Comparison of Different Methods of Detection of Enteric Pathogenic Protozoa.
Indian J Med Microbiol
;
2013 Apr-Jun; 31(2): 154-160
Artigo
em Inglês
| IMSEAR
| ID: sea-148023
ABSTRACT
Purpose:
The study was conducted to compare different methods of detection of pathogenic protozoan parasites in stool specimens of People Living with HIV/AIDS (PLHA). Materials andMethods:
Stool specimens of 242 HIV sero-positive patients were examined using the wet mount technique, modified Ziehl-Neelsen's (ZN) staining, auto-fluorescence and auramine fluorescence staining. Patient specimens, 94 and 40 out of 242, were also subjected to Giardia antigen detection using an enzyme immunoassay and Cryptosporidium antigen detection by immuno-chromatography, respectively. For calculation of sensitivity, specificity, positive and negative predictive values, light microscopy of wet mounts and modified ZN stained smears for Giardia and Coccidia, respectively, were considered as gold standards.Results:
Sensitivity of auto-fluorescence, auramine-O staining and antigen detection techniques was found to be 100% as compared to the routine standards. The specificity of auto-fluorescence was 90.6% and 100% for Cyclospora and Isospora, respectively; that of auramine-O staining was 98.9% for Cryptosporidium, 99.30% for Cyclospora and 100% for Isospora; and that of antigen detection was 90.6% and 97.7% for Cryptosporidium and Giardia, respectively.Conclusion:
In laboratories requiring screening of large number of stool specimens for detection of protozoan parasites, fluorescence microscopy and antigen detection can be useful techniques. Confirmation of positive results, however, needs to be done with the standard techniques.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Tipo de estudo:
Estudo diagnóstico
Idioma:
Inglês
Revista:
Indian J Med Microbiol
Assunto da revista:
Microbiology
Ano de publicação:
2013
Tipo de documento:
Artigo
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