Blood pressure and the renin-angiotensin-aldosterone system in children receiving recombinant human growth hormone.
Clin Endocrinol (Oxf)
; 38(3): 245-51, 1993 Mar.
Article
em En
| MEDLINE
| ID: mdl-8458096
ABSTRACT
OBJECTIVE:
We investigated the effect of growth hormone (GH) treatment on salt and water metabolism and the renin-angiotensin-aldosterone system in children with short stature.DESIGN:
Randomized, controlled study. PATIENTS Twenty-nine short, pre-pubertal children referred to two specialist growth clinics for further assessment. MEASUREMENTS Serial measurements of blood pressure, body weight, plasma renin activity (PRA), aldosterone, electrolytes, insulin and insulin-like growth factor I (IGF-I) have been made following the initiation of GH treatment.RESULTS:
A small and transient increase in systolic blood pressure was observed during the first week of GH treatment. The increase in blood pressure over baseline was -1.1 mmHg in controls compared to +11.5 and +3.0 mmHg in children receiving standard (20 units/m2/week) and high dose (40 units/m2/week) GH respectively (P = 0.004). Over the same time interval body weight also tended to increase with GH compared with controls. These changes were greater in those children receiving the lower dose of GH and were not significantly related to age or prior GH status. PRA did not change with GH treatment. Although plasma aldosterone concentration tended to increase with GH, maximal values did not differ from controls and all remained within our normal range. Plasma IgF-I levels were increased by a similar amount in both treatment groups (1.5 and 1.12 U/ml compared to 0.44 U/ml in controls at 4 months). No difference in plasma insulin concentration was noted after 7 days of GH.CONCLUSIONS:
In contrast to adult subjects, treatment with high dose GH in childhood is not associated with activation of the renin-angiotensin-aldosterone system. Clinical signs consistent with transient salt and water retention are observed with GH therapy, however, suggesting either a direct effect of GH or of IGF-I on renal tubular function. Blood pressure, plasma renin activity and plasma aldosterone levels were not increased after more prolonged GH therapy. These data suggest that high dose GH therapy in childhood is unlikely to be associated with the increased risk of hypertension seen in adults with GH hypersecretion.
Buscar no Google
Bases de dados:
MEDLINE
Assunto principal:
Sistema Renina-Angiotensina
/
Pressão Sanguínea
/
Hormônio do Crescimento
/
Transtornos do Crescimento
Tipo de estudo:
Clinical_trials
Limite:
Child
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Clin Endocrinol (Oxf)
Ano de publicação:
1993
Tipo de documento:
Article
País de afiliação:
Reino Unido