The present study employed two commercial real-time PCR kits, MycAssay™ Pneumocystis (PJ-PCR) and MycAssay™ Aspergillus (ASP-PCR), for the search of fungal DNA on 44 bronchoalveolar lavage (BAL) fluids from patients at risk of invasive fungal disease. Operationally, on the basis of clinical diagnosis and according to the European Organization for Research and Treatment Cancer/Mycoses Study Group (EORTC/MSG) criteria, patients were clustered in 3 groups: a P. jirovecii pneumonia (PCP) group, an invasive aspergillosis (IA) group and a control (CTRL) group, consisting of 8, 10 and 24 patients, respectively. The results were compared to those obtained with conventional diagnostic assays, including BAL culture, galactomannan-ELISA (GM) and immunofluorescence (IF). The PJ-PCR assay returned a sensitivity and specificity of 100% and 94.4%, respectively. The ASP-PCR assay showed a sensitivity and specificity of 80% and 97.1%. When compared to the culture assay, the ASP-PCR showed enhanced sensitivity, and a good level of agreement (kappa = 0.63) was observed between ASP-PCR and GM assays. Overall, our data emphasize the diagnostic usefulness of the two commercial real-time PCR assays, especially in high-risk patients where timing is critical and a low fungal burden may hamper correct and prompt diagnosis by conventional tests.

Orsi, C., Bettua, C., Pini, P., Venturelli, C., La Regina, A., Morace, G., et al. (2015). Detection of Pneumocystis jirovecii and Aspergillus spp. DNA in bronchoalveolar lavage fluids by commercial real-time PCR assays: Comparison with conventional diagnostic tests. NEW MICROBIOLOGICA, 38(1), 75-84.

Detection of Pneumocystis jirovecii and Aspergillus spp. DNA in bronchoalveolar lavage fluids by commercial real-time PCR assays: Comparison with conventional diagnostic tests

Luppi, F;
2015

Abstract

The present study employed two commercial real-time PCR kits, MycAssay™ Pneumocystis (PJ-PCR) and MycAssay™ Aspergillus (ASP-PCR), for the search of fungal DNA on 44 bronchoalveolar lavage (BAL) fluids from patients at risk of invasive fungal disease. Operationally, on the basis of clinical diagnosis and according to the European Organization for Research and Treatment Cancer/Mycoses Study Group (EORTC/MSG) criteria, patients were clustered in 3 groups: a P. jirovecii pneumonia (PCP) group, an invasive aspergillosis (IA) group and a control (CTRL) group, consisting of 8, 10 and 24 patients, respectively. The results were compared to those obtained with conventional diagnostic assays, including BAL culture, galactomannan-ELISA (GM) and immunofluorescence (IF). The PJ-PCR assay returned a sensitivity and specificity of 100% and 94.4%, respectively. The ASP-PCR assay showed a sensitivity and specificity of 80% and 97.1%. When compared to the culture assay, the ASP-PCR showed enhanced sensitivity, and a good level of agreement (kappa = 0.63) was observed between ASP-PCR and GM assays. Overall, our data emphasize the diagnostic usefulness of the two commercial real-time PCR assays, especially in high-risk patients where timing is critical and a low fungal burden may hamper correct and prompt diagnosis by conventional tests.
Articolo in rivista - Articolo scientifico
Adult; Aged; Aspergillosis; Aspergillus; Bronchoalveolar Lavage Fluid; DNA; Bacterial; Enzyme-Linked Immunosorbent Assay; Fluorescent Antibody Technique; Humans; Male; Middle Aged; Pneumocystis carinii; Pneumonia; Pneumocystis; Real-Time Polymerase Chain Reaction
Adult; Aged; Aspergillosis; Aspergillus; Bronchoalveolar Lavage Fluid; DNA, Bacterial; Enzyme-Linked Immunosorbent Assay; Fluorescent Antibody Technique; Humans; Male; Middle Aged; Pneumocystis carinii; Pneumonia, Pneumocystis; Real-Time Polymerase Chain Reaction
English
2015
38
1
75
84
none
Orsi, C., Bettua, C., Pini, P., Venturelli, C., La Regina, A., Morace, G., et al. (2015). Detection of Pneumocystis jirovecii and Aspergillus spp. DNA in bronchoalveolar lavage fluids by commercial real-time PCR assays: Comparison with conventional diagnostic tests. NEW MICROBIOLOGICA, 38(1), 75-84.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/219346
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