Results 91 to 100 of about 158,443 (246)

Puberty timing and cognitive functioning: insights from the Adolescent Brain Cognitive Development (ABCD) study and Mendelian randomization

Journal of Child Psychology and Psychiatry, EarlyView.
Background Early puberty timing is linked to altered neurodevelopment and adverse mental health outcomes, yet its relationship with cognitive functioning remains unclear. We examined the effects of puberty timing across multiple cognitive domains.
Lars Dinkelbach, Bianca Serio, Sofie Valk, Franka Edith Weisner, Luise Margaretha Bläschke, Triinu Peters, Anke Hinney, Börge Schmidt, Raphael Hirtz   +8 more
wiley   +1 more source

Body size of male Atlantic salmon (Salmo salar L.) at introduction of a 5‐week LD12:12 winter signal influences their decision to mature early or smoltify

Journal of Fish Biology, EarlyView.
Abstract Sexual maturation of male Atlantic salmon post‐smolts (‘jacking’) is undesired in aquaculture and seems to occur due to the intensification in modern facilities. Maturation depends on internal and external factors (temperature, photoperiod, feed availability, energy levels, body size, genetic background) that act on the brain‐pituitary‐gonad ...
Enrique Pino‐Martinez, Kristine F. Staveland, Mitchell S. Fleming, Pablo Balseiro, Cindy Pedrosa, Sigurd O. Handeland   +5 more
wiley   +1 more source

A Testicular Leydig Cell Tumor; An Uncommon Cause of Precocious Puberty: A Case Report With Secondary Central Precocious Puberty

Acta Medica Iranica, 2023
Sexual precocity in boys is defined as any sign of secondary sexual characteristics present before the age of 9. Leydig cell tumors of the testes are a rare cause of peripheral precocious puberty in boys.
Seyede Tahereh Mousavi, Farshad Zohrabi, Mohammadreza Farzaneh   +2 more
doaj  

Narcolepsy and rapid eye movement sleep

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Since the first description of narcolepsy at the end of the 19th Century, great progress has been made. The disease is nowadays distinguished as narcolepsy type 1 and type 2. In the 1960s, the discovery of rapid eye movement sleep at sleep onset led to improved understanding of core sleep‐related disease symptoms of the disease (excessive ...
Francesco Biscarini, Lucie Barateau, Fabio Pizza, Giuseppe Plazzi, Yves Dauvilliers   +4 more
wiley   +1 more source

Causes and Types of Precocious Puberty in North-West Iran [PDF]

, 2013
Objective: Precocious puberty is of concern because of the underlying disorders, the short adult stature, and the psychosocial difficulties. This study was carried out in order to evaluate the characteristics of children referred to pediatric ...
Shiva, Siamak, Shiva, Shadi, Fayyazi, Afshin, Melikian, Armen   +3 more
core  

Tanner stages of thelarche in relation to anthropometric and ultrasound predictors in premenarcheal girls

Acta Obstetricia et Gynecologica Scandinavica, Volume 105, Issue 11, Page 2221-2235, November 2026.
We found a close correlation between thelarche and internal genital maturation on pelvic ultrasound, paralleling Tanner breast stages and supporting the concept of correlated external and internal pubertal development. Abstract Introduction Thelarche is often the first sign of puberty initiation in girls.
Andrius Cekuolis, Zivile Sabonyte‐Balsaitiene, Eugenijus Jasiunas, Rytis Marozas, Janina Tutkuviene, Diana Ramasauskaite, Zana Bumbuliene   +6 more
wiley   +1 more source

Clinical spectrum of precocious puberty and its normal variants in children: insights from a seven-year review in a tertiary hospital, Calabar, Nigeria

Ibom Medical Journal
Context: Precocious puberty, clinically defined as the development of secondary sexual characteristics before 8 years of age in girls and 9 years in boys, represents a clinical spectrum that encompasses both pathological and non-pathological variants of
Eyong ME, Nsa EI, Uzomba CI, Eyong EM, Brown E, Ikobah JM, Etuk IS   +6 more
doaj   +1 more source

Association between MKRN3 and LIN28B polymorphisms and precocious puberty

BMC Genetics, 2018
Background The present study aimed to investigate the association between MKRN3 and LIN28B gene polymorphisms and precocious puberty in Korean boys and girls.
Bo Ram Yi, Hyun Jeong Kim, Hye Sook Park, Yoon Jeong Cho, Ju Young Kim, Jeong Yee, Jee Eun Chung, Joo Hee Kim, Kyung Eun Lee, Hye Sun Gwak   +9 more
doaj   +1 more source

The prevalence of central precocious puberty in 2010.

, 2015
The prevalence of central precocious puberty in 2010.
Shin Hye Kim (822625), Sungho Won (91486), Kyoung Huh (822626), Kuk-Wha Lee (822627), Mi-Jung Park (822628)   +4 more
core   +1 more source

The MexMAGIC population reveals the genetic architecture of traits exhibiting clinal variation in Mexican native maize

New Phytologist, Volume 252, Issue 3, Page 1296-1313, November 2026.
The MexMAGIC population mixes native maize varieties from across Mexico to study functional genetic diversity. Summary Defining the genetic basis of local adaptation is a key goal of evolutionary biology and crop improvement. Theory predicts that when selective pressures follow differences in the environment, a cline will be established.
Sergio Perez‐Limón, Ana Laura Alonso‐Nieves, M. Rosario Ramírez‐Flores, G. Carolina Cintora‐Martínez, M. Nancy Salazar‐Vidal, Jorge Vladimir Torres‐Rodriguez, Jessica Carcaño‐Macías, Melanie G. Perryman, Oliver H. S. Paulson, Jagdeep S. Sidhu, Peng Yu, Victor Llaca, Kevin A. Fengler, Forrest Li, Daniel E. Runcie, Jeffrey Ross‐Ibarra, C. Stewart Gillmor, Rubén Rellán‐Álvarez, Ruairidh J. H. Sawers   +18 more
wiley   +1 more source