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  • Title: Changes in plasma catecholamines and pulsatile patterns of gonadotropin release in subjects with a normal ovulatory cycle and with polycystic ovary syndrome.
    Author: Yoshino K, Takahashi K, Shirai T, Nishigaki A, Araki Y, Kitao M.
    Journal: Int J Fertil; 1990; 35(1):34-9. PubMed ID: 1968442.
    Abstract:
    Plasma LH levels in women and female laboratory animals fluctuate. Since catecholamines play a role in gonadotropin secretion, we investigated the possible correlation between catecholamine metabolites and pulsatile patterns of gonadotropin release by measuring two catecholamine metabolites, MHPG and DOPAC. LH levels had a pulsatile pattern, and the levels of MHPG fluctuated. The average of LH and MHPG in polycystic ovary syndrome was significantly higher than that of a normal ovulatory cycle, and the average fluctuation of LH and MHPG in polycystic ovary syndrome was also significantly greater than that in a normal ovulatory cycle. There may be a correlation between the pulsatile pattern of gonadotropin and catecholamine activity, particularly adrenergic activity. It is suspected that adrenergic activity may correlate with the pulsatile pattern in polycystic ovary syndrome.
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