Results 281 to 290 of about 1,236,540 (346)

Sexual Maturation in Thai Boys

Journal of Pediatric Endocrinology and Metabolism, 2010
A worldwide secular trend towards earlier onset of puberty in girls has been noted during recent years. However, the data on sexual maturation of boys are relatively scarce and normative data of sexual maturation in Thai boys are still lacking.To determine the age of secondary sexual maturation in normal Thai boys.Three hundred healthy urban boys aged ...
P, Mahachoklertwattana, U, Suthutvoravut, P, Poomthavorn, S, Charoenkiatkul, U, Udomsubpayakul, R, Rajatanavin   +5 more
openaire   +2 more sources

Sexual Maturation in the Bull

Reproduction in Domestic Animals, 2008
ContentsIn this review, we describe the process of sexual maturation in the bull calf. The testes of the bull grow relatively slowly until approximately 25 weeks of age and then a rapid phase of growth occurs until puberty, at 37–50 weeks of age. During the early postnatal phase of slower growth of the testis pre‐spermatogonia and some spermatogonia ...
N, Rawlings, A C O, Evans, R K, Chandolia, E T, Bagu   +3 more
openaire   +2 more sources

Diagnosis and management of precocious sexual maturation: an updated review

European Journal of Pediatrics, 2021
A. Cheuiche, L. G. da Silveira, L. D. de Paula, I. Lucena, S. Silveiro   +4 more
semanticscholar   +1 more source

GnRH neurons recruit astrocytes in infancy to facilitate network integration and sexual maturation

Nature Neuroscience, 2021
Pellegrino G, Martin M, Allet C, Lhomme T, Geller S, Franssen D, Mansuy V, Manfredi-Lozano M, Coutteau-Robles A, Delli V, Rasika S, Mazur D, Loyens A, Tena-Sempere M, Siepmann J, Pralong Fp, Ciofi P, Corfas G, Parent As, Ojeda Sr, Sharif A, Prevot V   +21 more
semanticscholar   +1 more source

Understanding premature sexual maturation

Paediatrics and Child Health, 2011
Abstract Premature sexual maturation is a general term encompassing precocious puberty as well as several normal variants in both boys and girls. It is important to be able to determine the specific cause in order to formulate an appropriate plan of management.
Fiona J. Ryan, Geetha Anand, Nilanjana Ray   +2 more
openaire   +1 more source

Premature sexual maturation

2011
Abstract Premature sexual maturation is a frequent cause for referral in paediatric endocrinology. Although clinical evaluation will suffice to reassure the patient and family in a majority of cases, premature sexual maturation can reveal severe conditions and need a thorough evaluation to identify its cause and potential for progression,
Jean-Claude Carel, Juliane Léger
openaire   +1 more source

Adolescents' self-assessment of sexual maturation.

Pediatrics, 1980
The variability in time on onset and progression of puberty warrants the use of stage of sexual maturation rather than chronologic age in assessing biological and behavioral measures during adolescence.
P. Duke, I. Litt, R. T. Gross
semanticscholar   +1 more source

Etiologies of Sexual Maturation: A Model System Based on the Sexually Maturing Rat

1976
Publisher Summary This chapter discusses the etiologies of sexual maturation based on the studies performed in postulated models in rats and children. The chapter outlines the changes in blood in luteinizing hormone (LH) and follicle-stimulating hormone (FSH) during maturation in rats and other animal models.
W D, Odell, R S, Swerdloff
openaire   +2 more sources

Light intensity and sexual maturity

American Journal of Physical Anthropology, 1969
AbstractThere are confirmable clines, by latitude, of melanin concentration in pigmentation for man as well as other mammals and birds. This has been suggested to be, in man, a result of the importance of vitamin D synthesis which can be inhibited by darker skins in higher latitudes.
openaire   +2 more sources

Delayed sexual maturation.

Pediatrician, 1988
Absence of any sign of gonadal development (i.e. increase in size of the testes or presence of breast budding) before the age of 13 years in girls and 14 years in boys represents the condition of delayed sexual maturation. After this age, the patient should be thoroughly clinically examined and a basic biological work-up should be performed ...
openaire   +1 more source