脂联素基因多态性与2型糖尿病及颈动脉内膜中层厚度有关

采用PCR—RFLP技术研究脂联素基因多态性与2型糖尿病及颈动脉内膜中层厚度的关系。脂联素基因外显子2Gly15Gly位点T→G变异可能与北京地区人群2型糖尿病发生有关，且与颈动脉内膜中层厚度增加有关。     

亚甲基四氢叶酸还原酶基因多态性与糖尿病肾病相关性研究

目的：研究亚甲基四氢叶酸还原酶（MTHFR）基因多态性与2型糖尿病肾病的关系。方法：运用聚合酶链反应－限制性片段长度多态性技术（PCR－RFLP）检测85例2型糖尿病患者（其中39例伴糖尿病肾病）及57例正常对照组MTHFR C677T基因型,采用高效液相色谱法测定血浆同型半胱酸水平。结果：糖尿病肾病组MTHFR基因TT纯合基因型,CT杂合基因型及T等位基因频率（分别为38．21％,51．28％,53．85％）均明显高于糖尿病不伴肾病组（分别为19．57％,28．26％,33．70％）及正常对照组（分别为17．54％,28．07％,31．58）,基因型和等位基因频率分布差异均有统计学意义（P＜0．05）,而MTHFR基因该多态性在不伴肾病组与正常对照组之间差异无显著性（P＞0．05）,T等位基因与糖尿病肾病的发生密切相关（OR＝2．30,95％可信区间;1．24－4．26）。糖尿病肾病组,糖尿病不伴肾病组及正常对照组中,MTHFR基因有C677T突变者血浆同型半胱氨酸水平均显著高于无基因突变者。结论：MTHFR基因C677T位碱基突变致血浆同型半胱氨酸水平高是糖尿病肾病发病的重要遗传因素。     

Lack of association between ADH3 polymorphism, alcohol intake, risk factors and carotid intima-media thickness

OBJECTIVE: We assess the relationships between alcohol dehydrogenase 3 (ADH3) polymorphism, alcohol consumption and cardiovascular risk factor levels. METHODS: In a representative population sample from Southwestern France (614 men, 567 women, age 49.7+/-8.5 years), alcohol intake was assessed by questionnaire. RESULTS: Alcohol consumption was significantly related with higher levels of total and HDL cholesterol, triglycerides, apolipoprotein A-I in men and with higher levels of HDL cholesterol in women. Also, an inverse relationship between alcohol consumption and intima-media thickness was found in men. Conversely, in both genders, no differences were found between ADH3 genotypes regarding all cardiovascular risk factors studied and carotid intima-media thickness. Also, in both genders, no significant ADH3xalcohol interaction was found for all variables, and further adjustment on age, body mass index, educational level, smoking status or after excluding subjects on hypolipidemic or antihypertensive drug treatment did not change the results. CONCLUSION: We found no interaction between the ADH3 polymorphism and alcohol intake on cardiovascular risk factor levels and atherosclerotic markers in Southwestern France.     

2型糖尿病患者脑硫脂、胰岛素抵抗与颈动脉内膜-中层厚度的关系

目的探讨2型糖尿病（T2DM）患者脑硫脂、胰岛素抵抗（IR）与颈动脉内膜-中层厚度（CIMT）的关系。方法对104例T2DM患者进行血糖、血脂、血尿酸（UA）、真胰岛素（TI）及脑硫脂检测,并行B超检查测量其CI—MT。结果CIMT正常58例,CIMT增厚46例。与CIMT正常者比较,CIMT增厚者的脑硫脂明显降低,年龄、血清TI及胰岛素抵抗指数（HOMA-IR）的自然对数[In（TI）、In（HOMA—IR）]、C反应蛋白明显升高（P均〈0．05）;多元逐步回归分析显示,CIMT与脑硫脂呈负相关,与年龄、In（TI）、In（HOMA—IR）、UA呈正相关。结论脑硫脂与IR有密切相关性,脑硫脂降低、IR是T2DM患者C／MT增厚的危险因素。     

不同糖代谢阶段血浆基质金属蛋白酶-9与颈动脉内膜中层厚度的相关性

大血管病变是2型糖尿病(T2DM)最常见的并发症,也是T2DM的主要致死原因,其基本的病理变化是动脉粥样硬化(AS)。颈动脉内膜中层厚度(IMT)作为反映AS的客观指标已得到公认[1,2]。基质金属蛋白酶-9(MMP-9)是MMPs家     

The association between carotid intima-media thickness and sciatica

OBJECTIVE: Both clinical and epidemiologic studies have shown an association between atherosclerotic changes in the aorta or lumbar arteries and lumbar disc degeneration. However, the association between atherosclerosis and sciatica remains unknown. The aim of this study was to investigate the association between carotid intima-media thickness and sciatica. METHODS: The target population consisted of people aged 45 to 74 years, who had participated in a Finnish nationwide population study during the period 2000 to 2001 and lived within 200 km of the 6 study clinics. Of the 1867 eligible subjects, 1386 (74%) were included in the study. We used high-resolution B-mode ultrasound imaging to measure intima-media thickness, and local or radiating low back pain was determined by a standard interview and clinical signs of sciatica through a physician's clinical examination. RESULTS: Carotid intima-media thickness was associated with continuous radiating low back pain and with a positive unilateral clinical sign of sciatica among men only. After adjustment for potential confounders, each standard deviation (0.23 mm) increment in carotid intima-media thickness showed an odds ratio of 1.6 (95% confidence interval 1.1-2.3) for continuous radiating low back pain and 1.7 (95% confidence interval 1.3-2.1) for a positive unilateral clinical sign of sciatica. Carotid intima-media thickness was not associated with local low back pain. CONCLUSION: Sciatica may be a manifestation of atherosclerosis, or both conditions may share common risk factors.     

Plasma total homocysteine level and its association with carotid intima-media thickness in obesity

BACKGROUND: Elevated plasma concentrations of total homocysteine (tHcy) and obesity are risk factors for cardiovascular disease. The relationship between hyperhomocysteinemia and obesity has not been totally elucidated. OBJECTIVE: The first aim of the study was to investigate whether anthropometric measurements and insulin resistance contribute to the variation in homocysteine levels in obese adults. Our second aim was to determine if any relationship exists between the carotid intima-media thickness (IMT) and plasma tHcy levels in obese subjects without traditional cardiovascular risk factors. MATERIAL AND METHODS: Fifty-five obese (15 male, 40 female) and 30 (11 male, 19 female) age- and sex-matched apparently healthy volunteers were included. Exclusion criteria were smoking, hypertension, diabetes, vitamin ingestion, hyperlipidemia, renal failure, liver disease, pregnancy, menopause and secondary obesity such as Cushing's syndrome, hypothyroidism. tHcy, folate, vitamin B12 levels, fasting insulin, glucose, total cholesterol, triglycerides, HDL, LDL particles, uric acid, creatinine and creatinine clearance were measured. Non-invasive ultrasound measurements of carotid IMT were performed. RESULTS: tHcy levels and carotid IMT were comparable between obese and non-obese subjects. Waist/hip ratio (WHR) was related to tHcy and carotid IMT. Hyperhomocysteinemic subjects (tHcy >19.2 micromol/l) had greater WHR than normo-homocysteinemic subjects. Both tHcy levels and carotid IMT were higher in male subjects both in obese and non-obese subjects. No association was observed between insulin resistance and tHcy and carotid IMT. Renal function and abdominal obesity were significant predictors of plasma tHcy levels. CONCLUSIONS: We concluded that, in obese subjects who are free from atherosclerosis and impaired renal function, plasma tHcy levels do not differ from healthy subjects. Plasma tHcy concentrations are not related to carotid IMT in obese subjects during the non-atherogenic stage. Although no significant difference was observed between insulin-resistant and insulin-sensitive subjects compared to the plasma tHcy levels, the relationship between tHcy levels and some components of the insulin resistance syndrome may support the opinion that tHcy may be considered a component of the insulin resistance syndrome.     

老年2型糖尿病患者血尿酸水平与颈动脉内膜中层厚度的相关性研究

目的：探讨2型糖尿病（T2DM）患者血清尿酸（SUA）水平与颈动脉内膜中层厚度（IMT）的关系。方法：2008年9月~2010年11月我院老年病门诊272例T2DM患者,其中男性191例,女性81例,按SUA水平分为高血尿酸组（167例）及正常血尿酸组（105例）。分别测定两组颈动脉IMT。结果：高血尿酸组颈动脉IMT明显高于正常血尿酸组[（1.31±0.51）mm∶（1.01±0.59）mm];相关分析显示,两组患者SUA水平与颈动脉IMT、CRP均呈正相关（r=0.24,P〈0.01;r=0.32,P〈0.01）。结论：老年2型糖尿病患者随着血尿酸水平升高,颈动脉内膜中层厚度亦增加,控制血尿酸水平可能有助于防治糖尿病大血管并发症。     

Inflammation, homocysteine and carotid intima-media thickness.

INTRODUCTION: Cardiovascular disease is the main cause of morbidity and mortality in chronic renal patients. Carotid intima-media thickness (CIMT) is one of the most accurate markers of atherosclerosis risk. In this study, the authors set out to evaluate a population of chronic renal patients to determine which factors are associated with an increase in intima-media thickness. METHODS: We included 56 patients (F=22, M=34), with a mean age of 68.6 years, and an estimated glomerular filtration rate of 15.8 ml/min (calculated by the MDRD equation). Various laboratory and inflammatory parameters (hsCRP, IL-6 and TNF-alpha) were evaluated. All subjects underwent measurement of internal carotid artery intima-media thickness by high-resolution real-time B-mode ultrasonography using a 10 MHz linear transducer. RESULTS: Intima-media thickness was used as a dependent variable in a simple linear regression model, with the various laboratory parameters as independent variables. Only parameters showing a significant correlation with CIMT were evaluated in a multiple regression model: age (p=0.001), hemoglobin (p=00.3), logCRP (p=0.042), logIL-6 (p=0.004) and homocysteine (p=0.002). In the multiple regression model we found that age (p=0.001) and homocysteine (p=0.027) were independently correlated with CIMT. LogIL-6 did not reach statistical significance (p=0.057), probably due to the small population size. CONCLUSION: The authors conclude that age and homocysteine correlate with carotid intima-media thickness, and thus can be considered as markers/risk factors in chronic renal patients.     

2型糖尿病颈动脉内中膜厚度与糖尿病视网膜病变的关系

采用双功多普勒超声诊断仪检测2型糖尿病(T2DM)患者颈动脉内中膜厚度(IMT)的变化,探讨IMT的改变与微血管并发症的关系。研究认为,T2DM患者颈动脉平均IMT的改变与糖尿病视网膜病变的发生有密切关系,而与最大IMT的厚度则关系不大。     

新诊断2型糖尿病患者脉压与颈动脉内膜-中层厚度的关系

目的对新诊断2型糖尿病患者血压及脉压水平与颈动脉内膜-中层厚度(IMT)的关系进行分析,以期为2型糖尿病患者预防早期心脑血管疾病提供临床依据。方法对中国糖尿病并发症防治研究——CDCPSⅠ期及Ⅱ期研究中1567例新诊断2型糖尿病患者(年龄30～70岁,其中女性698例,40.9%)行B超检查测量颈动脉IMT,并通过对血压的测量,分析血压及不同脉压(PP)对颈动脉IMT的影响,同时分析内膜增厚组(IMT≥0.8 mm)与内膜正常组(IMT<0.8 mm)血压和PP水平有无差异结果(1)合并高血压组与不合并高血压组比较,颈动脉IMT显著增厚[高血压组(0.76±0.15)mm,非高血压组(0.74±0.14)mm,差异有统计学意义(P=0.0006)]。(2)直线相关分析发现,颈动脉IMT与年龄(r=0.19548)、BMI(r=0.07252)、LDL(r=0.06523)、SBP(r=0.11173)、DBP(r=0.05962)、PP(r=0.10592)显著正相关(均为P<0.05)。(3)以PP 50mm Hg为界限将患者分为两组,脉压≥50mm Hg组颈动脉IMT(0.77±0.14)mm较脉压<50mm Hg组(0.74±0.15)mm显著增厚(P=0.0006);即使在非高血压患者,脉压≥50mm Hg组的颈动脉IMT(0.75±0.14)mm较脉压<50 mm Hg组(0.73±0.14)mm也有增厚(P=0.046);在<60岁的患者脉压≥50 mm Hg组的颈动脉IMT(0.75±0.15)mm较脉压<50 mm Hg组(0.73±0.14)mm也有显著增厚(P=0.008)(4)颈动脉IMT≥0.8 mm组SBP、PP均较IMT<0.8 mm组显著升高(P值分别为0.001和0.002),而两组间DBPIMT增厚组(78 2±9.8)mm Hg,正常组(79.1±10.0)mm Hg]差异无统计学意义(P=0.075)。结论在新诊断的2型糖尿病患者,PP与颈动脉IMT的正相关性与SBP相近,而强于DBP。对于PP≥50mm Hg的患者要尽早行颈动脉超声检查测量颈动脉IMT以早期发现可能存在的亚临床动脉粥样硬化性疾病,尽早进行干预治疗。     

Lack of significant association between intima-media thickness in the carotid artery and serum TSH level. The Troms? Study.

BACKGROUND: Increased arterial wall intima-media thickness (IMT) is an early feature of atherosclerosis and has been reported to be altered in patients with thyroid dysfunction. The present study was performed to examine the relation between carotid artery intima-media thickness and possible variations in thyroid function in normal subjects using serum TSH as a surrogate index of thyroid function. DESIGN: A total of 2034 subjects (974 males) were studied, 1856 or whom were non-users of thyroxine. The subjects not taking thyroxine were classified into three groups, those with a low serum TSH (0.48 mIU/L (2.5 percentile, those with serum TSH from 0.48 to 4.16 mIU/L, and those with high serum TSH of >4.16 mIU/L (97.5 percentile). Carotid ultrasound was performed in each all 2034 subjects to determine IMT. RESULTS: Among those not taking thyroxine, subjects in the low serum TSH group had a higher mean IMT as compared to those in the normal and high serum TSH groups but the differences were not significant when adjusted for gender, age, smoking status, body mass index, systolic blood pressure and serum cholesterol (0.88 +/- 0.15 mm, 0.84 +/- 0.16 mm, and 0.84 +/- 0.24 mm respectively). Subjects taking thyroxine had significantly higher IMT than those not taking thyroxine (0.89 + 0.20 mm versus 0.84 + 0.17 mm, p<0.01). CONCLUSIONS: No significant relationship between carotid IMT and serum TSH levels was observed in normal, non thyroxine taking, subjects. Carotid IMT was increased in subjects taking thyroxine. Whether the increase in carotid IMT is due to thyroxine ingestion or underlying thyroid disease cannot be answered from the study.     

Lack of association between carotid intima-media thickness and PAF-acetylhydrolase mass and activity in patients with primary hyperlipidemia

Carotid intima media thickness (IMT), represents an important clinical indicator of early atherosclerosis. Human plasma platelet-activating factor acetylhydrolase (PAF-AH) is an enzyme primarily associated with low-density lipoprotein (LDL) while a small proportion of enzymatic activity is also associated with high-density lipoprotein (HDL). Plasma paraoxonase 1 (PON1) is an esterase exclusively associated with HDL. The authors investigated the possible relationship between carotid IMT and the plasma levels of PAF-AH mass and activity as well as the PON1 activity in hyperlipidemic patients. One hundred unrelated patients with primary hyperlipidemia and 67 age-and sex-matched normolipidemic apparently healthy volunteers participated in the study. The PAF-AH activity in total plasma and in HDL-rich plasma (HDL-PAF-AH activity), the plasma PAF-AH mass, and the serum PON1 activities toward paraoxon and phenyl acetate were determined. The plasma PAF-AH mass and activity were higher in hyperlipidemic patients compared to controls, whereas the HDL-PAF-AH activity, as well as the serum PON1 activities were not significantly different between the studied groups. When hyperlipidemic patients were divided into 2 subgroups according to their IMT values (IMT <0.7 mm and IMT > or =0.7 mm) patients with IMT > or =0.7 mm had significantly higher age, and serum triglyceride concentrations, whereas no difference was found in the plasma PAF-AH mass and activity as well as in the HDL-PAF-AH activity between the 2 studied subgroups. The same phenomenon was observed for serum PON1 activities. In a multivariate analysis, only the age was significantly correlated with IMT values (p<0.05). Neither the total plasma PAF-AH mass and activity nor the HDL-PAF-AH activity are associated with early carotid atherosclerosis.     

血清Irisin浓度与颈动脉内中膜厚度的相关性

目的 研究血清鸢尾素（Irisin）浓度与颈动脉内中膜厚度（IMT）的相关性。方法 连续入选于西京医院心内科住院患者193例。收集入选患者相关临床资料,采用ELISA方法检测空腹血清Irisin浓度,并根据患者双侧颈动脉超声检查结果将研究对象分为2组:IMT正常组和IMT增厚组（IMT正常组:IMT<0.8 mm;IMT增厚组:IMT≥0.8 mm）。运用多种统计学方法,分析血清Irisin浓度和IMT值的关系。结果IMT增厚组患者血清Irisin浓度较IMT正常组患者显著降低,IMT值厚度随着血清Irisin浓度的降低逐渐升高,Pearson偏相关分析结果 显示,IMT与血清Irisin浓度呈显著负相关（r=-0.505,P<0.01）,多元逐步回归分析结果显示,血清Irisin水平、LDL-C、TG、WHR、BNP和FBG是IMT值的独立相关因素。结论 血清Irisin浓度与颈动脉IMT呈负相关,血清Irisin水平是颈动脉IMT增加的独立相关因素。     

2型糖尿病颈动脉内膜中层病变及相关危险因素分析

目的分析2型糖尿病(T2DM)颈动脉内膜中层厚度(C-IMT)与危险因素相关性。方法报告了南京大学医学院附属鼓楼医院2002-01-2003-03应用高分辨B超测定67例不同T2DM病程者C-IMT;取血测空腹时肌酐、超敏C反应蛋白(CRP),根据24h尿计算肌酐清除率。结果病程≥10年组较初发组C-IMT明显增厚,C-IMT随肌酐清除率降低而增加。多元逐步回归分析表明CRP进入回归方程(p=0.809,P<0.001)。结论T2DM者C-IMT随病程肌酐清除率降低而增厚;CRP在T2DM大血管病变中具致病作用。     

Association between serum gamma-glutamyltransferase activity and carotid intima-media thickness

Serum gamma-glutamyltransferase (GGT) activity is a marker of oxidative stress and activity is associated with cardiovascular disease. Carotid intima-media thickness (IMT) is a noninvasive predictor of atherosclerosis. We investigated the association between serum GGT activity and carotid IMT. Fifty-five persons who had normal liver function tests were consecutively enrolled. Carotid IMT was evaluated in the right and left common carotid arteries. The averaged values of carotid IMT and serum GGT activity were compared. Serum GGT activity correlated with carotid IMT (r = .396, P = .003). Serum GGT activities were increased in patients with carotid intimal hyperplasia compared with those without intimal hyperplasia (20.3 ± 11.2 vs 34.3 ± 16.1 U/L; P = .001). Serum GGT activity is associated with carotid IMT. This finding supports the concept that elevated serum GGT activity is a marker of atherosclerosis.     

福建地区2型糖尿病患者脂联素基因启动子区多态性与颈动脉内膜中层厚度有关

目的 探讨脂联素基因启动子区-11377位点单核苷酸多态性与2型糖尿病患者颈动脉内膜中层厚度(CIMT)之间的关系.方法 采用PCR-限制性片段长度多态性(RFLP)技术在504例2型糖尿病患者(CIMT正常组254例,CIMT增厚组250例)中检测脂联素基因-11377位点多态性,同时检测血脂、空腹血糖、空腹胰岛素及血清脂联素水平.结果 脂联素基因-11377C→G基因型和等位基因频率在CIMT正常组与CIMT增厚组的分布有显著性差别(P相似文献   

Cerebrovascular disease in diabetes mellitus: The role of carotid intima-media thickness

Background and purposeCerebrovascular disease in diabetes appears to be less considered than coronary and peripheral disease, the reason being the intrinsic difficulty in finding available diagnostic tools for its early identification. Among these, carotid artery intima-media thickness (cIMT) represents the simplest measurable parameter for pre-atherosclerotic lesions in extra-cranic arteries.MethodsThe role of cIMT as a surrogate marker of cerebral atherosclerosis and predictor of stroke, its relationship to microangiopathy and chronic inflammation, along with its role as an outcome parameter in anti-hyperglycemic therapeutical intervention trials in type 2 and 1 diabetes mellitus are discussed in this paper.Results and conclusionsCarotid IMT is increased in diabetes. It is an independent predictor of stroke, in particular of the ischemic subtype, and of stroke recurrence in diabetic, as well as in non-diabetic populations. A possible role of cIMT as a predictor of microangiopathy has also been suggested, but it needs further investigation. A weak association with chronic inflammation has been demonstrated in diabetic patients. Carotid IMT has been successfully employed as an outcome parameter for several anti-hyperglycemic therapeutic trials.However data on cIMT as a predictor of cerebrovascular disease are scarce in diabetic patients, particularly in type 1 diabetes, and more studies are needed to define the risk of cerebrovascular disease in diabetic patients.