Long-term Metabolic Effects of Cafestol

NCT ID: NCT05672433

Last Updated: 2023-01-05

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

UNKNOWN

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-06-28

Study Completion Date

2023-03-01

Brief Summary

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Twelve-week double-blinded, placebo-controlled, parallel intervention study on 40 participants with a large waist circumference who will ingest cafestol or placebo capsules twice daily. Insulin resistance is measured before and after the twelve-week intervention.

Detailed Description

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Participants are randomly allocated to the cafestol intervention group or placebo group. Before and after the twelve-week intervention the participants partake in:

* A modified two-stage Insulin Suppression Test to determine insulin mediated glucose uptake. Fasting participants receive body-surface-area-adjusted octreotide, insulin and glucose infusions for 240 minutes. Octreotide is infused with the same rate throughout the test. Insulin and glucose infusions are slow for the initial 120-minute stage and increased the final 120-minute stage, simulating fasting and post-postprandial conditions, respectively. Steady state measurements of plasma glucose are acquired the final 30 minutes of each stage, at time points 100, 110, 120, 220, 230 and 240 minutes.
* A mixed meal test. Fasting participants consume 75 g. white bread, 10 g. butter, 30 g. cheese and 200 ml. orange juice. Blood samples are drawn at time points -15, 0, 15, 30, 60, 90, 120, 180 and 240 min for glucose-, insulin-, glucagon- and triglyceride measurements.
* A Magnetic Resonance Imaging (MRI) scan. Participants undergo dixon-sequences scanning the abdomen, assessing visceral and sub-cutaneous fat volume and liver fat content. Magnetic Resonance (MR) spectroscopy is also used to determine fat percentage of the liver.
* 24-hour ambulatory blood pressure measurement, every 20 minutes during daytime and every 30 minutes during nighttime.
* 1-week continuous glucose measurement using blinded continuous glucose monitor/sensor on upper arm.
* Fecal and urine sampling
* 72-hour food-diary
* Fasting blood samples:

* Insulin, c-peptide, HbA1c and glucose
* Total cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL) and triglycerides
* Thyroid-stimulating hormone (TSH)
* Alanine aminotransferase, creatinine, sodium and potassium
* High sensitivity C reactive protein (CRP) and alpha-hydroxybutyrate
* C-terminal telopeptide (CTX) and Procollagen type 1 N-terminal propeptide (P1NP)
* Parathyroid hormone (PTH), Vitamin D and Ionized calcium
* Monocyte Chemoattractant Protein-1 (MCP-1)
* Interleukin 1 \& 8 (IL-1α, IL-1β, IL-8)
* Gastric inhibitory polypeptide (GIP), Glucagon-like peptide-1 (GLP-1) and Glucagon- like peptide-2 (GLP-2)
* Growth/differentiation factor 15 (GDF-15)
* Tumor necrosis factor (TNFα)
* Fasting assessment of insulin resistance (Homeostatic Model Assessment for Insulin Resistance by C-peptide).

Pre-intervention and end-intervention test results will be compared using repeated-measures ANOVA / mixed models.

Conditions

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Obesity, Abdominal

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Cafestol

Participants in this arm ingest 6 mg cafestol capsules twice daily with breakfast and dinner.

Group Type ACTIVE_COMPARATOR

Cafestol

Intervention Type DIETARY_SUPPLEMENT

Capsule with 6 mg cafestol twice daily

Placebo

Participants in this arm ingest placebo capsules twice daily with breakfast and dinner.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DIETARY_SUPPLEMENT

Capsule without cafestol twice daily

Interventions

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Placebo

Capsule without cafestol twice daily

Intervention Type DIETARY_SUPPLEMENT

Cafestol

Capsule with 6 mg cafestol twice daily

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

Waist circumference \> 102 cm (men) / 88 cm (women)

Exclusion Criteria

* Type 2 diabetes (HbA1c \> 48 mmol/mol) or in treatment with antidiabetic drugs
* Pregnancy
* Planned pregnancy
* Breastfeeding
* Significant comorbidity expected to unable the subject from completing visits
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Aarhus University Hospital

OTHER

Sponsor Role collaborator

University of Aarhus

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Søren Gregersen, M.D. Ph.D

Role: PRINCIPAL_INVESTIGATOR

Aarhus University Hospital

Locations

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Steno Diabetes Center Aarhus

Aarhus, Aarhus N, Denmark

Site Status

Countries

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Denmark

Other Identifiers

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cafestol.longterm

Identifier Type: -

Identifier Source: org_study_id

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