Results 131 to 140 of about 10,128 (146)

Uncaria guianensis (Aubl.) J.F. Gmel. Uncaria tomentosa (Willd.) DC. Rubiaceae Mimosa acantholoba (Humb. & Bonpl. ex Willd.) Poir. Fabaceae

Ethnobotany of Mountain Regions, 2020
Rainer W Bussmann, Narel Paniagua-Zambrana   +1 more
exaly   +2 more sources

Bioactive Indole Alkaloids from the Bark ofUncaria guianensis

Planta Medica, 1999
Bioassay-guided fractionation of the EtOH extract of the bark of Uncaria guianensis (Aubl.) Gmel (Rubiaceae) using a yeast-based assay for DNA-damaging agents has furnished the two weakly but selectively active indole alkaloids uncarine C (1) and uncarine E (2) as the major bioactive constituents in this assay.
K K, Lee, B N, Zhou, D G, Kingston, A J, Vaisberg, G B, Hammond   +4 more
openaire   +2 more sources

Anti-inflammatory and antioxidant activities of cat's claw (Uncaria tomentosa and Uncaria guianensis) are independent of their alkaloid content

Phytomedicine, 2002
Cat's claw is an herbal medicine from the Amazon that is used widely to treat inflammatory disorders. The purpose of this study was to characterize the antioxidative and antiinflammatory properties of cat's claw, Uncaria tomentosa (UT) and Uncaria guianensis (UG).
M, Sandoval, N N, Okuhama, X J, Zhang, L A, Condezo, J, Lao, F M, Angeles', R A, Musah, P, Bobrowski, M J S, Miller   +8 more
openaire   +2 more sources

Chemical differentiation between Uncaria tomentosa and Uncaria guianensis by LC-PDA, FT-IR and UV methods coupled to multivariate analysis: A reliable tool for adulteration recognition

Microchemical Journal, 2020
Abstract Uncaria guianensis (UG) and Uncaria tomentosa (UT) are widely found in the South America rainforest. Both species, popularly known as cat's claw, can be easily differentiated in natural state through their morphological characteristics. However, the discrimination of their derivatives, such as dried extracts, is limited to differences in ...
Pedro Ernesto de Resende, Carvalho A R, Samuel Kaiser   +2 more
exaly   +3 more sources

Bark and Wood Anatomy of Uncaria Guianensis and Uncaria Tomentosa (“Cat's claw”)

IAWA Journal, 2005
Uncaria guianensis (Aubl.) J.F. Gmel. and Uncaria tomentosa (Willd. ex Roem. & Schult.) DC. (Rubiaceae) have a bark commonly used medicinally by ethnic peoples in South America. Both plants, which are called “cat's claw”, are now being commercialised, but unfortunately they are often sold adulterated with other species.
openaire   +1 more source

Efficacy and safety of freeze-dried cat's claw in osteoarthritis of the knee: mechanisms of action of the species Uncaria guianensis

Inflammation Research, 2001
The purpose of this investigation was to evaluate the ability of cat's claw, an Amazonian medicinal plant, to treat osteoarthritis of the knee, collect safety and tolerance information and compare the antioxidant, and anti-inflammatory actions of Uncaria guianensis and Uncaria tomentosa in vitro.Forty-five patients with osteoarthritis of the knee were ...
J, Piscoya, Z, Rodriguez, S A, Bustamante, N N, Okuhama, M J, Miller, M, Sandoval   +5 more
openaire   +2 more sources

Optimized Kaempferitrin Isolation fromUncaria guianensisLeaves by Solid-Phase Extraction

Journal of Liquid Chromatography & Related Technologies, 2014
A simple and low-cost solid-phase extraction methodology for isolating the bioactive flavonoid kaempferitrin from a defatted fraction of the Uncaria guianensis leaf ethanol extract was developed using the kaempferitrin retention behavior in reversed-phase-high-performance liquid chromatography as well as thin-layer chromatography coupled to ImageJ ...
Rodolfo S. Barboza, José L. Mazzei, Ligia M. M. Valente, Antonio C. Siani   +3 more
openaire   +1 more source

Scale-up of polyphenolic isolation by HPLC from Uncaria guianensis leaves by applying chromatographic models

Planta Medica, 2012
Uncaria guianensis (UG) (Rubiaceae) is a species widely used in traditional medicine. The EtOH extract of their leaves has demonstrated anti-inflammatory and anti-allergic activities. In this work Semi-Prep-HPLC was employed to separate the polyphenolic compounds present in the UG EtOH leaf extract by applying chromatographic models.
RS Barboza, BR Rocha, AC Siani, LMM Valente, JL Mazzei   +4 more
openaire   +1 more source

Alcaloïdes de l'Uncaria guianensis

Planta Medica, 1983
J Bruneton
exaly  

PROSPECÇÃO FITOQUÍMICA, ANÁLISE TOXICOLÓGICA E AÇÃO ANTIPARASITÁRIA DA UNCARIA GUIANENSIS SOBRE NEMATÓDEOS DE OVINOS

2021
Igor da Silva Dias, Sara Lucena de Amorim, Alex Cicinato Paulino de Oliveira   +2 more
openaire   +1 more source