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Related Experiment Videos

Herpes simplex keratitis.

Stephen Kaye1, Anshoo Choudhary

  • 1St. Paul's Eye Unit and The Department of Medical Microbiology, Royal Liverpool University Hospital, Prescot Street, Liverpool L7 8XP, UK. s.b.kaye@liverpool.ac.uk

Progress in Retinal and Eye Research
|June 30, 2006
PubMed
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Herpes simplex keratitis (HSK) involves corneal infection by herpes simplex virus type 1 (HSV-1), leading to scarring and vision loss. Understanding viral latency and immune responses, particularly involving anti-angiogenic factors like thrombospondin, is key to new HSK therapies.

Area of Science:

  • Ophthalmology
  • Virology
  • Immunology

Background:

  • Herpes simplex keratitis (HSK) is caused by herpes simplex virus type 1 (HSV-1), establishing latency in the trigeminal ganglion and cornea.
  • Viral latency involves episomal forms and transcription of latency-associated transcripts (LATs), crucial for viral persistence and reactivation.
  • HSK pathogenesis involves complex interactions between viral factors and host immunity, leading to corneal scarring and neovascularization.

Purpose of the Study:

  • To review the pathogenesis of herpes simplex keratitis (HSK).
  • To explore the role of viral latency and host immune responses in HSK.
  • To investigate the contribution of angiogenic and anti-angiogenic factors in corneal pathology.

Main Methods:

  • Literature review of studies on HSV-1 infection, latency, and ocular pathogenesis.

Related Experiment Videos

  • Analysis of viral gene functions, including LAT region.
  • Examination of host immune responses and inflammatory mediators in HSK.

    • Main Results:

    • HSV-1 latency is established in the cornea and trigeminal ganglion, with LATs playing a role in viral persistence.
    • Recurrent HSK causes corneal scarring, thinning, and neovascularization, driven by immune responses.
    • HSV-1 disrupts angiogenic/anti-angiogenic balance, with thrombospondin 1 and 2 identified as key anti-angiogenic factors.

    Conclusions:

    • HSK pathogenesis is a complex interplay of viral and host factors.
    • Understanding viral latency mechanisms and immune-mediated damage is crucial for HSK management.
    • Targeting angiogenic pathways, particularly involving thrombospondin, offers potential therapeutic strategies for HSK.