Abstract：
:Memory T cells producing interferon (IFN)γ and expressing very late antigen-1 (VLA-1) integrin collagen receptors are found in carotid atherosclerotic plaques, suggesting their involvement in coronary artery disease (CAD) as well. To determine the role of VLA-1+ T cells in CAD percent of CD3+ T cells binding monoclonal antibodies (mAb) to VLA-1 in peripheral blood (PB), and in coronary plaque material aspirated during coronary arterography and arterial blood, were analyzed in a cohort of 117 patients with CAD and 34 controls without CAD. % VLA-1+ T cells in PB was 0.63 ± 0.09% in controls compared to 0.96 ± 0.95% in patients with CAD (p<0.009). The increase was due to a marked elevation of % VLA-1+ T cells in stable CAD (1.6 ± 0.27%) whereas % VLA-1+ T cells during acute coronary syndromes (ACS) and in patients with ischemia by thalium SPECT scan had significantly lower levels. % VLA-1+ T cells in coronary artery plaque material aspirated during therapeutic angiography in patients with ACS was significantly higher than in arterial blood (1.39 ± 0.96% vs 0.75 ± 0.84%, p<0.035, n=3). Thus, % VLA-1+ T cells increases in the PB during stable CAD but decreases in ACS. The finding of their enrichment in coronary blood containing atherosclerotic plaque aspirates suggests that a shift of VLA-1+ T cells from blood to atherosclerotic plaques may play a role in plaque instability in patients with ACS.
journal_name
Immunobiologyjournal_title
Immunobiologyauthors
Asman A,Chouraqui P,Marcu-Malina V,Matetzky S,Segev A,Fefer P,Agranat O,Koltakov A,Hod H,Livneh A,Bank Idoi
10.1016/j.imbio.2013.11.005subject
Has Abstractpub_date
2014-04-01 00:00:00pages
302-7issue
4eissn
0171-2985issn
1878-3279pii
S0171-2985(13)00207-6journal_volume
219pub_type
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