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. 2009 Aug 10;14(11):2667–2674. doi: 10.1111/j.1582-4934.2009.00879.x

Table 2.

Age-dependent mitochondrial OXPHOS activities in young (3 months), adult (17 months) and aged (36 months) male Wistar rats

Parameters OXPHOS Age
3 months 17 months 36 months
Complex I
RCI (S3.S4–1) 3.63 ± 0.19 3.25 ± 0.12 2.86 ± 0.08*+
ADP:O (nmol ADP.nAtO-1) 2.67 ± 0.02 2.76 ± 0.02* 2.63 ± 0.04+
QO2S3 (nAtO.mg prot-1.min-1) 76.73 ± 2.80 58.74 ± 2.89** 48.68 ± 1.76***+
QO2S4 (nAtO.mg prot-1.min-1) 21.98 ± 1.52 18.16 ± 0.75 17.14 ± 0.80
OPR (nmol ATP.mg prot-1.min-1) 205.23 ± 6.08 163.97 ± 9.35** 127.27 ± 5.26***++
Complex II
RCI (S3.S4–1) 1.66 ± 0.33 1.65 ± 0.06 1.64 ± 0.04
ADP:O (nmol ADP.nAtO-1) 1.69 ± 0.03 1.63 ± 0.04 1.72 ± 0.03
QO2S3 (nAtO.mg prot-1.min-1) 87.87 ± 4.36 68.20 ± 3.97** 51.04 ± 2.72***++
QO2S4 (nAtO.mg prot-1.min-1) 53.02 ± 2.93 41.66 ± 2.75* 31.33 ± 1.99***+
OPR (nmol ATP.mg prot-1.min-1) 205.23 ± 6.08 163.97 ± 9.35** 127.27 ± 5.26***++

Data are presented as mean ± S.E.M.

*

**P < 0.001, **P < 0.01, *P < 0.05 versus 3 month, ++P < 0.01, +P < 0.05 versus 17 month.