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Hormonal Regulation of Body Weight Maintenance

12 de enero de 2018 actualizado por: Professor Joachim Spranger, Charite University, Berlin, Germany
The investigators here propose to perform a collaborative clinical research effort including a randomized controlled trial investigating the mechanisms of weight maintenance and their relation to a lifestyle intervention in children, adolescents and adults. The detailed investigation and analysis of the variability and dynamics of the endocrine circuits responding to a negative energy balance and weight loss will be accompanied and enhanced by specific clinical projects targeting peripheral and central-nervous aspects of hormonal counter-regulation after weight loss. Mechanisms of endocrine counter-regulation and potential therapeutic approaches will be studied.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

286

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

      • Berlin, Alemania, 12200
        • Charité

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

10 años a 90 años (Niño, Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria:

  • BMI > 27 kg/m2 (adults)

Exclusion Criteria:

  • weight loss of more than 5kg in the last 2 months
  • pregnancy, breastfeeding
  • patients with:

    • severe heart failure
    • impaired hepatic or renal function
    • anaemia
    • disturbed coagulation (biopsies will not be taken in those subjects)
    • infection, malabsorption
    • severe hypertension
    • cancer within the last 5 years
    • eating disorders or any other psychiatric condition that would interact with the trial intervention
    • any other endocrine disorder
  • changes of smoking habits or diets within the last 3 months prior to study inclusion

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: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Comparador de placebos: placebo
Placebo
sin intervención, solo seguimiento
Experimental: lifestyle intervention
After an initial weight loss, the weight regain will be measured during multimodal lifestyle intervention in children, adolescents and adults
After an initial weight loss, the weight regain will be measured during multimodal lifestyle intervention in children, adolescents and adults

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
BMI will be assessed during lifestyle intervention in (1) children and adolescents and (2) adults vs. placebo
Periodo de tiempo: 21 months
BMI (kg/m2) will be analyzed after intentional weight loss in two comparable parts of a randomized controlled trial including (1) children and adolescents and (2) adults. Therefore effects of a multimodal lifestyle intervention will be compared to placebo.
21 months

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Evaluation of leptin during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of leptin at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of leptin during follow up
Periodo de tiempo: 48 months
Measurement of leptin during follow up until the 48 months
48 months
Evaluation of catecholamines during follow up
Periodo de tiempo: 48 months
Measurement of catecholamines during follow up until the 48 months
48 months
Evaluation of catecholamines during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of catecholamines at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of cortisol during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of cortisol at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of cortisol during follow up
Periodo de tiempo: 48 months
Measurement of cortisol during follow up until the 48 months
48 months
Evaluation of glucagon-like peptide 1 (GLP1) during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of GLP1 at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of GLP1 during follow up
Periodo de tiempo: 48 months
Measurement of GLP1 during follow up until the 48 months
48 months
Evaluation of glucose-dependent insulinotropic polypeptide (GIP) during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of GIP at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of GIP during follow up
Periodo de tiempo: 48 months
Measurement of GIP during follow up until the 48 months
48 months
Evaluation of thyroid hormones during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of thyroid hormones at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of thyroid hormones during follow up
Periodo de tiempo: 48 months
Measurement of thyroid hormones during follow up until the 48 months
48 months
Evaluation of insulin during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of insulin at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of insulin during follow up
Periodo de tiempo: 48 months
Measurement of insulin during follow up until the 48 months
48 months
Evaluation of insulin-like growth factor 1 (IGF1) during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of IGF1 at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of IGF1 during follow up
Periodo de tiempo: 48 months
Measurement of IGF1 during follow up until the 48 months
48 months
Evaluation of natriuretic peptide during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18
Measurement of natriuretic peptide at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and after additional 6 months follow up
month -3, month 0, month 12, month 18
Evaluation of natriuretic peptide during follow up
Periodo de tiempo: 48 months
Measurement of natriuretic peptide during follow up until the 48 months
48 months
Evaluation of blood pressure during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18, month 24, month 36, month 48
Measurement of blood pressure at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month -3, month 0, month 12, month 18, month 24, month 36, month 48
Evaluation of free fatty acids (FFAs) during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18, month 24, month 36, month 48
Measurement of FFAs at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month -3, month 0, month 12, month 18, month 24, month 36, month 48
Evaluation of respiratory coefficient during lifestyle intervention
Periodo de tiempo: month -3, month 0, month 12, month 18, month 24, month 36, month 48
Measurement of respiratory coefficient at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month -3, month 0, month 12, month 18, month 24, month 36, month 48
Measurement of messenger ribonucleic acid (mRNA) changes in adipose and skeletal muscle before (T-3), after weight loss (T0) and after as well as after 12 months randomized lifestyle intervention (or placebo)
Periodo de tiempo: month -3, month 0, month 12
Measurement of systemic and tissue specific changes in adipose tissue and skeletal muscle using RNA sequencing (counts)
month -3, month 0, month 12
Measurement of insulin sensitivity
Periodo de tiempo: month -3, month 0, month 12
Measurement of systemic and tissue specific changes in adipose and muscle insulin sensitivity using hyperinsulinemic clamp (mg•kg-1•min-1/(mU•L-1)) before (T-3), after weight loss (T0) and after as well as after 12 months randomized lifestyle intervention (or placebo)
month -3, month 0, month 12
Prediction of body weight regain
Periodo de tiempo: month 18, month 48
No additional measurement will be done. However, we will analyse the predictive impact of already measured parameters on long-term course of BMI (18 and 48 months) using mathematical models
month 18, month 48
Prediction of insulin sensitivity
Periodo de tiempo: month 18, month 48
No additional measurement will be done. However, we will analyse the predictive impact of already measured parameters on insulin sensitivity (18 and 48 months) using mathematical models
month 18, month 48
Prediction of energy expenditure
Periodo de tiempo: month 18, month 48
No additional measurement will be done. However, we will analyse the predictive impact of already measured parameters on energy expenditure (18 and 48 months) using mathematical models
month 18, month 48
Prediction of muscle mass
Periodo de tiempo: month 18, month 48
No additional measurement will be done. However, we will analyse the predictive impact of already measured parameters on muscle mass (18 and 48 months) using mathematical models
month 18, month 48
Prediction of fat mass
Periodo de tiempo: month 18, month 48
No additional measurement will be done. However, we will analyse the predictive impact of already measured parameters on fat mass (18 and 48 months) using mathematical models
month 18, month 48
BMI course after a lifestyle intervention in (1) children and adolescents and (2) adults vs. placebo
Periodo de tiempo: month 24, month 36, month 48
BMI (kg/m2) after the randomized control trial (RCT) (18 months) will be analyzed up to 48 months.
month 24, month 36, month 48
changes of fatty acids during the intervention
Periodo de tiempo: month -3, month 0, month 12, month 18, month 24, month 36, month 48
Analysis of fatty acids at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month -3, month 0, month 12, month 18, month 24, month 36, month 48
changes acylcarnitines
Periodo de tiempo: month -3, month 0
Analysis of acylcarnitines at baseline and after 3 months of weight loss
month -3, month 0
changes acylcarnitines
Periodo de tiempo: month 12, month 18, month 24, month 36, month 48
Analysis of acylcarnitines after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month 12, month 18, month 24, month 36, month 48
body composition
Periodo de tiempo: month -3, month 0, month 12, month 18, month 24, month 36, month 48
Whole body fat mass (kg, %) will be measured at baseline, after 3 months of weight loss, as well as after 12 months randomized lifestyle intervention (or placebo) and and after additional 36 months follow up
month -3, month 0, month 12, month 18, month 24, month 36, month 48

Colaboradores e Investigadores

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

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 (Actual)

1 de enero de 2010

Finalización primaria (Actual)

1 de diciembre de 2015

Finalización del estudio (Actual)

1 de enero de 2016

Fechas de registro del estudio

Enviado por primera vez

17 de febrero de 2009

Primero enviado que cumplió con los criterios de control de calidad

24 de febrero de 2009

Publicado por primera vez (Estimar)

25 de febrero de 2009

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

17 de enero de 2018

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

12 de enero de 2018

Última verificación

1 de enero de 2018

Más información

Términos relacionados con este estudio

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

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. .

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