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09:01
An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
Published on: December 10, 2013
Respiratory syncytial virus may be a pathogen in allergic conjunctivitis
1Department of Ophthalmology, Tokyo Dental College, Sugano, Ichikawa, Japan. fujishim@tdc.ac.jp
Cornea
|May 9, 2002
Summary
Respiratory syncytial virus (RSV) infection in conjunctival epithelial cells may trigger allergic conjunctivitis by increasing interleukin-4 (IL-4) and histamine. This suggests RSV is an environmental factor in allergic eye disease.
Area of Science:
- Ophthalmology
- Immunology
- Virology
Background:
- Allergic conjunctivitis involves T helper type 2 (Th2) cell responses.
- Local cytokine patterns regulate host response to allergens.
Purpose of the Study:
- To investigate if respiratory syncytial virus (RSV) infects conjunctival epithelium.
- To determine if RSV produces interleukin-4 (IL-4), inducing allergic reactions.
Main Methods:
- Analysis of tear and cytology samples using Giemsa staining, immunocytochemistry, flow cytometry, and RT-PCR.
- Assay of histamine and IL-4 levels via radioimmunoassay and ELISA, respectively.
Main Results:
- Elevated IL-4 and histamine levels in allergic conjunctivitis patients.
- Increased IL-4 and IL-13 transcripts and higher RSV detection in allergic samples.
- RSV infection identified in conjunctival epithelial cells, with higher IL-4 production.
Conclusions:
- Human allergic conjunctivitis is linked to Th2 cytokine expression.
- RSV in conjunctival epithelial cells is a potential environmental trigger for allergic conjunctivitis.
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