- ICH GCP
- Реестр клинических исследований США
- Клиническое испытание NCT07916688
Lactic Acid Bacteria in Functional Diarrheal Disorders
Efficacy of Lactic Acid Bacteria in Managing Diarrhea-Associated Functional Gastrointestinal Disorders: A Randomized Controlled Trial
The goal of this clinical trial is to learn whether a probiotic supplement can improve symptoms and quality of life in adults with diarrhea-predominant irritable bowel syndrome (IBS-D) or functional diarrhea (FD). These conditions can cause frequent loose stools, abdominal discomfort, and a lower quality of life.
The main questions this study aims to answer are:
- Does the probiotic improve quality of life compared with a placebo (a look-alike capsule that contains no active bacteria)?
- Does the probiotic help participants have more normal stool consistency and fewer bowel movements?
- Is the probiotic safe and well tolerated in people with IBS-D or FD?
Researchers will compare the probiotic supplement with a placebo to see whether the probiotic improves symptoms and quality of life.
Participants will:
- Take either the probiotic or placebo capsule once daily for 3 months.
- Switch to the other study treatment for an additional 3 months.
- Complete quality-of-life questionnaires at the start of the study, after 3 months, and after 6 months.
- Record the number of bowel movements each day throughout the study.
- Record stool consistency each day using the Bristol Stool Form Scale.
- Record daily pain during bowel movements using a Visual Analog Scale (VAS).
- Report any medications they take and any health problems that occur during the study.
The study will follow each participant for 6 months. Researchers hope the results will help determine whether this probiotic is a useful treatment option for people living with IBS-D or functional diarrhea.
Обзор исследования
Статус
Вмешательство/лечение
Тип исследования
Регистрация (Оцененный)
Фаза
- Непригодный
Контакты и местонахождение
Контакты исследования
- Имя: Tamás Molnár
- Номер телефона: +36-62-545-189
- Электронная почта: molnar.tamas@med.u-szeged.hu
Места учебы
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Szeged, Венгрия, 6725
- Рекрутинг
- University of Szeged
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Контакт:
- Tamás Molnár
- Номер телефона: +36-62-545-189
- Электронная почта: molnar.tamas@med.u-szeged.hu
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Критерии участия
Критерии приемлемости
Возраст, подходящий для обучения
Принимает здоровых добровольцев
Полы, имеющие право на обучение
Описание
Inclusion Criteria:
- Adults aged 18 years or older.
- Have diarrhea-predominant irritable bowel syndrome (IBS-D) or functional diarrhea (FD) diagnosed using Rome V criteria.
- Have had symptoms for at least 6 months.
- Have no warning signs that suggest another digestive disease.
- Have been taking the same treatment for IBS-D, FD, and other medical conditions for at least 1 month before joining the study.
- Are willing and able to provide written informed consent and follow study procedures.
Exclusion Criteria:
- Took antibiotics or probiotic products within the past 4 weeks.
- Had abdominal surgery in the past, except appendix removal (appendectomy).
- Have another type of irritable bowel syndrome or another functional digestive disorder.
- Have a known digestive disease that may explain their symptoms.
- Plan to start a new medication or change the dose of an existing medication during the study (except antispasmodic medications).
- Are unable or unwilling to complete study questionnaires and daily symptom records.
Учебный план
Как устроено исследование?
Детали дизайна
- Основная цель: Уход
- Распределение: Рандомизированный
- Интервенционная модель: Назначение кроссовера
- Маскировка: Тройной
Оружие и интервенции
Группа участников / Армия |
Вмешательство/лечение |
|---|---|
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Экспериментальный: Experimental First Arm
Participants randomized to this arm will receive LL1500, a probiotic supplement containing Lactobacillus rhamnosus and Lactobacillus plantarum, once daily for 3 months, followed by crossover to matching placebo for an additional 3 months under double-blind conditions. |
LL1500 is an oral probiotic supplement administered once daily as a gelatin capsule. Each capsule contains lyophilized Lactobacillus rhamnosus and Lactobacillus plantarum, providing at least 7.5 × 10⁹ colony-forming units (CFU) of each bacterial strain. Participants will receive LL1500 for a 3-month treatment period. Matching oral placebo administered once daily as a gelatin capsule containing inactive excipients and no live bacterial strains. Participants will receive placebo for a 3-month treatment period. |
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Плацебо Компаратор: Placebo First Arm
Participants randomized to this arm will receive matching placebo once daily for 3 months, followed by crossover to LL1500, a probiotic supplement containing Lactobacillus rhamnosus and Lactobacillus plantarum, for an additional 3 months under double-blind conditions. |
LL1500 is an oral probiotic supplement administered once daily as a gelatin capsule. Each capsule contains lyophilized Lactobacillus rhamnosus and Lactobacillus plantarum, providing at least 7.5 × 10⁹ colony-forming units (CFU) of each bacterial strain. Participants will receive LL1500 for a 3-month treatment period. Matching oral placebo administered once daily as a gelatin capsule containing inactive excipients and no live bacterial strains. Participants will receive placebo for a 3-month treatment period. |
Что измеряет исследование?
Первичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
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Irritable Bowel Syndrome Quality of Life (IBS-QOL) Total Score at 3 Months
Временное ограничение: Three months after enrollment
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IBS-specific quality of life assessed using the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire. The IBS-QOL contains 34 items and yields a total score ranging from 0 to 100, with higher scores indicating better quality of life. The outcome measure is the change in total IBS-QOL score from baseline to 3 months. |
Three months after enrollment
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Вторичные показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
|
Irritable Bowel Syndrome Quality of Life (IBS-QOL) Total Score at 6 Months
Временное ограничение: Six months after enrollment
|
IBS-specific quality of life assessed using the Irritable Bowel Syndrome Quality of Life (IBS-QOL) questionnaire. The IBS-QOL contains 34 items and yields a total score ranging from 0 to 100, with higher scores indicating better quality of life. The outcome measure is the change in total IBS-QOL score from baseline to 6 months. |
Six months after enrollment
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Mean Daily Stool Frequency at 3 Months
Временное ограничение: Three months after enrollment
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Mean number of bowel movements per day recorded by participants. The outcome measure is the change in average daily stool frequency from baseline to 3 months. Lower values indicate fewer bowel movements. |
Three months after enrollment
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Mean Daily Stool Frequency at 6 Months
Временное ограничение: Six months after enrollment
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Mean number of bowel movements per day recorded by participants. The outcome measure is the change in average daily stool frequency from baseline to 6 months. Lower values indicate fewer bowel movements. |
Six months after enrollment
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Mean Bristol Stool Form Scale Score at 3 Months
Временное ограничение: Three months after enrollment
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Stool consistency assessed using the Bristol Stool Form Scale, which ranges from Type 1 (hard stools) to Type 7 (watery stools). Types 3 to 5 are considered normal stool consistency. The outcome measure is the change in mean Bristol Stool Form Scale score from baseline to 3 months. |
Three months after enrollment
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Mean Bristol Stool Form Scale Score at 6 Months
Временное ограничение: Six months after enrollment
|
Stool consistency assessed using the Bristol Stool Form Scale, which ranges from Type 1 (hard stools) to Type 7 (watery stools). Types 3 to 5 are considered normal stool consistency. The outcome measure is the change in mean Bristol Stool Form Scale score from baseline to 6 months. |
Six months after enrollment
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Другие показатели результатов
Мера результата |
Мера Описание |
Временное ограничение |
|---|---|---|
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Defecation Pain Visual Analog Scale (VAS) Score at 3 Months
Временное ограничение: Three months after enrollment
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Pain during defecation assessed daily using a Visual Analog Scale (VAS). Scores range from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. The outcome measure is the change in mean daily VAS score from baseline to 3 months. |
Three months after enrollment
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Defecation Pain Visual Analog Scale (VAS) Score at 6 Months
Временное ограничение: Six months after enrollment
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Pain during defecation assessed daily using a Visual Analog Scale (VAS). Scores range from 0 to 10, where 0 indicates no pain and 10 indicates the worst imaginable pain. The outcome measure is the change in mean daily VAS score from baseline to 6 months. |
Six months after enrollment
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Treatment-Emergent Adverse Events
Временное ограничение: From enrollment through 6 months
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Number of participants experiencing any adverse event reported during treatment with either the probiotic supplement or placebo. Adverse events will be collected throughout study participation. |
From enrollment through 6 months
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Соавторы и исследователи
Спонсор
Даты записи исследования
Изучение основных дат
Начало исследования (Оцененный)
Первичное завершение (Оцененный)
Завершение исследования (Оцененный)
Даты регистрации исследования
Первый отправленный
Впервые представлено, что соответствует критериям контроля качества
Первый опубликованный (Действительный)
Обновления учебных записей
Последнее опубликованное обновление (Действительный)
Последнее отправленное обновление, отвечающее критериям контроля качества
Последняя проверка
Дополнительная информация
Термины, связанные с этим исследованием
Дополнительные соответствующие термины MeSH
Другие идентификационные номера исследования
- NNGYK/09884-2/2026
Планирование данных отдельных участников (IPD)
Планируете делиться данными об отдельных участниках (IPD)?
Информация о лекарствах и устройствах, исследовательские документы
Изучает лекарственный продукт, регулируемый FDA США.
Изучает продукт устройства, регулируемый Управлением по санитарному надзору за качеством пищевых продуктов и медикаментов США.
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