Slowly Digestible Carbohydrates for GLP-1 Secretion
The goal of this clinical trail is to learn if the hormone, glucagon-like peptide-1 (GLP-1), is stimulated by slowly digestible carbohydrates (SDCs) in healthy adults. In the current study, researchers will observe the amount of SDC that results in clinically meaningful levels of GLP-1, shown by an increase in feelings of fullness and a decrease in hunger, and how long an elevated level of GLP-1 lasts after starch consumption. Researchers aim to address two questions: What amount of SDC maximizes GLP-1-mediated satiety, and does the impact to satiety continue in a second meal? The overall goal is to maximize ileal-digesting SDC's potential use as a food-based agent for weight loss.
Researchers will compare 20, 40, and 60 g of raw corn starch compared to a maltodextrin control on total plasma GLP-1 concentrations, insulin, and blood glucose at baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of SDC. Researchers will also measure satiety at baseline, 60, 120, 180 minutes and after a second meal.
There will be a total of 4 study visits with a least a 7-day break between visits. At each study visit, participants will:
- Consume a randomized test beverage (SDC or maltodextrin)
- Receive a blood draw at 7 timepoints over 3 hrs
- Take a satiety questionnaire 5 times over 3 hrs
- Consume a standardized lunch 3 hrs after the test beverage consumption
調査の概要
状態
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前:Bruce R Hamaker, Ph.D.
- 電話番号:765-494-5668
- メール:hamakerb@purdue.edu
研究連絡先のバックアップ
- 名前:Erica de Jong, B.s.
- 電話番号:7654963802
- メール:dejonge@purdue.edu
研究場所
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Indiana
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West Lafayette、Indiana、アメリカ、47907
- 募集
- Clinical Research Center at Purdue University
-
コンタクト:
- Cheryl Armstrong, Ph.D.
- 電話番号:765-496-6275
- メール:armstroc@purdue.edu
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-
参加基準
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- Healthy population
- BMI between 18.5 and 24.9 kg/m2
- Adults 18 - 45 years old
- Men or women
- Able to read/speak English
- Fasting blood glucose levels ≤100 mg/dL
- HbA1c ≤ 5.7%
Exclusion Criteria:
- Participants with 18 > Years of Age > 45 will be excluded.
- Subjects with 18.5 kg/m² > BMI > 24.9 kg/m² will be excluded.
- Diabetic individuals will be excluded.
- Individuals with history of gastrointestinal disease will be excluded from the study.
- Pregnant or nursing women will also be excluded.
- Individuals taking GLP-1 medications, or on weight-loss diets or restrictive eating patterns.
- Individuals suffering from dairy or gluten intolerance or allergies will be excluded.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:基礎科学
- 割り当て:ランダム化
- 介入モデル:クロスオーバー割り当て
- マスキング:ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
プラセボコンパレーター:Maltodextrin
Maltodextrin increases GLP-1 from 0-60 minutes but doesn't have an extended or elevated plasma GLP-1 into 2-3 hrs post-consumption.
Participants will consume a treatment that is either entirely maltodextrin or partially maltodextrin during each of the 4 study visits.
|
75 g of maltodextrin diluted in 200 mL of water, taken once at a study visit
他の名前:
|
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実験的:Low-Dose SDC
20 g of raw corn starch (SDC) + 55g of maltodextrin = 75 g total Researchers hypothesize that raw corn starch will have an extended or elevated plasma GLP-1 into 2-3 hrs post-consumption.
Participants will consume the low-dose once during one of the study visits.
|
75 g of maltodextrin diluted in 200 mL of water, taken once at a study visit
他の名前:
Quantity of raw corn starch will vary between low, medium, and high-dose treatment arms (20, 40, 60 g respectively).
Each treatment will total 75 g using maltodextrin to account for mass difference (55, 35, 15 g respectively).
他の名前:
|
|
実験的:Medium-Dose SDC
40 g of raw corn starch (SDC) + 35g of maltodextrin = 75 g total Researchers hypothesize that raw corn starch will have an extended or elevated plasma GLP-1 into 2-3 hrs post-consumption.
Participants will consume the medium-dose once during one of the study visits.
|
75 g of maltodextrin diluted in 200 mL of water, taken once at a study visit
他の名前:
Quantity of raw corn starch will vary between low, medium, and high-dose treatment arms (20, 40, 60 g respectively).
Each treatment will total 75 g using maltodextrin to account for mass difference (55, 35, 15 g respectively).
他の名前:
|
|
実験的:High-Dose SDC
60 g of raw corn starch (SDC) + 15g of maltodextrin = 75 g total Researchers hypothesize that raw corn starch will have an extended or elevated plasma GLP-1 into 2-3 hrs post-consumption.
Participants will consume the high-dose once during one of the study visits.
|
75 g of maltodextrin diluted in 200 mL of water, taken once at a study visit
他の名前:
Quantity of raw corn starch will vary between low, medium, and high-dose treatment arms (20, 40, 60 g respectively).
Each treatment will total 75 g using maltodextrin to account for mass difference (55, 35, 15 g respectively).
他の名前:
|
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Total GLP-1 Secretion
時間枠:From baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of treatment for each participant over the course of the 4 arms.
|
To determine the impact of 20, 40, 60 g of SDC compared to a maltodextrin control on total plasma GLP-1 concentrations at baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of SDC.
Assessed via spun blood plasma and ELISA Total GLP-1 Kits.
|
From baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of treatment for each participant over the course of the 4 arms.
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Satiety
時間枠:From baseline, 60, 120, 180 minutes and after a second meal for each participant over the course of the 4 arms.
|
Measure satiety at baseline, 60, 120, 180 minutes and after a second meal via satiety questionnaires
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From baseline, 60, 120, 180 minutes and after a second meal for each participant over the course of the 4 arms.
|
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Blood Glucose
時間枠:From baseline, and 15, 30, 60, 90, 120, and 180 minutes post-consumption for each participant over the course of the 4 arms
|
To determine the impact of 20, 40, 60 g of SDC compared to a maltodextrin control on total plasma glucose concentrations at baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of SDC.
Assessed via spun blood serum.
|
From baseline, and 15, 30, 60, 90, 120, and 180 minutes post-consumption for each participant over the course of the 4 arms
|
|
Insulin
時間枠:From baseline, and 15, 30, 60, 90, 120, and 180 minutes post-consumption for each participant over the course of the 4 arms
|
To determine the impact of 20, 40, 60 g of SDC compared to a maltodextrin control on insulin concentrations at baseline and 15, 30, 60, 90, 120, and 180 minutes post-consumption of SDC.
Assessed via spun blood plasma.
|
From baseline, and 15, 30, 60, 90, 120, and 180 minutes post-consumption for each participant over the course of the 4 arms
|
協力者と研究者
スポンサー
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
その他の研究ID番号
- IRB-2025-00000283
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
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