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Development of a Noninvasive Metric to Measure Small Bowel Sensation - The Small Intestine Stress Test

8 września 2026 zaktualizowane przez: Xiao Jing (Iris) Wang, Mayo Clinic
The purpose of this research is to identify the concentration of mannitol solution (a type of sugar alcohol) that will generate a range of symptoms in individuals without Disorders of Gut Brain Interaction (DGBI) to establish the normative range of responses to small bowel (SB) distension.

Przegląd badań

Status

Rekrutacyjny

Warunki

Interwencja / Leczenie

Typ studiów

Interwencyjne

Zapisy (Szacowany)

20

Faza

  • Nie dotyczy

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Lokalizacje studiów

    • Minnesota
      • Rochester, Minnesota, Stany Zjednoczone, 55905
        • Rekrutacyjny
        • Mayo Clinic
        • Kontakt:
          • Taylor Hines
          • Numer telefonu: 507-538-9959

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Tak

Opis

Inclusion Criteria:

  • No current gastrointestinal symptoms
  • No prior history of GI disorders, in particular DGBIs
  • Ability to provide informed consent
  • Ability to participate in study procedures
  • Absence of other diseases (structural or metabolic) which could interfere with interpretation of the study results
  • For females, must not be pregnant or lactating due to radiation exposure.
  • Stable doses of thyroid replacement, estrogen replacement, low-dose aspirin for cardioprotection, and birth control are permissible.

Exclusion Criteria

  • Subjects on any medications that impact transit or integrity of small bowel mucosal barrier (e.g. chronic NSAIDS) of the GI tract will be excluded.
  • Patients with prior bowel surgery (not including appendectomy and cholecystectomy)
  • Patients who may have altered sensation (central sensitization or conditions that may induce bowel hyperalgesia) based on PI review of medical history (ie, fibromyalgia, endometriosis, chronic pelvic pain)

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

  • Główny cel: Diagnostyczny
  • Przydział: Nie dotyczy
  • Model interwencyjny: Zadanie dla jednej grupy
  • Maskowanie: Brak (otwarta etykieta)

Broń i interwencje

Grupa uczestników / Arm
Interwencja / Leczenie
Eksperymentalny: Healthy Volunteers Receiving Mannitol Solutions
Healthy adult volunteers will receive all three mannitol solution osmolarities-76 milliosmol (mOsm/L), 189 mOsm/L, and 325 mOsm/L-on three separate testing occasions spaced at least 5 days apart. Each solution will be administered orally as 500 mL radiolabeled with Pentetate Indium Disodium In-111 (111Indium-DTPA).
Participants will ingest 500 mL of mannitol solution at 76 mOsm/L radiolabeled with 111Indium-DTPA during one testing visit.
Participants will ingest 500 mL of mannitol solution at 189 mOsm/L radiolabeled with 111Indium-DTPA during one testing visit.
Participants will ingest 500 mL of mannitol solution at 325 mOsm/L radiolabeled with 111Indium-DTPA during one testing visit.
Scintigraphy will be used to track gastric emptying, small bowel transit, and colonic filling of the radiolabeled mannitol solution during each testing visit.

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Peak Gastrointestinal Symptom Severity During Small Bowel Transit Following 76 mOsm/L Mannitol Solution Ingestion
Ramy czasowe: At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.
Peak gastrointestinal symptom severity will be assessed using a 7-point Likert symptom scale after ingestion of radiolabeled mannitol solution. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, urgency, and related gastrointestinal symptoms. The peak symptom score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.
Peak Gastrointestinal Symptom Severity During Small Bowel Transit Following 189 mOsm/L Mannitol Solution Ingestion
Ramy czasowe: At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.
Peak gastrointestinal symptom severity will be assessed using a 7-point Likert symptom scale after ingestion of radiolabeled mannitol solution. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, urgency, and related gastrointestinal symptoms. The peak symptom score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.
Peak Gastrointestinal Symptom Severity During Small Bowel Transit Following 325 mOsm/L Mannitol Solution Ingestion
Ramy czasowe: At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.
Peak gastrointestinal symptom severity will be assessed using a 7-point Likert symptom scale after ingestion of radiolabeled mannitol solution. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, urgency, and related gastrointestinal symptoms. The peak symptom score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
At baseline and at 15-minute intervals beginning 30 minutes after ingestion through 180 minutes post-ingestion.

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Peak Abdominal Pain Intensity Following 76 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain intensity will be assessed after ingestion of 500 mL radiolabeled 76 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain intensity score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain intensity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak Abdominal Pain Intensity Following 189 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain intensity will be assessed after ingestion of 500 mL radiolabeled 189 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain intensity score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain intensity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak Abdominal Pain Intensity Following 325 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain intensity will be assessed after ingestion of 500 mL radiolabeled 325 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain intensity score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain intensity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak Abdominal Pain Unpleasantness Following 76 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain unpleasantness will be assessed after ingestion of 500 mL radiolabeled 76 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain unpleasantness score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain unpleasantness.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak Abdominal Pain Unpleasantness Following 189 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain unpleasantness will be assessed after ingestion of 500 mL radiolabeled 189 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain unpleasantness score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain unpleasantness.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak Abdominal Pain Unpleasantness Following 325 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Peak abdominal pain unpleasantness will be assessed after ingestion of 500 mL radiolabeled 325 mOsm/L mannitol solution using the Kohn Reactivity Scale. The peak pain unpleasantness score observed during the small bowel phase will be identified. The small bowel phase is defined as the period during which scintigraphy confirms radiolabeled solution in the small bowel and before more than 25% of tracer has reached the ascending colon. Higher scores indicate greater pain unpleasantness.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Change in Gastrointestinal Symptom Severity Following 76 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Gastrointestinal symptom severity will be assessed after ingestion of 500 mL radiolabeled 76 mOsm/L mannitol solution using a modified Gastric Symptom Severity Scale. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, loose stools, urgency, and related gastrointestinal symptoms. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Change in Gastrointestinal Symptom Severity Following 189 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Gastrointestinal symptom severity will be assessed after ingestion of 500 mL radiolabeled 189 mOsm/L mannitol solution using a modified Gastric Symptom Severity Scale. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, loose stools, urgency, and related gastrointestinal symptoms. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Change in Gastrointestinal Symptom Severity Following 325 mOsm/L Mannitol Solution
Ramy czasowe: Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion
Gastrointestinal symptom severity will be assessed after ingestion of 500 mL radiolabeled 325 mOsm/L mannitol solution using a modified Gastric Symptom Severity Scale. Symptoms assessed include abdominal pain or discomfort, nausea, bloating, distension, borborygmi, diarrhea, loose stools, urgency, and related gastrointestinal symptoms. Scores range from 1 to 7, with higher scores indicating greater symptom severity.
Baseline, then every 15 minutes from 30 minutes through 180 minutes after ingestion

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Sponsor

Śledczy

  • Główny śledczy: Xiao Jing Wang, MD, Mayo Clinic

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

24 sierpnia 2026

Zakończenie podstawowe (Szacowany)

30 czerwca 2027

Ukończenie studiów (Szacowany)

30 grudnia 2027

Daty rejestracji na studia

Pierwszy przesłany

8 września 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

8 września 2026

Pierwszy wysłany (Rzeczywisty)

14 września 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

14 września 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

8 września 2026

Ostatnia weryfikacja

1 września 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • 25-013906

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIE

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

produkt wyprodukowany i wyeksportowany z USA

Nie

Te informacje zostały pobrane bezpośrednio ze strony internetowej clinicaltrials.gov bez żadnych zmian. Jeśli chcesz zmienić, usunąć lub zaktualizować dane swojego badania, skontaktuj się z register@clinicaltrials.gov. Gdy tylko zmiana zostanie wprowadzona na stronie clinicaltrials.gov, zostanie ona automatycznie zaktualizowana również na naszej stronie internetowej .