The testicular descent in the rat: a scanning electron microscopic study.
Pediatr Surg Int
; 26(6): 643-7, 2010 Jun.
Article
em En
| MEDLINE
| ID: mdl-20411265
ABSTRACT
PURPOSE:
Numerous researchers studied the morphology of testicular descent including the possible function of gubernaculum. However, a clear illustration of this process is still missing. The aim of this study was to illustrate testicular descent using scanning electron microscopy (SEM) in a rat model.METHODS:
The abdomen of rat fetuses between gestational day (E) 15 and E 22 and newborns at postnatal day (D) 0 and D 1.5 was opened by microsurgery. Standard preparation for SEM was carried out. The position of the testis and gubernaculum testis was documented.RESULTS:
The gubernaculum was obvious in male rat embryos at E 17.5. In a first phase (E 16-E 21) the testis moved from cranio-lateral and dorsal to caudo-medial and ventral, while clear signs of an active role of the gubernaculum were missing. In a second phase (E 22-D 1.5) the processus vaginalis peritonei (PVP) developed, while the conus of the gubernaculum disappeared, after which, the testis moved out of the abdominal cavity and entered the PVP.CONCLUSION:
In our study, we could not specify the role of gubernaculum for testicular descent. However, our data showed that the testis lay intraperitoneal throughout the descensus testis.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Testículo
/
Microscopia Eletrônica de Varredura
Limite:
Animals
Idioma:
En
Revista:
Pediatr Surg Int
Assunto da revista:
PEDIATRIA
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Alemanha