Amebiasis and mucosal IgA antibody against the Entamoeba histolytica adherence lectin in Bangladeshi children

Rashidul Haque, Ibnekarim M. Ali, R. Bradley Sack, Barry M. Farr, Girija Ramakrishnan, William A. Petri

Research output: Contribution to journalArticle

Abstract

Amebiasis is the third leading parasitic cause of death worldwide, and it is not known whether immunity is acquired from a previous infection. An investigation was done to determine whether protection from intestinal infection correlated with mucosal or systemic antibody responses to the Entamoeba histolytica GalNAc adherence lectin. E. histolytica colonization was present in 0% (0/64) of children with and 13.4% (33/246) of children without stool IgA anti-GalNAc lectin antibodies (P = .001). Children with stool IgA lectin-specific antibodies at the beginning of the study had 64% fewer new E. histolytica infections by 5 months (3/42 IgA+vs. 47/227 IgA-; P = .03). A stool antilectin IgA response was detected near the time of resolution of infection in 67% (12/18) of closely monitored new infections. It was concluded that a mucosal IgA antilectin antibody response is associated with immune protection against E. histolytica colonization. The demonstration of naturally acquired immunity offers hope for a vaccine to prevent amebiasis.

Original languageEnglish (US)
Pages (from-to)1787-1793
Number of pages7
JournalJournal of Infectious Diseases
Volume183
Issue number12
DOIs
StatePublished - Jun 15 2001

ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases

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    Haque, R., Ali, I. M., Sack, R. B., Farr, B. M., Ramakrishnan, G., & Petri, W. A. (2001). Amebiasis and mucosal IgA antibody against the Entamoeba histolytica adherence lectin in Bangladeshi children. Journal of Infectious Diseases, 183(12), 1787-1793. https://doi.org/10.1086/320740