In the present study we sought to determine the effect of CoCl2, an inhibitor of PHD (prolyl hydroxylase domain protein), on the development of AAA (abdominal aortic aneurysm). AAA was induced in C57BL/6 mice by periaortic application of CaCl2 (AAA group). NaCl (0.9%)-treated mice were used as a sham control (SHAM group). Mice were treated with 0.05% CoCl2 in the drinking water (AAA/CoCl2 group). At 1 and 6 weeks after the operation, aortic tissue was excised for further examination. After 6 weeks of CaCl2 treatment, aortic diameter and macrophage infiltration into the aortic adventitia were increased in the AAA group compared with the SHAM group. Treatment with CoCl2 reduced the aneurysmal size and macrophage infiltration compared with the AAA group. Aortic expression of inflammatory cytokines and MCP-1 (monocyte chemoattractant protein-1) and the activities of MMP-9 (matrix metalloproteinase-9) and MMP-2 were enhanced in the AAA group and attenuated in the AAA/CoCl2 group. Expression of cytokines and the activities of MMPs were already increased after 1 week of CaCl2 treatment, but were suppressed by CoCl2 treatment in association with reduced NF-κB (nuclear factor κB) phosphorylation. Treatment with CoCl2 in mice prevented the development of CaCl2-induced AAA in association with reduced inflammation and ECM (extracellular matrix) disruption. The results of the present study suggest that PHD plays a critical role in the development of AAA and that there is a therapeutic potential for PHD inhibitors in the prevention of AAA development.
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Research Article|
January 22 2014
Suppression of abdominal aortic aneurysm formation by inhibition of prolyl hydroxylase domain protein through attenuation of inflammation and extracellular matrix disruption
Aya Watanabe;
Aya Watanabe
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Toshihiro Ichiki;
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
†Department of Advanced Therapeutics for Cardiovascular Diseases, Kyushu University Graduate School of Medical Sciences 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
Correspondence: Professor Toshihiro Ichiki (email ichiki@cardiol.med.kyushu-u.ac.jp).
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Chikahiro Sankoda;
Chikahiro Sankoda
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Yusuke Takahara;
Yusuke Takahara
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Jiro Ikeda;
Jiro Ikeda
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Eriko Inoue;
Eriko Inoue
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Tomotake Tokunou;
Tomotake Tokunou
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Shiro Kitamoto;
Shiro Kitamoto
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
†Department of Advanced Therapeutics for Cardiovascular Diseases, Kyushu University Graduate School of Medical Sciences 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Kenji Sunagawa
Kenji Sunagawa
*Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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Publisher: Portland Press Ltd
Received:
July 30 2013
Revision Received:
October 11 2013
Accepted:
November 21 2013
Accepted Manuscript online:
November 21 2013
Online ISSN: 1470-8736
Print ISSN: 0143-5221
© The Authors Journal compilation © 2014 Biochemical Society
2014
Clin Sci (Lond) (2014) 126 (9): 671–678.
Article history
Received:
July 30 2013
Revision Received:
October 11 2013
Accepted:
November 21 2013
Accepted Manuscript online:
November 21 2013
Citation
Aya Watanabe, Toshihiro Ichiki, Chikahiro Sankoda, Yusuke Takahara, Jiro Ikeda, Eriko Inoue, Tomotake Tokunou, Shiro Kitamoto, Kenji Sunagawa; Suppression of abdominal aortic aneurysm formation by inhibition of prolyl hydroxylase domain protein through attenuation of inflammation and extracellular matrix disruption. Clin Sci (Lond) 1 May 2014; 126 (9): 671–678. doi: https://doi.org/10.1042/CS20130435
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