- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07656532
Polyphenol Intake, Mediterranean Diet Adherence, and Oxidative Stress in Pregnancy (PREGPOLY)
Effect of Polyphenol Intake and Adherence to the Mediterranean Diet on Oxidative Stress During Pregnancy
This study is a randomized controlled clinical trial designed to evaluate the effect of a polyphenol-rich dietary intervention during pregnancy on endothelial function, oxidative stress biomarkers, and maternal and neonatal outcomes.
Pregnancy is associated with metabolic and vascular adaptations, and complications such as gestational diabetes and hypertensive disorders are linked to endothelial dysfunction and increased oxidative stress. Dietary factors, particularly adherence to the Mediterranean diet and intake of polyphenol-rich foods, may play a protective role.
Pregnant women will be randomly assigned to either an intervention group or a control group. The intervention consists of daily consumption of 10 g of natural non-alkalized cocoa and structured dietary counseling aimed at achieving at least five daily servings of fruits and vegetables, alongside general Mediterranean diet recommendations.
The intervention will last 12 weeks, from early to mid-pregnancy. Biomarkers of endothelial function and oxidative stress will be measured at different time points, along with clinical maternal outcomes (including gestational diabetes and hypertensive disorders) and neonatal outcomes.
The aim is to determine whether this dietary intervention improves endothelial function, reduces oxidative stress, and contributes to better pregnancy outcomes.
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Ana García Albarrán, RN, Midwife
- Numero di telefono: 923291100
- Email: annagarcialbarran@usal.es
Backup dei contatti dello studio
- Nome: María Begoña Ayuda Durán, PharmD
- Numero di telefono: +34 923 294 537
- Email: bego_ayuda@usal.es
Luoghi di studio
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SALAMANCA
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Salamanca, SALAMANCA, Spagna, 37007
- Hospital de Salamanca
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Contatto:
- Ana García Albarrán, RN, Midwife
- Numero di telefono: 923291100
- Email: annagarcialbarran@usal.es
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
Inclusion Criteria:
- Pregnant women aged 18 years or older.
- Singleton pregnancy.
- Gestational age between 8 and 11 weeks at enrollment.
- Receiving prenatal care within the Salamanca Health Area.
- Able to understand the study information and provide written informed consent.
- No clinical restrictions that would contraindicate dietary modifications.
Exclusion Criteria:
- Medical or obstetric conditions that contraindicate dietary modifications.
- Active metabolic, renal, or hepatic disease.
- Severe hyperemesis gravidarum or gastrointestinal disorders limiting food intake.
- Allergy or intolerance to cocoa.
- Habitual high cocoa or chocolate consumption (>30 g/day).
- Multiple pregnancy.
- Severe obstetric complications diagnosed before enrollment.
- Inability to comply with study procedures, attend follow-up visits, or communication barriers that could interfere with participation.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Prevenzione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Separare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
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Sperimentale: Intervention Group
Participants will receive a daily dietary intervention consisting of 10 g of natural non-alkalized cocoa and structured nutritional counseling aimed at achieving at least five daily servings of fruits and vegetables, in addition to general Mediterranean diet recommendations.
The intervention will last 12 weeks during pregnancy.
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Structured nutritional counseling aimed at achieving at least five daily servings of fruits and vegetables and improving adherence to the Mediterranean diet.
Structured nutritional counseling aimed at achieving at least five daily servings of fruits and vegetables and improving adherence to the Mediterranean diet.
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Comparatore attivo: Control Group
Participants will receive standard dietary advice based on general healthy eating and Mediterranean diet recommendations during pregnancy, without specific supplementation or structured dietary intervention.
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Structured nutritional counseling aimed at achieving at least five daily servings of fruits and vegetables and improving adherence to the Mediterranean diet.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Change in serum sVCAM-1 concentration
Lasso di tempo: Baseline, 24-28 weeks, and 32-36 weeks of gestation
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Change in serum soluble vascular cell adhesion molecule-1 (sVCAM-1) levels from baseline to 24-28 weeks of gestation, measured in [ng/mL].
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Baseline, 24-28 weeks, and 32-36 weeks of gestation
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Change in serum sFlt-1/PlGF ratio
Lasso di tempo: Baseline, 24-28 weeks of gestation, and 32-36 weeks of gestation.
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Change in the soluble fms-like tyrosine kinase-1 to placental growth factor (sFlt-1/PlGF) ratio from baseline to 24-28 weeks and 32-36 weeks of gestation.
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Baseline, 24-28 weeks of gestation, and 32-36 weeks of gestation.
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Change in serum nitric oxide concentration
Lasso di tempo: Baseline, 24-28 weeks, and 32-36 weeks of gestation.
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Change in serum nitric oxide (NO) concentration from baseline to 24-28 weeks and 32-36 weeks of gestation, measured in [pg/mL].
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Baseline, 24-28 weeks, and 32-36 weeks of gestation.
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Change in serum IL-6 concentration
Lasso di tempo: Baseline, 24-28 weeks, and 32-36 weeks of gestation
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Change in circulating interleukin-6 levels between baseline and follow-up assessments, measured in [pg/mL].
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Baseline, 24-28 weeks, and 32-36 weeks of gestation
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Change in Mediterranean Diet Adherence Screener (MEDAS) score
Lasso di tempo: Baseline, 24-28 weeks of gestation, and 32-36 weeks of gestation.
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Change in adherence to the Mediterranean diet measured using the Mediterranean Diet Adherence Screener (MEDAS).
Scores range from 0 to 14, with higher scores indicating greater adherence to the Mediterranean diet.
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Baseline, 24-28 weeks of gestation, and 32-36 weeks of gestation.
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Altre misure di risultato
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Incidence of gestational diabetes mellitus
Lasso di tempo: 24-28 weeks of gestation.
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Occurrence of gestational diabetes mellitus diagnosed according to standard clinical criteria and routine screening procedures during pregnancy.
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24-28 weeks of gestation.
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Incidence of gestational hypertension
Lasso di tempo: From enrollment until delivery.
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Occurrence of gestational hypertension diagnosed according to standard clinical criteria during pregnancy.
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From enrollment until delivery.
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Incidence of preeclampsia
Lasso di tempo: From enrollment until delivery.
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Occurrence of preeclampsia diagnosed according to standard clinical criteria during pregnancy.
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From enrollment until delivery.
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Gestational age at delivery
Lasso di tempo: At delivery.
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Gestational age at the time of delivery measured in completed weeks of gestation.
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At delivery.
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Neonatal birth weight
Lasso di tempo: At delivery.
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Neonatal birth weight measured in grams.
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At delivery.
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Apgar score at 1 minute
Lasso di tempo: At delivery.
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Neonatal condition assessed using the Apgar score at 1 minute after birth.
Scores range from 0 to 10, with higher scores indicating better neonatal condition.
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At delivery.
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Apgar score at 5 minutes
Lasso di tempo: At delivery.
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Neonatal condition assessed using the Apgar score at 5 minutes after birth.
Scores range from 0 to 10, with higher scores indicating better neonatal condition.
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At delivery.
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Apgar score at 10 minutes
Lasso di tempo: At delivery.
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Neonatal condition assessed using the Apgar score at 10 minutes after birth.
Scores range from 0 to 10, with higher scores indicating better neonatal condition.
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At delivery.
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Neonatal intensive care unit admission
Lasso di tempo: At delivery
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Proportion of newborns requiring admission to the neonatal intensive care unit (NICU).
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At delivery
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Ana García Albarrán, RN, Midwife, University of Salamanca
- Direttore dello studio: Susana González Manzano, PharmD, University of Salamanca
- Direttore dello studio: María Begoña Ayuda Durán, PharmD, University of Salamanca
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie urogenitali
- Malattie del sistema endocrino
- Malattie vascolari
- Malattia cardiovascolare
- Malattie urogenitali femminili e complicanze della gravidanza
- Malattie metaboliche
- Complicazioni della gravidanza
- Disturbi del metabolismo del glucosio
- Diabete mellito
- Ipertensione
- Malattie nutrizionali e metaboliche
- Diabete, gestazionale
- Preeclampsia
- Ipertensione, indotta dalla gravidanza
Altri numeri di identificazione dello studio
- USAL-CT-2026-001
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Descrizione del piano IPD
At present, there is no finalized plan for sharing individual participant data (IPD). Due to the sensitive nature of maternal and neonatal health data and the presence of biological and clinical information, data sharing will be considered in accordance with institutional ethics requirements, participant consent, and applicable data protection regulations.
Any potential future sharing of de-identified data will be determined after study completion and in line with publication and regulatory requirements.
Informazioni su farmaci e dispositivi, documenti di studio
Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti
Studia un dispositivo regolamentato dalla FDA degli Stati Uniti
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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