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Vol. 59. Issue 8.
Pages 377-383 (January 2008)
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Vol. 59. Issue 8.
Pages 377-383 (January 2008)
Ultra-Structural Study of the Lateral Portion of the Auditory Sensorial Organ Using a Decalcification-Free Method
Estudio ultraestructural de la porción lateral del órgano sensorial auditivo mediante un método sin descalcificación
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Iván Méndez-Benegassi
Corresponding author
ibenegassi@hotmail.com

Correspondence: Grupo de Investigación Otológica. Servicio de Otorrinolaringología. Hospital Universitario Puerta de Hierro. San Martín de Porres, 4. 28035 Madrid. España.
, Almudena Trinidad, José Ramón García-Berrocal, Cristina Martín, Rodrigo Martínez-Monedero, José María Verdaguer, Rafael Ramírez-Camacho
Grupo de Investigación Otológica, Servicio de Otorrinolaringología, Hospital Universitario Puerta de Hierro, Universidad Autónoma de Madrid, Madrid, Spain
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Objective

To explain the development of a new personal technique to study the spiral ligament and stria vascularis in Guinea pig cochleae by obtaining sample tissue without decalcification and to assess its validity for electron microscopy analysis.

Material and method

Samples were taken from 5 female Guinea pigs weighing 200–250 g and were fixed in glutaraldehyde and paraformaldehyde for analysis of the spiral ligament and stria vascularis ultrastructure by transmission electron microscopy.

Results

All of the ultrastructure components in the spiral ligament and stria vascularis could be examined without the need for decalcification.

Conclusions

Our method to obtain and analyze samples of cochlea side wall is valid, easy and faster.

Key words:
Stria vascularis
Spiral ligament
Fibrocyte
Transmission electron microscopy
Ultrastructure
Inner ear
Objetivo

Explicar el desarrollo de una técnica personal de estudio de la estría vascular y ligamento espiral de la cóclea en cobaya mediante la obtención de la muestra sin necesidad de descalcificación y valorar su validez para su análisis con microscopio electrónico.

Material y método

Se obtuvieron muestras de 5 hembras de cobaya de 200–250 g que se fijaron con glutaraldehído y paraformaldehído, y se analizó la ultraestructura del ligamento espiral y la estría vascular obtenidos mediante microscopio electrónico de transmisión.

Resultados

Se pudo observar todos los componentes ultraestructurales del ligamento espiral y la estría vascular sin necesidad de descalcificar.

Conclusiones

Nuestro método de obtención de las muestras es una forma válida, sencilla y más rápida que otros métodos para la obtención y el estudio de la porción lateral de la cóclea.

Palabras clave:
Estría vascular
Ligamento espiral
Fibrocito
Microscopio electrónico de transmisión
Ultraestructura del oído interno

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