Role of Intestinal Microbiota in Ulcerative Colitis
Role of Intestinal Microbiota in Ulcerative Colitis
Role of Intestinal Microbiota in Ulcerative Colitis
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Table 2 ‐ Preference <strong>of</strong> bacterial phylum/group/species to colonize mucosal over the lum<strong>in</strong>al compartment, expressed as ratio <strong>of</strong><br />
the relative quantities <strong>in</strong> the mucosal and lum<strong>in</strong>al compartment (%)<br />
Ratios (%) b<br />
Log (average)<br />
Healthy subjects UC remission UC relapse<br />
100.36 (±1.23) 100.46 (±1.64) 99.85 (±0.89)<br />
96.33 (±8.43) 83.81 (±5.12)* 82.39 (±3.35)*<br />
102.62 (±13.35) 83.75 (±4.22)* 93.91 (±4.97)<br />
88.47 (±10.94) 74.10 (±11.74) 66.81 (±10.73)*<br />
108.01 (±7.70) 137.83 (±12.28)# 146.06 (±41.24)<br />
128.02 (±11.17)# 149.25 (±15.99)* 104.60 (±9.57)<br />
94.70 (±8.85) 81.32 (±2.77)** 68.59 (±7.64)*<br />
99.98 (±2.84) 106.52 (±9.69) 94.36 (±7.57)<br />
98.44 (±2.87) 112.93 (±9.33) 86.17 (±4.66)#<br />
65.05 (17.58) 68.12 (±11.76)* 71.91 (±8.47)*<br />
a<br />
Bacterial taxa<br />
Lumen Mucus<br />
Firmicutes<br />
7.70 (±0.07) 7.71 (±0.03)<br />
• Clostridium leptum subgroup<br />
6.27 (±0.30) 5.41 (±0.21)<br />
o Faecalibacterium prausnitzii 5.08 (±0.34) 4.61 (±0.26)<br />
• Clostridium coccoides group<br />
5.53 (±0.33) 4.29 (±0.29)<br />
o Roseburia spp.<br />
3.39 (±0.24) 4.31 (±0.47)<br />
o Eubacterium rectal<br />
2.55 (±0.21) 3.21 (±0.28)<br />
• Lactobacillus spp.<br />
6.39 (±0.40) 5.20 (±0.40)<br />
Bacteroidetes<br />
5.65 (±0.23) 5.58 (±0.15)<br />
• Bacteroides spp.<br />
5.46 (±0.24) 5.33 (±0.19)<br />
• Alistipes spp.<br />
4.62 (±0.21) 3.22 (±0.37)<br />
Act<strong>in</strong>obacteria<br />
17<br />
86.17 (±2.24)**<br />
91.24 (±1.53)**<br />
94.60 (±3.12)<br />
6.67 (±0.18)<br />
7.35 (±0.11)<br />
73.86 (±7.58)#<br />
100.69 (±5.15)<br />
90.82 (±5.05)<br />
3.99 (±0.55)<br />
4.48 (±0.55)<br />
• Bifidobacterium spp.<br />
o B. bifidum<br />
58.66 (±22.92)*<br />
78.43 (±1.88)**<br />
85.99 (±6.14)<br />
4.65 (±0.27)<br />
5.43 (±0.47)<br />
o B. adolescentis<br />
94.60 (±15.00)<br />
79.79 (±3.55)*<br />
101.27 (±4.68)<br />
4.54 (±0.45)<br />
5.31 (±0.55)<br />
o B. pseudocatenulatum<br />
Proteobacteria<br />
92.74 (±3.89)<br />
101.22 (±4.53)<br />
101.19 (±1.75)<br />
3.49 (±0.23)<br />
3.56 (±0.24)<br />
• Desulfovibrio spp.<br />
Verrucomicrobia<br />
69.81 (±10.46)<br />
73.49 (±10.30)<br />
71.03 (±15.02)<br />
2.48 (±0.38)<br />
3.68 (±0.36)<br />
• Akkermansia muc<strong>in</strong>iphila<br />
a<br />
Logarithmic average <strong>of</strong> relative quantities for healthy subjects and UC patients from lum<strong>in</strong>al or mucosal bacteria levels.<br />
b<br />
Ratios (%) calculated as 100*mucosal samples/lum<strong>in</strong>al samples, hence below 100%, low adherence capacity to mucus and above 100%, high<br />
adherence capacity to mucus. B. pseudocatenulatum is both B. catenulatum and B. pseudocatenulatum<br />
Asterisks (*) <strong>in</strong>dicate significant differences between mucosal and lum<strong>in</strong>al samples (*P