2型糖尿病患者血清脂蛋白(a)水平及其与冠心病的关系

目的　探讨 2型糖尿病患者血清脂蛋白 (a) [Lp(a) ]水平及其与冠心病的关系。方法　选择 90例 2型糖尿病及 6 8例健康对照者测定其血清Lp(a)、总胆固醇 (TC)、甘油三酯 (TG)、高密度脂蛋白胆固醇 (HDL C)水平 ;计算低密度脂蛋白胆固醇 (LDL C)水平及TC、TG、LDL C与HDL C比值。结果　 (1)糖尿病组血清Lp(a)水平与对照组比较差异无显著性意义 (P >0 .0 5 )。 (2 )将 2型糖尿病患者分为糖尿病伴冠心病和单纯糖尿病亚组后发现 :①糖尿病伴冠心病亚组血清Lp(a)水平明显高于单纯糖尿病亚组 [(2 3.78± 2 3.73)mg/dlvs (13.31± 10 .6 6 )mg/dl;P <0 .0 1]及对照组 [(2 3.78± 2 3.73)mg/dlvs (16 .2 8± 17.95 )mg/dl;P <0 .0 5 ];②糖尿病伴冠心病亚组血清Lp(a)水平与LDL C呈正相关关系 (r =0 .32 16 ,P <0 .0 5 )。结论　 2型糖尿病患者血清Lp(a)水平增高可能与冠心病发病有密切关系。     

脂蛋白α水平与冠心病发生及严重程度的相关性探究

目的 探究未经治疗的冠心病(CAD)患者中,脂蛋白α[Lp(α)]在预测CAD发病和严重程度方面的作用.方法 连续入选2012年10月至2017年4月于阜外医院血脂异常与心血管疾病诊治中心的1980例接受冠状动脉造影的患者,其中1162例确诊患有CAD,用Gensini评分(GS)来评估CAD严重程度,免疫比浊法测定Lp(α).结果 与无CAD患者相比,CAD患者LDL-C水平更高(P<0.05).多变量Logistic回归分析表明,Lp(α)>205 mg/L(第三分位)时患CAD的风险是Lp(α)处于第一分位者的1.437倍(95%CI 1.108~1.865,P=0.006),高GS的风险是Lp(α)处于第一分位者的1.480倍(95%CI 1.090~2.009,P=0.012).而且,高水平的Lp(α)和LDL-C并存时预示着CAD发病风险(OR=1.845,95%CI 1.339~2.541,P<0.001)和冠状动脉严重程度(OR=1.736,95%CI 1.188~2.538,P=0.004)最高.结论 脂蛋白α可作为预测冠状动脉疾病存在和程度的标志物,尤其是与LDL-C联合使用时.     

Apolipoprotein (a) levels in type 1 and type 2 diabetes mellitus

Type 1 and type 2 diabetes mellitus are both characterized by increased cardiovascular mortality and morbidity. Since several reports have indicated that apolipoprotein (a) [apo (a)] levels are positively associated with an increased risk of macrovascular disease, we investigated whether apo (a) levels are elevated in both types of diabetes mellitus and may thus represent an independent risk factor for atherosclerotic disease. Apo(a) concentrations in type 1 diabetic patients were not significantly different from matched controls (276±78 vs 149±46 units/l). Type 2 diabetic patients had considerably higher levels of apo (a) than matched controls (471±89 vs 221±61 units/l,P=0.06), though the difference was not statistically significant. However, concentrations of apo (a) were above 300 units/l in 36% of type 1 and 67% of type 2 diabetic patients, but in only 14% and 25% respectively of matched control subjects. Plasma triglycerides were positively and independently correlated with apo (a) levels in both diabetic and non-diabetic subjects. On the other hand, no significant correlation was found between apo (a) levels and glycosylated haemoglobin, total cholesterol or high density lipoprotein cholesterol in any of the groups studied. In conclusion, apo (a) levels are not significantly elevated either in type 1 or type 2 diabetic patients without proteinuria and in moderate metabolic control; however, levels above 300 units/l were 2.6 times more frequent in both types of diabetes mellitus than in carefully age-, sex-, and weight-matched control subjects.     

Elevated serum lipoprotein(a) is significantly associated with angiographic progression of coronary artery disease

BackgroundLipoprotein(a)[Lp(a)] has been considered as an independent risk factor for coronary artery disease (CAD). The present study aimed to evaluate the association between baseline serum Lp(a) and CAD progression determined by angiographic score.MethodsA total of 814 patients who had undergone two or more coronary computed tomography angiography at least 6 months apart were consecutively enrolled and the coronary severity was determined by the Gensini score system. Patients were stratified into two groups according to Lp(a)>300 mg/L and Lp(a) ≤ 300 mg/L or classified as “progressors” and “non‐progressors” based on the Gensini score rate of change per year. The association of continuous Lp(a) and Lp(a)>300 mg/L with CAD progression were respectively assessed by logistic regression analysis. Moreover, further evaluation of those association was performed in subgroups of the study population.ResultsPatients in the “progressors” group had significant higher Lp(a) levels. Furthermore, the multivariate logistic regression analysis showed that elevated Lp(a) (odds ratio [OR]: 1.451, 95% confidence interval [CI]: 1.177–1.789, p<.001) and Lp(a)>300 mg/L (OR:1.642, 95% CI:1.018–2.649, p = .042) were positively associated with CAD progression after adjusting for confounding factors. In addition, those relation seemed to be more prominent in subjects with lower body mass index (OR: 1.880, 95% CI: 1.224–2.888, p for interaction = .060).ConclusionsElevated baseline serum Lp(a) is positively and independently associated with angiographic progression of CAD, particularly in participants with relatively low body mass index. Therefore, Lp(a) could be a potent risk factor for CAD progression, assisting in early risk stratification in cardiovascular patients.     

Relationship of lipid and lipoprotein ratios with coronary severity in patients with new on-set coronary artery disease complicated with type 2 diabetics

Background Diabetes mellitus (DM) is associated with coronary artery disease (CAD) progression. Although previous studies have demonstrated the association of lipid and lipoprotein ratios with CAD, no data are currently available concerning the relationship between lipid and lipoprotein ratios and the severity of new on-set CAD in diabetics. Therefore, the aim of the present study was to investigate the usefulness of lipid and lipoprotein ratios in predicting the severity of CAD in patients with type 2 DM (T2DM). Methods A total of 380 consecutive T2DM patients with new on-set CAD were enrolled in the present study. Then, they were classified into the three groups according to Gensini score (GS) tertiles. The relationship between lipid and lipoprotein ratios currently used and the GS was investigated. Results Positive correlations of natural log-transformed GS (lnGS) with apolipoprotein B to apoA-I ratio (apoB/apoA-I), non-high-density lipoprotein cholesterol to apoA-I ratio (non-HDL-C/apoA-I), and low-density lipoprotein cholesterol to apoA-I ratio (LDL-C/apoA-I) were found (r = 0.18, 0.13, 0.12, respectively, all P < 0.05). Multivariate logistic analysis indicated apoB/apoA-I as the strongest predictor for high GS (OR = 5.67, 95% CI: 1.45–23.92, P = 0.003). Area under receivers operating characteristic curve of apoB/apoA-I was 0.63 (95% CI: 0.60–0.66, P = 0.001) for predicting high GS. The optimal cutoff value of apoB/apoA-I to predict high GS was 0.72 with the sensitivity of 61.2% and the specificity of 62.1%. Conclusions Lipid and lipoprotein ratios might be useful for predicting the severity of new on-set CAD in T2DM patients, and the apoB/apoA-I appeared as the most significant predictor in this population.     

Silent coronary artery disease in patients with type 2 diabetes mellitus

Abstract. The purpose of this study was to estimate the prevalence and risk factors of silent CAD in asymptomatic type 2 diabetic patients aged over 40 years. A total of 172 asymptomatic type 2 diabetic patients, mean age 54.42 years, with normal resting electrocardiogram were included in the study. Technetium-99m (Tc-99m) tetrofosmin cardiac single photon emission computed tomography myocardial scintigraphy with exercise testing or dipyridamole injection was performed on all patients. If this test was positive, coronary angiography was carried out and was considered to be positive with a stenosis of 70%. Abnormal perfusion pattern was found in 14 patients (8.14%). Significant coronary artery stenosis was found in 13 subjects (7.56%), confirming a high positive predictive value (92.86%) of this diagnostic procedure. A significant correlation was observed between silent CAD and male sex, retinopathy, hypertension, post-prandial blood glucose level, and low HDL-cholesterol level. Sex (OR=4.026; 95% CI, 1.187–13.659), hypertension (OR=5.564; 95% CI, 1.446–21.400) and retinopathy (OR=3.766; 95% CI, 1.096–12.948) were risk factors for CAD. Overall, 14.06% of asymptomatic male patients with type 2 diabetes mellitus presented silent CAD with significant angiographically documented coronary stenosis. This finding, along with the high positive predictive value of a noninvasive technique, indicates that routine screening for silent CAD would be useful in this patient subgroup especially when they have retinopathy or hypertension.     

急性冠脉综合征并发2型糖尿病患者血清脂蛋白磷脂酶A2浓度及其与冠状动脉病变程度的相关性

目的探讨急性冠状动脉综合征(acute coronary syndrome,ACS)并发2型糖尿病(type 2 diabetes mellitus,T2DM)患者血清脂蛋白磷脂酶A2(lipoprotein phospholipase A2,Lp-PLA2)浓度及其与冠状动脉病变程度的相关性。方法选择佛山市第一人民医院禅城医院2017年8月至2018年10月106例ACS患者为研究对象,其中53例无并发糖尿病为对照组,53例并发T2DM为观察组,另选择同期健康体检人群60名为正常组。检测3组受试者血清Lp-PLA2浓度及肱动脉血流介导的血管内皮舒张功能(flow mediated dilation,FMD);计算3组受试者冠状动脉病变Gensini积分;超声检测3组受试者冠状动脉病变程度。结果观察组血清Lp-PLA2浓度、冠状动脉病变Gensini积分明显高于对照组和正常组,差异有统计学意义(P<0.05)。观察组FMD明显低于对照组和正常组,差异有统计学意义(P<0.05)。观察组超声检测参数明显比对照组和正常组差,差异有统计学意义(P<0.05)。与观察组单支或双支冠状动脉病变血管患者比较,冠状动脉病变3支及以上患者血清Lp-PLA2浓度明显上升,差异有统计学意义[(510.64±46.93)ng/mL vs.(443.36±44.58)ng/mL,P<0.05;vs.(510.64±46.93)ng/mL vs.(397.25±38.42)ng/mL,P<0.05]。观察组血清Lp-PLA2浓度与FMD呈负相关,与冠状动脉病变Gensini积分呈正相关。结论ACS并发T2DM患者血清Lp-PLA2浓度增高并与冠状动脉病变程度有关。     

合并2型糖尿病的急性冠脉综合征患者GRACE评分与冠脉病变严重程度的相关性研究

目的 探讨GRACE评分与合并2型糖尿病的急性冠脉综合征(acute coronary syndromes,ACS)患者冠状动脉病变相关性及相关程度。方法 选取2014年1月至2014年12月在沧州市中心医院住院治疗的合并有2型糖尿病的ACS患者262例,并对所有患者行急性全球急性冠脉综合征注册评分(GRACE评分),并根据评分结果分为低危组、中危组和高危组,比较3组患者临床参数差异,所有患者均行冠脉造影术,并根据造影结果采用Gensini积分对冠脉病变程度进行量化评价,同时记录冠脉病变支数,用Spearman相关分析GRACE评分与冠脉病变的关系,并用ROC曲线分析GRACE评分对三支或左主干病变的预测价值。结果 3组中年龄、心率、入院随机血糖、空腹血糖、低密度脂蛋白(LDL)、心肌标志物、糖尿病病程、冠脉病变支数、弥漫性病变和Gensini积分的差异均有统计学意义,Spearman相关分析显示GRACE评分和Gensini积分呈正相关(r =0.651,R<0.001),GRACE评分危险分层和冠脉病变支数呈正相关(r =0.695 ,R<0.001),GRACE评分(ROC曲线下面积0.870,95％CI=0.826~0.914;R<0.001)比糖尿病病程(ROC曲线下面积0.627,95％CI=0.558~.696;R<0.001)对3支或左主干病变更有预测价值。结论 GRACE评分对急性冠脉综合征合并2型糖尿病患者的冠脉病变支数和病变程度有较好的预测价值。     

2型糖尿病患者血清脂蛋白(a)水平变化及其意义

目的　探讨２ 型糖尿病血清Ｌｐ（ａ） 水平与尿白蛋白排泄率的关系。方法　应用单克隆抗体酶联免疫吸附法测定了３１ 例非糖尿病患者和８３ 例２ 型糖尿病患者的血清Ｌｐ（ａ） 水平,并分析它与尿白蛋白排泄率（ＵＡＥＲ） 的相关性。８３ 例２ 型糖尿病患者,根据ＵＡＥＲ 将其分为３ 组：①非糖尿病肾病（ＤＮ）者３２ 例（ＵＡＥＲ＜ ２０ μｇ／ｍｉｎ） ;②微量白蛋白尿者３９ 例（ＵＡＥＲ 介于２０～２００ μｇ／ｍｉｎ之间） ;③大量白蛋白尿者１２ 例（ＵＡＥＲ＞ ２００ μｇ／ｍｉｎ） 。结果　（１） 非糖尿病患者和２ 型糖尿病无ＤＮ 者间血清Ｌｐ（ａ）水平无显著性差异〔（８６ ．４４ ±２ ．１０）ｍｇ／Ｌｖｓ（９３ ．６０ ±１ ．８６）ｍｇ／Ｌ,Ｐ＞ ０ ．０５〕;而在２ 型糖尿病微量白蛋白尿者Ｌｐ（ａ）水平显著升高〔（１４１．１９±２ ．５９）ｍｇ／Ｌ,与非糖尿病患者和２ 型糖尿病无ＤＮ者相比,Ｐ均＜０ ．０５〕;２ 型糖尿病并大量白蛋白尿者Ｌｐ（ａ） 水平有进一步升高〔（２４７ ．５７±１ ．９０）ｍｇ／Ｌ,与非糖尿病患者、２ 型糖尿病无ＤＮ者以及２ 型糖尿病并微量白蛋白尿者相比有显著升高,Ｐ均＜０ ．０５〕。（２）２ 型糖尿病患者中, 血清Ｌｐ（     

Hypercoagulability and high lipoprotein(a) levels in patients with type II diabetes mellitus

Diabetes mellitus is associated with disturbances in hemostasis that could contribute to the development of diabetic vascular disease. We investigated the changes in parameters of blood coagulation and the fibrinolytic system and in plasma levels of lipoprotein(a) (Lp(a)) in 124 patients with type II diabetes mellitus and 44 healthy control subjects matched for age and body mass index (BMI) to determine whether hemostatic disturbances may lead to increased cardiovascular mortality. Median levels of fibrinogen (P < 0.0001), thrombin-antithrombin III complex (TAT) (P < 0.005), and plasminogen activator inhibitor-1 (PAI-1) activity (P < 0.05) in plasma were significantly elevated in diabetic patients compared with controls. The median concentration of Lp(a) was significantly higher in diabetic patients than in normal controls (18.2 vs. 12.6 mg/dl, P < 0.0005). Lp(a) levels tended to be elevated in patients with a prolonged history of diabetes. There was no evidence that Lp(a) levels were affected by metabolic control or by type of treatment. Twenty-two diabetics with coronary heart disease (CHD) had significantly higher levels of fibrinogen (P < 0.05), TAT (P < 0.05), and Lp(a) (24.7 vs. 13.7 mg/dl, P < 0.01) than the 51 patients without diabetic angiopathy. Our data indicate that impaired hemostatic balance in diabetes may cause hypercoagulability and may thus contribute to the increased cardiovascular mortality in diabetes.     

住院2型糖尿病患者血清脂蛋白(a)水平及与糖尿病肾病的关系

目的 研究2型糖尿病患者血清脂蛋白(a)水平的变化,探讨其与糖尿病肾病的关系.方法 2007年1月至2008年11月我院内分泌代谢科收治的2型糖尿病患者1238例,年龄15～89岁,记录血压、体质量及病程,入院第2天测定卒腹及餐后2 h血糖、血脂谱、肾功能及尿白蛋白排泄率,应用肾脏病膳食改良试验公式计算肾小球滤过率.分别根据患者年龄、尿白蛋白排泄率及脂蛋白(a)水平进行分层.采用t检验、方差分析、多元逐步回归分析等进行统计学分析.结果 不同年龄组患者血清脂蛋白(a)水平差异无统计学意义(F=1.144,P>0.05).大量蛋白尿组血清脂蛋白(a)水平显著高于正常蛋白尿组和微量蛋白尿组(F=4.113,P<0.05).研究队列按照血清脂蛋白(a)的四分位点分为四组,随着血清脂蛋白(a)水平的升高,尿白蛋白排泄率逐渐升高(F=7.877,P<0.01),而肾小球滤过率逐渐降低(F=4.479,P<0.01).血清脂蛋白(a)与血清总胆固醇、低密度脂蛋白胆固醇、尿白蛋白排泄率呈正相关(r值分别为0.152、0.169、0.18,均P<0.01),与肾小球滤过率呈负相关(r=-0.061,P<0.01).多元逐步同归分析结果显示:影响尿白蛋白排泄率的主要因素包括收缩压、血清脂蛋白(a)水平、低密度脂蛋白胆固醇、肾小球滤过率、年龄.结论 2型糖尿病患者血清脂蛋白(a)水平不受年龄、病程及血糖控制情况的影响,是尿白蛋白排泄率的独立影响因素.     

A prospective study of lipoprotein(a) and risk of coronary heart disease among women with type 2 diabetes

Aims We examined the association between lipoprotein (Lp)(a) and CHD among women with type 2 diabetes.Methods Of 32,826 women from the Nurses Health Study who provided blood at baseline, we followed 921 who had a confirmed diagnosis of type 2 diabetes.Results During 10 years of follow-up (6,835 person-years), we documented 122 incident cases of CHD. After adjustment for age, smoking, BMI, glycosylated HbA₁c, triglycerides (TGs), high-density lipoprotein cholesterol, low-density lipoprotein cholesterol and other cardiovascular risk factors, the relative risk (RR) comparing extreme quintiles of Lp(a) was 1.95 (95% CI 1.07–3.56). The association was not appreciably altered after further adjustment for apolipoprotein B₁₀₀ or several inflammatory biomarkers. Increasing levels of Lp(a) were associated with lower levels of TGs. The probability of developing CHD over 10 years was higher among diabetic women with substantially higher levels of both Lp(a) (>1.07 mol/l) and TGs (>2.26 mmol/l) than among diabetic women with lower levels (22 vs 10%, p log-rank test=0.049). Diabetic women with a higher level of only Lp(a) or TGs had a similar (14%) risk. In a multivariate model, diabetic women with higher levels of Lp(a) and TGs had an RR of 2.46 (95% CI 1.21–5.01) for developing CHD, as compared with those with lower levels of both biomarkers (p for interaction=0.413). The RRs for women with a higher level of either Lp(a) (RR=1.22, 95% CI 0.77–1.92) or TGs (RR=1.39, 95% CI 0.78–2.42) were comparable.Conclusions/interpretation Increased levels of Lp(a) were independently associated with risk of CHD among diabetic women.     

Correlation between serum lipoprotein (a) and angiographic coronary artery disease in non-insulin-dependent diabetes mellitus

Abstract. Comlekqi A, Biberoglu S, Kozan 0, Bahqeci 0, Ergene 0, Nazli C, Kinay 0, Guner G (Dokuz Eylul University, Medical School, Inciralti, Izmir, Turkey). Correlation between serum lipoprotein(a) and angio-graphic coronary artery disease in non-insulin-dependent diabetes mellitus. J Intern Med 1997; 242:449-54.
Objectives: To examine the impact of diabetic state on the concentrations of lipoprotein(a) [Lp(a)] in patients with non-insulin-dependent diabetes mellitus (NIDDM) and the correlation between angiographic coronary artery disease (CAD) and serum Lp(a) concentrations in NIDDM.
Design: In this cross-sectional study of 26 patients with NIDDM and 19 nondiabetic sex- and agematched patients who underwent coronary angiography, CAD was assessed visually using coronary artery score (CAS), and plasma Lp(a) was measured by an enzyme-linked immunosorbent assay.
Setting: The study was performed in an internal medicine clinic at a university hospital.
Subjects: Twenty-six age- and sex-matched patients with NIDDM and 19 control patients without diabetes.
Results: There was no significant difference between the Lp(a) concentrations of patientswith NIDDM and nondiabetic subjects (P > 0.05). When patients with NIDDM were stratified by absence or presence of CAD, patients with CAD had higher levels of Lp(a) (P < 0.05). However, there was no significant correlation between the concentrations of Lp(a) and CAS (P > 0.05).
Conclusions: Diabetic state does not have any impact on Lp(a) concentrations. Lp(a) excess seems to be atherogenic in patients with NIDDM as shown in nondiabetic patients in previous studies. Although diabetic patients with CAD have higher Lp(a) concentrations than the diabetic patients without CAD, Lp(a) levels were not correlated with CAS.     

Clinical implication of alterations in serum Klotho levels in patients with type 2 diabetes mellitus and its associated complications

Aim

To investigate the clinical significance of serum α-Klotho and β-Klotho levels in patients with type 2 diabetes mellitus (T2DM) and its associated complications.

Fluctuations in HbA1c are associated with a higher incidence of cardiovascular disease in Japanese patients with type 2 diabetes

Aims/Introduction: To reveal whether visit‐to‐visit variability in HbA1c is associated with higher risk of cardiovascular disease (CVD) in patients with type 2 diabetes. Materials and Methods: The study was conducted on 689 Japanese patients with type 2 diabetes [295 women, 394 men; mean (±standard deviations (SD)) age 65 ± 11 years]. Variability in HbA1c was evaluated as the intrapersonal SD of serial measurements of HbA1c during the follow‐up period for at least 12 months. Patients were divided into quartiles according to the SD of HbA1c, and the primary endpoint was defined as incident CVD. Cox’s proportional hazards model was used to calculate hazard ratios (HR) and 95% confidence intervals (CI). Results: During a median follow‐up period of 3.3 years (range 1.0–6.3 years), 26 ± 14 measurements of HbA1c were obtained per patient and 61 episodes of incident CVD were recorded. The 5‐year cumulative incidence of CVD in patients across the first, second, third, and fourth quartiles of SD in HbA1c was 4.9, 8.7, 17.1, and 26.2%, respectively (P < 0.001, log‐rank test). Multivariate Cox regression analysis revealed that the incidence of CVD was significantly higher in patients in the fourth quartile of SD in HbA1c compared with those in the first quartile (HR 3.38; 95% CI 1.07–10.63; P = 0.039), independent of mean HbA1c and other traditional cardiovascular risk factors. Conclusions: Variability of HbA1c may be a potent predictor of incident CVD in Japanese patients with type 2 diabetes. (J Diabetes Invest, doi: 10.1111/j.2040‐1124.2011.00155.x, 2011)     

Serum lipoprotein(a) level in relation to severity of coronary artery disease and coronary artery patency in acute myocardial infarction

Lipoprotein(a) (Lp(a)) is a low-density lipoprotein (LDL)-like particle that may accelerate atherogenesis and promote thrombosis. In the present study, relationships between serum Lp(a) levels and the severity of coronary artery disease and infarct artery patency were studied in 14 patients with acute myocardial infarction. Lp(a) was measured by enzyme-linked immunosorbent assay and the timing of reperfusion was evaluated using the creatine kinase myosin-brain fraction and myoglobin release curves. Thrombolysis in Myocardial Infarction (TIMI) flow grade and severity of coronary artery disease were assessed using a scoring system based on coronary angiography performed during hospitalization and 6 months thereafter. The median Lp(a) level on admission was 127 (range 11–2 513) mg/l. The overall coronary score was higher in patients with Lp(a) levels greater than 127 mg/l than in those with Lp(a) less than 127 mg/l (P < 0.01). Lp(a) level correlated with the coronary score measured during hospitalization (r = 0.80, P < 0.01) and 6 months later (r = 0.79, P < 0.01). The timing of reperfusion and infarct artery patency were not dependent on the serum Lp(a) level. The results show that the serum Lp(a) level is associated with the angiographic severity of coronary artery disease postmyocardial infarction but does not determine the patency of the infarct-related artery. Received: May 14, 2001 / Accepted: September 22, 2001     

颈动脉超声在诊断冠心病合并2型糖尿病中的应用价值

目的探讨颈动脉超声在冠心病合并2型糖尿病中的应用价值。方法将研究对象分为合并2型糖尿病和不合并2型糖尿病的冠心病组，超声观察颈动脉血流参数、内中膜厚度（IMT）及斑块指数（PI），并与冠状动脉造影结果对照。结果与单纯冠心病患者相比，合并2型糖尿病的冠心病患者颈动脉内径和血管阻力指数均增加（P〈0.05），IMT及PI随冠状动脉造影病变程度的增加而显著增加（P〈0．05）。结论颈动脉超声可以间接判断冠心病合并2型糖尿病患者冠状动脉血管病变的严重程度，可作为诊断合并2型糖尿病的冠心病的一项辅助检查方法。     

胰岛素在2型糖尿病合并冠心病中作用的研究进展

与2型糖尿病相关的冠心病的发病率及死亡率呈上升趋势,相关研究表明胰岛素自身可能存在双向性作用,而在2型糖尿病患者中胰岛素对冠状动脉粥样硬化病变的作用仍然存在很大的争议。近年来,多项大型的观察性研究以及少量的随机对照性研究结果也不尽一致。目前,胰岛素在2型糖尿病合并冠心病中的作用机制较为流行“双信号通路”假说。进一步研究和阐明胰岛素在2型糖尿病合并冠心病中的作用显得尤为重要。     

The vitamin D receptor gene variant is associated with the prevalence of type 2 diabetes mellitus and coronary artery disease.

AIMS: Vitamin D can influence lipolysis and insulin secretion. A common genetic polymorphism of the vitamin D receptor, which has been found to be associated with bone mineral density, has also been reported to be associated with insulin-dependent diabetes mellitus. To test the influence of the vitamin D receptor polymorphism on the prevalence of Type 2 diabetes mellitus and coronary artery disease we studied a population of high-risk patients, who were referred to our clinic for diagnostic coronary angiography. METHODS: A total of 293 patients considered at high risk for coronary artery disease because of angina pectoris and known hypercholesterolaemia underwent diagnostic coronary angiography. The BsmI vitamin D receptor polymorphism was analysed by polymerase chain reaction. RESULTS: Prevalence of Type 2 diabetes mellitus and coronary artery disease was gradually dependent on the number of B alleles (BB 28%, Bb 13%, bb 8% for Type 2 diabetes mellitus, P = 0.002; BB 88% Bb 72%, bb 66% coronary artery disease, P = 0.01). Patients with the BB genotype had an odds ratio of 3.64 (95% confidence interval 1.53-8.55, P = 0.002) to have Type 2 diabetes mellitus compared with patients with the bb genotype. CONCLUSIONS: The genotype of the vitamin D receptor polymorphism determines the prevalence of Type 2 diabetes mellitus and coronary artery disease in a high-risk cohort population.     

谷胱甘肽系统对2型糖尿病患者冠状动脉病变程度的影响

目的探讨谷胱甘肽系统对2型糖尿病(T2DM)患者冠状动脉病变程度的影响。方法选取行冠状动脉造影术的患者236例,分为正常糖耐量(NGT)组126例,T2DM组110例,检测患者的血液生化指标以及还原型谷胱甘肽(GSH)、GSH过氧化物酶(GSH-Px)和谷胱甘肽还原酶(GR)的活性。根据冠状动脉造影结果,采用Gensini评分系统对每支血管病变程度进行定量评分。结果 T2DM组血浆GSH[(3.87±1.55)μg/L vs(4.45±1.94)μg/L]、GSH-Px[(0.29±0.05)ng/L vs(0.35±0.08)ng/L]和GR[(0.19±0.07)ng/L vs(0.26±0.08)ng/L]活性明显低于NGT组,差异有统计学意义(P<0.05)。校正年龄、体重指数、血压、血脂、空腹血糖、空腹胰岛素、餐后2h血糖、餐后2h胰岛素、糖化血红蛋白因素后,T2DM组GSH、GSH-Px、GR活性与Gensini积分呈负相关(P<0.05,P<0.01)。T2DM组GSH、GSH-Px和GR活性对Gensini积分的影响作用最大。结论 T2DM患者血浆GSH、GR和GSH-Px活性的降低与冠状动脉病变程度具有一定的负相关性,且为该人群冠状动脉病变的独立影响因素。