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Stonik, I.V.,Orlova, T.Yu. Korea Institute of Ocean ScienceTechnology 2002 Ocean and Polar Research Vol.24 No.4
The qualitative and quantitative composition of the phytoplankton of the coastal waters off Vladivostok during the period 1991-1994 was studied. The following trends in the phytoplankton composition with decreasing distance from the source of eutrophication were revealed: 1) total density and bio-mass increased; 2) the density of the diatom Skeletonema costatum, which reflects a decrease in the Shannon-Weaver species diversity index during the summer microalgal bloom, increased significantly; and 3) the density of the non-diatom component of the phytoplankton increased.
I. V. Stonik,T. Yu. Orlova,A. A. Begun 한국해양과학기술원 2008 Ocean science journal Vol.43 No.1
Potentially toxic diatoms Pseudo-nitzschia calliantha and P. fraudulenta were found in bottle samples of phytoplankton collected in Amurskii Bay (East/Japan Sea) and in the coastal waters of Sakhalin Island (East/Japan Sea and Sea of Okhotsk) in different seasons during 2002-2006. The mass development of these species occurred in October and November 2002 at water temperatures of 6-16ûC and salinities of 28.8-33.5 PSU. The highest concentrations of P. calliantha and P. fraudulenta were about 2×105 cells L-1 and 1.5×105 cells L-1, respectively. P. fraudulenta was found for the first time in the Russian waters of the East/Japan Sea. Morphological descriptions of these species based on observation with light and electron microscopy and information on their ecology are presented. Data on the geographical distribution of these species are supplemented.
Species of the Genus Eutreptiella (Euglenophyceae) from Russian Waters of East/Japan Sea
I. V. Stonik 한국해양과학기술원 2007 Ocean science journal Vol.42 No.2
The paper reviews data available on euglenophycean algae of the genus Eutreptiella from the Russian waters of East/Japan Sea. Five species (such as E. braarudii, E. eupharyngea, E. gymnastica, E. cf. marina, and E. pascheri) were identified in our study. E. cf. marina and E. pascheri were found for the first time in the far eastern seas of Russia (including East/Japan Sea, Bering and Okhotsk seas). Morphological descriptions of species are based on light and electron microscopical studies and supplied with information on ecology and distribution. Original micrographs of these species obtained by light and electron microscopy are presented. It was established that E. eupharyngea, E. gymnastica, and E. pascheri cause water “blooms” in spring and summer in eutrophic coastal areas of Peter the Great Bay (East/Japan Sea), where their cell concentrations at these periods exceed 1 x 106 cells l-1.
Species of the Genus Eutreptiella (Euglenophyceae) from Russian Waters of East/Japan Sea
Stonik, I.V. The Korean Society of Oceanography 2007 Ocean science journal Vol.42 No.2
The paper reviews data available on euglenophycean algae of the genus Eutreptiella from the Russian waters of East/Japan Sea. Five species (such as E. braarudii, E. eupharyngea, E. gymnastica, E. cf. marina, and E. pascheri) were identified in our study. E. cf. marina and E. pascheri were found for the first time in the fare astern seas of Russia (including East/Japan Sea, Bering and Okhotsk seas). Morphological descriptions of species are based on light and electron microscopical studies and supplied with information on ecology and distribution. Original micrographs of these species obtained by light and electron microscopy are presented. It was established that E. eupharyngea, E. gymnastica, and E. pascheri cause water "blooms" in spring and summer in eutrophic coastal areas of Peter the Great Bay (East/Japan Sea), where their cell concentrations at these periods exceed $1\times10^6\;cells\;l^{-1}$.
Stonik, I.V.,Orlova, T.Yu.,Begun, A.A. The Korean Society of Oceanography 2008 Ocean science journal Vol.43 No.1
Potentially toxic diatoms Pseudo-nitzschia calliantha and P. fraudulenta were found in bottle samples of phytoplankton collected in Amurskii Bay (East/Japan Sea) and in the coastal waters of Sakhalin Island (East/Japan Sea and Sea of Okhotsk) in different seasons during 2002-2006. The mass development of these species occurred in October and November 2002 at water temperatures of $6-16^{\circ}C$ and salinities of 28.8-33.5 PSU. The highest concentrations of P. calliantha and P. fraudulenta were about $2{\times}10^5\;cells\;L^{-1}$ and $1.5{\times}10^5\;cells\;L^{-1}$, respectively. P. fraudulenta was found for the first time in the Russian waters of the East/Japan Sea. Morphological descriptions of these species based on observation with light and electron microscopy and information on their ecology are presented. Data on the geographical distribution of these species are supplemented.
I.V. Stonik,T. Yu. Orlova 한국해양과학기술원 2002 Ocean and Polar Research Vol.24 No.4
The qualitative and quantitative composition of the phytoplankton of the coastal waters off Vladivostok during the period 1991-1994 was studied. The following trends in the phytoplankton composition with decreasing distance from the source of eutrophication were revealed: 1) total density and biomass increased; 2) the density of the diatom Skeletonema costatum, which reflects a decrease in the Shannon-Weaver species diversity index during the summer microalgal bloom, increased significantly; and 3) the density of the non-diatom component of the phytoplankton increased.
Jin, J.O.,Shastina, V.V.,Shin, S.W.,Xu, Q.,Park, J.I.,Rasskazov, V.A.,Avilov, S.A.,Fedorov, S.N.,Stonik, V.A.,Kwak, J.Y. North-Holland Pub ; Elsevier Science Ltd 2009 FEBS letters Vol.583 No.4
Frondoside A is a pentaoside having an acetyl moiety at the aglycon ring and xylose as a third monosaccharide residue. Cucumarioside A<SUB>2</SUB>-2 is a pentaoside having glucose as a third monosaccahride unit. We compared the effects of frondoside A and A<SUB>2</SUB>-2 for cell death-inducing capability with close attention paid to structure-activity relationships. Both frondoside A and A<SUB>2</SUB>-2 strongly induced apoptosis of leukemic cells. Frondoside A-induced apoptosis was more potent and rapid than A<SUB>2</SUB>-2-induced apoptosis. A<SUB>2</SUB>-2-induced but not frondoside A-induced apoptosis was caspase-dependent. This suggests that holothurians may induce apoptosis of leukemic cells caspase-dependently or -independently, depending on the holothurian structure.
D.L. Aminin,I.G. Agafonova,V.I. Kalinin,A.S. Silchenko,S.A. Avilov,V.A. Stonik,P.D. Collin,C. Woodward 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.3
Frondoside A, a major triterpene glycoside from North Atlantic commercially harvested sea cucumber Cucumaria frondosa, possesses strong immunomodulatory properties in subtoxic doses. Frondoside A stimulates lysosomal activity of mouse macrophages in vivo at a maximal effective stimulatory dose of 0.2 μg per mouse and is maintained over 10 days. This glycoside also shows a 30% stimulation of lysosomal activity in mouse macrophages in vitro at concentrations of 0.1–0.38 μg/mL. Frondoside A enhances macrophage phagocytosis of the bacterium Staphylococcus aureus in vitro at a maximal effective concentration of 0.001 μg/mL. Frondoside A stimulates reactive oxygen species formation in macrophages in vitro at a maximal effective concentration of 0.001 μg/mL. Frondoside A stimulates an increase in the number of antibody plaque-forming cells (normally B-cells in spleen) in vivo with a maximal stimulatory effect at a concentration of 0.2 μg per mouse (stimulatory index, 1.86). Frondoside A has a weak effect upon immunoglobulin (Ig) M production after immunization with sheep erythrocytes in mice. Frondoside A does not stimulate Ig production in mice and does not significantly enhance the ovalbumin-stimulated IgM and IgG antibody levels in ovalbumin-immunized mice. Hence frondoside A is an immunostimulant of cell-based immunity including phagocytosis without a significant effect on amplification of humoral immune activity or adjuvant properties. Therefore, frondoside A may provide curative and/or preventive treatment options against diseases wherein a depleted immune status contributes to the pathological processes.
Anticancer Activity of 3-Demethylubiquinone Q2. In Vivo Experiments and Probable Mechanism of Action
Fedorov, S.N.,Radchenko, O.S.,Shubina, L.K.,Balaneva, N.N.,Agafonova, I.G.,Bode, A.M.,Jin, J.-O.,Kwak, J.-Y.,Dong, Z.,Stonik, V.A. INTERNATIONAL INSTITUTE OF ANTICANCER RESEARCH 2008 Anticancer research Vol.28 No.2