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Serological examination of Philippine bats for Histoplasma capsulatum

Authors:

Lauren T Arayan ,

Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College Laguna, PH
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Alisha Wehdnesday B Reyes,

Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College Laguna, PH
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Joseph S Masangkay,

Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College Laguna, PH
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Yasuhiro Yoshikawa,

University of Tokyo, Graduate School of Agriculture and Life Sciences, JP
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Waren N Baticados,

Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College Laguna, PH
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Hope G Rovira

Department of Veterinary Paraclinical Sciences, College of Veterinary Medicine, University of the Philippines Los Baños, College Laguna, PH
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Abstract

Histoplasmosis is a disease of medical and veterinary concern. Bats are considered as reservoir hosts of the etiologic agent Histoplasma capsulatum, and are therefore used as animal subjects in experimental studies. Thirty six bats, consisiting of nine bats (Microchiroptera: Vespertilionidae) from Aklan, 22 bats (Megachiroptera: Pterodidae) from Quezon City and another five bats (Microchiroptera: Vespertilionidae) from Quezon City, Philippines were tested for the presence of precipitating antibodies to H. capsulatum using immunodiffusion assay. Results revealed that none of the bats tested were positive for H. capsulatum in agar gel precipitation assay. This may be due to no previous exposure of the bats to the pathogen, exposure to the pathogen with insufficient time for seroconversion (infection time < 3 - 5 weeks) prior to capture or the bats were resistant to infection. Any one of the aforementioned factors may have contributed to the absence of antibodies or low undetectable levels of circulating antibodies for H. capsulatum in the tested bats. This is the very first attempt at field collecting and monitoring for precipitating antibodies for H. capsulatum in Philippine wildlife, particularly in Philippine bats.  

Key words: Immunodiffusion assay; wildlife; antibodies; Aklan; Quezon City

DOI: http://dx.doi.org/10.4038/cjsbs.v40i2.3935

CJSBS 2011; 40(2): 183-186

DOI: http://doi.org/10.4038/cjsbs.v40i2.3935
How to Cite: Arayan, L.T. et al., (2012). Serological examination of Philippine bats for Histoplasma capsulatum. Ceylon Journal of Science (Biological Sciences). 40(2), pp.183–186. DOI: http://doi.org/10.4038/cjsbs.v40i2.3935
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Published on 13 Jan 2012.
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