Abstract
Objective To explore the relationship of zearalenone (ZEA) and precocious puberty in girls. Methods The peripheral serums from 71 cases of precocious puberty girls and 50 cases of healthy girls were collected respectively and concentrations of ZEA were detected by high performance liquid chromatography.Bone age, body mass index (BMI), volume of uterus and ovaries, concentrations of estradiol (E2), luteinizing hormone (LH) and follicle-stimulating hormone (FSH) were detected, and the residence of each subject was recorded as well. Results (1)In 71 patients, 52 patients were diagnosed as idiopathic central precocious puberty, others were diagnosed as premature thelarche.(2) In 71 patients, serum ZEA was detected from 51 patients, and undetected in 20 patients.(3)Concentration of ZEA in precocious puberty girls [(318±34) ng/L ]was significantly increased than that in healthy girls [(143±35) ng/L, P=0.002], but no distinct difference existed between ICPP group and PT group(P=0.326). (4)Compared with uterus volume of ZEA in the undetected patients (1.975±0.150)cm3, the uterus volume of ZEA detected patients (2.972±0.180) cm3, which was significantly enlarged, there was significant difference (P=0.01); Percentage of overweight girls in ZEA detected patients (31.4%, 16/51 cases) was lower than which in ZEA undetected patients (65.0%, 13/20 cases, P=0.01); Although there was no statistical differences in the breast diameter, bone age, value of E2, LH and FSH between ZEA detected patients and undetected patients(all P>0.05), but the increased tendency in ZEA detected patients existed.(5) ZEA in serum was detected in 53.3%(16/30 cases) patients living in the cities, and the rate was obviously lower than 82.9% of the patients (34/41 cases) living in the countryside, there was significant difference (P=0.007). Conclusions ZEA is correlated with precocious puberty in girls.ZEA pollution might be one of reasons for precocious puberty occurrence. Key words: Precocious puberty; Environmental endocrine disruptors; Zearalenone; Food safety
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