Ann Pediatr Endocrinol Metab.  2017 Sep;22(3):176-182. 10.6065/apem.2017.22.3.176.

Insulin resistance and bone age advancement in girls with central precocious puberty

• Hur JH
• Park S
• Jung MK
• Kang SJ
• Kwon A
• Chae HW
• Kim HS
• Kim DH

• KMID: 2396137
• DOI: http://doi.org/10.6065/apem.2017.22.3.176

Abstract

PURPOSE
Precocious puberty has significantly increased recently. While obesity is associated with puberty timing, the relationship between obesity and central precocious puberty (CPP) remains controversial. The purpose of this study was to determine whether insulin resistance is associated with bone age (BA) advancement in girls with CPP.
METHODS
We retrospectively analyzed the records of 804 girls referred for puberty evaluation. Anthropometric measurements, BA, sex hormone, sex hormone binding globulin (SHBG), and insulin levels, lipid profiles, and gonadotropin releasing hormone stimulation tests were assessed. Insulin resistance parameters were calculated using the homeostasis model assessment-insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI) models.
RESULTS
BA, BA advancement, free estradiol index, insulin, and HOMA-IR increased significantly in girls with high body mass index (BMI) compared with that of girls with low BMI in cases of CPP. HOMA-IR was positively correlated with BA advancement and BMI but negatively correlated with SHBG. QUICKI was negatively correlated with BA advancement and BMI and positively correlated with SHBG. When HOMA-IR increased by 1, the odds for BA advancement increased 120% after adjusting for age and BMI (P=0.033).
CONCLUSION
Insulin resistance could be associated with BA advancement in girls with CPP.

Keyword

Precocious puberty; Luteinizing hormone; Gonadotropin-releasing hormone

MeSH Terms

Adolescent
Body Mass Index
Estradiol
Female*
Gonadotropin-Releasing Hormone
Homeostasis
Humans
Insulin Resistance*
Insulin*
Luteinizing Hormone
Obesity
Puberty
Puberty, Precocious*
Retrospective Studies
Sex Hormone-Binding Globulin
Estradiol
Gonadotropin-Releasing Hormone
Insulin
Luteinizing Hormone
Sex Hormone-Binding Globulin

Figure

• 

  Fig. 1. Summary of patients and study design in this study. CPP*, non-CPP†, and control‡. CPP, central precocious puberty; GnRH, gonadotropin releasing hormone; LH, luteinizing hormone.

Reference

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