Coronary cardiac allograft vasculopathy versus native atherosclerosis: difficulties in classification
Autor: | Allard C. van der Wal, Marialuisa Valente, Gaetano Thiene, Annalisa Angelini, Marny Fedrigo, Xiaofei Li, Lorine B. Meijer-Jorna, Chiara Castellani, Onno J. de Boer |
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Jazyk: | angličtina |
Rok vydání: | 2014 |
Předmět: |
Graft Rejection
medicine.medical_specialty Heart Diseases medicine.medical_treatment Coronary Artery Disease Heart transplantation Pathology and Forensic Medicine Sudden cardiac death Lesion Internal medicine medicine Humans Myocardial infarction Molecular Biology Coronary atherosclerosis business.industry Cell Biology General Medicine Arteriosclerosis medicine.disease Transplantation Stenosis surgical procedures operative atherosclerosis Cardiology cardiovascular system medicine.symptom business |
Zdroj: | Virchows Archiv. 464(6):627-635 |
ISSN: | 0945-6317 |
Popis: | Cardiac allograft vasculopathy is regarded as a progressive and diffuse intimal hyperplastic lesion of arteries and veins that leads to insidious vessel narrowing and to allograft ischemic disease, such as acute myocardial infarction or sudden cardiac death. The coronary lesions in transplanted hearts are considered as a particular type of arteriosclerosis with many similarities but also significant differences compared to native coronary atherosclerosis. It is particularly difficult for pathologists to systematically classify the lesions and to elucidate their origins, since over time, the allograft immune responses cause vascular pathology characterized by not only the onset of de novo fibrocellular lesions but also remodeling of already-existing native atherosclerotic lesions in the donor heart. Intraplaque hemorrhages, which result from newly formed leaky microvessels, may cause rapid increase of stenosis and generate a substrate for plaque destabilization. Comparing cardiac allograft vasculopathy from explanted hearts at autopsy with native coronary atherosclerosis from hearts removed at transplantation has revealed that ongoing intraplaque hemorrhages are also an important feature of cardiac allograft vasculopathy and may be important factors in the rapid progression of cardiac allograft vasculopathy. |
Databáze: | OpenAIRE |
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