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- W2023124600 abstract "Summary Background Candida spp. are the most common opportunistic fungal pathogens in humans. Oral Candida infection has been reported to be increased with pulmonary tuberculosis patients. Extracellular hydrolytic enzymes seem to play an important role in candidal overgrowth. Objective To determine the enzymatic activity and to investigate the distribution of phospholipase C (PLC) gene among the Candida isolates from patients with pulmonary tuberculosis and non tuberculosis patients. Method The study involved a total of 62 isolates of Candida from patients with pulmonary tuberculosis (37) and non tuberculosis patients (25) of Aarupadaiveedu Medical College Hospital, Pudhucherry, India. After species identification, the isolates were analyzed for the production/activity of phospholipase C, proteinase, caseinase, lipase, gelatinase, hemolysin and hydrophobicity. In addition, the distribution of PLC gene was investigated to elucidate molecular mechanism of virulence. Results All the isolates were able to produce proteinase, caseinase and lipase. Phospholipase C, hemolytic activity and the hydrophobicity were observed as 72.9, 29.7 and 27% respectively for the isolates from the patients with pulmonary tuberculosis. The corresponding values for the isolates of non tuberculosis patients were 24, 24 and 16% respectively. Gelatinolytic activity was not observed in any of the isolates. The polymerase chain reaction (PCR) based analysis for the distribution of the PLC gene showed 94.5% for the isolates of pulmonary tuberculosis patients and 84% for the isolates of non tuberculosis patients. Appreciably, the expression of the phospholipase was observed high in Candida glabrata isolates of pulmonary tuberculosis patients over the C. glabrata strains of non tuberculosis individuals. Conclusion Candida isolates invariably showed high levels of phospholipase, proteinase, caseinase and lipase activities. Particularly, the phospholipase activity was relatively high among the isolates from pulmonary tuberculosis patients. This may be one of the virulence mechanisms of pathogenic Candida, which might get elicited during the progression of pulmonary tuberculosis. Based on the present findings, it could be envisaged that the extracellular virulence of Candida spp. might have significant functional role in the progression of secondary etiology. The PLC gene of C. glabrata was sequenced and deposited in NCBI (Accession No: EU 814636). The phylogenetic analysis of the sequences evidenced that the C. glabrata as a pathogenic strain of Candida spp." @default.
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- W2023124600 date "2009-03-01" @default.
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- W2023124600 title "Phospholipase C, proteinase and hemolytic activities of Candida spp. isolated from pulmonary tuberculosis patients" @default.
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- W2023124600 doi "https://doi.org/10.1016/j.mycmed.2008.11.002" @default.
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