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Telomere length is not altered in girls with idiopathic central precocious puberty treated with a GnRH analog – leuprolide acetate

Abstract Background Idiopathic central precocious puberty (iCPP) presents a disproportionate advancement of bone age and maturation, as well as metabolic and endocrinological changes that may be related to effects on telomere biology. Objective To investigate the telomere length in iCPP girls treated with GnRHa. Study design Observational case-control study with 85 girls, including 45 iCPP treated with GnRHa and 40 controls. It was analyzed age, height, weight and body mass index (BMI), insulin, triglycerides, testosterone, insulin resistance by HOMA, and telomere length by real-time PCR. Statistical analyses were determined by Wilcoxon test and Spearman correlation was carried out. Results Weight, BMI, insulin level and HOMA index were higher in the iCPP than in the control group (p < .01); without difference between mean ages. The telomere length did not differ between iCPP and control group. However, a negative correlation was observed between the telomere length and age in iCPP (p = .0009) and control group (p = .014), and weight in the iCPP (p = .017). Conclusions We did not observe any difference in the telomere length in the iCPP and control group. Even though, some characteristics of the disease, such as increased weight and body fat, negatively influence the telomere biology.