Changes

Jump to navigation Jump to search
469 bytes added ,  16:02, 13 July 2011
Line 15: Line 15:  
Leydig cells produce testosterone using cholesterol as a base molecule. Leydig cells contain various enzymes such as 18-hydroxylase that facilitate the production of steroid hormones. In some species such as pigs, the testes also produce '''androstenone''' which acts as a pheromone and is secreted via the saliva, often producing a copulatory position from sows in oestrous. Androstenone is also responsible for bore taint.  
 
Leydig cells produce testosterone using cholesterol as a base molecule. Leydig cells contain various enzymes such as 18-hydroxylase that facilitate the production of steroid hormones. In some species such as pigs, the testes also produce '''androstenone''' which acts as a pheromone and is secreted via the saliva, often producing a copulatory position from sows in oestrous. Androstenone is also responsible for bore taint.  
 
===Regulation of Male Sex Hormones===
 
===Regulation of Male Sex Hormones===
 +
When LH binds to the Leydig cells, it stimulates the cellular messenger '''cAMP''' to '''activate protein kinase A'''. Protein kinase A undergoes a series of phosphorylations that in turn activate a series of enzymes that synthesis testosterone from the cholesterol base molecule. A portion of the testosterone produced in the Leydig cells diffuses into the Sertoli cells that are positioned adjacent to the Leydig cells in the testes but seperated by a basal lamina.
 +
 
===Effects of Male Sex Hormones===
 
===Effects of Male Sex Hormones===
  
6,273

edits

Navigation menu