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Related Concept Videos

Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
Spinal Cord Injury ll: Pathophysiology01:14

Spinal Cord Injury ll: Pathophysiology

Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
Degenerative Disc Disease ll: Pathophysiology01:23

Degenerative Disc Disease ll: Pathophysiology

The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...
Spinal Cord01:26

Spinal Cord

The spinal cord, a critical component of the central nervous system, extends from the base of the brainstem to the lumbar region of the vertebral column. It is essential for maintaining physical stability and facilitating communication between the brain and peripheral parts of the body.
Spinal Cord: Cross-sectional Anatomy01:16

Spinal Cord: Cross-sectional Anatomy

The cross-sectional anatomy of the spinal cord offers a detailed view of its complex structure and function within the central nervous system. At the core of the spinal cord lies the gray matter, characterized by its butterfly or "H"-shaped appearance in cross-section. This central region is enveloped by white matter, with the overall structure divided into symmetrical halves by the dorsal median sulcus and the ventral median fissure.
Gray Matter and its Components
Central to the gray matter is...
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Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...

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Clinical Testing and Spinal Cord Removal in a Mouse Model for Amyotrophic Lateral Sclerosis (ALS)
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Published on: March 17, 2012

[Devic disease associated with isolated spinal cord atrophy].

N Landragin1, L Jeanjean, S Bouly

  • 1Service de Neurologie, CHU, Nîmes.

Revue Neurologique
|March 22, 2008
PubMed
Summary

Devic disease, also known as neuromyelitis optica spectrum disorder (NMOSD), can present with spinal cord atrophy years after initial symptoms. This case highlights the long-term neurological changes associated with NMOSD.

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Area of Science:

  • Neurology
  • Immunology
  • Neuroimmunology

Background:

  • Devic disease, now recognized as neuromyelitis optica spectrum disorder (NMOSD), is an autoimmune condition primarily affecting the optic nerves and spinal cord.
  • The discovery of aquaporin-4 antibodies (Anti-NMO) has expanded the understanding of NMOSD's clinical and imaging manifestations.
  • NMOSD is characterized by episodes of optic neuritis and transverse myelitis.

Observation:

  • This report details a patient diagnosed with NMOSD who developed significant spinal cord atrophy.
  • The spinal cord atrophy was observed more than 8 years after the initial onset of symptoms.
  • The patient also experienced bilateral optic neuritis, a hallmark symptom of NMOSD.

Findings:

  • The case demonstrates that severe spinal cord atrophy can be a long-term consequence of NMOSD.
  • This finding suggests a potential for progressive neurological damage even after the acute phases of the disease.
  • The extended timeline of symptom manifestation broadens the recognized phenotype of NMOSD.

Implications:

  • Understanding the long-term sequelae of NMOSD is crucial for patient management and prognosis.
  • This case underscores the importance of continued monitoring and potentially long-term treatment strategies for NMOSD patients.
  • Further research into the mechanisms driving chronic spinal cord changes in NMOSD is warranted.