Clinical trial NCT03090347: Effects of Dietary Nutrients on Liver and Adipose Tissue Metabolism
Official title: The Effect of Short-term Overconsumption of Specific Dietary Nutrients on Liver and Adipose Tissue Metabolism
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: NAFLD
Nutrient; Excess
Lead sponsor: University of Oxford
Sponsor class: OTHER
First posted: 2017-03-24
Enrollment: 100
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: BASIC_SCIENCE

Brief summary: In health,adipose tissue stores fat from the diet. If the fat tissue stops storing dietary fat then this increases the chance of it being stored in the liver, which is related to increased risk of heart disease and type 2 diabetes. It has been suggested that having a diet high in sugars or certain fats, may cause the fat tissue and liver to change how they function; we would like to investigate this in detail.

Detailed description: This research aims to investigate how the overconsumption of specific macronutrients may effect adipose tissue and liver metabolism and function. Liver and heart fat content and adipose tissue and liver metabolism fasting and postprandial lipid metabolism will be assessed before and after the specific dietary intervention.

Eligibility criteria: Inclusion Criteria:

* Participant is willing and able to give informed consent for participation in the study.
* Male or Female, aged ≥18 or ≤65 years.
* Body Mass Index ≥19 ≤35 kg/m2
* No medical condition or relevant drug therapy known to affect liver or adipose tissue metabolism.
* Weight stable for the previous 3 months

Exclusion Criteria:

* Patient is unwilling or unable to give informed consent for participation in the study
* A blood haemoglobin \<135mg/dL for men and \<120mg/dL for women
* Donated (or lost) ≥250 ml of blood in the previous two months.
* On a weight loss diet or have decreased their body weight by \>5% in the previous 3 months.
* Have increased their body weight by \>5% in the previous 3 months.
* Any metabolic condition or relevant drug therapy
* Current smoker
* History of alcoholism or a greater than recommended alcohol intake (\>30 g of alcohol daily for men and \>20 g of alcohol daily for women)
* Haemorrhagic disorders
* Anticoagulant treatment
* History of albumin allergy
* Pregnant or nursing mothers
* Women who are taking 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, or are unwilling to remove any piercings
* History of an eating disorder or any other psychological condition that may affect the participants ability to adhere to study intervention/experimental diets.

Primary outcomes:
measure: Liver de novo lipogenesis
timeFrame: Within 21 days after starting the intervention diet
Secondary outcomes:
measure: Adipose tissue metabolism
timeFrame: Within 21 days after starting the intervention diet
measure: Liver fat accumulation
timeFrame: Within 21 days after starting the intervention diet
Other outcomes:
Locations:
city: Oxford
country: United Kingdom
facility: Oxford Centre for Diabetes, Endocrinology and Metabolism
Study officials:
References: