Published in:
01-10-2009 | Article
Height growth velocity, islet autoimmunity and type 1 diabetes development: the Diabetes Autoimmunity Study in the Young
Authors:
M. M. Lamb, X. Yin, G. O. Zerbe, G. J. Klingensmith, D. Dabelea, T. E. Fingerlin, M. Rewers, J. M. Norris
Published in:
Diabetologia
|
Issue 10/2009
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Abstract
Aims/hypothesis
Larger childhood body size and rapid growth have been associated with increased type 1 diabetes risk. We analysed height, weight, BMI and velocities of growth in height, weight and BMI, for association with development of islet autoimmunity (IA) and type 1 diabetes.
Methods
Since 1993, the Diabetes Autoimmunity Study in the Young (DAISY) has followed children at increased type 1 diabetes risk, based on HLA-DR, -DQ genotype or family history, for the development of IA and type 1 diabetes. IA was defined as the presence of autoantibodies to insulin, GAD or protein tyrosine phosphatase islet antigen 2 twice in succession, or autoantibody-positive on one visit and diabetic at the next consecutive visit within 1 year. Type 1 diabetes was diagnosed by a physician. Height and weight were collected starting at age 2 years. Of 1,714 DAISY children <11.5 years of age, 143 developed IA and 21 progressed to type 1 diabetes. We conducted Cox proportional hazards analysis to explore growth velocities and size measures for association with IA and type 1 diabetes development.
Results
Greater height growth velocity was associated with IA development (HR 1.63, 95% CI 1.31–2.05) and type 1 diabetes development (HR 3.34, 95% CI 1.73–6.42) for a 1 SD difference in velocity.
Conclusions/interpretation
Our study suggests that greater height growth velocity may be involved in the progression from genetic susceptibility to autoimmunity and then to type 1 diabetes in pre-pubertal children.