. 2011 Jul 11;6(7):e21643. doi: 10.1371/journal.pone.0021643

Table 2. Lipid classes, species and their mass levels in Alzheimer and control subjects^a.

Lipid Class	# of Species	ControlMean ± SD	ADMean ± SD	P
PC	65	30±9	25±5.1	0.022
PE	86	1.66±0.54	1.53±0.52	0.41
PI	25	0.51±0.15	0.44±0.15	0.11
SM	33	9.35±3.78	7.33±2.38	0.026
LPC	14	2.57±0.70	2.41±0.59	0.39
Ceramide	29	0.21±0.08	0.23±0.07	0.26
Free.Chol.	1	16±6.2	16±6	0.85
Chol.Ester	NA	32±13	32±13	0.96
TAG	>500	11.6±5.5	13.5±6.0	0.24

SD denotes standard deviation. P values were computed by Welch two-sample t-test. All the results are obtained by shotgun lipidomics as described under Materials and Methods and presented in unit of nmol/mg protein. See text for abbreviations.

Table 2. Lipid classes, species and their mass levels in Alzheimer and control subjectsa.

Table 2. Lipid classes, species and their mass levels in Alzheimer and control subjects^a.