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1.
高三酰甘油血症与肝脂酶启动子710T/C多态性的关系   总被引:3,自引:0,他引:3  
张蕾  倪培华  应雅韵  金磊  张洁 《检验医学》2006,21(3):210-214
目的探讨高三酰甘油(TG)血症与肝脂酶(HL)启动子710T/C基因多态性的关系。方法运用聚合酶链反应一限制性内切酶片段长度多态性(PCR—RFLP)技术对112名正常TG者和103例高TG者的HL启动子710T/C基因多态性进行研究。结果HL启动子710C等位基因频率在高TG血症组(42.86%)与正常TG组(49.51%)中差异无显著性(P〉0.05)。高TG组各基因型的各项血脂指标与正常TG组相同基因型的血脂指标比较,除低密度脂蛋白胆固醇(LDL—C)外差异均有显著性(P〈0.05)。高TG女性组TT型、TC型的各项血脂指标与正常TG组相同基因型的血脂指标比较,差异均有显著性(P〈0.05);在CC型中除总胆固醇(TC)、高密度脂蛋白胆固醇(HDL—C)外,其他血脂指标也与正常TG组相同基因型的血脂指标有差异(P〈0.05)。在正常TG男性组中可见CC型的HDL—C浓度有增高趋势且明显高于TT型(P〈0.05);在高TG男性组中,CC型的LDL—C浓度明显高于TT型和TC型,载脂蛋白A1(ApoAl)则明显降低(P〈0.05)。未发现C等位基因是高TG发生的独立危险因素。结论肝脂酶启动子710T/C多态性与高TG血症的发生相关,并可影响血浆脂类的代谢,但不是一独立的危险因素。  相似文献   

2.
背景:动脉粥样硬化性脑梗死与载脂蛋白E、B基因多态性的研究有所报道,然而结果不尽相同。载脂蛋白E、B基因多态性与青年人动脉粥样硬化性脑梗死的相关性研究国内未见报道。 目的:应用聚合酶链反应技术分析载脂蛋白E、B基因多态性对青年动脉粥样硬化性脑梗死发病的意义及其相关性。 设计:以青年动脉粥样硬化性脑梗死患者为研究对象,病例一对照分析。 单位:中国医科大学盛京医院神经内科。 对象:实验于1998-01/2000-12中国医科大学盛京医院完成。选取神经内科动脉粥样硬化性脑梗死患者36例作为脑梗死组,男30例,女6例,平均年龄(41.6&;#177;6.54)岁;对照组为100例体检健康的沈阳籍汉族青年,男66例,女34例,平均年龄(36.16&;#177;6.12)岁。方法:两组患者于空腹12h后抽取静脉血8mL,测定血清脂类及载脂蛋白。采用聚合酶链反应技术检测载脂蛋白E和载脂蛋白B的基因多态性;酶法测定血清总胆固醇、三酰甘油、高密度脂蛋白胆固醇含量;免疫比浊法测定血清载脂蛋白ALB浓度;酶联免疫法测定血清脂蛋白a的含量。 主要观察指标:①载脂蛋白E、B基因型频率在两组人群中的分布特征。②载脂蛋白E和载脂蛋白B基因多态性与血脂、脂蛋白和载脂蛋白的含量的关系。③载脂蛋白E、B基因型与青年人动脉粥样硬化性脑梗死发病中的关联强度。结果:①脑梗死组患者ε3/4型频率为36.1%,n2/4型频率为27.7%;对照组分别为12%和7%;梗死组84等位基因频率为0.320,明显高于对照组的0.095(P〈0.05)。②脑梗死组患者三酰甘油、总胆固醇、脂蛋白a含量明显高于对照组,高密度脂蛋白胆固醇含量显著低于对照组(P〈0.05-0.001)。③ε4等位基因使血清三酰甘油、总胆固醇、血清脂蛋白a含量增高、致高密度脂蛋白胆固醇含量降低的相对风险率依次为8.23,4.85,4.39,29.9(P〈0.01~0.001)。④载脂蛋白B基因Xba Ⅰ X^+X^-亚组的载脂蛋白AI含量为(1.01&;#177;0.30)g/L,明显低于X-X-亚组的(1.33&;#177;0.15)g/L(t=2.55,P〈0.05);X^+X^-亚组的血清脂蛋白a含量为244.3mg/L,与对照组的含量183.0mg/L相比,差异有显著性意义(t=4.50,P〈0.01)。⑤脑梗死组患者中83与X^+X^-同时存在者3例,与X^+X^-同时存在10例;ε4与X^+X^-同时存在者2例,与X^+X^-同时存在19例,84与X^+X^-并存时动脉粥样硬化性脑梗死发病风险率为2.85(r=1.52,P〉0.05)。 结论:载脂蛋白E等位基因84是青年人动脉粥样硬化性脑梗死的一种遗传易感性因子;Xba Ⅰ X^+X^-可能是另一种遗传标记;载脂蛋白E与载脂蛋白B基因型并存时与年青人动脉粥样硬化性脑梗死的关系需进一步研究。  相似文献   

3.
目的探讨脂蛋白脂酶基因Ser447stop多态性与脑梗死的关系。方法采用聚合酶链反应和限制性片段长度多态性方法,对63例脑梗死患者和62例正常对照组脂蛋白脂酶基因Ser447stop进行多态性分析。结果①正常对照组Ser447stop C等位基因含量为80.65%,G等位基因含量为19.35%;脑梗死组C等位基因含量为91.27%,G等位基因含量为8.73%;脑梗死患者组G等住基因含量较对照组少(P〈0.05);②与对照组相比,脑梗死患者组血清TG、LDL—C水平较对照组升高(P〈0.05);脑梗死患者组血清CHO,ApoAI,ApoB100水平较对照组降低(P〈0.05)。结论脂蛋白脂酶Ser447stop多态性与脑梗死发病有一定相关性,G等住基因是脑梗死的一个保护性因素。  相似文献   

4.
目的检测广东粤北地区瑶族人群载脂蛋白E(apoE)基因多态性并探讨其与血脂代谢的关系。方法采用聚合酶链反应-限制性片段长度多态性方法(PCR-RFLP)对750例23~80岁广东粤北地区瑶族人群进行apoE基因多态性检测,分析瑶族人群apoE基因频率分布特点,并比较分析不同apoE基因型与血脂水平的关系。结果共检测瑶族apoE6种基因型,以E3/3型最常见,占61.47%,其次E3/4型,占23.07%,E2/3、E2/4、E4/4、E2/24种基因型分别占11.87%、1.73%、1.07%、0.8%;apoE有3种等位基因,以ε3分布频率最高,为81.4%,其次是ε4,分布的频率为9.6%,ε2分布频率最低,为9.0%;男性和女性apoE基因型分布无差异;ε4等位基因携带者的TG、TC、LDL、apoB水平显著高于E2携带者和ε3携带者(P〈0.05)。结论apoE基因多态性影响广东粤北地区瑶族人群的血脂代谢,apoEε4等位基因携带者的TG、TC、TC、LDL、apoB水平较高,推测ε4等位基因可能是瑶族人群患高脂血症的危险因素之一。  相似文献   

5.
目的 ①建立一种简便、准确、实用的人栽脂蛋白E(apoE)基因型的检测方法;②研究冠心病(CHD)患者栽脂蛋白E基因多态性。方法 应用聚合酶链反应(PCR)特异性扩增apoE基因含编码112位和158位氨基酸的基因序列,用SS—SSCP技术进行apoE基因型分析。结果 运用SS—SSCP法检测了47名冠心痛患者apoE基因型,发现ε4/2、ε3/2、ε3/3、ε4/3、ε4/4基因频率分别为4.26%,14.89%,63.83%,12.76%,4.26%,并且发现ε2、ε3、ε4等位基因频率分别是9.57%,77.66%,12.77%。结论 ①该方法简单、快速、准确,对人体无害,适合于一般实验室开展;②ε4等位基因是CHD的易患因子之一,而ε3等位基因则具有保护作用。  相似文献   

6.
目的检测并分析保定市中老年人群中载脂蛋白E(apoE)基因多态性,探讨apoE基因多态性与脑梗死遗传易感性的关系。方法采用聚合酶链式反应-限制性片段长度多态性(PCR—RFLP)技术,分析92例脑梗死患者和86例健康对照者apoE的3种等位基因ε2、ε3、ε4,做基因频率和基因型多态性分析。结果健康人群组apoE基因呈多态性,有6种基因型,即3种纯合子(ε2/2、ε3/3、ε4/4)和3种杂合子(ε2/3、ε3/4、ε2/4)。健康人群组apoE3种等位基因的基因频率分别为:ε25.8%、ε387.2%、ε47.0%;apoE基因型频率数为ε2/20、ε3/375.5%、ε4/41.2%、ε2/310.5%、ε2/42.3%、ε3/410.5%。脑梗死组apoE等位基因频率:ε24.3%、ε369.6%、ε426.1%;基因型频数:ε2/23%、ε3/342.3%、ε4/410.8%、ε2/311.9%、ε2/42%、ε3/430%。与健康人群组比较,脑梗死组ε3/3基因型频率较健康组明显降低,差异有统计学意义(P〈0.05),ε4/4、ε3/4基因型频率较健康组明显升高,差异有统计学意义(P〈0.05),ε2/2、ε2/3、ε2/4基因型频率较健康组差异无统计学意义(P〉0.05)。与健康组比较,脑梗死组ε3等位基因频率明显降低,差异有统计学意义(P〈0.05),ε4等位基因频率明显升高,差异有统计学意义(P〈0.05),ε2等位基因频率较健康组差异无统计学意义(P〉0.05)。结论保定市健康人群组apoEe3基因出现率最高,ε2和ε4频率较低,以ε3/3基因型最多,而ε2/2、ε4/4相对较少,脑梗死患者中ε3/3、ε2/3基因型频率较低,ε3对脑梗死可能具有保护作用。ε4等位基因频率在脑梗死患者中增高,ε4可能是脑梗死的易感因素和风险因素。  相似文献   

7.
目的 观察冠心病(CHD)患者、脑梗死患者、2型糖尿病(DM)患者高密度脂蛋白(HDL)及其亚型的变化。方法 选择CHD患者202例(其中121例经冠脉造影)、脑梗死患者28例、2型DM患者31例,测定常规血脂{总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白(LDL)、载脂蛋白A-I(apoA-I)、载脂蛋白B100(apoB100)、脂蛋白(a)[Lp(a)]}、空腹血糖、餐后2h血糖、HDL2、HDL3及计算HDL2/HDL(%)。结果 CHD、脑梗死患者的HDL、HDL2、HDL2/HDL(%)显著下降,2型DM组HDL3有非常明显的增高。121例经冠状动脉造影的CHD患者其狭窄组较阴性组HDL2、HDL2/HDL(%)显著降低(P〈0.01)。80例血脂正常(TG〈2.2mmol/L,TC〈5.7mmol/L)的造影患者,TG随病变支数增加而递增(P〈0.05),HDL2则呈现递减式减少(P〈0.01)。常规血脂正常但糖耐量异常的CHD患者年龄明显偏大,同时有HDL3的下降。结论 CHD患者HDL降低主要表现为大颗粒的HDL2含量减少。  相似文献   

8.
新疆哈萨克族居民载脂蛋白E基因多态性与血脂的关系   总被引:1,自引:0,他引:1  
目的探讨新疆哈萨克族居民载脂蛋白E(apoE)基因多态性与血脂的关系。方法用聚合酶链反应-限制性片段长度多态性(PCR—RFLP)对100例新疆石河子地区哈萨克族高脂血症患者和91例健康对照者进行apoE基因分型,并对其血脂水平进行检测。结果高脂血症患者总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL—C)水平明显高于健康对照组(P〈0.01)。共检出5种基因型,两组各基因型、等住基因频率分布无差异(P〉0.05),均以野生型E3/3基因型和£3等位基因为主。ε2等位基因携带者的LDL—C水平在两组中与其他等位基因携带者相比均有统计学差异。结论apoE基因多态性对新疆石河子地区哈萨克族的血脂、载脂蛋白水平有影响,即ε2等位基因携带者的LDL—C、apoB水平较低,而84等位基因携带者的LDL—C、apoB水平较高。  相似文献   

9.
目的:探讨不同病程的糖尿病肾病(diabetic nephropathy,DN)患者血脂检测的价值。方法:测定95例糖尿病患者和50例健康体检者血甘油三脂(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)水平。结果:正常白蛋白组血脂各项与正常对照组比较差异无显著性(P〉0.05);微量白蛋白组TG、LDL—C明显高于正常对照组及正常白蛋白组(P〈0.05),血HDL—C明显低于正常对照组及正常白蛋白组(P〈0.05);大量自蛋白组TG、LDL—C明显高于正常对照组及正常白蛋白组(P〈0.01),血HDL—C明显低于正常对照组及正常白蛋白组(P〈0.01),血TC明显高于正常对照组及正常白蛋白组(P〈0.05),糖尿病肾病组血脂水平随糖尿病肾病程度加重而升高。结论:糖尿病肾病脂代谢紊乱程度明显高于非糖尿病肾病,且随病程迁延而加重。  相似文献   

10.
目的探讨补肾降脂方对高脂血症的治疗作用及机制。方法治疗组患者服用补肾降脂方,对照组患者服用洛伐他丁。检测各组治。疗前后患者血浆总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白(LDL)、高密度脂蛋白(HDL)作为观察指标。结果治疗后,治疗组患者血浆TC、TG、LDL水平明显降低(P〈0.05),而HDL水平明显升高(P〈0.05);对照组TC、TG、LDL水平明显降低(P〈0.05),HDL水平明显升高(P〈0.05)。结论补肾降脂方有明显的降血脂作用。  相似文献   

11.
This is a new method for the determination of creatine kinase isoenzyme MB activity in serum. The method uses direct activity measurement of creatine kinase B subunit activity after blocking of CK-M subunit activity by inhibiting antibodies. The test takes no longer than 15 min. The method yields an intra-serial C.V. of 2.0-12.9%, and a C.V. from day to day of 5.5%. The detection limit is 3.4 U/l creatine kinase MB. In the 95 cases with proven myocardial infarction several types of creatine kinase MB activity kinetics could be determined. The percentage of creatine kinase MB of peak CK-total is 6-25%, with a mean of 11.1%. The amount of creatine kinase MB with respect to total CK activity after reinfarction is higher than the amount after initial infarction.  相似文献   

12.
目的 探讨俯卧位通气对高海拔地区肺复张术(RM)治疗无效急性呼吸窘迫综合征(ARDS)患者的治疗作用.方法 从海拔2260m的地区医院筛选RM治疗无效的41例ARDS患者[平均氧合指数( PaO2/FiO2)较RM前升高<20%视为RM无效],依不同病因分为肺内源性ARDS组(ARDSp组)和肺外源性ARDS组(ARDSexp组),每组再按信封法随机分为俯卧位组和仰卧位组,即ARDSp俯卧位组(11例)、ARDSp仰卧位组(9例)、ARDSexp俯卧位组(10例)、ARDSexp仰卧位组(11例).在通气前及通气1、2、3、4h监测动脉血氧分压( PaO2)、PaO2/FiO2、静态顺应性(Cst)、气道阻力(Raw)的变化.结果 通气lh时,ARDSexp俯卧位组PaO2/FiO2( mm Hg,l mm Hg=0.133 kPa)即较通气前显著升高(157.4±40.6比129.3±48.7,P<0.05),并随通气时间延长呈持续增高趋势,4h达峰值(219.1 ±41.1);且ARDSexp俯卧位组通气3h内PaO2/FiO2较其他3组显著增高,另3组间则差异无统计学意义.ARDSp俯卧位组、ARDSexp俯卧位组通气4h时PaO2/FiO2均较相应仰卧位组显著增高(208.8±39.7比127.4±47.1,219.1±41.1比124.9±50.8,均P<0.05).4组通气前后Cst无显著改变,各组间差异也无统计学意义.ARDSp俯卧位组通气4h时Raw(cmH2O·L-1·s-1)较通气前显著降低(6.8±1.7比10.7±1.8,P<0.05),且明显低于其他3组;其他3组各时间点Raw组内及组间比较差异均无统计学意义.结论 俯卧位通气作为ARDS机械通气重要策略之一,可以改善RM无效高原ARDS患者的氧合,为抢救患者赢得宝贵的时间.  相似文献   

13.
The Department of Veterans Affairs (VA) in the USA operates a network of 172 medical centres which all utilize a hospital information system (HIS) which has been developed and is currently maintained by the VA. During the past several years, an image management and communication module has been developed, installed and clinically utilized at the Washington DC and Maryland VA Medical Centres. This image management and communication system, referred to as the decentralized hospital computer program (DHCP) imaging system, is fully integrated with a commercial picture archiving and communication system (PACS). The system is utilized to capture, archive, and display all images generated within the hospital including radiology, nuclear medicine, pathology, endoscopy, bronchoscopy, and dermatology, intraoperative photographs, ECG data, and a limited number of paper documents. The ultimate goal of the project is to have all patient text and image data available at any clinical workstation to any authorized user anywhere within the network of medical centres. Clinical requirements for an imaging workstation include ease of use, rapid and reliable access to the complete set of patient information, and images which are of acceptable quality to meet the requirements of the user and the subspecialty. Patient confidentiality and data security must be safeguarded at all times. Integration of the images with the remainder of the patient's database was found to be critical to the success of the project. The experience at the Washington and Maryland facilities suggests that an imaging system that is successfully integrated with a hospital information system can provide substantial clinical and economic benefits both within and among medical centres. Clinical acceptance and utilization of the system has been excellent, particularly in diagnostic radiology where DHCP Imaging has been interfaced to a commercial PAC system. Based upon this initial experience, the VA has begun to deploy the system throughout its large network of medical centres.  相似文献   

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15.
Myocardial elastography is a novel method for noninvasively assessing regional myocardial function, with the advantages of high spatial and temporal resolution and high signal-to-noise ratio (SNR). In this paper, in-vivo experiments were performed in anesthetized normal and infarcted mice (one day after left anterior descending coronary artery [LAD] ligation) using a high-resolution (30 MHz) ultrasound system (Vevo 770, VisualSonics Inc., Toronto, ON, Canada). Radiofrequency (RF) signals of the left ventricle (LV) in longitudinal (long-axis) view and the associated electrocardiogram (ECG) were simultaneously acquired. Using a retrospective ECG gating technique, 2-D full field-of-view RF frames were acquired at an extremely high frame rate (8 kHz) that resulted in high-quality incremental displacement and strain estimation of the myocardium. The incremental results were further accumulated to obtain the cumulative displacements and strains. Two-dimensional and M-mode displacement images and strain images (elastograms), as well as displacement and strain profiles as a function of time, were compared between normal and infarcted mice. Incremental results clearly depicted cardiac events including LV contraction, LV relaxation and isovolumetric phases in both normal and infarcted mice, and also evidently indicated reduced motion and deformation in the infarcted myocardium. The elastograms indicated that the infarcted regions underwent thinning during systole rather than thickening, as in the normal case. The cumulative elastograms were found to have higher elastographic SNR (SNR(e)) than the incremental elastograms (e.g., 10.6 vs. 4.7 in a normal myocardium, and 6.0 vs. 2.4 in an infarcted myocardium). Finally, preliminary statistical results from nine normal (m = 9) and seven infarcted (n = 7) mice indicated the capability of the cumulative strain in differentiating infracted from normal myocardia. In conclusion, myocardial elastography could provide regional strain information at simultaneously high temporal (>/=0.125 ms) and spatial ( approximately 55 microm) resolution as well as high precision ( approximately 0.05 microm displacement). This technique was thus capable of accurately characterizing normal myocardial function throughout an entire cardiac cycle, at the same high resolution, and detecting and localizing myocardial infarction in vivo.  相似文献   

16.
目的 探讨手转胎头术失败的原因与分娩结局.方法 选择2008年1月至2010年12月于我院住院分娩的持续性枕横位、枕后位产妇198例,根据行手转胎头术后结果分为成功组126例、失败组72例.比较两组分娩结局,对比分析失败原因.结果 失败组胎儿体质量≥3500 g的发生率[76.4%(55/72)]明显高于成功组[31.7%(40/126)],差异有统计学意义(x2=30.177,P=0.001)、失败组宫缩乏力发生率[58.3%(42/72)]高于成功组[38.1% (48/126)],差异有统计学意义(x2=7.569,P=0.006)、失败组骨盆临界或轻度狭窄发生率[38.9% (28/72)]高于成功组[23.8%(30/126)],差异有统计学意义(x2 =5.030,P=0.002)、失败组手转胎头时机不当(宫口开大<6 cm、胎头位于坐骨棘上及宫口开大8~10 cm、胎头位于坐骨棘下≥2 cm)发生率[61.1%(44/72)]高于成功组[38.9%(49/126)],差异有统计学意义(x2=9.084,P=0.003).失败组母儿并发症(产后出血、产褥病率、胎儿窘迫、新生儿窒息)发生率高于成功组(x2 =9.586,P=0.002、x2=9.334,P=0.002、x2=5.910,P=0.015、x2=5.240,P=0.022)、失败组剖宫产发生率[72.2%(52/72)]明显高于成功组[34.1 %(43/126),x2=26.641,P=0.001)].结论 手转胎头术能使难产变顺产,降低剖宫产率,减少母儿并发症,但须积极预防、处理导致手转胎头术失败的原因,对矫正失败后继续矫正及试产应慎重.  相似文献   

17.
18.
Morphine, the most widely used mu-opioid analgesic for acute and chronic pain, is the standard against which new analgesics are measured. A thorough understanding of the pharmacokinetics of morphine is required in order to safely and effectively use this analgesic in a wide variety of patients with different levels of organ function. A MEDLINE search was conducted to identify literature published between 1966 and January 2002 relevant to the pharmacokinetics of morphine. These publications were reviewed and the literature summarized regarding unique and clinically important elements of morphine disposition relative to its parenteral administration (including intravenous, intramuscular, subcutaneous, epidural and intrathecal administration), absorption profile (immediate release, controlled release, and sublingual/buccal, and rectal administration), distribution, and its metabolism/ excretion. Special populations, including infants, elderly, and those with renal/liver failure, have a unique morphine pharmacokinetic profile that must be taken into account in order to maximize analgesic efficacy and reduce the risk of adverse events.  相似文献   

19.
ABSTRACT

The Cochrane Library of Systematic Reviews is published quarterly. Issue 4 for 2009 contains 4027 complete reviews, 1906 protocols for reviews in production, and 11447 one-page summaries of systematic reviews published in the general medical literature. In addition, there are citations of 600,000 randomized controlled trials, and 12,200 cited papers in the Cochrane methodology register. The health technology assessment database contains over 7500 citations. This edition of the Library contains 90 new reviews, of which 19 have potential relevance for practitioners in pain and palliative medicine.  相似文献   

20.
ZusammenfassungFragestellung Es wurde geprüft, wie sich der Differenziertheitsgrad zweier Schmerzmessmethoden auf Angaben zur Ausgedehntheit klinischer Schmerzen auswirkt. Zugleich wurde der Referenzzeitraum variiert, über den die Patienten berichten sollten.Methode Erfasst wurde der Einfluss zu Lasten der Befragungsdifferenziertheit durch den Vergleich zweier Körperschema-Bildvorlagen. Drei Referenzzeiträume (Schmerz aktuell, letzte Woche, letztes halbes Jahr) wurden vorgegeben.Ergebnisse Patienten mit ausgedehnten Schmerzen gaben bei differenzierter Befragung um so mehr Schmerzen an, je weiter die Schmerzen zurück lagen und je größer der Berichtszeitraum war. Patienten mit gelenknahen Schmerzen gaben bei hoch differenzierter Befragung weniger ausgedehnte Schmerzen in der Vergangenheit an als bei globaler Einschätzung. Patienten mit Rückenschmerzen berichteten bei differenzierter Befragung zum aktuellen Schmerz über weniger ausgedehnte Schmerzen als bei globaler Befragung.Schlussfolgerung Die Angaben zur Schmerzausdehnung variieren vor allem bei Patienten mit ausgedehnten Schmerzen in Abhängigkeit von der Differenziertheit der Befragung. In diesen Fällen ist die Wahrscheinlichkeit erhöht, dass sich die Beschwerdesymptomatik zumindest teilweise erst in der Reaktion auf die situativen Befragungsbedingungen konstituiert und daher nicht auf andere Befragungsbedingungen generalisiert werden kann.  相似文献   

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