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. 2015 Mar 5;10(3):e0119117. doi: 10.1371/journal.pone.0119117

Correction: Pea Fiber and Wheat Bran Fiber Show Distinct Metabolic Profiles in Rats as Investigated by a 1H NMR-Based Metabolomic Approach

The PLOS ONE Staff
PMCID: PMC4351085  PMID: 25742634

There are errors in the Author Contributions. The correct contributions are: Conceived and designed the experiments: GL LX TF YC GJ HZ JW XC CW. Performed the experiments: GL LX TF JW. Analyzed the data: GL LX TF. Contributed reagents/materials/analysis tools: GL. Wrote the paper: GL.

Additionally, there is an error in the legends for Fig. 1 and Fig. 2. “Table 1” should say “Table 5.” Please view the complete, correct Fig. 1 and Fig. 2 legends below.

Fig 1. Representative one-dimensional 1H NMR spectra urine metabolites obtained from the (A) control, (B) pea fiber, and (C) wheat bran fiber groups.

Fig 1

The region of δ6.2–9.5 was magnified 16 times compared with corresponding region of δ0.5–6.2 for the purpose of clarity. Metabolite keys are given in Table 5.

Fig 2. Typical 600 MHz 1H NMR spectra of plasma metabolites obtained from the (A) control, (B) pea fiber, and (C) wheat bran fiber groups.

Fig 2

The region of δ6.0–9.0 was magnified 24 times compared with corresponding region of δ0.5–6.0 for the purpose of clarity. Metabolite keys are given in Table 5.

Table 5. 1H NMR data for metabolites in rat urine and plasma.

keys Metabolites moieties δ 1H (ppm) and multiplicity samples a
1 bile acids CH3 0.62(m), 0.75(m) U
2 Butyrate CH3 0.9(t) U
3 α-hydroxybutyrate CH3 0.94(t) U
4 α-hydroxy-iso-valerate δCH3 0.97(d) U
5 isobutyrate CH3 1.14(d) U, P
6 Ethanol CH3, CH2 1.19(t), 3.66(q) U, P
7 methylmalonate CH3, CH 1.26(d), 3.76(m) U
8 α-hydroxy-n-valerate CH3, γCH2 0.89(t), 1.31(m) U
9 lactate αCH, βCH3 4.13(q), 1.33(d) U, P
10 alanine αCH, βCH3 3.77(q), 1.48(d) U, P
11 citrulline γCH2, βCH2 1.56(m), 1.82(m) U
12 acetate CH3 1.92(s) U, P
13 acetamide CH3 1.99(s) U
14 N-acetylglutamate βCH2, γCH2, CH3 2.07(m), 1.88(m), 2.04(s) U
15 acetone CH3 2.25(s) U, P
16 acetoacetate CH3 2.3(s) U
17 succinate CH2 2.41(s) U
18 α-ketoglutarate βCH2, γCH2 2.45(t), 3.01(t) U
19 citrate CH2 2.55(d), 2.68(d) U, P
20 methylamine CH3 2.62(s) U
21 dimethylamine CH3 2.73(s) U
22 trimethylamine CH3 2.88(s) U
23 dimethylglycine CH3 2.93(s) U
24 creatine CH3, CH2 3.04(s), 3.93(s) U, P
25 creatinine CH3, CH2 3.04(s), 4.05(s) U, P
26 ethanolamine CH2 3.13(t) U
27 malonate CH2 3.16(s) U
28 choline OCH2, NCH2, N(CH3)3 4.07(t), 3.53(t), 3.20(s) U, P
29 taurine -CH2-S, -CH2-NH2 3.26(t), 3.43(t) U
30 glycine CH2 3.57(s) U
31 phenylacetyglycine 2,6-CH, 3,5-CH, 7-CH, 10-CH 7.31(t), 7.37(m), 7.42(m), 3.68(s) U
32 hippurate CH2, 3,5-CH, 4-CH, 2,6-CH 3.97(d), 7.57(t), 7.65(t), 7.84(d) U
33 N-methylnicotinamide CH3, 5-CH, 4-CH, 6-CH, CH2 4.44(s), 8.18(d), 8.89(d), 8.96(d), 9.26(s) U
34 β-glucose 1-CH, 2-CH, 3-CH, 4-CH, 5-CH, 6-CH 4.65(d), 3.25(dd), 3.49(t), 3.41(dd), 3.46(m), 3.73(dd), 3.90(dd) U, P
35 α-glucose 1-CH, 2-CH, 3-CH, 4-CH, 5-CH, 6-CH 5.24(d), 3.54(dd), 3.71(dd), 3.42(dd), 3.84(m), 3.78(m) U, P
36 allantoin CH 5.40(s) U, P
37 urea NH2 5.82(s) U
38 homogentisate 6-CH, 5-CH 6.7(d), 6.76(d), U
39 p-hydroxyphenylacetate 6-CH, 2-CH, 3,5-CH 3.6(s), 6.87(d), 7.15(d) U
40 m-hydroxyphenylacetate 6-CH, 4-CH, 3-CH 6.92(m), 7.04(d), 7.26(t) U
41 nicotinate 2,6-CH, 4-CH, 5-CH 8.62(d), 8.25(d), 7.5(dd) U
42 4-aminohippurate CH2 7.71(d) U
43 trigonelline 2-CH, 4-CH, 6-CH, 5-CH, CH3 9.12(s), 8.85(m), 8.83(dd), 8.19(m), 4.44(s) U
44 formate CH 8.46(s) U
45 unknown 8.54(s) U
46 HDL* CH3(CH2)n 0.84(m) P
47 LDL* CH3(CH2)n 0.87(m) P
48 VLDL* CH3CH2CH2C = 0.89(t) P
49 isoleucine αCH, βCH, βCH3, γCH2, δCH3 3.68(d), 1.99(m), 1.01(d), 1.26(m), 1.47(m), 0.94(t) P
50 leucine αCH, βCH2, γCH, δCH3 3.73(t), 1.72(m), 1.72(m), 0.96(d), 0.97(d) P
51 valine αCH, βCH, γCH3 3.62(d), 2.28(m), 0.99(d), 1.04(d) P
52 propionate CH3, CH2 1.08(t), 2.18(q) P
53 3-hydroxybutyrate αCH2, βCH, γCH3 2.28(dd), 2.42(dd), 4.16(m), 1.20(d) P
54 lipids (triglycerids and fatty acids) (CH2)n, CH2CH2CO, CH2C = C, CH2CO,C = CCH2C = C 1.28(m),1.58(m), 2.01(m), 2.24(m), 2.76(m) P
55 lysine αCH, βCH2, γCH2, εCH2 3.76(t), 1.91(m), 1.48(m), 1.72(m), 3.01(t) P
56 N-acetyl glycoprotein CH3 2.04(s) P
57 O-acetyl glycoprotein CH3 2.08(s) P
58 glutamate αCH, βCH2, γCH2 3.75(m), 2.12(m), 2.35(m) P
59 methionine αCH, βCH2, γCH2, S-CH3 3.87(t), 2.16(m), 2.65(t), 2.14(s) P
60 pyruvate CH3 2.37(s) P
61 glutamine αCH, βCH2, γCH2 3.78(m), 2.14(m), 2.45(m) P
62 glycerolphosphocholine CH3, βCH2, αCH2 3.22(s), 3.69(t), 4.33(t) P
63 phosphorylcholine N(CH3)3, OCH2, NCH2 3.22(s), 4.21(t), 3.61(t) P
64 myo-inositol 1,3-CH, 2-CH, 5-CH, 4,6-CH 3.60(dd), 4.06(t), 3.30(t), 3.63(t) P
65 threonine αCH, βCH, γCH3 3.58(d), 4.24(m), 1.32(d) P
66 unsaturated lipids = CH-CH2C =, -CH = CH- 5.19 (m), 5.30(m) P
67 tyrosine 2,6-CH, 3,5-CH 7.20(dd), 6.91(d) P
68 1-methylhistidine 4-CH, 2-CH 7.05(s), 7.78(s) P
69 phenylalanine 2,6-CH, 3,5-CH, 4-CH 7.32(m), 7.42(m), 7.37(m) P
70 3-methylhistidine 4-CH, 2-CH 7.07(s), 7.67(s) P

a U, urine; P, plasma;

* HDL, high density lipoprotein; LDL, low density lipoprotein; VLDL, very low density lipoprotein; s, singlet; d, doublet; t, triplet; q, quartet; dd, doublet of doublets; m, multiplet

Further, there is an error in the footnotes for Table 5. VLDL stands for “very low density lipoprotein,” not “low density lipoprotein.” Please view the complete, correct Table 5 footnotes below.

Reference


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