Now showing items 1-10 of 645
Cytotoxicity of Active Ingredients Extracted from Plants of the Brazilian "Cerrado"
(Natural Product Communications, 2011-07-01) [Artigo]
Cytotoxicity assays arc needed for the screening of natural products with potential anti-inflammatory. The purpose of this study was to compare the basal cytotoxicity of active ingredients extracted from plants of the ...
It's not what it looks like: molecular data fails to substantiate morphological differences in two sea hares (Mollusca, Heterobranchia, Aplysiidae) from southern Brazil
(Helgoland Marine Research, 2014-12-01) [Artigo]
Species of sea hares have been recognized traditionally based on morphological traits, mainly the radula, external coloration, and reproductive anatomy. However, recent studies have shown substantial color variation in ...
K-ATP(+) Channels-Independent Analgesic Action of Crotalus durissus cumanensis venom
(Natural Product Communications, 2010-07-01) [Artigo]
The effect was investigated of the K+ channel blocker, glibenclamide, on the ability of Crotalus durissus cumanensis venom (CDCM) to promote peripheral antinociception. This was measured by formalin-induced nociception in ...
Byrsonima fagifolia Niedenzu Apolar Compounds with Antitubercular Activity
(Evidence-based Complementary and Alternative Medicine, 2011-01-01) [Artigo]
Bioassay-guided fractionation of the chloroform extract of Byrsonima fagifolia leaves led to the isolation of active antitubercular compounds alkane dotriacontane (Minimal Inhibitory Concentration-MIC, 62.5 mu g mL(-1)), ...
Antitumor and immunomodulatory effects of the naphthoquinone 5-methoxy-3,4-dehydroxanthomegnin
(Revista Brasileira de Farmacognosia, 2011-12-01) [Artigo]
Large number of quinones has been associated with antitumor, antibacterial, antimalarial and antifungal activities. In this work we describe the effect of the naphthoquinone, 5-methoxy-3,4-dehydroxanthomegnin, on murine ...
Mutagenic and cytotoxic activity of an isocoumarin (Paepalantine) isolated from Paepalanthus vellozioides
(Teratogenesis Carcinogenesis and Mutagenesis, 1997-01-01) [Artigo]
A new isocoumarin with antimicrobial activity was isolated from Paepalanthus vellozioides (a native Brazilian plant) and called paepalantine. This study was carried out to assess the mutagenic activity of this new agent ...
Composition of the volatile compounds from Aniba canelilla (H. B. K.) Mez. extracted by CO2 in the supercritical state
(Revista Brasileira de Farmacognosia, 1998-01-01) [Artigo]
Os constituintes químicos voláteis das cascas de Aniba canelilla (H. B. K.) Mez. (Lauraceae), obtidos por SFE-CO2 (extração com fluido supercrítico utilizando CO2), foram analisados por HRGC-FID (cromatografia gasosa de ...
Constituents of Cassia rugosa
(Fitoterapia, 1993-01-01) [Artigo]
A new cytotoxic naphthopyrone dimer from Paepalanthus bromelioides
(Fitoterapia, 2000-09-01) [Artigo]
A new naphthopyrone dimer was isolated from the capitula of Paepalanthus bromelioides by chromatographic procedures. Its structure was deduced from spectrometric data. On colorimetric assay for cytotoxicity the new dimer ...
Oleanane Saponins and Glycerogalactolipids from the Leaves of Guapira graciliflora
(Helvetica Chimica Acta, 2010-01-01) [Artigo]
Two new saponins, 3-O-[beta-xylopyranosyl-(1 --> 3)-beta-D-galactopyranosyl-(1 --> 3)-beta-glucuronopyranosyl]oleanolic acid 28-O-beta-D-glucopyranosyl ester (1) and the corresponding monodesmoside, 3-O-[beta-xylopyranosyl-(1 ...