|
Human Endogenous Metabolite
|
Coenzyme Q9 (5 mg/kg; p.o.; once a day for 4 weeks) reduces myocardial ischemia/reperfusion injury.
CoQ
10
and CoQ
9
are components of themitochondrial respiratory chain in mammals and can regulate some mitochondrial proteins/functions. Soybean, corn, and rapeseed oils are very rich sources of CoQ
10
, whereas CoQ
9
has been found in high concentrations in corn oil.
The lack of a functional CoQ
9
protein in homozygous CoQ
9
mutant (CoQ
9
(X/X)) mice causes a severe reduction in the CoQ
7
protein and a widespread CoQ deficiency and accumulation of demethoxyubiquinone. The deficit in CoQ induces a brain-specific impairment of mitochondrial bioenergetics performance, a reduction in respiratory control ratio, ATP levels and ATP/ADP ratio and specific loss of respiratory complex I. These effects lead to neuronal death and demyelinization with severe vacuolization and astrogliosis in the brain of CoQ
9
(X/X) mice that consequently die between 3 and 6 months of age.
| Animal Model: | Male Hartley guinea pigs of about 350-400 g body weight |
| Dosage: | 5 mg/kg of body weight |
| Administration: | P.o.; once a day for 4 weeks |
| Result: | Nutritional supplementation of CoQ9 can reduce myocardial ischemia/reperfusion injury to the same extent as CoQ10. |