Correlation of TNFAIP3 gene polymorphism with osteoporotic fractures and bone metabolism in elderly patients / 中华内分泌外科杂志

ABSTRACT

Objective:To investigate the correlation between TNFAIP3 gene polymorphism and osteoporotic fractures in the elderly and bone metabolism indexes.Methods:A total of 115 patients with senile osteoporotic fractures admitted to Peace Hospital Affiliated to Shanxi Changzhi Medical College from Jan. 2019 to Jun. 2021 were enrolled as the observation group, and 120 patients with senile osteoporotic fractures matched with gender, age and body mass index of the observation group were selected as the control group. The levels of blood calcium, blood phosphorus, alkaline phosphatase, 25-hydroxyvitamin D and other bone metabolism indexes of all subjects were recorded. The genotypes of rs10499194 and rs13207033 in TNFAIP3 gene were analyzed by capillary electrophoresis and fragment analysis (SNaPshot) . The mRNA relative expression level of TNFAIP3 gene in peripheral blood of all subjects was determined by quantitative real-time fluorescence quantitative polymerase chain reaction.Results:There were statistically significant differences in genotype distribution and gene frequency of RS10499194 and RS13207033 between the observation group and the control group ( P<0.05) . For rs10499194, CT genotype carriers had a significantly higher risk of fracture than wild-type CC genotype carriers [OR=3.253 (1.223-8.652) , P=0.014]. The dominant model was also statistically significant ( P=0.003) . For rs13207033, GA carriers had a significantly higher risk of fracture than wild-type GG carriers [OR=3.775 (1.192-11.952) , P= 0.016]. The dominant model was statistically significant ( P=0.009) . The blood calcium level in AA+GA group was significantly higher than that in GG group at rs13207033 site ( P=0.006) . The mRNA expression level of TNFAIP3 gene in the observation group was 1.41±0.09, which was significantly lower than that in the observation group (2.07±0.12, t=6.69, P<0.001) . TNFAIP3 mRNA expression level of rs10499194 site TT+CT group was 1.35±0.11, significantly lower than CC group 1.43±0.13 ( t=2.82, P=0.007) . Conclusion:The polymorphism of TN-FAIP3 gene is related to the occurrence of osteoporotic fractures and bone metabolism, and may affect the gene expression level.