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- W3035527462 abstract "Right ventricle failure (RVF) is associated with serious cardiac and pulmonary diseases that contribute significantly to the morbidity and mortality of patients. Currently, the mechanisms of RVF are not fully understood and it is partly due to the lack of large animal models in adult RVF. In this study, we aim to establish a model of RVF in adult ovine and examine the structure and function relations in the RV.RV pressure overload was induced in adult male sheep by revised pulmonary artery constriction (PAC). Briefly, an adjustable hydraulic occluder was placed around the main pulmonary artery trunk. Then, repeated saline injection was performed at weeks 0, 1, and 4, where the amount of saline was determined in an animal-specific manner. Healthy, age-matched male sheep were used as additional controls. Echocardiography was performed bi-weekly and on week 11 post-PAC, hemodynamic and biological measurements were obtained.This PAC methodology resulted in a marked increase in RV systolic pressure and decreases in stroke volume and tricuspid annular plane systolic excursion, indicating signs of RVF. Significant increases in RV chamber size, wall thickness, and Fulton's index were observed. Cardiomyocyte hypertrophy and collagen accumulation (particularly type III collagen) were evident, and these structural changes were correlated with RV dysfunction.In summary, the animal-specific, repeated PAC provided a robust approach to induce adult RVF, and this ovine model will offer a useful tool to study the progression and treatment of adult RVF that is translatable to human diseases." @default.
- W3035527462 created "2020-06-19" @default.
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- W3035527462 date "2020-06-01" @default.
- W3035527462 modified "2023-09-25" @default.
- W3035527462 title "Establishment of adult right ventricle failure in ovine using a graded, animal‐specific pulmonary artery constriction model" @default.
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- W3035527462 doi "https://doi.org/10.1002/ame2.12124" @default.
- W3035527462 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7323700" @default.
- W3035527462 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32613177" @default.
- W3035527462 hasPublicationYear "2020" @default.
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