Table 2.
Virulence of C. glabrata (hyrl epa1 epa2 epa3)Δ
Kidney
|
Liver
|
Spleen
|
||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Exp. 1
|
Exp 2
|
Exp. 3
|
Exp. 1
|
Exp. 1
|
||||||||||
Strain | Wild | M465 | M475 | Wild | M475 | Wild | M465 | M475 | Wild | M465 | M475 | Wild | M465 | M475 |
Sample size | 10 | 10 | 10 | 10 | 10 | 10 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 10 |
Min. (×10−2) | 2500 | 100 | 790 | 1900 | 500 | 6400 | 200 | 2700 | 900 | 100 | 520 | 10,600 | 270 | 18,000 |
Max. (×10−2) | 122,000 | 15,300 | 45,000 | 49,000 | 48,000 | 57,200 | 31,700 | 37,100 | 6500 | 3700 | 5400 | 42,000 | 61,000 | 82,000 |
Mean (×10−2) | 31,430 | 4520 | 14,219 | 14,100 | 6830 | 22,520 | 9980 | 13,140 | 2570 | 2200 | 2705 | 24,390 | 32,207 | 39,300 |
P-valuea | — | 0.008 | 0.04 | — | 0.008 | — | 0.05 | 0.12 | — | 0.91 | 1 | — | 0.16 | 0.06 |
Balb/C mice were infected by tail vein injection with 2 × 107 cells per strain and 10 mice were used per experiment per strain. Mice were sacrificed at day 7 after infection and kidney, liver, and spleen were recovered. The organs were homogenized and dilutions were plated on YPD Pen/Str plates, and CFU were scored (see Materials and Methods). Strains BG462 (wt), BG465 (mutant 1), and BG475 (mutant 2) were used in these experiments (see Supplemental Material, Table S1). There is a significant three- to five-fold reduction in kidney colonization, but no difference in colonization of spleen or liver. Representative counts are shown for spleen and liver from the first experiment; in the subsequent experiments as well there was no significant difference in recovered CFUs for the three strains for spleen and liver (data not shown).
Kruskal-Wallis test.