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Immune response profiles after caterpillar exposure: a case report.
Tamar A Smith-Norowitz1, Kevin B Norowitz, Stephan Kohlhoff
1Department of Pediatrics, SUNY Downstate Medical Center, NY, USA.
Journal of Inflammation Research
|November 19, 2011
Summary
Exposure to sycamore tussock moth larvae can trigger allergic reactions, impacting immune cells and increasing cytokine levels. This study details the immune response following exposure to Halysidota harrisii larvae.
Area of Science:
- Immunology
- Allergology
- Toxicology
Background:
- The immune response to caterpillar exposure is not well understood.
- This case study is the first to document an allergic reaction to sycamore tussock moth (Halysidota harrisii) larvae.
Observation:
- An adult with asthma experienced contact urticaria and dyspnea after exposure to Halysidota harrisii larvae.
- Blood samples were analyzed for lymphocyte and monocyte distributions, serum immunoglobulins, and cytokine levels over a two-week period.
Findings:
- Significant decreases in CD4(+) T cells, CD19(+) B cells, and CD1d(+) monocytes were observed one week post-exposure.
- Natural killer (NK) precursor cells (CD16/56(+)) showed transient increases.
- Elevated serum IgE levels and increased IFN-γ and TNF-α cytokine levels were detected following exposure, while IL-4 remained undetectable.
Implications:
- Exposure to Halysidota harrisii larvae can induce significant alterations in immune cell populations and cytokine profiles.
- The findings suggest a complex immune response involving both cellular and humoral immunity, with potential implications for allergic disease management.
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