Mm. Pich et al., INHIBITOR SENSITIVITY OF RESPIRATORY COMPLEX-I IN HUMAN PLATELETS - APOSSIBLE BIOMARKER OF AGING, FEBS letters, 380(1-2), 1996, pp. 176-178
NADH-Coenzyme Q reductase was assayed in platelet mitochondrial membra
nes obtained from 19 pools of two venous blood samples from female you
ng (19-30 years) individuals and 18 pools from aged ones (66-107 years
). The enzyme activities were not significantly changed in the two gro
ups, but a decrease of sensitivity to the specific inhibitor, rotenone
, occurred in a substantial number of aged individuals, The results ar
e in agreement with the predictions of the mitochondrial theory of age
ing and may be used to develop a sensitive biomarker of the ageing pro
cess.