Expression and localization of delta-, kappa-, and mu-opioid receptors in human spermatozoa and implications for sperm motility.

@article{Agirregoitia2006ExpressionAL,
  title={Expression and localization of delta-, kappa-, and mu-opioid receptors in human spermatozoa and implications for sperm motility.},
  author={Ekaitz Agirregoitia and Asier Valdivia and Arkaitz Carracedo and Luis Casis and Javier Gil and Nerea Subir{\'a}n and Carmen Ochoa and Jon Irazusta},
  journal={The Journal of clinical endocrinology and metabolism},
  year={2006},
  volume={91 12},
  pages={4969-75}
}
CONTEXT Endogenous opioid peptides signal through delta-, kappa-, and mu-opioid receptors. Some of these peptides such as endorphins and enkephalins are present in the male reproductive tract, but the presence of the corresponding receptors in human sperm cells has not yet been reported. OBJECTIVE Our objective was to study the expression and localization of delta-, kappa-, and mu-opioid receptors on human spermatozoa and the implication in sperm motility. METHODS The expression of… CONTINUE READING