Body adiposity dictates different mechanisms of increased coronary reactivity related to improved in vivo cardiac function

Table 4 Activities of the respiratory chain complexes in myocardial biopsies

Enzyme		C	HF-	HF+
CS	mU./mg	4.3 ± 0.1	4.4 ± 0.2	4.6 ± 0.4
C1	U./U. CS	0.24 ± 0.01	0.20 ± 0.02	0.21 ± 0.03
	mU./mg	1.05 ± 0.05	0.82 ± 0.07	0.99 ± 0.22
C2	U./U. CS	0.20 ± 0.01^a	0.17 ± 0.01^b	0.17 ± 0.01^b
	mU./mg	0.85 ± 0.03	0.78 ± 0.05	0.79 ± 0.08
C3	U./U. CS	0.068 ± 0.004^a	0.050 ± 0.005^b	0.064 ± 0.002^a
	mU./mg	0.29 ± 0.01^a	0.21 ± 0.02^b	0.29 ± 0.03^a
C4	U./U. CS	0.024 ± 0.001	0.020 ± 0.002	0.020 ± 0.002
	mU./mg	0.101 ± 0.006	0.079 ± 0.006	0.094 ± 0.013

The number of experiments was 6 per group. Citrate synthase (CS) activities were expressed in mU./mg of myocardial proteins. Complex 1, 2, 3 and 4 (C1, C2, C3, C4) activities were expressed either in mU./mg of myocardial proteins (mU./mg) or in units/unit of citrate synthase activity (U./U. CS). C: control group; HF-: high fat-fed animals without weight gain compared to the control group; HF+: high fat-fed animals with weight gain compared to the control group; ^{a, b}: two means located on a same line without a common letter are significantly different.

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