The Effect of Duodenal, Ileal or Combined Infusion of Tastants on Food Intake
Rationale: The appearance of tastants in the small intestine can result in the activation of a negative feedback mechanism from different parts of the intestine to the stomach, the small intestine and to the central nervous system. These processes inhibit food processing, appetite sensations and food intake, and furthermore they increase feelings of satiety and satiation. The effects of intraduodenal and/or intraileal infusion of a combination of tastants (sweet (rebaudioside A), bitter (quinine) en umami (monosodium glutamate(MSG))) and placebo on ad libitum food intake, satiation and gastrointestinal symptoms will be investigated.
Objective: To investigate the effect of intraduodenal, intraileal and combined infusion of a combination of tastants versus infusion of placebo on food intake.
Secondary objectives:
- To compare the effect of intraduodenal versus intraileal versus combined intraduodenal and intraileal delivery of a combination of tastants on satiation.
- To assess the effect of intraduodenal and/or intraileal delivery of a combination of tastants on gastrointestinal symptoms/complaints.
調査の概要
状態
条件
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
-
Limburg
-
Maastricht、Limburg、オランダ、6229HX
- Maastricht University Medical Center
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Based on medical history and previous examination, no gastrointestinal complaints can be defined.
- Age between 18 and 65 years. This study will include healthy adult subjects (male and female). Women must be taking contraceptives.
- BMI between 18 and 25 kg/m2)
- Weight stable over at least the last 6 months
Exclusion Criteria:
- History of severe cardiovascular, respiratory, urogenital, gastrointestinal/ hepatic, hematological/immunologic, HEENT (head, ears, eyes, nose, throat), dermatological/connective tissue, musculoskeletal, metabolic/nutritional, endocrine, neurological/psychiatric diseases, allergy, major surgery and/or laboratory assessments which might limit participation in or completion of the study protocol. The severity of the disease (major interference with the execution of the experiment or potential influence on the study outcomes) will be decided by the principal investigator.
- Use of medication, including vitamin supplementation, except oral contraceptives, within 14 days prior to testing
- Administration of investigational drugs or participation in any scientific intervention study which may interfere with this study (to be decided by the principle investigator), in the 180 days prior to the study
- Major abdominal surgery interfering with gastrointestinal function (uncomplicated appendectomy, cholecystectomy and hysterectomy allowed, and other surgery upon judgement of the principle investigator)
- Dieting (medically prescribed, vegetarian, diabetic, microbiological, biological dynamic)
- Pregnancy, lactation
- Excessive alcohol consumption (>20 alcoholic consumptions per week)
- Smoking
- Weight <60kg
- Non-tasters of sweet, bitter or umami
- Evidence of MSG-hypersensitivity or Chinese restaurant syndrome
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:防止
- 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:独身
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
実験的:Duodenal tastants, ileal placebo
Duodenal infusion of combination of tastants (sweet, bitter and umami), ileal infusion of placebo (tap water)
|
Duodenal infusion of combination of tastants (sweet, bitter and umami)
Ileal infusion of placebo (tap water)
|
|
実験的:Duodenal placebo, ileal tastants
Duodenal infusion of placebo (tap water), ileal infusion of combination of tastants (sweet, bitter and umami)
|
Ileal infusion of combination of tastants (sweet, bitter and umami)
Duodenal infusion of placebo (tap water)
|
|
実験的:Duodenal tastants, ileal tastants
Duodenal infusion of combination of tastants (sweet, bitter and umami), ileal infusion of combination of tastants (sweet, bitter and umami)
|
Duodenal infusion of combination of tastants (sweet, bitter and umami)
Ileal infusion of combination of tastants (sweet, bitter and umami)
|
|
プラセボコンパレーター:Duodenal placebo, ileal placebo
Duodenal infusion of placebo (tap water), ileal infusion of placebo (tap water)
|
Ileal infusion of placebo (tap water)
Duodenal infusion of placebo (tap water)
|
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 |
|---|---|---|
|
Ad libitum meal intake
時間枠:5 weeks
|
Difference in ad libitum meal intake (as measured during ad libitum pasta meal) at end of the test day.
|
5 weeks
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Satiation
時間枠:5 weeks
|
Difference in satiation (as measured by VAS) per time point.
|
5 weeks
|
|
GI-symptoms
時間枠:5 weeks
|
Difference in gastro-intestinal symptoms (as measured by VAS) per time point.
|
5 weeks
|
協力者と研究者
捜査官
- 主任研究者:Ad AM Masclee, Prof.、Maastricht University Medical Center
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
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
その他の研究ID番号
- NL59530.068.16
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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米国FDA規制医薬品の研究
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