Serological diagnosis of North American paragonimiasis by western blot using Paragonimus kellicotti adult worm antigen

Peter U. Fischer, Kurt C. Curtis, Scott M. Folk, Patricia P. Wilkins, Luis A. Marcos, Gary J. Weil

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

We studied the value of an IgG Western blot (WB) with Paragonimus kellicotti (Pk) antigen for diagnosis of North American paragonimiasis. The test was evaluated with sera from patients with Pk and Paragonimus westermani infections, with control sera from patients with other helminth infections, and sera from healthy Americans. All 11 proven Pk infection sera and two samples from suspected cases that were negative by P. westermani WB at the Centers for Disease Control and Prevention (CDC) contained antibodies to antigens at 34 kDa and at 21/23 kDa. Seven of 7 P. westermani sera contained antibodies to the 34 kDa antigen, but only 2 recognized the 21/23 kDa doublet. No control samples were reactive with these antigens. Antibody reactivity declined after praziquantel treatment. Thus, the P. kellicotti WB appears to be superior to P. westermani WB for diagnosing Pk infections, and it may be useful for assessing responses to treatment.

Original languageEnglish
Pages (from-to)1035-1040
Number of pages6
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume88
Issue number6
DOIs
StatePublished - Jun 2013

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