Abstract
Purpose: This study wax designed to examine changes in peripheral plasma substance-P and -K levels, their association with follicle-stimulating hormone and luteinizing hormone release in normal reproductive cycles in humans, and their correlation with plasma estradiol and progesterone.
Methods: Fourteen healthy, normally menstruating women underwent daily blood sampling (cycle day 4, 4–14 days) for measurement of estradiol, progesterone, luteinizing hormone, and follicle-stimulating hormone, substances-P and -K, and daily transvaginal ultrasounds assessing follicular growth and documentation of ovulation.
Results: Estradiol peaked on day 13, luteinizing hormone and follicle-stimulating hormone peaked on day 14, and progesterone began an exponential increase on about day 13.
Conclusions: In contrast to other experimental designs using in vitro or in vivo rat or monkey tissue, peripheral levels of substances-P (P = 0.8391) and -K (P = 0.3205) reflected no modulation related to midcycle gonadotropin release in cycling woman.
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Mohyi, D.L., Kerdelhué, B., Lenoir, V. et al. Plasma Substance-P and Substance-K and Gonadal Steroids in Relation to the Gonadotropin Surge in Normal Human Reproductive Cycles. J Assist Reprod Genet 15, 547–551 (1998). https://doi.org/10.1023/A:1022534204239
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DOI: https://doi.org/10.1023/A:1022534204239