用灵长类动物进行的研究提示垂体门脉血浆中的β-内啡肽水平受到性激素的影响.点滴纳洛酮(一种鸦片受体的拮抗剂)以后的血清LH反应已被用作为一种研究内源性鸦片样肽活性的方法,已证明此种LH反应与垂体门脉血浆中的β-内啡肽水平有关.外周血中β-内啡肽的水平看来并不能反映 Studies using primates suggest that beta-endorphin levels in the plasma of the pituitary portal are affected by sex hormones Serum LH responses after naloxone, an antagonist of the opioid receptor, have been used as a This method of studying the activity of endogenous opioid peptides has shown that this LH response is related to the level of [beta] -endorphin in the plasma of the pituitary gland and the level of [beta] -endorphin in peripheral blood does not appear to reflect