| Summary: | Jun Li,1,* YanXia Ren,1,* SiYuan Li,2 JiaJia Li3 1Endocrinology and Metabolism Department, First Affiliated Hosptital, School of Medicine, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region, People’s Republic of China; 2Shihezi University School of Medicine, Shihezi, Xinjiang Uygur Autonomous Region, People’s Republic of China; 3Endocrinology and Metabolism Department, Second People’s Hospital of Nanyang, Nanyang, Henan Province, People’s Republic of China*These authors contributed equally to this workCorrespondence: Jun Li Email xjlijun@163.comBackground: The Wnt signaling pathway plays a valuable role in bone metabolism. SOST is a major inhibitor of the Wnt signaling pathway. The expression of SOST and genetic polymorphism might be associated with bone mineral density in postmenopausal women with type 2 diabetes mellitus (T2DM).Objective: This study aims to explore whether SOST protein expression and genetic locus rs851056, rs1230399 polymorphism is associated with bone mineral density in postmenopausal women with T2DM in Xinjiang.Methods: A total of 136 Xinjiang postmenopausal women were divided into four groups: A (-/-), B (±), C (-/+), and D (+/+) by assessing their OGTT and bone mass. Genetic polymorphisms were determined using the mass ARRAY mass spectrometer.Results: 1) Genotypes and allele frequencies at rs851056 were statistically significant differences in groups B and D patients compared to group A, respectively. 2) Individuals carrying the GG genotype had lower HDL, Ca, and ALP as compared to those carrying the GC/CC genotypes in group C. In contrast, individuals carrying the GG genotype had higher BMD (L1-4) as compared to those carrying the GC/CC genotypes in group D. 3) SOST protein expression levels were higher in groups C and D than in group A. 4). BMD (L1-4) was negatively correlated with SOST protein. 5) Multiple linear regression analysis for BMD-dependent variables showed that the decrease of BMI and TG were risk factors for BMD (L1-4), besides, the decrease of BMI, ALP, and extended years of menopause were all risk factors for BMD (femoral neck).Conclusion: SOST protein expression and genetic locus rs851056, rs1230399 polymorphism are associated with bone mineral density in postmenopausal women with type 2 diabetes mellitus in Xinjiang.Keywords: SOST gene polymorphism, gene mutation, type 2 diabetes mellitus, osteoporosis, bone mineral density, SOST protein
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