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The analysis of endocrine disruptors in patients with central precocious puberty

Authors
 Mo Kyung Jung  ;  Han Saem Choi  ;  Junghwan Suh  ;  Ahreum Kwon  ;  Hyun Wook Chae  ;  Woo Jung Lee  ;  Eun-Gyong Yoo  ;  Ho-Seong Kim 
Citation
 BMC PEDIATRICS, Vol.19(1) : 323, 2019 
Journal Title
 BMC PEDIATRICS 
Issue Date
2019
Keywords
Bisphenol A ; Central precocious puberty ; Phthalates
Abstract
BACKGROUND: A few studies have reported a positive association between phthalate exposure and pubertal timing, but several conflicting reports exist. The main objective of the study was to determine whether phthalate exposure was associated with central precocious puberty in girls. METHODS: This was a multicenter case-control study wherein 47 girls with central precocious puberty (CPP) and 47 controls (26 pre-pubertal girls and 21 pubertal girls) were enrolled. No obese girls were included. Five phthalate metabolites (creatinine adjusted) and bisphenol A (BPA) were measured in the first spot urine samples of these 94 girls in the early morning. RESULTS: The median values of monobenzyl phthalate (MBzP), mono-2-ethyl-5-carboxypentyl phthalate (MECPP), mono-2-ethyl-5-hydroxyhexyl phthalate (MEHHP), mono-2-ethyl-5-oxohexyl phthalate (MEOHP), and mono-n-butyl phthalate (MnBP) were 3.1, 29.3, 18.0, 15.4, and 25.2 μg/g creatinine in the CPP group, 4.3, 53.7, 35.7, 29.1, and 66.0 μg/g creatinine in the pre-pubertal control group, and 1.7, 28.7, 21.4, 12.1, and 33.3 μg/g creatinine in the pubertal control group, respectively. The urinary concentration of the five phthalates was significantly lower in the CPP group than in the pre-pubertal control group (P < 0.001). Conversely, there was no significant difference in the urinary concentration of the five phthalates between the CPP and pubertal control groups (P values: 0.077 for MBzP, 0.733 for MECPP, 0.762 for MEHHP, 0.405 for MEOHP, and 0.981 for MnBP). In addition, the BPA level was not significantly different between the CPP and pubertal control groups (BPA median values: 0.63 μg/g creatinine, the CPP group; 1.7 μg/g creatinine, the pubertal control group; P value = 0.092). CONCLUSIONS: Our study showed that there was no significant difference in the urinary phthalate levels between the CPP and pubertal control groups. Moreover, phthalate metabolites were significantly lower in the CPP group than in the pre-pubertal control group. Further investigation about endocrine disruptors and pubertal progression is needed.
Files in This Item:
T201904255.pdf Download
DOI
10.1186/s12887-019-1703-4
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Ah Reum(권아름) ORCID logo https://orcid.org/0000-0002-9692-2135
Kim, Ho Seong(김호성) ORCID logo https://orcid.org/0000-0003-1135-099X
Suh, Junghwan(서정환) ORCID logo https://orcid.org/0000-0002-2092-2585
Chae, Hyun Wook(채현욱) ORCID logo https://orcid.org/0000-0001-5016-8539
Choi, Han Saem(최한샘) ORCID logo https://orcid.org/0000-0003-4140-0345
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/173179
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