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Disorders of the Nervous Tissue01:28

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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...
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The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
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How does neurovascular unit dysfunction contribute to multiple sclerosis?

Jake M Cashion1, Kaylene M Young2, Brad A Sutherland1

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Neurobiology of Disease
|February 3, 2023
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Summary
This summary is machine-generated.

Multiple sclerosis (MS) involves central nervous system inflammation. Neurovascular unit dysfunction may drive MS development and progression, offering a new therapeutic target beyond current immune-modulating treatments.

Keywords:
AstrocytesEndothelial cellsMultiple sclerosisNeurovascular unitPericytes

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Area of Science:

  • Neuroscience
  • Immunology
  • Vascular Biology

Background:

  • Multiple sclerosis (MS) is a leading cause of neurological disability in young adults, characterized by central nervous system inflammation and demyelination.
  • Current disease-modifying therapies for MS primarily target peripheral immune responses, improving relapse rates but not halting neurodegeneration or disease progression.
  • The unknown etiology of MS hinders preventative strategies, despite identified risk factors like vitamin D deficiency, smoking, and obesity impacting vascular health.

Purpose of the Study:

  • To review MS risk factors and pathophysiology.
  • To highlight the role of neurovascular unit dysfunction in MS development and progression.
  • To evaluate the neurovascular unit as a potential therapeutic target for future MS treatments.

Main Methods:

  • Literature review of multiple sclerosis risk factors and pathophysiology.
  • Analysis of existing data on neurovascular unit function in MS.
  • Evaluation of neurovascular unit as a therapeutic target.

Main Results:

  • Individuals with MS exhibit blood-brain barrier breakdown, microbleeds, and altered cerebral blood flow, suggesting vascular pathology involvement.
  • The neurovascular unit, crucial for regulating neuroinflammation and blood-brain barrier integrity, shows compromised microvasculature cells in MS lesions.
  • Genetic and cell biology studies indicate that neurovascular dysfunction may be a primary factor in MS development.

Conclusions:

  • Neurovascular unit dysfunction is implicated in both the development and progression of multiple sclerosis.
  • Targeting the neurovascular unit presents a promising avenue for novel therapeutic strategies in MS management.
  • Further research into the neurovascular unit's role could unlock effective prevention and treatment for MS.