Fig. 5

Gene expression of neurotrophic factors. (A,B). The expression of Gdnf (A) and Ngf (B) in the inferior base and the inferior apex from Sham mice and Takotsubo syndrome mice were analyzed by quantitative reverse transcription polymerase chain reaction (n = 9, 9, 6, 5, 4, and 4, respectively). Statistical significance was determined using the Mann–Whitney U test. *P < 0.05 vs. Sham mice, **P < 0.01 vs. Sham mice. Error bars represent standard error of the mean.