Shift of glycolysis as a marker of sperm maturation

The presence of glycogen-phosphorylase (A and B forms), glucose-6-phosphatase and fructose-1, 6-diphosphatase in bonnet monkey spermatozoa was determined. The process of glycolysis gradually decreased and the process of reversal of glycolysis steadily increased in monkey spermatozoa as they move from testis to caput to corpus to cauda to vas deferens and finally in ejaculate. Hence in bonnet monkeys, the functional maturity of spermatozoa and the shift in glycolysis are closely related.