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Cambios en el procesamiento sensorial de las señales olfativas inducidos por el nacimiento en ovejas
K M Kendrick1, F Lévy, E B Keverne
1Agricultural and Food Research Council, Institute of Animal Physiology and Genetics Research, Babraham, Cambridge, United Kingdom.
Resumen
Después del nacimiento, ovejas.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Procesamiento olfativo y procesamiento olfativo.
- Comportamiento animal Comportamiento animal.
Sus antecedentes:
- El vínculo materno en ovejas y otras especies se basa en señales olfativas para el reconocimiento de la descendencia.
- La actividad neural del bulbo olfativo y la liberación de neurotransmisores se ven mínimamente afectadas por los olores de cordero antes del nacimiento.
Objetivo del estudio:
- Investigar los cambios neurales y neuroquímicos en el bulbo olfativo después del parto que facilitan el reconocimiento selectivo de la descendencia.
- Comprender el papel de los neurotransmisores en el procesamiento de los olores olfativos del cordero después del nacimiento.
Principales métodos:
- Registros electrofisiológicos en el bulbo olfativo.
- La medición de la liberación de neurotransmisores (colinérgico, noradrenérgico, glutamato, GABA).
- Análisis de la actividad neuronal en respuesta a los olores de cordero antes y después del nacimiento.
Principales resultados:
- Después del nacimiento, hay un mayor número de células mitrales del bulbo olfativo que responden a los olores de cordero.
- El aumento de la liberación de neurotransmisores colinérgicos y noradrenérgicos se produce después del nacimiento.
- El reconocimiento selectivo de cordero se correlaciona con una mayor actividad de células mitrales específicas y una liberación alterada de glutamato y GABA en las sinapsis dendrodendríticas.
Conclusiones:
- El bulbo olfativo sufre cambios neuroplásticos significativos después del nacimiento para permitir el reconocimiento selectivo de la descendencia.
- El aumento de la eficacia de la liberación de ácido gamma-aminobutírico (GABA) evocado por el glutamato juega un papel en el refinamiento del procesamiento olfativo para el enlace materno.
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