Simultaneous stimulation of growth hormone, adrenocorticotropin and cortisol with L-dopa/L-carbidopa and propranolol in children of short stature.
Acta Paediatr
; 89(4): 442-6, 2000 Apr.
Article
em En
| MEDLINE
| ID: mdl-10830457
ABSTRACT
In 59 otherwise healthy children of short stature, the simultaneous response of growth hormone, cortisol and plasma adrenocorticotropin (ACTH) to L-dopa/L-carbidopa and propranolol at 45 and 90 min after administration were investigated. A growth hormone response of 10 microg/l or higher was considered positive. The definition of a positive cortisol response included either a hormone increase of at least 193 nmol/l or a peak hormone level of at least 497 nmol/l. The ACTH increase had to be fourfold above 11 pmol/l to be considered positive. In the 59 investigated children, the median basal growth hormone levels increased from 1.35 microg/l to 18.05 microg/l and 10.15 microg/l at 45 and 90 min after stimulation (p < 0.05). The median cortisol levels rose from 242 nmol/l to 439 nmol/l and 612 pmol/l, and the corresponding median ACTH levels from 2.94 pmol/l to 9.63 pmol/l and 11.13 pmol/l at 45 and 90 min after stimulation. Significant positive hormone response rates were 88.1% for growth hormone, 88.1% for cortisol and 69% for ACTH. These results could be attributed to the enhanced stimulating effect of the additional administration of L-carbidopa and propranolol. We conclude that the administration of L-dopa/L-carbidopa and propranolol is useful for the simultaneous evaluation of growth hormone, cortisol and ACTH secretion in children of short stature.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Testes de Função Hipofisária
/
Hidrocortisona
/
Hormônio do Crescimento
/
Dopaminérgicos
/
Carbidopa
/
Levodopa
/
Hormônio Adrenocorticotrópico
/
Transtornos do Crescimento
Tipo de estudo:
Diagnostic_studies
Limite:
Adolescent
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Child
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Child, preschool
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Acta Paediatr
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Alemanha