Annual patterns of luteinizing hormone, follicle stimulating hormone, testosterone and inhibin in normal men

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Annual patterns of luteinizing hormone, follicle stimulating hormone, testosterone and inhibin in normal men

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dc.contributor.author Bremner, William J. en_US
dc.contributor.author Paulsen, C. Alvin en_US
dc.contributor.author Meriggiola, M. Cristina en_US
dc.contributor.author Noonan, Elizabeth A. en_US
dc.date.accessioned 2008-10-17T20:43:00Z
dc.date.available 2008-10-17T20:43:00Z
dc.date.issued 1996-02 en_US
dc.identifier.citation Hum Reprod. 1996 Feb;11(2):248-52 en_US
dc.identifier.uri http://hdl.handle.net/1773/4452
dc.description.abstract Reproductive functions in most animals demonstrate seasonal fluctuations that allow young to be born at a time of the year favourable for their survival. Whether there is a seasonal change in the human reproductive system is unclear. In the present study, we measured serum concentrations of luteinizing hormone, follicle stimulating hormone, testosterone and inhibin in the same 16 normal men sampled monthly for 1 year. A statistically significant increase in all four measured hormones was found in June, with a nadir in August. Our findings suggest that a circannual rhythm of gonadotrophins and testicular hormones exists in normal men. The mechanism leading to this rhythm and the importance of the rhythm in human biology are unknown. en_US
dc.language.iso en_US en_US
dc.publisher Oxford University Press en_US
dc.subject circannual en_US
dc.subject hormones en_US
dc.subject reproductive function en_US
dc.subject.mesh Research Support, U.S. Gov't, Non-P.H.S. en_US
dc.subject.mesh Research Support, Non-U.S. Gov't en_US
dc.subject.mesh Sex Characteristics en_US
dc.subject.mesh Seasons en_US
dc.subject.mesh Follicle Stimulating Hormone, blood en_US
dc.subject.mesh Adult en_US
dc.subject.mesh Male en_US
dc.subject.mesh Humans en_US
dc.subject.mesh Testosterone, blood en_US
dc.subject.mesh Periodicity en_US
dc.subject.mesh Reference Values en_US
dc.subject.mesh Osmolar Concentration en_US
dc.subject.mesh Inhibins, blood en_US
dc.subject.mesh Luteinizing Hormone, blood en_US
dc.title Annual patterns of luteinizing hormone, follicle stimulating hormone, testosterone and inhibin in normal men en_US
dc.type Article en_US


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