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Precocious puberty

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https://www.readbyqxmd.com/read/29323691/premature-thelarche
#1
Aditi Khokhar, Angela Mojica
Premature thelarche is a benign condition that affects young girls and may be interpreted as a sign of central precocious puberty (CPP). Parental concern is common when breast development is noted in a young girl. It is important to differentiate premature thelarche from CPP, as the latter is a more serious disorder that may affect final adult height and menarcheal age, and may have psychological implications as well. Distinguishing between the two conditions clinically may help the patients avoid unnecessary testing...
January 1, 2018: Pediatric Annals
https://www.readbyqxmd.com/read/29323690/premature-adrenarche
#2
Laura Novello, Phyllis W Speiser
Adrenarche is when a child's adrenal cortex starts to secrete adrenal androgen precursors. Dehydroepiandrosterone (DHEA) is the most abundant product of the adrenal cortex, and is a weak androgen agonist thought to be responsible for the clinical signs of pubarche by conversion to more potent androgens, testosterone, and dihydrotestosterone. DHEA's extra-adrenal sulfation product, dehydroepiandrosterone sulfate, is a stable marker for adrenal androgenic activity. Pubarche is the physical manifestation of androgenic hormone production, and includes the development of pubic and axillary hair, adult body odor, and acne...
January 1, 2018: Pediatric Annals
https://www.readbyqxmd.com/read/29312590/gnrh-agonist-treatment-for-idiopathic-central-precocious-puberty-can-improve-final-adult-height-in-chinese-girls
#3
Yanqin Ying, Jing Tang, Wei Chen, Zemin Cai, Wan Ting Niu
Object: To study the outcomes of GnRHa on final adult height in Chinese idiopathic central precocious puberty (ICPP) girls and the involved factor(s) that can predict height gain. Methods: We conducted a retrospective analysis on 10 years of data obtained from three clinical hospitals from January 2005 to March 2015, and 101 girls with ICPP, who received GnRHa therapy for more than six months and already reached their adult height were enrolled. Results: Height, bone age, midparent height, HtSDS, sexual development, therapy duration and predicted adult height(PAH)at start and end of GnRHa, and the final adult height(FAH) were recorded and calculated...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311684/a-severely-short-statured-girl-with-47-xx-%C3%A2-%C3%A2-14-46-xx-upd-14-mat-mosaicism
#4
Kikumi Ushijima, Syuichi Yatsuga, Takako Matsumoto, Akie Nakamura, Maki Fukami, Masayo Kagami
The predominant symptoms of trisomy 14 mosaicism are prenatal and postnatal growth failure, ear abnormalities, congenital heart disease, developmental delay, and genitourinary abnormalities. Maternal uniparental disomy of chromosome 14 (upd(14)mat) presents discernible clinical features such as prenatal and postnatal growth failure, hypotonia, precocious puberty, and obesity. Given the small number of previously reported patients with a combination of trisomy 14 mosaicism and upd(14)mat, the detailed clinical features of these patients remain to be elucidated...
January 9, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29303010/the-usefulness-of-circulating-levels-of-leptin-kisspeptin-and-neurokinin-b-in-obese-girls-with-precocious-puberty
#5
Min Jae Kang, Yeon Joung Oh, Young Suk Shim, Joon Woo Baek, Seung Yang, Il Tae Hwang
This study investigated the relationships of circulating leptin, kisspeptin, and neurokinin B (NKB) levels with precocious puberty (PP) in overweight/obese girls and evaluated the usefulness of these markers in the initiation of puberty. One hundred and twenty-eight girls aged 7.0-8.9 years with PP (group A, normal-weight; group B, overweight/obese) and 30 age-matched normal controls (NC) were enrolled. Serum levels of leptin, kisspeptin, and NKB were measured by commercial kits. Serum leptin levels were higher in group A (4...
January 5, 2018: Gynecological Endocrinology
https://www.readbyqxmd.com/read/29302264/the-influence-of-gonadotropin-releasing-hormone-agonists-on-anthropometric-change-in-girls-with-central-precocious-puberty
#6
Jong Wan Yoon, Hyun A Park, Jieun Lee, Jae Hyun Kim
Purpose: The potential effect of gonadotropin-releasing hormone agonist (GnRHa) treatment on the weight of girls with central precocious puberty (CPP) remains a controversy. We investigated anthropometric changes during and after GnRHa treatment among girls with CPP. Methods: This retrospective study evaluated data from 127 girls with CPP who received GnRHa treatment for ≥2 years. Height, weight, and body mass index (BMI) values were compared at the baseline (visit 1), after 1 year of GnRHa treatment (visit 2), the end of GnRHa treatment (visit 3), and 6-12 months after GnRHa discontinuation (visit 4)...
December 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29301187/treatment-outcomes-of-gonadotropin-releasing-hormone-agonist-in-obese-girls-with-central-precocious-puberty
#7
Hye Ryun Kim, Hyo-Kyoung Nam, Young-Jun Rhie, Kee-Hyoung Lee
PURPOSE: This study investigated the influence of obesity on the clinical course and effect of gonadotropin-releasing hormone analog (GnRHa) treatment in girls with central precocious puberty (CPP). METHODS: Medical records of 182 girls with CPP treated with GnRHa were reviewed. They were divided into 2 groups: normal weight (n=108) and overweight/obesity (n=74). Chronological age (CA), bone age (BA), difference between BA and CA (BA-CA), standard deviation score (SDS) of height, body mass index (BMI), predicted adult height (PAH), and laboratory findings were compared at baseline, after 1 year, and at the end of GnRHa treatment in both groups...
December 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29298283/kisspeptin-permits-the-sexual-development-of-female-rats-with-normal-and-precocious-puberty-but-is-not-a-trigger-for-it
#8
Wei Song, Kailin Li, Chao Sun, Jiang Xue
OBJECTIVE: We inferred how KISS-1/GPR54 system to involved in precocious puberty by observing hormones level during the process of precocious puberty in model and normal rats during sexual development and the estrus cycle. METHOD: Female rats were divided randomly into CPP and control groups; the former were injected with NMDA twice daily, and control groups were injected with saline. Blood and tissue samples were collected and measured during the stages of prepuberty, vaginal opening, estrus, proestrus and diestrus...
December 4, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/29280737/a-critical-appraisal-of-the-effect-of-gonadotropin-releasing-hormon-analog-treatment-on-adult-height-of-girls-with-central-precocious-puberty
#9
Abdullah Bereket
Central precocious puberty (CPP) is a diagnosis that pediatric endocrinologists worldwide increasingly make in girls of age 6-8 years and is mostly idiopathic. Part of the reason for increasing referral and diagnosis is the perception among the doctors as well as the patients that treatment of CPP with long-acting gonadotropin-releasing hormon analogues (GnRHa) promote height of the child. Although, the timing and the tempo of puberty does influence statural growth and achieved adult height, the extent of this effect is variable depending on several factors and is modest in most cases...
December 27, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/29278519/gnrh-dependent-precocious-puberty-manifested-at-the-age-of-14-months-in-a-girl-with-47-xxx-karyotype
#10
Nicos Skordis, Eleana Ferrari, Aria Antoniadou, Leonidas A Phylactou, Pavlos Fanis, Vassos Neocleous
This case report describes a 47,XXX girl who presented very early, at the age of 14 months, with signs of sexual precocity (breast and pubic hair development, menarche) and was finally diagnosed with GnRH dependent precocious puberty with no evidence of underlying central nervous system pathology. Molecular testing did not identify any genetic defect in any of the genes tested (KISS1, KISS1R, DLK1 and the intronless MKRN3). Though previous studies have shown a link between karyotype 47,XXX and precocious puberty, this is the youngest patient reported so far...
July 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29237522/-an-analysis-of-cardiac-autonomic-nerve-function-in-girls-with-idiopathic-central-precocious-puberty
#11
Lan-Fen Yi, Hong-Xia Wen, Mei Qiu, Xiao-Xiao Cao
OBJECTIVE: To investigate the cardiac autonomic nerve function in girls with idiopathic central precocious puberty (ICPP). METHODS: A total of 66 girls with ICPP were enrolled, among whom 36 were obese and 30 were not obese. A total of 68 age-matched healthy girls (normal controls) and 51 girls with simple obesity were enrolled as controls. All the subjects underwent 24-hour ambulatory electrocardiography, and deceleration capacity of heart rate (DC), acceleration capacity of heart rate (AC), and heart rate variability (HRV), and body mass index (BMI) were compared between groups...
December 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29213166/precocious-puberty-an-experience-from-a-major-teaching-hospital-in-central-saudi-arabia
#12
Huda A Osman, Nasir A M Al-Jurayyan, Amir M I Babiker, Hessah M N Al-Otaibi, Reem D H AlKhalifah, Sharifah D A Al Issa, Sarar Mohamed
Precocious puberty is a developmental process that gives rise to secondary sexual characteristics before the age of 8 years in girls and 9 years in boys. In general, precocious puberty can be classified as central or peripheral. This is a retrospective hospital-based study was conducted at King Khalid University Hospital (KKUH), Riyadh, Saudi Arabia, during the period January 1990 and December 2016. Data were abstracted from the medical records of patients diagnosed with precocious puberty, with special emphasis on age, sex, clinical characteristics, and relevant hormonal assay...
2017: Sudanese Journal of Paediatrics
https://www.readbyqxmd.com/read/29194042/a-case-of-riley-ruvalcaba-syndrome-with-a-novel-pten-mutation-accompanied-by-diffuse-testicular-microlithiasis-and-precocious-puberty
#13
Elif Ozsu, Askın Sen, Serdar Ceylaner
BACKGROUND: Bannayan Riley Ruvalcaba syndrome (BRRS) is exceedingly rare, with only about 50 reported cases to date. CASE PRESENTATION: We report a patient with hypoglycemia, precocious puberty and diffuse testicular microlithiasis accompanying BRRS, and think that this case is important in the light of a newly identified mutation in the PTEN gene. CONCLUSIONS: Close attention must be paid in terms of PTEN mutations in cases of macrocephaly and accompanying neurological and dermatological findings...
December 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29176028/higher-phthalate-concentrations-are-associated-with-precocious-puberty-in-normal-weight-thai-girls
#14
Khomsak Srilanchakon, Thawiphark Thadsri, Chutima Jantarat, Suriyan Thengyai, Wichit Nosoognoen, Vichit Supornsilchai
BACKGROUND: The cause of precocious puberty may be associated with genetics and other conditions such as central nervous system (CNS) insults, or the exposure to endocrine disrupting chemicals (EDCs). Phthalates is known to be one of the EDCs and have estrogenic and antiandrogenic activities, and may be associated with advanced puberty. The objective of the study was to determine the association between urinary phthalate metabolites and advanced puberty. METHODS: A cross-sectional study was conducted in patients with precocious puberty (breast onset <8 years, n=42) and early puberty (breast onset 8-9 years, n=17), compared to age-matched controls (n=77)...
November 25, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29162477/mir-301b-3p-3584-5p-enhances-low-dose-mono-n-butyl-phthalate-mbp-induced-proliferation-by-targeting-rasd1-in-sertoli-cells
#15
Xiaoqin Yin, Tan Ma, Ruitong Han, Jie Ding, Huan Zhang, Xiaodong Han, Dongmei Li
To investigate the possible molecular mechanism of low concentration plasticizer mono-n-butyl phthalate (MBP) -induced juvenile Sertoli cells (SCs) proliferation, we evaluated global alterations of miRNA and mRNA expression in rat SCs treated with 0.1mM MBP. Microarray analysis revealed that miR-3584-5p and miR-301b-3p were up-regulated and their common target gene Dexamethasone-induced Ras-related protein 1 (Rasd1) was down-regulated. Further work suggested that SCs proliferation induced by low concentration MBP in vitro might be mediated by Rasd1 regulating ERK1/2 signaling pathway...
November 18, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29157487/contr%C3%A3-le-de-l%C3%A2-axe-gonadotrope-nouveaux-aspects-physiologiques-et-th%C3%A3-rapeutiques-control-of-the-gonadotrope-axis-new-physiologic-and-therapeutic-aspects
#16
L Maione, S Christin-Maître, P Chanson, J Young
The endocrine and exocrine functions of the gonads are controlled by the gonadotrope axis, whose master regulator is the hypothalamic decapeptide GnRH. The Kisspeptin/Neurokinin B (Kp/NkB) neuronendocrine system is the main physiologic regulator of GnRH neurons. The Kp/NkB system is currently considered the key mediator for the hypothalamic negative feedback exerted by sex steroids and prolactin, as well as by various metabolic signals. Intrinsic alterations or regulatory abnormalities of Kp/NkB system lead to various gonadotrope axis puberty and fertility dysfunctions...
October 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/29156706/mkrn3-functions-as-a-novel-ubiquitin-e3-ligase-to-inhibit-nptx1-during-puberty-initiation
#17
Huifang Liu, Xiangxin Kong, Fengling Chen
Central precocious puberty (CPP) is attributed to the disorder of some trigger factors those can activate the hypothalamic-pituitary-gonadal axis controlled by GnRH neurons. Many recent studies reveal one of those trigger factors, Makorin ring finger protein 3 (Mkrn3), whose loss-of-function mutations are implicated in CPP. Although Mkrn3 contained zinc Ring finger domain is considered as a putative E3 ubiquitin ligase, its actual function is never reported. Here, our results demonstrated that in mice hypothalamus before and when puberty initiated, Mkrn3 expressed the reversed tendency with Nptx1, which is an important secreted protein for neuron development...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29147481/is-precocious-puberty-linked-to-hypothalamic-expression-of-arginine-phenylalanine-amide-related-peptide
#18
REVIEW
Yuanyuan He, Wen Sun, Jian Yu
The up-regulation and down-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 role of RFRPs in puberty and its related pathologic condition, precocious puberty, is not clear yet. This paper hypothesizes that RFRP is a regulatory peptide of puberty and might prevent the precocious puberty...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29145926/corrigendum-to-increased-high-molecular-weight-adiponectin-but-decreased-total-adiponectin-and-kisspeptin-in-central-precocious-puberty-compared-with-aged-matched-prepubertal-girls
#19
Chantacha Sitticharoon, Maynart Sukharomana, Supawadee Likitmaskul, Malika Churintaraphan, Pailin Maikaew
The aim of the present study was to compare serum leptin, kisspeptin, total adiponectin, high molecular weight (HMW) adiponectin and neuropeptide Y (NPY) levels between girls with central precocious puberty (CPP; n=26, 7-9.5 years old) and age-matched controls (n=29) including or excluding obese girls. Leptin and NPY levels were comparable between CPP and control girls. Kisspeptin levels were lower in the CPP than control group, and were positively correlated with oestrogen in the control group and with systolic and diastolic blood pressure in the CPP group...
November 2017: Reproduction, Fertility, and Development
https://www.readbyqxmd.com/read/29144249/effect-of-antiandrogen-aromatase-inhibitor-and-gonadotropin-releasing-hormone-analog-on-adult-height-in-familial-male-precocious-puberty
#20
Ellen Werber Leschek, Armando C Flor, Joy C Bryant, Janet V Jones, Kevin M Barnes, Gordon B Cutler
OBJECTIVE: Antiandrogen, aromatase inhibitor, and gonadotropin-releasing hormone analog (GnRHa) treatment normalizes growth rate and bone maturation and increases predicted adult height (AH) in boys with familial male-limited precocious puberty (FMPP). To evaluate the effect of long-term antiandrogen, aromatase inhibitor, and GnRHa on AH, boys with FMPP who were treated were followed to AH. STUDY DESIGN: Twenty-eight boys with FMPP, referred to the National Institutes of Health, were started on antiandrogen and aromatase inhibitor at 4...
November 2017: Journal of Pediatrics
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