糖尿病并微血管病变患者血小板CD62p及CD63的表达及其临床意义

目的观察糖尿病肾病（DN）患者血小板α颗粒膜糖蛋白（CD62p）和溶酶体膜蛋白（CD63）的变化及其临床意义。方法采用流式细胞术（FCW）检测158例糖尿病（DM）患者血浆中CD62p和CD63的阳性表达率,并与45例健康对照者进行比较。结果单纯性DM组血浆CD62p和CD63的阳性表达率显著高于对照组（P〈0.01）,DN微量白蛋白组及大量白蛋白组均显著高于单纯性DM组（均P〈0.01）,DN尿毒症组显著低于对照组（P〈0.01）。结论2型糖尿病（T2DM）及DN患者血小板活化均增强,而尿毒症期血小板活化功能低下,血浆CD62p和CD63的测定对DN早期诊断和病情监测有重要的临床价值。     

降糖治疗对2型糖尿病患者CD62P、CD63表达的影响

采用流式细胞仪检测了2型糖尿病（T2DM）患者强化治疗前后和48例健康者的血浆CD62P、CD63阳性表达率。结果显示,T2DM组治疗前CD62P、CD63阳性表达率显著高于对照组（P〈0.01）,治疗后显著降低。提示T2DM患者活化血小板阳性表达率显著升高,强化血糖控制、改善代谢紊乱有助于拮抗血小板活化。     

2型糖尿病与CD_(62)p、CD_(63)表达关系的临床研究

目的　 观察 2型糖尿病 (DM)患者全血血小板α -颗粒膜糖蛋白 (CD62 p)、血小板溶酶体膜糖蛋白 (CD63 )水平及其临床价值。 方法　采用流式细胞仪测定 116例 2型糖尿病患者 (其中大血管病变 4 5例 ,微血管病变 39例 ,无血管病变 32例 )和 32名健康人全血CD62 p、CD63 水平。 结果 　 2型糖尿病大血管病变组、微血管病变组、无血管病变组CD62 p、CD63 平均水平分别为 39.38%和 2 0 .4 7% ,2 8.31%和 14 .75% ,12 .13%和 9.57% ,显著高于对照组的 3.36 %和 2 .6 8% (均P <0 .0 1) ,大血管病变组和微血管病变组CD62 p和CD63 平均水平均高于无血管病变组 ,有显著性差异 (均P <0 .0 1) ;CD62 p与CD63 、TG、病程呈正相关关系 (均P <0 .0 1)。 结论　CD62 p、CD63 可作为 2型糖尿病患者监测病情变化及早期诊断血管并发症的重要指标。     

降糖治疗对2型糖尿病患者CD62P、CD63表达的影响

采用流式细胞仪检测了2型糖尿病(T2DM)患者强化治疗前后和48例健康者的血浆CD62P、CD63阳性表达率.结果显示,T2DM组治疗前CD62P、CD63阳性表达率显著高于对照组(P＜0.01),治疗后显著降低.提示T2DM患者活化血小板阳性表达率显著升高,强化血糖控制、改善代谢紊乱有助于拮抗血小板活化.     

2型糖尿病合并冠心病患者CD62P、CD63、vWF与vWF—cp检测及其临床意义

目的探讨2型糖尿病合并冠心病患者血小板活化指标血小板α颗粒膜糖蛋白（CD62P）、溶酶体膜蛋白（CD63）与血管内皮损伤指标血管性血友病因子（vWF）、血管性血友病因子裂解酶（vwF-cp）的变化及其临床意义。方法对2型糖尿病合并冠心病组（DM＋CHD组）52例,单纯2型糖尿病组（DM组）68例及正常对照组50例,分别检测CD62P、CD63、vWF和vWF-cp水平。结果DM＋CHD组CD62P、CD63、vWF水平高于DM组（P〈0．01）。vWF-cp活性低于DM组（P〈0．05）;DM组CD62P、CD63、vWF水平高于正常对照组（P〈0．05）,vWF-cp活性低于正常对照组（P〈0．01）;差异均有统计学意义。结论CD62P、CD63、vWF水平升高,vWF—cp活性降低可能与2型糖尿病发生、发展、内皮损伤有关,而且2型糖尿病合并冠心病患者,其血小板活化和血管内皮损伤程度更严重。     

急性脑梗死患者血小板CD62P和CD63的表达及意义

目的观察急性脑梗死（ACI）患者血小板α颗粒膜糖蛋白（CD62P）、溶酶体膜蛋白（CD63）的表达变化,并探讨其临床意义。方法采用全血流式细胞术检测50例ACI患者（ACI组）和30例正常健康体检者（对照组）血小板CD62P、CD63的表达。结果 ACI组CD62P、CD63表达量分别为15.45%±3.58%、11.26%±2.30%,对照组分别为4.12%±0.84%、3.96%±0.22%;两组比较,P均〈0.05。血小板CD62P、CD63的表达与ACI合并高血压病、糖尿病和高脂血症均有关（P均〈0.05）。结论 ACI患者血小板CD62P、CD63表达增加,二者在ACI发生过程中发挥重要作用。     

2型糖尿病血小板膜糖蛋白CD62p、CD63的变化及影响因素

目的　探讨 2型糖尿病患者血小板膜糖蛋白CD6 2p、CD6 3的变化及临床价值。方法　用流式细胞术测定64例 2型糖尿病患者 (有微血管病变者 3 1例 ,无微血管病病变者 3 3例 )及 3 0例健康人血小板膜糖蛋白CD6 2 p、CD6 3,并对部分患者作治疗前后的动态观察。结果　血小板膜糖蛋白CD6 2 p、CD6 3的表达在 2型糖尿病患者中明显高于正常对照 ,伴微血管病变组明显高于无微血管病变组。部分患者在血糖控制后并坚持服用阿斯匹林 6个月 ,所有指标与治疗前比较差异无显著性。多元逐步线性回归分析表明在 2型糖尿病病人中 ,CD6 2 p、CD6 3水平与胰岛素敏感指数、年龄及病程有关。结论　血小板膜糖蛋白CD6 2p、CD6 3测定对判断 2型糖尿病病人血小板活化和微血管病变的早期诊断、病情分析有重要的临床价值 ,其水平变化与胰岛素敏感指数、年龄及病程有关     

早期联合检测血小板膜糖蛋白及血小板参数对脓毒症患者的临床意义

目的:探讨早期联合检测血小板膜糖蛋白表达水平及血小板参数对脓毒血症患者的临床意义。方法:选取40例脓毒症患者,根据急性生理与慢性健康状况(APACHE)Ⅱ评分分为1组(10分)、2组(10~19分)和3组(20分),所有患者均在确诊24 h内采用全自动血细胞仪检测血小板计数(PLT)、大血小板比率(P-LCR)、血小板平均体积(MPV)、血小板分布宽度(PDW);采用流式细胞仪检测血小板膜糖蛋白CD62P、CD63的表达水平。结果:1随着APACHEⅡ评分升高,患者PLT显著下降,P-LCR、MPV、PDW均显著上升(P0.05);2随着APACHEⅡ评分升高,CD62P、CD63表达均上调(P0.05);3Pearson相关性分析显示:随着PLT的下降,血小板MPV、PDW、P-LCR均逐渐上升,血小板MPV、PDW、P-LCR与PLT呈高度负相关性(r=-0.442、-0.395、-0.472,P0.01),PLT与APACHEⅡ评分呈高度负相关(r=-0.602,P0.01);血小板膜糖蛋白CD62P、CD63表达水平与APACHEⅡ评分呈高度正相关(r=0.603、0.619,P0.01);血小板MPV与CD62P、CD63表达水平均呈正相关(r=0.382、0.310,P0.05),血小板P-LCR、PLT、PDW与CD62P、CD63表达水平之间无明显相关性(P0.05)。结论:脓毒症患者早期体内存在血小板高激活状态,根据血小板膜糖蛋白CD62P、CD63及血小板参数可初步判定脓毒症患者病情的变化。     

老年高粘滞综合征血小板膜糖蛋白亚群测定及意义

目的 研究老年高粘滞综合征（HVS）与血小板膜糖蛋白亚群变化的关系。方法 用流式细胞术对160例老年HVS患者治疗前后联合测定CD62p、CD63、CD31、CD41,对比正常老年组、正常中青年组测定值的异同,并对比血液流变学的异同。结果 （1）老年单纯HVS与伴有并发症的HVS患者治疗前CD62p、CD62、CD31均显著高于正常老年组及正常中青年组。（2）联合检测可提高老年HVS的阳性率至92．5％－100％,其敏感性达96％。（3）正常老年组与正常中青年血小板膜糖蛋白阳性表达无差异。（4）巴米尔对CD62p、CD63、CD31有明显作用,且与血流变ηb、ηp指标的改变呈明显相关。结论 活化血小板参与了老年HVS发生和发展,血小板膜糖蛋白亚群的阳性表达增高是老年HVS早期诊断指标之一,用流式细胞术（FCM）检测血小板膜糖蛋白有助于进一步阐述抗血小板药物在老年HVS患者中的作用机制。     

活化血小板糖蛋白测定与冠心病相关性研究

目的 探讨活化血小板糖蛋白与冠心病的相关性.方法 选取我院2009年12月-2010年6月收治的60例冠心病患者及40例健康体检者(对照组)为研究对象,冠心病患者按照病变程度分为稳定型心绞痛(SA)组34例,不稳定型心绞痛(UA)组18例,急性心肌梗死(AMI)组8例,均检测膜糖蛋白(CD62P)、溶酶体膜糖蛋白(CD63)阳性表达.结果 SA组、UA组、AMI组的CD62P、CD63阳性表达分别与对照组比较,差异有统计学意义(P＜0.05);SA组、UA组、AMI组三组间CD62P、CD63阳性表达比较,差异有统计学意义(P＜0.05).结论 60例冠心病患者的血小板活化程度较健康者显著升高,血小板糖蛋白的检测有助干预测病变的严重程度和进展情况,可作为冠心病患者病变程度的一个参考指标.     

Neutrophil surface expression of CD11b and CD62L in diabetic microangiopathy

The aims of the study are (1) assessment of cell surface expression of adhesion molecules CD11b and CD62L on peripheral blood neutrophils in patients with type 2 diabetes and microangiopathy; (2) analysis of serum levels of soluble adhesion molecules: E-selectin (sE-selectin), soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1 (sVCAM-1) and von Willebrand factor (vWF) and; (3) evaluation of systemic inflammatory markers like interleukin-6 (IL-6), soluble interleukin-6 receptor (IL-6Rs), high sensitivity C-reactive protein (hsCRP) and fibrinogen. Thirty patients with type 2 diabetes and microangiopathy were enrolled in the study. The study group was compared to 22 patients with type 2 diabetes without microangiopathic compliations. The control group included 20 healthy volunteers. Flow cytometry was used to analyse surface expression of adhesion molecules. Both inflammatory markers and soluble adhesion molecules were determined by immunoenzymatic assay. A significant increase in neutrophil surface CD11b expression (P < 0.01) as well as decrease in surface CD62L expression (P < 0.01) were observed in the group with diabetic microangiopathy in comparison with diabetic group without microangiopathic complications and healthy controls. Moreover, significantly higher concentrations of sICAM-1 (P < 0.05), sVCAM-1 (P < 0.05), sE-selectin (P < 0.05), vWF (P < 0.01), hsCRP (P < 0.01), IL-6 (P < 0.01) and fibrinogen (P < 0.001) were also found in patients with microangiopathy in comparison with the control group. IL-6Rs concentrations did not significantly vary between groups. We concluded (1) diabetic microangiopathy is accompanied by increase in CD11b expression and decrease in CD62L expression on peripheral blood neutrophils; (2) in diabetic microangiopathy rise in CD11b expression indicates neutrophil activation and intensified adhesion; (3) the development of diabetic microangiopathy is accompanied by an increase in soluble adhesion molecules and inflammatory markers concentrations in the blood.     

2型糖尿病合并冠心病患者血小板表面CD62P和CD40L的表达水平

目的 探讨2型糖尿病合并冠心病患者血小板表面CD62P和CD40L的表达水平及其和血清高敏C反应蛋白的关系.方法 选择单纯冠心病患者34例、单纯2型糖尿病患者33例、2型糖尿病合并冠心病患者30例及对照者30例,采用流式细胞术分别检测血小板表面CD62P和CD40L的表达水平,并与血清高敏C反应蛋白作相关分析.结果 2型糖尿病合并冠心病组血小板CD62P、CD40L和高敏C反应蛋白水平较对照组、单纯冠心病组及单纯2型糖尿病组显著升高(P<0.01),血小板CD62P和CD40L与血清高敏C反应蛋白水平呈正相关(r分别为0.343和0.495,P均<0.05).结论 2型糖尿病合并冠心病患者的血小板表面CD62P和CD40L表达水平明显升高,并与血清高敏C反应蛋白明显正相关.血小板表面CD62P和CD40L的表达水平可能是预示糖尿病患者合并冠状动脉粥样硬化的重要指标.     

2型糖尿病患者血清可溶性细胞间粘附分子1水平变化及与血管内皮功能的关系

目的研究2型糖尿病患者血清可溶性细胞间粘附分子1水平的变化,并以血浆假性血友病因子水平作为内皮功能损伤的指标,观察细胞间粘附分子1与血管内皮细胞功能损伤之间的关系。方法62例2型糖尿病患者按照有无血管并发症分为无血管病变组(n=19)、微血管病变组(n=20)和大血管病变组(n=23),选择20例健康者作为对照组。应用酶联免疫吸附法检测各组患者血清可溶性细胞间粘附分子1水平和血浆假性血友病因子水平,并测定糖脂代谢指标和尿微量白蛋白水平。结果2型糖尿病患者血清可溶性细胞间粘附分子1水平明显高于健康对照组(P<0.01),在无血管病变组、微血管病变组和大血管病变组的水平逐步升高(P<0.01);血浆假性血友病因子水平在大血管病变组高于微血管病变组,微血管病变组高于无血管病变组(P<0.01),无血管病变组与对照组间无显著性差异。可溶性细胞间粘附分子1与血浆假性血友病因子、甘油三酯、收缩压、舒张压呈正相关(r分别为0.43、0.45、0.52和0.62,P<0.01)。结论细胞间粘附分子1可能参与了2型糖尿病血管病变的发生和发展,可作为早期2型糖尿病患者慢性血管并发症尤其是大血管病变发生的预测及监测指标。     

单核细胞和中性粒细胞CD11b高表达与2型糖尿病及其大血管病变相关

采用免疫荧光技术和流式细胞仪测定对照组及2型糖尿病患者组单核细胞和中性粒细胞CD11b的表达,发现合并大血管病变患者的单核细胞和中性粒细胞CD1b水平均明显高于不合并大血管病变的2型糖尿病患者[3.85±1.46对2.88±0.92,6.36(4.58-9.79)对4.23(3.70-4.83),均P<0.01],单核细胞CD11b、中性粒细胞CD11b高表达可能是2型糖尿病大血管病变发生的独立危险因素.     

Platelet activation in diabetic cardiovascular autonomic neuropathy.

AIMS: Platelet activation is known to be associated with arrhythmic effects in myocardial ischaemia. The present study attempts to clarify whether diabetic cardiovascular autonomic neuropathy (CAN) is associated with intravascular platelet activation. METHODS: Platelet activation was assessed by flow cytometry analysis in 30 patients with Type 1 diabetes mellitus screened for diabetic complications. Fifteen patients showed evidence of CAN as assessed by a battery of standard cardiovascular autonomic reflex tests. Fifteen patients without CAN were then selected as a matched control group. Platelet activation was assessed by flow cytometric detection of activation-dependent platelet membrane antigens (P-selectin (CD62), thrombospondin, lysosomal GP53 (CD63) and ligand-induced binding site-1 of GPIIb/IIIa (LIBS-1)). RESULTS: Significantly more activated platelets were detected in the patients with CAN showing 20.9% (coefficient of variation (CV) 44%) CD63+ (vs. 17.2% (CV 19%) in controls, P < or = 0.05), 6.4% (CV 87%) CD62+ (vs. 4.1% (CV 37%), P < or = 0.05), and 6.7% (CV 55%) thrombospondin+ (vs. 4.6% (CV 39%), P < or = 0.01) platelets, respectively. LIBS-1 on platelets was not significantly different between patients with and without CAN. No correlation was found between glucose metabolism and platelet activation. CONCLUSIONS: Cardiovascular autonomic neuropathy is associated with platelet activation in Type 1 diabetes mellitus. The high platelet activation may reflect an increased prothrombotic state in diabetic cardiovascular autonomic dysfunction.     

肝硬化患者血小板胞内Ca2+浓度、CD62P、CD63及血浆CD62P的检测

l摘fi 目的 探讨肝硬化患者与血小板a一颗粒膜蛋白(CD。。P)、血小板糖蛋白(CD。。)、血浆CD。f(SCD。I)水平及血小板[Ca’‘＊的关系。方法 利用流式细胞术检测血小板 CD。。P、CD。。,酶联免疫吸附法测定SCD。f和荧光分光光度法测定血小板[Ca‘”h。结果 肝硬化患者血小板[Ca’”]i、CD。。P、CD。。、SCD。;P分别为(103.l士 22.2)nmol/L、(47.6上 20.0)％、(47.1士 24.6)％和(67.6士 37.6)no/L,对照组分别为(57.6 t13.l)nmol/L、(3.h 0,7)％、(2.510.7)％和(24.016.5)ug/L,两组比较差异有显著性,t值为6.148—19.067,P<0.05;上消化道出血组分别为(120.3 i 18.8)urn。l/L、(64.9 i 14.7)％、(7.9 i 14二5)％和(103.6士 14.9)ug/L,无出血组分别为(91.l士 14.3)nmol/L、(3.6士 11.9)％、(30.2士 14.4)％和(40.8 i 24.0)u0.05)。结论 肝硬化患者血小板高度活化,检测血小板CD62P、CD63、SCD62P对判断肝硬化的严重程度有一定参考价值。     

糖尿病患者血CD62p、高敏C反应蛋白及纤维蛋白原的表达及临床意义

目的研究糖尿病患者外周血CD62p与血清高敏C反应蛋白（hs-CRP）及纤维蛋白原（Fib）水平,探讨这些指标的临床意义。方法流式细胞技术测定65例糖尿病患者（DM组）外周血CD62p,乳胶增强免疫透射比浊法测定hs-CRP,Clauss法测定Fib,并与30例正常对照（NC组）比较。结果DM组血CD62p、hs-CRP及Fib水平均高于NC组（P〈0．01）;有血管病变组血CD62p、hs-CRP及Fib水平均高于无血管病变组（P〈0．05）。结论糖尿病患者血小板活化程度高,特别是有血管病变组血CD62p、hs-CRP及Fib水平明显高于无血管病变组,提示血小板过度活化与血管病变、炎症反应相关,共同参与血栓形成;炎症反应加重血管病变。     

2型糖尿病患者糖皮质激素变化的临床研究

目的　探讨 2型糖尿病患者糖皮质激素分泌变化的规律及其临床意义。方法　测定 2 2名健康人 (对照组 )和 6 3例 2型糖尿病患者 (其中 39例 2型糖尿病无微血管病变、2 4例 2型糖尿病并微血管病变 )的血皮质醇 (F) ( 8Am、4Pm )、2 4h尿游离皮质醇 (UFC)及血糖 (FBG、2hPG)、HbA1c、TC和TG。结果　 2型糖尿病组的血F( 8Am、4Pm)及 2 4hUFC与对照组比较 ,差异有显著性 (P <0 .0 5 )。糖尿病有微血管病变组的 2 4hUFC的排量高于无微血管病变组 (P <0 .0 5 )。糖尿病组 2 4hUFC与HbA1c呈正相关 (r =0 .2 76 ,P <0 .0 5 ) ,与病程呈正相关 (r =0 .72 4,P <0 .0 1) ,与 2 4h尿微量白蛋白 (UAP)呈正相关 (r =0 .486 ,P <0 .0 1) ,与TG呈正相关 (r= 0 .42 1,P <0 .0 1)。结论　 2型糖尿病患者糖皮质激素水平增高 ,加重了糖代谢和脂代谢紊乱 ,使糖尿病患者的病情恶化 ,最终促使糖尿病并发症的发生。     

Enhanced P-selectin expression and increased soluble CD40 Ligand in patients with Type 1 diabetes mellitus and microangiopathy: evidence for platelet hyperactivity and chronic inflammation

Aims/hypothesis Platelet activation, endothelial dysfunction and inflammation may be involved in early stages of diabetic microangiopathy. We therefore investigated patients with Type 1 diabetes mellitus, without (n=19) and with (n=20) microangiopathy, matched for glycaemic control and duration of disease, and matched with healthy control subjects (n=27).Methods Platelet activation was measured as platelet P-selectin expression using whole blood flow cytometry and as soluble P-selectin by immunoassay. Von Willebrand factor antigen in plasma, serum soluble E-selectin, CD40 ligand (sCD40L) and C-reactive protein (CRP) served as markers for endothelial function and inflammation.Results Thrombin-induced platelet P-selectin expression was enhanced, and soluble P-selectin and sCD40L concentrations were increased in patients with microangiopathy compared with the control subjects (p<0.01 for both) and with patients without microangiopathy (p<0.05 for P-selectin expression and sP-selectin), whereas all three parameters were similar in patients without microangiopathy and in the control subjects. CRP and soluble E-selectin were increased in patients with microangiopathy, compared with the control subjects (p<0.01 and p<0.05), whereas von Willebrand factor did not differ between the groups.Conclusions/interpretation Microangiopathy in Type 1 diabetes is associated with platelet hyperactivity, endothelial dysfunction and low-grade inflammation, indicating an increased risk for cardiovascular disease.Abbreviations sP-selectin Soluble P-selectin - sCD40L soluble CD40 Ligand - CRP C-reactive protein