Abstract
To investigate the expression and correlation of B-cell lymphoma-2 (Bcl-2) and Bax in the parotid gland after leading duct ligation in rat. Atrophy of the right parotid was induced by ligating the right Stensen's duct of rats. Immunohistochemical labeling was performed to study the changes in number and distribution of Bcl-2 and Bax in each step of glandular atrophy, and every group at 1, 3, 5, 7, 14, 21, 30, 60, 90, 150, 180 days after ligation. Bcl-2 and Bax showed a low level of expression in normal glandular tissues. At different time points after the ligation of the main duct, Bcl-2 was highly expressed in the duct cells, and the absorbance value reached a peak value at 21-day (3.02+0.10). The 1 D expression of Bax was found in some of the cells in the 3 D, and the expression of Bax reached the peak (1.99+0.10), and the expression of Bcl-2 and Bax were decreased in some cells. Bcl-2/Bax ratio increased at 1 day-21 day, and then decreased and stabilized. The expression of Bax and Bcl-2 after ligation of the parotid gland is closely related to the process of the parotid gland atrophy.
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