EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Ultrastructural changes of testicular interstitial cells of silver japanese eels anguilla japonica treated with human chorionic gonadotropin


Bulletin of the Faculty of Fisheries Hokkaido University 30(1): 23-33
Ultrastructural changes of testicular interstitial cells of silver japanese eels anguilla japonica treated with human chorionic gonadotropin
Testicular interstitial cells of silver males of the Japanese eel, A. japonica, are present as prominent clusters of several cells in the interlobular spaces. They are characterized ultrastructurally by having relatively evident cytoplasmic organelles such as a poorly developed smooth endoplasmic reticulum, mitochondria with lamellar cristae, a large amount of free ribosomes and an ill-developed Golgi complex. Administrations of human chorionic gonadotropin (hCG) to the immature silver males could induce a rapid occurrence of spermatogenesis resulting in a complete maturation of testes. The treatment caused simultaneous changes in the ultrastructure of testicular interstitial cells. Mitochondria, which showed a considerable increase both in size and in number, underwent conspicuous elongation and became provided with a large number of tubular cristae. Smooth endplasmic reticulum with tubular and vesicular cisternae was increased in amount gradually as hCG injections were repeated. Numerous free ribosomes came to be scattered in rosettes throughout the cytoplasm, and the Golgi complex appeared to be increased in size and complexity in the hCG-stimulated interstitial cells. Testicular interstitial cells of silver males of the Japanese eel are apparently responsive to hCG to develop their steroidogenic function.


Accession: 006857434



Related references

Ultrastructural changes of testicular interstitial cells of silver Japonese eels, Anguilla japonica, treated with human chorionic gonadotropin. Bulletin of the Faculty of Fisheries Hokkaido University, 301: 23-33, 1981

Milt production in the Japanese eel Anguilla japonica induced by repeated injections of human chorionic gonadotropin. Fisheries Science (tokyo). 62(1): 44-49, 1996

Induction of spermatogenesis in male japanese eel anguilla japonica by a single injection of human chorionic gonadotropin. Zoological Science (Tokyo) 8(1): 63-74, 1991

Human chorionic gonadotropin induces all stages of spermatogenesis in vitro in the male Japanese eel (Anguilla japonica). Developmental Biology 146(1): 258-262, 1991

A rapid activation of immature testis of Japanese eel (Anguilla japonica) by a single injection of human chorionic gonadotropin. Journal of Biosciences 20(5): 675-689, 1995

Expression and localization of eel testicular ZP-homologues in female Japanese eels (Anguilla japonica). Zoological Science 17(9): 1297-1302, 2000

Activation of immature testes of Japanese eel, Anguilla japonica, by a single injection of human chorionic gonadotropin: a light microscopical study. Current and emerging trends in aquaculture: proceedings of the national seminar, 14-16 February 1995: 218-224, 1998

Relationship between serum levels of human chorionic gonadotropin (hCG) and 11-ketotestosterone after a single injection of hCG and induced maturity in the male Japanese eel, Anguilla japonica. Aquaculture 153(1/2): 123-134, 1997

Primary cultures of dispersed pituitary cells from estradiol-pretreated female silver eels (Anguilla anguilla L.): immunocytochemical characterization of gonadotropic cells and stimulation of gonadotropin release. General and Comparative Endocrinology 104(1): 103-115, 1996

Is deglycosylated human chorionic gonadotropin an antagonist to human chorionic gonadotropin? Characterization of deglycosylated human chorionic gonadotropin action in two testicular interstitial cell fractions. Biochimica et Biophysica Acta 1033(3): 226-234, 1990