SciELO - Scientific Electronic Library Online

 
vol.28 número2Estudio Anatómico de los Puentes Óseos y Forámenes Pterigoespinoso y Pterigoalar en Cráneos Secos y su Relevancia ClínicaDiferencias en el Crecimiento Corporal entre Futbolistas y Jugadores de Baloncesto Jóvenes 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

OGENG'O, Julius; MALEK, Adel Abdel  y  KIAMA, Stephen. Interlinkages in the Tunica Media of Goat Aorta. Int. J. Morphol. [online]. 2010, vol.28, n.2, pp.409-414. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000200013.

The arrangement and interconnections between various components of the aortic wall influence its physicomechanical properties and functional alterations that occur in disease and ageing. The goat is a suitable model for studying cardiovascular disease, but details of the intrinsic organization of its aorta are unknown. This study therefore investigated the histomorphology of aortic tunica media in the goat by transmission electron microscopy. Sixteen healthy juvenile and adult domestic male goats (capra hircus) purchased from livestock farms in the outskirts of Nairobi were used in the study. The animals were euthanized with overdose of sodium pentabarbitone 20mg/kg, and fixed with 3% phosphate buffered glutaraldehyde solution by gravimetric perfusion. Specimens obtained from the thoracic aorta (T9) were post fixed in osmium tetroxide, and prepared for durcupan embedding. Ultrathin sections stained with uranyl acetate/lead citrate were examined by EM 201 Phillips © electron microscope. Elastic and collagen fibres were structurally interconnected. Elastic lamellae, collagen and elastic fibres were linked to smooth muscle cells through areas of high electron density while smooth muscle cells were interconnected various inter cellular connections. The physical interlinkages between the components of the tunica media confer plasticity, adaptability and flexibility to the aortic wall enabling it to function as a mechanically homogenous structure. Disruptions of this structure in atherosclerosis and aging may disturb the vascular integrity and predispose to aneurysm formation.

Palabras clave : Matrix; Smooth muscle; Interlinkage; Aorta; Goat.

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

 

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