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. 2026 Jul 10;13:1884256. doi: 10.3389/fnut.2026.1884256

Table 2.

Correlation between log2FC and fatty acyl carbon chain length or degree of unsaturation within each lipid subclass.

Class Subclass Number of lipid species Carbon chain length Degree of unsaturation
ρ a p-valueb ρ a p-valueb
Glycerolipids TG 108 0.692 <0.001 0.407 <0.001
TG-O 3 0.103 0.735 0.255 0.400
DG 5 0.353 0.559 −0.666 0.218
Glycerophospholipids PC 66 0.323 0.008 −0.048 0.699
PC-O(P) 61 0.023 0.859 0.414 <0.001
PE 16 0.486 0.055 0.560 0.023
PE-O(P) 18 −0.301 0.224 0.148 0.556
LPE 7 0.889 0.007 0.654 0.110
LPC 28 0.747 <0.001 0.584 <0.001
LPC-O 5 −0.579 0.305 −0.866 0.0576
PI 16 0.463 0.070 0.120 0.656
Fatty acyls Car 17 −0.118 0.651 −0.078 0.764
FA 13 −0.118 0.651 −0.078 0.764
Sphingolipids Cer 19 0.027 0.910 −0.509 0.025
HexCer 8 −0.709 0.074 0.669 0.099
Hex2Cer 5 0.447 0.450 0.577 0.308
SM 56 0.141 0.298 −0.455 <0.001
Sterol lipids CE 8 0.600 0.115 0.574 0.136
ST 4 0.600 0.416 0.447 0.552
a

Spearman’s correlation coefficients are presented.

b

p-values were calculated using Spearman’s rank correlation test. TG, triglycerides; TG-O, ether-linked triglycerides; DG, diglycerides; PC, phosphatidylcholine; PC-O(P), ether-linked phosphatidylcholines; PE, phosphatidylethanolamines; PE-O(P), ether-linked phosphatidylethanolamines; LPE, lysophosphatidylethanolamines; LPC, lysophosphatidylcholines; LPC-O, ether-linked lysophosphatidylcholines; PI, phosphatidylinositols; Car, acylcarnitines; FA, fatty acids; Cer, ceramides; HexCer, hexosylceramides; Hex2Cer, dihexosylceramides; SM, sphingomyelins; CE, cholesteryl esters; ST, steroids.