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HealthQuiet 10d · day 10

Exosomes may explain shingles' lingering pain, CU researchers discover

Study finds blood particles keep nerve cells inflamed long after virus clears, opening new treatment pathways.

newest coverage 9d agosummary written 9d ago6 pieces NewswiresRedditGoogle News

What to know

  • Post-herpetic neuralgia affects 10-18% of shingles patients and can cause debilitating pain for months or years, yet current treatments succeed in only half of cases.
  • A new study identifies exosomes—microscopic blood particles—as the likely cause: they keep nerve cells inflamed and prevent healing even after the shingles virus has been cleared.
  • Standard antiviral drugs target the virus but do not stop exosomes from perpetuating inflammation, explaining their failure to prevent chronic pain.
  • The findings suggest targeting exosomes directly could lead to entirely new therapies for post-herpetic neuralgia and potentially other chronic pain conditions.

“The pain of post-herpetic neuralgia can drive people to the point of suicide.”

Andrew Bubak, Associate Professor of Neurology, University of Colorado Anschutz · The Conversation ↗

Andrew Bubak Study lead, Associate Professor of NeurologyUniversity of Colorado Anschutz School of Medicine Research institution

Exosomes may explain shingles' lingering pain, CU researchers discover
The Conversation US

How it unfolded 1 development · click the chart to see its coverage articlesposts

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  1. 1

    Study opens new treatment pathways targeting exosomes

    The discovery suggests entirely new approaches for predicting, preventing, and treating post-herpetic neuralgia by targeting exosomes rather than the virus itself. Researchers indicate this could lead to therapies designed to stop exosomes from maintaining the inflamed state in nerve cells.

    “This opens the door to entirely new approaches for predicting, preventing, and treating post-herpetic neuralgia.”
    — CU Anschutz study authors
  2. background

    Findings explain why antivirals fail to prevent post-herpetic neuralgia — The research reveals a "failure-to-resolve" model where the nervous system becomes stuck in inflammation and abnormal remodeling. Exosomes generated during acute infection persist and drive nerve dysfunction independently of ongoing viral replication, which explains why standard antiviral treatments like acyclovir do not reliably prevent or reduce chronic pain.

  3. background

    Study reveals exosomes cause nerve dysfunction independent of active virus — Researchers exposed healthy nerve cells to exosomes collected from patients with post-herpetic neuralgia and observed the same inflammatory changes seen during active viral infection, but without any virus present. The exosomes did not kill cells but kept them in a dysfunctional, inflamed state.

  4. background

    CU Anschutz team publishes findings on exosomes and post-herpetic neuralgia — Researchers published a study in Annals of Neurology identifying exosomes as a likely cause of lingering shingles pain. The study found that blood particles released by infected nerve cells can keep neurons inflamed and prevent healing even after the virus has cleared.

Also covered reported alongside — the timeline has no entry for these yet

  1. 3 outlets Shingles can cause severe chronic pain – new research on how exosomes alter neurons offers pathways to treatment

    first by Yahoo News Canada, 9d ago · also Medical Xpress, The Conversation

and 1 smaller piece