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Effects of Lipoic Acid and Eicosapentaenoic Acid (EPA) in Human Obesity (OBEPALIP)

Cellular and Molecular Effects of Lipoic Acid and Eicosapentaenoic Acid (EPA) on Adipose Tissue: Potential Application in Human Obesity

The aim of the study is to analyze the effects of Lipoic acid and/or EPA supplementation on weight loss, lipid profile, insulin resistance, oxidative and inflammation parameters, metabolomic profile as well as on adipose tissue gene profile in healthy overweight/obese subjects following an energy-restricted diet.

研究概览

研究类型

介入性

注册 (实际的)

103

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习地点

    • Navarra
      • Pamplona、Navarra、西班牙、31008
        • Department of Nutrition, Food Science, Physiology and Toxicology. University of Navarra

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

20年 至 45年 (成人)

接受健康志愿者

是的

有资格学习的性别

女性

描述

Inclusion Criteria:

  • Women
  • Ages between 20 and 45 years, and with regular menstrual cycles
  • Body Mass Index (BMI) between 27.5 and 39.9 kg/m2
  • Weight unchanged (± 3 kg) for the last 3 months
  • All subjects should have an overall physical and psychological condition that the investigator believes is in accordance with the overall aim of the study.

Exclusion Criteria:

  • Use of prescription medication
  • To suffer from any chronic metabolic or obesity related disease, hepatic or renal systemic disease: Hypertension, dislipidemia, type 1 or 2 diabetes, thyroid function disorders, cirrhosis, fatty liver, etc.
  • Food allergies or food intolerance expected to come up during the study
  • Special diets (Atkins, vegetarian, etc.) prior three months the start of the study.
  • Eating disorders
  • Surgically treated obesity
  • Pregnant or lactating women or planning to be pregnant in the next two months
  • Alcohol or drug abuse (based on clinical parameters)

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:治疗
  • 分配:随机化
  • 介入模型:并行分配
  • 屏蔽:三倍

武器和干预

参与者组/臂
干预/治疗
安慰剂比较:Control group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + placebos supplements
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
实验性的:EPA group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + EPA (1.3 g/day, 3 capsules of 433 mg/day) supplement (EPA Group).
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
实验性的:Lipoic acid group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + LA (300 mg/day, 3 capsules of 100 mg/day) supplement (LA Group)
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
实验性的:EPA+LA group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + EPA/LA (1.3 g /day and 300 mg/day respectively).
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).

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
Weight Loss
大体时间:Week 0 (baseline)
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 0 (baseline)
Weight Loss
大体时间:Week 2
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 2
Weight Loss
大体时间:Week 4
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 4
Weight Loss
大体时间:week 6
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
week 6
Weight Loss
大体时间:Week 8
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 8
Weight Loss
大体时间:Week 10 (end of treatment)
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 10 (end of treatment)
Body composition and Anthropometric parameters
大体时间:Week 0 (Baseline)
Changes in body composition will be analyzed by Dual X-ray Absorptiometry (DXA) and by bioimpedance, and hip and waist circumferences will be measured.
Week 0 (Baseline)
Body composition and anthropometric parameters
大体时间:Week 10 (end of treatment)
Changes in body composition will be analyzed by Dual X-ray Absorptiometry (DXA) and by bioimpedance, and hip and waist circumferences will be measured.
Week 10 (end of treatment)
Glucose metabolism parameters
大体时间:Week 0 (baseline)
Fasting serum glucose, Fasting serum insulin, Oral Glucose Tolerance Test, HOMA index
Week 0 (baseline)
Glucose metabolism parameters
大体时间:Week 10 (end of treatment)
Fasting serum glucose, Fasting serum insulin, Oral Glucose Tolerance Test, HOMA index
Week 10 (end of treatment)
Lipid metabolism biomarkers
大体时间:Week 0 (baseline)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 0 (baseline)
Lipid metabolism biomarkers
大体时间:Week 10 (end of treatment)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 10 (end of treatment)

次要结果测量

结果测量
措施说明
大体时间
Blood Pressure and Cardiovascular Risk biomarkers
大体时间:Baseline
Blood pressure, PAI-1 and VEGF will be measured.
Baseline
Blood Pressure and Cardiovascular Risk biomarkers
大体时间:Week 10 (end of treatment)
Blood pressure, PAI-1 and VEGF will be measured.
Week 10 (end of treatment)
Energy expenditure
大体时间:Baseline
Energy expenditure will be estimated by indirect calorimetry, and T3, T4 and TSH levels will be analysed by ELISA kits
Baseline
Energy expenditure
大体时间:Week 10 (end of treatment)
Energy expenditure will be estimated by indirect calorimetry, and T3, T4 and TSH levels will be analysed by ELISA kits
Week 10 (end of treatment)
Satiety
大体时间:Baseline
Satiety will be estimated by using a VAS questionnaire
Baseline
Satiety
大体时间:Week 10 (end of treatment)
Satiety will be estimated by using a VAS questionnaire
Week 10 (end of treatment)
Serum inflammation biomarkers
大体时间:Baseline
TNF-alpha, IL-6, C-reactive protein, serum A-amiloid, Leptin, Adiponectin, Visfatin
Baseline
Serum inflammation biomarkers
大体时间:Week 10 (end of treatment)
TNF-alpha, IL-6, C-reactive protein, serum A-amiloid, Leptin, Adiponectin, Visfatin
Week 10 (end of treatment)
Serum oxidative stress biomarkers
大体时间:Baseline
Total and Reduced Glutathione, Glutathione Peroxidase, MDA, Superoxide Dismutase-2 (Mn-SOD).
Baseline
Serum oxidative stress biomarkers
大体时间:Week 10 (end of treatment)
Total and Reduced Glutathione, Glutathione Peroxidase, MDA, Superoxide Dismutase-2 (Mn-SOD).
Week 10 (end of treatment)
Adipose tissue gene profile and function analysis
大体时间:Week 10 (end of treatment)
A biopsy (2 g) of subcutaneous abdominal periumbilical area adipose tissue will be obtained. In order to identify clusters/pathways of genes regulated by the supplementation of EPA and LA, microarray gene profiling will be performed in adipose tissue from the 4 groups after the nutritional intervention. If possible primary explant culture of adipose tissue biopsies will be also carried out.
Week 10 (end of treatment)
Metabolomic and lipidomic profile
大体时间:Baseline
Samples of plasma and 24-h urine will be analysed by Ultra Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS), and Nuclear Magnetic Resonance (NMR), and Bidimensional Gas Chromatography-Mass Spectrometry (BC-MS).
Baseline
Metabolomic and lipidomic profile
大体时间:Week 10 (end of treatment)
Samples of plasma and 24-h urine will be analysed by Ultra Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS), and Nuclear Magnetic Resonance (NMR), and Bidimensional Gas Chromatography-Mass Spectrometry (BC-MS).
Week 10 (end of treatment)

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

调查人员

  • 首席研究员:Maria J Moreno-Aliaga, PhD、University of Navarra
  • 研究主任:Alfredo Martínez, PhD、University of Navarra

出版物和有用的链接

负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。

一般刊物

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始

2010年1月1日

初级完成 (实际的)

2011年12月1日

研究完成 (实际的)

2012年12月1日

研究注册日期

首次提交

2010年5月21日

首先提交符合 QC 标准的

2010年6月4日

首次发布 (估计)

2010年6月7日

研究记录更新

最后更新发布 (估计)

2015年5月28日

上次提交的符合 QC 标准的更新

2015年5月27日

最后验证

2012年2月1日

更多信息

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.

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