Table of Contents
Journal of Mycology
Volume 2014 (2014), Article ID 303491, 8 pages
http://dx.doi.org/10.1155/2014/303491
Research Article

Epidemiology and Virulence Determinants including Biofilm Profile of Candida Infections in an ICU in a Tertiary Hospital in India

1Department of Microbiology, Maulana Azad Medical College & Associated Lok Nayak Hospitals, New Delhi 110002, India
2Department of Anesthesiology, Maulana Azad Medical College & Associated Lok Nayak Hospitals, New Delhi 110002, India

Received 12 October 2013; Revised 5 December 2013; Accepted 5 December 2013; Published 12 January 2014

Academic Editor: Praveen Rao Juvvadi

Copyright © 2014 Ravinder Kaur et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The purpose of this prospective study was to isolate, speciate, and determine antifungal susceptibility and virulence patterns of Candida species recovered from the intensive care units (ICUs) in an Indian hospital. Study included 125 medical/postoperative patients admitted to ICU. Identification and speciation of yeast isolates were done by the biochemical methods. Antifungal susceptibility was done by broth microdilution method. Virulence testing of Candida species was done by phospholipase, proteinase, and adherence assay. A total of 103 Candida isolates were isolated; C. tropicalis was the predominant species (40.7%), followed by C. albicans (38.83 %), C. glabrata (11.65%), C. parapsilosis (3.88%), and 1.94% each of C. krusei, C. kefyr, and C. sphaerica. 60 Candida isolates (58.25%) showed resistance to fluconazole, while 7 (6.7%) isolates showed resistance to amphotericin B. Phospholipase and proteinase activities were seen in 73.8% and 55.3% Candida isolates with different species showing a wide range of activities, while 68.9% Candida isolates showed {4+} adherence activity. The present study revealed that nonalbicans Candida species (NAC spp.) caused most of the cases of Candidemia in the ICU patients. The isolation of C. tropicalis from a large number of cases highlights the ability of this pathogen to cause bloodstream infections. The presence of azole resistance is a matter of concern.