Representative image of western blotting (A,C) and protein levels of total myocardial connexin-43 (Cx43, A,B), connexin-43 phosphorylated at Serine368 (P-Cx43368, C,D) and ratio of P-Cx43368 to Cx43 (E) in the left ventricles of male normotensive and hypertensive rats fed with omega-3. Results were normalized to glyceraldehyde-3-phosphate dehydrogenase protein level (GAPDH). WISc—wistar control rats; WISo3— WISc fed with omega-3; SHRc—spontaneously hypertensive rats; SHRo3—SHRc fed with omega-3. n = 6 in each group. Data are presented as means ± SEM; * p < 0.05 versus WISc; # p < 0.05 versus SHRs.