Table 4.

Sums and ratios of Sphingolipids concentrations in uterine luminal fluid from Control (Con) and Pregnant (Preg) cows.

Metabolite groups	Group		P valuea	Log2 Fold-changeb
	Con (n = 8)	Preg (n = 10)
Total SM	36.87 ± 6.50	28.84 ± 4.49	0.31	−0.36
Total SM-OH	4.76 ± 0.85	3.18 ± 0.43	0.09	−0.58
Ratio SM/SM-OH	7.85 ± 0.39	9.02 ± 0.51	0.13	0.20
Total unsaturated SM	5.40 ± 0.96	4.31 ± 0.68	0.36	−0.32
Total saturated SM	31.47 ± 5.55	24.53 ± 3.85	0.31	−0.36

Metabolites were grouped in sphingomyelins (SM) and hydroxysphingomyelins (SM-OH) and according to the unsaturation. Values are expressed as nmol/cm² of endometrial area; mean ± SEM. Metabolite groups definitions are in Supplemental Table S2.

Group of metabolites in bold tended to be different between Con and Preg group.

^aStatistical analyses were carried out by one-way ANOVA.

^bData are represented as fold-change of the metabolite concentration between Preg and Con groups.