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KMID : 1036920200250040234
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Annals of Pediatric Endocrinology & Metabolism
2020 Volume.25 No. 4 p.234 ~ p.239
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Relationship between growth velocity and change of levels of insulin-like growth factor-1, insulin-like growth factor binding protein-3 and, IGFBP-3 promoter polymorphism during GnRH agonist treatment
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Park Jun-Hong
Hwang Il-Tae
Yang Seung
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Abstract
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Purpose: This study aims to investigate the effect of gonadotropin-releasing hormone agonist (GnRHa) on the growth hormone (GH)-insulin-like growth factor-1 (IGF-1) axis and to evaluate whether -202 A/C IGF binding protein-3 (IGFBP-3) promoter polymorphism affects growth velocity in females with central precocious puberty (CPP) during treatment.
Methods: Data was collected from 97 females younger than 9 years, diagnosed with precocious puberty and treated with GnRHa for at least 1 year at Kangdong Sacred Heart Hospital from 2014 to 2015. Their body height, weight, change in height standard deviation score (?SDS), serum IGF-1, serum IGFBP-3, bone age, and -202 A/C IGFBP-3 promoter polymorphism were measured before and after GnRHa treatment. The interrelationships between the variables were calculated.
Results: During treatment, height SDS, IGF-1 SDS, IGFBP-3 SDS, and IGF-1/IGFBP-3 ratio significantly decreased. A significant correlation was observed between ?IGF-1 SDS and ?height SDS (r=0.405, P<0.001). The presence of the C allele was significantly correlated with IGF-1 SDS after treatment (P=0.049) and with IGFBP-3 SDS before and after treatment (P=0.012 and P=0.001), but not with ?IGF-1 SDS, ?IGFBP-3 SDS, ?IGF-1/IGFBP-3 ratio, or ?height SDS.
Conclusions: Growth velocity during GnRHa treatment is related to ?IGF-1 SDS, indicating the apparent impact of GnRHa on the GH-IGF-1 axis. The -202 A/C IGFBP-3 promoter polymorphism does not affect the growth velocity of GnRHa in CPP girls.
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KEYWORD
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Precocious puberty, Growth velocity, Insulin-like growth factor-1, Insulin-like growth factor binding protein-3, -202 A/C IGFBP-3, Promoter regions
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