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

27 de mayo de 2015 actualizado por: Clinica Universidad de Navarra, Universidad de Navarra

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.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

103

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

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

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

20 años a 45 años (Adulto)

Acepta Voluntarios Saludables

Géneros elegibles para el estudio

Femenino

Descripción

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)

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Triple

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador de placebos: 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).
Experimental: 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).
Experimental: 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).
Experimental: 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).

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Weight Loss
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: Week 0 (baseline)
Fasting serum glucose, Fasting serum insulin, Oral Glucose Tolerance Test, HOMA index
Week 0 (baseline)
Glucose metabolism parameters
Periodo de tiempo: 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
Periodo de tiempo: Week 0 (baseline)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 0 (baseline)
Lipid metabolism biomarkers
Periodo de tiempo: Week 10 (end of treatment)
Serum total-cholesterol, HDL-cholesterol, LDL-cholesterol, triacylglycerols, free fatty acids, ketone bodies.
Week 10 (end of treatment)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Blood Pressure and Cardiovascular Risk biomarkers
Periodo de tiempo: Baseline
Blood pressure, PAI-1 and VEGF will be measured.
Baseline
Blood Pressure and Cardiovascular Risk biomarkers
Periodo de tiempo: Week 10 (end of treatment)
Blood pressure, PAI-1 and VEGF will be measured.
Week 10 (end of treatment)
Energy expenditure
Periodo de tiempo: Baseline
Energy expenditure will be estimated by indirect calorimetry, and T3, T4 and TSH levels will be analysed by ELISA kits
Baseline
Energy expenditure
Periodo de tiempo: 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
Periodo de tiempo: Baseline
Satiety will be estimated by using a VAS questionnaire
Baseline
Satiety
Periodo de tiempo: Week 10 (end of treatment)
Satiety will be estimated by using a VAS questionnaire
Week 10 (end of treatment)
Serum inflammation biomarkers
Periodo de tiempo: Baseline
TNF-alpha, IL-6, C-reactive protein, serum A-amiloid, Leptin, Adiponectin, Visfatin
Baseline
Serum inflammation biomarkers
Periodo de tiempo: 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
Periodo de tiempo: Baseline
Total and Reduced Glutathione, Glutathione Peroxidase, MDA, Superoxide Dismutase-2 (Mn-SOD).
Baseline
Serum oxidative stress biomarkers
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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
Periodo de tiempo: 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)

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Investigadores

  • Investigador principal: Maria J Moreno-Aliaga, PhD, University of Navarra
  • Director de estudio: Alfredo Martínez, PhD, University of Navarra

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Publicaciones Generales

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de enero de 2010

Finalización primaria (Actual)

1 de diciembre de 2011

Finalización del estudio (Actual)

1 de diciembre de 2012

Fechas de registro del estudio

Enviado por primera vez

21 de mayo de 2010

Primero enviado que cumplió con los criterios de control de calidad

4 de junio de 2010

Publicado por primera vez (Estimar)

7 de junio de 2010

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

28 de mayo de 2015

Última actualización enviada que cumplió con los criterios de control de calidad

27 de mayo de 2015

Última verificación

1 de febrero de 2012

Más información

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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