Table 2.

Lactate production and mitochondrial membrane potential in platelets from aged female wild type (WT) and estrogen receptor β knockout (βERKO) mice (data are shown as mean ± SEM)

	WT (n = 8)	βERKO (n = 8)
Lactate production (nmol/µg protein)
Control	0.06 ± 0.01	0.05 ± 0.01
Antimycin A	0.12 ± 0.03	0.10 ± 0.02
Collagen	0.13 ± 0.02*	0.12 ± 0.02*
Mitochondrial membrane potential (% number of mitochondria)
Polarized	19 ± 9	32 ± 11
Partially polarized	8 ± 2	6 ± 2
Depolarized	56 ± 7	45 ± 10

^* P < 0.05, statistically significant from control