metabolites can result in deleterious effects on human health, including lymphocytopenia, hematotoxicity and cancer. However, the duration of exposure might alter the effects including immune consequences. The aim of this study was to determine whether benzene could modulate lymphocyte proliferation induced by the T cell mitogen concanavalin A, in rats, at different exposure durations. 386 Wistar rats were assigned into control and treatment groups which were subdivided into groups for 45, 90 and 135days for 0,6mL/kg of drinking water mixed benzene treatment. The percentage of CD3+, CD4+, CD8+ spleen lymphocytes was defined using the flow cytometer. Interleukin (IL)-4, IL-6, IL-10 and interferon-gamma, in supernatants of splenocyte cultures stimulated with Concanavalin A, were assessed by enzyme-linked immunosorbent assay (ELISA) technique. The decrease in the total lymphocyte and T cell counts were associated with increased benzene exposure duration. Th2-type cytokine, IL-4 significantly increased, whereas IL-6, CD4+T cells, CD4+/CD8+ ratio and CD3+ T cells decreased. Despite the positive correlation between benzene toxicity and indicated increased immune responses, 45-day exposure to benzene appeared to be the most sensitive time point for evaluating benzene cytotoxicity.
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PUBMED DOI |
The immunotoxicological pattern of subchronic and chronic benzene exposure in rats
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Караулов Александр Викторович (Заведующий кафедрой)
Карсонова Антонина Васильевна (Ассистент)
Несвижский Юрий Владимирович (Профессор)
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Toxicology Letters |
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Exposure to benzene and its inevitable metabolites can result in deleterious effects on human health, including lymphocytopenia, hematotoxicity and cancer. However, the duration of exposure might alter the effects including immune consequences. The aim of this study was to determine whether benzene could modulate lymphocyte proliferation induced by the T cell mitogen concanavalin A, in rats, at different exposure durations. 386 Wistar rats were assigned into control and treatment groups which were subdivided into groups for 45, 90 and 135days for 0,6mL/kg of drinking water mixed benzene treatment. The percentage of CD3+, CD4+, CD8+ spleen lymphocytes was defined using the flow cytometer. Interleukin (IL)-4, IL-6, IL-10 and interferon-gamma, in supernatants of splenocyte cultures stimulated with Concanavalin A, were assessed by enzyme-linked immunosorbent assay (ELISA) technique. The decrease in the total lymphocyte and T cell counts were associated with increased benzene exposure duration. Th2-type cytokine, IL-4 significantly increased, whereas IL-6, CD4+T cells, CD4+/CD8+ ratio and CD3+ T cells decreased. Despite the positive correlation between benzene toxicity and indicated increased immune responses, 45-day exposure to benzene appeared to be the most sensitive time point for evaluating benzene cytotoxicity.
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PUBMED DOI |