Effect of a Sugar Replacement on Blood Glucose Levels in Healthy Adults

NCT ID: NCT06714552

Last Updated: 2025-04-30

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

RECRUITING

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-01-17

Study Completion Date

2025-10-31

Brief Summary

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Diabetes and cardiovascular disease account for millions of deaths per year. One of the risk factors for both conditions is high blood sugar, particularly after eating (postprandial hyperglycaemia). Lowering blood sugar levels after a meal is expected to have a positive effect on preventing metabolic and cardiovascular diseases and improving the metabolic control of those who already suffer from these conditions.

The aim of this study is to investigate the effect of Oligomate® (beta-galacto-oligosaccharide) on postprandial glycaemia when used as a partial replacement of glycaemic carbohydrates in a beverage in otherwise healthy volunteers. Volunteers will be given water with either Oligomate® or glucose (control) added. Blood samples will be collected at eight time points (two before drinking the beverage and six after) to measure glucose and insulin levels.

Detailed Description

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A single-centre, single-blind, randomised, controlled, cross-over, acute feeding trial will be conducted. The recruitment and study visits will be carried out at the Human Intervention Studies Unit (HISU) of the Rowett Institute.

A recruitment visit will be scheduled to screen for eligibility. During the visit, informed consent will be obtained before volunteers complete a health questionnaire, have their height and weight measured, and their veins checked to assess suitability for blood sample collection. A finger prick blood sample will then be taken to measure HbA1c levels. If a volunteer is eligible, the first study visit will be scheduled and they will be asked to fast for 12 hours the night before. A frozen high carbohydrate vegetarian ready-meal will be provided, which they will consume at home the evening before the study visit and before the fasting period.

During the study visits, the postprandial glycaemic response will be measured immediately after consumption of the supplement or control on two occasions separated by a wash-out period of 7-14 days. Briefly, subjects will arrive in the morning after having consumed the high carbohydrate meal the night before, followed by a 12 hr overnight fast. After recording body weight, a cannula will be inserted into an antecubital vein of one arm by a trained cannulist to allow repeated blood sampling during the assessment (approx. 6 ml collected per sample time to a total of 48 ml per visit). After obtaining two initial fasting blood samples (at -10min and -5min), subjects will consume the test beverage within 5 min. Further blood samples will be obtained at 15, 30, 45, 60, 90 and 120 min after ingestion to complete the postprandial glycaemic response assessment.

At the end of the first visit volunteers will receive the second ready-meal, identical to the first, which they will be asked to consume the evening before the second study visit, before the fasting period commences. During the second study visit, participants will consume the same beverage with the alternate supplement and complete the opposite arm of the postprandial glycaemic response assessment.

Conditions

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Postprandial Hyperglycemia Hyperinsulinemia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Participants
Statistician

Study Groups

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Beta-galacto-oligosaccharide

Group Type EXPERIMENTAL

Galacto-Oligosaccharide

Intervention Type DIETARY_SUPPLEMENT

24.0 g Oligomate® in 100 mL water

Glucose

Control

Group Type OTHER

Glucose

Intervention Type OTHER

17.8 g glucose in 100 mL water

Interventions

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Galacto-Oligosaccharide

24.0 g Oligomate® in 100 mL water

Intervention Type DIETARY_SUPPLEMENT

Glucose

17.8 g glucose in 100 mL water

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Healthy Men or Women
* Body Mass Index (BMI) 18.5-29.9 kg/m\^2
* Between 18 and 65 years of age
* Compliant (i.e., understands and is willing, able, and likely to comply with the experimental procedure and safety guidelines)
* Able to provide informed consent
* Premenopausal women must have a regular cycle or be on hormonal contraception.

Exclusion Criteria

* Diabetes mellitus (all types including gestational diabetes)
* HbA1c result over the study limit \[healthy range of between 4% and 5.9%\]
* Endocrine disease (e.g., Cushing's syndrome)
* Any food allergy or intolerance, or following Vegan diet
* Medications that increase blood glucose (e.g., steroids, protease inhibitors, antipsychotics, antihypertensives, statins, diuretics, nicotinic acid, etc.)
* Medications that lower glycemia (e.g., anti-hyperglycaemics, insulin, beta- blockers, etc.)
* Medication affecting glucose regulation, appetite, and/or digestion/absorption of nutrients, antibiotics
* Major medical or surgical event requiring hospitalization in the previous 3 months
* Pregnant or lactating
* Participation in another clinical/supplementation trial or actively trying to reduce body weight
* Unable to comply with experimental procedures and safety guidelines
* Unable to give consent
* Smokers
* Travel during the study period
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Yakult Honsha Co., LTD

INDUSTRY

Sponsor Role collaborator

University of Aberdeen

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Karen Scott, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Aberdeen

Locations

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University of Aberdeen, Rowett Institute

Aberdeen, , United Kingdom

Site Status RECRUITING

Countries

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United Kingdom

Central Contacts

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Karen Scott, PhD

Role: CONTACT

+44 (0)1224 438730

Galiana Lo, PhD

Role: CONTACT

+44 (0)1224 438771

References

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Venn BJ, Green TJ. Glycemic index and glycemic load: measurement issues and their effect on diet-disease relationships. Eur J Clin Nutr. 2007 Dec;61 Suppl 1:S122-31. doi: 10.1038/sj.ejcn.1602942.

Reference Type BACKGROUND
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Bonora E. Postprandial peaks as a risk factor for cardiovascular disease: epidemiological perspectives. Int J Clin Pract Suppl. 2002 Jul;(129):5-11.

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Levitan EB, Song Y, Ford ES, Liu S. Is nondiabetic hyperglycemia a risk factor for cardiovascular disease? A meta-analysis of prospective studies. Arch Intern Med. 2004 Oct 25;164(19):2147-55. doi: 10.1001/archinte.164.19.2147.

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Lin PJ, Borer KT. Third Exposure to a Reduced Carbohydrate Meal Lowers Evening Postprandial Insulin and GIP Responses and HOMA-IR Estimate of Insulin Resistance. PLoS One. 2016 Oct 31;11(10):e0165378. doi: 10.1371/journal.pone.0165378. eCollection 2016.

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Jenkins DJ, Goff DV, Leeds AR, Alberti KG, Wolever TM, Gassull MA, Hockaday TD. Unabsorbable carbohydrates and diabetes: Decreased post-prandial hyperglycaemia. Lancet. 1976 Jul 24;2(7978):172-4. doi: 10.1016/s0140-6736(76)92346-1.

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Related Links

Access external resources that provide additional context or updates about the study.

https://www.who.int/data/gho/indicator-metadata-registry/imr-details/2380

Indicator Metadata Registry List: Mean fasting blood glucose

https://www.efsa.europa.eu/en/efsajournal/pub/1462

Scientific Opinion on Dietary Reference Values for carbohydrates and dietary fibre

https://www.efsa.europa.eu/en/efsajournal/pub/3838

Scientific Opinion on the substantiation of a health claim related to AlphaGOS® and a reduction of post-prandial glycaemic responses pursuant to Article 13(5) of Regulation (EC) No 1924/2006

Other Identifiers

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SURE-BloG

Identifier Type: -

Identifier Source: org_study_id

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