نتایج جستجو برای: delay in puberty

تعداد نتایج: 16994364  

Journal: :Proces 2023

Early and late puberty pose a risk for many problems later in life. Various theories suggest that child sexual abuse victimization may either accelerate or delay the onset of puberty. This systematic literature review examines relationship between age girls. Fourteen scientific studies were included analyzed. There is an association early at menarche girls, but there insufficient evidence with ...

2011
Willem de Ronde Frank H de Jong

Aromatase inhibitors effectively delay epiphysial maturation in boys and improve testosterone levels in adult men Therefore, aromatase inhibitors may be used to increase adult height in boys with gonadotropin-independent precocious puberty, idiopathic short stature and constitutional delay of puberty. Long-term efficacy and safety of the use of aromatase inhibitors has not yet been established ...

Thyroid ectopia is a dysgenesis of thyroid gland and Lingual position represents the most frequent ectopic location accounting up to 90% of ectopic cases. Hypothyroidism is commonly present because of absence of a normal thyroid gland in most instances. Primary hypothyroidism in juvenile population generally leads to retardation of linear growth and delay or even arrested puberty. We present a ...

Journal: :INTERNATIONAL JOURNAL OF ENDOCRINOLOGY 2019

Journal: :The Journal of clinical endocrinology and metabolism 1999
J C Achermann W X Gu T J Kotlar J J Meeks L P Sabacan S B Seminara R L Habiby P C Hindmarsh D P Bick R J Sherins W F Crowley L C Layman J L Jameson

Although delayed puberty is relatively common and often familial, its molecular and pathophysiologic basis is poorly understood. In contrast, the molecular mechanisms underlying some forms of hypogonadotropic hypogonadism (HH) are clearer, following the description of mutations in the genes KAL, GNRHR, and PROP1. Mutations in another gene, DAX1 (AHC), cause X-linked adrenal hypoplasia congenita...

Journal: :Hormone research in paediatrics 2014
Carine Villanueva Jesús Argente

Puberty is a complex maturation process that begins during fetal life and persists until the acquisition of reproduction function. The fundamental event that activates puberty occurs in the hypothalamus. A complex neuron network stimulates GnRH secretion, which stimulates pituitary gonadotropin secretion and then gonadal steroid secretion. Pubertal delay is defined as the presentation of clinic...

Journal: :Archives of disease in childhood 1991
A Papadimitriou S Wacharasindhu K Pearl M A Preece R Stanhope

Forty six prepubertal boys who had constitutional growth delay were treated with oxandrolone. Mean age at the onset of treatment was 11.9 years (range 9.0-14.0) and bone age delay was 1.9 'years'. The dose of oxandrolone used was a mean of 0.05 mg/kg (range 0.03-0.18) for a mean of 0.9 years (range 0.2-3.6). Height velocity increased from a mean (SD) before treatment of 4.0 (1.0) to 7.5 (1.2) c...

Journal: :Archives of disease in childhood 1994
A Albanese G D Kewley A Long K N Pearl D G Robins R Stanhope

Thirty three boys (mean 14.6 years old, range 12.8-16.2 years) with constitutional delay of growth and puberty were randomised into two groups to determine which form of oral treatment would give the better anthropometric response. The two drugs were administered by mouth (one tablet/day) for a mean of 3.5 months (range 3-7 months). At randomisation, 17 boys received testosterone undecanoate (4...

2006
Daniel L. Hummer Tammy J. Jechura Megan M. Mahoney Theresa M. Lee

The slowly maturing, long-lived rodent Octodon degus (degu) provides a unique opportunity to examine the development of the circadian system during adolescence. These studies characterize entrained and free-running activity rhythms in gonadally intact and prepubertally gonadectomized male and female degus across the first year in order to clarify the impact of sex and gonadal hormones on the ci...

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