The Enzyme Activity, Protein and Fructose Content of Normal, Oligospermic, Postvasectomy, and Infertile Azoospermic Men *

Use of vasectomy led to interest in the possible immunologic of biochemical changes in postvasectomized semen. A study of 66 ejaculates was made. After routine semen analysis leucine aminopeptidase and aspartate aminotransferase were correlated with sperm court. Semen may vary and the activity of some enzymes and motility are related to sperm concentration. No differences in protein fructose isocitric dehydrogenase or alanine aminotransferase were found. The significant difference in the amount of enzymatic activity of LAP was higher in the normal specimens decreased in the semen of oligospermic males and the postvasectomy semen and was least in the infertile group.