A Reliable Mouse Model of Hind limb Gangrene

Punam P. Parikh, Diego Castilla, Roberta Soares, Hongwei Shao, Manuela Regueiro, Yan Li, Roberto I Vazquez-Padron, Keith A Webster, Zhao-Jun Liu, Omaida C Velazquez

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Background: Lack of a reliable hind limb gangrene animal model limits preclinical studies of gangrene, a severe form of critical limb ischemia. We develop a novel mouse hind limb gangrene model to facilitate translational studies. Methods: BALB/c, FVB, and C57BL/6 mice underwent femoral artery ligation (FAL) with or without administration of NG-nitro-L-arginine methyl ester (L-NAME), an endothelial nitric oxide synthase inhibitor. Gangrene was assessed using standardized ischemia scores ranging from 0 (no gangrene) to 12 (forefoot gangrene). Laser Doppler imaging (LDI) and DiI perfusion quantified hind limb reperfusion postoperatively. Results: BALB/c develops gangrene with FAL-only (n = 11/11, 100% gangrene incidence), showing mean limb ischemia score of 12 on postoperative days (PODs) 7 and 14 with LDI ranging from 0.08 to 0.12 on respective PODs. Most FVB did not develop gangrene with FAL-only (n = 3/9, 33% gangrene incidence) but with FAL and L-NAME (n = 9/9, 100% gangrene incidence). Mean limb ischemia scores for FVB undergoing FAL with L-NAME were significantly higher than for FVB receiving FAL-only. LDI score and capillary density by POD 28 were significantly lower in FVB undergoing FAL with L-NAME. C57BL/6 did not develop gangrene with FAL-only or FAL and L-NAME. Conclusions: Reproducible murine gangrene models may elucidate molecular mechanisms for gangrene development, facilitating therapeutic intervention.

Original languageEnglish (US)
JournalAnnals of Vascular Surgery
DOIs
StateAccepted/In press - Jan 1 2017

ASJC Scopus subject areas

  • Surgery
  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'A Reliable Mouse Model of Hind limb Gangrene'. Together they form a unique fingerprint.

  • Cite this