Real-Time Polymerase Chain Reaction Detection of Angiostrongylus cantonensis DNA in Cerebrospinal Fluid from Patients with Eosinophilic Meningitis (original) (raw)

Cover The American Journal of Tropical Medicine and Hygiene

Print ISSN:

0002-9637

Online ISSN:

1476-1645

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Ana Cristina Aramburu da Silva

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Angiostrongylus cantonensis is the most common infectious cause of eosinophilic meningitis. Timely diagnosis of these infections is difficult, partly because reliable laboratory diagnostic methods are unavailable. The aim of this study was to evaluate the usefulness of a real-time polymerase chain reaction (PCR) assay for the detection of A. cantonensis DNA in human cerebrospinal fluid (CSF) specimens. A total of 49 CSF specimens from 33 patients with eosinophilic meningitis were included: A. cantonensis DNA was detected in 32 CSF specimens, from 22 patients. Four patients had intermittently positive and negative real-time PCR results on subsequent samples, indicating that the level of A. cantonensis DNA present in CSF may fluctuate during the course of the illness. Immunodiagnosis and/or supplemental PCR testing supported the real-time PCR findings for 30 patients. On the basis of these observations, this real-time PCR assay can be useful to detect A. cantonensis in the CSF from patients with eosinophilic meningitis.

Author Notes

* Address correspondence to Yvonne Qvarnstrom, Centers for Disease Control and Prevention, MS-D64, 1600 Clifton Road, Atlanta, GA 30329. E-mail: bvp2@cdc.gov

Financial support: This study was funded by the U.S. National Food Safety Initiative and a CDC Epidemiology and Laboratory Capacity Cooperative Agreement.

Authors' addresses: Yvonne Qvarnstrom and LeAnne M. Fox, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA, E-mails: bvp2@cdc.gov and llf4@cdc.gov. Maniphet Xayavong, Life Source Biomedical LLC, Herndon, VA, E-mail: max1@cdc.gov. Ana Cristina Aramburu da Silva and Carlos Graeff-Teixeira, Laboratório de Parasitologia Molecular, Instituto de Pesquisas Biomédicas da PUCRS, Porto Alegre, Brazil, and Laboratório de Biologia Parasitária, Faculdade de Biociências da PUCRS, Porto Alegre, Brazil, E-mails: anacristina@pucrs.br and graeff.teixeira@gmail.com. Sarah Y. Park, Hawaii Department of Health, Honolulu, HI, E-mail: sarah.park@doh.hawaii.gov. A. Christian Whelen, Precilia S. Calimlim, and Rebecca H. Sciulli, Hawaii Department of Health, Pearl City, HI, E-mails: chris.whelen@doh.hawaii.gov, precilia.calimlim@doh.hawaii.gov, and rebecca.sciulli@doh.hawaii.gov. Stacey A. A. Honda, Hawaii Permanente Medical Group, Honolulu, HI, E-mail: stacey.honda@kp.org. Karen Higa, Kaiser Permanente Regional Laboratory, Honolulu, HI, E-mail: karen.higa@kp.org. Paul Kitsutani, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, E-mail: paul.kitsutani@nih.gov. Nora Chea, Division of Healthcare Quality Promotion, National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, E-mail: xdc7@cdc.gov. Seng Heng, Communicable Disease Department, Ministry of Health, Phnom Penh, Cambodia, E-mail: senghengmoh@gmail.com. Stuart Johnson, Loyola University Medical Center, Chicago, IL, and Edward Hines Jr. VA Hospital, Chicago, IL, E-mail: stuart.johnson2@va.gov. Alexandre J. da Silva, Center for Food Safety and Applied Nutrition, Food and Drug Administration, Laurel, MD, E-mail: alexandre.dasilva@fda.hhs.gov.

Copyright:

© The American Society of Tropical Medicine and Hygiene 2016

Received:

20 Feb 2015

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Accepted:

22 Sep 2015

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Published Online:

06 Jan 2016

Cover The American Journal of Tropical Medicine and Hygiene

Print ISSN:

0002-9637

Online ISSN:

1476-1645

ProCite

RefWorks

Reference Manager

Past two years Past Year Past 30 Days
Abstract Views 620 426 29
Full Text Views 840 32 4
PDF Downloads 350 31 5

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