Improved neuromuscular transmission in aged mice by SGα expression. A, B, Reduced ratio of 2nd–10th CMAP amplitudes over the first CMAP amplitude at 40 Hz stimulations. A, Representative traces; B, quantitative data; F(2,90) = 47.7, *p < 0.05, **p < 0.01, ***p < 0.001; N = 4 mice per group, two-way ANOVA. C, Frequency-dependent CMAP reduction. Shown were ratios of 10th over first CMAP amplitudes; F(2,45) = 25.2, **p < 0.01, ***p < 0.001; N = 4 mice per group, two-way ANOVA. D–F, Increased mEPP amplitudes of aged mice by AAV-mediated SGα expression. D, Representative mEPP traces. E, Comparable mEPP frequencies. F, Increased mEPP amplitudes in 24M-SGα mice compared with 24M-GFP mice; F(2,9) = 13.3, **p = 0.0021, *p = 0.012.