Effect of High Caloric Diet on Brain Insulin Sensitivity and Inflammation
19 de mayo de 2020 actualizado por: University Hospital Tuebingen
Einfluss Von Hochkalorischer Nahrungsaufnahme Auf Die Insulinsensitivität Des Menschlichen Zentralnervensystems
Obesity if known to be associated with brain insulin resistance in humans and evidence is rapidly accumulating that brain insulin resistance influences peripheral metabolism, eating behavior and cognition. A reduced insulin response in the brain is found mainly in people with a metabolically unfavorable fat distribution - high visceral fat. Visceral fat produces inflammatory mediators and elevated inflammatory levels are closely linked to insulin resistance. Inflammation of the brain (i.e., neuroinflammation) has been proposed as a possible cause of brain insulin resistance. Interestingly, rodent models of a high calorie diet show that these inflammatory mechanisms occur rapidly in the brain, even prior to weight gain of the animals. Among other things, it has been shown in humans that a short-term increase in calories, especially carbohydrates and fats, reduces insulin sensitivity in the body and increases inflammatory parameters in the blood. Whether a high-calorie diet triggers insulin resistance or inflammation in the human brain is currently unknown.
Aim of study:
The aim of the study is to investigate the effects of a five-day high calorie diet in healthy young male volunteers on peripheral and brain insulin sensitivity as well as on eating behavior, mood and cognition. Brain insulin sensitivity, peripheral metabolism and different behavioral assessments will be evaluated before, 1 week and 2 weeks after high caloric diet.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Tipo de estudio
Intervencionista
Inscripción (Actual)
32
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
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Tübingen, Alemania, 72076
- University of Tuebingen, Department of Internal Medicine IV
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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
18 años a 29 años (Adulto)
Acepta Voluntarios Saludables
Sí
Géneros elegibles para el estudio
Masculino
Descripción
Inclusion Criteria:
BMI 19-24 kg/m2
- Non smoking
- normal glucose tolerance during 75g oral glucose tolerance test (OGTT)
- Exercise less than 2h per week
Exclusion Criteria:
- Vegetarians and Vegans
- Food allergies
- Working at night
- Professional Athletes
- Not removable metal parts in or on the body
- manifest cardiovascular disease
- claustrophobia
- recent surgery (less than 3 months)
- Simultaneous participation in other studies
- Acute disease or infection within the last 4 weeks
- neurological and psychiatric disorders
- treatment with centrally acting drugs
- hemoglobin Hb <13g / dl
- Hypersensitivity to any of the substances used
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: Ciencia básica
- Asignación: No aleatorizado
- Modelo Intervencionista: Asignación Secuencial
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Experimental: High caloric diet
Participants will eat 1500 kcal more than their usual diet for five days.
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After dietary counseling, subjects will receive high caloric snacks for five days.
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Sin intervención: Control diet
Participants will eat regular diet.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Change in brain insulin sensitivity
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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fMRI measurement will be performed before and after administration of 160 U of human insulin as nasal spray.
Changes in regional activity will be quantified to assess regional brain insulin sensitivity.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Change in quantitative proton density
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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The inflammatory processes in the brain will be measured through the quantification of the water content by means of proton density imaging.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Change in brain metabolites
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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The inflammatory processes in the brain will be measured through the determination of brain metabolites by MR spectroscopy
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Change in whole-body insulin sensitivity
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control diet will start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Insulin sensitivity will be estimated from a frequent-sampling 75 g oral glucose tolerance test using the Matsuda formula.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control diet will start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Change in body fat distribution
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Body composition will be addressed by whole-body MRI and liver MRS.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Behavioral assessment
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Memory function, food reward behavior and mood will be assessed by questionnaires, neuropsychological testing and a snack test.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Change in insulin secretion
Periodo de tiempo: Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Insulin secretion will be estimated from a frequent-sampling 75 g oral glucose tolerance test.
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Outcome measurements will be assessed at baseline (t0). Then, the 5-day high caloric diet or control dietwill start 5 to 30 days after t0. Outcome measurements will again be assessed on the 6th-7th day and on the 10th-15th day after start of diet.
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Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
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 (Actual)
13 de junio de 2018
Finalización primaria (Actual)
10 de marzo de 2020
Finalización del estudio (Actual)
10 de marzo de 2020
Fechas de registro del estudio
Enviado por primera vez
14 de junio de 2018
Primero enviado que cumplió con los criterios de control de calidad
5 de julio de 2018
Publicado por primera vez (Actual)
18 de julio de 2018
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
20 de mayo de 2020
Última actualización enviada que cumplió con los criterios de control de calidad
19 de mayo de 2020
Última verificación
1 de mayo de 2020
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 813/2017BO2
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
Descripción del plan IPD
We will not able to share individual participant data due to data protection restraints.
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
No
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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. .