AAV1/2-5LO over-expression modulates CREB levels and transcription of the γ-secretase complex in the brains of Tg2576 mice. A. Levels of total CREB and its phosphorylated form at Ser133 and Sp1 in the cortex of Tg2576 receiving AAV1/2-5LO or empty vector (CTL) assayed by western blot analyses. B. Densitometric analyses of the immunoreactivities to the antibodies shown in the previous panel. C. Relative mRNA levels for PS1, Nicastrin, APH-1 and Pen-2 in the cortex of Tg2576 mice receiving AAV1/2-5LO or empty vector (CTL), as determined by real-time quantitative RT-PCR amplification. Values represent mean ± SEM (*p < 0.01).