Abstract:
Background:Type 1 diabetes (T1D) in adolescents is associated with alterations in the insulin-like factor system probably caused both by a deranged metabolism and insulinopenia in the portal vein. Objective:To study how the circulating IGF-1 is affected at diagnosis and during subsequent years in adolescents with T1D. Methods:Ten girls and ten boys with type 1 diabetes (T1D), aged 13.0 ± 1.4 (mean ± SD) years at diagnosis, took part in the study. Blood samples were drawn at diagnosis and after 3, 9, 18, and 48 months. HbA1c, total IGF-1, and C-peptide were measured. Results:At diagnosis, the patients had high HbA1c, low IGF-1, and measurable C-peptide. After the start of insulin treatment, maximal improvement in glycemic control and IGF-1 occurred within 3 months and then both tended to deteriorate, that is, HbA1c to increase and IGF-1 to decrease. C-peptide decreased with time, and after 4 years, half of the patients were C-peptide negative. At diagnosis, C-peptide correlated positively to IGF-1 (r = 0.50; p < 0.03). C-peptide correlated negatively with insulin dose (U/kg) after 18 and 48 months from diagnosis (r = -0.48; p < 0.03 and r = -0.72; p < 0.001, resp.). Conclusions:In conclusion, our results show that in newly diagnosed adolescents with type 1 diabetes and deranged metabolism, the IGF-1 level is low and rapidly improves with insulin treatment but later tends to decrease concomitantly with declining endogenous insulin secretion.
journal_name
J Diabetes Resjournal_title
Journal of diabetes researchauthors
Chisalita SI,Ludvigsson Jdoi
10.1155/2018/8623560subject
Has Abstractpub_date
2018-03-20 00:00:00pages
8623560eissn
2314-6745issn
2314-6753journal_volume
2018pub_type
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