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Investigation of Cryptosporidium spp. antigen by ELISA method in stool specimens obtained from patients with diarrhea

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Abstract

Cryptosporidium spp. is an important parasitic protozoan causing diarrhea in developing and developed countries. The agent causes severe life-threatening diarrhea especially in immunocompromised hosts. Diagnosis of the Cryptosporidium oocyst in stool samples by conventional microscopy is labor-intensive and time-consuming. Thus, we aimed to evaluate the usefulness of a copro-antigen enzyme-linked immunosorbent assay (ELISA) test in detecting Cryptosporidium spp. from fecal specimens. For this aim, microscopy and specific antigen detection methods were compared to determine Cryptosporidium spp. In addition, specific antigen by ELISA method in stool was investigated in order to find out whether or not it contributes to the diagnosis of Cryptosporidium spp. One hundred and fifty-four stool specimens taken from patients whose ages ranged from 0 to 86 with diarrhea applied to Department of Parasitology, Balcali Hospital of Cukurova University in Adana, Turkey were used. All samples were examined for Cryptosporidium spp. antigen by ELISA and oocysts via gold standard modified acid-fast staining, between October 2008 and July 2009. Eight (5.19%) specimens were found to be positive by modified acid-fast staining method and 37 (24.03%) specimens by copro-antigen ELISA method were found to be positive. The sensitivity and specificity for copro-antigen ELISA were 100% and 80.1%, respectively. The results of copro-antigen ELISA indicate that the simple, rapid, reliable, and standardized immunoassay test is sensitive and specific for routine diagnosis and may be useful for large-scale epidemiological studies of cryptosporidiosis.

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Acknowledgements

This study was supported by the Cukurova University Research Grant TF.2008.YL.7

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Authors and Affiliations

  1. Faculty of Medicine, Department of Parasitology, Universitiy of Cukurova, Balcali, , Adana, Turkey

    Gullu Elgun & Ismail Soner Koltas

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  1. Gullu Elgun
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  2. Ismail Soner Koltas
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Correspondence to Gullu Elgun.

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Elgun, G., Koltas, I.S. Investigation of Cryptosporidium spp. antigen by ELISA method in stool specimens obtained from patients with diarrhea. Parasitol Res 108, 395–397 (2011). https://doi.org/10.1007/s00436-010-2079-4

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