[Evaluation of oxidative stress in experimental rabbit aneurysms].
OBJECTIVE
To evaluate the roles of oxidative stress in the generation and development of aneurysms.


METHODS
Five terminal aneurysms and 8 lateral aneurysms were rebuilt on rabbits, and 6 normal artery vessels were prepared as control. The levels of malondialdehyde (MDA), superoxide dismutase (SOD), and anti-reactive oxygen species unit (anti-ROS unit) were measured with chemical methods.


RESULTS
The levels of MDA in terminal and lateral aneurysms were (33.85 +/- 8.66) and (27.87 +/- 5.78) nmol/mg prot, respectively, which were significantly higher than (10.91 +/- 2.72) nmol/mg prot in control group (P < 0.01). The levels of SOD in terminal and lateral aneurysms were (28.30 +/- 3.58) and (33.00 +/- 8.09) U/mg prot, respectively, which were significantly lower than (127.27 +/- 38.72) U/mg prot in control group (P < 0.01). The levels of anti-ROS unit in terminal and lateral aneurysms were (47.86 +/- 5.00) and (62.64 +/- 13.87) U/ mg prot, respectively, which were significantly lower than (116.94 +/- 9.22) U/mg prot in control group (P < 0.01). No significant differences were shown between terminal aneurysm and lateral aneurysm in MDA and SOD except anti-ROS unit (P = 0.014). MDA had negative correlations with both SOD and anti-ROS unit, and the correlation coefficients were -0. 830 and -0. 852, respectively.


CONCLUSIONS
Oxidative stress may play an important role in the development of aneurysms. Oxidative stress seems similar among various aneurysms.
Li
Li
L
Department of Interventional Neuroradiology, Beijing Neurosurgical Institute, Beijing 100050, China.
Yang
Xin-jian
XJ
Jiang
Fan
F
Liu
Ai-hua
AH
Wu
Zhong-xue
ZX
Dusting
Gregory J
GJ
D000783:Aneurysm / Q000145:classification / Q000378:metabolism*; D000818:Animals; D004195:Disease Models, Animal; D008315:Malondialdehyde / Q000378:metabolism*; D018384:Oxidative Stress; D011817:Rabbits; D017382:Reactive Oxygen Species / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism*
D017382:Reactive Oxygen Species; D008315:Malondialdehyde; D013482:Superoxide Dismutase