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Effect of Probiotics on Appetite Regulation in Adults With Overweight/Obesity (ProBiSat)

2026年8月10日 更新者:Maastricht University Medical Center

Probiotic Regulation of Food Intake Through Satiety Stimulation and Gut Microbiota Modulation

The goal of this 16-week randomised, placebo-controlled parallel study is to investigate the effect of a newly formed probiotic supplement on satiety and gut microbiota composition in healthy men and women with overweight or obesity form 20-70 years old. The main question it aims to answer is:

Does the probiotic supplement increase feelings of satiety and alter gut microbiota composition?

Participants will:

  • Receive a daily dose of 6 g probiotic supplement (packed in sachets of 3 g) or placebo for 16 weeks.
  • Visit the research unit 3 times at baseline, week 8 and week 16 of the intervention for blood draws and delivering fecal samples.
  • Keep a study diary to report deviations from their daily habits and fill in food questionnaires.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

Rationale: Satiety hormones, including glucagon-like peptide-1 (GLP-1), are key regulators of food intake. Deficiencies in the release of satiety hormones as well as alterations in the composition and the function of the gut microbiota are hallmarks of overweight and obesity. Probiotics can improve the overall structure of the gut microbiota, and show strain-specific differences with regard to their ability to stimulate satiety hormones. Those animal-based findings, if confirmed in human studies, may pose a gateway for decreased food intake, weight management, and ultimately weight loss. The investigators hypothesise that a newly developed combination of probiotic strains, specifically selected for their potential to (in vitro) influence pathways related to weight management, will decrease food intake through increased release of satiety hormones (i.e. GLP-1) and beneficial alteration of the gut microbiota in humans.

Objective: The primary objective of the study is to investigate the effects of a combination of specifically selected probiotic strains in a new probiotic formulation on ad libitum food intake, in individuals with overweight and/or obesity. The investigators will address this objective firstly with an acute study followed by a proof-of-concept 4-months intervention study comparing a total of 98 individuals in a 16-week randomised, placebo-controlled parallel study (49 participants probiotic/ 49 participants placebo).

Study design: This intervention study will have a randomised, controlled parallel design. The total study duration will be 16 weeks.

Study population: A total of 98 men and women between the ages of 20-70 years old, with overweight/obesity (BMI: 26-40 kg/m2) will be recruited, accounting for a drop-out rate of 20%.

Intervention: Study participants will receive a daily dose of 6 g probiotic supplement (packed in sachets of 3 g) or placebo for 16 weeks.

Main study parameters/endpoints: At baseline and after 16 weeks, participants will visit the research facilities for assessments. The primary endpoint is the difference in satiety measured by ad libitum food intake comparing the probiotic and control intervention. Secondary outcome parameters are related to changes in satiety hormones (including GLP-1), fecal microbiota analysis, insulin sensitivity (HOMA-IR), inflammatory markers and lipid metabolism.

Exploratory outcomes concern perceived satiety, body composition and mental health. This study will provide insight into the potential beneficial effect of a newly composed probiotic supplement on satiety in overweight/obese adults.

研究の種類

介入

入学 (推定)

98

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究連絡先のバックアップ

研究場所

    • Limburg
      • Maastricht、Limburg、オランダ、6200MD
        • 募集
        • Maastricht University, Department of Nutrition and Movement Sciences
        • 主任研究者:
          • Tanja Adam, PhD
        • コンタクト:
        • コンタクト:

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

はい

説明

Inclusion Criteria:

  • Men and women, aged between 20-70 years
  • BMI ³ 25 kg/m2
  • Stable body weight (weight gain or loss < 3 kg in the past three months)
  • Willingness to give up being a blood donor from 8 weeks before the start of the study, during the study and for 4 weeks after completion of the study
  • No difficult venipuncture as evidenced during the screening visit

Exclusion Criteria:

  • Diabetic patients (type 1 and type 2)
  • Abuse of drugs
  • More than 2 units alcoholic consumptions per day for women and 3 for men
  • Use of products or dietary supplements known to interfere with the main outcomes 3 months prior to the start of the study as judged by the principal investigators
  • Gastrointestinal disease (including IBD and IBS)
  • Use of an investigational product within another biomedical intervention trial within the previous 1-month
  • Severe medical conditions that might interfere with the study, such as epilepsy, asthma, kidney failure or renal insufficiency, chronic obstructive pulmonary disease, autoimmune disease and rheumatoid arthritis
  • Active cardiovascular disease like congestive heart failure or cardiovascular event, such as an acute myocardial infarction or cerebrovascular accident
  • use of lipid- and glucose lowering medication, corticosteroid use
  • Psychiatric diagnoses including clinical depression
  • Intolerances or dietary habits that might interfere with the study (i.e. lactose intolerance or veganism)
  • pregnancy
  • smoking, vaping
  • use of antibiotics up to 3 months prior to the study

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

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:並列代入
  • マスキング:4倍

武器と介入

参加者グループ / アーム
介入・治療
実験的:Probiotic supplement
6g of probiotic supplement daily
16-week consumption of 6 g/day of probiotic supplement
プラセボコンパレーター:Placebo
6g of placebo daily
16-week consumption of 6 g/day of placebo

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 food intake
時間枠:From enrolment to the end of the 16-week intervention
The primary objective of the study is to investigate the effects of a combination of specifically selected probiotic strains in a new probiotic formulation on ad libitum food intake, in individuals with overweight and/or obesity. The primary endpoint is the difference in satiety measured by ad libitum food intake comparing the probiotic and control intervention.
From enrolment to the end of the 16-week intervention

二次結果の測定

結果測定
メジャーの説明
時間枠
Satiety hormones
時間枠:From enrolment to the end of the 16-week intervention
Satiety hormones, GLP-1, PYY, and ghrelin, will be measured in the blood by taking fasted and postprandial blood samples at multiple timepoints.
From enrolment to the end of the 16-week intervention
Subjective Appetite Sensation
時間枠:From enrolment to the end of the 16-week intervention
Visual Analogue Scales (VAS) will be used to register different aspects of appetite, thirst, and well-being during the test days. The questions concern hunger, satiety, fullness, thirst, prospective food consumption, and desire to eat. Using a validated, 100-mm line, participants place a mark on the line between anchors like "not at all" (0 mm) and "extremely" (100 mm). Appetite sensation will be assessed at 30-minute intervals starting at time -30 until the ad libitum lunch for a total of 240 minutes.
From enrolment to the end of the 16-week intervention
Fecal microbial composition
時間枠:From enrolment to the end of the 16-week intervention
Stool samples will be collected at home and immediately stored in the freezer at -20°C. Participants will bring the stool sample to the laboratory, while preserving the cold chain, where samples will be kept in a -80°C freezer until further analysis. We will profile the gut microbiota composition at baseline and after treatment using 16S rRNA gene amplicon sequencing techniques. Sequencing data will be processed using our validated in-house Bio-IT pipeline and microbial richness, diversity, community structure and taxonomic composition will be linked to the probiotic intervention as well as treatment outcomes.
From enrolment to the end of the 16-week intervention
Diet
時間枠:From enrolment to the end of the 16-week intervention
Participants will be instructed to continue their usual dietary pattern throughout the intervention period to study the isolated effect of probiotic supplementation. Before, at week 8 and in the last week of the intervention period, participants' dietary pattern will be assessed by means of a FFQ.
From enrolment to the end of the 16-week intervention
Physical Activity
時間枠:From enrolment to the end of the 16-week intervention
Participants will be instructed to continue their usual physical activity pattern throughout the intervention period to study the isolated effect of probiotic supplementation. Before, at week 8 and in the last week of the intervention period, participants' physical acitivity pattern will be assessed by means of the SQUASH questionnaire.
From enrolment to the end of the 16-week intervention
Insulin resistance
時間枠:From enrolment to the end of the 16-week intervention
Fasted blood samples for glucose and insulin will be taken to determine the homeostatic model assessment of insulin resistance (HOMA-IR) and beta-cell function.
From enrolment to the end of the 16-week intervention
Blood pressure
時間枠:From enrolment to the end of the 16-week intervention
Office BP (SBP and DBP) will be determined in four-fold (the first measurement will be discarded, and the last three measurements will be averaged) using a semi continuous blood pressure monitoring device (Omron M7, CEMEX Medische Techniek, Nieuwegein, The Netherlands).
From enrolment to the end of the 16-week intervention
Heart rate
時間枠:From enrolment to the end of the 16-week intervention
Heart rate (HR) will be determined in four-fold (the first measurement will be discarded, and the last three measurements will be averaged) using a semi continuous blood pressure monitoring device (Omron M7, CEMEX Medische Techniek, Nieuwegein, The Netherlands).
From enrolment to the end of the 16-week intervention
Lipids
時間枠:From enrolment to the end of the 16-week intervention
Fasting and postprandial serum triacylglycerol (TAG) and total cholesterol (TC) and HDL-C concentrations will be measured.
From enrolment to the end of the 16-week intervention
Inflammatory markers
時間枠:From enrolment to the end of the 16-week intervention
Plasma markers related to systemic inflammation will be measured in the blood to assess low-grade systemic inflammatory responses.
From enrolment to the end of the 16-week intervention
Body Composition
時間枠:From enrolment to the end of the 16-week intervention
Measurement of body composition is done by BodPod in a fasted state.
From enrolment to the end of the 16-week intervention
Anthropometric measurements - Body weight
時間枠:From enrolment to the end of the 16-week intervention
Body weight will be measured in kilograms before the measurements without shoes and heavy clothing.
From enrolment to the end of the 16-week intervention
Anthropometric measurements - length
時間枠:From enrolment to the end of the 16-week intervention
Length will be measured in centimeters before the measurements without shoes and heavy clothing.
From enrolment to the end of the 16-week intervention
Anthropometric measurements - waist and hip circumferences
時間枠:From enrolment to the end of the 16-week intervention
Waist and hip circumferences will be measured in centimeters before the measurements using a SECA tape measure
From enrolment to the end of the 16-week intervention
Cognitive restrained
時間枠:From enrolment to the end of the 16-week intervention
Cognitive restrained, disinhibition and hunger will be assessed using the Dutch three factor eating questionnaire
From enrolment to the end of the 16-week intervention
Disinhibition
時間枠:From enrolment tot he end of the 16-week intervention
Cognitive restrained, disinhibition and hunger will be assessed using the Dutch three factor eating questionnaire
From enrolment tot he end of the 16-week intervention
Hunger
時間枠:From enrolment tot he end of the 16-week intervention
Cognitive restrained, disinhibition and hunger will be assessed using the Dutch three factor eating questionnaire
From enrolment tot he end of the 16-week intervention
Quality of life assessment
時間枠:From enrolment to the end of the 16-week intervention
The quality of life will be assessed at the end of the interventions using a 32-item questionnaire. This measure will quantify quality of life on different dimensions: social, spiritual, emotional, cognitive, physical, activities of daily living, and integrated quality of life.
From enrolment to the end of the 16-week intervention
Mental health
時間枠:From enrolment to the end of the 16-week intervention
Mental health will be assessed using the validated Beck Depression (BDI) and State-Trait Anxiety Inventories (STAI).
From enrolment to the end of the 16-week intervention
Mood
時間枠:From enrolment to the end of the 16-week intervention
Mood will be tested using the widely-applied Profile of Mood States (POMS).
From enrolment to the end of the 16-week intervention
Stress
時間枠:From enrolment to the end of the 16-week intervention
Stress will be assessed using the Perceived Stress Scale (PSS).
From enrolment to the end of the 16-week intervention
Sleep characteristics
時間枠:From enrolment to the end of the 16-week intervention
Sleep characteristics will be assessed at the end of the interventions using the Pittsburgh Sleep Quality Index (PSQI).
From enrolment to the end of the 16-week intervention

協力者と研究者

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スポンサー

協力者

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2026年3月18日

一次修了 (推定)

2029年8月18日

研究の完了 (推定)

2029年8月18日

試験登録日

最初に提出

2026年3月5日

QC基準を満たした最初の提出物

2026年7月16日

最初の投稿 (実際)

2026年7月21日

学習記録の更新

投稿された最後の更新 (実際)

2026年8月12日

QC基準を満たした最後の更新が送信されました

2026年8月10日

最終確認日

2026年7月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • METC 25-042

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