Compared to faecal samples of HC, some alcohols (e g , 1-octen-3-

The level of aldehydes did not differ (P > 0.05) between urine samples of T-CD and HC. Compared to faecal samples of HC, some alcohols (e.g., 1-octen-3-ol, ethanol and 1-propanol) were present at higher level in T-CD. Median values of alkane and alkene did not significantly (P > 0.05) differ between T-CD and HC. Overall, faecal samples of T-CD showed the lowest levels of aromatic organic compounds. The median value of total short chain fatty acids (SCFA) was significantly

(P < 0.05) higher in faecal samples HC compared to T-CD. Major differences were found for isocaproic, butyric and propanoic acids (P < 0.038, 0.021, and 0.012, respectively). On the contrary, acetic acid was higher in T-CD compared to HC samples. The Angiogenesis inhibitor differences of the metabolomes between faecal or urine samples of T-CD and HC was highlighted through CAP analysis which considered only significantly different compounds (Figure 7A and 7B). Variables appearing with negative values represent bins whose values decreased in T-CD compared to HC samples. On the check details contrary, variables represented with bars pointing to the right indicate bins whose values were the highest in T-CD samples. Table 3 Median values and ranges of the concentration (ppm) of volatile organic compounds (VOC) of faecal and urine samples from treated celiac disease (T-CD) children and non-celiac children (HC) as determined by gas-chromatography mass spectrometry/solid-phase

microextraction (GC-MS/SPME) analysis Chemical class Treated celiac disease (T-CD)children Non-celiac children (HC)   Faeces Urines Faeces Urines   Median Range Median Range Median Range Median Range Esters 20.31b 0 – 846.97 0.47c 0 – 40.00 47.73a 1.83 – 496.83 0.99c 0 – 8.05 Sulfur compounds 214.83b 0 – 890.86 1.46c 0 – 25.44 387.07a 0 – 499.88 3.49c 0 – 63.67 Ketones 90.88b 0 – 2402.50 54.01c 0 – 295.03 112.83a 0 – 416.20 64.49c 0 – 458.78 Hydrocarbons

16.69b 0 – 1327.15 4.25c 0 crotamiton – 67.07 119.13a 0.22 – 635.25 3.14c 0.15 – 62.56 Aldehydes 17.59c 0 – 512.28 64.31a 0.34 – 166.31 37.46b 2.08 – 365.25 73.37a 0.50 – 199.56 Alcohols 230.14a 0 – 2311.29 2.25c 0 – 17.5 122.56b 0 – 934.22 2.14c 0 – 34.96 Alkane 6.73a 0 – 653.61 0.3b 0.05 – 1.57 9.37a 0 – 432.74 0.43b 0 – 1.47 Alkene 0a 0 – 32.51 0a 0 0a 0 – 31.99 0a 0 Aromatic organic compounds 178.24b 0 – 143.67 2.10c 0.04 – 28.16 480.20a 233.74 – 993.94 2.78c 0 – 16.30 Heptane 23.01a 0 – 837.50 0c 0 – 1.37 26.37a 0 – 65.75 0.34b 0 – 2.37 Short chain fatty acids (SCFA) 21.64a 0 – 1438.28 3b 0.08 – 31.14 27.85a 0 – 1037.50 3.82b 1.44 – 24.87 Data are the means of three independent experiments (n = 3) for each children. a-cMeans within a row with different superscript letters are significantly different (P < 0.05).

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