SciELO - Scientific Electronic Library Online

 
vol.31 número3Resultados de la Cirugía Laparoscópica en Quistes Hepáticos No ParasitariosEstudio Comparativo entre Dos Intensidades de Ultrasonido Continuo en la Reparación del Nervio Espinal Lesionado por Compresión índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

DIAZ MURILLO, H  y  PEDEMONTE CAMPOS, C. Emerging Melanin Protective Pigment in the Brain of Xenopus laevis to Protect from the Effects of UV Radiation. Int. J. Morphol. [online]. 2013, vol.31, n.3, pp.1120-1123. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022013000300055.

It has been observed that certain amphibians have developed pigmentation in brain as a possible increased protection against UV radiation, caused by damage to the ozone layer, which would alter the ecosystem. In this paper we describe the presence of pigment in the brain of X. laevis during larval development and possible protective function against UV radiation. To do this, we collected individuals at various larval stages, which were obtained from different locations in Valparaiso (V Region, Chile ), to be processed with HE and the method of Lillie. In the analysis it was evident that pigmentation corresponded to melanin, which would be in the membrane called leptomeninges, which covers the brain and would be acting as a protective filter to prevent damage to the level of development in the nervous system of these frogs. In addition, UV rays would be deleterious agents stimulating production of eumelanin in the leptomeninges of these amphibians, to protect the CNS (brain), and the individual itself of potential teratogenic or mutagenic alterations.

Palabras clave : Melanin; Ultraviolet radiation; Xenopus laevis.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons