Effects of Epigallocatechin Gallate on Tissue Lipid Peroxide Levels in Traumatized Spinal Cord of Rat

Authors

1 Razi Herbal Medicine Research Center, Lorestan University of Medical Sciences, Khoramabad, Iran

2 Department of Biochemistry, Lorestan University of Medical Sciences, Khoramabad, Iran

Abstract

Objective(s)
Recent studies revealed the neuroprotective effects of epigallocatechin gallate (EGCG) on a variety of neural injury .The purpose of this study was to determine the effects of EGCG on the tissue lipid peroxidation after spinal cord injury (SCI).
Materials and Methods
Rats were randomly divided into four groups of 7 rats each as follows: sham-operated group, trauma group, and EGCG-treatment groups (50 mg/kg, i.p., immediately and 1 hr after SCI). The rats were euthanized 24 hr after injury and then, spinal cord samples were taken for determination of malodialdehyde levels, as an indicator of lipid peroxidation.
Results
The results showed that MDA levels were significantly decreased in EGCG-treatment groups.
Conclusion
On the basis of these findings, we propose that EGCG may be effective in protection of spinal cord tissue from injury.

Keywords


1.Amar AP, Levy ML. Pathogenesis and pharmacological strategies for mitigating secondary damage in acute spinal cord injury. Neurosurgery 1999; 44:1027-1039.
2.Hall ED. The role of oxygen radicals in traumatic injury: clinical implications. J Emerg Med 1993; 11:31-36.
3.Popovich PG, Wei P, Stokes BT. Cellular inflammatory response after spinal cord injury in Sprague-Dawley and Lewis rats. J Comp Neurol 1997; 377:443-64.
4.Popovich PG, Stokes BT, Whitacre CC. Concept of autoimmunity following spinal cord injury: possible roles for T lymphocytes in the traumatized central nervous system. J Neurosci Res 1996 ; 45:349-63.
5.Mautes AE, Weinzierl MR, Donovan F, Noble LJ. Vascular events after spinal cord injury: contribution to secondary pathogenesis. Phys Ther 2000; 80:678-687.
6.Sutherland BA, Rahman RM, Appleton I. Mechanisms of action of green tea catechins, with a focus on ischemia-induced neurodegeneration. J Nutr Biochem 2006; 17:291-306.
7.Kimura M, Umegaki K, Kasuya Y, Sugisawa A, Higuchi M. The relation between single/double or repeated tea catechin ingestions and plasma antioxidant activity in humans. Eur J Clin Nutr 2002; 56:1186-1193.
8.Choi YB, Kim YI, Lee KS, Kim BS, Kim DJ. Protective effect of epigallocatechin gallate on brain damage after transient middle cerebral artery occlusion in rats. Brain Res 2004; 1019:47-54.
9.Wei H, Wu YC, Wen CY, Shieh HY. Green tea polyphenol (-)-epigallocatechin gallate attenuates the neuronal NADPH-d/nNOS expression in the nodose ganglion of acute hypoxic rats. Brain Res 2004; 999:73-80.
10.Lin AM, Chyi BY, Wu LY, Hwang LS, Ho LT. The antioxidative property of green tea against iron-induced oxidative stress in rat brain. Chin J Physiol 1998; 41:189-194.
11.He M, Zhao L, Wet MJ, Yao WF, Zhao HS, Chen FJ. Neuroprotective effects of (-)-Epigallocatechin-3-gallate on aging mice induced by D- galactose. Biol Pharm Bull 2009; 32:55-60.
12.Paterniti I, Genovese T, Crisafulli C, Mazzon E, Dipaola R, Galuppo M, et al. Treatment with green tea extract attenuates secondary inflammatory response in an experimental model of spinal cord trauma. Naunyn Schmiedebergs Arch Pharmacol 2009; 380:179-192.
13.Mihara S, Uchiyama M. Determination of malonaldehyde precursor in tissues by thiobarbituric acid test. Anal Biochem 1978; 86:271-278.
14.Liu XZ, Xu XM, Hu R, Du C, Zhang SX, Mcdonald JW, et al. Neuronal and glial apoptosis after traumatic spinal cord injury. J Neurosci 1997; 17:5395-406.
15.Kwon BK, Tetzlaff W, Grauer JN, Beiner J, Vaccaro AR. Pathophysiology and pharmacologic treatment of acute spinal cord injury. Spine J 2004; 4:451-464.