Background
Methods
Animal model
Transthoracic echocardiography
Invasive right heart hemodynamic measurements
Histopathological analysis
Quantitative real time-polymerase chain reaction
-
rat LC3 (NCBI accession number: NM_199500.2): 5′-CGAGAGCGAGAGAGATGAAGACGG-3′ (sense) and 5′-GGTAACGTCCCTTTTTGCCTTGGTA-3′ (antisense);
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rat GAPDH (NCBI accession number: NM_017008): 5′-TCCATGACAACTTTGGCATCGTGG-3′ (sense) and 5′-GTTGCTGTTGAAGTCACAGGAGAC-3′ (antisense).
Immunohistochemistry
Transmission electron microscopy
Western blot analysis
Statistical analysis
Results
General features of MCT model
Group | CON-2 W (n = 8) | MCT-2 W (n = 12) | CON-4 W (n = 8) | MCT-4 W (n = 10) | CON-6 W (n = 8) | MCT-6 W (n = 8) |
---|---|---|---|---|---|---|
RVSP (mmHg) | 23.3 ± 1.8 | 30.1 ± 1.5*
| 23.9 ± 1.6 | 37.1 ± 2.7**※
| 24.7 ± 2.1 | 51.1 ± 3.7 **※※△
|
RVWT (mm) | 0.911 ± 0.09 | 0.976 ± 0.15*
| 0.924 ± 0.11 | 1.18 ± 0.16**※
| 0.932 ± 0.12 | 1.45 ± 0.13**※※△
|
RVEDD (mm) | 36.3 ± 1.2 | 36.9 ± 1.1 | 37.9 ± 1.4 | 51.4 ± 2.9*※※
| 38.7 ± 1.9 | 58.9 ± 2.7**※※△
|
BW (g) | 355 ± 13 | 344 ± 16 | 398 ± 14 | 361 ± 21*※
| 469 ± 17 | 357± 27**※※△
|
RVEDD/BW (mm/kg) | 11.8 ± 0.8 | 10.7 ± 0.9 | 11.1 ± 0.7 | 14.1 ± 1.0*※
| 10.9 ± 0.9 | 17.3 ± 1.3**※※△
|
HR (bpm) | 375 ± 9 | 379 ± 8 | 383 ± 10 | 403 ± 8 | 374 ± 10 | 419 ± 13*
|
TAPSE (mm) | 0.28 ± 0.013 | 0.29 ± 0.019 | 0.29 ± 0.014 | 0.24 ± 0.015*※
| 0.30 ± 0.021 | 0.15 ± 0.026**※※△
|
RVEF (%) | 61.5 ± 3.1 | 59.01 ± 2.1 | 63.8 ± 2.1 | 49.5 ± 3.6*※
| 62.7 ± 2.9 | 35.5 ± 6.0**※※△
|
RV FAC (%) | 55.1 ± 2.9% | 54.1 ± 3.3% | 54.1 ± 3.1% | 43.5 ± 5.1%*※
| 56.1 ± 2.7% | 27 ± 3.9%**※※△
|
PAAT (ms) | 32.2 ± 0.10 | 29.2 ± 0.15*
| 32.1 ± 0.11 | 25.9 ± 0.17**※
| 31.4 ± 0.10 | 22.6 ± 0.19**※※△
|
Hemodynamics and echocardiographic properties
RV myocardial histology process
Group | CON-2 W (n = 8) | MCT-2 W (n = 12) | CON-4 W (n = 8) | MCT-4 W (n = 10) | CON-6 W (n = 8) | MCT-6 W (n = 8) |
---|---|---|---|---|---|---|
RV/LV + IVS (g/g) | 0.24 ± 0.02 | 0.27 ± 0.02*
| 0.25 ± 0.02 | 0.48 ± 0.06**※※
| 0.23 ± 0.03 | 0.62 ± 0.09 **※※△
|
RV/BW (g/kg) | 0.48 ± 0.02 | 0.53 ± 0.02*
| 0.49 ± 0.04 | 0.85 ± 0.06**※※
| 0.45 ± 0.03 | 1.22 ± 0.07**※※△
|