The effect of triptorelin and leuprolide on the level of sex hormones in girls with central precocious puberty and its clinical efficacy analysis

BACKGROUND: This study aimed to explore the effects of triptorelin and leuprolide on serum hormone levels and the clinical efficacy of girls with idiopathic central precocious puberty (ICPP). METHODS: Retrospective analysis was performed on 128 girls with ICPP who were diagnosed and treated in our hospital from January 2017 to January 2020, including 71 girls in the leuprolide group and 57 girls in the triptorelin group. The differences of serum sex hormone level, ovarian volume, uterine volume, follicle diameter, bone age, growth rate (height change within half a year), maturity (bone age/living age), and other aspects between the two groups of girls were compared. RESULTS: Before treatment, there was no significant difference in the baseline levels of sex hormones [estradiol (E2), luteinizing hormone (LH), follicle-stimulating hormone (FSH)] between the triptorelin group and the leuprorelin group (P>0.05). After 1 year of treatment, serum levels of E2 and FSH in the triptorelin group were lower than those in the leuprolide group (P<0.05). There was no significant difference in LH levels between the two groups after 1 year of treatment (P>0.05). At baseline, there was no significant difference in the ovarian volume, follicle diameter, and uterine volume between the triptorelin group and the leuprolide group (P>0.05). After 1 year of treatment, the ovarian volume, follicle diameter, and uterine volume of the girls in the triptorelin group were all lower than those in the leuprolide group (P<0.05). Before treatment, there was no statistical difference in bone age, growth rate, and maturity between the triptorelin group and the leuprolide group (P>0.05). After 1 year of treatment, the growth rate and maturity of participants in the triptorelin group were lower than those in the leuprolide group (P<0.05). There was no significant difference in bone age between the two groups after 1 year of treatment (P>0.05). CONCLUSIONS: For girls with ICPP, triptorelin is superior to leuprolide in reducing sex hormone level, reducing uterine volume, follicle diameter, ovarian volume, slowing down the growth rate, and decreasing maturity. Triptorelin should be selected as a priority for the treatment of girls with ICPP.