Doping: a challenge to the endocrinologist. A reappraisal in view of the Olympic Games of 2004

Leonidas H Duntas, Constantinos Parisis

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The aim of this review is to provide an update on drug abuse by athletes, their mode of action and the technical difficulties of detection. The most common doping agents are the anabolic steroids (AS), testosterone derivatives modified to take advantage of the anabolic rather than the androgenic properties of the hormone…

The influence of exercise on growth hormone and testosterone in prepubertal and early-pubertal boys

Charilaos Tsolakis, Paraskevi Xekouki, Socratis Kaloupsis, Dimitrios Karas, Dimosthenis Messinis, George Vagenas, Athanasios Dessypris

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The purpose of this study was two fold a) to determine the levels of hormonal parameters which are related to growth and sexual maturation (T, SHBG, FAI, GH) in 66 pre-pubertal and early-pubertal boys (11-13 years old) who systematically engage in individual and team sports activities of endurance, strength, speed and skill, respectively …

Pegvisomant-primed growth hormone (GH) stimulation test is useful in identifying true GH deficient children

Giorgio Radetti, Heba H. Elsedfy, Randa Khalaf, Cristina Meazza, Sara Pagani, Mohamed El Kholy, Riccardo Albertini, Anna Maria De Stefano, Antonella Navarra, Annalisa De Silvestri, Mauro Bozzola

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OBJECTIVE: Provocative stimulation tests for growth hormone (GH) assessment have poor reproducibility and can often elicit false positive results in normal children. The aim of our study was to confirm the capability of pegvisomant as an enhancer of GH secretion in unmasking false-positive results in short children (height <-2.0 standard deviation score, SDS) undergoing GH testing ...