Erfassung gesunder Darmbakterien im Zusammenhang mit einer ballaststoffreichen Ernährung (iTARGET)
In-Silico- und In-vitro-Targeting gesunder Darmbakterien mit ballaststoffabbauendem Stoffwechselpotential
The role of the intestinal microbiota on health is now well recognised, and diet is one of the factors influencing the maintenance of a healthy intestinal microbiota. More specifically, the consumption of fruit, vegetables and cereals is associated with good health and, in particular, with an increase in the relative abundance of bacterial groups described as beneficial. To date, a large number of bacterial species in the intestinal microbiota have yet to be isolated and cultivated, which limits the characterisation of their potential health benefits. In order to isolate and cultivate these intestinal bacteria, it is particularly relevant to recruit individuals with a high-fibre diet.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
Detaillierte Beschreibung
Since two decades, numerous studies have been performed to better understand the role of the gut microbiota in health and disease. An imbalance in the intestinal microbiota, known as dysbiosis, is frequently described as a cause of many chronic diseases and metabolic dysfunctions in humans. Among the factors that play an important role in maintaining this balance, diet plays a predominant role. More specifically, the consumption of fruit, vegetables and cereals is associated with good health and, in particular, with an increase in the relative abundance of bacterial groups described as beneficial. Modulating the intestinal microbiota via the or directly by providing these beneficial bacteria (next generation probiotics NGPs) is therefore a possible promising approach for the prevention and/or treatment of pathologies. To date, a large number of bacterial species in the intestinal microbiota have yet to be isolated and cultivated, which limits the characterization of their potential health benefits. Having strains that can be isolated and cultured is an essential step in phenotyping and characterization. In order to isolate and cultivate these intestinal bacteria, it is particularly important to recruit individuals with a high-fiber diet. In this context, a positive selection of donors, based on their dietary profiles highly enriched in fiber, is essential. In this study, the aim is to identify in silico unprecedented potentially new beneficial gut bacteria, and isolate, culture and characterize these bacterial species for their potential. This will be an innovative approach, using culturomics tools guided by metagenomics to isolate them. To do this, the fecal samples of 10 healthy volunteers will be collected with a regular and diversified intake of fruit, vegetables and cereals, which encourage the growth of beneficial micro-organisms and increase the richness of the intestinal microbiota.
Studientyp
Studientyp
Einschreibung (Tatsächlich)
Einschreibung
Kontakte und Standorte
Studienorte
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Clermont-Ferrand, Frankreich, 63009
- CRNH Auvergne
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Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Probenahmeverfahren
Studienpopulation
General population residing in Clermont-Ferrand (France)
Beschreibung
Inclusion Criteria:
- Healthy adult subjects ;
- Age between 20 and 50 (limits included) ;
- BMI between 18.5 and 25 kg/m2 (excluding limits) ;
- Consumption of more than 5 portions of fruit and vegetables a day;
- Intake of at least 25g of dietary fibre per day;
- A varied diet with little processed food.
Exclusion Criteria:
- Antibiotics and/or transit modulators taken in the 3 months prior to sampling;
- Known pathologies;
- Current treatment;
- History of digestive surgery having an impact on the microbiota, deemed incompatible with the study (bariatric surgery);
- Consumption of food supplements based on protein preparations, probiotics or prebiotics;
- Smoking (even occasionally);
- Alcohol consumption > 2 glasses (i.e. 20 g) per day;
- Intense sporting activity;
- Pregnant or breast-feeding women;
- Persons under legal protection (curatorship, guardianship, etc.);
- Volunteers taking part in another intervention study;
- Persons refusing to be registered on the French Ministry of Health's Fichier National des Volontaires Sains (National Register of Healthy Volunteers);
- Subject not affiliated to the social security system;
- Subject in a period of exclusion from a previous study or having received a total amount of compensation exceeding 6000 euros over the 12 consecutive months prior to the start of the trial (after verification in the Fichier des Volontaires pour la Recherche Biomédicale).
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Beobachtungsmodelle: COHORT
- Zeitperspektiven: PROSPECTIVE
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
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Isolation and culture of one isolate from each target species
Zeitfenster: Up to 3 years
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Successful isolation and culture of at least one isolate from each target species previously identified through metagenomic data analyses. |
Up to 3 years
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Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
metagenomic profiles in relation to dietary profiles
Zeitfenster: Up to 3 years
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To obtain metagenomic profiles using shotgun sequencing of the gut microbiota (bacterial species), in relation to dietary profiles |
Up to 3 years
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growth capacity of the isolates
Zeitfenster: Up to 3 years
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To characterize the growth (growth monitoring by optical density) of the isolates of interest. |
Up to 3 years
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Functional potential of the isolates
Zeitfenster: up to 3 years.
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To characterize the genomic features of the isolates of interest (functional potential through genome annotation). |
up to 3 years.
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Phenotypic caracterization of the isolates
Zeitfenster: Up to 3 years
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To characterize phenotypically the isolates of interest by API gallery. |
Up to 3 years
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Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Ermittler
Ermittler
- Studienleiter: Victoria MESLIER, PhD, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
- Studienleiter: Claire CHERBUY, PhD, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Tatsächlich)
Primärer Abschluss
Studienabschluss (Tatsächlich)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- 2023-A01677-38
Plan für individuelle Teilnehmerdaten (IPD)
Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?
Beschreibung des IPD-Plans
No sharing planned
Arzneimittel- und Geräteinformationen, Studienunterlagen
Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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