Salmon Peptide Fraction: Safety and Cardiometabolic Health

NCT ID: NCT05025462

Last Updated: 2025-03-18

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

53 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-11-01

Study Completion Date

2023-07-26

Brief Summary

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The overall goal of this study is to verify the safety of 15g of salmon peptide fraction (SPF), and to test the effects on metabolic syndrome risk factors of two doses of SPF (7.5g and 15g) in overweight-obese men and women. Transcriptomic, metabolomic and metagenomic approaches will be used to study the physiological effects of SPF and to discover the potential mechanism underlying these effects.

Detailed Description

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Increased fish consumption has been suggested to improve the metabolic syndrome (MetS) and to reduce the incidence of type 2 diabetes (T2D) and cardiovascular disease (CVD) in obese subjects. While it is well documented that marine long chain polyunsaturated fatty acids (n-3 PUFA) decrease CVD risk by improving the plasma lipid profile and reducing inflammation, the beneficial effects of n-3 PUFA on glucose homeostasis and insulin sensitivity in humans remains highly controversial. Animal and human studies carried out by the group of investigators over the past 20 years have shown that fish proteins can improve the plasma lipid profile, enhance insulin sensitivity and reduce obesity-linked inflammation. The investigators also reported that a salmon protein hydrolysate reduces body fat and increases insulin sensitivity via its calcitonin content and they observed that protein hydrolysates from salmon and other fish sources reduced inflammation in visceral adipose tissue in rodents. The investigators therefore decided a few years ago to focus on the identification of bioactive peptides from fish proteins to explore the potential of increasing the efficacy of fish muscle protein hydrolysates to prevent/treat the MetS. The investigators hypothesized that it was the peptides produced from gastrointestinal digestion that were responsible for the remarkable bioactive effects of fish proteins on the MetS. The investigators have also confirmed that a small peptides fraction (SPF) from salmon protein markedly reduces the development of T2D and inflammation in a high-fat diet (HFD)-induced, obese, atherosclerosis-prone mouse LDLr knockout (KO). These findings are very promising and suggest that fish protein-derived peptides or amino acids may also explain the beneficial effects of dietary fish intake on the MetS, T2D and CVD. Additional studies are required to validate these observations, delineate the mechanisms, and assess their direct impact in human clinical trials.

Subjects will take an oral dose of 15 g of SPF or comparator per day (powder mixed with water) in the first intervention phase (6 weeks), then 7.5 g of SPF or comparator per day (powder mixed with water) in the second intervention phase (6 weeks).

Conditions

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Metabolic Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
double blind

Study Groups

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SPF

Salmon peptide fraction supplement: powder mixed in water

Group Type EXPERIMENTAL

Supplement dose 15g/d

Intervention Type DIETARY_SUPPLEMENT

Supplementation with 15g/day of SPF or Comparator

Supplement dose 7.5g/d

Intervention Type DIETARY_SUPPLEMENT

Supplementation with 7.5g/d of SPF ou comparator

Comparator

Casein peptide fraction supplement: powder mixed in water

Group Type ACTIVE_COMPARATOR

Supplement dose 15g/d

Intervention Type DIETARY_SUPPLEMENT

Supplementation with 15g/day of SPF or Comparator

Supplement dose 7.5g/d

Intervention Type DIETARY_SUPPLEMENT

Supplementation with 7.5g/d of SPF ou comparator

Interventions

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Supplement dose 15g/d

Supplementation with 15g/day of SPF or Comparator

Intervention Type DIETARY_SUPPLEMENT

Supplement dose 7.5g/d

Supplementation with 7.5g/d of SPF ou comparator

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* BMI between 25 and 35 kg/m2
* Waist circumference ≥ 94 cm for men and ≥ 80 cm for women
* Meet at least one of the following criteria:

Plasma TG \> 1.35 mmol/L Fasting glycemia ≥ 5,6 mmol/L and ≤ 6,9 mmol/L HbA1c ≥ 5,7% and ≤ 6.4% Insulin concentration \> 42 pmol/L

Exclusion Criteria

* Smoker
* Suffering from any metabolic disorder requiring pharmacological treatment
* Taking any medications or natural health products affecting glucose metabolism or plasma lipid levels
* Use of protein supplements, probiotics supplements or antibiotics within the last 3 months
* Taste aversion for fish/seafood
* Fish-seafood or casein/milk protein or any non-medicinal ingredients allergy
* Lactose intolerance
* Regular alcohol consumption (\>2 drinks/d)
* \>5% weight loss over the last 3 months
* Major surgery within the last 3 months
* Pregnant and breastfeeding women
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Laval University

OTHER

Sponsor Role lead

Responsible Party

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André Marette

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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INAF, Université Laval

Québec, Quebec, Canada

Site Status

Countries

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Canada

Other Identifiers

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SPF1 2021-157

Identifier Type: -

Identifier Source: org_study_id

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