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Polymorphism of the vitamin D3 receptor gene and bone mineral density in girls with functional hypothalamic amenorrhea subjected to oestroprogestagen treatment
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Abstract
Material and methods: The study included 84 FHA girls and 50 controls. FHA patients underwent a four-year sequential EP therapy with 17-β oestradiol (2 mg from the 2nd to 25th day of the menstrual cycle) and didrogesterone (10 mg from the 16th to the 25th day). Their hormonal parameters were monitored along with bone turnover marker levels and bone mineral density (BMD). Additionally, the VDR gene BsmI polymorphism was determined.
Results: Hormonal therapy was reflected by a substantial improvement of BMD. However, the values of BMD observed after four years of treatment in FHA patients were still significantly lower than baseline bone mineral density determined in the control group (1.007 ± 0.100 vs. 1.141 ± 0.093 g/cm2, respectively; p < 0.001). No significant effects of the VDR genotype were observed on the dynamics of BMD during consecutive years of hormonal treatment and mean bone mineral density determined after completing the therapy (1.006 ± 0.101 vs. 1.013 ± 0.114 vs. 1.006 ± 0.094 g/cm2 for BB, bb and Bb genotypes, respectively; p = 0.973).
Conclusions: This study did not confirm that VDR polymorphism can modulate therapeutic outcome of FHA girls subjected to the hormonal treatment. Nonetheless, this study confirmed the effectiveness of EP therapy in the simultaneous treatment of menstrual disorders and the normalisation of bone mineral density in FHA patients. (Pol J Endocrinol 2011; 62 (6): 492–498)
Abstract
Material and methods: The study included 84 FHA girls and 50 controls. FHA patients underwent a four-year sequential EP therapy with 17-β oestradiol (2 mg from the 2nd to 25th day of the menstrual cycle) and didrogesterone (10 mg from the 16th to the 25th day). Their hormonal parameters were monitored along with bone turnover marker levels and bone mineral density (BMD). Additionally, the VDR gene BsmI polymorphism was determined.
Results: Hormonal therapy was reflected by a substantial improvement of BMD. However, the values of BMD observed after four years of treatment in FHA patients were still significantly lower than baseline bone mineral density determined in the control group (1.007 ± 0.100 vs. 1.141 ± 0.093 g/cm2, respectively; p < 0.001). No significant effects of the VDR genotype were observed on the dynamics of BMD during consecutive years of hormonal treatment and mean bone mineral density determined after completing the therapy (1.006 ± 0.101 vs. 1.013 ± 0.114 vs. 1.006 ± 0.094 g/cm2 for BB, bb and Bb genotypes, respectively; p = 0.973).
Conclusions: This study did not confirm that VDR polymorphism can modulate therapeutic outcome of FHA girls subjected to the hormonal treatment. Nonetheless, this study confirmed the effectiveness of EP therapy in the simultaneous treatment of menstrual disorders and the normalisation of bone mineral density in FHA patients. (Pol J Endocrinol 2011; 62 (6): 492–498)
Keywords
bone mineral density; vitamin D3 receptor; functional hypothalamic amenorrhea; hormone replacement therapy; osteoporosis
About this articleTitle
Polymorphism of the vitamin D3 receptor gene and bone mineral density in girls with functional hypothalamic amenorrhea subjected to oestroprogestagen treatment
Journal
Issue
Article type
Original paper
Pages
492-498
Published online
2011-12-06
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508
Article views/downloads
1324
Bibliographic record
Endokrynol Pol 2011;62(6):492-498.
Keywords
bone mineral density
vitamin D3 receptor
functional hypothalamic amenorrhea
hormone replacement therapy
osteoporosis
Authors
Elżbieta Sowińska-Przepiera
Elżbieta Andrysiak-Mamos
Justyna Syrenicz
Grażyna Jarząbek-Bielecka
Zbigniew Friebe
Anhelli Syrenicz
