- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT02694172
Human Faecal Microbiota in Type 2 Diabetes
Analysis of the Diversity of Faecal Bacteria in Healthy and Type 2 Diabetic Subjects
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
-All diabetic and control non-diabetic subjects (of same BMI) must comply with all the following inclusion criteria:
- Ethnic background: Caucasian
- BMI: 25 to 40 kg/m2
- Fasting blood glucose > 7 mmol/L
- Fasting Hemoglobin A1c > 7%
- Consume mainly typical Western diets daily
- Having obtained his/her informed consent
Lean non-diabetic healthy subjects must comply with the following inclusion criteria:
- Ethnic background: Caucasian
- BMI: 20 to 25 kg/m2
- Fasting blood glucose < 5.5 mmol/L
- Fasting Hemoglobin A1c < 6 %
- Consume mainly typical Western diets daily
- Having obtained his/her informed consent
Exclusion Criteria:
Diabetic and healthy (same BMI) subjects representing one or more of the following criteria are excluded from participation in the study.
- Dietary supplements or medications known to alter gut bacteria, such as antibiotic medication or intestinal transit modulators
- People actively take cortisol or dexamethasone should be excluded from the study
- People under a-amylase/a-glucosidase inhibitors should be excluded from the study. However, patients under metformin can be accepted for this study.
- Patients under metformin suffering from gastrointestinal side effects within a 6-month time period prior to the trial
- Regular consumption of fermented dairy products
- Vegetarians
- Frequent diarrhea (more than two loose stool per day) within 7 days before the enrollment
- HIV seropositive
- Having known gastrointestinal diseases such as ulcerative colitis, Crohn's disease, peptic ulcers and cancer
- Patients who cannot be expected to comply with treatment
- Currently participating or having participated in another clinical trial during the last 6 months prior to the beginning of this study
- Females with hormone therapy will be excluded from the study
Lean healthy subjects representing one or more of the following criteria are excluded from participation in the study.
- Dietary supplements or medications known to alter gut bacteria, such as antibiotic medication or intestinal transit modulators
- Regular consumption of fermented dairy products
- Vegetarians
- Frequent diarrhea (more than two loose stool per day) within 7 days before the enrollment
- HIV seropositive
- Having known gastrointestinal diseases such as ulcerative colitis, Crohn's disease, peptic ulcers and cancer
- Patients who cannot be expected to comply with treatment
- Currently participating or having participated in another clinical trial during the last 6 months prior to the beginning of this study
- Females with hormone therapy will be excluded from the study
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Nicht randomisiert
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
---|---|
Kein Eingriff: Lean non diabetic
Lean and healthy subjects receiving no intervention
|
|
Experimental: Overweight non diabetic
fiber rich cereal bars, two bars a day for 4 weeks
|
Two cereals per day and per subject for 4 weeks
Andere Namen:
|
Experimental: Overweight diabetic
fiber rich cereal bars, two bars a day for 4 weeks
|
Two cereals per day and per subject for 4 weeks
Andere Namen:
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Fecal microbiota profile
Zeitfenster: Baseline samples taken after 2 weeks of diet normalization period
|
Fecal samples taken after the two week diet normalization are subjected to bacteria 16S rDNA sequencing and by quantitative PCR.
|
Baseline samples taken after 2 weeks of diet normalization period
|
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Metabonomic analysis in faeces
Zeitfenster: Samples taken after 2 weeks of diet normalization period (baseline) and 4 weeks of cereal bars intake when applicable
|
Samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
Then, samples are analyzed by 1HNMR.
|
Samples taken after 2 weeks of diet normalization period (baseline) and 4 weeks of cereal bars intake when applicable
|
Metabonomic analysis in plasma
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
Then, samples are analyzed by 1HNMR.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Metabonomic analysis in urine
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
Then, samples are analyzed by 1HNMR.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma glucose
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma insulin
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma free fatty acids
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma triglycerides
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma total cholesterol
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Plasma HDL cholesterol
Zeitfenster: Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Baseline samples for lean non-diabetic, overweight non-diabetic and overweight diabetic subjects.
Post intervention samples from overweight non-diabetic and diabetic subjects.
|
Samples taken after 2 weeks of diet normalization period and 4 weeks of cereal bars intake when applicable
|
Mitarbeiter und Ermittler
Mitarbeiter
Ermittler
- Hauptermittler: Alain Golay, Prof, University Hospital, Geneva
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 06.42.NRC
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