Questa pagina è stata tradotta automaticamente e l'accuratezza della traduzione non è garantita. Si prega di fare riferimento al Versione inglese per un testo di partenza.

Effects of Lipoic Acid and Eicosapentaenoic Acid (EPA) in Human Obesity (OBEPALIP)

Cellular and Molecular Effects of Lipoic Acid and Eicosapentaenoic Acid (EPA) on Adipose Tissue: Potential Application in Human Obesity

The aim of the study is to analyze the effects of Lipoic acid and/or EPA supplementation on weight loss, lipid profile, insulin resistance, oxidative and inflammation parameters, metabolomic profile as well as on adipose tissue gene profile in healthy overweight/obese subjects following an energy-restricted diet.

Panoramica dello studio

Tipo di studio

Interventistico

Iscrizione (Effettivo)

103

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

    • Navarra
      • Pamplona, Navarra, Spagna, 31008
        • Department of Nutrition, Food Science, Physiology and Toxicology. University of Navarra

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

Da 20 anni a 45 anni (Adulto)

Accetta volontari sani

Sessi ammissibili allo studio

Femmina

Descrizione

Inclusion Criteria:

  • Women
  • Ages between 20 and 45 years, and with regular menstrual cycles
  • Body Mass Index (BMI) between 27.5 and 39.9 kg/m2
  • Weight unchanged (± 3 kg) for the last 3 months
  • All subjects should have an overall physical and psychological condition that the investigator believes is in accordance with the overall aim of the study.

Exclusion Criteria:

  • Use of prescription medication
  • To suffer from any chronic metabolic or obesity related disease, hepatic or renal systemic disease: Hypertension, dislipidemia, type 1 or 2 diabetes, thyroid function disorders, cirrhosis, fatty liver, etc.
  • Food allergies or food intolerance expected to come up during the study
  • Special diets (Atkins, vegetarian, etc.) prior three months the start of the study.
  • Eating disorders
  • Surgically treated obesity
  • Pregnant or lactating women or planning to be pregnant in the next two months
  • Alcohol or drug abuse (based on clinical parameters)

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Triplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore placebo: Control group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + placebos supplements
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
Sperimentale: EPA group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + EPA (1.3 g/day, 3 capsules of 433 mg/day) supplement (EPA Group).
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
Sperimentale: Lipoic acid group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + LA (300 mg/day, 3 capsules of 100 mg/day) supplement (LA Group)
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).
Sperimentale: EPA+LA group
Dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline + EPA/LA (1.3 g /day and 300 mg/day respectively).
Placebo-controlled dietary intervention during 10 weeks. All groups will have a dietary treatment with a calorie restriction of 30 % the subject's energy expenditure at baseline, supplemented with eicosapentaenoic acid (EPA) and/or lipoic acid (LA).

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Weight Loss
Lasso di tempo: Week 0 (baseline)
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 0 (baseline)
Weight Loss
Lasso di tempo: Week 2
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 2
Weight Loss
Lasso di tempo: Week 4
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 4
Weight Loss
Lasso di tempo: week 6
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
week 6
Weight Loss
Lasso di tempo: Week 8
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 8
Weight Loss
Lasso di tempo: Week 10 (end of treatment)
Volunteers will attend the Nutritional Intervention unit (University of Navarra), where their weight will be measured to the nearest 0.1 kg.
Week 10 (end of treatment)
Body composition and Anthropometric parameters
Lasso di tempo: Week 0 (Baseline)
Changes in body composition will be analyzed by Dual X-ray Absorptiometry (DXA) and by bioimpedance, and hip and waist circumferences will be measured.
Week 0 (Baseline)
Body composition and anthropometric parameters
Lasso di tempo: Week 10 (end of treatment)
Changes in body composition will be analyzed by Dual X-ray Absorptiometry (DXA) and by bioimpedance, and hip and waist circumferences will be measured.
Week 10 (end of treatment)
Glucose metabolism parameters
Lasso di tempo: Week 0 (baseline)
Fasting serum glucose, Fasting serum insulin, Oral Glucose Tolerance Test, HOMA index
Week 0 (baseline)
Glucose metabolism parameters
Lasso di tempo: Week 10 (end of treatment)
Fasting serum glucose, Fasting serum insulin, Oral Glucose Tolerance Test, HOMA index
Week 10 (end of treatment)
Lipid metabolism biomarkers
Lasso di tempo: Week 0 (baseline)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 0 (baseline)
Lipid metabolism biomarkers
Lasso di tempo: Week 10 (end of treatment)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 10 (end of treatment)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Blood Pressure and Cardiovascular Risk biomarkers
Lasso di tempo: Baseline
Blood pressure, PAI-1 and VEGF will be measured.
Baseline
Blood Pressure and Cardiovascular Risk biomarkers
Lasso di tempo: Week 10 (end of treatment)
Blood pressure, PAI-1 and VEGF will be measured.
Week 10 (end of treatment)
Energy expenditure
Lasso di tempo: Baseline
Energy expenditure will be estimated by indirect calorimetry, and T3, T4 and TSH levels will be analysed by ELISA kits
Baseline
Energy expenditure
Lasso di tempo: Week 10 (end of treatment)
Energy expenditure will be estimated by indirect calorimetry, and T3, T4 and TSH levels will be analysed by ELISA kits
Week 10 (end of treatment)
Satiety
Lasso di tempo: Baseline
Satiety will be estimated by using a VAS questionnaire
Baseline
Satiety
Lasso di tempo: Week 10 (end of treatment)
Satiety will be estimated by using a VAS questionnaire
Week 10 (end of treatment)
Serum inflammation biomarkers
Lasso di tempo: Baseline
TNF-alpha, IL-6, C-reactive protein, serum A-amiloid, Leptin, Adiponectin, Visfatin
Baseline
Serum inflammation biomarkers
Lasso di tempo: Week 10 (end of treatment)
TNF-alpha, IL-6, C-reactive protein, serum A-amiloid, Leptin, Adiponectin, Visfatin
Week 10 (end of treatment)
Serum oxidative stress biomarkers
Lasso di tempo: Baseline
Total and Reduced Glutathione, Glutathione Peroxidase, MDA, Superoxide Dismutase-2 (Mn-SOD).
Baseline
Serum oxidative stress biomarkers
Lasso di tempo: Week 10 (end of treatment)
Total and Reduced Glutathione, Glutathione Peroxidase, MDA, Superoxide Dismutase-2 (Mn-SOD).
Week 10 (end of treatment)
Adipose tissue gene profile and function analysis
Lasso di tempo: Week 10 (end of treatment)
A biopsy (2 g) of subcutaneous abdominal periumbilical area adipose tissue will be obtained. In order to identify clusters/pathways of genes regulated by the supplementation of EPA and LA, microarray gene profiling will be performed in adipose tissue from the 4 groups after the nutritional intervention. If possible primary explant culture of adipose tissue biopsies will be also carried out.
Week 10 (end of treatment)
Metabolomic and lipidomic profile
Lasso di tempo: Baseline
Samples of plasma and 24-h urine will be analysed by Ultra Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS), and Nuclear Magnetic Resonance (NMR), and Bidimensional Gas Chromatography-Mass Spectrometry (BC-MS).
Baseline
Metabolomic and lipidomic profile
Lasso di tempo: Week 10 (end of treatment)
Samples of plasma and 24-h urine will be analysed by Ultra Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS), and Nuclear Magnetic Resonance (NMR), and Bidimensional Gas Chromatography-Mass Spectrometry (BC-MS).
Week 10 (end of treatment)

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Investigatori

  • Investigatore principale: Maria J Moreno-Aliaga, PhD, University of Navarra
  • Direttore dello studio: Alfredo Martínez, PhD, University of Navarra

Pubblicazioni e link utili

La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.

Pubblicazioni generali

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 gennaio 2010

Completamento primario (Effettivo)

1 dicembre 2011

Completamento dello studio (Effettivo)

1 dicembre 2012

Date di iscrizione allo studio

Primo inviato

21 maggio 2010

Primo inviato che soddisfa i criteri di controllo qualità

4 giugno 2010

Primo Inserito (Stima)

7 giugno 2010

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Stima)

28 maggio 2015

Ultimo aggiornamento inviato che soddisfa i criteri QC

27 maggio 2015

Ultimo verificato

1 febbraio 2012

Maggiori informazioni

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 .

Sottoscrivi