Characteristics of Bcl-2 and Bax expressions in rat brain after experimental intracerebral hemorrhage and intervention of naoyian granule
Zhang, H-xian.; Li, X-qun.; Tang, T.
Hunan Yi Ke Da Xue Xue Bao 28(3): 229-232
2003
ISSN/ISBN: 1000-5625 PMID: 14653074 Document Number: 564382
Objective: To investigate the characteristics of Bcl-2 and Bax expressions in rat brain after experimental intracerebral hemorrhagic (ICH), and to determine the protective mechanisms of the Traditional Chinese medicine complex, naoyian granule (NYA). Methods: ICH models were induced according to Rosenberg's method. The rats were divided into the model group, the NYA-treatment group and the sham group. Bcl-2 and Bax expressions in the rat brain after ICH were detected by immunohistochemistry method. Results: Bax expressed in the hemorrhagic core, and the immunoreactive neurons were seriously injuried and the shape varied. Bcl-2 expressed in the penumbra with the normal shape of the immunoreactive neurons. Both Bax and Bcl-2 expressed simultaneously in the marginal region of the cerebral hemorrhagic core. Bcl-2 expression in the rat brain reached the peak at the 2nd day and maintained at a relatively high level until the 7th day, and NYA could increase it. Bax expression peaked at the 1st day, and NYA could down-regulate it. Conclusion: The expressions of Bcl-2 and Bax after the cerebral hemorrhage are related to the degree of injury, the time, and the location of the brain tissues. NYA can up-regulate the Bcl-2 expression and down-regulate the Bax expression, which may be one of its neuroprotective mechanisms.