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. 2020 May 21;59(7):3325–3338. doi: 10.1007/s00394-020-02282-5

Table 2.

Effects of prebiotics on faecal SCFA in type 2 diabetes

Prebiotics Placebo Between-p value
Baseline Δ 6w Within-p value Baseline Δ 6w Within-p value
Total SCFA (mmol/kg) 53.95 (43.89–75.23) 8.80 (− 4.7 to 27.44) 0.07 66.53 (58.40–83.50) − 4.98 (− 24.94 to 12.70) 0.35 0.04
Acetic acid (mmol/kg) 31.57 (25.38–40.14) 6.11 (− 3.14 to 13.34) 0.02 39.95 (33.95–42.87) − 4.23 (− 11.94 to 7.45) 0.34 0.02
% Acetic acid 56.19 (47.71–60.33) 2.24 (− 6.16 to 9.80) 0.22 53.58 (46.81–62.46) 1.07 (− 3.72 to 6.78) 0.46 0.58
Propionic acid (mmol/kg) 10.02 (6.46–13.33) 1.72 (− 2.49 to 8.57) 0.17 11.75 (8.96–16.25) − 1.52 (− 3.78 to 1.19) 0.12 0.04
% Propionic acid 16.54 (14.81–19.84) 0.06 (− 3.40 to 1.92) 0.96 17.97 (15.26–20.64) 0.26 (− 2.31 to 1.99) 0.90 0.90
Isobutyric acid (mmol/kg) 1.33 (0.87–1.67) 0.05 (− 0.81 to 0.85) 0.99 1.42 (0.91–2.92) − 0.33 (− 0.61 to 0.21) 0.09 0.70
% Isobutyric acid 2.55 (1.76–3.77) − 0.05 (− 1.39 to 0.41) 0.19 2.34 (1.38–3.43) 0.03 (− 0.60 to 0.33) 0.49 0.14
Butyric acid (mmol/kg) 9.06 (7.36–15.08) 2.35 (− 1.81 to 4.81) 0.17 10.63 (7.99–16.68) − 1.18 (− 6.58 to 6.04) 0.53 0.19
% Butyric acid 17.70 (14.20–22.53) − 0.90 (− 4.33 to 3.86) 0.53 16.30 (14.21–22.31) − 1.00 (− 5.13 to 4.72) 0.68 0.95
Isovaleric acid (mmol/kg) 2.05 (1.32–2.58) − 0.01 (− 1.51 to 1.16) 0.76 2.01 (1.37–4.38) − 0.40 (0.94–0.38) 0.15 0.82
% Isovaleric acid 3.91 (2.61–5.92) − 0.15 (− 2.29 to 0.86) 0.15 3.52 (1.99–5.32) 0.04 (− 1.01 to 0.77) 0.62 0.09
Valeric acid (mmol/kg) 1.61 (1.06–2.26) 0.06 (− 0.78 to 0.98) 0.80 1.57 (1.19–2.99) − 0.13 (− 0.50 to 0.28) 0.33 0.44
% Valeric acid 2.93 (2.34–3.42) − 0.43 (− 1.20 to 0.29) 0.12 2.81 (1.96–3.30) − 0.02 (− 0.34 to 0.41) 0.80 0.08
Isocaproic acid (mmol/kg) 0.00 (0.00–0.00) 0.00 (0.00–0.00) 0.32 0.00 (0.00–0.00) 0.00 (0.00–0.00) 1.00 0.32
% Isocaproic acid 0.00 (0.00–0.00) 0.00 (0.00–0.00) 0.32 0.00 (0.00–0.00) 0.00 (0.00–0.00) 1.00 0.32
Caproic acid (mmol/kg) 0.09 (0.00–0.62) 0.00 (− 0.14 to 0.05) 0.98 0.15 (0.00–0.15) 0.00 (− 0.17–0.17) 0.98 0.90
% Caproic acid 0.20 (0.00–0.50) 0.00 (− 0.45 to 0.08) 0.33 0.23 (0.00–1.59) 0.00 (− 0.33–0.10) 0.98 0.38

Data are median (25th–75th percentiles). Wilcoxon signed rank test

Significant differences in bold