Adipose Tissue Gene Expression and Metabolomics Links to the Gut Microbiome-brain Axis
NCT ID: NCT06869941
Last Updated: 2025-12-12
Study Results
Results pending
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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Recruitment Status
RECRUITING
Total Enrollment
60 participants
Study Classification
OBSERVATIONAL
Study Start Date
2025-08-05
Study Completion Date
2028-04-30
Brief Summary
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This study aims to understand how adipose tissue (fat) and the gut microbiota (the bacteria in the gut) may influence brain function and cognition. It has been observed that changes in adipose tissue in animals such as mice and Drosophila (a type of insect) affect memory and other brain functions. Additionally, it is believed that the gut microbiota also plays an important role in cognition.
This study will explore how gene expression in adipose tissue, blood metabolites, and the gut microbiota are related to cognitive function, such as memory and thinking, in individuals with and without obesity. The investigation will also assess whether these factors can predict changes in the brain over time and how they influence sleep, physical activity, and blood sugar regulation.
Advanced technologies will be used to analyze samples of tissue, blood, and microbiota, with the goal of identifying new mechanisms through which obesity affects the brain. This research may contribute to the development of new diagnostic and therapeutic strategies for cognitive problems in individuals with obesity.
This study will explore how gene expression in adipose tissue, blood metabolites, and the gut microbiota are related to cognitive function, such as memory and thinking, in individuals with and without obesity. The investigation will also assess whether these factors can predict changes in the brain over time and how they influence sleep, physical activity, and blood sugar regulation.
Advanced technologies will be used to analyze samples of tissue, blood, and microbiota, with the goal of identifying new mechanisms through which obesity affects the brain. This research may contribute to the development of new diagnostic and therapeutic strategies for cognitive problems in individuals with obesity.
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Detailed Description
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Conditions
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Obesity
Study Design
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Observational Model Type
COHORT
Study Time Perspective
PROSPECTIVE
Study Groups
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WITHOUT OBESITY
With 2 subgroups:
* Man without obesity
* Women without obesity
No interventions assigned to this group
OBESITY
With 2 subgroups
* Man with obesity
* Women with obesity
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
* Men and women \>20 years old.
* Scheduled for surgical intervention to extract adipose tissue.
* Signed informed consent for study participation.
* Non-obesity-related systemic diseases (cancer, severe kidney/liver disease).
* Systemic diseases with intrinsic inflammation (rheumatoid arthritis, Crohn's disease, asthma, chronic infections (HIV/tuberculosis)) or any type of infectious disease.
* Pregnant/breastfeeding women.
* Persons under legal/administrative restrictions.
* Those with infection symptoms in the past month.
* Use of antibiotics/antifungals/antivirals (previous 3 months).
* Chronic steroidal/anti-inflammatory drug use.
* Major psychiatric history.
* Excessive alcohol intake, acute or chronic (\>40g/day (women), \>80g/day (men)) or drug abuse.
* Immunosuppressants treatment.
* Participants with severe eating disorders.
* Serum liver enzymes (GOT, GPT) above twice the upper limit of normal. Obvious signs or symptoms of liver disease, acute or chronic hepatitis.
* History of iron balance disorders (e.g., genetic hemochromatosis, hemosiderosis from any cause, atransferrinemia, paroxysmal nocturnal hemoglobinuria).
* Creatinine greater than 1.2 and glomerular filtration rate below 40.
* Current treatment for malignant neoplasia, other than basal cell or squamous cell skin cancer.
* Heart disease classified as class III or IV, known ischemic cardiovascular disease.
* Renal failure, history of kidney transplant, or current dialysis treatment.
* Chronic constipation (bowel movement frequency ≥ 7 days) .
* Scheduled for surgical intervention to extract adipose tissue.
* Signed informed consent for study participation.
* Non-obesity-related systemic diseases (cancer, severe kidney/liver disease).
* Systemic diseases with intrinsic inflammation (rheumatoid arthritis, Crohn's disease, asthma, chronic infections (HIV/tuberculosis)) or any type of infectious disease.
* Pregnant/breastfeeding women.
* Persons under legal/administrative restrictions.
* Those with infection symptoms in the past month.
* Use of antibiotics/antifungals/antivirals (previous 3 months).
* Chronic steroidal/anti-inflammatory drug use.
* Major psychiatric history.
* Excessive alcohol intake, acute or chronic (\>40g/day (women), \>80g/day (men)) or drug abuse.
* Immunosuppressants treatment.
* Participants with severe eating disorders.
* Serum liver enzymes (GOT, GPT) above twice the upper limit of normal. Obvious signs or symptoms of liver disease, acute or chronic hepatitis.
* History of iron balance disorders (e.g., genetic hemochromatosis, hemosiderosis from any cause, atransferrinemia, paroxysmal nocturnal hemoglobinuria).
* Creatinine greater than 1.2 and glomerular filtration rate below 40.
* Current treatment for malignant neoplasia, other than basal cell or squamous cell skin cancer.
* Heart disease classified as class III or IV, known ischemic cardiovascular disease.
* Renal failure, history of kidney transplant, or current dialysis treatment.
* Chronic constipation (bowel movement frequency ≥ 7 days) .
Minimum Eligible Age
20 Years
Eligible Sex
ALL
Accepts Healthy Volunteers
No
Sponsors
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Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta
OTHER
Sponsor Role
lead
Responsible Party
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José Manuel Fernández-Real
Principal investigator, clinical professor, section chief of Endocrinology and Nutrition Department of Josep Trueta University Hospital
Responsibility Role
PRINCIPAL_INVESTIGATOR
Principal Investigators
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José Manuel Fernández-Real, M.D., Ph.D.
Role: PRINCIPAL_INVESTIGATOR
Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta
Locations
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Institut d'Investigació Biomèdica de Girona (IDIBGI)
Girona, Girona, Spain
Site Status
RECRUITING
Countries
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Spain
Central Contacts
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Facility Contacts
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References
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Other Identifiers
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POINSETTIA-2024.200
Identifier Type: -
Identifier Source: org_study_id
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