Results 71 to 80 of about 8,925 (264)

Central Precocious Puberty: Update on Diagnosis and Treatment [PDF]

, 2015
Central precocious puberty (CPP) is characterized by the same biochemical and physical features as normally timed puberty but occurs at an abnormally early age. Most cases of CPP are seen in girls, in whom it is usually idiopathic.
Chen, Melinda, Eugster, Erica A.
core   +1 more source

Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders

Andrology, EarlyView.
Abstract The hypothalamic–pituitary–gonadal axis is regulated by the gonadotropin‐releasing hormone pulse generator in the hypothalamus. This is comprised of neurons that secrete kisspeptin in a pulsatile manner to stimulate the release of GnRH, and, in turn, downstream gonadotropins from the pituitary gland, and subsequently sex steroids and ...
Aureliane C. S. Pierret, Aaran H. Patel, Elisabeth Daniels, Alexander N. Comninos, Waljit S. Dhillo, Ali Abbara   +5 more
wiley   +1 more source

Fatores de correção para perímetro escrotal ao sobreano para tourinhos mestiços Aberdeen Angus x Nelore Adjustment factors for scrotal circumference at yearling for crossbred Aberdeen Angus x Nelore young bulls

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2009
Obtiveram-se fatores de correção (FC) para o perímetro escrotal ao sobreano (PES) para os efeitos de grupo genético (GG), heterozigose individual (HI), peso ao sobreano (PS) e idade do animal à pesagem de sobreano (IDS), utilizando-se registros de peso ...
J.S. Lopes, P.R.N. Rorato, T. Weber, J.G. Comin, R.O. Araújo   +4 more
doaj   +1 more source

Testicular ultrasonography in young bulls and correlation with puberty and sperm production

Agrarian, 2020
The present work aims to evaluate the echogenicity of the testicular parenchyma of young bulls correlating with precocious puberty. The study was developed with 39 Nellore purebred bulls (PO) aged 12 to 18 months.
Geissy Helen de Sousa, Ana Luiza da Silva Ribeiro, Vivian Cristian de Freitas Lima, Antônio Humberto Hamad Minervino, Alanna do Socorro Lima da Silva, Kedson Alessandri Lobo Neves   +5 more
doaj   +1 more source

Genetic and phenotypic parameters for sexual precocity and parasite resistance traits in Nellore cattle [PDF]

, 2023
Mariana Mamedes de Moraes, Gabriela Canabrava Gouveia, Virgínia Mara Pereira Ribeiro, Andresa Eva Melo de Araújo, Eduardo Penteado Cardoso, Fábio Luiz Buranelo Toral   +5 more
openalex   +1 more source

Sperm Telomere Interactions Are Impaired in Testicular Cancer Before and After Adjuvant Therapy

Andrology, EarlyView.
ABSTRACT Background No study has yet explored telomere length or interaction in sperm nuclei of testicular cancer (TC) patients exposed to chemotherapy or radiotherapy. However, sperm telomere dynamics have emerged as a potential marker in male infertility.
Benoit Berby, Sylvianne Hennebicq, Jacqueline Saias, Florence Brugnon, Isabelle Berthaut, Myriam Daudin, Louis Bujan, Ludovic Dumont, Christine Rondanino, Aurélie Feraille, Nathalie Rives   +10 more
wiley   +1 more source

Efeitos genéticos e ambientais sobre o perímetro escrotal de animais da raça Caracu Genetic and environment effects on scrotal circumference in Caracu cattle

Revista Brasileira de Zootecnia, 2007
Neste trabalho foram avaliados os efeitos de idade (IDS) e peso aos 15 meses (P15) sobre medidas de perímetro escrotal ao sobreano de 1.892 machos da raça Caracu e estimada a herdabilidade desta característica.
Maira Mattar, João Ademir de Oliveira, Sarah Laguna Meirelles, Sandra Aidar de Queiroz   +3 more
doaj   +1 more source

Medical Gases as Emerging Regulators of Paediatric Endocrine and Neurodevelopmental Pathways: A Mini‐Review

Acta Paediatrica, EarlyView.
ABSTRACT Aim Medical gases, including nitric oxide, carbon monoxide, hydrogen sulphide and molecular hydrogen, have emerged as key regulators of redox balance and cellular signalling. This mini‐review examines their relevance to paediatric endocrine and neurodevelopmental pathways, domains particularly sensitive to oxidative and inflammatory ...
Roberto Paparella, Fabiola Panvino, Ida Pucarelli, Luigi Tarani   +3 more
wiley   +1 more source

Parâmetros genéticos para idade ao primeiro parto estimados por diferentes modelos para rebanhos da raça Nelore Genetic parameters for age at first calving estimated by different models for Nellore breed herds

Ciência Rural, 2008
Com objetivo de estimar parâmetros genéticos e estudar a utilização de diferentes efeitos em avaliações genéticas para idade ao primeiro parto (IPP) por diferentes modelos, foram utilizados registros de IPP de animais da raça Nelore, nascidos entre os ...
Arione Augusti Boligon, Pedro Alejandro Vozzi, Jeferson Nomelini, Paulo Roberto Nogara Rorato, Luiz Antonio Framartino Bezerra, Raysildo Barbosa Lôbo   +5 more
doaj   +1 more source

Risky,early, controversial. Puberty in medical discourses [PDF]

, 2015
This article comes within the compass of a research program (entitled CorAge. Bodily Experiences and AgePassages among 9e13 year-olds (ANR-09-ENFT-017) conducted between 2009 and 2013 about the emergence of a \u201cnew\u201d age in life ...
Cozzi, D, Vinel, V.
core   +1 more source