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Infection and Immunity, April 2003, p. 1880-1886, Vol. 71, No. 4
0019-9567/03/$08.00+0     DOI: 10.1128/IAI.71.4.1880-1886.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.

Oral Transfer of Adult Ancylostoma ceylanicum Hookworms into Permissive and Nonpermissive Host Species

Richard D. Bungiro Jr.,* Brett R. Anderson, and Michael Cappello

Infectious Diseases Section, Yale Child Health Research Center, Departments of Pediatrics and Epidemiology and Public Health, Yale University School of Medicine, New Haven, Connecticut 06520-8081

Received 18 October 2002/ Returned for modification 14 December 2002/ Accepted 7 January 2003

Syrian hamsters become anemic and exhibit delayed growth following oral infection with third-stage Ancylostoma ceylanicum hookworm larvae. Here we describe experiments designed to determine the feasibility of adult worm transfer (AWT) between hosts, a technique that would facilitate the specific study of bloodfeeding hookworms in vivo without prior exposure of the host to larva-specific antigens, permit the ex vivo manipulation of adult parasites prior to reimplantation, and also allow for cross-species transfer of worms. Weanling hamsters given an oral AWT of 40 or 60 mixed-sex A. ceylanicum worms rapidly developed anemia; in the higher-dose group, hemoglobin levels declined from prechallenge levels by 44% within 4 days following AWT. Long-term survival of transferred worms was demonstrated by recovery of parasites from the intestines 42 days after AWT. AWT hamsters acquired humoral immune responses against soluble adult hookworm extracts and excretory-secretory products that were comparable in magnitude to those of animals given a typical infection with larvae. In AWT experiments employing the nonpermissive murine model, C57BL/6 mice given adult worms rapidly became anemic and lost weight in a manner similar to AWT hamsters. Infection of additional mouse strains demonstrated that while C57BL/10 and CD-1 mice also developed anemia following AWT, BALB/c mice were resistant. The technique of AWT to mice may further our understanding of hookworm pathogenesis by allowing the study of adult hookworm infections in a species with well-characterized genetics and an abundance of available reagents.

* Corresponding author. Mailing address: Department of Pediatrics, Yale University School of Medicine, P.O. Box 208081, New Haven, CT 06520-8081. Phone: (203) 737-4063. Fax: (203) 737-5972. E-mail: richard.bungiro{at}yale.edu.

Editor: W. A. Petri, Jr.

Infection and Immunity, April 2003, p. 1880-1886, Vol. 71, No. 4
0019-9567/03/$08.00+0     DOI: 10.1128/IAI.71.4.1880-1886.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Held, M. R., Bungiro, R. D., Harrison, L. M., Hamza, I., Cappello, M. (2006). Dietary Iron Content Mediates Hookworm Pathogenesis In Vivo. Infect. Immun. 74: 289-295 [Abstract] [Full Text]  
  • BUNGIRO, R. D. JR., CAPPELLO, M. (2005). DETECTION OF EXCRETORY/SECRETORY COPROANTIGENS IN EXPERIMENTAL HOOKWORM INFECTION. Am J Trop Med Hyg 73: 915-920 [Abstract] [Full Text]  
  • Bungiro, R. D. Jr., Solis, C. V., Harrison, L. M., Cappello, M. (2004). Purification and Molecular Cloning of and Immunization with Ancylostoma ceylanicum Excretory-Secretory Protein 2, an Immunoreactive Protein Produced by Adult Hookworms. Infect. Immun. 72: 2203-2213 [Abstract] [Full Text]  
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