Centella asiatica (L.) Urb. is one of the important medicinal and nutraceutical herbs being used by ethnic people since prehistoric times. It accumulates large amount of pentacyclic triterpenoid saponins which forms the major store house of secondary metabolites providing active compounds stimulating cell rejuvenation, improving physical and mental health. C. asiatica also serves dietetic purpo...

O presente trabalho descreve a elucidação estrutural de uma nova β-lapachona tipo naftoquinona, isolada a partir das raízes de Distictella elongata. A nova substância, apresentando fórmula molecular C 16 H 16 O 6 , foi identificada como sendo 4,7-diidróxi-10-metóxi-2,2-dimetil3,4-diidro-2H-benzo[h]cromeno-5,6-diona, de acordo com os dados obtidos por meio de análises espectrométricas. A elucida...

Urban areas cause a set of environmental challenges, which come from the consumption of natural resources and the generation of waste and pollution. These aspects contribute to the development of social and economic imbalance, which continues to grow while demanding new solutions. Therefore urban planning and architecture needs a new and flexible approach, introducing methods and techniques whi...

The lens plays an important role in eye development. To investigate the molecular mechanisms involved, we used signal sequence trap screens with a chicken lens cDNA library and identified a novel secreted molecule, equarin. Equarin encodes consensus repeat domains conserved in human SRPX and mouse Urb. In the embryonic eye, equarin transcript is detected exclusively in the lens, and persists in...

www.sciencemag.org (this information is current as of November 12, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/300/5619/597 version of this article at: including high-resolution figures, can be found in the online Updated information and services, found at: can be related to this article A list of selected additional...