Brain opioid receptor measurements by positron emission tomography in normal cycling women: relationship to luteinizing hormone pulsatility and gonadal steroid hormones.

@article{Smith1998BrainOR,
  title={Brain opioid receptor measurements by positron emission tomography in normal cycling women: relationship to luteinizing hormone pulsatility and gonadal steroid hormones.},
  author={Y R Smith and J K Zubieta and Marcela Guadalupe del Carmen and Robert F. Dannals and Hayden T. Ravert and Howard A. Zacur and James Frost},
  journal={The Journal of clinical endocrinology and metabolism},
  year={1998},
  volume={83 12},
  pages={4498-505}
}
The regulation of central mu-opioid receptors in women during the menstrual cycle was explored with positron emission tomography and the selective radiotracer [11C]carfentanil. Ten healthy women were studied twice, during their follicular and luteal phases. Plasma concentrations of estradiol, progesterone, testosterone, and beta-endorphin were determined immediately before scanning. LH pulsatility was measured over the 9 h preceding each of the two positron emission tomography scans. No… CONTINUE READING

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