Table 2

Studies of respiratory chain compounds and mitochondrial DNA

ComplexControls (n = 29) (mean (SD))Patient II-8 (case 4)Patient III-5 (case 6)Patient III-7 (case 7)Patient III-10
(case 5)
Total I35  (14) 13 19 16 12
I (with rotenone)24 (13) 7 5 10
II + III22 (7)181615
III antim127 (33) 71 57 57 87
IV69 (24) 54 39 5785
Citrate synthetase (CS)140 (71)10519614497
III / CS1.08 (0.61) 0.53 0.32 0.40 0.90
IV / CS0.68 (0.46)0.51 0.22 0.400.90
I / CS0.21 (0.13) 0.07 0.03 0.07
IV / II+III3.35 (1.36)3.602.443.17
III / II+III6.34 (2.56)3.94 3.56 3.17
Mitochondrial DNANormalNormalNormalNormal
  • Values in bold were below the lowest control value. Rotenone = rotenone dependent activity; antim = antimycine dependent activity; — = not measured.