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Titolo:
THE TAMMAR WALLABY (MACROPUS-EUGENII AND THE SPRAGUE-DAWLEY RAT - COMPARATIVE ANATOMY AND PHYSIOLOGY OF INGUINOSCROTAL TESTICULAR DESCENT
Autore:
GRIFFITHS AL; RENFREE MB; SHAW G; WATTS LM; HUTSON JM;
Indirizzi:
ROYAL CHILDRENS HOSP,DEPT GEN SURG,FLEMINGTON RD PARKVILLE VIC 3052 AUSTRALIA UNIV MELBOURNE,ROYAL CHILDRENS HOSP,RES FDN,SURG RES LAB MELBOURNE VIC AUSTRALIA UNIV MELBOURNE,DEPT ZOOL MELBOURNE VIC AUSTRALIA
Titolo Testata:
Journal of Anatomy
, volume: 183, anno: 1993,
parte:, 3
pagine: 441 - 450
SICI:
0021-8782(1993)183:<441:TTW(AT>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEXUAL-DIFFERENTIATION; GENITOFEMORAL NERVE; HORMONAL-CONTROL; POUCH YOUNG; GUBERNACULUM; LOCALIZATION; MIGRATION; TESTIS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
A.L. Griffiths et al., "THE TAMMAR WALLABY (MACROPUS-EUGENII AND THE SPRAGUE-DAWLEY RAT - COMPARATIVE ANATOMY AND PHYSIOLOGY OF INGUINOSCROTAL TESTICULAR DESCENT", Journal of Anatomy, 183, 1993, pp. 441-450

Abstract

Inguinoscrotal testicular descent in the tammar wallaby (Macropus eugenii) and the Sprague-Dawley rat was studied by macroscopic dissection, histological evaluation and organ culture bioassay. In 3 or 4 d Sprague-Dawley rats (n = 10) the gubernacular tip bulged free from the surrounding tissues, particularly with the application of abdominal pressure. Microscopic examination revealed that only the body of the gubernaculum is connected posteriorly to the pubic region. In contrast, macroscopic dissection of male tammar wallabies (n = 17) revealed a densely adherent distal gubernacular attachment to the inside of the fibrousscrotal bulge while the body of the gubernaculum was less firmly attached. These attachments were present throughout the process of testicular descent, illustrating an important anatomical difference between these species. The gubernaculum from the tammar wallaby pouch young wasstudied in organ culture with rat calcitonin gene-related peptide for4 d. Rhythmic gubernacular contractions similar to those documented previously in the rat were not observed. The hypothesis proposed in therat for the control of inguinoscrotal gubernacular migration via the genitofemoral nerve and its neurotransmitters may not be applicable inmarsupial mammals.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 21:47:48