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. 2020 Jan;83:87–111. doi: 10.1016/j.bbi.2019.09.019

Table 1.

Metabolites differently expressed between males and females and in response to LPS. Statistical significance from 3-way ANOVAs followed by pairwise comparisons testing the effect of LPS within each sex, when appropriate. When significant genotype, sex and/or their interaction with treatment were observed, metabolites with VIP values below 1.5 were considered discriminant if pairwise comparisons confirmed genotype or sex differences in PBS-treated mice and/or a sexually dimorphic LPS response.

Genotype effect
(PBS-treated)
Sex effect
(PBS-treated)
Overall
LPS effect
LPS effect
in males
LPS effect
in females
Exact mass RT (min) Putative metabolite Formula Pathway VIP p vs. WT VIP p vs. males VIP p vs. PBS VIP p vs. PBS VIP p vs. PBS
Amino acid metabolism
131.09 11.79 (3R)-beta-Leucine
C6H13NO2
Valine, leucine and isoleucine degradation 1.37 2.04 <0.0001 0.75 0.39 0.64
103.10 15.33 Choline
C5H13NO
Glycine, serine and threonine metabolism 0.83 0.71 1.45 2.00 <0.0001 0.69
222.07 11.11 l-cystathionine
C7H14N2O4S
Glycine, serine and threonine metabolism
Methionine metabolism
1.35 1.39 0.01 0.89 0.65 0.88
149.05 8.79 l-methionine
C5H11NO2S
Methionine metabolism 0.69 0.57 2.92 <0.0001 2.14 <0.0001 1.88 <0.0001
165.05 9.32 l-methionine S-oxide
C5H11NO3S
Methionine metabolism 0.69 0.83 2.52 <0.0001 1.84 <0.0001 1.77 <0.0001
384.12 9.50 S-adenosyl-l-homocysteine
C14H20N6O5S
Methionine metabolism 0.92 1.18 0.91 1.70 0.0001 1.10 0.036
219.07 9.59 O-succinyl-l-homoserine
C14H20N6O5S
Methionine metabolism 0.72 1.18 2.04 <0.0001 1.31 0.03 1.50 <0.0001
398.14 11.02 S-adenosyl-l-methionine
C15H22N6O5S
Methionine metabolism
Arginine and proline metabolism
1.13 0.70 1.82 0.0002 1.30 1.37 0.0002
297.09 6.79 5′-methylthioadenosine
C11H15N5O3S
Methionine metabolism
Arginine and proline metabolism
1.31 1.57 0.0001 2.44 <0.0001 2.00 <0.0001 1.70 <0.0001
132.05 8.62 N-carbamoylsarcosine
C4H8N2O3
Arginine and proline metabolism 0.92 1.07 1.84 0.0002 1.37 0.004 1.21 0.005
231.07 8.97 N-succinyl-l-glutamate 5-semialdehyde
C9H13NO6
Arginine and proline metabolism 1.25 1.75 0.0005 0.72 1.34 0.009 1.37 0.005
104.02 9.07 Urea-1-carboxylate
C2H4N2O3
Arginine and proline metabolism 1.20 0.60 1.87 <0.0001 1.80 <0.0001 1.07 0.03 ↗in WT
188.13 16.71 Homoarginine
C7H16N4O2
Arginine and proline metabolism 1.17 1.88 <0.0001 1.06 0.63 1.38
133.04 10.25 l-aspartate
C4H7NO4
Arginine and proline metabolism
Lysine biosynthesis
1.00 1.39 1.02 1.78 0.004 0.97
276.13 10.24 N6-(l-1,3-Dicarboxypropyl)-l-lysine
C11H20N2O6
Lysine biosynthesis 1.16 1.52 0.002 0.72 0.32 0.93
203.08 9.24 N2-acetyl-l-aminoadipate
C8H13NO5
Lysine biosynthesis 1.31 1.75 0.001 0.90 0.75 1.14
161.07 10.10 l-2-aminoadipate
C6H11NO4
Lysine biosynthesis 1.44 1.69 0.008 0.80 1.06 0.78
129.08 9.34 l-pipecolate
C6H11NO2
Lysine degradation
Alkaloid biosynthesis I
1.38 1.65 <0.0001 0.91 0.86 0.79
151.06 5.15 (Z)-4-hydroxyphenylacetaldehyde-oxime
C8H9NO2
Tyrosine metabolism 1.28 1.85 <0.0001 0.82 0.97 0.57
190.05 8.17 [FA hydroxy,oxo(7:0/2:0)] 4-hydroxy-2-oxo-Heptanedioic acid
C7H10O6
Tyrosine metabolism 1.12 1.59 0.003 0.91 1.30 0.03 1.51 0.0002
165.08 8.00 l-phenylalanine
C9H11NO2
Phenylalanine, tyrosine and tryptophan biosynthesis 0.83 0.78 2.19 <0.0001 1.87 <0.0001 1.44 0.003 ↗in WT
204.09 9.16 l-tryptophan
C11H12N2O2
Phenylalanine, tyrosine and tryptophan biosynthesis Tryptophan metabolism 1.47 1.64 0.09 2.55 <0.0001 1.94 <0.0001 1.67 <0.0001
191.06 9.66 5-hydroxyindoleacetate
C10H9NO3
Tryptophan metabolism 1.07 0.84 2.32 <0.0001 2.04 <0.0001 1.31 0.0012
219.11 6.80 Pantothenate
C9H17NO5
beta-Alanine metabolism
Pantothenate and CoA biosynthesis
1.27 2.06 0.0001 0.75 0.93 1.16
160.08 6.83 d-alanyl-d-alanine
C6H12N2O3
d-Alanine metabolism
Peptidoglycan biosynthesis
1.35 0.03 2.08 <0.0001 0.99 0.98 0.72
612.15 11.03 Glutathione disulfide
C20H32N6O12S2
Glutamate metabolism
Glutathione metabolism
0.82 1.37 0.77 1.51 0.001 1.10
140.06 7.25 Methylimidazoleacetic acid
C6H8N2O2
Histidine metabolism 0.97 1.40 0.88 1.51 0.002 1.01
169.08 9.39 N(pi)-methyl-l-histidine
C7H11N3O2
Histidine metabolism 1.32 2.00 <0.0001 1.62 <0.0001 1.70 <0.0001 1.59 0.0005



109.02 10.64 Hypotaurine
C2H7NO2S
Taurine and hypotaurine metabolism 1.43 2.07 <0.0001 0.95 0.87 0.95



Carbohydrate metabolism
118.03 10.42 Succinate
C4H6O4
Citrate cycle (TCA cycle)
Glyoxylate and dicarboxylate metabolism
1.14 0.65 1.69 0.0003 1.40 0.005 1.18 0.01
192.03 8.66 Isocitrate
C6H8O7
Citrate cycle (TCA cycle)
Glyoxylate and dicarboxylate metabolism
1.34 1.91 <0.0001 0.96 1.02 0.82
134.02 10.92 (S)-malate
C4H6O5
Citrate cycle (TCA cycle)
Pyruvate metabolism
Glyoxylate and dicarboxylate metabolism
0.97 0.82 1.46 0.79 1.53 0.0001
90.03 7.25 (d)-lactate
C3H6O3
Pyruvate metabolism 0.90 0.95 1.88 1.08 1.55 <0.0001
379.10 9.05 (d)-S-lactoylglutathione
C13H21N3O8S
Pyruvate metabolism 0.90 0.93 1.26 0.53 1.63 0.0008
167.98 11.75 Phosphoenolpyruvate
C3H5O6P
Citrate cycle (TCA cycle)
Pyruvate metabolism
Glycolysis/Gluconeogenesis
1.08 1.48 <0.0001 1.23 1.79 0.01 0.78
88.01 6.81 Pyruvate
C3H4O3
Citrate cycle (TCA cycle)
Glycolysis/Gluconeogenesis
0.73 0.16 0.70 1.66 0.03 0.53
170.00 10.31 d-glyceraldehyde 3-phosphate
C3H7O6P
Glycolysis/Gluconeogenesis 0.87 0.33 1.70 0.0007 1.10 0.04 ↘in APP/PS1 1.28 0.003 ↘in APP/PS1
185.99 11.39 3-phospho-d-glycerate
C3H7O7P
Glycolysis/Gluconeogenesis
Glyoxylate and dicarboxylate metabolism
0.99 1.35 <0.0001 1.10 1.69 0.007 0.67
155.98 11.41 2-phosphoglycolate
C2H5O6P
Glyoxolate and dicatboxylate metabolism 1.28 2.11 <0.0001 1.08 1.54 0.0007 0.71
206.01 11.83 3-oxalomalate
C6H6O8
Glyoxolate and dicatboxylate metabolism 1.28 2.00 <0.0001 0.85 0.91 0.61
164.07 9.24 l-rhamnose
C6H12O5
Fructose and mannose metabolism 0.99 0.78 1.16 1.51 0.002 0.85
182.08 10.09 d-sorbitol
C6H14O6
Fructose and mannose metabolism 1.07 0.96 2.06 <0.0001 1.40 0.002 ↘in WT 1.65 <0.0001
276.02 11.62 6-phospho-d-gluconate
C6H13O10P
Pentose phosphate pathway 0.79 0.86 1.70 0.0006 1.07 0.08 1.33 0.001
154.00 8.48 Propanoyl phosphate
C6H13O10P
Propanoate metabolism
C5-Branched dibasic acid metabolism
1.05 0.85 0.98 1.53 0.0009 0.64
130.03 8.65 Itaconate
C5H6O4
C5-Branched dibasic acid metabolism
Citrate cycle (TCA cycle)
1.34 1.91 <0.0001 0.94 1.10 0.74
146.02 9.93 Methyloxaloacetate
C5H6O5
C5-Branched dibasic acid metabolism 1.20 1.53 0.006 0.95 0.88 0.94



Nucleotide metabolism
136.04 8.58 Hypoxanthine
C5H4N4O
Purine metabolism 0.77 0.78 1.00 1.66 0.03 0.94
168.03 9.07 Urate
C5H4N4O3
Purine metabolism 0.22 0.59 2.17 <0.0001 1.77 <0.0001 1.34 0.006
463.07 11.88 N6-(1,2-Dicarboxyethyl)-AMP
C14H18N5O11P
Purine metabolism 0.85 0.71 1.52 0.69 1.52 <0.0001
156.02 7.91 Orotate
C5H4N2O4
Pyrimidine metabolism 1.21 1.58 0.005 0.83 1.08 1.18 0.01
242.09 6.82 Thymidine
C10H14N2O5
Pyrimidine metabolism 0.57 0.26 2.05 <0.0001 1.88 0.002 1.18 0.0007
126.04 6.82 Thymine
C5H6N2O2
Pyrimidine metabolism 0.74 0.98 1.87 <0.0001 1.77 0.002 1.03 0.005
114.04 7.17 5,6-dihydrouracil
C4H6N2O2
Pyrimidine metabolism
Beta-Alanine metabolism
Pantothenate and CoA biosynthesis
0.70 0.88 0.77 1.52 0.0007 0.93



Lipid metabolism and Fatty acyls
284.27 3.88 Octadecanoic acid
C18H36O2
Fatty acids biosynthesis
Biosynthesis of unsaturated fatty acids
1.13 0.99 1.50 0.004 ↘in WT 0.89 1.46 0.005
256.24 3.91 Hexadecanoic acid
C16H32O2
Biosynthesis of unsaturated fatty acids 1.21 1.18 1.52 0.002 0.92 1.35 0.01
306.25 3.88 Icosatrienoic acid
C20H34O2
Biosynthesis of unsaturated fatty acids 0.70 094 0.88 0.57 1.41 0.001
304.24 3.88 [FA (20:4)] 5Z,8Z,11Z,14Z-eicosatetraenoic acid
C20H32O2
Fatty Acids and Conjugates 0.96 0.85 1.32 0.42 1.62 <0.0001
118.06 5.16 Formyl 3-hydroxy-butanoate
C5H10O3
Fatty esters 1.44 2.17 <0.0001 0.97 1.16 0.88
172.01 10.13 sn-glycerol 3-phosphate
C3H9O6P
Glycerolipid metabolism
Glycerophospholipid metabolism
0.99 1.34 0.98 0.76 1.33 0.0009
306.26 3.88 sn-glycero-3-Phosphoethanolamine
C5H14NO6P
Glycerophospholipid metabolism
Ether lipid metabolism
1.26 1.37 1.79 0.47 1.69 <0.0001
393.29 4.82 PGH2-EA
C23H39NO4
Eicosanoids 1.11 1.05 1.73 0.0003 1.40 0.01 1.18 0.005



Energy Metabolism
506.99 10.98 ATP
C10H16N5O13P3
Oxidative phosphorylation
Purine metabolism
1.04 0.80 1.97 <0.0001 1.47 0.002 1.28 0.0004
340.00 11.91 d-fructose 1,6-bisphosphate
C6H14O12P2
Carbon fixation 1.04 1.54 0.002 1.44 0.0005 1.15 0.05 1.21 0.003
370.01 12.01 d-sedoheptulose 1,7-bisphosphate
C7H16O13P2
Carbon fixation 1.23 1.22 1.32 0.81 1.52 <0.0001



Metabolism of Cofactors and Vitamins
73.02 10.25 Iminoglycine
C2H3NO2
Thiamine metabolism 0.71 0.98 1.00 1.56 0.001 0.91
152.06 6.87 N1-methyl-2-pyridone-5-carboxamide
C7H8N2O2
Nicotinate and nicotinamide metabolism 0.81 0.61 2.73 <0.0001 2.25 <0.0001 1.62 <0.0001



Peptides
276.10 11.03 Gamma glutamylglutamic acid
C10H16N2O7
Peptide 0.95 0.94 0.89 1.59 0.005 0.90
262.08 9.71 l-beta-aspartyl-l-glutamicacid
C9H14N2O7
Peptide 1.52 0.03 ↘in ♀ 0.82 0.65 0.56 0.58
357.13 7.80 Asp-Ser-His
C13H19N5O7
Basic peptide 0.71 0.74 1.54 0.005 0.82 1.36 0.002
508.18 6.81 Asn-Met-Met-Asn
C18H32N6O7S2
Hydrophobic peptide 0.52 1.01 1.60 1.57 0.003 0.95
482.20 8.23 Asp-Phe-Thr-Thr
C21H30N4O9
Hydrophobic peptide 1.34 0.03 ↗in ♂ 1.59 0.003 0.86 0.69 0.64
360.14 8.79 Asn-Asn-Asn
C12H20N6O7
Polar peptide 0.72 0.15 2.87 <0.0001 2.10 <0.0001 1.85 <0.0001



Biosynthesis of Polyketides and nonribosomal Peptides
509.33 4.64 Narbomycin
C28H47NO7
Biosynthesis of 12-, 14- and 16-membered macrolides 0.61 0.29 2.14 <0.0001 1.44 0.003 1.50 <0.0001
515.18 11.20 13-dihydrocarminomycin
C26H29NO10
Biosynthesis of type II polyketide products 1.21 1.71 0.004 0.84 0.86 0.69



Biosynthesis of Secondary metabolites
200.08 7.89 Dihydroclavaminic acid
C8H12N2O4
Clavulanic acid biosynthesis 1.27 2.04 <0.0001 0.80 0.79 0.83



Not known
102.08 16.19 γ-aminobutyramide
C4H10N2O
N known 1.23 1.73 0.004 0.77 1.48 0.003 1.37 0.006
274.05 10.27 1-deoxy-d-altro-heptulose 7-phosphate
C7H15O9P
Not known 1.13 1.19 1.24 1.65 0.01 0.58
281.11 10.68 1-methyladenosine
C11H15N5O4
Not known 1.54 0.03 ↗in ♀ 0.61 0.1 0.79 0.53
367.27 4.95 3,5-tetradecadiencarnitine
C21H37NO4
Not known 1.06 1.24 1.57 0.002 1.15 0.01 1.44 0.04
181.99 9.73 3-methylphosphoenolpyruvate
C4H7O6P
Not known 1.20 1.77 <0.0001 0.88 0.75 0.83
181.10 8.58 6-methyltetrahydropterin
C7H11N5O
Not known 1.00 1.11 0.83 1.79 0.0006 1.05 0.02
430.20 5.36 Athamantin
C24H30O7
Not known 1.31 1.79 0.01 0.85 0.78 0.65
348.11 9.24 Camptothecin
C20H16N2O4
Not known 0.97 0.72 1.59 0.02 1.37 0.009 ↘in WT 1.11
158.06 4.39 Dimethyl citraconate
C7H10O4
Not known 0.97 1.72 0.0005 0.53 0.92 1.11
159.13 9.46 dL-2-sulfoctanoicacid
C8H17NO2
Not known 1.09 1.67 0.0002 0.60 0.41 0.88
425.35 4.65 Elaidiccarnitine
C25H47NO4
Not known 1.20 1.44 1.53 0.004 1.19 0.04 ↗in APP/PS1 1.14 0.03 ↗in WT
275.14 8.59 Glutarylcarnitine
C12H21NO6
Not known 1.36 1.89 0.007 0.68 0.70 0.87
246.05 8.65 Glycerophosphoglycerol
C6H15O8P
Not known 1.28 1.52 0.003 1.29 0.68 1.49 0.0001
423.33 4.68 Linoelaidylcarnitine
C25H45NO4
Not known 1.28 1.42 1.52 0.003 1.24 0.02 0.98 0.04
216.12 10.34 N-acetyl-(l)-arginine
C8H16N4O3
Not known 1.15 0.03 ↘in ♀ 1.53 0.005 0.87 0.76 1.28 0.0008
202.14 14.08 NG,NG-dimethyl-l-arginine
C8H18N4O2
Not known 1.22 0.97 1.32 1.60 0.001 0.81
243.09 8.89 Nocardicin C
C23H26N4O8
Not known 0.91 0.71 1.65 0.71 1.53 <0.0001
175.03 5.16 Nonulose 9-phosphate
C9H19O12P
Not known 1.15 1.48 0.004 1.81 1.91 <0.0001 0.70
249.03 12.35 Norepinephrinesulfate
C8H11NO6S
Not known 0.97 1.87 0.003 0.75 1.35 0.008 0.72
288.06 8.85 Orotidine
C10H12N2O8
Not known 1.29 1.56 0.0003 0.92 0.59 1.19 0.007
371.30 4.84 Tetradecanoylcarnitine
C21H41NO4
Not known 1.22 1.53 0.04 1.00 0.90 0.77
573.09 8.83 GDP-3,6-dideoxy-d-galactose
C16H25N5O14P2
Not known 1.17 0.81 1.10 1.79 0.002 0.63
133.07 6.76 N-hydroxyvaline
C5H11NO3
Linamarin biosynthesis 1.29 1.70 <0.0001 2.45 <0.0001 2.14 <0.0001 1.61 <0.0001

PBS: Phosphate-buffered saline; WT: wild-type; ♀: female; ♂: male.