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Central precocious puberty

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https://www.readbyqxmd.com/read/29156706/mkrn3-functions-as-a-novel-ubiquitin-e3-ligase-to-inhibit-nptx1-during-puberty-initiation
#1
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
#2
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
#3
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/29131093/metformin-for-rapidly-maturing-girls-with-central-adiposity-less-liver-fat-and-slower-bone-maturation
#4
Francis de Zegher, Cristina García Beltrán, Abel López-Bermejo, Lourdes Ibáñez
BACKGROUND/AIMS: Girls with low-birth weight (LBW) and postnatal weight catch-up tend to develop visceral and hepatic fat excess, which may be accompanied by an upregulated adrenarche with precocious pubarche (PP) and by a rapidly progressive puberty with early menarche and shorter stature. A pilot study suggested that metformin treatment for 4 years reduces central adiposity in LBW-PP girls and normalizes puberty and adult height. In this cohort, we studied the relationship between metformin treatment, bone maturation, and body composition...
November 7, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29114697/effect-of-gonadotropin-releasing-hormone-analogue-on-final-adult-height-among-jordanian-children-with-precocious-puberty
#5
Hala H Swaiss, Nahla M Khawaja, Oraib H Farahid, Anwar M Batieha, Kamel M Ajlouni
To study the effect of gonadotropin-releasing hormone analogue (GnRHa) on final adult height (FAH) among Jordanian children with central precocious puberty (CPP). Methods: It is a retrospective historical cohort study. We assessed the FAH and height gain in 43 children with CPP (39 females and 4 males) who received GnRHa and 13 children with CPP (11 females and 2 males) who did not receive GnRHa and achieved FAH between 2004 and 2014. Final adult height was compared to target height (TH) and mid- parental height (MPH) in both groups...
November 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/29025205/diurnal-variation-of-gonadotropin-levels-in-girls-with-early-stages-of-puberty
#6
Yu Sun Kang, Dong-Yoon Yoo, In Hyuk Chung, Eun-Gyong Yoo
PURPOSE: Pubertal gonadotropin secretion shows circadian pattern and the luteinizing hormone (LH) levels tend to rise in later stages of puberty in girls. We studied the usefulness of basal LH in the evaluation of central precocious puberty with emphasis on the influence of sampling time. METHODS: Medical records of 334 girls that underwent gonadotropin-releasing hormone stimulation test (GnRHST) were reviewed. Auxological and laboratory data were compared between those with early morning (EM, before 10 AM) and late morning/afternoon (LM/A, after 10 AM) basal samples...
September 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/29025204/insulin-resistance-and-bone-age-advancement-in-girls-with-central-precocious-puberty
#7
Jin Ho Hur, Sora Park, Mo Kyung Jung, Seok Jin Kang, Ahreum Kwon, Hyun Wook Chae, Ho-Seong Kim, Duk Hee Kim
PURPOSE: Precocious puberty has significantly increased recently. While obesity is associated with puberty timing, the relationship between obesity and central precocious puberty (CPP) remains controversial. The purpose of this study was to determine whether insulin resistance is associated with bone age (BA) advancement in girls with CPP. METHODS: We retrospectively analyzed the records of 804 girls referred for puberty evaluation. Anthropometric measurements, BA, sex hormone, sex hormone binding globulin (SHBG), and insulin levels, lipid profiles, and gonadotropin releasing hormone stimulation tests were assessed...
September 2017: Annals of Pediatric Endocrinology & Metabolism
https://www.readbyqxmd.com/read/28988223/makorin-ring-finger-3-gene-analysis-in-koreans-with-familial-precocious-puberty
#8
Hwal Rim Jeong, Hae Sang Lee, Jin Soon Hwang
BACKGROUND: Precocious puberty is known as an idiopathic, sporadic disease. Recently, specific mutations have been shown to cause familial central precocious puberty (CPP). The makorin ring finger 3 (MKRN3) gene plays a key role in puberty; loss-of-function mutations in the gene trigger familial CPP. To date, most described patients have been Western; few Asians with CPP have been documented. OBJECTIVE: To identify MKRN3 gene mutations or polymorphisms in Korean patients with familial CPP...
October 26, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28975428/a-new-efficient-method-to-monitor-precocious-puberty-nationwide-in-france
#9
Annabel Rigou, Joëlle Le Moal, Juliane Léger, Alain Le Tertre, Jean-Claude Carel
Clinical precocious puberty (PP) is a disease, reputed to be on the increase and suspected to be linked to endocrine disrupting chemicals (EDC) exposure. Population-based epidemiological data are lacking in France and scarce elsewhere. We accessed the feasibility of monitoring PP nationwide in France in this context, using a nationwide existing database, the French National Health Insurance Information System. Here, we present the method we used with a step-by-step approach to build and select the most suitable indicator...
October 3, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28973010/improved-final-predicted-height-with-the-injection-of-leuprolide-in-children-with-earlier-puberty-a-retrospective-cohort-study
#10
Yi-Chun Lin, Chih-Ying Lin, Siew-Yin Chee, Hung-Rong Yen, Fuu-Jen Tsai, Chiu-Ying Chen, Chung-Hsing Wang
The adult height of children with early onset puberty is limited by the premature maturation of hypothalamic-pituitary-gonadal axis. To evaluate the effects of gonadotropin-releasing hormone analog (GnRHa) treatment on the final height (FH) and bone maturation rate (BMR) in girls with early puberty (EP) or idiopathic central precocious puberty (ICPP), we examined data from girls who were diagnosed with EP or ICPP and underwent GnRHa (Leuplin Depot: 3.75 mg/month) at China Medical University Hospital, in Taiwan, between 2006 and 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28963633/there-is-no-association-between-vitamin-d-status-and-characteristics-of-central-precocious-puberty-in-girls
#11
Gwénaëlle Duhil de Bénazé, Raja Brauner, Jean-Claude Souberbielle
Vitamin D deficiency has been associated with several pathologies in humans and has recently been linked to idiopathic central precocious puberty in girls. We evaluated this potential link in a retrospective study. Among 493 girls with idiopathic central precocious puberty previously described, we selected 145 girls for whom a plasma sample at the initial evaluation was available to determine the concentration of 25OHD and 1,25(OH)2D. We analyzed the correlation between different puberty characteristics (BMI, growth rate the year before the onset of puberty, bone age, LH and FSH peaks, LH/FSH peak ratio, and estradiol concentration) and the concentration of 25OHD and 1,25(OH)2D...
December 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28938419/nocturnal-urinary-excretion-of-fsh-and-lh-in-children-and-adolescents-with-normal-and-early-puberty
#12
Nanna Kolby, Alexander S Busch, Lise Aksglaede, Kaspar Sørensen, Jorgen Holm Petersen, Anna-Maria Andersson, Anders Juul
Context: Clinical use of single serum gonadotropin measurements in children is limited by the pulsatile secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). However, first morning voided (FMV) urine may integrate the fluctuating gonadotropin serum levels. Objective: We aimed to evaluate urinary and serum gonadotropin levels according to age, sex, and pubertal stage in healthy children and to assess the clinical use of FMV urinary gonadotropins in children with disordered puberty...
October 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28926827/one-year-follow-up-of-girls-with-precocious-puberty-and-their-mothers-do-psychological-assessments-change-over-time-or-with-treatment
#13
Melissa J Schoelwer, Kelly L Donahue, Paula Didrick, Erica A Eugster
BACKGROUND: To determine whether psychological characteristics of girls with variations of early puberty and their mothers change over time and with treatment in girls with central precocious puberty (CPP). METHODS: Girls with CPP, premature adrenarche (PA), and early normal puberty (ENP) completed psychological assessments at baseline and after 1 year along with their mothers. All girls with CPP were treated with GnRH analogs. Psychological effects of group and time were examined using 2 × 3 mixed ANOVAs...
2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28891963/the-effect-of-bisphenol-a-on-puberty-a-critical-review-of-the-medical-literature
#14
REVIEW
Alberto Leonardi, Marta Cofini, Donato Rigante, Laura Lucchetti, Clelia Cipolla, Laura Penta, Susanna Esposito
Many scientific studies have revealed a trend towards an earlier onset of puberty and have disclosed an increasing number of children that display precocious puberty. As an explanation, some authors have considered the global socio-economic improvement across different populations, and other authors have considered the action of endocrine disrupting chemicals (EDCs). Among these, bisphenol A (BPA), an aromatic compound largely used worldwide as a precursor of some plastics and chemical additives, is well known for its molecular oestrogen-like and obesogenic actions...
September 10, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28890442/marked-geographic-patterns-in-the-incidence-of-idiopathic-central-precocious-puberty-a-nationwide-study-in-france
#15
Joëlle Le Moal, Annabel Rigou, Alain Le Tertre, Perrine Decrouy-Chanel, Juliane Leger, Jean-Claude Carel
OBJECTIVES: Precocious puberty seems to be increasing but epidemiological data are scarce. Our objective was to improve the epidemiologic knowledge on this disease, in the context of a suspected role of endocrine disruptor chemicals exposure. We analyzed the national incidence and spatial trends of idiopathic central precocious puberty in France in 2011-2013 in a cross-sectional descriptive study. DESIGN: We used an indicator based on treatment reimbursements recorded in the national insurance database, in boys less than 10 years and girls less than nine years old...
September 10, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28888750/primary-mediastinal-pure-seminomatous-germ-cell-tumor-germinoma-as-a-rare-cause-of-precocious-puberty-in-a-9-year-old-patient
#16
Alejandra Bravo-Balado, Lynda Torres Castellanos, Adriana Carrillo Rodríguez, Daniel Gómez Zapata, Juan Javier Lammoglia Hoyos, Rafael Andrade, Jaime Pérez Niño
Less than 5%-7% of germ cell tumors are extragonadal, with the central nervous system being the most common location in children, followed by retroperitoneum and mediastinum. Only 10% of mediastinal tumors are malignant and one-third of these are pure seminomas (germinomas). We report the case of a 9-year-old boy with development of secondary sexual characteristics. Beta-human chorionic gonadotropin was elevated and a mediastinal mass was found. Final histology showed a pure seminomatous germ cell tumor. To our knowledge, this is the first report of a boy with precocious puberty secondary to a mediastinal germinoma...
September 6, 2017: Urology
https://www.readbyqxmd.com/read/28866322/advanced-bone-age-as-an-indicator-facilitates-the-diagnosis-of-precocious-puberty
#17
Yue-Qin Xu, Gui-Mei Li, Yan Li
OBJECTIVE: Diagnosis of central precocious puberty has always been challenging in clinical practice. As an important method in the diagnosis of central precocious puberty, luteinizing hormone-releasing hormone stimulation test is complex and time-consuming. In many cases, clinical traits are inconsistent with luteinizing hormone-releasing hormone stimulation test results, therefore not reliable for diagnosis. In this study, the authors intended to find an indicator that predicts the results of the luteinizing hormone-releasing hormone stimulation test among subjects with early pubertal signs...
August 30, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28854950/prevalence-and-risk-factors-for-type-2-diabetes-mellitus-with-prader-willi-syndrome-a-single-center-experience
#18
Aram Yang, Jinsup Kim, Sung Yoon Cho, Dong-Kyu Jin
BACKGROUND: Prader-Willi syndrome (PWS) is often related to severe obesity and type-2 diabetes mellitus (T2DM). However, few studies, and none in Korea, have examined prevalence of T2DM and other variables in PWS. The aim of this study was to identify the prevalence and associated risk factors for T2DM in Korean patients with PWS. METHODS: We performed a retrospective cohort study of the 84 PWS patients aged 10 or over (10.3-35.8 years of age) diagnosed with PWS at Samsung Medical Center from 1994 to 2016...
August 30, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28791667/prevalence-of-vitamin-d-deficiency-in-girls-with-idiopathic-central-precocious-puberty
#19
Yue Zhao, Wenjun Long, Caiqi Du, Huanhuan Yang, Shimin Wu, Qin Ning, Xiaoping Luo
The relationship between vitamin D deficiency and idiopathic central precocious puberty (ICPP) has been recently documented. In this study, 280 girls diagnosed with ICPP and 188 normal puberty control girls of similar ages were enrolled and retrospectively studied. The ICPP group had significantly lower serum 25-hydroxyvitamin D (25[OH]D) levels than the control group. Furthermore, a nonlinear relationship was found between serum 25[OH]D and ICPP, and a cut-off point for serum 25[OH]D was found at 31.8 ng/ml for ICPP with and without adjusting the different confounding factors...
August 8, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28791047/central-precocious-puberty-and-response-to-gnrha-therapy-in-children-with-cerebral-palsy-and-moderate-to-severe-motor-impairment-data-from-a-longitudinal-case-control-multicentre-italian-study
#20
Patrizia Bruzzi, Maria Francesca Messina, Alessandra Bartoli, Barbara Predieri, Laura Lucaccioni, Simona Filomena Madeo, Alberto Verrotti, Filippo De Luca, Lorenzo Iughetti
BACKGROUND: Children affected by neurodevelopmental disability could experience early pubertal changes at least 20 times more than the general population. Limited data about central precocious puberty (CPP) among children affected by cerebral palsy (CP) are available. METHODS: This is a longitudinal, observational, retrospective, case-control study involving 22 children affected by CPP and CP (group A), 22 paired with CP but without CPP (group B), and 22 children with CPP without CP...
2017: International Journal of Endocrinology
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