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Sialyl transferase in human semen.

R Singer1, H Levinsky, M Sagiv

  • 1Male Fertility Laboratory, Beilinson Medical Center, Petah Tikva, Israel.

Archives of Andrology
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Sialyl transferase enzyme activity in human seminal plasma shows a trend of decreasing with lower sperm counts. Enzyme activity was significantly lower in the first fraction of split semen compared to the second.

Area of Science:

  • Biochemistry
  • Reproductive Biology
  • Enzymology

Background:

  • Sialyl transferase is crucial for sialic acid transfer.
  • Semen quality parameters, including sperm count, are vital for male fertility.
  • Understanding enzyme activity in seminal plasma may offer insights into reproductive health.

Purpose of the Study:

  • To investigate sialyl transferase activity in human seminal plasma across different semen quality groups.
  • To analyze sialyl transferase activity in fractionated (split) semen.

Main Methods:

  • Enzyme activity was measured using radioactivity incorporation of 14C sialic acid into asialofetuin.
  • Activity was quantified as counts per minute (cpm) per volume and per milligram of protein.
  • Semen samples were categorized by sperm count (high, low, and azoospermic) and analyzed in fractions.

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Main Results:

  • A tendency for decreased sialyl transferase activity was observed with lower sperm density, though not statistically significant.
  • Enzyme activity in split semen was significantly lower in the initial fraction compared to the subsequent fraction.

Conclusions:

  • Sialyl transferase activity may be associated with sperm density, warranting further investigation.
  • Fractionation of semen reveals differential distribution of sialyl transferase activity, suggesting localized roles within the seminal fluid.