Potent Immunosuppressive Principles, Dimeric Sesquiterpene Thioalkaloids, Isolated from Nupharis Rhizoma, the Rhizoma of Nuphar pumilum (Nymphaeaceae): Structure-Requirement of Nuphar-Alkaloid for Immunosuppressive Activity.
نویسندگان
چکیده
منابع مشابه
Evidence for the hybrid origin of Nuphar xrubrodisca (Nymphaeaceae).
Plants intermediate in appearance between Nuphar microphyllaand N. variegata (Nymphaeaceae) have long been assumed to bethe result of hybridization. The evidence for this is based primarilyon field observations of morphology, poor fruit production, closegeographical proximity of presumed parent species, and limited pollensterility data. Fertile populations of the same plants have also beendocum...
متن کاملMicrosatellite markers for Nuphar japonica (Nymphaeaceae), an aquatic plant in the agricultural ecosystem of Japan1
PREMISE OF THE STUDY Nuphar species (Nymphaeaceae) are representative aquatic plants in irrigation ponds in Japanese agricultural ecosystems. We developed 15 polymorphic microsatellite markers for N. japonica and confirmed their utility for its close relatives N. oguraensis var. akiensis and N. ×saijoensis, which originated from natural hybridization between N. japonica and N. oguraensis. MET...
متن کاملPhylogenetic relationships in Nuphar (Nymphaeaceae): evidence from morphology, chloroplast DNA, and nuclear ribosomal DNA.
The genus Nuphar consists of yellow-flowered waterlilies and is widely distributed in north-temperate bodies of water. Despite regular taxonomic evaluation of these plants, no explicit phylogenetic hypotheses have been proposed for the genus. We investigated phylogenetic relationships in Nuphar using morphology and sequences of the chloroplast gene matK and of the internal transcribed spacer (I...
متن کاملPartial Purification of a Potent Immunosuppressive Factor Excreted from Leishmania major Promastigote and Amastigote
Recent scientific evidence indicates that distinct patterns of susceptibility in BALB/c mice to Leishmania major infection are attributable to the differential expansion of distinct CD4+ T-cell subsets and their cytokines production. Production of the Th1 cytokine IFN-g is associated with resistance, whereas production of the Th2 cytokines IL-4 and IL-10 are associated with extreme susceptibili...
متن کاملExtraction, Characterization and Immunological Activity of Polysaccharides from Rhizoma gastrodiae
A response surface and Box-Behnken design approach was applied to augment polysaccharide extraction from the residue of Rhizoma gastrodiae. Statistical analysis revealed that the linear and quadratic terms for three variables during extraction exhibited obvious effects on extraction yield. The optimum conditions were determined to be a liquid-to-solid ratio of 54 mL/g, an extraction temperature...
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ژورنال
عنوان ژورنال: Biological and Pharmaceutical Bulletin
سال: 1996
ISSN: 0918-6158,1347-5215
DOI: 10.1248/bpb.19.1241