| chemical forms of radioactive iodine in seawater and its effects upon marine organisms. | chemical forms of radioactive iodine and its effects upon marine organisms were studied by the tracer experiments. seaweeds or fish were held in the aquarium in which the 125i tracer in either iodide or iodate form was inoculated. iodide form of 125i was taken by dorome (chasmichthys gulosus) with the concentration factor of about 10 and excreted with the biological half-life of 15 days, while iodate form of 125i was not taken up appreciably and the concentration factor did not greatly exceed un ... | 1983 | 6658018 |
| in vivo antitumor and immunomodulation activities of different molecular weight lambda-carrageenans from chondrus ocellatus. | lambda-carrageenan is a sulfated galactan isolated from some red algae and have been reported to have many kinds of biological activities. lambda-carrageenan from chondrus ocellatus, an important economic alga in china and many other parts of the world, was degraded by microwave, and obtained five products that have different molecular weight: 650, 240, 140, 15, 9.3 kda. analytical results confirmed that microwave degradation might not change the chemical components and structure of polysacchari ... | 2004 | 15082028 |
| in vivo growth-inhibition of s180 tumor by mixture of 5-fu and low molecular lambda-carrageenan from chondrus ocellatus. | lambda-carrageenan is a sulfated galactan isolated from some red algae and have been reported to have many kinds of biological activities. chondrus ocellatus is an important economic alga in china and many other parts of the world. the sample was obtained after lambda-carrageenan from the alga was degraded by microwave and its molecular weight is 9.3 kda. in this study, tumor inhibiting activity of low molecular weight lambda-carrageenan and its mixture with 5-fu on mice transplanted with s180 t ... | 2005 | 15629261 |
| effect of low molecular lambda-carrageenan from chondrus ocellatus on antitumor h-22 activity of 5-fu. | lambda-carrageenan is a kind of sulfated galactan isolated from some red algae and reported to have more biological activities than other types, such as k-type [güven kc, özsoy y, ulutin on. anticoagulant, fibrinolytic and antiaggregant activity of carrageenans and alginic acid. bot mar 1991; 34: 429-432]. the molecular weight (mw) of lambda-carrageenan reaches up to 600-700 kda, the high mw decreased their solubility and limited their bioactivities. at the same time, the production and applicat ... | 2006 | 16310373 |
| meroterpenes from an algicolous strain of penicillium echinulatum. | one new meroterpene, arisugacin k (1), and four known ones, arisugacin j (2), arisugacin g (3), arisugacin c (4), and territrem c (5), were isolated from the culture of penicillium echinulatum pt-4, an endophytic fungus isolated from the marine red alga chondrus ocellatus. the structure and the absolute configuration of 1 were unambiguously elucidated by spectroscopic analyses and quantum chemical calculations, which further resulted in the assignments of absolute configurations for the other ar ... | 2014 | 24482051 |
| phylogeographic structure and deep lineage diversification of the red alga chondrus ocellatus holmes in the northwest pacific. | a major goal of phylogeographic analysis using molecular markers is to understand the ecological and historical variables that influence genetic diversity within a species. here, we used sequences of the mitochondrial cox1 gene and nuclear internal transcribed spacer to reconstruct its phylogeography and demographic history of the intertidal red seaweed chondrus ocellatus over most of its geographical range in the northwest pacific. we found three deeply separated lineages a, b and c, which dive ... | 2015 | 26334439 |
| citreitalea marina gen. nov., sp. nov., a novel member of the family flavobacteriaceae isolated from a marine red alga and emended description of the genus gangjinia. | a gram-negative, strictly aerobic, pale-yellow pigmented, rod-shaped bacterium designated a4o-5(t) was isolated from a red coloured marine alga (chondrus ocellatus holmes). phylogenetic analyses based on the 16s rrna gene sequence indicated that the new strain was affiliated with the family flavobacteriaceae and shared approximately 90 % sequence similarity with leptobacterium flavescens ym3-0301(t) and gangjinia marincola gj16(t). the strain could be differentiated phenotypically from the relat ... | 2014 | 24866884 |
| protective effect of the edible brown alga ecklonia stolonifera on doxorubicin-induced hepatotoxicity in primary rat hepatocytes. | as part of our efforts to isolate anti-hepatotoxic agents from marine natural products, we screened the ability of 14 edible varieties of korean seaweed to protect against doxorubicin-induced hepatotoxicity in primary rat hepatocytes. | 2014 | 24628384 |
| seaweed extracts as a potential tool for the attenuation of oxidative damage in obesity-related pathologies(1). | recent studies suggest that seaweed extracts are a significant source of bioactive compounds comparable to the dietary phytochemicals such as onion and tea extracts. the exploration of natural antioxidants that attenuate oxidative damage is important for developing strategies to treat obesity-related pathologies. the objective of this study was to screen the effects of seaweed extracts of 49 species on adipocyte differentiation and reactive oxygen species (ros) production during the adipogenesis ... | 2011 | 27021984 |