Thyroid function in girls with central precocious puberty

Geehae Jung, Seok Bin Oh, Won Young Lee, Hye Ryun Kim, Hyo-Kyoung Nam, Jae Hyun Kim, Young-Jun Rhie, Kee Hyoung Lee

Research output: Contribution to journalArticle

Abstract

Purpose: Obesity is a well-known risk factor for central precocious puberty (CPP). Recently, elevated thyroid stimulating hormone (TSH) was reported in obese youth. However, few data regarding the relationship between CPP and TSH are available. The aim of this study was to evaluate thyroid function in girls with CPP and the relationship between CPP and serum TSH concentration. Methods: This was a retrospective cross-sectional study. A total of 1,247 girls aged between 6.0 and 8.9 years who had undergone a gonadotropin-releasing hormone (GnRH) stimulation test to determine the presence of puberty were studied. Subjects were classified into CPP (n=554) and non-CPP (n=693) groups according to the results of the GnRH stimulation test. Characteristics and laboratory data of the CPP and non-CPP groups were compared and correlations between those characteristics and laboratory data and TSH concentration were evaluated. Serum TSH concentration in the CPP group was higher than that of the non-CPP group (3.19±1.55 mIU/L vs. 2.58±1.34 mIU/L, P<0.001). Results: Serum free thyroxine (fT4) concentration in the CPP group was notably lower than that of the non-CPP group (1.38±0.14 ng/dL vs. 1.44±0.18 ng/dL, P<0.001). Across all subjects, 149 girls (11.9%) had hyperthyrotropinemia. The prevalence of hyperthyrotropinemia was higher in the CPP group compared to the non-CPP group (15.7% vs. 8.9%, P<0.001). TSH concentrations were positively correlated with age, height, weight, BMI, bone age, bone age advance, insulin-like growth factor 1 (IGF-1), IGF-1 standard deviation score, basal luteinizing hormone (LH), peak LH and basal follicle-stimulation hormone. TSH concentrations were negatively correlated with fT4. Multiple linear regression analysis showed that age (β=0.548, P<0.001) and peak LH (β=0.019, P=0.008) were independently associated with serum TSH concentration. Conclusion: Hyperthyrotropinemia in girls with CPP tends to be associated with pubertal LH elevation. In conclusion, pubertal onset may be associated with thyroid function.

Original languageEnglish
Pages (from-to)124-128
Number of pages5
JournalAnnals of Pediatric Endocrinology and Metabolism
Volume24
Issue number2
DOIs
Publication statusPublished - 2019 Jun 1

Fingerprint

Thyrotropin
Thyroid Gland
Precocious Puberty
Luteinizing Hormone
Somatomedins
Serum
Gonadotropin-Releasing Hormone
Central Precocious Puberty
Puberty
Thyroxine
Linear Models
Obesity
Cross-Sectional Studies
Regression Analysis
Hormones
Weights and Measures
Bone and Bones

Keywords

  • Obesity
  • Precocious puberty
  • Thyroid hormone

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Endocrinology, Diabetes and Metabolism

Cite this

Thyroid function in girls with central precocious puberty. / Jung, Geehae; Oh, Seok Bin; Lee, Won Young; Kim, Hye Ryun; Nam, Hyo-Kyoung; Kim, Jae Hyun; Rhie, Young-Jun; Lee, Kee Hyoung.

In: Annals of Pediatric Endocrinology and Metabolism, Vol. 24, No. 2, 01.06.2019, p. 124-128.

Research output: Contribution to journalArticle

Jung, Geehae ; Oh, Seok Bin ; Lee, Won Young ; Kim, Hye Ryun ; Nam, Hyo-Kyoung ; Kim, Jae Hyun ; Rhie, Young-Jun ; Lee, Kee Hyoung. / Thyroid function in girls with central precocious puberty. In: Annals of Pediatric Endocrinology and Metabolism. 2019 ; Vol. 24, No. 2. pp. 124-128.
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abstract = "Purpose: Obesity is a well-known risk factor for central precocious puberty (CPP). Recently, elevated thyroid stimulating hormone (TSH) was reported in obese youth. However, few data regarding the relationship between CPP and TSH are available. The aim of this study was to evaluate thyroid function in girls with CPP and the relationship between CPP and serum TSH concentration. Methods: This was a retrospective cross-sectional study. A total of 1,247 girls aged between 6.0 and 8.9 years who had undergone a gonadotropin-releasing hormone (GnRH) stimulation test to determine the presence of puberty were studied. Subjects were classified into CPP (n=554) and non-CPP (n=693) groups according to the results of the GnRH stimulation test. Characteristics and laboratory data of the CPP and non-CPP groups were compared and correlations between those characteristics and laboratory data and TSH concentration were evaluated. Serum TSH concentration in the CPP group was higher than that of the non-CPP group (3.19±1.55 mIU/L vs. 2.58±1.34 mIU/L, P<0.001). Results: Serum free thyroxine (fT4) concentration in the CPP group was notably lower than that of the non-CPP group (1.38±0.14 ng/dL vs. 1.44±0.18 ng/dL, P<0.001). Across all subjects, 149 girls (11.9{\%}) had hyperthyrotropinemia. The prevalence of hyperthyrotropinemia was higher in the CPP group compared to the non-CPP group (15.7{\%} vs. 8.9{\%}, P<0.001). TSH concentrations were positively correlated with age, height, weight, BMI, bone age, bone age advance, insulin-like growth factor 1 (IGF-1), IGF-1 standard deviation score, basal luteinizing hormone (LH), peak LH and basal follicle-stimulation hormone. TSH concentrations were negatively correlated with fT4. Multiple linear regression analysis showed that age (β=0.548, P<0.001) and peak LH (β=0.019, P=0.008) were independently associated with serum TSH concentration. Conclusion: Hyperthyrotropinemia in girls with CPP tends to be associated with pubertal LH elevation. In conclusion, pubertal onset may be associated with thyroid function.",
keywords = "Obesity, Precocious puberty, Thyroid hormone",
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AU - Jung, Geehae

AU - Oh, Seok Bin

AU - Lee, Won Young

AU - Kim, Hye Ryun

AU - Nam, Hyo-Kyoung

AU - Kim, Jae Hyun

AU - Rhie, Young-Jun

AU - Lee, Kee Hyoung

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