Abstract：
:Urokinase plasminogen activator (uPA) system is important for several biological processes that call for extracellular proteolysis, fibrinolysis, cell migration, proliferation and angiogenesis. The current study highlights the fibrinolytic and wound healing potential of emodin, an anthraquinone, with relevance to the uPA system. Emodin increased the fibrinolytic activity of fibroblast cells in a dose-dependent manner. Zymography linked the activity to increased uPA activity. Subsequent RT-PCR and western analyses demonstrated uPA gene upregulation. Interestingly, PAI-1, the inhibitor of uPA was also upregulated. EMSA showed the upregulation occurred independent of emodin's effect on nuclear factor kappa B (NFkappaB). The effect on uPA system is supposedly via generation of reactive oxygen species (ROS) since cotreatment with ascorbic acid, an anti-oxidant, attenuated the activity. In addition to profibrinolytic potential, emodin also demonstrated wound healing activity in in vitro wound models. Presence of emodin in the medium enhanced the rate of migration of fibroblasts into the wounded region. These in vitro experiments reveal that emodin is a potent profibrinolytic and wound healing agent.
journal_name
Vascul Pharmacoljournal_title
Vascular pharmacologyauthors
Radha KS,Madhyastha HK,Nakajima Y,Omura S,Maruyama Mdoi
10.1016/j.vph.2008.02.002subject
Has Abstractpub_date
2008-04-01 00:00:00pages
184-90issue
4-6eissn
1537-1891issn
1879-3649pii
S1537-1891(08)00024-4journal_volume
48pub_type
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