hrp0089p1-p146 | GH & IGFs P1 | ESPE2018

Laron Syndrome Patients have an Abnormal Plasma Amino Acid Pattern

Laron Zvi , Barazani Chen

Background: Laron syndrome (LS), (OMIM#262500) is a rare recessively inherited disease caused by deletions or mutations of the GH receptor, and is characterized by low or undetectable serum IGF-I. This deficiency leads to a series of metabolic abnormalities including of the proteins.Subjects & Method: This study presents for the first time the amino-acid analysis of two untreated and one IGF-I treated LS patients using the LC-MS/MS method (Waters TQS...

hrp0095p1-357 | Pituitary, Neuroendocrinology and Puberty | ESPE2022

The Prolactin (PRL) – Growth Hormone (GH) Relationship during Growth Hormone Stimulation Tests

Laron Zvi , Silbergeld Avivah , Barazani Chen , Lilos Pearl

Background: Despite many similarities between the structure, receptors and proliferative and growth promoting actions, the interrelationship between PRL and GH in clinical conditions has received little attention.Aim: To determine the PRL response to GH stimulation tests.Subjects: Prepubertal and early pubertal boys (n=581) and girls (n=502) with short stature.</p...