The earliest records of doping in sport come from the Ancient Olympics games when athletes are reported to have taken figs to improve their performance. With the advent of modern pharmacology in the 19th century, many athletes began to experiment with cocktails of drugs to improve strength and overcome fatigue. As this practice was not illegal, there are good records of the lengths athletes would go to in order to win. Alongside the benefits, came the dangers and following several fatalities, a code to ban performance enhancing drugs was gradually developed. Growth hormone was first isolated from the human pituitary gland in the 1950s. Its anabolic effects were soon recognised and athletes had begun to abuse it by the early 1980s, at least a decade before it was used therapeutically by adult endocrinologists. A number of high profile athletes have admitted using growth hormone. Detection of its abuse has been challenging and the lack of an effective test has undoubtedly encouraged its abuse. Only now are methodologies being developed that should stem this tide.
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http://dx.doi.org/10.1016/j.ghir.2009.04.009 | DOI Listing |
Vet Res Commun
January 2025
Genetics and Biotechnology, Department of Aquaculture, Faculty of Fish Resources, Suez University, Suez, 43221, Egypt.
Selective breeding is a potent method for developing strains with enhanced traits. This study compared the growth performance and stress responses of the genetically improved Abbassa Nile tilapia strain (G9; GIANT-G9) with a local commercial strain over 12 weeks, followed by exposure to stressors including high ammonia (10 mg TAN/L), elevated temperature (37 °C), and both for three days. The GIANT-G9 showed superior growth, including greater weight gain, final weight, length gain, specific growth rate, and protein efficiency ratio, as well as a lower feed conversion ratio and condition factor compared to the commercial strain.
View Article and Find Full Text PDFCancer Epidemiol Biomarkers Prev
January 2025
Cancer Council Victoria, East Melbourne, Victoria, Australia.
Background: Higher concentration of insulin-like growth factor-1 (IGF-1) increases postmenopausal breast cancer risk, but evidence for insulin and c-peptide is limited. Further, not all studies have accounted for potential confounding by biomarkers from other biological pathways, and not all were restricted to estrogen receptor (ER)-positive breast cancer.
Methods: This was a case-cohort study of 1,223 postmenopausal women (347 with ER-positive breast cancer) from the Melbourne Collaborative Cohort Study.
Turk J Pediatr
December 2024
Department of Plastic Reconstructive and Aesthetic Surgery, Hacettepe University Faculty of Medicine, Ankara, Türkiye.
Background: Any impediment to the development of midline structures i.e. hypothalamus, pituitary and oral cavity may cause anatomical and functional issues.
View Article and Find Full Text PDFPlant Cell Environ
January 2025
Centro de Energia Nuclear na Agricultura, Universidade de São Paulo (USP), Piracicaba, São Paulo, Brazil.
Moniliophthora perniciosa is the causal agent of the witches' broom disease of cacao (Theobroma cacao), and it can infect the tomato (Solanum lycopersicum) 'Micro-Tom' (MT) cultivar. Typical symptoms of infection are stem swelling and axillary shoot outgrowth, whereas reduction in root biomass is another side effect. Using infected MT, we investigated whether impaired root growth derives from hormonal imbalance or sink competition.
View Article and Find Full Text PDFBMC Pediatr
January 2025
Department of Child Health, West China Second University Hospital, Sichuan University, No.20, Section 3, Renmin South Road, Wuhou District, Chengdu City, 610041, Sichuan Province, China.
Objective: To explore the effect of short-acting growth hormone (GH) supplementation on bone age and growth rate of children with idiopathic short stature.
Methods: The authoritative databases such as PubMed, Medline, and Web of Science were extensively searched through the systematic and comprehensive literature retrieval strategy to compile the clinical research data on the treatment of idiopathic short stature with short-acting GH. The study will be strictly screened to ensure that all enrolled research subjects are patients with idiopathic short stature, and the intervention method is defined as short-acting GH replacement therapy, and a reasonable control group is set, such as placebo treatment, to ensure the scientificity and comparability of research results.
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