ABSTRACT Natural steroids and triterpenes such as b-sitosterol, stigmasterol, lupeol, ursolic and betulinic acids were transformed into its hexanoic and oleic esters, to evaluate the influence of chemical modification towards the cytotoxic activities against tumor cells. The derivatives were evaluated ag...
Antineoplásicos/química,
Antineoplásicos/aislamiento & purificación,
Antineoplásicos/farmacología,
Línea Celular Tumoral,
Ensayos de Selección de Medicamentos Antitumorales,
Ésteres,
Fabaceae/química,
Fabaceae/clasificación,
Concentración 50 Inhibidora,
Lamiaceae/química,
Lamiaceae/clasificación,
Triterpenos Pentacíclicos/química,
Triterpenos Pentacíclicos/aislamiento & purificación,
Triterpenos Pentacíclicos/farmacología,
Triterpenos/química,
Triterpenos/aislamiento & purificación,
Triterpenos/farmacología
Este trabalho investigou as principais alterações clínicas e dermatopatológicas de equinos intoxicados natural e experimentalmente por Leucaena leucocephala. Os surtos ocorreram nos estados de São Paulo e Goiás, onde seis cavalos após a ingestão de casca e/ou folhas de L. leucocephala apresentara...
This study evaluated the antimicrobial activity and acute or chronic toxicity of the extract of Stryphnodendron adstringens. The stem bark dry extract was obtained by static maceration with ethanol. Quantification of tannins was performed by the Folin-Denis method, which indicated a total tannin content ...
Abstract Flood events in riparian forests of southern Brazil, can be characterized as unpredictable and of low magnitude with an average duration of less than 15 days. Inga marginata is an evergreen tree which grows in Southeast South America on a wide range of environments, including riparian forests. I...
Aclimatación,
Fabaceae/anatomía & histología,
Fabaceae/crecimiento & desarrollo,
Fabaceae/fisiología,
Inundaciones,
Luz,
Plantones/anatomía & histología,
Plantones/crecimiento & desarrollo,
Plantones/fisiología,
Solubilidad,
Azúcares/metabolismo
Abstract The establishment and maintenance of plant species in the Chaco, one of the widest continuous areas of forests in the South American with sharp climatic variations, are possibly related to biological features favoring plants with particular defenses. This study assesses the physical and chemical...
Abstract Plants respond to wounding caused by mechanical stress or herbivory by synthesizing defense proteins. There are no studies reporting the action of induced plant proteins against ticks. The aim of this study was to investigate the effect of mechanically wounded Leucaena leucocephala leaves agains...
ABSTRACT BACKGROUND Given the increase of people with gastrointestinal disorders, the search for alternative treatments with fewer side effects is vital, as well as the demand for food or plants that can help protect the stomach. OBJECTIVE The aim of this study was to evaluate the gastroprotective ac...
Modelos Animales de Enfermedad,
Etanol,
Fabaceae/química,
Fabaceae/clasificación,
Frutas/química,
Frutas/clasificación,
Mucosa Gástrica/efectos de los fármacos,
Indometacina,
Myrtaceae/química,
Myrtaceae/clasificación,
Extractos Vegetales/farmacología,
Sustancias Protectoras/farmacología,
Úlcera Gástrica/inducido químicamente,
Úlcera Gástrica/prevención & control
Esse estudo teve por objetivo avaliar o potencial de transmissibilidade ultrassônica de um gel fitoterápico de copaíba da espécie Copaifera duckei Dwyer na concentração de 10%. A pesquisa foi registrada junto ao Sistema Brasileiro de Biodiversidade. O gel fitoterápico de Copaifera duckei 10% foi m...
Abstract A new species of gall midge that induces stem galls on Aeschynomene denticulata (Fabaceae) is described based on material collected in Pantanal (Mato Grosso do Sul, Brazil). This species is unique among the Brazilian congeners in having spatula with three convex teeth, cruciate, with defined ant...
Abstract Due to land use change mainly for induced agriculture, Tamaulipan thornscrubin northeast Mexico has been cleared and transformed into small patches of vegetation as small as isolated trees surrounded by agricultural fields. In this study, we explored how tree isolation or growing inside a fragme...
