This Week in Neuroscience

TWiN 33: Viruses leaving the brain

Aug 31, 2022
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INSIGHT

Brain's Immune System

  • The brain was previously thought to be immune-privileged, with no lymphatic drainage.
  • Recent discoveries of meningeal lymphatic vessels (MLVs) challenge this dogma, revealing complex brain-immune interactions.
INSIGHT

Viral Entry and Exit

  • Many viruses enter the brain via blood-brain barrier breaches, olfactory/trigeminal nerves, or CSF.
  • This study explores if meningeal lymphatic vessels (MLVs) mediate viral exit.
ANECDOTE

Mice Brain Resilience

  • Vincent Racaniello injected poliovirus directly into mice brains for research.
  • Surprisingly, mice recovered quickly, highlighting their resilience.
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