Abstract
We assessed the main and interaction effects of interleukin-6 and estrogen receptor gene polymorphisms on bone mass accrual in Chinese adolescent girls. A total of 228 premenarche Chinese girls (9–11.5 years old) were recruited for a 2-year follow-up study. Bone mineral density (BMD) at the total body, lumbar spine (L1–L4), and total left hip were measured by dual-energy X-ray absorptiometry at baseline and follow-up. The −174G/C and −634C/G polymorphism of IL-6 gene, and PvuII and XbaI polymorphisms of the estrogen receptor (ER)-α gene, were determined. The −634C/G polymorphism of the IL-6 gene and PvuII polymorphism of ER-α gene were significantly associated with bone mass accrual after adjusting the potential confounding factors. Girls with pp genotype of ER-α gene had greater percentage accrual in BMD of total body (P = 0.010) and femoral intertrochanter (P = 0.038) than their PP and Pp counterparts. Girls with CC genotype of IL-6 −634G/C gene had higher percentage accrual in BMD of total body (P = 0.032) and femoral trochanter (P = 0.048) than their CG + GG counterparts. Significant interaction effects of IL-6 −634C/G polymorphism and ER-α PvuII polymorphism were observed on percentage change in BMD of total left hip (P = 0.009) and femoral intertrochanter (P = 0.007). The genotype CC (IL-6 −634C/G) × pp (ER-α PvuII) was associated with greater BMD accrual than other genotype combination in Chinese adolescent girls. We found that the IL-6 −634C/G and ER-α PvuII polymorphism were significantly associated with BMD accrual and that they have an interactional effect on BMD accrual in Chinese adolescent girls.
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Xing, L., He, Gp., Chen, Ym. et al. Interaction of interleukin-6 and estrogen receptor gene polymorphisms on bone mass accrual in Chinese adolescent girls. J Bone Miner Metab 26, 493–498 (2008). https://doi.org/10.1007/s00774-007-0844-y
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DOI: https://doi.org/10.1007/s00774-007-0844-y