Relationship between Calcitonin Receptor,Vitamin D Receptor Gene Polymorphism and Type 2 Diabetes Mellitus with Osteoporosis in Kunming Area
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摘要:
目的 研究降钙素受体(CTR)、维生素D受体(VDR)基因多态性与昆明地区2型糖尿病(T2DM)伴骨质疏松症的关系,探讨T2DM伴骨质疏松症发病的遗传易感因素。 方法 收集2017年6月至2019年1月在昆明市第一人民医院内分泌科住院的T2DM患者237例。(1)按骨密度结果分组为T2DM无骨质疏松组(61例),T2DM合并骨量减少组(111例),T2DM伴骨质疏松组(65例),采用PCR-RFLP技术,检测CTR和VDR基因型,比较3组患者以下指标间的差异:CTR和VDR基因型及等位基因频率,性别、年龄、糖尿病病程、血压、身高、体重、体重指数(BMI)、空腹血糖(FPG)、糖化血红蛋白(HbA1c)、血钙、血脂、血尿酸(UA)、维生素D浓度、雌激素、睾酮水平,超敏C-反应蛋白(Hs-CRP)、纤维蛋白原(FIB),口服葡萄糖耐量(OGTT)-0 h、2 h血糖,0 h、2 h胰岛素(INS)水平,胰岛素抵抗指数(HOMA-IR);(2)比较CTR联合VDR不同基因型组合间骨密度的差异; (3)将CTR联合VDR基因型组合及组间具有统计学差异的指标进行多因素Logistic回归分析。 结果 (1)3组患者比较,CTR联合VDR不同基因型组合差异均无统计学意义(P > 0.05);(2)CTR联合VDR 3种基因型组合比较,各部位的骨密度差异无统计学意义(P > 0.05);(3)多因素Logistic回归分析显示:年龄可进入回归方程,而CTR联合VDR基因型组合未进入回归方程。 结论 (1)年龄是昆明地区 T2DM伴骨质疏松患者的独立危险因素;(2) CTR联合VDR基因型与昆明地区 T2DM伴骨质疏松症的遗传易感性无关。 Abstract:Objective To study the relationship between calcitonin receptor (CTR), vitamin D dreceptor (VDR) gene polymorphism and type 2 diabetesmellitus (T2DM) with osteoporosis in kunming area, and to explore the pathogenesis of T2DM with osteoporosis genetic susceptibility factors. Methods We selected 237 diabetic patients in the department of endocrinology of First People’ s hospital of Kunming from 2017 to 2019. (1) The enrolled patients were divided into T2DM without osteoporosis group (61 cases) , T2DM with osteopenia group (111 cases), and T2DM with osteoporosis group (65 cases) by bone mineral density results. PCR - RFLP technique was used to test CTR and VDR genotypes, and the differences between the three groups of patients were compared in following indicators: CTR and VDR genotype and allele frequency, sex, age, duration of diabetes, blood pressure, height, weight, body mass index (BMI), fasting plasma glucose (FPG), glycosylated hemoglobin (HbA1c), blood calcium, blood lipids, blood uric acid (UA), the concentration of vitamin D, estrogen and testosterone levels, allergic C - reactive protein (Hs – CRP), fibrinogen (FIB), oral glucose tolerance (OGTT) – 0 h, 2 h; 0 h, 2 h-insulin (INS) level and insulin resistance index (HOMA-IR). (2) The differences in the bone mineral density were compared between patients with CTR joint VDR of different genotype combinations. (3)Multiariable logistic regression analysis was performed on the indicators with statistically significant difference in CTR joint VDR genotype combinations. Results (1) Three groups of patients were compared, CTR system joint VDR had no statistically significant difference in the different genotype combinations (P > 0.05). (2) Comparison of three genotype combination in CTR system joint VDR, the bone mineral density has no statistical significant difference (P > 0.05). (3) Multi-factor logistic regression analysis showed that age entered the regression equation of system and CTR system joint VDR genotype combinations did not enter the regression equation. Conclusions (1) Age is an independent risk factor in the kunming area of T2DM patients with osteoporosis. (2)CTR system joint VDR genotype combinations has nothing to do with the genetic susceptibility to T2DM with osteoporosis in kunming area . -
Key words:
- Calcitonin receptor /
- Vitamin D receptor /
- Gene polymorphism /
- Type 2 diabetes mellitus /
- Osteoporosis
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表 1 PCR扩增所使用的引物
Table 1. The primer PCR amplification
基因型 上游引物 下游引物 CTR 5′-CTCAGTGATCACGATACTGTG-3′ 5′- TTCAGT GGAACCAGCGTTGG-3′ VDR 5′-GAACCAAGACTACAAGTACCGCGTCAGTGA-3′ 5′-TGGCGGCAGCGGATGTACGTCTGC-3′ 表 2 研究对象的一般资料比较 [
$\bar x \pm s$ /M(P25,P75)]Table 2. Comparison of general data of study objects [
$\bar x \pm s$ /M(P25,P75)]指标 T2DM无骨质疏松组
(n = 61)T2DM合并骨量减少组
(n = 111)T2DM伴骨质疏松组
(n = 65)χ2/F/Z P 性别(男/女)) 46/15 61/50 15/50 18.286 < 0.001* 年龄(岁) 61.65 ± 8.16 64.79 ± 10.15 66.33 ± 6.77 4.573 0.011* 吸烟(是/否) 24/37 32/79 11/54 7.833 0.020* 饮酒(是/否) 17/44 29/82 6/59 8.518 0.014* 绝经年龄(女,岁) 50 (48 ,54 ) 50 (48 ,52 ) 50 (48 ,51 ) −0.744 0.457 糖尿病病程(a) 9.18 ± 7.34 10.11 ± 7.46 8.69 ± 7.36 0.805 0.449 收缩压 (mmHg) 126.77 ± 22.50 129.07 ± 19.73 125.77 ± 22.54 0.543 0.582 舒张压 (mmHg) 80.77 ± 11.51 78.64 ± 10.27 74.97 ± 12.30 4.364 0.014* 身高 (m) 167.64 ± 7.32 164.12 ± 8.04 158.13 ± 7.21 24.880 0.000* 体重 (kg) 71.02 ± 11.16 65.85 ± 9.94 59.07 ± 10.45 20.955 0.000* 体重指数(kg/m2) 25.26 ± 2.77 24.29 ± 2.75 23.40 ± 3.21 6.369 0.002* TC (mmol/L) 4.94 ± 1.59 4.57 ± 1.22 4.90 ± 1.02 2.122 0.122 TG (mmol/L) 2.13 (1.32,3.25 ) 1.65 (1.19,2.26 ) 1.79 (1.30,2.41 ) −2.163 0.051 HDLC (mmol/L) 1.09 ± 0.34 1.15 ± 0.28 1.23 ± 0.31 3.410 0.035* LDLC (mmol/L) 2.79 ± 1.14 2.82 ± 0.99 3.15 ± 1.01 2.389 0.094 FPG (mmol/L) 8.63 (7.31,12.29 ) 8.55 (6.85,11.19 ) 8.13 (6.58,10.97 ) −1.297 0.195 HBA1c (%) 8.60 ± 1.91 8.32 ± 2.04 8.06 ± 1.76 1.199 0.303 OGTT-0h (mmol/L) 8.09 ± 2.29 8.25 ± 2.06 8.13 ± 2.71 0.093 0.911 OGTT-2h (mmol/L) 17.86 ± 3.19 18.29 ± 4.60 17.81 ± 4.73 0.223 0.800 INS-0h (mIU/L) 15.36 (9.50,21.35 ) 15.64 (7.83,32.75 ) 15.23 (8.23,25.83 ) −0.426 0.670 INS-2h (mIU/L) 34.79 (23.12,58.31 ) 41.12 (25.93,67.58 ) 52.49 (35.09,81.46 ) −1.300 0.194 HOMR-IR 4.77 (2.69,9.08 ) 5.23 (2.65,11.2) 4.98 (2.37,8.86 ) −0.492 0.623 UA (mol/L) 354.05 ± 86.92 342.32 ± 99.48 314.82 ± 92.09 2.909 0.057 血钙 (mmol/L) 2.33 ± 0.11 2.31 ± 0.12 2.32 ± 0.12 0.722 0.487 雌激素
(pmol/L)116.90 (80.73,152.44,) 90.42 (60.97,140.19) 81.12 (58.63,98.22 ) −1.949 0.041* 睾酮(nmol/L) 9.13 (1.94,14.85 ) 5.17 (1.32,12.09 ) 1.57 (1.17,2.38 ) −2.281 0.023* 维生素D (ng/mL) 18.15 ± 9.72 16.78 ± 6.16 16.00 ± 5.71 1.403 0.248 Hs-CRP(mg/L) 1.72 (0.61,3.02 ) 1.70 (0.50,2.69 ) 1.06 (0.50,3.16 ) −0.368 0.713 FIB (g/L) 2.89 ± 0.70 2.77 ± 0.64 2.80 ± 0.72 0.599 0.550 *P < 0.05。 表 3 CTR联合VDR基因型分布频率比较[ n(%)]
Table 3. CTR system joint VDR genotypes distribution frequency comparison [n(%)]
组别/基因型 CCBB CC+Bb、 bb CT+BB、Bb、bb 合计(n) χ2 P T2DM无骨质疏松组 6(9.8) 43(70.5) 12(19.7) 61 T2DM合并骨量减少组 15(13.5) 68(61.3) 28(25.2) 111 T2DM伴骨质疏松组 7(10.8) 42(64.6) 16(24.6) 65 合计(n) 28 153 56 237 1.604 0.808 表 4 VDR联合CTR基因多态性与2型糖尿病患者BMD的关系(g/cm2)(
$\bar x \pm s$ )Table 4. The relationship between the CTR system joint VDR gene polymorphism and BMD of T2DM patients (g/cm2)(
$\bar x \pm s$ )BMD/分组 CCBB (n = 28) CC+Bb、bb( n = 153) CT+BB、Bb、bb(n = 56) F P 腰1 0.952 ± 0.154 0.946 ± 0.162 0.919 ± 0.178 0.518 0.597 腰2 1.008 ± 0.183 1.027 ± 0.186 0.984 ± 0.196 1.014 0.364 腰3 1.076 ± 0.174 1.063 ± 0.191 1.036 ± 0.200 0.478 0.621 腰4 1.125 ± 0.224 1.091 ± 0.211 1.050 ± 0.210 1.194 0.305 左股骨颈 0.872 ± 0.135 0.861 ± 0.187 0.855 ± 0.147 0.084 0.920 左大粗隆 0.763 ± 0.149 0.756 ± 0.154 0.756 ± 0.152 0.021 0.979 左全髋 0.935 ± 0.153 0.915 ± 0.220 0.925 ± 0.138 0.134 0.875 右股骨颈 0.842 ± 0.222 0.843 ± 0.281 0.857 ± 0.142 0.061 0.941 右大粗隆 0.731 ± 0.208 0.730 ± 0.237 0.746 ± 0.131 0.101 0.904 右全髋 0.907 ± 0.242 0.919 ± 0.157 0.924 ± 0.128 0.084 0.920 表 5 Logistic回归分析结果
Table 5. Logistic analysis results
因素 B SE Wald P OR 95%CI CTR+VDR 0.045 0.329 0.019 0.891 1.046 0.549~1.993 性别 −0.181 0.794 0.052 0.819 0.834 0.176~3.953 年龄 0.085 0.027 9.969 0.002 1.089 1.033~1.148 吸烟 0.081 0.587 0.019 0.890 1.085 0.343~3.426 饮酒 0.892 0.581 2.356 0.125 2.439 0.781~7.614 DBP −0.012 0.017 0.463 0.496 0.988 0.956~1.022 身高 −0.060 0.062 0.926 0.336 0.942 0.833~1.064 体重 −0.007 0.067 0.010 0.919 0.993 0.871~1.133 BMI −0.110 0.186 0.350 0.554 0.896 0.622~1.290 HDL-C 0.533 0.651 0.672 0.413 1.704 0.476~6.099 雌激素 0.001 0.003 0.040 0.841 1.001 0.996~1.006 睾酮 −0.067 0.053 1.597 0.206 0.935 0.842~1.038 参考类别说明:“CTR+VDR基因型”中的CCBB型,“性别”以女性,“吸烟”以不吸烟,“饮酒”以不饮酒,“糖尿病有无骨质疏松”以糖尿病无骨质疏松作为参考类别。 -
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