Altered GH elimination kinetics in type 1 diabetes mellitus can explain the elevation in circulating levels: bicompartmental approach

The Journal of Clinical Endocrinology and Metabolism
P F CatalinaF Mallo

Abstract

Type 1 diabetes mellitus (DM 1) is associated with elevated circulating GH concentrations. Because these high GH levels could be explained either by an augmented pituitary secretion and/or delayed elimination clearance or distribution, we sought to evaluate GH pharmacokinetics to propose a model that better explains the elimination kinetics in patients with DM 1 and assess possible differences with normal volunteers that could justify elevation in GH circulating levels in these patients. A multicompartmental analysis was applied to serum GH concentrations measured at different times for 150 min in six patients with DM 1 and six age-, sex-, and body mass index-matched normal subjects after the administration of an iv bolus of recombinant human GH (200 microg), previous suppression of endogenous GH release with octreotide. The best fitting to the GH disappearance profiles was obtained with the biexponential equation in both groups. From it, we propose a bicompartmental model to explain GH kinetics in normal and diabetic patients. The mean transit time in both compartments and the mean residence time in patients with DM 1 were more than twice the values from control group. So in DM 1 elevated circulating GH concentrations are, at ...Continue Reading

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Citations

Mar 24, 2009·Growth Hormone & IGF Research : Official Journal of the Growth Hormone Research Society and the International IGF Research Society·Thomas KlitgaardMartin Lange
Apr 17, 2009·Pituitary·José Alexandre Curiacos de Almeida LemeEliete Luciano
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Sep 20, 2008·Xenobiotica; the Fate of Foreign Compounds in Biological Systems·R WebsterD Walker

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