Review Article

Morphological and Functional Characteristics of Animal Models of Myocardial Fibrosis Induced by Pressure Overload

Table 1

Methods to establish an animal model.

ModelModeling methodMolding timeMortalitySuccess rate

SHR18 m [5, 9, 10]>50% [9]

Aortic Stenosis Model
TACLigation of the aortic arch18-G needle and 4-0 silk [15]8 w7.14%85.71
17-G needle and 6-0 silk [16]8 w
27-G needle and 7-0 silk4 w [1719] 1 w [20, 21]<25% [2225] 25%–50% [2628] 50%–75% [2931]28% [32]
20-G needle and 3-0 silk [33]6 w85%
22-G needle and 4-0 silk [34]2 w
18-G needle and 5-0 nylon [35]8 w75.76%
The titanium clamp (internal diameter: 0.45 mm) [36]3 w20%
26 G clip [37], 30 G clip [38, 39]4 w
Ascending aorta constriction modelLigation of the ascending aorta0.8 mm blunt steel wire and 3-0 silk [46]6 w7.7%82.82%
27-G needle and 7–0 silk [47]8 w70%
A titanium clip (50%–60% of original diameter) [43]21 m [48]20% [43]100% [48]
O-rings (ID of 0.61 mm or 0.66 mm) [49]4 w or 6 w1.3%
AACLigation of the abdominal aorta22-G needle and 2-0 silk [52] and 22-G needle and 4-0 silk [53]12 w
24-G needle and 2-0 silk [54]3 w8%
7-G needle and 4-0 silk [55]4 w18.8%100%
21-G needle and 4-0 silk [56]2 w

Renovascular model
2K1CLigation of unilateral renal arteryA polytetrafluoroethylene tubing (0.2 mm internal space) [59]3 d1.2%73.3 ± 15.4%
Stainless steel wire (diameter: 0.3 mm) [60]3 w100%
A silver clip (0.2 mm internal space)4 W [61], 15 d [62], 6 w [63], 7 w [64]
2K2CLigation of bilateral renal arteriesTwo silver clips (0.3 mm internal space)10 w [66, 67], 4 w [68]
1K1CLigation of unilateral renal artery after nephrectomyA silver clip (0.15 mm internal gap)4 w [70, 71]

Unilateral nephrectomy modelFive-sixth nephrectomy8 w [73, 76], 5 w [78]
4 w [77]20%
Right nephrectomy10 d [74]

Pulmonary hypertension model
PABLigation of the pulmonary arteryA surgical clip (internal diameter of 0.35 mm)3 w [83], 7 d [84]
18-G needle and 7-0 prolene suture [85]4 w35.71%
Vascular cuff (5 mm width) [86]3 w3.8%
16-G or 18-G and 7-0 prolene suture [87]21 d
Semiclosed clip (outer size: 18-G needle) [85]4 w46.43%
MCTInjection60 mg/Kg2 w [94], 3 w [93]
4 w31.58% [86] or 37.5% [95]
35 d [96]55%
50 mg/Kg2 w [97]
SU5416Injection20 mg/kg, 10% O25 w12.5% [105] or 25% [108]
8 w [106], 9 w [107]

Exogenous induction model
NaClFeeding8% NaCl13 w [112]68%
6 w [114]
8 w [115]
4 w [113]
14 w67% [116] or 25% [117]
18 w [118]25%
200 ng/kg/min [122], 1.5 µg/g/day [123], 0.83 μg/kg/min [124], 400 ng/kg/min [125], 0.7 mg/kg/d [126]4 w
Angiotensin IIOsmotic minipump0.2 or 2.0 μg/kg/min [121]4 w100%
1.5 mg/kg/day [130], 1000 ng/kg/min [128], 1.1 mg/kg/day [129], 800 ng/min/kg [127]2 w
Aldosterone aloneOsmotic minipump0.2 mg/kg/day [135], 200 mg/kg/day [136]4 w
0.15 μg/h [137139]4 w100%
Aldosterone plus unilateral nephrectomyOsmotic minipump0.75 μg/h [140]4 w [140] or 6 w [141]
L-NAMEFeeding or gavage20 mg/d [147]8 w33%80%
40 mg/kg [148]4 w
60 mg/kg/day [149]16 w10%
3 m/ml [150]6 w
0.1 g/L [151]2 w

Genetic model
Ufl1 knockout mice6 m [155]
Raf1L613V expression mice4 d [156]