Table 5.
Hemolysin index and proteinase index of the Candida bloodstream infection isolates.
Species (n) | Hemolysin index mean ± SD | No. of hemolysin-positive isolate/total no. of isolates | Proteinase index mean ± SD | No. of proteinase-positive isolate/total no. of isolates |
---|---|---|---|---|
C. albicans (40) | 1.592 ± 0.129 | 40/40 | 1.854 ± 0.262 | 31/40 |
C. tropicalis (10) | 1.949 ± 0.206a | 10/10 | 1.799 ± 0.130 | 8/10 |
C. parapsilosis (9) | 1.778 ± 0.230 | 2/9 | 1.640 ± 0.101 | 6/9 |
C. glabrata (2) | 2.058 ± 0.078a | 2/2 | 1 | 0/1 |
C. guilliermondii (1) | 1.727 | 1/1 | 1 | 0/1 |
C. dubliniensis (1) | 2.074 | 1/1 | 1 | 0/1 |
n, number of isolates; SD, standard deviation; a, significant higher than C. albicans. The hemolysin index was calculated by dividing the diameter of the transparent hemolytic halo with that of the fungal colony. Similarly, the proteinase index was determined by dividing the diameter of the transparent proteolytic halo with that of the fungal colony. A value of one indicates the absence of enzyme activity, and is excluded in the calculation of the mean. The hemolysin and proteinase indices of each of the individual isolates are provided in Supplementary Table 1.