Despite the clinical importance of delayed puberty, the understanding of this condition is hampered by the lack of studies evaluating etiologies and predisposing factors among large case series. We performed a retrospective study of clinical and laboratory data from adolescents (< or =18 yr of age) with delayed puberty who had been seen in our clinic between 1/96 and 7/99 (n = 232 subjects; 158...

This review aims at giving an overview on the physiological events leading to puberty onset in mammals and more specifically in cattle. Puberty is an important developmental milestone in mammals involving numerous changes in various physiological regulations and behaviors. It is a physiological unique event integrating several important central regulations at the crossroad of adaptation to envi...

Gonadotropin-releasing hormone ana-logues (GnRHa) are used to treat central precocious puberty. They also are used to delay puberty in short children with a prognosis for impaired adult height. In both cases, growth hormone (GH) treatment is sometimes added. To determine how North American pediatric endocrinologists are using the combination of GH and GnRHa, we searched the National Cooperative...

Knowing growth and pubertal development in Down Syndrome (DS) is very important to early detect catch down growth/weight or pubertal delay that can suggest disorders such as autoimmune diseases, endocrinophaties or oncological pathologies. These pathologies are more frequent in children with DS [1] and their presenting symptoms can be growth failure and delay of puberty because of poor food int...

Managerial and economic efficiencies of cattle reproduction systems that are seasonal in nature are most likely to benefit from having a compact calving season. Effective replacement heifer development is a critical segment of the integrated management program in an efficient beef cow production system. The replacement heifer represents the future profitability and genetic improvement of the co...

for all the people living in the community need to be sociable and behave according to the values and norms of society.in the meantime, the girls are given the responsibility of being a mother is very important in the future.. socialization is one of the factors causing early puberty is that many factors are involved in the onset.this study examines the impact of social control and the use of n...

The age of female puberty appears to have decreased in the United States and western countries as child health and nutrition have improved and obesity has become more prevalent. Also, environmental contaminants, particularly endocrine disruptors, may also play a role in lowering the age of puberty. Puberty at an early age increases the risk of stress, poor school performance, teen pregnancy, ea...