Document Detail

Allergenic characterization of tropomyosin from the dusky brown cockroach, Periplaneta fuliginosa.
MedLine Citation:
PMID:  15242941     Owner:  NLM     Status:  MEDLINE    
Household arthropods are one of the most common causes of allergic diseases. Four species of cockroaches are found to reside in Korean homes, but published work deals almost exclusively with the German and American cockroaches. This study was undertaken to investigate the cross-reactive allergenic components of the dusky brown cockroach, Periplaneta fuliginosa. Enzyme-linked immunosorbent assay (ELISA) inhibition and immunoblot analyses for the dusky brown cockroach were performed with Blattella germanica and Dermatophagoides farinae allergic sera. cDNA encoding tropomyosin, which is a well known cross-reactive pan-allergen, was cloned by reverse transcriptase PCR, and recombinant protein was produced by using a pET-28b expression system. Native tropomyosin was purified by ammonium sulfate fractionation and electroelution. The immunoglobulin E (IgE) reactivities of native and recombinant tropomyosins were compared by an ELISA inhibition study. All 30 sera tested showed P. fuliginosa-specific IgE, and the IgE-binding reactivity of the P. fuliginosa extract was inhibited as much as 79.4% by a B. germanica extract and as much as 63.3% by a D. farinae extract. The deduced amino acid sequence of cloned cDNA was identical with that of Periplaneta americana tropomyosin (98.5% nucleotide sequence identity). Seven of 26 (26.9%) allergic sera had IgE specific for recombinant protein, and the maximum inhibition of P. fuliginosa-specific IgE achieved with recombinant tropomyosin was 37.7% at an inhibitor concentration of 10 microg/ml. Native tropomyosin inhibited the binding of IgE to the P. fuliginosa, B. germanica, and D. farinae extracts by 65.0, 51.8, and 39% at an inhibitor concentration of 1 microg/ml. P. fuliginosa appears to possess allergens that are highly cross-reactive with allergens of B. germanica and D. farinae. Tropomyosin was found to be a major allergenic component accounting for the cross-reactivity between cockroaches and dust mites.
Kyoung Yong Jeong; Heeyu Hwang; Jongweon Lee; In-Yong Lee; Dong Soo Kim; Chein-Soo Hong; Han-Il Ree; Tai-Soon Yong
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical and diagnostic laboratory immunology     Volume:  11     ISSN:  1071-412X     ISO Abbreviation:  Clin. Diagn. Lab. Immunol.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-07-09     Completed Date:  2005-01-13     Revised Date:  2013-04-18    
Medline Journal Info:
Nlm Unique ID:  9421292     Medline TA:  Clin Diagn Lab Immunol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  680-5     Citation Subset:  IM    
Department of Parasitology and Institute of Tropical Medicine, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul 120-752, Korea.
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MeSH Terms
Amino Acid Sequence
Base Sequence
Cloning, Molecular
Cross Reactions
DNA, Complementary / analysis
Electrophoresis, Polyacrylamide Gel
Enzyme-Linked Immunosorbent Assay
Immunoglobulin E / immunology*
Middle Aged
Molecular Sequence Data
Periplaneta / genetics,  immunology*
Recombinant Proteins / genetics,  immunology*
Reverse Transcriptase Polymerase Chain Reaction
Sequence Homology
Species Specificity
Tropomyosin / genetics*,  immunology*
Reg. No./Substance:
0/DNA, Complementary; 0/Recombinant Proteins; 0/Tropomyosin; 37341-29-0/Immunoglobulin E
Erratum In:
Clin Diagn Lab Immunol. 2006 May;13(5):602

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