نتایج جستجو برای: Precocious
تعداد نتایج: 3861 فیلتر نتایج به سال:
Extended Abstract Precocious puberty is the appearance of secondary sexual characteristics before 8 years old in girls and 9 years old in boys. Precocious puberty is divided into 3 groups of central, peripheral and normal variants. Central precocious puberty is accompanied by activation of hypothalamic-pituitary-gonadal axis which causes increase in secretion of GnRH, and in turn increase i...
Precocious puberty can cause several adverse effects on final growth and social behavior in girls. Recently studies showed that low serum vitamin D levels might be associated with precocious puberty. The aim of this research was to investigate the association between serum vitamin D levels and central precocious puberty in girls. Girls with central precocious puberty under the age of 8 we...
Precocious puberty may be classified as true precocious puberty or precocious pseudopuberty. The latter one in females may be in sexual (feminization) or hereto sexual (virilization). Ovarian tumors may be iso sexual call tumor, teratoma, etc, are among the etiologic factors of precocious psudopuberty. This paper presents a 4-year girl was admitted to the hospital with severe abdominal pain. ...
Background: This study was performed in order to detect the frequency of different types of precocious puberty, predisposing factors and to show which group of patients need to treatment. Materials and Methods: In this study, 74 patients who referred to pediatric endocrine clinic of Imam Khomeini Hospital and private office from 1993-2000 were assessed. A complete history was taken and physical...
background: precocious puberty, as early physical development and low final height might lead to psychosocial problems. objective: to evaluate etiology and clinical feature of precocious puberty in a cohort of iranian children. materials and methods: in this case-series study, 44 girls and 8 boys with precocious puberty referred to endocrine reserch centre (firouzgar), institute of endocrinolog...
Introduction: Precocious pubertyin girls refers to onset of puberty before age 8. The purpose of this study therefore was the study of the effect of aerobic training and the use of GnRH agonists on estradiol serum levelsand Gonadotropins in girls with central precocious puberty. Methods: Twenty-five girls with central precocious puberty (aged 7.44±0.34 years) participated in this stud...
Background: The first step in assessment of children with precocious puberty is to determine whether the cases are of benign nature or have more serious causes. It seems that two criteria of "height age" and "bone age" are helpful for this decision. Materials and Methods: To evaluate the usefulness of those criteria, a retrospective study of 74 children (50 girls and 24 boys) with precocious pu...
The up-regulator regulation and down-regulator regulation of gonadotropin-releasing hormone (GnRH) in central precocious puberty is not yet known. However, recent advances in neuroendocrinology have shown the controlling role of arginine-phenylalanine (RF)-amide-related peptides (RFRPs) on GnRH secretion in different phenomenon of reproduction such as estrus cycle and pregnancy, but the exact r...
Aims Precocious puberty is defined as the precocious onset of pubertal manifestations. The cause of precocious puberty is unknown despite numerous attempts to find it. Despite most precocious puberty is sporadic disease, some patients have familial tendency. Recently specific gene mutation has proven to cause precocious puberty and the existence of familial precocious puberty is emerging. This ...
OBJECTIVE To determine the etiology of precocious puberty in children and to compare the clinical and laboratory parameters of central and peripheral precocious puberty. STUDY DESIGN Cross-sectional study. PLACE AND DURATION OF STUDY Endocrine Clinic at National Institute of Child Health, Karachi, from January 2009 to December 2011. METHODOLOGY Children presenting with precocious puberty ...
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