糖尿病患者血脂水平与动脉粥样硬化的相关性分析

目的 探讨不同年龄段2型糖尿病(T2DM)患者的血脂水平与动脉粥样硬化(AS)的关系。方法 177例T2DM患者分为单纯T2DM组和T2DM+AS组, 对照组为177例健康中老年人, 各组分为两个年龄亚组(41～65岁组和66～85岁组)。检测各组患者血脂水平, 彩超测定颈动脉内-中膜厚度(IMT), 分析血脂水平、AS和IMT程度的相关性。结果 T2DM+AS组与单纯T2DM组相比, 血脂水平(总胆固醇和低密度脂蛋白)均明显升高(P<0.05);而单纯T2DM组与对照组差异无统计学意义(P>0.05)。T2DM+AS组IMT明显高于单纯T2DM组及空白对照组(P<0.05)。在66～85岁组中, T2DM+AS与单纯T2DM患者的血脂水平差异有统计学意义(P<0.05), 并且血脂水平与IMT呈正相关。结论 T2DM患者AS发生率与血脂水平呈正相关, 且随着年龄的增加, 相关性愈发明显。     

Arterial Thickness and Immunometabolism: The Mediating role of Chronic Exercise

Metabolic alterations and cardiovascular diseases, such as atherosclerosis, are associated with lifestyle modifications, particularly the increase of physical inactivity and poor eating habits, which contribute to one of the main causes of death in modern times. Cardiovascular diseases are positively correlated with several illnesses, such as obesity, hypertension and dyslipidemia, and these disorders are known to contribute to changes in immune cells, cytokines and metabolism. Atherosclerosis is a chronic inflammatory disease characterized by the formation of lipid plaques and fibrous tissue (atheroma) in the artery walls and this process is related to the oxidation of LDL-c (low density lipoprotein) and the formation of a particle, termed LDLox, which can generate toxic injury to the vessel wall. In this atherogenic process there is an inflammatory response generated by the injury in the vascular endothelium, which in itself is able to express and secrete a variety of molecules, such as myeloid colony-stimulating factors (M-CSF), monocyte chemotactic protein-1 (MCP-1) and tumor necrosis factor alpha (TNF-α), that act as activators of the immune system. Therefore, the main purpose of this review is to highlight the immuno-metabolic alterations involving the thickening and stiffness of arteries observed in atherosclerosis, and how chronic exercise can act as an anti-inflammatory and anti-atherogenic approach.     

高频超声监测舒降之干预颈动脉粥样硬化的临床研究

目的　评价舒降之对颈动脉粥样硬化病变的影响。方法高频超声监测随访 2年舒降之治疗组的颈动脉管壁改变。结果　舒降之治疗 2年后IMT和IMT横截面积总体呈下降趋势 ,IMT变化速度为年下降 0 .0 3mm。颈动脉超声分型的变化无显著意义 ,但粥样斑块分型于随访前后发生了一定的变化 ,差异显著 (P <0 .0 5 )。结论降脂药物能减轻甚至逆转早期动脉壁粥样病变 ,高频超声是首选的无创监测手段。     

急性脑梗死患者血浆组织因子及血栓调节蛋白的研究

目的通过对急性脑梗死患者血浆中组织因子(Tf)及血栓调节蛋白(Tm)浓度的测定,了解Tf及Tm与急性脑梗死间的关系,以及与脑梗死相关因素间的关系.方法选择急性脑梗死患者76例,于发病后72h内取血,分别测定血浆Tf和Tm浓度,同时选择年龄、性别匹配的47例健康者做对照.采用SPSS11.5软件包进行统计分析.结果急性脑梗死患者血浆Tf为(384.06±179.68)pg/ml,明显高于对照组的(83.25±32.98)pg/ml(P＜0.01);Tm为(2.899±2.901)ng/ml,明显低于对照组的(3.921±1.384)ng/ml(P＜0.05).在急性脑梗死组中1个系统单发组Tf为(300.15±139.17)pg/ml,2个系统多发组Tf为(417.61±209.43)pg/ml,程度重者Tf浓度明显增高(P＜0.01);而1个系统单发组Tm为(3.177±2.399)ng/ml,显著高于2个系统多发组的(2.709±1.882)ng/ml(P＜0.05);既望有脑血管病史组的Tm为(7.589±1.891)ng/ml,高于无脑血管病组的(3.235±2.294)ng/ml(P＜0.01).既往有脑血管病史的Tf为(391.44±222.28)pg/ml,明显高于无脑血管病史组(P＜0.01).结论急性脑梗死患者的血浆Tf浓度明显增高,血浆Tm浓度明显降低.血浆Tf浓度高,Tm浓度低预示病情严重.     

Highly sensitive H2O2-scavenging nano-bionic system for precise treatment of atherosclerosis

In atherosclerosis, chronic inflammatory processes in local diseased areas may lead to the accumulation of reactive oxygen species (ROS). In this study, we devised a highly sensitive H₂O₂-scavenging nano-bionic system loaded with probucol (RPP-PU), to treat atherosclerosis more effectively. The RPP material had high sensitivity to H₂O₂, and the response sensitivity could be reduced from 40 to 10 μmol/L which was close to the lowest concentration of H₂O₂ levels of the pathological environment. RPP-PU delayed the release and prolonged the duration of PU in vivo. In Apolipoprotein E deficient (ApoE^?/?) mice, RPP-PU effectively eliminated pathological ROS, reduced the level of lipids and related metabolic enzymes, and significantly decreased the area of vascular plaques and fibers. Our study demonstrated that the H₂O₂-scavenging nano-bionic system could scavenge the abundant ROS in the atherosclerosis lesion, thereby reducing the oxidative stress for treating atherosclerosis and thus achieve the therapeutic goals with atherosclerosis more desirably.