Low-calorie Sweeteners and Adipose Signaling

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-01-01

Study Completion Date

2018-12-31

Brief Summary

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The purpose of this study is to determine whether eight weeks of low-calorie sweetener (LCS) exposure exerts cardiovascular and/or metabolic effects among LCS-naïve overweight and obese adolescents and young adults. We will examine changes in gene expression in subcutaneous fat and will correlate these molecular changes with plasma biochemistry.

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Detailed Description

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The proposed study will investigate LCS-induced changes in metabolically "at-risk" young adults, under conditions that reflect typical beverage consumption. We will first identify molecular pathways potentially affected by LCS (adipose transcriptomics via global RNAseq) and then identify links between LCS-induced gene expression changes and circulating levels of key metabolic biomarkers and clinical outcomes. We will perform subcutaneous adipose biopsies before and after consumption of 12 ounces of diet soda three times daily for eight weeks. Within-subjects changes in adipose gene expression will be evaluated using RNAseq. We will then correlate transcriptomic changes with circulating levels of key inflammatory and metabolic biomarkers, to provide mechanistic insight into which pathways drive clinically-relevant LCS-induced metabolic impairments. We will measure glucose, insulin, inflammatory markers and adipose-derived hormones before and after eight weeks of LCS exposure.

Conditions

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Nutritional and Metabolic Diseases

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Diet Soda

Subjects will be asked to consume a diet soda three times daily for eight weeks.

Group Type EXPERIMENTAL

Diet Soda

Intervention Type OTHER

Subjects will be asked to consume diet soda three times daily for eight weeks.

Interventions

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Diet Soda

Subjects will be asked to consume diet soda three times daily for eight weeks.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

1. Female
2. 18-25 years of age
3. Overweight and mild to moderate obesity (25 ≤ body mass index (BMI) \<35 kg/m2)
4. Consumption of \<1 food/beverage with sucralose and/or acesulfame-potassium per month
5. Able and willing to comply with all study procedures for the duration of the study

Exclusion Criteria

1. Overt diabetes
2. Renal/gastrointestinal conditions
3. Pregnant/lactating
4. Recent significant weight change
5. Acute illness (w/fever)
6. Antibiotics in past 3 months
7. Use of illegal drugs/condition limiting ability to give consent.

Minimum Eligible Age

18 Years

Maximum Eligible Age

25 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes