Figure 2.

Myocardial mRNA expression of collagen type I (A), tissue inhibitors of metalloproteinases‐3 (B), connexin 43 (C), connexin 45 (D), transforming growth factor‐β (E), and interleukin 6 (F). Myocardial specimens were taken from SHRs (sham) not exposed to microcurrent (left) and after 45 days of microcurrent exposure (right) at termination of the experiment. A significant difference between the specimens was found in collagen type I (P < 0.003), tissue inhibitors of metalloproteinases‐3 (P < 0.014), connexin 43 (P < 0.005), connexin 45 (P < 0.020), transforming growth factor‐β (P < 0.005), and interleukin 6 (P < 0.000).