1921
Volume 39, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645
USD

Abstract

Abstract

Indirect immunofluorescence of adult worm sections has revealed that the early immunoglobulin response is directed toward the parasite digestive tract. One of the components of the worm gut is a cysteine proteinase which degrades host hemoglobin ingested by the parasite. In this report the purified proteinase (SMw32) was used in ELISA and immunoblot analyses to study the specific antibody response during the course of an acute infection. We have found high titer IgG antibody in infected, but not uninfected, mice. The anti-proteinase response involves IgM, IgG1, IgG2a, and IgE isotypes. Total IgM and IgG levels increased by week 3 post-infection and remained elevated throughout the study (7 weeks). Increased titers (IgM, IgG) of specific anti-proteinase were also apparent by week 3 post-infection, long before fecal eggs were detectable. Mean anti-proteinase IgG stabilized at high titer by week 5 post-infection, while IgM titers decreased to near background levels. Anti-proteinase IgE was first detectable at week 4 and reached peak titers by weeks 6 and 7. The strong antibody response to the purified SMw32 proteinase is consistent with the early reactivity of infected mice and humans to a 31 kDa component of the worm gut described by others.

Loading

Article metrics loading...

/content/journals/10.4269/ajtmh.1988.39.66
1988-07-01
2017-11-23
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journals/10.4269/ajtmh.1988.39.66
Loading
  • Accepted : 18 Nov 1987

Most Cited This Month

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error