Abstract Title:

[Effect of sijunzi decoction on malondialdehyde content and telomerase activity in heart, liver and brain tissues of D-galactose induced aging model mice].

Abstract Source:

Biosci Biotechnol Biochem. 2006 May;70(5):1118-26. PMID: 16025969

Abstract Author(s):

Jing Yang, Xiang-hong Zhan, Ye Sun

Article Affiliation:

Changchun College of Traditional Chinese Medicine, Changchun. [email protected]

Abstract:

OBJECTIVE: To investigate the effect of Sijunzi decoction (SJZD) on malondialdehyde (MDA) content and telomerase activity in heart, liver and brain tissues of D-galactose (D-gal) induced aging model mice.

METHODS: D-gal aging mice model was established by cervicodorsal region subcutaneous injection with 10% D-gal once a day for six successive months. The model mice in the low-, middle- and high-dose SJZD treated groups were treated with SJZD in a dose of 6 g/kg, 12 g/kg, 24 g/kg per day respectively in the volume of 0.2 ml/10 g for 6 successive weeks. While the mice in the normal control group (NCG, non-modeled) and the model control group (MCG, modeled but untreated) were treated with distilled water instead. The MDA content and telomerase activity in heart, liver and brain tissues of mice was measured with TBA colorimetric method and PCR-ELISA respectively.

RESULTS: In MCG, the MDA content in heart, liver and brain tissues was significantly higher (P<0.01), and the telomerase activity in liver and heart tissues was significantly lower (P<0.01) but that in brain tissue was insignificant different to that in NCG (P>0.05) respectively. As compared with MCG, the MDA content was significantly lower in the three SJZD treated group (P<0.01). In comparison of telomerase activity between MCG and SJZD treated groups, it was shown that in heart tissue, there was an increased trend of the activity in the low-dose and middle-dose group, but with statistical insignificance (P>0.05), but it did show a significant increase in the high-dose group (P<0.05); in liver tissue no significant difference was shown between the three SJZD treated groups and MCG (P>0.05); as for that in brain tissue, significant increase only shown in the high-dose group (P<0.01).

CONCLUSION: SJZD can antagonize free radical injury, decrease the MDA content of heart, liver and brain in D-gal aging mice, and increase the telomerase activity in heart and brain tissues but with no effect on that in liver tissue.

Study Type : Animal Study

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Sayer Ji
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