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The Effect of a High-fat vs. High-sugar Diet on Liver Fat Accumulation and Metabolism

2020年3月26日 更新者：University of Oxford

The Effect of a High Fat Compared to a High Sugar Diet on Liver Fat Accumulation and Metabolism

Non-alcoholic fatty liver disease (NAFLD) is the most prevalent liver disease in the world. It is currently unclear why fat starts to accumulate in the liver, although both the amount and type of food consumed have been implicated. The majority of studies that have investigated the effects of dietary fat or sugar on liver fat have fed volunteers excess calories, which are known to increase liver fat. The effect of specific dietary components, when consumed as part of a diet not containing excess calories, on liver fat accumulation remains unclear.

研究概览

地位

完全的

条件

干预/治疗

详细说明

This research aims to investigate the role excessive consumption of specific macronutrients may play in the development of NAFLD. This will be achieved by subjecting participants to two specific dietary interventions (high-fat, low-carbohydrate and low-fat, high-carbohydrate) in a randomized, crossover research design. Liver fat content, and whole-body and hepatic fasting and postprandial lipid metabolism will be assessed before and after the specific dietary interventions.

研究类型

介入性

注册 (实际的)

16

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

  • 英国
      • Oxford、英国、OX3 7LE
        • Oxford Centre for Diabetes, Endocrinology and Metabolism

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

30年 至 65年 (成人、年长者)

接受健康志愿者

是的

有资格学习的性别

全部

描述

Inclusion Criteria:

  • Participant is willing and able to give informed consent for participation in the study.
  • BMI >25 <35kg/m2
  • No medical condition or relevant drug therapy known to affect liver, lipid or glucose metabolism

Exclusion Criteria:

  • Age <30 or >65 years
  • Body mass index <25 or >35kg/m2
  • A blood haemoglobin <120mg/dL
  • Any metabolic condition or relevant drug therapy
  • People who do not tolerate fructose
  • Smoking
  • History of alcoholism or a greater than recommended alcohol intake
  • Pregnant or nursing mothers
  • Women prescribed any contraceptive agent or device including oral contraceptives, hormone replacement therapy (HRT) or who have used these within the last 12 months
  • History of severe claustrophobia
  • Presence of metallic implants, pacemaker
  • Haemorrhagic disorders
  • Anticoagulant treatment

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：基础科学
  • 分配：随机化
  • 介入模型：交叉作业
  • 屏蔽：单身的

武器和干预

参与者组/臂
干预/治疗
有源比较器：High-fat, low-carbohydrate diet
Dietary intervention: Participants will consume a diet that is rich in saturated fat (20% total energy) and low in free sugars for 4 weeks. This diet will include commonly eaten foods such as butter, cheese, and fatty meat products. Total fat intake in this intervention will be 40-45% total energy.
其他：High-fat, low-carbohydrate
Dietary intervention: 4 week
有源比较器：Low-fat, high-carbohydrate diet
Dietary intervention: Participants will consume a diet that is low in saturated fat (~5% total energy) and rich in free sugars (20% total energy).The diet will include commonly eaten food and drink such as sugar sweetened beverages, confectionery (e.g. fruit gums) and table sugar.
其他：Low-fat, high-carbohydrate
Dietary intervention: 4 week

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
Change in liver fat content
大体时间：Before, and within 7 days after completion of each dietary intervention
Investigators will measure the change in liver fat content after each of the 4 week intervention diets by magnetic resonance imaging/spectroscopy (MRI/S).
Before, and within 7 days after completion of each dietary intervention

次要结果测量

结果测量
措施说明
大体时间
Change in hepatic fatty acid partitioning
大体时间：Within 7 days after completion of each dietary intervention
Investigators will utilise stable isotope tracer methodology to measure the contribution of newly synthesised fatty acids and dietary fatty acids to triglyceride production and oxidation pathways in the liver after each of the 4 week intervention diets.
Within 7 days after completion of each dietary intervention
Change in plasma metabolite concentrations
大体时间：Before, and within 7 days after completion of each dietary intervention.
Circulating concentrations of glucose, insulin, non-esterified fatty acids, and triglycerides will be measured biochemically using a clinical analyser after each of the 4 week intervention diets.
Before, and within 7 days after completion of each dietary intervention.
Change in whole-body fatty acid oxidation
大体时间：Within 7 days after completion of each dietary intervention
Investigators will utilise stable isotope tracer methodology to measure whole-body dietary fatty acid oxidation after each of the 4 week intervention diets.
Within 7 days after completion of each dietary intervention

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。

赞助

University of Oxford

调查人员

  • 首席研究员：Leanne Hodson, PhD、University of Oxford

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 (实际的)

2016年12月1日

初级完成 (实际的)

2019年12月1日

研究完成 (实际的)

2020年3月1日

研究注册日期

首次提交

2017年1月9日

首先提交符合 QC 标准的

2017年5月4日

首次发布 (实际的)

2017年5月9日

研究记录更新

最后更新发布 (实际的)

2020年3月27日

上次提交的符合 QC 标准的更新

2020年3月26日

最后验证

2018年5月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • Oxlip-2017-HFD/HSD

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

是的

IPD 计划说明

Following completion of the study, all individual data obtained from participants may potentially be shared with other researchers, both here in the United Kingdom and abroad, in appropriate circumstances. If data is to be shared with other researchers, it will be done so under fully anonymised conditions.

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.

非酒精性脂肪肝的临床试验

High-fat, low-carbohydrate的临床试验

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赞助者和合作者

医疗条件

药物干预

CROs by country

CROs in Moldova

条件

罕见疾病

药物干预

膳食补充剂

赞助者/合作者

地点

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