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- Klinische proef NCT07850960
Effect of Omeprazole on Gut Microbiota in Adults With Obesity and GERD
Effect of Proton Pump Inhibitors on Gut Microbiota Composition in Adults With Obesity and Gastroesophageal Reflux Disease
This randomized, open-label, parallel-group study will evaluate the effect of short-term omeprazole therapy on gut and oral microbiota in adults aged 50-65 years with obesity and symptomatic gastroesophageal reflux disease. Participants will be randomized 1:1 to receive omeprazole 20 mg once daily for 14 days plus standard non-pharmacological recommendations for gastroesophageal reflux disease, or standard non-pharmacological recommendations alone. Clinical and laboratory assessments will be performed at baseline and after 14 days. Stool and saliva samples will be collected to assess gut and oral microbiota, and blood samples will be collected for laboratory biomarkers.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Studietype
Inschrijving (Geschat)
Fase
- Fase 4
Contacten en locaties
Studiecontact
- Naam: Georgy E. Leonov, MD, PhD
- Telefoonnummer: +7 9055687783
- E-mail: golerus@gmail.com
Studie Locaties
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-
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Moscow, Rusland, 115446
- Federal Research Centre of Nutrition, Biotechnology and Food Safety
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Contact:
- Georgy Leonov, MD, PhD
- Telefoonnummer: +7 9055687783
- E-mail: golerus@gmail.com
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Age 50 to 65 years, inclusive.
- Obesity, defined as body mass index (BMI) ≥30 kg/m².
- Symptomatic gastroesophageal reflux disease with mild or moderate typical symptoms, including heartburn and/or regurgitation.
- For female participants, postmenopausal status, defined as absence of menstruation for at least 12 months without another apparent cause of amenorrhea.
- Written informed consent to participate in the study.
Exclusion Criteria:
- Severe or exacerbated GERD, or GERD requiring acid-suppressive therapy or additional diagnostic evaluation.
- Use of proton pump inhibitors or histamine H2-receptor antagonists within 8 weeks prior to enrollment.
- Use of systemic antibiotics within 3 months prior to enrollment.
- Use of probiotic or synbiotic supplements within 8 weeks prior to enrollment.
- Inflammatory bowel disease, celiac disease, or other severe chronic gastrointestinal disorders that may substantially affect the gut microbiota.
- History of bariatric surgery or other major gastrointestinal surgery.
- Acute infectious or inflammatory disease at enrollment.
- History of myocardial infarction or stroke.
- Type 2 diabetes mellitus.
- Chronic heart failure, New York Heart Association functional class III-IV.
- Chronic kidney disease with estimated glomerular filtration rate <30 mL/min/1.73 m².
- Alcohol dependence or other substance use disorder.
- Severe psychiatric disorder or cognitive impairment that may interfere with providing informed consent or adherence to the study protocol.
- Known hypersensitivity or contraindications to omeprazole.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Omeprazole Plus Standard Non-pharmacological Recommendations
Participants will receive omeprazole 20 mg orally once daily for 14 days in addition to standard non-pharmacological recommendations for gastroesophageal reflux disease. |
Omeprazole 20 mg administered orally once daily for 14 days. Standard non-pharmacological recommendations for gastroesophageal reflux disease management. |
|
Actieve vergelijker: Standard Non-pharmacological Recommendations
Participants will receive standard non-pharmacological recommendations for gastroesophageal reflux disease for 14 days. |
Standard non-pharmacological recommendations for gastroesophageal reflux disease management. |
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Change in gut microbiota beta diversity
Tijdsspanne: Baseline and Day 14
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Gut microbiota beta diversity will be assessed using distance-based measures derived from 16S rRNA gene sequencing of stool samples, including Bray-Curtis dissimilarity and phylogenetic UniFrac distances. |
Baseline and Day 14
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Change in Shannon diversity index
Tijdsspanne: Baseline and Day 14
|
Change in gut microbiota alpha diversity assessed using the Shannon diversity index derived from 16S rRNA gene sequencing of stool samples. Higher values indicate greater microbial diversity. |
Baseline and Day 14
|
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Change in Simpson diversity index
Tijdsspanne: Baseline and Day 14
|
Change in gut microbiota alpha diversity assessed using the Simpson diversity index derived from 16S rRNA gene sequencing of stool samples. Values range from 0 to 1, with higher values indicating greater microbial diversity. |
Baseline and Day 14
|
|
Change in Chao1 richness estimator
Tijdsspanne: Baseline and Day 14
|
Change in gut microbiota richness assessed using the Chao1 richness estimator derived from 16S rRNA gene sequencing of stool samples. Higher values indicate greater estimated microbial richness. |
Baseline and Day 14
|
|
Change in modified Frequency Scale for the Symptoms of GERD total score
Tijdsspanne: Baseline and Day 14
|
Change in the total modified Frequency Scale for the Symptoms of GERD (mFSSG) score from baseline to Day 14. The questionnaire includes 14 items scored from 0 to 4. The total score ranges from 0 to 56, with higher scores indicating more frequent GERD-related symptoms. |
Baseline and Day 14
|
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Change in high-sensitivity C-reactive protein concentration
Tijdsspanne: Baseline and Day 14
|
Change in serum high-sensitivity C-reactive protein (hs-CRP) concentration. |
Baseline and Day 14
|
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Change in systemic immune-inflammation index
Tijdsspanne: Baseline and Day 14
|
Change in the systemic immune-inflammation index (SII), calculated as platelet count × neutrophil count / lymphocyte count. |
Baseline and Day 14
|
Andere uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Change in oral microbiota composition
Tijdsspanne: Baseline and Day 14
|
Changes in oral microbiota composition will be assessed using microbiome analysis of saliva samples, including measures of microbial diversity and taxonomic composition. |
Baseline and Day 14
|
|
Change in serum lipopolysaccharide-binding protein concentration
Tijdsspanne: Baseline and Day 14
|
Change in serum lipopolysaccharide-binding protein (LBP) concentration from baseline to Day 14. |
Baseline and Day 14
|
Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
- Voedingsstoornissen
- Overvoeding
- Lichaamsgewicht
- Ziekten van het spijsverteringsstelsel
- Gastro-intestinale aandoeningen
- Slokdarmaandoeningen
- Slokdarmmotiliteitsstoornissen
- Verslikkingsstoornissen
- Pathologische aandoeningen, tekenen en symptomen
- Voedings- en stofwisselingsziekten
- Tekenen en symptomen
- Overgewicht
- Obesitas
- Gastro-oesofageale reflux
- 2-pyridinylmethylsulfinylbenzimidazolen
- Sulfoxiden
- Zwavelverbindingen
- Organische chemicaliën
- Pyridines
- Heterocyclische verbindingen, 1-ring
- Heterocyclische verbindingen
- Benzimidazolen
- Heterocyclische verbindingen, 2-ring
- Heterocyclische verbindingen, gefuseerd ring
- Omeprazol
Andere studie-ID-nummers
- PPI-MICROBIOME-7-02-09-2026
- 22-15-00252-P (Ander subsidie-/financieringsnummer: Russian Science Foundation)
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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