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Indian J Microbiol. 2011 Jul;51(3):273-8. doi: 10.1007/s12088-011-0177-3. Epub 2011 Apr 9.

Virulence Factors and Anti Fungal Sensitivity Pattern of Candida Sp. Isolated from HIV and TB Patients.

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1
Department of Microbiology, Bharathidasan University, Tiruchirappalli, 620 024 India.

Abstract

The study comprised of 60 Candida spp., 50 isolates from HIV and TB positive individuals (immunocompromised) and 10 isolates from non-HIV and -TB patients (immunocompetent). Among the 60 Candidal isolates, 83.3% were identified as C. albicans, 11.6% as C. glabrata and rest 5% as C. krusei. There is no study in production pattern of extracellular enzymes of Candida spp. isolated from HIV and TB patients in comparison with non-HIV and -TB patients in India. The comparison of phospholipase activities showed that there was a significant difference between the groups at (P = 0.001). The non-HIV and -TB groups of C. glabrata and C. krusei did not show detectable phospholipase activity when compared to the HIV and TB groups. The mean difference in the phospholipase activities of these two groups was significant (P = <0.001). Candida spp. of both the groups do not possess the ability to hydrolyze gelatin. All the strains possessed the ability to show alpha haemolysis. Even though it had shown alpha haemolysis, the significant difference in haemolytic activity was observed only in C. albicans (P = <0.001). None of the isolates from the two groups possessed the ability to hydrolyze gelatin. In the resistance profile of Candida spp., C. albicans of HIV and TB groups had shown resistance to fluconazole, Itraconazole, ketaconazole, nystatin but showed 100% sensitivity towards amphotericin-B. The isolates of C. krusei and C. glabrata showed no resistance to any of the drugs tested. In the case of, non-HIV and -TB patients the resistance pattern was low.

KEYWORDS:

Candida; Fluconazole; HIV; Lipase; Protease; TB

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