Abstract:
UNLABELLED:Transglutaminases play an important role in vascular remodeling, calcification, cell adhesion and endothelial barrier function. In this study we investigate the influence of combined inhibition of both tissue-type transglutaminase (TG2) and the plasma transglutaminase FXIIIA on early lesion development. METHODS:A cuff was placed around the femoral arteries of ApoE3 Leiden mice while fed a Western type diet to induce atherosclerotic lesion development. An osmotic minipump was placed in the intraperitoneal cavity containing an irreversible inhibitor of TG2 and FXIIIA activity ((1,3,4,5-tetramethyl-2-[(2-oxopropyl)thio]imidazolium chloride, Zedira). Atherosclerotic lesion composition was analyzed using immunohistochemistry and RT-PCR. RESULTS:Inhibition of transglutaminases did not influence lesion size or geometric remodeling of the vessels. However, systemic transglutaminase inhibition resulted in 41% less macrophage infiltrate in the media of the vessels. Additional in vitro experiments on HL60 cells confirmed a decreased migratory response during transglutaminase inhibition. CONCLUSION:Inhibition of TG2 and FXIIIA during early development of lesions reduced the macrophage content in the media of atherosclerotic vessels, while not affecting lesion size or geometric remodeling.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Matlung HL,VanBavel E,van den Akker J,de Vries CJ,Bakker ENdoi
10.1016/j.atherosclerosis.2010.07.054subject
Has Abstractpub_date
2010-11-01 00:00:00pages
77-84issue
1eissn
0021-9150issn
1879-1484pii
S0021-9150(10)00599-Xjournal_volume
213pub_type
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