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Halofuginone inhibits neointimal formation of cultured rat aorta in a concentration-dependent fashion in vitro

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Summary

Halofuginone, an anticoccidial quinoazolinone, can specifically inhibit collagen type α1 (I) synthesis and gene expression, and also inhibits cultured smooth muscle cell proliferation. The aim of this study was to investigate the effect of halofuginone on neointimal formation of rat aorta after culture in a concentration-dependent manner in vitro. Thoracic aorta of Wistar rats was removed and manipulated to damage the endothelium under sterile conditions, and culture for 15 days in halofuginone-free or halofuginone-added culture medium (n=20). Segments of cultured aorta were studied by histologic and immunohistochemical methods. Proliferation of neointimal layers consisting of loose multilayer cellular structure was observed in the halofuginone-free control group after 15 days of rat aorta culture, and neointimal formation was significantly decreased as an increasing concentration of halofuginone was added. As with precultured fresh aorta, no intimal proliferation was observed in the cultured segments of aorta with 500 ng/ml halofuginone added to culture medium. The proliferation of cell nuclear antigen index was significantly higher in the halofuginone-free control group than that in the halofuginone-added groups. The present results suggest that halofuginone can inhibit neointimal formation of rat aorta after culture in a concentration-dependent fashion in vitro.

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Authors and Affiliations

  1. Department of Cardiovascular Surgery, Akita University School of Medicine, 010-8543, Akita, Japan

    Kexiang Liu, S. Sekine, Y. Goto, K. Iijima, I. Yamagishi, K. Kondon, M. Matsukawa & T. Abe

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  1. Kexiang Liu
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  2. S. Sekine
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  3. Y. Goto
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  4. K. Iijima
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  5. I. Yamagishi
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  6. K. Kondon
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  7. M. Matsukawa
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  8. T. Abe
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Liu, K., Sekine, S., Goto, Y. et al. Halofuginone inhibits neointimal formation of cultured rat aorta in a concentration-dependent fashion in vitro. Heart Vessels 13, 18–23 (1998). https://doi.org/10.1007/BF02750639

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  • DOI: https://doi.org/10.1007/BF02750639

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