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http://dx.doi.org/10.3904/kjm.2013.84.2.203

Clinical and Serological Findings in Patients with Toxocariasis in the Pohang Region: The Features of Toxocariasis in Pohang  

Ryu, Byung Han (Department of Allergy and Rheumatology, Sunlin Hospital)
Park, Jun Seok (Department of Allergy and Rheumatology, Sunlin Hospital)
Jung, Yeo Jin (Department of Allergy and Rheumatology, Sunlin Hospital)
Kang, Soo Kyoung (Department of Allergy and Rheumatology, Sunlin Hospital)
Lee, Seung Hee (Department of Allergy and Rheumatology, Sunlin Hospital)
Choi, Sung Jin (Department of Allergy and Rheumatology, Sunlin Hospital)
Publication Information
The Korean Journal of Medicine / v.84, no.2, 2013 , pp. 203-210 More about this Journal
Abstract
Background/Aims: This study was performed to investigate the clinical and serological characteristics of toxocariasis in the Pohang region. Methods: A total of 145 patients with peripheral eosinophilia (> 450 $cells/{\mu}L$) were enrolled and divided into two groups based on Toxocara excretory-secretory IgG enzyme-linked immunosorbent assay (ELISA) positivity, and the clinical features and serologic markers were compared between the two groups. Results: The seropositive rate of Toxocara was 62.1%. The serum total eosinophils (p = 0.038), total IgE level (p < 0.01), Dermatophagoides farinae (Df) seropositivity rate (p < 0.01), frequency of eosinophilic tissue infiltration in the lung or liver (p < 0.01), and ingestion of raw cow meat or liver (p < 0.01) were higher in seropositive patients than in seronegative patients. However, the presence of asthma and rhinitis (p < 0.01) were more frequent in seronegative patients. Among seropositive patients, positive correlations were observed between serum total IgE, total eosinophils, and the optical density value of the Toxocara IgG ELISA (p < 0.01; p = 0.015, respectively). The specific IgE to Df was significantly higher (p < 0.01) than that to Dermatophagoides pteronyssinus (Dp), suggesting a cross reaction between the Df antigen and the Toxocara antigen. Conclusions: Patients who have elevated serum total IgE and have eosinophilia without allergic disease might have toxocariasis. The lower frequency of asthma or rhinitis and a tendency for higher specific IgE to Df than that to Dp could be useful findings for the diagnosis of toxocariasis in patients with eosinophilia.
Keywords
Toxocariasis; Toxocara canis; Eosinophilia; Immunoglobulin E; Dermatophagoides;
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