The Effects of Strawberries on Blood Cholesterol.

NCT ID: NCT03441620

Last Updated: 2021-03-16

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

33 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-02-01

Study Completion Date

2021-01-31

Brief Summary

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In this study, we propose to investigate the effects of dietary achievable doses of strawberries on serum LDL-cholesterol (LDL-C) and related lipid profiles, measures of glycemia and insulin resistance, and biomarkers of inflammation in a 14 week controlled crossover study.

Detailed Description

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The screen visit will involve an 8 hour fasting state and the following procedures:

* Completing screening questionnaire
* Measuring height, weight, blood pressure, and waist size
* Drawing about 30mL blood for blood glucose and lipids and comprehensive metabolic panel All subjects will be asked to follow usual diet and lifestyle, and refrain from other sources of berries and related products while on the study. Subjects will also maintain 3-day food records at screen, 4, 9, and 14 weeks of the study. Height, weight, blood pressure and waist circumference will be measured by trained personnel at MPE 326 (KNS facility for clinical research). Blood draws will be performed by trained phlebotomists (to be hired) at MPE 326, and all procedures will be performed by trained research personnel \[PI \&Co-PI: Basu, Izuora and graduate student\]. In case of blood pressure, an average of at least three readings, 10 min apart, will be measured at each visit for each participant. Blood glucose (fasting and postprandial at two hours) will be determined at each time point. The oral glucose tolerance tests will be conducted at MPE 326 and blood samples will be sent to Quest Diagnostics, Las Vegas. Insulin resistance will be calculated using the homoeostatic model assessment (HOMA-IR). The HOMA-IR is a standard and widely used formula in calculating insulin resistance based on fasting glucose values. Screening and follow-up tests will include clinical laboratory tests for blood glucose, lipids, NMR profiles, C-reactive protein and metabolic panel to determine effects of the intervention.

Conditions

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Hyper-LDL-cholesterolemia Metabolic Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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Control

Calorie and fiber-matched control powder

Group Type PLACEBO_COMPARATOR

Control powder

Intervention Type OTHER

Control powder matched for fiber and strawberries

Strawberry one serving

Freeze-dried powder equivalent to one serving fresh strawberries per day.

Group Type EXPERIMENTAL

strawberries

Intervention Type DIETARY_SUPPLEMENT

Freeze-dried strawberry powder

Strawberry two-half servings

Freeze-dried powder equivalent to 2.5 serving fresh strawberries per day.

Group Type EXPERIMENTAL

strawberries

Intervention Type DIETARY_SUPPLEMENT

Freeze-dried strawberry powder

Interventions

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strawberries

Freeze-dried strawberry powder

Intervention Type DIETARY_SUPPLEMENT

Control powder

Control powder matched for fiber and strawberries

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* elevated total and LDL cholesterol (\>116 mg/dL)
* body mass index (\> or = 30 kg/m2)
* features of the metabolic syndrome

Exclusion Criteria

* taking glucose and lipid lowering medications (e.g. statins, metformin)
* history of chronic conditions (diabetes, CHD, anemia, renal diseases)
* allergic to strawberries
* pregnant and/or lactating
* smoking
* vegetarian or consuming special diet
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Oklahoma

OTHER

Sponsor Role collaborator

Oklahoma State University

OTHER

Sponsor Role collaborator

University of Nevada, Las Vegas

OTHER

Sponsor Role lead

Responsible Party

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Arpita Basu

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Arpita Basu, PHD

Role: PRINCIPAL_INVESTIGATOR

University of Nevada at Las Vegas

Locations

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University of Nevada at Las Vegas

Las Vegas, Nevada, United States

Site Status

University of Oklahoma Health Sciences Center, OCTSI

Oklahoma City, Oklahoma, United States

Site Status

Oklahoma State University

Stillwater, Oklahoma, United States

Site Status

Countries

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United States

Other Identifiers

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1119274

Identifier Type: -

Identifier Source: org_study_id

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