TABLE 2.
Cell numbers of each species of the Bacteroides fragilis group in fecal samples before pollen season
| Species | Mean cell no./g ± SD (% prevalence)a
|
||
|---|---|---|---|
| Pollinosis (n = 44) | Healthy (n = 14) | Total (n = 58) | |
| Bacteroides caccae | 8.95 ± 0.85 (40.9) | 8.61 ± 0.79 (71.4) | 8.83 ± 0.83 (48.3) |
| Bacteroides coprocola | 8.64 ± 0.55 (20.5) | 9.03 ± 0.31 (28.6) | 8.76 ± 0.51 (22.4) |
| Bacteroides coprophilus | 7.93 ± 0.64 (11.4) | NDb (0) | 7.93 ± 0.64 (8.6) |
| Bacteroides dorei | 8.83 ± 0.77 (84.1) | 8.49 ± 0.57 (92.9) | 8.74 ± 0.73 (86.2) |
| Bacteroides eggerthii | 8.17 ± 0.89 (38.6) | 7.94 ± 0.63 (21.4) | 8.14 ± 0.85 (34.5) |
| Bacteroides finegoldii | 7.62 ± 0.51 (25.0) | 8.05 ± 0.30 (14.3) | 7.68 ± 0.50 (22.4) |
| Bacteroides fragilis | 8.50 ± 0.86 (75.0)* | 8.19 ± 0.37 (35.7) | 8.46 ± 0.81 (65.5) |
| Bacteroides intestinalis | 8.65 ± 0.81 (36.4)* | 8.54 ± 0.00 (7.1) | 8.64 ± 0.79 (29.3) |
| Bacteroides ovatus | 8.28 ± 0.48 (61.4) | 8.25 ± 0.50 (50.0) | 8.27 ± 0.48 (58.6) |
| Bacteroides plebeius | 8.17 ± 0.78 (29.6) | 7.87 ± 0.81 (28.6) | 8.10 ± 0.77 (29.3) |
| Bacteroides stercoris | 8.89 ± 0.51 (15.9) | ND (0) | 8.89 ± 0.51 (12.1) |
| Bacteroides thetaiotaomicron | 9.12 ± 0.74 (45.5) | 8.64 ± 0.24 (57.1) | 8.99 ± 0.67 (48.3) |
| Bacteroides uniformis | 9.04 ± 0.93 (79.6) | 8.94 ± 0.68 (100) | 9.01 ± 0.86 (84.5) |
| Bacteroides vulgatus | 9.50 ± 1.09 (68.2) | 9.40 ± 0.56 (71.4) | 9.48 ± 0.98 (69.0) |
| Total (14 species) | 9.88 ± 0.94 (100) | 9.68 ± 0.56 (100) | 9.83 ± 0.87 (100) |
Cell numbers (mean ± standard deviation) were determined as log10 cells per gram (wet weight) of feces among individuals over detection limits, with prevalence given as a percentage in parentheses. Detection limits for each bacterial species by real-time PCR were 106/g (wet weight) of feces. Statistical analyses were performed using SPSS version 14.0 statistical software (SPSS, Japan). Intergroup differences were analyzed using the Mann-Whitney U test on cell numbers after logarithmic transformation, by substituting data with log 106 values for individuals under the detection limits. *, P < 0.05 for significant intergroup difference compared with the healthy group.
ND, not detected (<log 106 cells/g).