新诊断2型糖尿病患者补充阿法骨化醇对血糖控制及胰岛功能的影响
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新诊断2型糖尿病患者补充阿法骨化醇对血糖控制及胰岛功能的影
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目的觀察新诊断2型糖尿病(T2DM)患者维生素D(VitD)缺乏的比例及补充阿法骨化醇对新诊断T2DM患者血糖控制及胰岛功能的影响。方法选取2015年6月—2016年6月于汉中市中心医院就诊的新诊断T2DM患者150例检测25-羟维生素D(25(OH)D)水平,将25(OH)D水平不足及缺乏的114例作为治疗组,抽取未检测25(OH)D水平的新诊断T2DM患者80例作为对照组。两组患者均接受口服降糖药物治疗,治疗组额外添加阿法骨化醇0.25 μg,1次/d,口服。治疗3个月时观察两组血糖控制情况;6个月时再观察两组血糖控制情况及空腹胰岛素(FINS)、血钙(Ca2+)、血磷(P)水平,通过稳态模型计算β细胞功能指数及胰岛素抵抗指数并与基线情况比较。结果新诊断T2DM 患者维生素D不正常的比例达76%(VitD不足24.7%,VitD缺乏51.3%)。观察3个月时,治疗组2 hPG和HhA1c下降程度大于对照组;6个月时,2 hPG、HhA1c 两组间差异有统计学意义;治疗组HOMA-β指数较基线升高;胰岛素抵抗指数降低,两组间差异有统计学意义(P<0.05)。两组血Ca2+、血P水平差异无统计学意义。结论新诊断T2DM人维生素D缺乏及不足达76%,小剂量补充阿法骨化醇,可改善新诊断T2DM人胰岛β细胞功能、降低胰岛素抵抗,有助于血糖控制,临床使用安全。
标签:糖尿病2型;阿法骨化醇;血糖控制;胰岛功能
[Abstract] Objective To observe the insufficiency proportion of vitamin D in newly diagnosed type 2 Diabetes (T2DM)Patients and the effect of supplement of alfacalcidol on the islet - βcell function and glycemic control of T2DM patients. Methods From June 2015 to June 2016,150 newly diagnosed T2DM patients were enrolled to test 25(OH)D in the Hanzhong Central Hospital. 114 patients who lack of 25(OH)D were taken as treatment group and 80 newly diagnosed T2DM patients who did not test 25(OH)D were regarded as a contrast group. Both of the groups received orally - taken Hypoglycemic Agent,and the treatment group was orally given 0.25 μg alfacalcidol once a day. In the third month of the intervention,the level of glycemic control were tested. In the sixth month of the intervention,FBG,2 hPG,HbA1c,fasting Insulin (FINS),serum calcium(Ca2+),and serum phosphorus(P)were test. The index of HOMA-βcell and the insulin resistance were calculated through the Homeostasis model,and then compared with the baseline. Results The percentage of abnormal level of Vitamin D in Newly diagnosed type 2 Diabetes Patients reached to 76%(inadequate incidence of 24.7% and deficiency incidence of 51.3%). In the third month of the intervention,2 hPG、HbA1c more percentage in the treatment group decreased than the contrast group. In the sixth month of the treatment,the level of 2 hPG、HbA1c of two groups of patients still has statistical significance;the HOMA-βcell function index of treatment group was ascending above the baseline,and insulin resistance index was declining,with a
statistical difference between the two groups(P <0.05 ). There were no obvious differences in serum Ca2+ and serum P between the two groups. Conclusion The percentage of Vitamin D deficiency or insufficiency in newly diagnosed type 2 Diabetes Patients reached to 76%. The supplement in small dose of alfacalcidol can improve islet-β cell function,glycemic control,and reduce insulin resistance of newly diagnosed T2DM patients,which indicates that the treatment are safe and can be clinical applied.[Key words] Diabetes type 2;Alfacalcidol;Glycemic control;Islet - β c ell function
维生素D(VitD)作为一种脂溶性维生素,除了参与钙磷代谢、免疫应答及细胞增殖分化等多种生理过程外,近年来与糖尿病及其慢性并发症的关系日益受到人们重视。众多研究表明,Vit D作为营养因素和免疫调节因子可能对糖代谢发挥重要作用[1]。但目前对我国T2DM患者VitD缺乏的情况及对该人群是否需要常规补充VitD仍存在争议。该研究旨在观察新诊断T2DM患者中VitD缺乏的比例,以及补充阿法骨化醇对新诊断T2DM患者血糖控制、胰岛功能的影响及临床治疗的安全性,为T2DM的防治提供参考,现报道如下。
1 资料与方法
1.1 一般资料
选取2015年6月—2016年6月于该院就诊的T2DM患者150例,诊断符合WHO 1999年诊断标准,且病程≤1年,近半年未补充VitD及钙制剂。所用对象均排除1型糖尿病、糖尿病急、慢性并发症,且无感染、肿瘤、自身免疫性疾病及其他骨代谢疾病,肝肾功能、甲功均正常。这些患者均检测25(OH)D水平,根据2011年美国内分泌学会《维生素D缺乏的评价、预防及治疗》临床指南评估患者VitD的营养状况,25(OH)D水平≥30 ng/mL表示Vit D正常;20 ng/mL≤25(OH)D <30 ng/mL表示Vit D不足;25(OH)D <20 ng/mL表示Vit D缺乏;把Vit D不足及缺乏的114例患者(男/女=65/49,不足37例;缺乏77例)作为治疗组,年龄(49.55±7.23)岁;体质量指数(25.16±3.48)。同期未检测25(OH)D水平的新诊断T2DM患者80例(男/女= 46/34)为对照组(对照组入组条件符合上述标准),年龄(51.37±7.16)岁;体质量指数(24.98±3.17)。两组患者基线情况差异无统计学意义,具有可比性。
1.2 研究方法
所有对象进行FBG、2 hPG、HbA1c、FINS、血Ca2+、血P的检测。两组患者均给口服降糖药物治疗,治疗组添加阿法骨化醇软胶囊(进口药品注册证号H20130448)0.25 μg,口服,1次/d。FINS水平采用化学发光法检测;25(OH)D采用高效液相色谱-串联质谱法检测;HbA1c水平采用高效液相色谱法检测;FBG、2 hPG、血Ca2+及血P采用罗氏P800全自动生化分析仪检测;利用稳态模型计算:胰岛素抵抗指数(HOMA-IR)=空腹胰岛素×空腹血糖/22.5,HOMA-β细胞功能指数(%)=20 ×空腹胰岛素/(空腹血糖-3.5)。