Localization of Der f 2 in the gut and fecal pellets of Dermatophagoides farinae

K. Y. Jeong, I. Y. Lee, H. I. Ree, C. S. Hong, T. S. Yong

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


Background: House dust mite derived materials are known to be the most potent agent inducing allergic diseases. Localization of Der f 2 was attempted to specify the sites and concentrations of Der f 2 within the mite, which may indicate the importance of secreted materials and nonexcreted body components as allergen sources. Methods: Serial cryostat sections of embedded live mites and the fecal pellets, collected by brush, were immunoprobed using monoclonal antibody (mAb) 2F38 raised against recombinant (r) Der f 2. Results: Highest concentrations were found in the anterior midgut, implying that this is the site of Der f 2 synthesis and secretion. Digestive material and defecated fecal pellets were also labeled with mAb. Conclusions: Our results show that the major allergen, Der f 2, found in the house dust mite D. farinae is derived from the digestive tract, and is concentrated in the feces.

Original languageEnglish
Pages (from-to)729-731
Number of pages3
JournalAllergy: European Journal of Allergy and Clinical Immunology
Issue number8
Publication statusPublished - 2002

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology


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