摘要目的:探讨初诊2型糖尿病（T2DM）患者血糖波动与颈动脉内中膜厚度（CIMT）的关系及脂肪细胞因子Betatrophin的预测价值。方法:选择2018年6月至2019年12月就诊于太原市中心医院的初诊T2DM患者180例，根据颈动脉超声结果分为内中膜正常组（81例）、内中膜增厚组（60例）、斑块形成组（39例）。比较三组体测指标、糖脂代谢指标、血糖波动情况及Betatrophin水平，分析CIMT与各指标的相关性及其危险因素。结果:斑块形成组、内中膜增厚组血糖波动幅度（AGE）的平均和最大值均显著大于内中膜正常组［（5.08±0.62）、（4.06±0.54）比（3.17±0.41）mmol/L和（5.20±0.72）、（4.26±0.54）比（3.34±0.59）mmol/L］，且斑块形成组均显著大于内中膜增厚组（均 P<0.05）。内中膜增厚组和斑块形成组Betatrophin水平均显著高于内中膜正常组［（423.35±76.24）和（490.68±97.84）比（358.29±92.27）ng/L］（均 P<0.05）；斑块形成组臀围和三酰甘油均显著高于内中膜正常组、内中膜增厚组［（103.5±6.3）比（97.6±7.0）、（99.5±7.4）cm和2.99（1.32，3.92）比1.70（1.21，2.39）、1.84（1.43，2.93）mmol/L］（均 P<0.05），腰围、收缩压、空腹血糖、总胆固醇、稳态模型胰岛素抵抗指数（HOMA-IR）水平均显著高于内中膜正常组［（94.0（86.0，102.0）比88.0（82.5，94.0）cm、（136.2±18.0）比（125.9±15.3） mmHg，10.16（8.43，13.23）比8.49（6.98，9.97）mmol/L、（6.31±0.90）比（4.99±0.99）mmol/L、4.90（3.50，7.13）比2.77（1.32，5.07）］（均 P<0.05）。CIMT与腰围、臀围、收缩压、空腹血糖、总胆固醇、三酰甘油、HOMA-IR、Betatrophin、平均AGE、最大AGE、血糖波动系数均呈正相关（均 P<0.05），与葡萄糖目标范围内时间呈负相关（ P<0.05），且平均AGE、最大AGE、总胆固醇、三酰甘油、Betatrophin是CIMT的独立危险因素（均 P<0.05）。 结论:初诊T2DM患者血糖波动与CIMT密切相关，同时Betatrophin有望成为糖尿病大血管病变的早期预测因子。

abstractsObjective:To investigate the relationship between blood glucose fluctuation and carotid intima-media thickness (CIMT) in newly diagnosed patients with type 2 diabetes mellitus (T2DM) and the predictive value of betatrophin.Methods:A total of 180 newly diagnosed T2DM patients in Taiyuan Central Hospital from June 2018 to December 2019 were included for the study. And they were divided into normal intima-media group (81 cases), intima-media thickening group (60 cases) and plaque formation group (39 cases) according to the results of carotid ultrasound. The body test indexes, glucose and lipid metabolism indexes, blood glucose fluctuation and betatrophin level were compared among the three groups, and the correlation of these indexes with CIMT and risk factors of CIMT were analyzed.Results:The mean and maximal amplitude of glycemic excursions (AGE) in the plaque formation group and intima-media thickening group were significantly higher than those in the normal intima-media group [(5.08±0.62), (4.06±0.54) vs (3.17±0.41) mmol/L and (5.20±0.72), (4.26±0.54) vs (3.34±0.59) mmol/L] (all P<0.05), and these indexes in the plaque formation group were significantly higher than the intima-media thickening group (all P<0.05). Betatrophin levels in intima-media thickening group and plaque formation group were significantly higher than those in normal intima-media group [(423.35±76.24) and (490.68±97.84) vs (358.29±92.27) ng/L] (both P<0.05). Hip circumference and triglyceride (TG) in plaque formation group were obviously higher than those of the normal intima-media group and intima-media thickening group [(103.5±6.3) vs (97.6±7.0), (99.5±7.4) cm and 2.99 (1.32, 3.92) vs 1.70 (1.21, 2.39), 1.84(1.43, 2.93) mmol/L] (all P<0.05), and waist circumference, systolic blood pressure, fasting blood glucose (FBG), total cholesterol (TC), insulin resistance of homeostasis model assessment (HOMA-IR) levels in plaque formation group were significantly higher than those in normal intima-media group [(94.0 (86.0, 102.0) vs 88.0 (82.5, 94.0) cm, (136.2±18.0) vs (125.9±15.3) mmHg, 10.16 (8.43, 13.23) vs 8.49 (6.98, 9.97) mmol/L, (6.31±0.90) vs (4.99±0.99) mmol/L, 4.90 (3.50, 7.13) vs 2.77 (1.32, 5.07)] (all P<0.05). CIMT was positively correlated with waist circumference, hip circumference, systolic blood pressure (SBP), FBG, TC, TG, HOMA-IR, betatrophin, the mean and maximal AGE, blood glucose fluctuation coefficient (BGFC) (all P<0.05), and it was negatively correlated with time in range (TIR) ( P<0.05). The mean and maximal AGE, TC, TG and betatrophin were independent risk factors of CIMT (all P<0.05). Conclusion:Blood glucose fluctuation is closely related to CIMT in patients with T2DM, and betatrophin is expected to be an early predictor of diabetic macroangiopathy.