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Smoking effects on the hormonal balance of fertile women

Hormone Research, ISSN: 0301-0163, Vol: 37, Issue: 1-2, Page: 45-48
1992
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Article Description

We evaluated serum pituitary hormones (prolactin, follicle-stimulating hormone, luteinizing hormone), gonadal hormones (estrone, estradiol, progesterone), sex steroid binding protein (SBP) and urine estrogens in 684 healthy fertile women, subdivided into smokers (n = 237) and nonsmokers (n = 447). The aim of the work was to elucidate whether smoking habits can affect hormonal balance. Smoking interference of estrogen metabolism has been postulated, but no unequivocal data have been reported. A protective role against breast cancer has even been suggested on the basis of a reduced estrogenic activity found in smokers. Our data showed a considerable interference of smoking on PRL secretion, probably related to a direct inhibiting activity of nicotine. Estrogen catabolism could also be involved, and a catabolic shift of 16α-hydroxylation in favour of 2α-hydroxylated catabolites, via the hepatic cytochrome P-450 system could be hypothesized.

Bibliographic Details

Laura Berta; Roberto Frairia; Nicoletta Fortunati; Annamaria Fazzari; Gianpiero Gaidano

S. Karger AG

Medicine; Biochemistry, Genetics and Molecular Biology

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