Molecular characterization of the North American lung fluke Paragonimus kellicotti in Missouri and its development in Mongolian gerbils

Peter U. Fischer, Kurt C. Curtis, Luis A. Marcos, Gary J. Weil

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Human paragonimiasis is an emerging disease in Missouri. To characterize local parasites, we examined crayfish from three rivers. Metacercaeriae consistent with Paragonimus kellicotti were detected in 69%, 67%, and 37% of crayfish from the Big Piney, Huzzah, and Black Rivers, respectively. Sequencing of the second internal transcribed spacer and other DNA markers confirmed the species identification and the presence of identical parasite sequences in clinical specimens from two human cases. Mongolian gerbils were infected by intraperitoneal injection with 3-8 metacercariae. Most gerbils died 15-49 days post-infection. Necropsies showed pulmonary hemorrhage with necrosis, and flukes as long as 8 mm were recovered from intrathoracic tissues. Western blot analysis using P. kellicotti antigen showed a strong antibody response in gerbils 39 days post-infection. These results demonstrate that P. kellicotti is common in Missouri crayfish. The gerbil model may be useful for research on the pathogenesis, immunology, and treatment of paragonimiasis.

Original languageEnglish
Pages (from-to)1005-1011
Number of pages7
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume84
Issue number6
DOIs
StatePublished - Jun 2011

Fingerprint

Dive into the research topics of 'Molecular characterization of the North American lung fluke Paragonimus kellicotti in Missouri and its development in Mongolian gerbils'. Together they form a unique fingerprint.

Cite this