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https://www.readbyqxmd.com/read/27908562/ontogeny-of-sensorimotor-gating-and-short-term-memory-processing-throughout-the-adolescent-period-in-rats
#1
Anja A Goepfrich, Chris M Friemel, Sabina Pauen, Miriam Schneider
Adolescence and puberty are highly susceptible developmental periods during which the neuronal organization and maturation of the brain is completed. The endocannabinoid (eCB) system, which is well known to modulate cognitive processing, undergoes profound and transient developmental changes during adolescence. With the present study we were aiming to examine the ontogeny of cognitive skills throughout adolescence in male rats and clarify the potential modulatory role of CB1 receptor signalling. Cognitive skills were assessed repeatedly every 10th day in rats throughout adolescence...
November 19, 2016: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/27906711/polycystic-ovary-syndrome-in-adolescent-girls
#2
Natalie Hecht Baldauff, Selma Feldman Witchel
PURPOSE OF REVIEW: Polycystic ovary syndrome (PCOS) is a common heterogeneous disorder that appears to have its origins during the peripubertal years. The diagnostic conundrum is that the typical clinical features, irregular menses and acne, occur during normal female puberty. Understanding the physiologic origins and molecular basis of the dysregulated hypothalamic-pituitary-gonadal axis in PCOS is fundamental to interrupting the distinctive vicious cycle of hyperandrogenism and chronic anovulation...
November 30, 2016: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/27905645/-morbidity-profile-among-adolescents-with-down-syndrome
#3
Antonia Cárdenas, María A Paul, Catalina Correa, Sebastián Valderrama, Jaime Cerda, Macarena Lizama
BACKGROUND: There is a paucity of information about morbidity and mortality of adolescents with Down syndrome (DS). AIM: To describe morbidity and mortality of a cohort of Chilean adolescents with DS. MATERIAL AND METHODS: Review of electronic clinical records of 67 ambulatory patients with DS aged 10 to 20 years (37 women), seen between the years 2007 and 2014 in outpatient clinics of a University hospital. RESULTS: The mean age at the last consultation was 13 ± 3 years...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27905040/morphofunctional-changes-in-the-thyroid-gland-of-pubertal-and-postpubertal-rats-exposed-to-low-dose-of-ddt
#4
N V Yaglova, Yu P Sledneva, V V Yaglov
Consumption of low dose DDT from birth until puberty suppressed functional activity of the thyroid gland in rats and leads to destructive changes in the organ during the postpubertal period with compensatory stimulation of secretory activity of thyrocytes aimed at normalization of thyroxin production.
December 1, 2016: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27903360/-update-on-pubertal-development-among-primary-school-students-in-shanghai-2014
#5
Y Chen, Y T Zhang, C Chen, Y R Jiang, Y J Song, S J Liu, F Jiang
Objective: To investigate the current prevalence of pubertal development in healthy Shanghai schoolchildren. Methods: This study was a cross-sectional investigation focused on current pubertal development conducted in healthy Shanghai schoolchildren by multi-stage cluster sampling. The sample included 17 571 children in grades 1-5 investigated in June 2014. The data were weighted by inverse probability weighting (IPW) to make them more representative. At examination, stages of breast and pubic hair development were rated according to the Tanner method...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27902543/associations-of-anthropometric-behavioral-and-social-factors-on-level-of-body-esteem-in-peripubertal-girls
#6
Elizabeth A Szamreta, Bo Qin, Pamela A Ohman-Strickland, Katie A Devine, Jerod L Stapleton, Jeanne M Ferrante, Elisa V Bandera
OBJECTIVE: Lower body esteem may decrease self-esteem and lead to adverse health effects in children. This study explored the role of anthropometric, behavioral, and social factors on body esteem in peripubertal girls. METHOD: We evaluated associations of body esteem (measured by the Revised Body Esteem Scale) with body mass index (BMI), mother's BMI, puberty, physical activity, role models for appearance, and screen time among girls (ages 9 and 10) participating in the Jersey Girl Study (n = 120)...
November 23, 2016: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/27900926/-corneal-cross-linking-as-a-treatment-for-progressive-keratoconus
#7
R P L Wisse, N Soeters, D A Godefrooij, N G de Koning-Tahzib
Keratoconus is a corneal disease with onset typically occurring during puberty or early adulthood. The cornea progressively thins and acquires a cone-like shape which negatively affects visual acuity. In the early stages, visual acuity can be corrected with glasses or contact lenses. In more advanced cases, a corneal transplant is ultimately indicated to restore visual acuity. Corneal cross-linking (CXL) is a treatment given at a relatively early stage that protects patients against deterioration of visual acuity and further corneal deformation in progressive cases of keratoconus...
2016: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/27898944/life-cycle-efficiency-of-beef-production-viii-relationship-between-residual-feed-intake-of-heifers-and-subsequent-cow-efficiency-ratios
#8
M E Davis, P A Lancaster, J J Rutledge, L V Cundiff
Data were collected from 1953 through 1980 from identical and fraternal twin beef and dairy females born in 1953, 1954, 1959, 1964, and 1969, and from crossbred females born as singles in 1974, and their progeny. Numbers of dams that weaned at least 1 calf and were included in the first analysis were 37, 45, and 56 in the 1964, 1969, and 1974 data sets, respectively. Respective numbers of dams that weaned 3 calves and were included in a second analysis were 6, 8, 8, 22, 33, and 33 in the 1953, 1954, 1959, 1964, 1969, and 1974 experiments...
November 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898911/estimation-of-the-effects-of-selection-on-french-large-white-reproductive-performance-using-frozen-semen
#9
P Silalahi, T Tribout, A Prunier, Y Billon, J Gogué, J P Bidanel
Genetic trends for male and female sexual development and components of litter size and weight at birth (LB) as well as traits related to sow lifetime productivity were estimated in a French Large White (LW) pig population using frozen semen. Two experimental groups (EXP = L77 and L98) were produced by inseminating LW sows with either stored frozen semen from 17 LW boars born in 1977 (EXP = L77) or with semen from 23 LW boars born in 1998 (EXP = L98). In each group, about 100 males were measured for testicular development and bulbo-urethral gland development, and 90 gilts were checked for puberty, among which about 50 gilts were measured for their first ovulation rate at puberty (ORP)...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898892/transcriptome-analyses-identify-five-transcription-factors-differentially-expressed-in-the-hypothalamus-of-post-versus-prepubertal-brahman-heifers
#10
M R S Fortes, L T Nguyen, M M D C A Weller, A Cánovas, A Islas-Trejo, L R Porto-Neto, A Reverter, S A Lehnert, G B Boe-Hansen, M G Thomas, J F Medrano, S S Moore
Puberty onset is a developmental process influenced by genetic determinants, environment, and nutrition. Mutations and regulatory gene networks constitute the molecular basis for the genetic determinants of puberty onset. The emerging knowledge of these genetic determinants presents opportunities for innovation in the breeding of early pubertal cattle. This paper presents new data on hypothalamic gene expression related to puberty in (Brahman) in age- and weight-matched heifers. Six postpubertal heifers were compared with 6 prepubertal heifers using whole-genome RNA sequencing methodology for quantification of global gene expression in the hypothalamus...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27897463/a-qualitative-analysis-of-factors-related-to-eating-disorder-onset-in-female-collegiate-athletes-and-non-athletes
#11
Jessyca Arthur-Cameselle, Kayla Sossin, Paula Quatromoni
Female athletes are at risk for clinical eating disorders, yet their onset experiences have rarely been studied with qualitative methods. This study, which included interviews with 12 collegiate female athletes and 17 non-athletes, identified factors that contributed to eating disorder onset for both subgroups. Inductive content analysis revealed that low self-worth, peer issues, and comorbid psychological disorders were common in both groups. However, athletes reported sport-specific factors including performance pressure, team weigh-ins, and injuries, whereas family dysfunction, bullying, and puberty were more commonly reported triggers for non-athletes...
November 29, 2016: Eating Disorders
https://www.readbyqxmd.com/read/27897024/-peripheral-precocious-puberty
#12
J Zvonařová Skalická, R Pilka
OBJECTIVE: To summarize literature data on peripheral precocious puberty. DESIGN: A literature review. SETTING: Středomoravská nemocniční a.s., hospital Šternberk, Department of Obstetrics and Gynaecology, University Hospital, Medical Faculty, Palacky University, Olomouc. METHODS AND RESULTS: We searched in PubMed using the key words stated below according to date and published since 1980.Peripheral precocious puberty occurs in girls with the frequency 1:400-1000...
2016: Ceská Gynekologie
https://www.readbyqxmd.com/read/27893173/bmp15l-figla-smc1bl-and-larp6l-are-preferentially-expressed-in-germ-cells-in-atlantic-salmon-salmo-salar-l
#13
Lene Kleppe, Rolf Brudvik Edvardsen, Tomasz Furmanek, Eva Andersson, Amélie Juanchich, Anna Wargelius
Atlantic salmon is a valuable commercial aquaculture species that would benefit economically and environmentally by controlling precocious puberty and preventing escapees from reproducing with wild populations. One solution to both these challenges is the production of sterile individuals by inhibiting the formation of germ cells, but achieving this requires more information on the specific factors that control germ cell formation. Here, we identified and characterized novel factors that are preferentially expressed in Atlantic salmon germ cells by screening for gonad-specific genes using available adult multi-tissue transcriptomes...
November 7, 2016: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/27890604/gender-dimorphism-in-pediatric-osa-is-it-for-real
#14
REVIEW
Pablo E Brockmann, Dorit Koren, Leila Kheirandish-Gozal, David Gozal
In epidemiologic studies focused on adults, obstructive sleep apnea (OSA) has higher prevalence in men than in women. The evidence supporting a gender-related discrepant prevalence of OSA is however much more tenuous in children. Here, we aimed to review the evidence concerning gender- based differences in the prevalence of OSA in children, and if so, to examine the evidence with the intent to identify potential factors that may account for this putative association. Gender-based perception and reporting of clinical manifestations of OSA may be modulated by several social and cultural factors in children...
November 23, 2016: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/27889732/distal-renal-tubular-acidosis-associated-with-celiac-disease-and-thyroiditis
#15
Amit Kumar Satapathy, Sapna Mittal, Vandana Jain
BACKGROUND: Association of distal renal tubular acidosis (RTA) with autoimmune diseases is extremely rare in children. CASE CHARACTERISTICS: 12-year-old girl with distal RTA. Despite resolution of acidosis on bicarbonate, she continued to have poor growth and delayed puberty. Investigations revealed autoimmune thyroiditis and celiac disease. OUTCOME: Levothyroxine and gluten-free diet were initiated. Child gained height and weight and had onset of puberty after gluten withdrawal...
November 15, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27889728/pediatric-inflammatory-bowel-disease
#16
Akshay Kapoor, Vidyut Bhatia, Anupam Sibal
Background: The incidence of inflammatory bowel disease is increasing in the pediatric population worldwide. NEED AND PURPOSE OF REVIEW: There is paucity of high quality scientific data regarding pediatric inflammatory bowel disease. Most of the guidelines are offshoots of work done in adults, which have been adapted over time to diagnose and treat pediatric patients. This is in part related to the small numbers in pediatric inflammatory bowel disease and less extensive collaboration for multicentric trials both nationally and internationally...
November 15, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27889727/longitudinal-growth-in-children-and-adolescents-with-type-1-diabetes
#17
Lavanya Parthasarathy, Vaman Khadilkar, Shashi Chiplonkar, Anuradha Khadilkar
OBJECTIVE: To study longitudinal growth in children with type 1 diabetes mellitus. METHODS: Anthropometry, disease duration, insulin regimens and HbA1C recorded from patients with diabetes enrolled in a specialty clinic. RESULTS: 160 children (75 boys; mean (SD) age 9.4 (3.3) y) were enrolled. 35% children had low (<25th centile) height velocity. Disease duration and HbA1C affected height velocity (adjusted for puberty). Children on basal-bolus had higher height velocity Z scores than those on a split mix regimen [(0...
November 15, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27887945/kisspeptin-system-in-pejerrey-fish-odontesthes-bonariensis-characterization-and-gene-expression-pattern-during-early-developmental-stages
#18
M Oswaldo Tovar Bohórquez, Alejandro S Mechaly, Lily C Hughes, Daniela Campanella, Guillermo Ortí, Luis F Canosa, Gustavo M Somoza
In vertebrates, kisspeptins and their receptors are known to be related to puberty onset and gonadal maturation, however, there are few studies concerning their role in early development. Here, we characterize the kisspeptin system in the pejerrey, Odontesthes bonariensis, a fish with strong temperature-dependent sex determination. We reconstructed the phylogenetic history of the two ligands (kiss1 and kiss 2) and two receptors (kissr2 and kissr3) in pejerrey in the context of recent classifications of bony fishes, determined their tissue distribution and documented the early expression pattern of these ligands and receptors...
November 22, 2016: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/27885948/urinary-signature-of-pig-carcasses-with-boar-taint-by-liquid-chromatography-high-resolution-mass-spectrometry
#19
Cristina C Jacob, Gaud Dervilly-Pinel, Yoann Deceuninck, Audrey Gicquiau, Patrick Chevillon, Michel Bonneau, Bruno Le Bizec
Boar taint is an offensive odor that can occur while cooking pork or pork products and is identified in some uncastrated male pigs that have reached puberty. It is widely held that boar taint is the result of the accumulation in back-fat of two malodorous compounds: androstenone and skatole. The purpose of the present study was to assess a mass spectrometry-based metabolomics strategy to investigate the metabolic profile of urine samples from pig carcasses presenting low (untainted) and high (tainted) levels of androstenone and skatole in back fat...
November 25, 2016: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/27881530/menstrual-cups-and-sanitary-pads-to-reduce-school-attrition-and-sexually-transmitted-and-reproductive-tract-infections-a-cluster-randomised-controlled-feasibility-study-in-rural-western-kenya
#20
Penelope A Phillips-Howard, Elizabeth Nyothach, Feiko O Ter Kuile, Jackton Omoto, Duolao Wang, Clement Zeh, Clayton Onyango, Linda Mason, Kelly T Alexander, Frank O Odhiambo, Alie Eleveld, Aisha Mohammed, Anna M van Eijk, Rhiannon Tudor Edwards, John Vulule, Brian Faragher, Kayla F Laserson
OBJECTIVES: Conduct a feasibility study on the effect of menstrual hygiene on schoolgirls' school and health (reproductive/sexual) outcomes. DESIGN: 3-arm single-site open cluster randomised controlled pilot study. SETTING: 30 primary schools in rural western Kenya, within a Health and Demographic Surveillance System. PARTICIPANTS: Primary schoolgirls 14-16 years, experienced 3 menses, no precluding disability, and resident in the study area...
November 23, 2016: BMJ Open
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