Dmitry L. Aminin

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Triterpene glycosides are characteristic secondary metabolites of sea cucumbers (Holothurioidea, Echinodermata). They have hemolytic, cytotoxic, antifungal, and other biological activities caused by membranotropic action. These natural products suppress the proliferation of various human tumor cell lines in vitro and, more importantly, intraperitoneal(More)
Estrogenic potency of six triterpene glycosides, Holothurin A, Holotoxin A1, Frondoside A, Cucumarioside A2-2 and Cauloside C, that are natural products and semi-synthesized Ginsenoside-Rh2, were examined with yeast two-hybrid system, including expressed genes of human estrogen receptor, hERalpha, the co-activator TIF2 and lacZ as a reporter gene. Only(More)
The anti-inflammatory activity of the HCGS 1.20 recombinant polypeptide (a Kunitz-type serine protease inhibitor from the Heteractis crispa sea anemone) was investigated. The polypeptide was shown to inhibit the histamine-induced increase in the concentration of calcium ions and the lipopolysaccharidestimulated increase in the concentration of nitric oxide(More)
Since ancient times, edible sea cucumbers have been considered a jewel of the seabed and used in Asian folk medicine for stimulation of resistance against different diseases. However, the power of this sea food has not been established on a molecular level. A particular group of triterpene glycosides was found to be characteristic metabolites of the(More)
161 The search for methods for the targeted destruction of tumor cells is one of the priority tasks of cell biology and molecular biology. In recent years, apoptosis and necrosis and the possibility of activation of these types of programmed cell death by a variety of biologically active compounds are intensely studied [1–6]. One of such natural compounds(More)
The present work reveals the effect of kappa-, lambda- and kappa/beta-carrageenans on the immune modulation and supramolecular structure of lipopolysaccharide (LPS). The kappa/beta carrageenan was able to increase the synthesis of anti-inflammatory interleukin-10 (IL-10) in vitro, and at low concentrations, their activity in the mixture with LPS was higher(More)
Recently, we have shown that two biologically active, disulfated polyhydroxysteroids from the Pacific brittle star Ophiopholis aculeata stimulate Ca(2+) influx into different cell types. In the present study, 45Ca(2+) and two fluorescent calcium probes, quin-2/AM and fura-2/AM, were employed to investigate the course and amplitude of calcium signals induced(More)
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