[Effect of different prescriptions for tonifying kidney on RNA transcription activity in isolated nuclei and protein synthesis activity in free-cell extracts of the different organs of presenile mice].

Objective: To study the anti-aging mechanism of Zuoguiyin (a prescription for tonifying Kindney Yin) and Yishenbao (a prescription for tonifying Kidney Yang) in presenile mice.

Methods: Using male, 14 months old presenile mice as a model of Kidney-Asthenia, the effects of Zuoguiyin and Yishenhao on RNA transcription activity in isolated nuclei and protein synthesis activity in free-cell extracts of the liver, brain, kidney and testes of the presenile mice were observed.

Results: RNA transcription activity in isolated nuclei and protein synthesis activity in free-cell extracts of the four organs of the presenile mice group were distinctly lower than those of young mice group (3 months old). After above-mentioned two prescriptions were given to the presenile mice for two months, RNA transcription activity in isolated nuclei and protein synthesis activity in free-cell extracts of the four organs of the two treated groups were obviously higher than those of control group (P < 0.05 or P < 0.01), but there was no difference between two treated groups.

Conclusions: Both Zuoguiyin and Yishenbao could promote RNA transcription activity in isolated nuclei and protein synthesis activity in free-cell extracts of Kidney-Asthenia and presenile mice.