[Effect of sex on annual variations in plasma LH and FSH levels in prepubertal subjects].
We studied, from 1977 to 1979, 61 females and 72 males (aged 6 to 10 years) in order to demonstrate the occurrence of FSH and LH circannual variations. The data were fitted a cosine function by least square method in order to describe any rhythm and to estimate its parameters:mesor, amplitude, acrophase. Our data suggest that in prepubertal age the behaviour of FSH secretion is different in two sexes, but without circannual rhythm. LH instead shows a statistically significant circannual rhythm in both groups, without differences in mean levels between the two sexes.
D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D010507:Periodicity; D011627:Puberty; D012621:Seasons; D012737:Sex Factors
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone
Influenza del sesso sulle variazioni circannuali dei livelli plasmatici di lh ed fsh in soggetti prepuberi.