Growth hormone-binding protein levels: Studies of children with short stature
| Autor: | Suzanne Murphy, Thomas J. Merimee, Lena M. S. Carlsson, Nelly Mauras |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Aging
medicine.medical_specialty Gonad Endocrinology Diabetes and Metabolism Radioimmunoassay Turner Syndrome Dwarfism Hypopituitarism Biology Short stature Endocrinology Growth hormone-binding protein Internal medicine Turner syndrome medicine Humans Insulin-Like Growth Factor I Child Growth Disorders GH Receptor Body Weight medicine.disease Body Height medicine.anatomical_structure Growth Hormone Chromatography Gel medicine.symptom Carrier Proteins |
| Zdroj: | Metabolism. 43:357-359 |
| ISSN: | 0026-0495 |
| DOI: | 10.1016/0026-0495(94)90104-x |
| Popis: | A high-affinity growth hormone-binding protein (GHBP) in serum is derived from the extracellular domain of the GH receptor. In an attempt to investigate the differences in GHBP levels in various conditions of poor growth, we measured GHBP levels by two methods—an Ultrogel chromatographic technique and a ligand-mediated immunofunctional assay (LIFA). The following three groups of children were studied: Turner's syndrome (n = 7), idiopathic and/or familial short stature ([ISS] n = 15), and organic or idiopathic hypopituitarism (n = 19). All groups were similar in age (Turner's syndrome, 10.1 ± 0.9 years; ISS, 10.0 ± 0.7; hypopituitarism, 11.5 ± 1.0) and height SEM score (Turner's syndrome, −2.9 ± 0.3; ISS, −3.0 ± 0.4; hypopituitarism, −2.3 ± 0.4). Their values were compared with those values of GHBP in healthy controls of similar age. Immunofunctional assay values for GHBP were as follows: Turner's syndrome, 235.4 ± 26.0 pmol/L; ISS, 122.4 ± 11.0; and hypopituitarism, 157.1 ± 23.0. These results were significantly different in subjects with ISS and hypopituitarism as compared with a group of healthy controls between the ages of 9 and 12 years (N = 255; GHBP = 287.9 ± 10.9 pMol/L; P < .001 compared with both ISS and hypopituitarism). Similar changes were found using Ultrogel chromatography. This difference in GHBP levels is still significant even when more stringent criteria are applied to define hypopituitarism (ie, peak GH responses to stimuli |
| Databáze: | OpenAIRE |
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