High prevalence of Chlamydia pneumoniae antibodies and increased high-sensitive C-reactive protein in patients with vascular dementia

OBJECTIVES: To determine the relationships between Chlamydia pneumoniae infection, carotid atherosclerosis, and dyslipidemia in patients with vascular dementia (VaD) and Alzheimer's disease (AD). DESIGN: Case control study. SETTING: Showa University Karasuyama Hospital, Tokyo, Japan. PARTICIPANTS: One hundred twenty-four elderly subjects: 31 with VaD, 61 with AD, and 32 age-matched controls without dementia. MEASUREMENTS: Presence of antibodies to C. pneumoniae (immunoglobulin G (IgG) and IgA), the serum concentrations of high-sensitive C-reactive protein (hs-CRP) and atherogenic lipoproteins, and the carotid artery intima-media thickness (IMT) and plaques were determined. RESULTS: Age; body mass index; systolic and diastolic blood pressures; and fasting plasma glucose, hemoglobin A(1c), high-density lipoprotein cholesterol, and apolipoprotein A-I, B, and E concentrations did not differ significantly between the three groups, but the mean IMT and frequency of atherosclerotic plaques in the carotid arteries, as well as the serum concentrations of low-density lipoprotein cholesterol (LDL-C), lipoprotein(a), and lipid peroxides were significantly greater in VaD patients than in AD patients or nondemented controls. Hs-CRP concentrations and prevalence of C. pneumoniae IgG and IgA antibodies also were significantly higher in VaD patients than in AD patients and nondemented controls. Multiple logistic regression analysis revealed that carotid IMT and plaques, LDL-C, lipid peroxides, hs-CRP, and IgG and IgA C. pneumoniae seropositivity were independent risk factors for VaD. CONCLUSION: These results suggest that carotid atherosclerosis, atherogenic lipoproteins, and C. pneumoniae infection (as documented by the IgG and IgA seropositivity together with increased hs-CRP) may be VaD risk factors.     

Small dense low-density lipoprotein and carotid atherosclerosis in relation to vascular dementia

Vascular dementia (VaD) and Alzheimer's disease (AD) are the most common causes of dementia in the elderly. The aim of this study was to investigate carotid atherosclerosis, serum lipid profiles, and atherogenic hormone levels in nondiabetic Japanese men with VaD or AD. Carotid artery intima-media thickness (IMT) and plaque, serum lipid and lipoprotein profiles, including low-density lipoprotein (LDL) particle size, as well as insulin-like growth factor-I (IGF-I, somatomedin C) and testosterone levels, were determined in 34 patients with AD, 37 patients with VaD, and 63 healthy male controls. Age, body mass index, systolic and diastolic blood pressure, and fasting plasma glucose, hemoglobin A(1c) (HbA(1c)), triglyceride, high-density lipoprotein (HDL)-cholesterol, and apolipoproteins (apo) A-I, B, and E levels did not differ significantly among the 3 groups. However, the mean value of carotid IMT, the frequency of atherosclerotic plaque deposition, the serum levels of LDL-cholesterol, lipoprotein(a), and lipid peroxides, and the incidence of small dense LDL (particle diameter 相似文献   

Serum salusin-alpha levels are decreased and correlated negatively with carotid atherosclerosis in essential hypertensive patients.

Salusin-alpha is a new bioactive peptide with mild hypotensive and bradycardic effects. Our recent study showed that salusin-alpha suppresses foam cell formation in human monocyte-derived macrophages by down-regulating acyl-CoA:cholesterol acyltransferase-1, contributing to its anti-atherosclerotic effect. To clarify the clinical implications of salusin-alpha in hypertension and its complications, we examined the relationship between serum salusin-alpha levels and carotid atherosclerosis in hypertensive patients. The intima-media thickness (IMT) and plaque score in the carotid artery, blood pressure, serum levels of salusin-alpha, and atherosclerotic parameters were determined in 70 patients with essential hypertension and in 20 normotensive controls. There were no significant differences in age, gender, body mass index, fasting plasma glucose level, or serum levels of high-sensitive C-reactive protein, high- or low-density lipoprotein (LDL) cholesterol, small dense LDL, triglycerides, lipoprotein(a), or insulin between the two groups. Serum salusin-alpha levels were significantly lower in hypertensive patients than in normotensive controls. The plasma urotensin-II level, maximal IMT, plaque score, systolic and diastolic blood pressure, and homeostasis model assessment for insulin resistance (HOMA-IR) were significantly greater in hypertensive patients than in normotensive controls. In all subjects, maximal IMT was significantly correlated with age, systolic blood pressure, LDL cholesterol, urotensin-II, salusin-alpha, and HOMA-IR. Forward stepwise multiple linear regression analysis revealed that salusin-alpha levels had a significantly independent and negative association with maximal IMT. Serum salusin-alpha levels were significantly lower in accordance with the severity of plaque score. Our results suggest that the decrease in serum salusin-alpha, an anti-atherogenic peptide, may be associated with carotid atherosclerosis in hypertensive patients.     

颈动脉粥样硬化与血管性痴呆的相关性分析

目的探讨颈动脉粥样硬化对血管性痴呆发生、发展的影响。方法对61例血管性痴呆（VaD）患者（VaD组）及70例健康体检者（对照组）行高频超声检查,测定其颈总动脉、颈内动脉内-中膜厚度（IMT）及内径,颈动脉粥样硬化斑块的发生情况及斑块性质,采用全自动生化分析仪测定血TC、TG、HDL—C及LDL-C水平。结果VaD组颈总动脉IMT及颈内动脉IMT均明显大于对照组,颈总动脉及颈内动脉内径均明显小于对照组（P均〈0．05）;VaD组斑块发生率明显高于对照组（P〈0．05）;TC、TG、LDL-C水平均明显高于对照组、HDL-C明显低于对照组（P均〈0．05）。结论颈动脉粥样硬化形成与VaD的发生密切相关。     

Increased human urotensin II levels are correlated with carotid atherosclerosis in essential hypertension

BACKGROUND: Circulating blood levels of human urotensin II (U-II), the most potent vasoconstrictor peptide identified to date, are increased in patients with essential hypertension. Our previous studies showed that U-II accelerates human macrophage foam cell formation and vascular smooth muscle cell proliferation, suggesting development of atherosclerotic plaque. In this study, we demonstrated a correlation between plasma U-II level and progression of atherosclerosis in hypertensive patients. METHODS: The intima-media thickness (IMT) and plaque score in the carotid artery, blood pressure (BP), plasma levels of U-II, and atherosclerotic parameters were determined in 50 hypertensive patients and 31 normotensive controls. RESULTS: Plasma U-II level, maximum IMT, plaque score, systolic BP, and homeostasis model assessment for insulin resistance (HOMA-IR) were significantly greater in hypertensive patients than normotensive controls. Age, gender, body mass index, and serum levels of high-sensitive C-reactive protein (CRP), HDL and LDL cholesterols, small dense LDL, triglycerides, lipoprotein(a), insulin, and fasting plasma glucose level were not significantly different between the two groups. In all subjects, plasma U-II level showed significant positive correlations with systolic BP, maximum IMT, plaque score, and HOMA-IR. Multiple logistic regression analysis indicated that the contribution of plasma U-II levels to carotid plaque formation (plaque score >/=1.1) was significantly still greater with a 60% increase than those of established risk factors, such as age, systolic BP, high-sensitive CRP, small dense LDL, and HOMA-IR. CONCLUSIONS: Our results suggest that increased levels of U-II may play a crucial role in the development of carotid atherosclerosis in hypertensive patients.     

复方芪参降脂饮对不同证型颈动脉粥样硬化患者易损斑块稳定性的影响

目的观察复方芪参降脂饮对颈动脉粥样硬化(AS)患者易损斑块稳定性的影响。方法 258例颈AS斑块患者,按中医辨证分为痰湿阻滞证、瘀阻脉络证、浊毒内蕴证和肝肾亏虚证、气虚证5型。给予复方芪参降脂饮口服,疗程为6个月。检查各证型患者治疗前后颈动脉斑块内膜中层厚度(IMT)、斑块面积、斑块积分及血脂、高敏C-反应蛋白(hs-CRP)变化。结果颈AS患者易损斑块分布以瘀阻脉络证和浊毒内蕴证组远大于其他证组(P<0.05)。治疗后瘀阻脉络证、浊毒内蕴证、气虚证组颈动脉易损斑块IMT、斑块面积、斑块积分及血清总胆固醇(TC)、低密度脂蛋白(LDL-C)、hs-CRP水平较治疗前显著降低(P<0.05)。结论复方芪参降脂饮对稳定瘀血、浊毒、气虚证易损斑块效果明显。其作用机制可能是通过调脂及抗炎作用实现的。     

Relationship between serum insulin-like growth factor-1 levels and Alzheimer's disease and vascular dementia

OBJECTIVES: To determine whether decreased serum insulin-like growth factor-1 (IGF-1) levels could be a risk factor for dementia in older people. DESIGN: Case control study. SETTING: Showa University Karasuyama Hospital, Tokyo, Japan. PARTICIPANTS: A total of 436 Japanese elderly subjects: 106 patients with Alzheimer's disease (AD), 103 patients with vascular dementia (VaD), and 227 age-matched controls without dementia. MEASUREMENTS: Serum concentrations of IGF-1 and atherogenic lipoproteins, carotid artery intima-media thickness (IMT), and plaques were determined. RESULTS: Mini-Mental State Examination (MMSE) scores were positively correlated with serum IGF-1 concentrations as well as mean blood pressure or body mass index and were negatively correlated with age, serum low-density lipoprotein cholesterol and lipoprotein(a) concentrations, and carotid IMT. Serum IGF-1 concentrations had a significant inverse correlation with carotid IMT. Analysis across the IGF-1 quartiles revealed a threshold effect of low IGF-1 on MMSE score in subjects with the IGF-1 levels of 140 ng/mL or less (50% percentile) versus those with IGF-1 levels greater than 140 ng/mL. Multiple logistic regression concerning AD and VaD retained serum IGF-1 concentrations of 140 ng/mL or less and carotid IMT of 0.9 mm or more. Patients with AD and VaD had significantly lower IGF-1 concentrations and greater mean IMT than nondemented controls. CONCLUSION: These results suggest that decreased serum IGF-1 level and the progression of carotid atherosclerosis could play a role as independent risk factors for dementia.     

Increased levels of insulin-like growth factor binding protein-3 in hypertensive patientswith carotid atherosclerosis

BackgroundIt has been proven that the intima–media thickness (IMT) of the carotid artery increases in patients with essential hypertension. Serum levels of insulin-like growth factor-1 (IGF-1) increase in hypertensive patients with ventricular hypertrophy. However, the relationship between carotid atherosclerosis and serum levels of IGF-1 and its binding protein-3 (IGFBP-3) in patients with essential hypertension has not been established.MethodsThe carotid IMT, blood pressure (BP), serum lipid profiles, and serum IGF-1 and IGFBP-3 contents were determined in 54 hypertensive patients (19 with and 35 without carotid plaque) and 52 normotensive controls without plaque.ResultsSystolic, diastolic, and mean BPs and serum IGFBP-3 level were significantly higher in the hypertensive patients (with and without plaque) than in the normotensive controls. The IGFBP-3 level correlated with systolic BP (r = 0.204, P = .0354). Age, gender, body mass index, and serum levels of HDL cholesterol, triglycerides, lipoprotein(a), lipid peroxides, insulin, and fasting plasma glucose did not differ significantly among the three groups. Hypertensive patients with plaque, compared with those without plaque or the normotensive controls, had the highest values of carotid IMT, LDL cholesterol, IGF-1, and IGFBP-3. Multiple logistic regression analysis revealed that the IGFBP-3 level was associated with a ninefold (95% confidence interval 2.6–31) higher risk of carotid plaque formation compared with LDL cholesterol or IGF-1 levels.ConclusionsThese results suggest that an increased level of IGFBP-3 may play a crucial role in the development of carotid atherosclerosis in hypertensive patients.     

荷丹片联合阿托伐他汀对颈动脉粥样硬化患者炎性细胞因子的干预影响

目的 探讨荷丹片联合阿托伐他汀对颈动脉粥样硬化患者的治疗作用及对炎性细胞因子的干预影响.方法 选取60例颈动脉粥样硬化患者,随机分为对照组和观察组.对照组给予阿托伐他汀治疗,观察组在对照组治疗基础上加服荷丹片,两组患者均给药6个月.观察两组患者治疗前后血清三酰甘油(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、颈动脉内膜-中膜厚度(IMT)、颈动脉斑块面积,炎性标记物包括高敏C反应蛋白(hs-CRP)、白细胞介素6(IL-6)、白细胞介素10(IL-10)、基质金属蛋白酶3(MMP-3).结果 治疗6个月,两组患者TG、LDL-C、TC水平较治疗前明显降低(P<0.05),HDL-C水平明显升高(P<0.05),IMT、斑块面积均较治疗前减小(P<0.05),而观察组的TG、TC、LDL-C水平较对照组降低更明显(P<0.05),HDL-C水平较对照组升高(P<0.05),IMT、斑块面积均较对照组明显减小(P<0.05).炎性细胞因子IL-6、hs-CRP、MMP-3,观察组比对照组下降更明显(P<0.05),而IL-10观察组较对照组升高更明显(P<0.05).结论 荷丹片联合阿托伐他汀对颈内动脉粥样硬化患者有较好的作用,并具有较好的抗炎作用.     

颈动脉粥样硬化斑块性质、血清hs-CRP水平在脑梗死发病预测及病情判定中的应用

目的观察脑梗死患者颈动脉粥样硬化斑块性质及血清超敏-C反应蛋白（hs-CRP）水平变化,并分析两指标在脑梗死发病预测及病情判定中的意义。方法研究对象为83例前循环脑梗死患者（梗死组）和50例健康体检者（对照组）,分别采用颈动脉彩超检查颈动脉粥样硬化斑块及其性质、内一中膜厚度（IMT）,采用免疫比浊法检测血清hs．CRP水平,分析血清hs-CRP水平与IMT及神经功能障碍程度的关系。结果梗死组斑块阳性率、IMT及血清hs-CRP水平均高于对照组,且不稳定斑块者血清hs-CRP、IMT及同侧脑梗死发生率均高于稳定斑块者,差异均有统计学意义（P均〈0．05）;血清hs—CRP水平与IMT及神经功能障碍程度均呈正相关,P均〈0．05（r值分别为0．67、0．58）。结论脑梗死患者颈动脉粥样硬化斑块阳性率及血清hs-CRP水平升高,且颈动脉粥样硬化斑块稳定性与脑梗死发生密切相关,血清hs-CRP水平与脑梗死患者颈动脉粥样硬化斑块稳定性及神经功能损害程度有关,两者联合检测有助于脑梗死发病的预测及病情判断。     

颈动脉粥样斑块和脂质代谢的关系

目的探讨颈动脉粥样斑块和脂质代谢的关系方法检测９８例老年颈动脉粥样斑块患者和９８例正常老年人血浆中血脂、氧化低密度脂蛋白、丙二醛水平结果病例组中,总胆固醇、低密度脂蛋白胆固醇、载脂蛋白Ｂ、氧化低密度脂蛋白、丙二醛均高于对照组（Ｐ＜００５）,载脂蛋白Ａ低于对照组（Ｐ＜００５）。结论脂质代谢异常,氧化低密度脂蛋白、丙二醛等参与老年人颈动脉粥样斑块的形成。     

Low-density lipoprotein cholesterol bulk is the pivotal determinant of atherosclerosis in familial hypercholesterolemia

This study's aim was to determine whether biochemical risk factors such as lipoprotein(a), fibrinogen, homocysteine, and insulin, as well as low-density lipoprotein (LDL) particle size, were predictive of carotid intimamedia thickness (IMT), an early marker of atherosclerosis, in subjects with familial hypercholesterolemia (FH). We also determined whether plasma 8-isoprostane, as a marker of in vivo lipid oxidation, correlated with carotid IMT. Twenty-two homozygous and 20 heterozygous subjects with FH were compared with 20 normocholesterolemic controls. On univariate analysis, plasma total and LDL cholesterol, the cholesterol-years score (CYS), lipoprotein(a), and fibrinogen, but not homocysteine or insulin, were positively related, and high-density lipoprotein (HDL) cholesterol was negatively related to carotid IMT. However, on multivariate analysis, only LDL cholesterol and the CYS predicted carotid IMT (multiple r = 0.82; r2 = 0.68; p <0.0001). The subjects with FH had large rather than small dense LDL particles, and plasma 8-isoprostane levels were not increased. LDL cholesterol and the CYS, or "cholesterol bulk" are the pivotal determinants of atherosclerosis and are the strongest predictors of carotid IMT in FH.     

瑞舒伐他汀对急性冠脉综合征患者颈动脉斑块的作用

目的：探讨瑞舒伐他汀对急性冠脉综合征患者颈动脉斑块的影响及机制。方法：对随机70例急性冠脉综合征患者常规治疗外,加用瑞舒伐他汀10mg,每晚1次。治疗6个月后测总胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）、高密度脂蛋白胆固醇（HDL—C）及超敏C反应蛋白（hs-CRP）的水平,采用彩色多普勒测定治疗前后颈动脉内膜的厚度及颈动脉斑块的变化。结果：瑞舒伐他汀治疗后6个月,患者TC、LDL-C、hs—CRP显著低于治疗前水平（P〈0．01）。双侧颈动脉内膜厚度及颈动脉斑块缩小程度,与治疗前比较有显著差异（P〈0．01）。结论：瑞舒伐他汀通过降低血脂、降低hs—CRP水平,稳定急性冠脉综合征患者颈动脉斑块。     

老年血液透析者颈动脉粥样硬化与C-反应蛋白的关系

目的探讨老年维持性血液透析（HD）患者颈动脉粥样硬化（AS）与C-反应蛋白（CRP）的关系. 方法测定33例老年及同期42例非老年HD患者临床指标、CRP及肱三头肌皮褶厚度（TSF）、上臂围（AC）、上臂肌围（AMC）;应用彩色B超测颈动脉内膜-中层厚度（IMT）及粥样硬化斑块情况. 结果老年HD患者AC、AMC、尿素氮（BUN）、血肌酐（Scr）、白蛋白（Alb）均显著低于非老年患者（P＜0.05～0.01）;而CRP水平、颈动脉平均IMT、斑块阳性率、增厚阳性率显著升高（P＜0.05～0.01）;HD患者颈动脉平均IMT与CRP、三酰甘油 （TG）、低密度脂蛋白（LDL）、年龄呈正相关,与Alb呈负相关（r=-0.053,P＜0.05）. 结论老年血液透析患者营养状况差,AS重,改善患者营养状况及微炎症、血脂异常可能减轻患者AS.     

血浆同型半胱氨酸与缺血性脑血管病患者颈动脉粥样硬化斑块的关系

目的探讨缺血性脑血管病患者血浆同型半胱氨酸（Hcy）水平与颈动脉粥样硬化斑块的关系。方法选择327例发病时间≤7 d、首次发病的缺血性脑血管病患者,其中脑梗死264例,颈内动脉系统短暂性脑缺血发作（TIA）63例。采用颈动脉彩色多普勒超声检查颈动脉内-中膜厚度（IMT）,综合评估患者颈动脉粥样硬化程度及斑块性质。并根据超声结果将患者分为IMT正常组、IMT增厚组、斑块形成组;酶联免疫吸附法测定晨起空腹血浆Hcy浓度。分析血浆Hcy水平与颈动脉粥样硬化斑块的关系。结果①327例患者中,99例为IMT正常,40例为IMT增厚,188例为粥样斑块形成。在188例斑块形成的患者中,易损斑块组82例,非易损斑块组106例。②IMT正常组、IMT增厚组、斑块形成组的血浆Hcy浓度（中位数）分别为13.6、22.3、28.6μmol/L,高同型半胱氨酸血症（HHcy）的发生率分别为40.4%（40/99）、70.0%（28/40）、75.5%（142/188）。除IMT增厚组与斑块形成组间HHcy发生率差异无统计学意义外,3组间观察指标比较差异均有统计学意义（均P〈0.05）。③易损斑块组血浆Hcy浓度和HHcy发生率分别为28.9μmol/L和82.9%,高于非易损斑块组的23.4μmol/L和69.8%,差异均有统计学意义,P〈0.05。④多因素Logistic回归分析显示,Hcy浓度增高是颈动脉粥样斑块形成的独立危险因素（OR=1.14,95%CI：1.04～1.25）结论随着血浆Hcy水平的升高,颈动脉粥样硬化程度随之升高。HHcy是颈动脉粥样硬化斑块形成的独立危险因素。     

老年脑梗死患者颈动脉粥样硬化斑块稳定性与红细胞分布宽度的关系

目的探讨老年脑梗死患者颈动脉粥样硬化斑块稳定性与红细胞分布宽度(red blood cell distribution width,RDW)之间的相关性。方法选择老年急性脑梗死伴颈动脉粥样硬化斑块患者165例,按颈动脉彩色超声结果,分为稳定斑块组45例和不稳定斑块组120例。收集一般临床资料及心血管病危险因素,测定体重指数、踝臂指数、血脂、糖化血红蛋白、肌酐、白细胞、血红蛋白、RDW、红细胞体积、高敏C反应蛋白(high sensitivity C-reactive pro-tein,hs-CRP)、血浆纤维蛋白原(fibrinogen,Fib)等,并进行组间比较。结果与稳定斑块组比较,不稳定斑块组RDW、hs-CRP、Fib明显增高,差异有统计学意义(P<0.05,P<0.01)。Spearman相关分析显示,颈动脉不稳定斑块与RDW(r=0.244,P<0.01)、hs-CRP(r=0.323,P<0.01)、Fib(r=0.164,P<0.05)呈正相关。logistic回归分析显示,校正性别、年龄及其他传统危险因素后,RDW为颈动脉不稳定斑块的危险因素(OR=2.020,95%CI:1.191～3.426,P<0.01)。结论老年脑梗死患者颈动脉粥样硬化斑块稳定性与RDW相关,RDW增高患者颈动脉粥样硬化斑块破裂的风险增加。     

血清小而密低密度脂蛋白胆固醇、同型半胱氨酸与颈动脉粥样硬化关系研究

目的探讨血清小而密低密度脂蛋白胆固醇(sdLDL-C),小而密低密度脂蛋白胆固醇与低密度脂蛋白胆固醇之比(sdLDL-C/LDL-C)及同型半胱氨酸(Hcy)与颈动脉硬化的关系,并分析sdLDL-C/LDL-C评价颈动脉斑块的价值。方法选取2017年10月至2019年10月于安徽医科大学合肥第三临床学院心内科住院并行颈动脉彩超检查的200例患者为研究对象,根据颈动脉超声结果分为颈动脉内膜中层厚度(IMT)异常组(n=122)和对照组(n=78)。其中,IMT异常组又分为IMT增厚组(n=30)及颈动脉斑块组(n=92)。Spearman相关分析sdLDL-C与年龄、体质指数(BMI)、LDL-C、高密度脂蛋白胆固醇(HDL-C)、sdLDL-C/LDL-C、超敏C反应蛋白(hs-CRP)、Hcy的相关性;二元Logistic逐步回归方程及有序多分类Logistic回归模型评估颈动脉斑块的独立危险因素。结果IMT异常组血清sdLDL-C、sdLDL-C/LDL-C和Hcy水平均明显高于对照组,差异有统计学意义(P<0.05)。颈动脉斑块组血清sdLDL-C、sdLDL-C/LDL-C和Hcy水平均明显高于IMT增厚组,差异亦均有统计学意义(P<0.001)。Logistic逐步回归分析显示年龄、糖尿病、Hcy、sdLDL-C/LDL-C、sdLDL-C是IMT增厚和颈动脉斑块的独立危险因素。结论在伴有IMT增厚、颈动脉斑块患者中sdLDL-C、sdLDL-C/LDL-C、Hcy水平显著升高。血清sdLDL-C/LDL-C、sdLDL-C、Hcy含量具有颈动脉斑块的预测价值,且是颈动脉粥样硬化的独立危险因素。     

老年2型糖尿病患者血糖漂移幅度与颈动脉粥样硬化的相关性分析

目的 探讨2型糖尿病（T2DM）患者血糖漂移水平的差异与颈动脉内膜中层厚度（IMT）的关系。方法 采用动态血糖监测系统（continuous glucose monitoring system，CGMS）对43例正常人及87例2型糖尿病患者进行连续71±10）h的血糖监测，分析日内不同时段的血糖水平、平均血糖漂移幅度（MAGE）及日间血糖平均色对差（MODD）；并用多普超声观察颈动脉粥样硬化斑块的发生率及内中膜厚度，将糖尿病者分为A组（IMT〈0．8mm）和B组（IMT≥0．8mm），与对照组C组进行比较。结果 （1）糖尿病组的血压、血糖、血脂、糖化血红蛋白（HbAlc）及体质量指数（BMI）均高于对照组（P〈0．05或P〈0．01），而高密度脂蛋白（HDL—C）则降低（P〈0．01）；B组冠心病及脑血管病的百分比、糖尿病病程、收缩压、HbAlC、BMI及低密度脂蛋白（LDL—C）较A组有增高（P〈0．05或P〈0．01）；IMT与负2h血糖的相关性最强（r=0，88，P〈0．01），而与胰岛素敏感指数（ISI）呈负相关。（2）T2DM组的颈动脉粥样硬化斑块的发生率及IMT增加（P〈0．001）；而CGMS显示的24hMBG、MAGE与IMT的相关性强（r=0．181，P〈0．01）.（3）HbAlc与MBG呈正相关（r=0．82，P〈0．01），而与MAGE、NGE及MODD均不相关。（4）研究还证明：CGMS观测值与血浆葡萄糖值及指端毛细血管血糖均呈正相关（r=0．93，r=0．95，P均〈0．001）。结论 T2DM患者的颈动脉粥样硬化不仅与血压、血糖、血脂、HbAlc及IMT有关，而且与血糖漂移水平的差异密切关联，相似的HbAlc水平其血糖漂移的程度可以不同，而血糖漂移幅度大的患者发生慢性并发症的危险性高。     

High red blood cell distribution width is closely associated with risk of carotid artery atherosclerosis in patients with hypertension

BACKGROUND:

A high red blood cell distribution width (RDW) may be associated with adverse outcomes in patients with heart failure and risk of death, and cardiovascular events in people with previous myocardial infarction. Ultrasound detection of carotid plaque helps to identify asymptomatic patients with advanced subclinical atherosclerosis, which can predict risk of cardiovascular death or myocardial infarction. However, the relationship of RDW and carotid artery atherosclerosis in hypertensive people is less certain.

OBJECTIVE:

To evaluate the association between RDW and carotid artery atherosclerosis in people with hypertension.

METHODS:

RDW was determined using a Coulter counter together with white blood cell count in 156 hypertensive inpatients 60 to 85 years of age. Carotid intimal-medial thickness (IMT) and carotid atherosclerotic plaques were identified by ultrasound imaging. Total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol and triglyceride levels were determined using a multichannel analyzer. Systolic and diastolic blood pressures were measured manually.

RESULTS:

The number of patients with carotid artery atherosclerotic plaque, as well as the carotid IMT to inner diameter ratio, were significantly different among the different RDW groups of hypertensive inpatients (P<0.01). With linear regression analysis, increased carotid IMT and higher white blood cell count were identified to be significant and independent contributors to the RDW of hypertensive inpatients (P<0.05).

CONCLUSIONS:

A close relationship between high RDW and IMT, and the incidence of carotid plaque, was identified in 156 hypertensive inpatients.     

老年冠心病患者餐后高甘油三酯血症与颈动脉及股动脉粥样硬化的关系

探讨餐后血脂代谢异常与动脉粥样硬化的关系。47例冠心病患者及30例对照组禁食12－14h后，均接受低脂实验餐负荷试验。分别于空腹及餐后4h采血测定血清甘油三酯、总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、载脂蛋白A及载脂蛋白B的浓度。利用二维彩色多普勒超声，检测两组颈动脉内膜中层厚度及颈动脉、股动脉斑块的发生状况。与对照组相比，冠心病组空腹血清总胆固醇、载脂蛋白B浓度显著增高，冠心病组餐后4h血清甘油三酯、低密度脂蛋白胆固醇浓度显著增高（P＜0．05），餐后血清高密度脂蛋白胆固醇浓度显著降低（P＜0．05）。冠心病组颈总动脉内膜中层厚度、颈内动脉内膜中层厚度、颈动脉及股动脉斑块指数均较对照组增高（P＜0．01）。餐后血清甘油三酯与空腹血清甘油三酯浓度呈正相关。颈动脉斑块指数与空腹总胆固醇呈正相关。提示餐后高甘油三酯血症可能与动脉粥样硬化有关。