Volume 70, Issue 3
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


The salivary protein maxadilan (MAX) is a vasodilator and immunomodulator from the sand fly vector of the protozoan parasite . Vaccinating BALB/c mice with sand fly salivary gland extracts or with MAX protects the host against infection. Because of the potential use of MAX in an anti- vaccine, we characterized the vertebrate host IgG response to MAX in the present study. Our immunochemical analysis indicated that antibodies to MAX were detected in BALB/c mice, as well as in pigs and humans, from a area in Nicaragua endemic for . Previous studies demonstrate that the MAX protein is polymorphic on the amino acid level. Our findings suggested that naturally occurring MAX variants were recognized specifically by the host immune system and antigenicity appeared to be associated with amino-acid sequence variability. Thus, antigenic diversity of MAX and possibly of other arthropod salivary proteins may dictate the development of vector-based vaccines(s).


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  • Received : 14 May 2002
  • Accepted : 03 Mar 2003

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