Growth hormone deficiency: permanence and diagnosis in young adults |
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Authors: | Castro C Trivin C Souberbielle J-C Zerah M Brauner R |
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Institution: | Department of Pediatric Endocrinology, Université René Descartes and H?pital Necker-Enfants Malades, Assistance Publique-H?pitaux de Paris, France. |
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Abstract: | OBJECTIVE: To optimize the tools for diagnosing idiopathic growth hormone (GH) deficiency. METHODS: We compared the data of 43 young adults treated for GH deficiency before and after GH treatment and puberty. Those with organic lesions were assigned to group 1 (n = 9), those with certain GH deficiency (n = 11) to group 2 and those with no criterion of certitude of GH deficiency to group 3 (n = 23). RESULTS: Group 1 patients: the GH peaks at first 1.5 +/- (SE) 0.4 microg/l] and second (1.9 +/- 0.7 microg/l) evaluations before treatment were similar to those at the third evaluation (1.2 +/- 0.8 microg/l) after treatment. Group 2 patients: they had similar peaks (2.6 +/- 0.8, 2.9 +/- 0.5 and 5.5 +/- 1.4 microg/l). Group 3 patients: the peaks increased from 4.9 +/- 0.4 and 4.8 +/- 0.4 to 18.4 +/- 2.3 microg/l (p < 0.0001); 87% had a GH peak >10 microg/l at this evaluation. The plasma insulin-like growth factor 1 was initially below -2 z-score in 12/13 of these patients and similarly low in 4/17 patients at the third evaluation. The growth rates of the three groups before and their increase during the 1st year of treatment were similar. CONCLUSION: Almost all patients with GH deficiency before puberty without criteria of certitude had a normal GH peak after puberty. Some of these patients probably had a transiently low GH secretion. |
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