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Updated: Jul 22, 2026
11:28
Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
Published on: October 7, 2011
Morphine reduces herpes simplex virus-1 pathogenesis in the murine flank
B S Weeks1, N I Alston, P Cadet
1Adelphi University, Division of Science and Mathematics, Department of Biology, Garden City, NY 11530, USA. weeks@adelphi.edu
International Journal of Molecular Medicine
|August 9, 2001
Summary
Morphine application reduced herpes simplex virus-1 (HSV-1) lesion severity in mice by half without affecting viral replication. This suggests morphine modulates the host immune response to HSV-1 infection.
Area of Science:
- Virology
- Immunology
- Pharmacology
Background:
- Herpes simplex virus-1 (HSV-1) causes primary and secondary lesions.
- Understanding factors influencing HSV-1 pathogenesis is crucial for developing effective treatments.
Observation:
- HSV-1 infection in mice created lesions within 3-4 days.
- Applying 0.1 mM morphine reduced lesion size by 50% on days 3-5 post-inoculation.
- Skin viral titers remained equivalent between morphine-treated and untreated mice.
Findings:
- Morphine treatment significantly decreased HSV-1 lesion severity.
- Morphine did not inhibit HSV-1 replication in vitro (Vero cells).
- The observed reduction in pathogenesis is likely due to host response modification.
Implications:
- Morphine may influence the host immune response during HSV-1 infection.
- Targeting host responses could be a novel therapeutic strategy for HSV-1.
- Further research is needed to elucidate the precise mechanisms of morphine's immunomodulatory effects on HSV-1.
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