PMID- 10325701 OWN - NLM STAT- MEDLINE DCOM- 19990520 LR - 20190501 IS - 1468-2044 (Electronic) IS - 0003-9888 (Print) IS - 0003-9888 (Linking) VI - 80 IP - 3 DP - 1999 Mar TI - Insulin-like growth factor I, IGF binding protein 3, and IGFBP protease activity: relation to anthropometric indices in solid tumours or leukaemia. PG - 226-30 AB - OBJECTIVES: To measure the serum concentrations of insulin-like growth factor I (IGF-I) and IGF binding protein 3 (IGFBP-3), and the level of IGFBP-3 protease activity in 38 children presenting with malignancies, and to assess their relation with auxological parameters and nutritional status. METHODS: Height, weight, skinfold thickness, and mid-upper arm circumference (MUAC) were recorded using standard techniques. IGF-I and IGFBP-3 were measured using specific radioimmunoassays. Serum IGFBPs were also visualised on western ligand blot. IGFBP-3 protease activity was assessed by the extent of fragmentation of recombinant [125I]-IGFBP-3, compared with that induced by pregnancy serum. Anthropometric and radioimmunoassay data were expressed as standard deviation scores (SDS). RESULTS: The median (range) IGF-I SDS was significantly reduced in all patients (-1.1 (-5.1 to 1.2)) and lower in children who were malnourished (-2.5 (-3.9 to 0.1)). IGFBP-3 SDS was within the normal range for 31 of 38 patients but IGFBP-3 protease activity was raised in all patients. Neither IGFBP-3 concentration nor protease activity was affected by nutritional status. IGF-I correlated with MUAC (r = 0.41) and subscapular skinfold thickness SDS (r = 0.38), but not with weight, height, weight for height, or triceps skinfold thickness. CONCLUSIONS: IGF-I is low in children with malignancies, and even lower in those who are malnourished. IGFBP-3 concentrations were normal in most patients but interpretation is complicated by the presence of raised IGFBP-3 protease activity, which could lead to overestimating concentrations of intact peptide. IGF-I appears to relate to arm anthropometry as an index of nutritional status but not height, weight, or weight for height, as would be expected in normal children. FAU - Brennan, B M AU - Brennan BM AD - Department of Paediatric Oncology, Manchester Children's Hospitals, UK. FAU - Gill, M AU - Gill M FAU - Pennells, L AU - Pennells L FAU - Eden, O B AU - Eden OB FAU - Thomas, A G AU - Thomas AG FAU - Clayton, P E AU - Clayton PE LA - eng PT - Journal Article PL - England TA - Arch Dis Child JT - Archives of disease in childhood JID - 0372434 RN - 0 (Biomarkers) RN - 0 (Insulin-Like Growth Factor Binding Protein 3) RN - 67763-96-6 (Insulin-Like Growth Factor I) RN - EC 3.4.- (Endopeptidases) RN - EC 3.4.99.- (insulin-like growth factor binding protein-3 protease) SB - IM MH - Adolescent MH - Biomarkers/blood MH - Body Height MH - Body Weight MH - Child MH - Child, Preschool MH - Endopeptidases/*blood MH - Humans MH - Infant MH - Insulin-Like Growth Factor Binding Protein 3/*blood MH - Insulin-Like Growth Factor I/*analysis MH - Leukemia/blood/complications MH - Neoplasms/*blood/complications MH - Nutrition Disorders/*blood/etiology MH - Skinfold Thickness MH - Statistics, Nonparametric PMC - PMC1717861 EDAT- 1999/05/18 00:00 MHDA- 1999/05/18 00:01 PMCR- 2002/03/01 CRDT- 1999/05/18 00:00 PHST- 1999/05/18 00:00 [pubmed] PHST- 1999/05/18 00:01 [medline] PHST- 1999/05/18 00:00 [entrez] PHST- 2002/03/01 00:00 [pmc-release] AID - 10.1136/adc.80.3.226 [doi] PST - ppublish SO - Arch Dis Child. 1999 Mar;80(3):226-30. doi: 10.1136/adc.80.3.226.