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Updated: May 19, 2026
Isolation of Lymphocytes from Mouse Genital Tract Mucosa
Published on: September 3, 2012
Influence of methamphetamine on genital herpes simplex virus type 2 infection in a mouse model
Frances Valencia1, Marcy J Bubar, Gregg Milligan
1Department of Experimental Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA.
Background:
Use of the stimulant methamphetamine (METH) is increasingly common, with >35 million users worldwide. There is a known association between stimulant use and an increased incidence of HIV and other sexually transmitted infections (STIs). METH is known to have immune modulatory properties. However, the impact of METH on normal immune responses and disease pathogenesis with STIs has not been fully examined.
Methods:
We used a well-characterized murine model to investigate the impact of METH use on genital herpes simplex virus type 2 infection. Plaque assay and quantitative real-time polymerase chain reaction were used to measure viral replication. Cytokine bead array and enzyme-linked immunosorbent assay were used to determine levels of cytokines during host innate immune response.
Results:
METH treatment altered behavior, onset of clinical signs, and disease progression. METH-treated mice also had a thinned vaginal epithelium and an increase in virus present in the sensory ganglia. In addition, METH produced a local dysregulation of cytokine secretion that contrasts with its minimal impact on systemic cytokine secretion.
Conclusions:
Results suggest that the METH alterations of the host immune response partially contribute to enhanced genital herpes disease progression. These findings will improve understanding of METH use on host immune responses and susceptibility to disease.
Insights
Methamphetamine (METH) use exacerbates genital herpes simplex virus type 2 (HSV-2) infection by altering immune responses. METH disrupts local immune defenses, increasing viral replication and disease severity.
Area of Science:
- Immunology
- Virology
- Neuroscience
Background:
- Methamphetamine (METH) use is a growing global health concern, linked to increased sexually transmitted infections (STIs).
- METH possesses immune-modulatory properties, but its specific impact on immune responses during STIs remains unclear.
- Genital herpes simplex virus type 2 (HSV-2) is a prevalent STI with significant public health implications.
Purpose of the Study:
- To investigate the impact of METH use on genital HSV-2 infection in a murine model.
- To elucidate the effects of METH on host immune responses and viral pathogenesis during HSV-2 infection.
Main Methods:
- A well-characterized murine model was employed to study METH's effects on HSV-2 infection.
- Viral replication was quantified using plaque assays and real-time PCR.
- Cytokine levels were measured via cytokine bead array and ELISA to assess innate immune responses.
Main Results:
- METH treatment altered host behavior, clinical signs, and disease progression in HSV-2 infected mice.
- METH-exposed mice exhibited a thinned vaginal epithelium and increased viral presence in sensory ganglia.
- METH induced local dysregulation of cytokine secretion, with minimal systemic effects.
Conclusions:
- METH-induced alterations in host immune responses contribute to the enhanced progression of genital herpes.
- These findings enhance understanding of how METH use impacts immune function and disease susceptibility.
