Effect of hCG injection on prostaglandin E concentrations in ram seminal plasma

Laurence Shore, Ronen Yehuda, Shmuel Marcus, Benyamin Bartoov, Mordechai Shemesh

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Ram and bull seminal plasma, respectively, contain 0.5-20μgPGE/ml and 5-10ngPGE/ml. To demonstrate that PGE concentrations in the seminal plasma are related to sperm quality and could be affected by hormonal stimulation in vivo, four rams were injected with 500IU hCG, in and out of season. The rams responded 1 week after hCG with a 1.5- to 4-fold increase in seminal plasma PGE. The PGE peak was temporally separate from the hCG-induced rise in seminal plasma testosterone which was observed after 1 day. Using a simulated cryptochid ram, peaks in seminal fluid PGE were found to be associated with increased sperm velocity and sperm counts. In bulls, PGE concentrations in the seminal plasma of good bulls were significantly higher than that found in poor and cryptorchid bulls.

Original languageEnglish
Pages (from-to)291-301
Number of pages11
JournalProstaglandins and Other Lipid Mediators
Volume70
Issue number3-4
DOIs
StatePublished - Jan 2003

Keywords

  • Bull
  • Cryptorchid
  • Ram
  • Seminal plasma

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