[Critical periods in the pubertal development of girls]. / Kriticheskie periody v pubertal'nom razvitii devochek.

The authors analyze the results of physical and sexual development of girls at the pubertal period, as well as their blood levels of hormones participating in the growth regulation and characterizing the +hypophyseal-gonadal relations. A staged pattern of pubertal period is emphasized+ and the critical period singled out: the age of menarche onset and establishment of the ovulation cycle (at the age of 14-15).

[Characteristics of sexual maturation of girls born in the state of hypotrophy]. / Osobennosti polovogo razvitiia devochek, rodivshikhsia v sostoianii gipotrofii.

A total of 156 adolescent and young girls, delivered at term with birth weights below 3000 g were examined. In puberty, they showed a considerable incidence of skeletal disproportions, a retardation in the increment of pelvic dimensions, disturbed menarche, disrupted sequence and degree of development of secondary sexual characters. Continuity of medical surveillance of children, delivered with low birth weights, by a pediatrician and a pediatric gynecologist is essential in order to prevent reproductive disorders.

[Hormonal regulation of the processes of growth and sexual maturation in girls with accelerated physical development]. / Gormonal'naia reguliatsiia protsessov rosta i polovogo sozrevaniia devochek s akseleratsiei fizicheskogo razvitiia.

The peculiarities of physical growth and sexual maturity were investigated in 300 girls with accelerated physical development aged 9 to 17 years. It was found, that maximum rates of the somatic formation, a high level of the growth hormone and testosterone as well as low estradiol secretion are seen during the prepubescent stage of maturity. After the menarche the somatic formation rates, the growth hormone and testosterone secretion decrease, whereas estradiol secretion progressively rises.