Read by QxMD icon Read

delayed puberty

Matthew J Paul, Clemens K Probst, Lauren M Brown, Geert J de Vries
Alongside the development of sexual characteristics and reproductive competence, adolescents undergo marked cognitive, social, and emotional development [1]. A fundamental question is whether these changes are triggered by activation of the hypothalamic-pituitary-gonadal (HPG) axis at puberty (puberty dependent) or whether they occur independently of HPG activation (puberty independent). Disentangling puberty-dependent from puberty-independent mechanisms is difficult because puberty and adolescence typically proceed concurrently...
March 6, 2018: Current Biology: CB
Shaji C Menon, Ragheed Al-Dulaimi, Brian W McCrindle, David J Goldberg, Ritu Sachdeva, Bryan H Goldstein, Thomas Seery, Karen C Uzark, Anjali Chelliah, Ryan Butts, Heather Henderson, Tiffanie Johnson, Richard V Williams
INTRODUCTION: We sought to evaluate the prevalence of delayed puberty and abnormal anthropometry and its association with quality of life (QoL) in young Fontan survivors. METHODS: This was a cross-sectional study at 11 Pediatric Heart Network centers. Demographic and clinical data, anthropomety, and Tanner stage were collected. Anthropometric measurements and pubertal stage were compared to US norms. QoL was assessed using Pediatric Quality of Life inventory (PedsQL)...
March 9, 2018: Congenital Heart Disease
Tabata Mariz Bohlen, Marina Augusto Silveira, Daniella do Carmo Buonfiglio, Hildebrando Candido Ferreira-Neto, José Cipolla-Neto, Jose Donato, Renata Frazao
The reproduction of seasonal breeders is modulated by exposure to light in an interval of 24 h defined as photoperiod. The interruption of reproductive functions in seasonally breeding rodents is accompanied by the suppression of the Kiss1 gene expression, which is known to be essential for reproduction. In non-seasonal male rodents, such as rats and mice, short-day photoperiod (SP) conditions or exogenous melatonin treatment also have anti-gonadotropic effects; however, whether photoperiod is able to modulate the puberty onset or Kiss1 gene expression in mice is unknown...
2018: Frontiers in Endocrinology
Tom C Zwart, Marcel G Smits, Toine C G Egberts, Carin M A Rademaker, Ingeborg M van Geijlswijk
The extent of continuance of melatonin therapy initiated in pre-pubertal children with chronic sleep onset insomnia (CSOI) was investigated in young adult life. Sleep timing, sleep quality, adverse events, reasons for cessation of therapy, and patient characteristics with regard to therapy regimen, chronotype and lifestyle factors possibly influencing sleeping behavior were assessed. With an online survey using questionnaires (Pittsburgh Sleep Quality Index, Insomnia Severity Index, Morningness-Eveningness Questionnaire, and Munich Chronotype Questionnaire), outcomes were measured and compared with age-related controls...
March 2, 2018: Healthcare (Basel, Switzerland)
Fatemeh Bagheripuor, Mahboubeh Ghanbari, Abass Piryaei, Asghar Ghasemi
NEW FINDINGS: What is the central question of this study? Does fetal hypothyroidism in rats alter uterine contractions and structure in the adult offspring? What is the main finding and its importance? Our study indicated that maternal hypothyroidism during pregnancy increased gestational length and decreased litter size as well as delayed puberty onset; in addition, maternal hypothyroidism caused irregular uterine contractions and histological changes in the uterus in the female offspring...
February 27, 2018: Experimental Physiology
Nirupama Bonthala, Sunanda Kane
PURPOSE OF REVIEW: Inflammatory bowel disease affects approximately 800,000 women in the USA with the peak incidence between ages 15 to 40. Thus for many females, IBD can impact nearly every stage of their life from menarche to pregnancy, menopause, and beyond. This paper will review the most recent updates on the topics of sexual health, cervical cancer screening, menstruation, fertility, contraception, and menopause. RECENT FINDINGS: Menarche can be delayed in females especially those who are underweight, malnourished, or with active inflammatory bowel disease...
February 26, 2018: Current Treatment Options in Gastroenterology
Mariela Faykoo-Martinez, D Ashley Monks, Iva B Zovkic, Melissa M Holmes
The social environment can alter pubertal timing through neuroendocrine mechanisms that are not fully understood; it is thought that stress hormones (e.g., glucocorticoids or corticotropin-releasing hormone) influence the hypothalamic-pituitary-gonadal axis to inhibit puberty. Here, we use the eusocial naked mole-rat, a unique species in which social interactions in a colony (i.e. dominance of a breeding female) suppress puberty in subordinate animals. Removing subordinate naked mole-rats from this social context initiates puberty, allowing for experimental control of pubertal timing...
2018: PloS One
Aneta Monika Gawlik, Magdalena Hankus, Kamila Szeliga, Aleksandra Antosz, Tomasz Gawlik, Kamil Soltysik, Agnieszka Drosdzol-Cop, Krzysztof Wilk, Grzegorz Kudela, Tomasz Koszutski, Ewa Malecka-Tendera
Objective: Estrogen replacement therapy (ERT) for Turner syndrome (TS) is a widely discussed topic; however, the optimal model of ERT for patients with delayed diagnosis and/or initiation of therapy is still unclear, mainly due to insufficient data. We present the results of a prospective observational single-center study in which the efficacy of late-onset puberty induction by one-regimen transdermal ERT in TS girls was evaluated. Methods: The analysis encompassed 49 TS girls (63...
2018: Frontiers in Endocrinology
Annette Korsholm Mouritsen, Alexander Siegfried Busch, Lise Aksglaede, Ewa Rajpert-De Meyts, Anders Juul
OBJECTIVE: Only a few genetic loci are known to be associated with male pubertal events. The ability of excreting testosterone (T) and other steroids in the urine depends on sulfation and glucuronidation. One of several essential glucuronidases is encoded by the UGT2B17 gene. In a preliminary report, we found that homozygous deletion of UGT2B17 in boys was associated with lower urinary excretion of T. We hypothesized that boys with a lower glucuronidation capacity may have altered androgen action and excretion affecting pubarche, as this represents a T dependent event...
February 21, 2018: Endocrine Connections
Elina Holopainen, Svetlana Vakkilainen, Outi Mäkitie
BACKGROUND: Cartilage-hair hypoplasia (CHH) is a rare chondrodysplasia, including disproportionate short stature, hypoplastic hair, immunodeficiency and increased risk of malignancies. Absent pubertal growth spurt and absent pubic hair complicate monitoring of pubertal development in these patients. CASES: Two CHH patients with delayed puberty and excessive growth failure are described. One of the girls had hypogonadotropic hypogonadism while the other had hypo-normogonadotropic hypogonadism with no spontaneous pubertal development and slow response to estrogen therapy, both requiring permanent replacement therapy...
February 17, 2018: Journal of Pediatric and Adolescent Gynecology
Farzaneh Rohani, Mohammad Reza Alai, Sedighe Moradi, Davood Amir Kashani
BACKGROUND: This study was conducted to find out whether boys with Constitutional delay in growth and puberty (CDGP) could attain their target height and predicted adult height (PAH) in adulthood or not. METHODS: After measuring the height, weight, pubertal stage, parental height and bone age data of the patients at their first presentation were extracted from the files and their height and weight were measured at the end of the study, wrist X-Ray was performed in order to determine the bone age...
February 19, 2018: Endocrine Connections
Vincenzo De Sanctis, Ashraf T Soliman, Mohamed A Yassin, Salvatore Di Maio, Shahina Daar, Heba Elsedfy, Nada Soliman, Christos Kattamis
Failure of pubertal growth, delay or absence of sexual development, infertility and sexual dysfunction due to hypogonadism and defective spermatogenesis are frequent and well recognized disturbances among male patients with transfusion dependent (TD) thalassaemia major (β-thal). These problems are attributed mainly to the damage caused by chronic anaemia and the deposition of excess iron in the pituitary gland and testicles. This is a short review of male pubertal disorders in patients with β-thal written by pediatric endocrinologists and haematologists with an interest and active involvement, in the diagnosis and management of these complications in this group of patients...
February 16, 2018: Acta Bio-medica: Atenei Parmensis
Yuan Wei, Li Yang, Xiaoyan Zhang, Danjuan Sui, Changsuo Wang, Kai Wang, Mangting Shan, Dayong Guo, Hongyu Wang
CYP2C11 is involved in the metabolism of many drugs in rats. To assess the roles of CYP2C11 in physiology and drug metabolism, a CYP2C11-null rat model was generated using the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 method. A 2-bp insertion was added to exon 6 of CYP2C11 in Sprague-Dawley rats. CYP2C11 was not detected by Western blotting in liver microsomes of CYP2C11-null rats. No off-target effects were found at eleven predicted sites of the knockout model. The CYP2C11-null rats were viable and had no obvious abnormalities, with the exception of reduced fertility...
February 14, 2018: Drug Metabolism and Disposition: the Biological Fate of Chemicals
Karen O Klein, Robert Rosenfield, Richard J Santen, Aneta Gawlik, Philippe Backeljauw, Claus H Gravholt, Theo Sas, Nelly Mauras
Context: Most girls with Turner Syndrome have hypergonadotropic hypogonadism and need hormonal replacement - for induction of puberty and later maintaining secondary sex characteristics, attaining peak bone mass, and uterine growth. The optimal estrogen replacement regimen is still being studied. Evidence Acquisition: We conducted a systematic search of PubMed for research related to TS and puberty, including key words: estrogen, growth, puberty. Evidence Synthesis: The goals of replacement are to mimic normal timing and progression of physical and social development while minimizing risks...
February 8, 2018: Journal of Clinical Endocrinology and Metabolism
Paige L Williams, Julie Jesson
PURPOSE OF REVIEW: We present an overview of recent research in the inter-related areas of growth and pubertal development among adolescents with HIV. Growth deficits early in childhood can lead to delayed puberty, with subsequent effects on pubertal growth spurts and bone health. RECENT FINDINGS: Impaired growth remains a critical concern, particularly in low-resource settings, where stunting, wasting and underweight remain pervasive. Antiretroviral treatment (ART) initiation results in improved growth, with greatest growth recovery in the first years and more improvement in weight than in height...
February 9, 2018: Current Opinion in HIV and AIDS
(no author information available yet)
No abstract text is available yet for this article.
November 1, 2017: American Family Physician
Y Ganie, C Aldous, Y Balakrishna, R Wiersma
BACKGROUND: Congenital adrenal hyperplasia (CAH) caused by deficiency of the 21-hydoxylase (21-OH) enzyme is the most common form of CAH worldwide. OBJECTIVE: To evaluate the prevalence of CAH due to 21-OH deficiency, and its clinical presentation and biochemical profiles in affected children. METHODS: We performed a retrospective subset analysis of 44 children with confirmed CAH. RESULTS: All the children had classic CAH...
February 1, 2018: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
Takeshi Yamaguchi, Tomoyuki Hothubo, Shuntaro Morikawa, Akie Nakamura, Toshihiko Mori, Toshihiro Tajima
BACKGROUND: IGSF1 abnormality causes diverse symptoms, including congenital central hypothyroidism (CCH), prolactin hyposecretion, testicular enlargement and delayed puberty. CASE PRESENTATION: Here, we report a case of a male patient who visited our hospital with a chief complaint of abdominal pain and short stature, in whom we identified a novel IGSF1 mutation. He was closely examined because of chronic constipation since infancy, persistent abdominal pain at 14 years of age and marked short stature (-4...
February 9, 2018: Journal of Pediatric Endocrinology & Metabolism: JPEM
Charles Sultan, Laura Gaspari, Laurent Maimoun, Nicolas Kalfa, Françoise Paris
Over the past 20 years, a clear secular trend toward the earlier onset of puberty has been described. A better knowledge should help clinicians attempting to define both precocious and delayed puberty (PP and DP, respectively). The definition of PP for girls is the appearance of secondary sex characteristics development before the age of 8 years, while DP is based on the absence of thelarche at the age of 13 years. Regarding PP, one should clinically distinguish between true precocious puberty, i.e., complete or central PP, and incomplete PP, which refers to premature thelarche, premature pubarche, and isolated menarche...
November 14, 2017: Best Practice & Research. Clinical Obstetrics & Gynaecology
Daniele Cassatella, Sasha Howard, James Acierno, Cheng Xu, Georgios Papadakis, Federico A Santoni, Andrew A Dwyer, Sara Santini, Gerasimos Sykiotis, Caroline Chambion, Jenny Meylan, Laura Marino, Lucie Favre, Jiankang Li, Xuanzhu Liu, Jian-Guo Zhang, Pierre Bouloux, Christian De Geyter, Anne De Paepe, Waljit S Dhillo, Jean-Marc Ferrara, Michael Hauschild, Mariarosaria Lang-Muritano, Johannes Lemke, Christa E Flück, Attila Nemeth, Franziska Phan-Hug, Duarte Pignatelli, Vera Popovic, Sandra Pekic, Richard Quinton, Gabor Szinnai, Dagmar l'Allemand, Daniel Konrad, Saba Sharif, Özlem Turhan Iyidir, Brian J Stevenson, Huanming Yang, Leo Dunkel, Nelly Pitteloud
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 with CHH, while the genetic basis of CDGP is poorly understood. DESIGN: We characterized and compared the genetic architectures of CHH and CDGP, to test the hypothesis of a shared genetic basis between these disorders...
February 1, 2018: European Journal of Endocrinology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"