Esta página ha sido traducida por una máquina. Otras páginas pueden seguir apareciendo en inglés. View in English

El sistema locus coeruleus-noradrenérgico en el cerebro sano y enfermo: una revisión narrativa

  • 04BRAIN, Department of Head and Skin, Ghent University, Ghent, Belgium.

|

|

Resumen

Este resumen es generado por máquina.

El locus coeruleus (LC) y el sistema de noradrenalina (NA) son vitales para la función cerebral, afectando la cognición y la fisiología. Su disfunción está vinculada a numerosos trastornos neurológicos y psiquiátricos, destacando su potencial terapéutico.

Área De La Ciencia

  • La neurociencia
  • La neuroanatomía
  • La neuroquímica

Sus Antecedentes

  • El locus coeruleus (LC) es un núcleo del tronco cerebral que produce noradrenalina (NA), crucial para la modulación de todo el SNC.
  • La disfunción del sistema LC-NA está implicada en varias afecciones neurológicas y psiquiátricas.

Objetivo Del Estudio

  • Proporcionar una revisión completa de la anatomía, la neuroquímica y la función del sistema LC-NA.
  • Explorar el papel del sistema LC-NA en cerebros sanos y enfermos, incluidos los trastornos neurológicos y psiquiátricos.
  • Para resaltar el sistema LC-NA como un objetivo terapéutico potencial.

Principales Métodos

  • Revisión narrativa de la literatura existente.
  • Visión general detallada de la conectividad LC (proyecciones aferentes y eferentes).
  • Discusión de la neuroquímica de la noradrenalina (síntesis, liberación y receptores).

Principales Resultados

  • El sistema LC-NA modula la atención, la excitación, el estrés, la emoción, el dolor, la memoria, el movimiento y la neuroprotección.
  • La desregulación de LC-NA está relacionada con trastornos psiquiátricos, disfunción cognitiva y enfermedades neurodegenerativas.
  • Las alteraciones en la señalización LC-NA contribuyen a la propagación de la epilepsia y las convulsiones.

Conclusiones

  • El sistema LC-NA es integral para la función cerebral, con amplias implicaciones para la salud y la enfermedad.
  • La comprensión de las funciones multifacéticas del sistema LC-NA es clave para desarrollar terapias dirigidas.
  • El sistema LC-NA representa un objetivo terapéutico significativo para los trastornos neurológicos y psiquiátricos.

Videos de Conceptos Relacionados

Neural Regulation 01:37

39.8K

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.

The cephalic phase is a conditioned or learned response to familiar foods. Our appetite or desire for a particular food modifies the preparatory responses directed by the brain. Individuals may produce more saliva and stomach...

Functional Brain Systems: Reticular Formation 01:13

2.6K

The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...

Brainstem 01:19

3.0K

The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...

Sleep-Wake Cycles 01:24

1.6K

Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and  rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:

Stage 1  is...

Neurogenesis and Regeneration of Nervous Tissue 01:15

1.0K

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

Neural Regulation of Blood Pressure 01:18

3.3K

The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...