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Table 3 TMAO, TMA and their precursors concentrations in stool, serum and urine

From: Trimethylamine, a gut bacteria metabolite and air pollutant, increases blood pressure and markers of kidney damage including proteinuria and KIM-1 in rats

Parameter [µM/l]

Control group

L group

H group

Kruskal–Wallis test

Stool

 TMA

19.70 (13.86; 30.38)

30.14 (21.27; 41.67)

54.62 (47.88; 79.21)**

P = 0.003

 Choline

77.55 (67.81; 92.10)

61.87 (57.19; 84.98)

81.52 (77.15; 88.23)

P = 0.41

 Carnitine

8.91 (7.43; 11.49)

6.07 (3.97; 8.03)

6.52 (5.87; 7.62)

P = 0.26

Serum

 TMAO

8.96 (6.46; 11.85)

26.25 (25.30; 31.67)*

49.50 (45.84; 84.76)***

P < 0.001

 TMA

0.04 (0.03; 0.04)

0.14 (0.09; 0.17)*

0.32 (0.27; 0.64)***

P < 0.001

 Choline

75.92 (60.91; 104.79)

117.31 (93.88; 135.97)

95.77 (78.62; 110.24)

P = 0.13

 Carnitine

66.77 (60.34; 70.64)

74.90 (64.88; 80.64)

66.47 (57.60; 73.78)

P = 0.29

Urine

 TMAO

584.98 (448.50; 686.60)

6 143.59 (5 569.76; 6 449.26)*

14 049.76 (13 902.77; 15 586.82)***; #

P < 0.001

 TMA

15.18 (9.75; 20.99)

15.10 (12.94; 16.37)

257.37 (207.48; 324.83)***; ###

P < 0.001

 Choline

94.41 (69.78; 151.54)

135.07 (118.75; 160.19)

137.25 (129.10; 154.52)

P = 0.27

 Carnitine

169.45 (142.06; 232.12)

153.41 (141.67; 171.76)

134.18 (123.83; 165.68)

P = 0.23

  1. All data are expressed as the median (Q1; Q3); Kruskal–Wallis test followed by post-hoc Dunn’s test
  2. TMA trimethylamine,TMAO trimethylamine oxide, L group TMA low-dose group, H group TMA high-dose group
  3. *P < 0.05 vs control group; ***P < 0.001 vs control group; #P < 0.05 vs low dose group; ###P < 0.001 vs low dose group