Table 3 of Chu, Mol Vis 2022; 28:230-244.


Table 3. Targeting analysis of key metabolites of diabetic macular edema (DME) and the diabetes mellitus (DM) control groups (n=18 for each group) using exact mass quantification.

Metabolite Ionization species Mass (m/z) Fold change (DME/DM) p-value
Methylselenic acid* [M+Cl]- 162.9053 1.697 0.018
Homovanillic acid*** [M+H-H2O]+ 165.0519 2.170 3.58439E-06
L-Homocysteine* [M+K]+ 173.9989 0.354 0.05
2-Undecenoic acid*** [M+H]+ 185.1565 1.601 0.000252385
b-Glucose*** [M+Na]+ 203.0503 1.172 1.20122E-05
5-Hydroxytryptophan*** [M+H-H2O]+ 203.0869 2.206 5.50427E-05
7,8-Diaminononanoate*** [M+Na]+ 211.1454 1.969 0.000150843
Dehydroascorbic acid** [M+CH3COO]- 233.0307 >1000 0.003
Sorbitol-6-phosphate*** [M+Na]+ 285.0346 0.662 6.81668E-05
13,14-dihydro-15-keto-tetranor PGF1α* [M+H]+ 301.2019 1.779 0.028
Glutathione amide*** [M+Na]+ 329.0886 0.533 0.00035509
19(R)-hydroxy-PGF1α* [M-H2O-H]- 353.2348 1.782 0.037
Decanoyl-L-carnitine*** [M+CH3COO]- 374.2586 1.571 0.000425371
C16 sphingosine-1-phosphate*** [M+CH3COO]- 410.2352 1.485 8.64966E-05
Se-Adenosylselenohomocysteine*** [M+H]+ 433.0747 0.650 1.61927E-06
Uridine diphosphate (UDP)** [M+CH3COO]- 463.0174 <0.01 0.007