Neurobiological Bases of Paternal Nurturance
27 de abril de 2017 actualizado por: James K. Rilling, PhD
Biological Bases of Individual Variation in Paternal Nurturance
The overall goal of this project is to identify the genetic, hormonal, and neurobiological influences on paternal nurturing behavior and to determine if fathers' neural responses to infants can be modulated by neuropeptides known to play a role in parenting in experimental animal models.
The aim is to determine if pharmacological manipulation of central oxytocin (OT) and vasopressin (AVP) levels influences the neural response to viewing pictures of one's own infant or to hearing cry stimuli. In a double-blind procedure, fathers with 1-3 year old children will be scanned on two separate occasions; once under the influence of OT/AVP and once under the influence of placebo. Fathers will be randomized to either OT or AVP, and order of administration of drug and placebo will counterbalanced across subjects. Fathers will be scanned while viewing pictures of their own and an unknown child and while listening to unknown infant cry stimuli.
The investigators hypothesize:
- OT will augment the ventral tegmental area (VTA), ventral striatum and medial orbitofrontal cortex (mOFC) response to viewing pictures of one's own child, and will augment the primary auditory cortex (AI) response of fathers to infant cries.
- AVP will augment the lateral septum response to viewing own child pictures.
Descripción general del estudio
Estado
Terminado
Condiciones
Intervención / Tratamiento
Descripción detallada
30 fathers of children aged 1-3 will participate in two functional imaging sequence (fMRI) sessions, once under the influence of OT/AVP, and once under the influence of placebo.
Fathers will be restricted to men who are living with their biological child and an adult partner (male or female) that they are in a committed relationship with.
All fathers will receive two fMRI scans on two different occasions, separated by 2-10 days.
15 fathers will be randomized to intranasal OT, the other 15 will be randomized to intranasal AVP.
Within each drug group, the order of administration of drug and placebo will counterbalanced across subjects, such that 15 will receive OT/AVP first, and 15 will receive OT/AVP second.
During the fMRI scans, fathers will view pictures of their own and unknown children, as well as unknown adults.
Afterwards, while still in the scanner, they will listen to infant cry and control stimuli.
After exiting the scanner, fathers will again listen to the cry stimuli and will rate their emotional reaction to the cry stimuli on the following dimensions using a 7 point likert scale: irritated, sympathetic, alarmed, angry, upset, compassionate, distressed, annoyed, and tender.
Tipo de estudio
Intervencionista
Inscripción (Actual)
35
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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Georgia
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Atlanta, Georgia, Estados Unidos, 30307
- Emory University Hospital
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Atlanta, Georgia, Estados Unidos, 30322
- Emory University 1462 Clifton Rd
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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 y mayores (Adulto, Adulto Mayor)
Acepta Voluntarios Saludables
Sí
Géneros elegibles para el estudio
Todos
Descripción
Inclusion Criteria:
- above 18
- biological fathers of 1-3 year old infants who are currently cohabitating with the child's mother
- normal or corrected-to-normal vision of 20/40
Exclusion Criteria:
- current or past history of mental illness
- active medical or neurological disorder
- current or past history of alcohol or drug dependence
- claustrophobic (at the discretion of the PI with subject consultation)
- history of seizures or other neurological disorder
- history of hypertension, cardiovascular disease, nephritis, diabetes or other endocrine diseases or malignancy
- ferrous metal in any part of the body
- history of asthma or migraine headaches (can be included at the discretion of the study physician or nurse practitioner if episodes are infrequent and no active problems at time of study, not medicated)
- history of head trauma or psychiatric illness, as well as those who are receiving or have received over the past year, medication with known psychoactive effects (included at the discretion of the PI as these are exclusion criteria due to data quality concerns and not safety concerns; head trauma should be minimal enough deemed by the PI)
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: Aleatorizado
- Modelo Intervencionista: Asignación cruzada
- Enmascaramiento: Triple
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Experimental: OT + placebo
The OT + placebo group will self-administer no more than 1 ml solution of oxytocin or placebo in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays.
The order of administration of drug and placebo will counterbalanced across subjects, such that half will receive OT first, and half will receive OT second.
|
1 ml solution in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays
Otros nombres:
1 ml solution in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays
|
|
Experimental: AVP + placebo
The AVP + placebo group will self-administer no more than 1 ml solution of vasopressin or placebo in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays.
The order of administration of drug and placebo will counterbalanced across subjects, such that half will receive AVP first, and half will receive AVP second.
|
1 ml solution in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays
1 ml solution in each nostril; five (5) sprays per each nostril, for a total of ten (10) sprays
Otros nombres:
|
¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Mean Percent Signal Change in Ventral Tegmental Area (VTA)
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
Changes will be assessed in the OT group only per protocol.
|
Baseline, Visit 2 (Up to 10 days)
|
|
Mean Percent Signal Change in Right Ventral Striatum
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
Changes will be assessed in the OT group only per protocol.
|
Baseline, Visit 2 (Up to 10 days)
|
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Mean Percent Signal Change in Right Medial Orbitofrontal Cortex
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
Changes will be assessed in the OT group only per protocol.
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Baseline, Visit 2 (Up to 10 days)
|
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Mean Percent Signal Change in Caudate Nucleus
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
|
Baseline, Visit 2 (Up to 10 days)
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Mean Percent Signal Change in the Visual Cortex
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
|
Baseline, Visit 2 (Up to 10 days)
|
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Mean Percent Signal Change in the Anterior Cingulate Cortex
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
|
Baseline, Visit 2 (Up to 10 days)
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Change in Plasma Levels of Vasopressin (AVP)
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
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Peripheral levels of AVP will be assessed via assay of plasma collected.
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Baseline, Visit 2 (Up to 10 days)
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Change in Plasma Levels of Oxytocin (OT)
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
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Peripheral levels of OT will be assessed via assay of plasma collected.
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Baseline, Visit 2 (Up to 10 days)
|
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Difference in Cry Rating Scores Between OT and Placebo
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by analyzing the differences between ratings of infant cries under OT and placebo treatment on a 7-point likert scale.
Sixteen adjectives will be used to describe two different cries.
Participants will rate each cry from 1-7 where one represents "not at all" and 7 represents "extremely".
Difference is defined as OT minus placebo scores.
|
Baseline, Visit 2 (Up to 10 days)
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Difference in Cry Rating Scores Between AVP and Placebo
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by analyzing the differences between ratings of infant cries under AVP and placebo treatment on a 7-point likert scale.
Sixteen adjectives will be used to describe two different cries.
Participants will rate each cry from 1-7 where one represents "not at all" and 7 represents "extremely".
Difference is defined as AVP minus placebo scores.
|
Baseline, Visit 2 (Up to 10 days)
|
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Mean Percent Signal Change in Primary Auditory Cortex
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between OT treatment and placebo treatments (OT-PL) from functional magnetic resonance imaging (fMRI).
Changes will be assessed in the OT group only per protocol.
|
Baseline, Visit 2 (Up to 10 days)
|
|
Mean Percent Signal Change in Right Lateral Septum
Periodo de tiempo: Baseline, Visit 2 (Up to 10 days)
|
The effect of the drug will be assessed by determining changes in brain activation to own child pictures versus adult pictures (O-A) between AVP treatment and placebo treatments (AVP-PL) from functional magnetic resonance imaging (fMRI).
Changes will be assessed in the AVP group only per protocol.
|
Baseline, Visit 2 (Up to 10 days)
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: James K Rilling, Ph.D., Emory University
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
Enlaces Útiles
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 agosto de 2014
Finalización primaria (Actual)
1 de febrero de 2016
Finalización del estudio (Actual)
1 de febrero de 2016
Fechas de registro del estudio
Enviado por primera vez
20 de agosto de 2014
Primero enviado que cumplió con los criterios de control de calidad
20 de agosto de 2014
Publicado por primera vez (Estimar)
22 de agosto de 2014
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
5 de junio de 2017
Última actualización enviada que cumplió con los criterios de control de calidad
27 de abril de 2017
Última verificación
1 de abril de 2017
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- IRB00044782
- R21HD078778 (Subvención/contrato del NIH de EE. UU.)
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
No
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