Novel Model of Pulmonary Artery Banding Leading to Right Heart Failure in Rats

Masataka Hirata, Daiki Ousaka, Sadahiko Arai, Michihiro Okuyama, Suguru Tarui, Junko Kobayashi, Shingo Kasahara, Shunji Sano

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14 Citations (Scopus)

Abstract

Background. Congenital heart diseases often involve chronic pressure overload of the right ventricle (RV) which is a major cause of RV dysfunction. Pulmonary artery (PA) banding has been used to produce animal models of RV dysfunction. We have devised a new and easier method of constricting the PA and compared it directly with the partial ligation method. Methods. Eight-week-old male Sprague-Dawley rats (240-260 g) were divided into three groups: sham operation, partial pulmonary artery ligation (PAL) procedure, and pulmonary artery half-closed clip (PAC) procedure. RV function and remodeling were determined by echocardiography and histomorphometry. Results. Surgical mortality was significantly lower in the PAC group while echocardiography revealed significantly more signs of RV dysfunction. At the 8th week after surgery RV fibrosis rate was significantly higher in the PAC group. Conclusions. This procedure of pulmonary artery banding in rats is easier and more efficient than partial ligation.

Original languageEnglish
Article number753210
JournalBioMed research international
Volume2015
DOIs
Publication statusPublished - Jan 1 2015

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)

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    Hirata, M., Ousaka, D., Arai, S., Okuyama, M., Tarui, S., Kobayashi, J., Kasahara, S., & Sano, S. (2015). Novel Model of Pulmonary Artery Banding Leading to Right Heart Failure in Rats. BioMed research international, 2015, [753210]. https://doi.org/10.1155/2015/753210