Influence of the d3-growth hormone (GH) receptor isoform on short-term and long-term treatment response to GH replacement in GH-deficient adults.
J Clin Endocrinol Metab
; 93(7): 2828-34, 2008 Jul.
Article
en En
| MEDLINE
| ID: mdl-18397980
ABSTRACT
OBJECTIVE:
Recombinant human GH (rhGH) replacement in adults is aimed at improving signs and symptoms of the adult GH deficiency (GHD) syndrome. In children, a common polymorphism of the GH receptor (exon-3 deletion, d3GHR) increases the response to rhGH replacement. The aim of this study was to assess the effects of this polymorphism on the response to rhGH replacement in adults.DESIGN:
Prospective intervention with rhGH during 1 yr (n = 99) and in a subset during 5 yr (n = 53). PATIENTS ANDMETHODS:
The presence of the d3GHR variant was established in GHD patients and linked to short-term and long-term effects of rhGH replacement on IGF-I, lipid metabolism, anthropometric parameters, and bone mineral density.RESULTS:
Fifty-five patients had two wild-type alleles (56%), whereas 38 patients (38%) had one allele and six patients (6%) had two alleles coding the d3GHR isoform. During short-term rhGH replacement, the increase in IGF-I was higher in patients bearing at least one d3GHR allele, compared with those with two wild-type alleles (at an identical mean dose of rhGH). The decrease in total cholesterol and low-density lipoprotein cholesterol was lower in the group bearing at least one d3GHR allele, whereas the increase in high-density lipoprotein cholesterol was higher, compared with patients with the wild-type genotype. In contrast, these differential responses of GHR genotype could not be demonstrated during long-term rhGH replacement.CONCLUSION:
The d3GHR genotype contributes, at least for some parameters, to the interindividual differences in efficacy of short-term, but not long-term, rhGH replacement in adults with GHD.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Receptores de Somatotropina
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Hormona de Crecimiento Humana
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Terapia de Reemplazo de Hormonas
Tipo de estudio:
Observational_studies
Límite:
Adult
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Aged80
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
J Clin Endocrinol Metab
Año:
2008
Tipo del documento:
Article
País de afiliación:
Países Bajos