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Open Access Highly Accessed Research article

Effect of Coenzyme Q10 on ischemia and neuronal damage in an experimental traumatic brain-injury model in rats

Murat Kalayci1*, Mufit M Unal1, Sanser Gul1, Serefden Acikgoz2, Nilufer Kandemir3, Volkan Hanci4, Nurullah Edebali1 and Bektas Acikgoz1

Author affiliations

1 Department of Neurosurgery, Faculty of Medicine, Zonguldak Karaelmas University, 67600, Kozlu, Zonguldak/TURKEY

2 Department of Biochemistry, Faculty of Medicine, Zonguldak Karaelmas University, 67600, Kozlu, Zonguldak/TURKEY

3 Deparment of Pathology, Faculty of Medicine, Zonguldak Karaelmas University, 67600, Kozlu, Zonguldak/TURKEY

4 Department of Anesthesiology; Faculty of Medicine, Zonguldak Karaelmas University, 67600, Kozlu, Zonguldak/TURKEY

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Citation and License

BMC Neuroscience 2011, 12:75  doi:10.1186/1471-2202-12-75

Published: 29 July 2011

Abstract

Background

Head trauma is one of the most important clinical issues that not only can be fatal and disabling, requiring long-term treatment and care, but also can cause heavy financial burden. Formation or distribution of free oxygen radicals should be decreased to enable fixing of poor neurological outcomes and to prevent neuronal damage secondary to ischemia after trauma. Coenzyme Q10 (CoQ10), a component of the mitochondrial electron transport chain, is a strong antioxidant that plays a role in membrane stabilization. In this study, the role of CoQ10 in the treatment of head trauma is researched by analyzing the histopathological and biochemical effects of CoQ10 administered after experimental traumatic brain injury in rats. A traumatic brain-injury model was created in all rats. Trauma was inflicted on rats by the free fall of an object of 450 g weight from a height of 70 cm on the frontoparietal midline onto a metal disc fixed between the coronal and the lambdoid sutures after a midline incision was carried out.

Results

In the biochemical tests, tissue malondialdehyde (MDA) levels were significantly higher in the traumatic brain-injury group compared to the sham group (p < 0.05). Administration of CoQ10 after trauma was shown to be protective because it significantly lowered the increased MDA levels (p < 0.05). Comparing the superoxide dismutase (SOD) levels of the four groups, trauma + CoQ10 group had SOD levels ranging between those of sham group and traumatic brain-injury group, and no statistically significant increase was detected. Histopathological results showed a statistically significant difference between the CoQ10 and the other trauma-subjected groups with reference to vascular congestion, neuronal loss, nuclear pyknosis, nuclear hyperchromasia, cytoplasmic eosinophilia, and axonal edema (p < 0.05).

Conclusion

Neuronal degenerative findings and the secondary brain damage and ischemia caused by oxidative stress are decreased by CoQ10 use in rats with traumatic brain injury.