Myocardial infarction accelerates atherosclerosis.

Myocardial infarction accelerates atherosclerosis.
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DOI:
10.1038/nature11260
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发表时间:
2012-07-19
期刊:
影响因子:
64.8
通讯作者:
Nahrendorf, Matthias
Nahrendorf, Matthias
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Dutta, Partha;Courties, Gabriel;Wei, Ying;Leuschner, Florian;Gorbatov, Rostic;Robbins, Clinton S.;Iwamoto, Yoshiko;Thompson, Brian;Carlson, Alicia L.;Heidt, Timo;Majmudar, Maulik D.;Lasitschka, Felix;Etzrodt, Martin;Waterman, Peter;Waring, Michael T.;Chicoine, Adam T.;van der Laan, Anja M.;Niessen, Hans W. M.;Piek, Jan J.;Rubin, Barry B.;Butany, Jagdish;Stone, James R.;Katus, Hugo A.;Murphy, Sabina A.;Morrow, David A.;Sabatine, Marc S.;Vinegoni, Claudio;Moskowitz, Michael A.;Pittet, Mikael J.;Libby, Peter;Lin, Charles P.;Swirski, Filip K.;Weissleder, Ralph;Nahrendorf, Matthias

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During progression of atherosclerosis, myeloid cells destabilize lipid-rich plaque in the arterial wall and cause its rupture, thus triggering myocardial infarction and stroke. Survivors of acute coronary syndromes have a high risk of recurrent events for unknown reasons. Here we show that the systemic response to ischemic injury aggravates chronic atherosclerosis. After myocardial infarction or stroke, apoE−/− mice developed larger atherosclerotic lesions with a more advanced morphology. This disease acceleration persisted over many weeks and was associated with markedly increased monocyte recruitment. When seeking the source of surplus monocytes in plaque, we found that myocardial infarction liberated hematopoietic stem and progenitor cells from bone marrow niches via sympathetic nervous system signaling. The progenitors then seeded the spleen yielding a sustained boost in monocyte production. These observations provide new mechanistic insight into atherogenesis and provide a novel therapeutic opportunity to mitigate disease progression.
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