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A number of biological and physical stimuli have been evaluated as inducers of pseudopterosin biosynthesis in the sea whip Pseudopterogorgia elisabethae. Data indicate that the production of pseudopterosins can be significantly increased in response to high levels of predation by the mollusk Cyphoma...
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OBJECTIVE. To determine the effects of continuous passive motion (CPM) and immobilization on synovitis and cartilage degradation in an experimental model of chronic inflammatory, antigen-induced arthritis. METHODS. After bilateral arthritis induction of knee joints in 22 NZW rabbits, one knee was im...
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The triterpene precursor of saponins in sea cucumbers has been identified as parkeol [lanost-9(11)-en-3 beta-ol] [1]. Dissection of the sea cucumbers Holothuria floridea and Actinopyga agassize after incubations with radiolabeled parkeol demonstrated that saponin biosynthesis occurs exclusively in t...
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Two new sterols, epipolasterol and 22(23)-dihydroepipolasterol, have been isolated from the marine sponge Epipolasis sp. These are unusual metabolites as they both contain a t-butyl group in the sterol side chain. In addition, the presence of two degrees of unsaturation in the side chain of epipolas...
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This report describes a series of experiments designed to determine if terpene biosynthesis is inducible in two families of marine terpenes, pseudopterosins from the gorgonian coral Pseudopterogorgia elisabethae and fuscol from Eunicea fusca. Since we have recently shown that terpene biosynthesis is...
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Isochrysis galbana, one of the most widely used marine microalgae in the rearing of finfish and shellfish larvae, is mass cultured frequently in outdoor tanks. Under prolonged and repeated culture, severe contamination occurs. Axenic isolation of I. galbana from such cultures was best achieved by us...
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A biosynthetic study has been performed to elucidate the precise mechanisms of sterol side chain dealkylation in marine sponges. This process resembles that of insects by involving the oxidation of common dietary sterols with unsaturation at C-24(28) (24-methylenecholesterol (8), fucosterol (3), and...
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The potential use of bFGF immortalized cells as hosts for delivering foreign genes into nervous tissue led us to examine the effect of maintaining, E-18 hippocampal neurons for extended periods in bFGF culture prior to transfer into a standard, serum-containing, medium. We found: (1) many, if not mo...
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Amphilectosins A and B have been identified from the organic extract of Pseudopterogorgia elisabethae collected in the Florida Keys, along with seco-pseudopterosins and pseudopterosins. The structures of the amphilectosins, "C-12-C-13 dehydro seco-pseudopterosins", suggested that these metabolites p...
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A fortified enzyme preparation of the gorgonian Pseudopterogorgia americana or Pseudopterogorgia elisabethae has been developed which efficiently transforms a variety of precursor molecules, e.g., sterols, to their corresponding metabolites, e.g., 9(11)-secosteroid in high yield. NAD, NADP, and glut...
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A small library of semisynthetic analogues of fuscol and eunicol have been prepared and evaluated for in vivo topical anti-inflammatory activity using the mouse-ear edema assay. The first glycosylation of fuscol and eunicol has been achieved using a modified Koenigs-Knorr glycosylation to synthesize...
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The pseudopterosins are a family of diterpene pentosides isolated from the marine octocoral, Pseudopterogorgia elisabethae. These compounds possess non-steroidal anti-inflammatory and analgesic properties which have been shown to be greater than the industry standard, indomethacin. In our investigat...
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Investigations are reported that identify the biosynthetic source and origins of the pseudopterosins, pharmacologically important diterpene glycosides, in the gorgonian coral Pseudopterogorgia elisabethae. We report here the isolation of physiologically significant levels of endogenous pseudopterosi...