Nicotinic Acid Composition of HDL and Arterial Endothelium Function in Premature Coronary Heart Disease and High HDL (11MSP011)
Efecto Del ácido nicotínico Sobre la composición de Las lipoproteínas de Alta Densidad (HDL) y la función Del Endotelio Arterial en Los Pacientes Con cardiopatía isquémica Prematura y Concentraciones Elevadas de Colesterol-HDL
Patients with premature ischemic heart disease (PIHD) and elevated levels of HDL-C present an altered composition of high-density lipoproteins (HDL) which is associated with a loss of their anti-atherogenic effects and of their arterial endothelium function.
Objectives: To analyse if the treatment with nicotinic acid (NA)/Laropiprant can correct the alterations of the HDL composition and endothelial function in patients with PIHD and elevated HDL-C.
Methods: A total of 46 subjects with PIHD who are stable in the 3 months prior to the Study, who continue in treatment with statins and have elevated concentrations of HDL-C (HDL-C ≥2.0mmol/L in females and ≥1.8mmol/L in males) and an LDL-C <100mg/dL. This is a double-blind, randomised Study; after 6 weeks of lifestyle stabilisation, the subjects will be treated with NA or placebo for 16 weeks. At the start and end of treatment, HDL composition will be studied through density gradient preparative ultracentrifuge separation and FBLC (fast protein liquid chromatography) and through the changes in vasodilation induced by the endothelium through ultrasound. Primary endpoint: change in the apoA1 content associated to treatment. Secondary endpoints: variations in the change of the brachial artery diameter with reactive hyperaemia and changes in the content of other lipid and protein components of HDL including apoA2, paraoxonase, amyloid A and LCAT. The changes in HDL composition and endothelial function will be assessed with an analysis of variance with repeated measurements and a 2x2 design.
研究概览
研究类型
注册 (实际的)
阶段
- 第四阶段
联系人和位置
学习地点
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Barcelona
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L'Hospitalet de Llobregat、Barcelona、西班牙、08907
- Unitat Funcional de Risc Vascular. Servei Medicina Interna. Hospital Universitari de Bellvitge.
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Being male or female
- Age > 25 years
- Have an episode of ischemic heart disease before 55 years in men and in women 65 years
- Serum HDL-C above the 90th percentile of the Spanish population: >=2.0mmol/L in women and >=1.8mmol/L in men (Gomez-Gerique JA, et al. Med Clin (Barc.). 1999, 113: 730-735.)
- Stable treatment with any statin in the past 6 weeks: simvastatin, atorvastatin, rosuvastatin, pravastatin or lovastatin.
Exclusion Criteria:
- Uncontrolled hypercholesterolemia or hypertriglyceridemia, LDL-C >2.6mmol/L or triglycerides >2.24mmol/L
- Patients with an episode of ischemic heart disease in the last 3 months
- Patients suffering from acute or chronic inflammatory diseases in the last 3 months
- Treatment with fibrates or omega-3 fatty acids.
- Treatment with steroids or immunosuppressive drugs
- Patients with a contraindication to Tredaptive (Hypersensitivity to the active substances or any of the excipients, significant or unexplained hepatic dysfunction, active peptic ulcer, arterial bleeding).
- Patients treated with drugs that may interact with Tredaptive (Midazolam).
学习计划
研究是如何设计的?
设计细节
- 分配:随机化
- 介入模型:并行分配
- 屏蔽:四人间
武器和干预
参与者组/臂 |
干预/治疗 |
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安慰剂比较:安慰剂
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Placebo treatment will last for 12 weeks.
其他名称:
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有源比较器:Nicotinic Acid
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Nicotinic acid / laropiprant (Tredaptive 1000 mg/20 mg modified-release tablets).
Patients treated with nicotinic acid 1g/day receive one dose of one month and 2 g / day thereafter.
Nicotinic acid treatment will last for 12 weeks.
其他名称:
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
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Apo A1 of HDL
大体时间:Baseline; 12 weeks
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The amount of Apo A1 as a marker of HDL composition.
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Baseline; 12 weeks
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合作者和调查者
调查人员
- 首席研究员:Xavier Pintó, PhD、Hospital Universitari de Bellvitge
研究记录日期
研究主要日期
学习开始
初级完成 (预期的)
研究完成 (预期的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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Nicotinic acid的临床试验
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University College, LondonImperial College London; Cancer Research UK; National Cancer Imaging Translational Accelerator招聘中
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University of Colorado, DenverNational Heart, Lung, and Blood Institute (NHLBI); National Institutes of Health (NIH)招聘中
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Gladwin, Mark, MDNational Heart, Lung, and Blood Institute (NHLBI); Complexa, Inc.终止
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Critical Outcome Technologies Inc.M.D. Anderson Cancer Center; Northwestern Memorial Hospital未知宫颈癌 | 头颈癌 | 大肠癌 | 胰腺癌 | 卵巢癌 | 输卵管癌 | 肺癌 | 子宫内膜癌 | 腹膜癌 | HNSCC美国