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Does a high intake of fruit in a dietary intervention study help counteract DNA hypomethylation changes brought on by cigarette smoking?

Influence of frequent fruit consumption on changes in the methylation of hypomethylated CpG sites by tobacco exposure: A randomized controlled clinical trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN98067546
Enrollment
30
Registered
2022-12-15
Start date
2022-12-21
Completion date
Unknown
Last updated
2023-01-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

General population (smokers and non-smokers) Not Applicable

Interventions

In this randomized and controlled cross-over trial, the same person will receive both interventions (randomly allocated using the appropriate online tool to receive fruit or the control group). The in

Sponsors

University of Valencia
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. White European subjects (men and women) recruited from the Mediterranean population 2. Age ranging from 18 to 75 years old 3. BMI <40 Kg/m2

Exclusion criteria

Exclusion criteria: 1. Diabetic subjects 2. Other chronic diseases (cardiovascular, cancer, respiratory diseases, liver diseases, kidney diseases, etc) 3. Subjects with food allergies or food intolerances 4. Alcohol abuse or addiction 5. Immunodeficiency, HIV-positive status, COVID-19 positive status or other acute infections 6. Serious psychiatric disorders: schizophrenia, bipolar disease, eating disorders, depression, etc 7. Any severe co-morbid condition 8. History of major organ transplantation 9. Concurrent therapy with immunosuppressive drugs or cytotoxic agents 10. Current treatment with systemic corticosteroids 11. Current use of weight loss medication 12. Any other condition that may interfere with the completion of the study protocol

Design outcomes

Primary

MeasureTime frame
Comparative methylation profiles (% of DNA-methylated cytosines) in DNA isolated from blood leukocytes measured using arrays and for selected CpG sites by Massarray, according to the standard protocols, at baseline and after one week of the corresponding intervention (frequent consumption of provided fruit or control group without the supplied fruit). DNA will be isolated by standard procedures and quality control measures will be carried out.

Secondary

MeasureTime frame
1. Plasma glucose and biochemical parameters (lipids) measured using standard procedures at baseline and after one-week interventions in both groups 2. Height, weight, waist circumference and body composition by bioimpedance measured using validated methods at baseline and after one-week interventions 3. Blood pressure and heart rate measured using standard protocols at baseline and after one-week interventions in both groups 4. Analysis of differential methylation pathways in the whole sample and by sex measured using computer tools 5. Food intake measured using food frequency questionnaires and adherence to the Mediterranean diet measured using a validated scale at baseline 6. Sleep duration, sleep quality and chronotype measured using the Horne and Östberg questionnaire at baseline 7. Additional analysis (depending on the budget) of plasma metabolites (lipids, amino acids, inflammatory markers measured using a standard high-throughput nuclear magnetic resonance metabolomics platform) at baseline and after the one week of the interventions 8. The habit of tobacco consumption will be self-reported by the participants themselves, at baseline and one week for each intervention

Countries

Spain

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026