Detection of IgG and IgM in Sera from Canines with Blastomycosis using Eight Blastomyces dermatitidis Yeast Phase Lysate Antigens |
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Authors: | Christine M Sestero Gene M Scalarone |
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Institution: | (1) Department of Biological Sciences, Idaho State University, Box 8007, Pocatello, ID 83209, USA |
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Abstract: | The objective of this study was to compare the efficacy of eight Blastomyces dermatitidis yeast phase lysate antigens (T-58: dog, Tennessee; T-27: polar bear, Tennessee; ERC-2: dog, Wisconsin; B5894: human, Minnesota;
SOIL: soil, Canada; B5896: human, Minnesota; 48089: human, Zaire; 48938: bat, India) in the detection of the immunoglobulins
IgG and IgM in serum specimens from canines with blastomycosis. An indirect enzyme-linked immunosorbent assay (ELISA, peroxidase
system) was used to analyze sera collected during four different intervals post-infection. The yeast lysate antigen 48938
was a reactive antigen for the detection of both IgG (mean absorbance value range: 1.198–2.934) and IgM (mean absorbance value
range: 0.505–0.845). For the same sera, antigen T-27 was also effective in the detection of IgG (mean absorbance value range:
0.904–3.356) and antigen 48089 was useful for the detection of IgM (mean absorbance value range: 0.377–0.554). The yeast lysate
antigen B5894 proved to be a poor antigen for the detection of both IgG and IgM (mean absorbance value ranges: 0.310–0.744
for IgG, 0.025–0.069 for IgM). Inherent variations in yeast lysate antigens such as these may be utilized to develop improved
immunoassay procedures for the specific detection of IgG or IgM in cases of blastomycosis. |
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Keywords: | Blastomyces dermatitidis ELISA IgG/IgM immunodiagnosis pathogenic fungi |
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