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Vol. 58. Issue 1.
Pages 4-6 (January 2007)
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Vol. 58. Issue 1.
Pages 4-6 (January 2007)
Basic Investigation
Connections Between Bone Marrow and Mesenchyme of the Middle Ear
Conexiones entre la médula ósea de los osículos y el mesénquima del oído medio
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Jaime Rafael Whyte Orozcoa,
Corresponding author
jwhyte@unizar.es

Correspondence: Departamento de Anatomía e Histología Humanas. Facultad de Medicina. Universidad de Zaragoza. Domingo Miral, s/n. 50009 Zaragoza. España.
, Ana Isabel Cisneros Gimenoa, Raúl Pérez Sanzb, Carmen Yus Gotorc, José Francisco Gañet Soléd, Marco Antonio Sarrat Torresa
a Departamento de Anatomía e Histología Humanas, Universidad de Zaragoza, Zaragoza, Spain
b Departamento de Fisiatría y Enfermería, Universidad de Zaragoza, Zaragoza, Spain
c Servicio de Anatomía Patológica, Hospital Miguel Servet, Zaragoza, Spain
d Departamento de Cirugía, Universidad de Zaragoza, Zaragoza, Spain
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Objective

To investigate the presence of connections between the bone marrow of the ossicles and the mesenchyme that fills the future tympanic cavity.

Material and methods

Ninety temporal bones from embryos and foetuses were examined, selecting 15 aged between 20th to 30th weeks of development, to show connections between ossicle marrow and mesenchyme.

Results

The connections are transitory and appear in the malleus and the incus between 20th to 24th weeks of development, while in the stapes appear later, being between 24th to 28th weeks.

Conclusions

These connections may have an important role in the phagocytosis of the mesenchymal remains and join in the detritus elimination mechanisms produced during the regression.

Key words:
Tympanic ossicles
Connections
Marrowmesenchye
Objetivo

Determinar si existen conexiones entre la médula ósea de los osículos timpánicos y el mesénquima que rellena la futura cavidad timpánica.

Material y métodos

Se han examinado 90 huesos temporales pertenecientes a embriones y fetos, y se han seleccionado 15 de edades comprendidas entre las semanas 20 y 30 del desarrollo al presentar conexiones entre médula del osículo y el mesénquima.

Resultados

Las conexiones son de tipo transitorio y aparecen en el martillo y el yunque entre las semanas 20 y 24 de desarrollo, mientras que en el estribo se manifiestan posteriormente, entre las semanas 24 y 28.

Conclusiones

Estas conexiones pueden tener un papel importante en la fagocitosis de los restos mesenquimales y sumarse a los mecanismos de eliminación de los detritus producidos durante la regresión.

Palabras clave:
Osículos timpánicos
Conexiones
Médulamesénquima

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