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https://www.readbyqxmd.com/read/28521848/impacts-of-stocking-density-on-development-and-puberty-attainment-of-replacement-beef-heifers
#1
K M Schubach, R F Cooke, A P Brandão, K D Lippolis, L G T Silva, R S Marques, D W Bohnert
In all, 60 Angus×Hereford heifers were ranked by age and BW (210±2 days and 220±2 kg) on day 0, and assigned to: (a) one of three drylot pens (10×14 m pens; 10 heifers/pen) resulting in a stocking density of 14 m2/heifer (HIDENS; n=3), or (b) one of three pastures (25 ha pastures; 10 heifers/pasture), resulting in a stocking density of 25 000 m2/heifer (LOWDENS; n=3). Pastures were harvested for hay before the beginning of this experiment, and negligible forage was available for grazing to LOWDENS heifers during the experiment (days 0 to 182)...
May 19, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28514243/celiac-disease-symptom-resolution-effectiveness-of-the-gluten-free-diet
#2
Naire Sansotta, Stefano Guandalini, Karine Amirikian, Hilary Jericho
OBJECTIVE: To evaluate the efficacy of the gluten free diet (GFD) on gastrointestinal and extra-intestinal symptom resolution and identify predictors for persistence of symptoms in all celiac patients at the University of Chicago. METHODS: We conducted a retrospective chart review from 2002 to 2015. Gastrointestinal (GI) symptoms included: abdominal pain, bloating, constipation, diarrhea, failure to thrive/weight loss, nausea, reflux and vomiting. Extra-intestinal (EI) symptoms included: abnormal liver enzymes, arthralgia/arthritis, dermatitis herpetiformis, alopecia, fatigue, headache, anemia, stomatitis, myalgia, psychiatric disorders, rashes, seizures, neuropathy, short stature, delayed puberty, osteoporosis, and infertility...
May 16, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28513071/juvenile-idiopathic-arthritis-in-multiplex-families-longitudinal-follow-up
#3
Munira Al Marri, Alya Qari, Sulaiman M Al-Mayouf
OBJECTIVE: To describe the physical, social, educational and employment status and clinical outcomes of patients with juvenile idiopathic arthritis (JIA) from multiplex families. METHODS: All familial JIA patients were treated and had regular follow-up between 1990 and 2015 at King Faisal Specialist Hospital and Research Center (KFSH-RC), Riyadh, were included. Demographic data, disease duration, active arthritis and articular and extra-articular damage at last follow-up visit were reviewed...
May 16, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28506340/-endocrine-and-metabolic-features-of-female-children-with-prader-willi-syndrome-an-analysis-of-4-cases
#4
Mo-Ling Wu, Juan Li, Yu Ding, Yao Chen, Guo-Ying Chang, Xiu-Min Wang, Jian Wang, Yi-Ping Shen
This article reports the clinical features and endocrine and metabolic features of 4 children with Prader-Willi syndrome (PWS). All the patients were female and aged 6-12 years at diagnosis. All of them had clinical manifestations of obesity, unusual facies, developmental retardation, and intellectual disability. Genetic detection showed that 2 patients had paternal deletion of the 15q11.2-q13 region, one patient had maternal autodiploid in the 15q11.2-q13 region, and one patient had no abnormality in the 15q11...
May 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28502828/premature-ovarian-insufficiency-an-adolescent-series
#5
Kallirroi Chaloutsou, Pantelis Aggelidis, Andreas Pampanos, Eleni Theochari, Lina Michala
STUDY OBJECTIVE: To study the presentation and causes of premature ovarian insufficiency (POI) in adolescents DESIGN: Retrospective notes review SETTING: Tertiary Referral Outpatient clinic for Pediatric and Adolescent Gynecology PARTICIPANTS: Adolescents with POI INTERVENTIONS: Standard POI evaluation MAIN OUTCOME MEASURES: Age and clinical symptoms at presentation, causative factor for POI, if identified. RESULTS: We identified 22 girls with POI, with a mean age of 15...
May 11, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28501545/betamethasone-causes-intergenerational-reproductive-impairment-in-male-rats
#6
Cibele Dos Santos Borges, Taina Louise Pacheco, Katiussia Pinho da Silva, Fábio Henrique Fernandes, Mary Gregory, André Sampaio Pupo, Daisy Maria F Salvadori, Daniel G Cyr, Wilma De G Kempinas
Prenatal betamethasone (BM) exposure in rats negatively impacts sperm quality and male fertility. Studies have shown that BM can cause multi-generational effects on the pituitary-adrenal-axis of rats. The objective of this study was to assess the reproductive development and fertility of male rats (F2) whose fathers (F1) were exposed to BM (0.1mg/kg) on gestational days 12, 13, 18 and 19. In F2 rats, there was a significant reduction in body weights of the BM-treated group at PND 1 as well as delayed onset of puberty, and decreases in FSH levels, Leydig cell volume, sperm number and motility, seminal vesicle contractility and ejaculated volume...
May 10, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28501319/association-of-pyrethroids-exposure-with-onset-of-puberty-in-chinese-girls
#7
Xiaoqing Ye, Wuye Pan, Yuehao Zhao, Shilin Zhao, Yimin Zhu, Weiping Liu, Jing Liu
Pyrethroids, a class of ubiquitous insecticides, have been considered as endocrine-disrupting chemicals (EDCs). Female animal studies suggested that early-life pyrethroids exposure might delay puberty onset. However, it remains unclear whether this association applies to human populations. A total of 305 girls at the ages of 9-15 years old were recruited in Hangzhou, China in this study. The concentration of the common metabolite of pyrethroids, 3-phenoxybenzoic acid (3-PBA), was analyzed in urine samples to reflect the exposure level of pyrethroids...
May 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28496331/clinical-and-genetic-characteristics-in-a-group-of-45-patients-with-turner-syndrome-monocentric-study
#8
Simona Bucerzan, Diana Miclea, Radu Popp, Camelia Alkhzouz, Cecilia Lazea, Ioan Victor Pop, Paula Grigorescu-Sido
INTRODUCTION: Recent years have seen a shift in perspective on Turner syndrome, as it is no longer considered a significant disability due to therapeutic advances. The delay of diagnosis and the underdiagnosis are common in Turner syndrome, especially because of the great phenotypic variability and lack of firm diagnostic criteria. AIM: Our first aim was to assess the clinical and the cytogenetic characteristics and growth rate in growth hormone (GH)-treated patients as compared to those with spontaneous growth...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28486374/premature-thelarche-and-the-pura-syndrome
#9
Joshua Rezkalla, Tiffany Von Wald, Keith A Hansen
BACKGROUND: Premature thelarche is a self-limited condition characterized by Tanner stage II-III breast development in girls younger than 8 years of age with no evidence of advancing puberty. Evaluation concentrates on excluding central or peripheral causes of precocious puberty. CASE: A girl aged 2 years 4 months with profound hypotonia and delayed developmental milestones presented with Tanner II breast development, elevated follicle-stimulating hormone levels, suppressed luteinizing hormone level, normal growth and skeletal development, and prepubertal uterine length and ovarian volume...
May 5, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28483364/how-to-investigate-a-child-with-excessive-growth
#10
Régis Coutant, Aurélie Donzeau, Anne Decrequy, Mathilde Louvigné, Natacha Bouhours-Nouet
The diagnostic approach to tall stature in children is based on collecting birth data (macrosomia), sizes and family puberty, a family history of constitutional or pathological tall stature, search for a delay of development, dysmorphia, disproportion, analysis of the growth velocity (normal or accelerated), general examination and assessment of puberty, and bone age. When there is a history of psychomotor retardation, a family history of pathological tall stature, or a disproportion in the clinical examination, the genetic causes of tall stature will be mentioned...
May 5, 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28471223/social-stress-in-early-puberty-has-long-term-impacts-on-impulsive-action
#11
Lina Fernanda González-Martínez, John D'Aigle, Steven M Lee, Hongjoo J Lee, Yvon Delville
In hamsters, individuals attacked by adults during puberty become aggressive adults. Perhaps, enhanced aggression observed as repeated attacks toward opponents is associated with a lack of impulse control. We examined impulsive action in male golden hamsters exposed daily to aggressive adults from postnatal Day 28 to 42. These animals were trained in conditioning chambers and tested during adulthood in a go-no-go task addressing action inhibition. Overall, previously stressed hamsters were less likely to inhibit a conditioned lever pressing response during no-go trials...
May 4, 2017: Behavioral Neuroscience
https://www.readbyqxmd.com/read/28467344/growth-and-growth-hormone-insulin-like-growth-factor-i-gh-igf-i-axis-in-chronic-anemias
#12
Ashraf T Soliman, Vincenzo De Sanctis, Mohamed Yassin, Ashraf Adel
Anaemia is a global public health problem affecting both developing and developed countries with major consequences for human health as well as social and economic development. It occurs at all stages of the life cycle, but is more prevalent in pregnant women and young children. Iron deficiency anaemia (IDA) was considered to be among the most important contributing factors to the global burden of disease. Prolonged and/or chronic anemia has a negative effect on linear growth especially during the rapid phases (infancy and puberty)...
April 28, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28464910/intracerebroventricular-injection-of-rfrp-3-delays-puberty-onset-and-stimulates-growth-hormone-secretion-in-female-rats
#13
Xinghui Han, Yuanyuan He, Gulan Zeng, Yonghong Wang, Wen Sun, Junchao Liu, Yanyan Sun, Jian Yu
BACKGROUND: Puberty onset is a complex, organized biological process with multilevel regulation, and its physiopathological mechanisms are yet to be elucidated. RFRP-3, the mammalian ortholog to gonadotropin-inhibitory hormone, is implicated in inhibiting the synthesis and release of gonadotropin in mammals. However, it is unclear whether RFRP-3 participates in regulating pubertal development. METHODS: This study investigated the functional significance and regulatory mechanism of hypothalamic RFRP-3 neuropeptide in the onset of puberty in young female rats...
May 2, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28464352/maternal-experience-raising-girls-with-autism-spectrum-disorder-a-qualitative-study
#14
N Navot, A G Jorgenson, S J Webb
BACKGROUND: A growing line of research has sought to characterize the different presentations of autism spectrum disorder (ASD) among boys and girls. Much less is known about maternal experience and mother-child relationship in children with ASD based on child gender. The present qualitative study aimed to investigate the mother-daughter relationship from the perspective of mothers who are raising girls with ASD with normal intelligence and functional verbal communication. METHODS: Eleven in-depth interviews were conducted with mothers of girls with ASD, ages 10-19 years...
May 2, 2017: Child: Care, Health and Development
https://www.readbyqxmd.com/read/28458905/silent-crooke-s-cell-corticotroph-adenoma-of-the-pituitary-gland-presenting-as-delayed-puberty
#15
Dinesh Giri, Federico Roncaroli, Ajay Sinha, Mohammed Didi, Senthil Senniappan
SUMMARY: Corticotroph adenomas are extremely rare in children and adolescents. We present a 15-year-old boy who was investigated for delayed puberty (A1P2G1, bilateral testicular volumes of 3 mL each). There was no clinical or laboratory evidence suggestive of chronic illness, and the initial clinical impression was constitutional delay in puberty. Subsequently, MRI scan of the brain revealed the presence of a mixed cystic and solid pituitary lesion slightly displacing the optic chiasma...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28458458/evaluation-of-growth-hormone-treatment-efficacy-in-short-japanese-children-born-small-for-gestational-age-five-year-treatment-outcome-and-impact-on-puberty
#16
Reiko Horikawa, Toshiaki Tanaka, Hiromi Nishinaga, Yoshihisa Ogawa, Susumu Yokoya
Some children born small for gestational age (SGA) have short stature and are at an increased risk of developing psychosocial or behavioral problems. Here we evaluated the efficacy of GH and its effects on the timing of pubertal onset in a 3-yr extension of our previous 2-yr (total 5 yr) multicenter, randomized, double-blind, parallel-group clinical trial of 65 short Japanese children born SGA. Patients received low or high doses of GH (0.033 or 0.067 mg/kg/day, respectively). Age at onset of puberty was not statistically different for male and female patients receiving high- or low-dose GH...
2017: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
https://www.readbyqxmd.com/read/28457480/how-should-we-investigate-children-with-growth-failure
#17
Juliane Léger
The early diagnosis of short stature is essential for effective management and treatment. Investigations for children with growth failure are required to distinguish between idiopathic short stature due to physiological variants (familial short stature, and constitutional delays of growth and puberty, or both), primary causes of short stature, such as syndromic and/or genetic defects and skeletal dysplasia, and secondary growth deficits due to endocrine or other chronic disorders such as celiac disease, Crohn's disease, malnutrition, renal, anorexia nervosa or other chronic diseases...
April 27, 2017: Annales D'endocrinologie
https://www.readbyqxmd.com/read/28455701/chronic-rem-sleep-restriction-in-juvenile-male-rats-induces-anxiety-like-behavior-and-alters-monoamine-systems-in-the-amygdala-and-hippocampus
#18
Janaína da Silva Rocha-Lopes, Ricardo Borges Machado, Deborah Suchecki
Adolescence is marked by major physiological changes, including those in the sleep-wake cycle, such as phase delay, which may result in reduced sleep hours. Sleep restriction and/or deprivation in adult rats activate stress response and seem to be a risk factor for triggering emotional disorders. In the present study, we sought to evaluate the behavioral and neurobiological consequences of prolonged REM sleep restriction in juvenile male rats. Immediately after weaning, on postnatal day 21, three males from each litter were submitted to REM sleep deprivation and the other three animals were maintained in their home-cages...
April 28, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28450956/vanwyk-grumbach-syndrome-in-a-male-pediatric-patient-a-rare-case-report-and-literature-review
#19
Shanshan Zhang, Jingyan Yang, Rongxiu Zheng, Lihong Jiang, Ying Wei, Geli Liu
Primary hypothyroidism usually leads to retardation of linear growth and delay or even arrest of puberty in juvenile patients. In rare cases, pediatric patients with hypothyroidism may present with signs of VanWyk-Grumbach's syndrome (VWGS), which includes juvenile hypothyroidism, delayed bone age and pseudoprecocious puberty. The present study reported on a rare case of VWGS and other complications, including obesity, short stature, hepatomegaly and pituitary hyperplasia. In addition, a comprehensive literature review was performed to illustrate the treatment and outcome of VWGS in pediatric patients...
March 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28444173/tac1-signaling-is-required-for-sexual-maturation-and-responsiveness-of-gnrh-neurons-to-kisspeptin-in-the-male-mouse
#20
Caroline A Maguire, Yong Bhum Song, Min Wu, Silvia León, Rona S Carroll, Meenakshi Alreja, Ursula B Kaiser, Víctor M Navarro
The tachykinins substance P (SP) and neurokinin A (NKA) (Tac1) have emerged as novel regulators of kisspeptin/GnRH release. Recently, we documented that SP modulates reproductive function in the female mouse. Here, we extended this characterization to the male mouse. Tac1-/- male mice showed delayed puberty onset. They also presented significantly decreased expression levels of Pdyn (dynorphin) and Nos1 (nitric oxide synthase) in the mediobasal hypothalamus and elevated Gnrh1 levels. Unexpectedly, the response of Tac1-/- mice to central kisspeptin or senktide (neurokinin B receptor -NK3R- agonist) administration was significantly decreased compared with controls, despite the preserved ability of GnRH neurons to stimulate LH release as demonstrated by central NMDA administration, suggesting a deficit at the GnRH neuron level...
April 21, 2017: Endocrinology
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