Table 1.

Factor analysis was performed for the protein expression data from the PVN, BSTpr, MeApd and BLA of water control vs. sucrose-fed rats. The first two factors were identified; when combined these factors represent 44–69% of the data variability. Factor loadings of ≥ 0.6 (or ≤ −0.6) are listed; these reached criterion for classification as contributing to the respective factor (factor loadings that failed to reach criterion are not shown).

Brain region	Protein	Water		Sucrose
		Factor 1	Factor 2	Factor 1	Factor 2
PVN	Synaptophysin		0.98	0.99
	pCamKII
	pCREB	0.95			−0.78
	PSD95
	Gephyrin				1
	FosB/deltaFosB	0.76		0.75
BSTpr	Synaptophysin	0.85
	pCamKII			0.99
	pCREB		0.96
	PSD95	−0.75			1
	Gephyrin	0.86
MeApd	Synaptophysin	0.85
	pCamKII			0.69
	pCREB	−0.93
	PSD95			0.9
	Gephyrin				0.86
	FosB/deltaFosB		0.85
BLA	Synaptophysin
	pCamKII		0.83	−0.7
	pCREB
	PSD95	0.94		0.67	−0.74
	Gephyrin	0.87
	FosB/deltaFosB				0.68