نتایج جستجو برای: delay in puberty
تعداد نتایج: 16994364 فیلتر نتایج به سال:
The administration of adult physiological levels of testosterone (T) and 17beta-estradiol (E(2)) to male Siberian hamsters was previously shown to delay the onset of puberty. To examine whether this is a response common to other rodents, we investigated whether exogenous steroids also alter the onset of puberty in Syrian hamsters and mice. Juvenile male Syrian hamsters and mice were implanted w...
Hypothalamic neuropeptide Y (NPY) plays a central role in the control of food intake, energy balance, and modulation of neuroendocrine functions. In particular, an increase in NPY expression participates in the inhibition of the reproductive activity under poor nutritional conditions. The present study was designed to evaluate further the involvement of the Y1 subtype of NPY receptors in these ...
Pubertal onset only occurs in a favorable, anabolic hormonal environment. The neuropeptide kisspeptin, encoded by the Kiss1 gene, modifies GnRH neuronal activity to initiate puberty and maintain fertility, but the factors that regulate Kiss1 neurons and permit pubertal maturation remain to be clarified. The anabolic factor insulin may signal nutritional status to these neurons. To determine whe...
This study examines the developmental changes of sleep patterns as a function of gender and puberty and assesses the prevalence of sleep habits and sleep disturbances in early adolescence. It also investigates the relationship between sleep patterns, sleep habits and difficulty falling asleep and nocturnal awakenings. The present analyses are based on results available for 588 boys and 558 girl...
Abstract Introduction: Teenagers (especially girls) who are going through puberty are among vulnerable populations whose sexual needs receive little attention. Objective: This study aimed to determine educational needs of 11-14 year old girls on sexual health in Dezful. Methods: This cross-sectional study was conducted on 810 middle school girls aging 11 to 14 in Dezful city in 2012....
OBJECTIVE Congenital hypogonadotropic hypogonadism (CHH) and constitutional delay of growth and puberty (CDGP) represent rare and common forms of GnRH deficiency, respectively. Both CDGP and CHH present with delayed puberty, and the distinction between these two entities during early adolescence is challenging. More than 30 genes have been implicated in CHH, while the genetic basis of CDGP is p...
Introduction: The aim of this study was to investigate effectiveness of increasing awareness of puberty changes on the resilience and distress tolerance in female Teens of first high school. Methods: This study was a quasi-experimental with pre-posttest and control group. The statistical population included female Teens of firs period of high school in number 15 Educational zone of Tehran city ...
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