Results: 15

Hymenaea rubriflora Ducke stem bark extract has vasorelaxant and contractile inhibition capacity

Abstract We investigated the vasodilatory effects of Hymenaea rubriflora Ducke stem bark extract (HRHAc). Vascular reactivity of the aortic rings of Wistar rats was tested by in vitro cumulative doses (0.1 - 729 μg/mL). Rats (n=5) were treated with 25 (G25), 50 (G50) and 100 (G100) mg/ kg of HR-HAc or s...

Caracterização de cubossomos não-iônicos em presença de proteínas modelo: uma abordagem estrutural e funcional

Uma área de pesquisa que vem ganhando muita atenção nos últimos anos é a nanome­dicina, com especial atenção para os sistemas com entrega controlada de fármacos, ou drug delivery. Dentre as diversas nanopartículas utilizadas para este fim, destacam-se os sistemas formados por lipídeos e polím...

Tetradenia riparia leaves, flower buds, and stem essential oils to control of Aedes aegypti larvae

Abstract Tetradenia riparia (Hochst.) Codd (Lamiaceae) is a species native to the African continent and used as an insect repellent. The objective of the study was to evaluate the larvicidal potential of essential oils (EOs) from the leaves, flower buds, and stem of T. riparia, collected in winter agains...

Essential Oil from the Stem Bark of Casuarina equisetifolia Exerts Anti-inflammatory and Anti-nociceptive Activities in Rats

Abstract Herein the chemical constituents and the anti-pain properties of the essential oil from the stem bark of Casuarina equisetifolia L. (Casuarinaceae) grown in Nigeria were evaluated. The essential oil was obtained by hydrodistillation method in an all glass Clevenger-type apparatus, and characteri...

Evaluación preliminar de la actividad de Ageratina havanensis contra virus dengue 2
Preliminary evaluation of the activity of Ageratina havanensis against the dengue 2 virus

Rev. cuba. med. trop; 73 (1), 2021
. Introducción: El dengue es la enfermedad viral transmitida por mosquitos de más rápida propagación en el mundo. A pesar de la alta incidencia de la enfermedad no existe tratamiento antiviral efectivo ni vacuna aprobada para su uso contra esta infección. La planta Ageratina havanensis ha sido ampl...

Trasplante de progenitores hematopoyéticos alogénico haploidéntico en aplasia medular, reporte del primer caso en Cuba
Allogenic hematopoietic stem-cell transplantation in marrow aplasia: the first case report in cuba

Introducción: La aplasia medular adquirida grave es una enfermedad hematológica infrecuente caracterizada por una disminución o ausencia de precursores hematopoyéticos en la médula ósea, lo cual se expresa con distintos grados de citopenias. Varios factores, infecciosos o no, pueden incidir en su ...

Phytochemical and morpho-anatomical study of the vegetative organs of Psychotria fractistipula L. B.Sm., R.M. Klein & Delprete (Rubiaceae)

Psychotria fractistipula L.B.Sm, R.M. Klein & Delprete (Rubiaceae) is found in the existing Atlantic Forest in the South of Brazil, in the Paraná and Santa Catarina States. The members of Rubiaceae are characterized chemically by the presence of alkaloids, some pharmacological properties of which in...

Agrobacterium rhizogenes-mediated transformation of Hypericum sinaicum L. for the development of hairy roots containing hypericin

Hypericum sinaicum L. is an endangered Egyptian medicinal plant of high importance due to the presence of naphthodianthrones (hypericins), which have photodynamic properties and pharmaceutical potential. We sought to assess H. sinaicum ability to develop hairy roots that could be cultured in contained co...

Avaliação de protetores solares contendo filtros encapsulados/incorporados em matriz de sílica mesoporosa ordenada do tipo SBA-15

Filtros orgânicos são amplamente utilizados em formulações fotoprotetoras, com habilidade de absorver radiações ultravioleta (UV). Contudo, parte destes compostos possuem limitações, como: fotoinstabilidade, permeação cutânea e fotossensibilização e entre outros. Este trabalho envolveu a sí...

RNA viruses in trypanosomatid parasites: a historical overview

Mem. Inst. Oswaldo Cruz; 113 (4), 2018
Viruses of trypanosomatids are now being extensively studied because of their diversity and the roles they play in flagellates' biology. Among the most prominent examples are leishmaniaviruses implicated in pathogenesis of Leishmania parasites. Here, we present a historical overview of this field, starti...