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Early puberty

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https://www.readbyqxmd.com/read/29353264/response-to-growth-hormone-treatment-in-very-young-patients-with-growth-hormone-deficiencies-and-mini-puberty
#1
Semra Çetinkaya, Şükran Poyrazoğlu, Firdevs Baş, Oya Ercan, Metin Yıldız, Erdal Adal, Abdullah Bereket, Saygın Abalı, Zehra Aycan, Şenay Savaş Erdeve, Merih Berberoğlu, Zeynep Şıklar, Meltem Tayfun, Şükran Darcan, Eda Mengen, İffet Bircan, Filiz Mine Çizmecioğlu Jones, Enver Şimşek, Esra Deniz Papatya, Mehmet Nuri Özbek, Semih Bolu, Ayhan Abacı, Muammer Büyükinan, Feyza Darendeliler
BACKGROUND: The aim of the study was to assess the response to growth hormone (GH) treatment in very young patients with GH deficiency (GHD) through a national, multi-center study. Possible factors affecting growth response were assessed (especially mini-puberty). METHODS: Medical reports of GHD patients in whom treatment was initiated between 0 and 3 years of age were retrospectively evaluated. RESULTS: The cohort numbered 67. The diagnosis age was 12...
January 20, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29351580/maternal-nutrient-restriction-impairs-young-adult-offspring-ovarian-signaling-resulting-in-reproductive-dysfunction-and-follicle-loss
#2
K A Chan, P A Jazwiec, W Gohir, J J Petrik, D M Sloboda
Reproductive abnormalities are included as health complications in offspring exposed to poor prenatal nutrition. We have previously shown in a rodent model, that offspring born to nutrient restriction during pregnancy are born small, enter puberty early, and display characteristics of early ovarian aging as adults. The present study investigated whether key proteins involved in follicle recruitment and growth mediate ovarian follicle loss. Pregnant rats were randomized to: a standard diet throughout pregnancy and lactation (CON), or a calorie-restricted (50% of control) diet (UN) during pregnancy...
January 17, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29321542/timing-of-spermarche-and-menarche-among-urban-students-in-guangzhou-china-trends-from-2005-to-2012-and-association-with-obesity
#3
Yusheng Deng, Jianping Liang, Yinan Zong, Ping Yu, Runsheng Xie, Yangfeng Guo, Zhen Wang, Nali Deng, Yanhui Gao, Yi Jiang, Yi Yang, Jiewen Yang, Li Liu
In Guangzhou, China, whether the trend of a decreasing pubertal age has continued in recent years remained unknown, and the association between obesity and early puberty was still controversial. Herein, we conducted a serial cross-sectional study using data from physical fitness surveillance (2005-2012), to determine the recent trends in age at spermarche and menarche among students in Guangzhou, and to investigate whether elevated BMI modified timing of spermarche and menarche. This study included 1,278,258 urban students...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29310614/preterm-birth-and-the-timing-of-puberty-a-systematic-review
#4
Evlyn James, Claire L Wood, Harish Nair, Thomas C Williams
BACKGROUND: An estimated 11% of births occur preterm, and survival is improving. Early studies suggested an association between preterm birth and earlier puberty. Given the adverse outcomes associated with early puberty this could have significant public health implications. The objective of this review was to assess the timing of puberty after preterm birth. METHODS: Pubmed, Embase, Popline, Global Health and Global Health Library were searched using terms relating to "premature birth", "menarche", "puberty" and "follow up studies"...
January 8, 2018: BMC Pediatrics
https://www.readbyqxmd.com/read/29300925/progesterone-mediated-inhibition-of-the-gnrh-pulse-generator-differential-sensitivity-as-a-function-of-sleep-status
#5
Su Hee Kim, Jessica A Lundgren, Ruchi Bhabhra, Jessicah S Collins, James T Patrie, Christine M Burt Solorzano, John C Marshall, Christopher R McCartney
Context: During normal early puberty, luteinizing hormone (LH) pulse frequency is low while awake but increases during sleep. Mechanisms underlying such changes are unclear, but a small study in early pubertal girls suggested that differential wake-sleep sensitivity to progesterone negative feedback plays a role. Objective: To test the hypothesis that progesterone acutely reduces waking LH pulse frequency more than sleep-associated pulse frequency in late pubertal girls...
December 28, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29282418/effect-of-vaginal-hygiene-module-to-attitudes-and-behavior-of-pathological-vaginal-discharge-prevention-among-female-adolescents-in-slemanregency-yogyakarta-indonesia
#6
Sumarah Sumarah, Hesty Widyasih
Objective: To determine the effect of vaginal hygiene module to attitudes and behavior of pathological vaginal discharge prevention in adolescent girls in Sleman Regency, Yogyakarta, Indonesia. Materials and methods: This present study is a quasi experiment with pretest and post-test control group design. A total of 80 female students was selected randomly from two secondary schools at the study site and then distributed equally to control and experimental group. Only participants in the experimental group were given self-learning vaginal hygiene module to maintain vaginal cleanliness...
June 2017: Journal of Family & Reproductive Health
https://www.readbyqxmd.com/read/29282125/food-restriction-during-pregnancy-and-female-offspring-fertility-adverse-effects-of-reprogrammed-reproductive-lifespan
#7
Abdel Halim Harrath, Abdulkarem Alrezaki, Lamjed Mansour, Saleh H Alwasel, Stefano Palomba
BACKGROUND: Food restriction during pregnancy can influence the health of the offspring during the adulthood. The aim of the present study was to examine the effect of maternal food restriction (MFR) on the reproductive performance in female rat offspring from the first (FR1) and second (FR2) generations. METHODS: Adult virgin Wistar female rats were given free access to tap water and were fed ad libitum on standard rodent chow, were mated with virgin adult males, and then were randomly divided into two groups: controls (that was fed ad libitum ) and food-restricted group (FR, that was given only 50% of ad libitum food throughout gestation)...
December 28, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29279325/when-age-based-guidance-is-not-enough-the-problem-of-early-puberty
#8
Ellen Selkie
No abstract text is available yet for this article.
December 26, 2017: Pediatrics
https://www.readbyqxmd.com/read/29279324/age-at-menarche-depression-and-antisocial-behavior-in-adulthood
#9
Jane Mendle, Rebecca M Ryan, Kirsten M P McKone
BACKGROUND: Early pubertal timing in girls is one of the best-replicated antecedents of a range of mental health problems during adolescence, but few researchers have examined the duration of these effects. METHODS: We leverage a nationally representative sample (N = 7802 women) managed prospectively from adolescence over a period of ∼14 years to examine associations of age at menarche with depressive symptoms and antisocial behaviors in adulthood. RESULTS: Earlier ages at menarche were associated with higher rates of both depressive symptoms and antisocial behaviors in early-middle adulthood largely because difficulties that started in adolescence did not attenuate over time...
December 26, 2017: Pediatrics
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/29233731/do-different-diagnostic-criteria-cause-impact-polycystic-ovary-syndrome-diagnosis-for-adolescents
#11
Sinem Akgül, Yasemin Düzçeker, Nuray Kanbur, Orhan Derman
OBJECTIVE: While early diagnosis of polycystic ovary syndrome (PCOS) in adolescents may allow for earlier treatment and prevention of chronic disorders, incorrect or premature diagnosis carries risks of unnecessary treatment and psychological distress. There is no consensus concerning which diagnostic criteria to use for adolescents and current criteria vary. The objective of this study was to determine whether using different diagnostic criteria will affect PCOS diagnosis in adolescents...
December 9, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/29218646/cardiovascular-and-metabolic-complications-diagnosis-and-management-in-obese-children
#12
REVIEW
Naval K Vikram
The world at present is facing a burden of rising prevalence of obesity in children and adolescents. The developing countries are particularly facing the dual burden on under-nutrition and obesity. This is associated with appearance and clustering of cardiometabolic abnormalities at an early age with development of chronic complications early and possible decrease in life span of these children and adolescents. In adults this clustering has been termed as 'metabolic syndrome' with definitions that can be used universally...
December 8, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29214044/milk-yield-and-kit-development-of-four-breeds-of-rabbit-in-ibadan-nigeria
#13
Olatunji Abubakar Jimoh, Emmanuel Olabisi Ewuola
Background: Rabbit breeding with high performance imported ones would be of benefit for genetic diversity and improvement of performance in domestic rabbit breeds. The rearing of more productive rabbit breeds could be pathway to improve the productivity and reduce the production cost. Maternal nutritional status exert a great influence on reproductive functions of does, which may expand from conception, through gestation and parturition and development of kits to puberty. Methods: Four breeds of rabbit were evaluated for their parturition, weaning and pubertal differences among the rabbit population in Ibadan, Nigeria...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/29213042/-new-opportunities-in-the-optimization-of-epilepsy-treatment-in-adolescents
#14
V I Guzeva, I V Okhrim, O V Guzeva, V V Guzeva, N E Maksimova
In the pubertal period, the most severe forms of childhood epilepsy persist and are modified; genetically determined syndromes, atypical for early and late age periods, make their debut. Hereditary predisposition, instability of homeostatic mechanisms, neuroendocrine restructuring at the age of puberty and the influence of factors contributing to the realization of a genetic defect lead to a long-term transformation of mediator systems and formation of epileptic activity in adolescents. The authors present common approaches in the treatment and characterization of the modern antiepileptic drug perampanel, which is highly effective in treatment of patients with resistant forms of epilepsy...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29207397/relationship-of-serum-fetuin-a-with-metabolic-and-clinical-parameters-in-german-children-and-adolescents-with-type-1-diabetes
#15
Christina Reinauer, Thomas Reinehr, Christina Baechle, Beate Karges, Julia Seyfarth, Katharina Foertsch, Martin Schebek, Joachim Woelfle, Michael Roden, Reinhard W Holl, Joachim Rosenbauer, Thomas Meissner
BACKGROUND AND AIM: The hepatokine fetuin A is upregulated in the metabolic syndrome and in type 2 diabetes (T2D), while its role in adolescent type 1 diabetes (T1D) is unclear. We assessed the relationship between circulating fetuin A levels and metabolic control, comorbidities, and complications in adolescent T1D patients. METHODS: We studied the relationship between serum fetuin A and clinical diabetes-related data from the DPV registry (Diabetes-Pa-tienten-Verlaufsdokumentation) in 172 adolescent T1D patients with early-onset (<5 years) long-standing (>10 years) T1D...
December 5, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/29201068/gender-identity-in-patients-with-congenital-adrenal-hyperplasia
#16
Maryam Razzaghy-Azar, Sakineh Karimi, Elham Shirazi
Background: Sex assignment in infancy for patients with disorder of sex development (DSD) is a challenging problem. Some of the patients with congenital adrenal hyperplasia (CAH) have DSD that may affect their gender identity. Objectives: The study aimed to assess gender identity in patients with CAH. Methods: In this study, 52 patients with CAH, including 22 prepubertal children and 30 adolescents and adults, were assessed using two separate gender identity questionnaires for children and adults based on the criteria of diagnostic and statistical manual of mental disorders, 5th edition...
July 2017: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29197496/exploring-the-links-between-early-life-and-young-adulthood-social-experiences-and-men-s-later-life-psychobiology-as-fathers
#17
Mallika S Sarma, Patty X Kuo, Sonny Agustin Bechayda, Christopher W Kuzawa, Lee T Gettler
Early life cues of environmental harshness and unpredictability have been hypothesized to influence within-species variation in the timing of life history transitions and the dynamics of reproductive strategies, such as investments in mating and parenting. It is also believed that adolesence is an influential developmental period for male reproductive strategies, with those who achieve greater social and sexual success during that period maintaining faster life history strategies into adulthood. If correct, such early life and post-pubertal experiences could also help shape the psychobiological pathways that mediate reproductive strategies, including the well documented physiological shifts that occur when some men become parents...
November 29, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29196316/restoring-serotonergic-homeostasis-in-the-lateral-hypothalamus-rescues-sleep-disturbances-induced-by-early-life-obesity
#18
M Gazea, A V Patchev, E Anderzhanova, E Leidmaa, A Pissioti, C Flachskamm, O F X Almeida, M Kimura
Early life obesity predisposes to obesity in adulthood, a condition with broad medical implications including sleep disorders; the latter can exacerbate metabolic disturbances and disrupt cognitive and affective behaviors. In this study, we examined the long-term impact of transient peripubertal diet-induced obesity (ppDIO, induced between 4 and 10 weeks of age) on sleep-wake behavior in male mice. Electroencephalographic and electromyographic recordings revealed that ppDIO increases sleep during the active phase but reduces resting-phase sleep quality...
December 1, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29194674/a-whole-genome-sequence-association-study-for-puberty-in-a-large-duroc%C3%A2-%C3%A3-%C3%A2-erhualian-f2-population
#19
W S Xin, F Zhang, G R Yan, W W Xu, S J Xiao, Z Y Zhang, L S Huang
A large proportion of gilts and sows are culled from reproduction populations because of anestrus and pubertal reproductive failure. Selecting early onset of puberty gilts has a favorable effect on sows' reproductivity. However, age at puberty is hard to be routinely measured in commercial herds. With molecular genetic predictors, identifying individuals that have a propensity for early onset of puberty can be simplified. We previously performed genome scanning and a genome-wide association study for puberty in an F2 resource population using 183 microsatellites and 62 125 SNPs respectively...
December 1, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29191579/prenatal-stress-increases-adult-vulnerability-to-cocaine-reward-without-affecting-pubertal-anxiety-or-novelty-response
#20
Verónica Pastor, María Eugenia Pallarés, Marta C Antonelli
Prenatal stress (PS) induces long-lasting molecular alterations in brain circuits of the offspring and increases the propensity to develop neuropsychiatric diseases during adulthood, including mood disorders and drug addiction. A major goal of this study was to assess the impact of PS on pubertal behaviour and adult vulnerability to cocaine-induced conditioning place preference (CPP). We therefore evaluated pubertal novelty response and anxiety-like behaviour in control (C) and PS rats, and then, we examined cocaine-induced CPP in those animals during adulthood...
November 27, 2017: Behavioural Brain Research
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