After 6years of intraperitoneal insulin administration IGF-I concentrations in T1DM patients are at low-normal level

Growth Hormone & IGF Research : Official Journal of the Growth Hormone Research Society and the International IGF Research Society
P R van DijkHenk J Bilo

Abstract

Low concentrations of insulin-like growth factor-I (IGFI) have been reported in type 1 diabetes mellitus (T1DM), suggested to be due to low insulin concentrations in the portal vein. The aim was to describe the long-term course of IGFI concentrations among T1DM subjects treated with continuous intraperitoneal (IP) insulin infusion (CIPII). Nineteen patients that participated in a randomized cross-over trial comparing CIPII and subcutaneous (SC) insulin therapy in 2006 were followed until 2012. IGF-I measurements were performed at the start of the 2006 study, after the 6 month SC- and CIPII treatment phase in 2006 and during CIPII therapy in 2012. Z-scores were calculated to compare the IGF-I concentrations with age-specific normative range values of a non-DM reference population. In 2012, IGF-I Z-scores (-0.7; 95% confidence interval -1.3, -0.2) were significantly higher than at the start of the 2006 study (-2.5; -3.3, -1.8), the end of the SC (-2.0; -2.6, -1.5) and CIPII (-1.6; -2.1, -1.0) treatment phase with a mean difference of: 1.8 (0.9, 2.7), 1.3 (0.5, 2.1) and 0.8 (0.1, 1.6), respectively. After 6 years of treatment with CIPII, IGF-I concentrations among T1DM patients increased to a level that is higher than during prior...Continue Reading

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Apr 9, 2014·BMC Endocrine Disorders·Peter R van DijkHenk Jg Bilo

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