Results 91 to 100 of about 114,517 (262)

Identification and Optimization of Contributing Factors for Precocious Puberty by Machine/Deep Learning Methods in Chinese Girls

open access: yesFrontiers in Endocrinology, 2022
Background and ObjectivesAs the worldwide secular trends are toward earlier puberty, identification of contributing factors for precocious puberty is critical.
Bo Pang   +14 more
doaj   +1 more source

Spectrum of Hypogonadism and Its Management in Adolescents With Prader‐Willi Syndrome: A Retrospective Cohort Study Over 35 Years

open access: yesClinical Endocrinology, EarlyView.
ABSTRACT Context Adult data indicate that hypogonadism is underdiagnosed and undertreated in Prader‐Willi Syndrome (PWS). Objectives We aimed to describe the spectrum of pubertal development, and the diagnosis and treatment of hypogonadism in paediatric/adolescent patients with PWS. Design/Patients A retrospective cohort study of patients with PWS aged
Helen Nguyen   +2 more
wiley   +1 more source

Contribution of Fat Adjustment to Residual Feed Intake Estimation in Beef Cattle

open access: yesJournal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Including fat thickness as a covariate in the regression model used to calculate residual feed intake (RFI) could help preserve carcass quality traits, such as marbling, flavour and juiciness, by accounting for variation in fat deposition.
Larissa Bordin Temp   +8 more
wiley   +1 more source

Parent-of-origin-specific allelic associations among 106 genomic loci for age at menarche. [PDF]

open access: yes, 2014
Age at menarche is a marker of timing of puberty in females. It varies widely between individuals, is a heritable trait and is associated with risks for obesity, type 2 diabetes, cardiovascular disease, breast cancer and all-cause mortality.
A Kong   +271 more
core   +7 more sources

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

open access: yesActa 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   +2 more
doaj  

Genetic Parameters and Genome‐Wide Association Studies for Fertility and Reproduction Traits in U.S. Katahdin Sheep Based on the Single‐Step GBLUP Methodology

open access: yesJournal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sheep production contributes to a secure and diverse food and fibre supply in the United States, with growing ethnic diversity strengthening demand. Katahdin is a composite hair‐type sheep breed developed in the United States that has become the most popular breed in many regions of the country and the first one to have genomic selection ...
Alejandra Toro Ospina   +6 more
wiley   +1 more source

Bird's-eye view of GnRH analog use in a pediatric endocrinology referral center [PDF]

open access: yes, 2015
OBJECTIVE: Gonadotropin-releasing hormone analogs (GnRHa) are standard of care for the treatment of central precocious puberty (CPP). GnRHa have also been prescribed in other clinical settings with the hope of increasing adult stature, although ...
Eugster, Erica A.   +3 more
core   +1 more source

Genetic Relationships Between Residual Gain and Economically Important Traits in Nellore Cattle

open access: yesJournal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Sustainable beef production requires identifying animals with superior feed efficiency to reduce environmental impact and production costs. This study aimed to estimate heritability and genetic correlations between residual gain (RG) and growth, reproductive, carcass and feed efficiency traits in Nellore cattle.
Miller Teodoro   +7 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

open access: yesJournal 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   +5 more
wiley   +1 more source

Environmental chemical exposures and breast cancer [PDF]

open access: yes, 2016
As a hormone-sensitive condition with no single identifiable cause, breast cancer is a major health problem. It is characterized by a wide range of contributing factors and exposures occurring in different combinations and strengths across a lifetime ...
Plant, J, Stanley, E, Voulvoulis, N
core   +2 more sources

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