The anatomy of young and old stems of Aristolochia macrophylla has been investigated for a better understanding of how secondary growth processes cause changes in the stem anatomy of a lianescent plant. In A. macrophylla, following an increase in volume of secondary vascular tissues, the cortical tissues are deformed and the outer sclerenchymatous cylinder ruptures. Morphometric measurements pr...

Despite its appeal to explain plant invasions, the enemy release hypothesis (ERH) remains largely unexplored for tropical forest trees. Even scarcer are ERH studies conducted on the same host species at both the community and biogeographical scale, irrespective of the system or plant life form. In Cabrits National Park, Dominica, we observed patterns consistent with enemy release of two introdu...

Traditional medicine has provided a number of therapeutic solutions for the control of infectious agents, cancers, and other diseases. After screening a wide variety of Colombian plant extracts, we have identified promising antileishmanial activity in ethanol extracts from Ocotea macrophylla (Lauraceae) and Zanthoxyllum monophyllum (Rutaceae). In this study, we evaluated the in vitro activity o...

background and objectives: the aerial part extracts of eremostachys macrophylla  from labiatae family, which has been traditionally used in wound healing, snake bites, rheumatism and joint pains, were investigated for general toxicity, anti-proliferative, free radical scavenging and anti-bacterial effects.moreover, preliminary phytochemical investigations were carried out on the extracts. metho...

1 UMAE Hospital de Especialidades Centro Médico Nacional de Occidente IMSS, Guadalajara, Jalisco, Mexico, 2 UMAE Hospital de Gineco-Obstetricia Centro Médico Nacional de Occidente IMSS, Guadalajara, Jalisco, Mexico, 3 UMAE HE Centro Medico Nacional de Occidente Instituto Mexicano del Seguro Social, Guadalajara, Mexico, 4 Universidad de Guadalajara, Guadalajara, Jalisco, Mexico, 5 Delegación Jal...

Bacterial infections caused by multidrug resistant phenotypes constitute a worldwide health concern. The present study was designed to evaluate the in vitro antibacterial activities of the methanol extracts of five medicinal plants: Fagara macrophylla, Canarium schweinfurthii, Myrianthus arboreus, Dischistocalyx grandifolius and Tragia benthamii against a panel of 28 multidrug resistant Gram-ne...

Fractionation of an ethanol-soluble extract of the seeds of Swietenia macrophylla yielded six new limonoids, swielimonoids A-F (1-6), along with 20 known compounds. Compounds 1 and 2, mexicanolide-type limonoids, were assigned with an α,β-unsaturated δ-lactone moiety (ring D) and a C═C bond between C-8 and C-30. Compounds 3-6 could be categorized as highly oxygenated phragmalin-type limonoids. ...

Duas novas e duas conhecidas saponinas triterpênicas foram isoladas da casca do caule de Pentaclethra macroloba. As estruturas foram determinadas usando uma combinação de técnicas de RMN homo(1D: RMNH, RMNC-{H}, RMNC-DEPT135; 2D: H-H-COSY, H-HTOCSY, H-H-NOESY) and heteronuclear 2D (HMQC and HMBC), espectros de massas obtidos com ionização por pulverização eletrônica (ESIMS) e métodos químicos. ...

The yield of plantain (Musa spp., AAB Simmonds) declines sharply after 1–2 years of cropping in West and Central Africa, due mainly to weeds and nematodes. A trial was carried out from January 2002 to October 2005 under two landuse systems (LUS) comprising 4–5 year-old bush fallow, dominated by Chromolaena odorata (L.) R. M. King & H. Rob, and a 20 year-old secondary forest, in three villages i...