FN1 and congestive heart failure: The expression of COL1, COL3 and FN1 was significantly reduced in the ENA group (COL1, p < 0.01; COL3, p < 0.05; FN1, p < 0.05), the LC group (COL1, p < 0.001; COL3, p < 0.05; FN1, p < 0.05) and the HC group (COL1, p < 0.001; COL3, p < 0.001; FN1, p < 0.05) compared to the CHF group.