[Dynamics of gonadotropic hormones during ontogeny].
The concentrations of gonadotropic hormones (luteinizing hormone--LH, and follicle-stimulating hormone--FSH) were studied in the blood plasma of 175 persons of both sexes beginning from birth up to the old age by means of specific radioimmunological methods. Evident change in the gonadotropic hormone level depending on age has been observed. Immediately after birth hormone concentrations are slightly higher and correspond to those of the pubertal period. A decrease in hormone concentration lasting up to the puberty is seen after marked hormone release into the blood of children 1 to 4 months of age. During the puberty the level of hormones rises exceeding their concentration in a mature age.  Cyclic hormone secretion in females depending on the menstrual phase cycle and circadian secretion rhythm of males are peculiar to the pubertal period. Males of other age groups show the lack of the anterior pituitary lobe, corresponding in time to the lowest gonadotropin concentration in the blood of persons with circadian rhythm. The levels of gonadotropic hormones increase again following menopause and/or male climax commencement but their specific activity is reduced.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002031:Bulgaria; D002940:Circadian Rhythm; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D008875:Middle Aged; D010507:Periodicity; D012016:Reference Values; D012737:Sex Factors
D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone
Dinamika gonadotropnykh gormonov v ontogeneze.