Document Detail


An endocrine and histophysiological study of the testicular annual cycle in the hedgehog (Erinaceus europaeus L.).
MedLine Citation:
PMID:  6862179     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The histophysiology of the testis was studied all year round in adult male hedgehogs living in middle-western France. Variations in Leydig and Sertoli cell populations were correlated to plasma testosterone levels and compared to variations in seminiferous tubule diameter and germ cell production. During the last part of the hibernating period, in winter, Leydig cell parameters and plasma testosterone levels increased and reached maximum values in February, 1 month before the maximum development of seminiferous epithelium. The numerous large-sized Leydig cells in spring and summer corresponded to the maximum levels of plasma testosterone and maximum development of seminiferous tubules, spermatogenesis, and Sertoli cells. Regression occurred in August for Leydig cells and plasma testosterone levels, in September for seminiferous tubules and spermatogenesis. All the gonadal functions remained depressed from September to November. The relative frequency of the stages and duration of the seminiferous epithelium cycle were also studied. The same duration (10 days) was observed in hibernating animals in winter and active animals in spring.
Authors:
B Dutourné; M Saboureau
Related Documents :
2829579 - Demonstration of hcg binding sites and hcg stimulated steroidogenesis in different popu...
19517569 - Developmentally regulated smad2 and smad3 utilization directs activin signaling outcomes.
7193569 - Peritubular cell influence on the efficiency of androgen-binding protein secretion by s...
2416699 - Ultrastructural changes in sertoli cells in ageing humans.
18281069 - Rapid mechanisms of glucocorticoid signaling in the leydig cell.
8070619 - Differential distribution of the alpha 6 subunit of integrins in the development and se...
3535529 - Morphologic evaluation of the effects of shiga toxin and e coli shiga-like toxin on the...
2027529 - Diacylglycerol formation and dna synthesis in endothelin-stimulated rat c6 glioma cells...
7768559 - Influence of intracellular renin on heart cell communication.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  General and comparative endocrinology     Volume:  50     ISSN:  0016-6480     ISO Abbreviation:  Gen. Comp. Endocrinol.     Publication Date:  1983 May 
Date Detail:
Created Date:  1983-08-17     Completed Date:  1983-08-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370735     Medline TA:  Gen Comp Endocrinol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  324-32     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Epithelial Cells
Hedgehogs / physiology*
Male
Periodicity*
Seasons*
Seminiferous Tubules / anatomy & histology
Sertoli Cells / cytology
Spermatogenesis
Testis / anatomy & histology,  physiology*
Testosterone / blood
Chemical
Reg. No./Substance:
58-22-0/Testosterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Seasonal variations of serotonin content in the pineal complex and the lateral eye of Lampetra plane...
Next Document:  The development and integration of fine motor sequences in 12- to 18-month-old children: a test of t...