Inhibition of tPA-induced hemorrhagic transformation involves adenosine A2b receptor activation after cerebral ischemia.
Inhibition of tPA-induced hemorrhagic transformation involves adenosine A2b receptor activation after cerebral ischemia.
复制标题
DOI:
10.1016/j.nbd.2017.08.011
复制
发表时间:
2017-12
影响因子:
6.1
通讯作者:
Wang J
中科院分区:
文献类型:
--
作者:
Li Q;Han X;Lan X;Hong X;Li Q;Gao Y;Luo T;Yang Q;Koehler RC;Zhai Y;Zhou J;Wang J
Tissue plasminogen activator (tPA) is administered after ischemic stroke to dissolve intravascular clots, but its use can lead to hemorrhagic transformation (HT). Therapeutic strategies to reduce hemorrhagic complications of tPA might be of benefit for stroke patients. Adenosine A2b receptor (A2bR) plays pivotal roles in regulating vascular protection in peripheral organs. This study explored whether A2bR agonist BAY 60-6583 reduces hemorrhage risk after tPA usage. Using a rat transient middle cerebral artery occlusion model, we showed that mRNA and protein expression of A2bR increased to a greater extent after ischemia-reperfusion than did expression of the other three adenosine receptors (A1, A2a, and A3). tPA administration reduced A2bR expression in ischemic brain microvessels. Post-treatment with BAY 60-6583 (1 mg/kg) at the start of reperfusion reduced lesion volume in the absence or presence of tPA (10 mg/kg) and attenuated brain swelling, blood-brain barrier disruption, and tPA-exacerbated HT at 24 h. Additionally, BAY 60-6583 mitigated sensorimotor deficits in the presence of tPA. BAY 60-6583 inhibited tPA-enhanced matrix metalloprotease-9 activation, probably through elevation of tissue inhibitor of matrix metalloproteinases-1 expression, and thereby reduced degradation of tight junction proteins. These effects would likely protect cerebrovascular integrity. A2bR agonists as an adjuvant to tPA could be a promising strategy for decreasing the risk of HT during treatment for ischemic stroke.
登录
查看更多内容
DOI:
10.4049/jimmunol.1401957
发表时间:
2015-08-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hoegl S;Brodsky KS;Blackburn MR;Karmouty-Quintana H;Zwissler B;Eltzschig HK
通讯作者:
Eltzschig HK
DOI:
10.1016/j.bbi.2016.12.012
发表时间:
2017-03
期刊:
Brain, behavior, and immunity
影响因子:
--
作者:
Lan X;Han X;Li Q;Li Q;Gao Y;Cheng T;Wan J;Zhu W;Wang J
通讯作者:
Wang J
影响因子:
8.8
作者:
Eltzschig HK
通讯作者:
Eltzschig HK
DOI:
10.1152/ajpheart.00181.2010
发表时间:
2010-10-01
影响因子:
4.8
作者:
Methner, Carmen;Schmidt, Katharina;Krieg, Thomas
通讯作者:
Krieg, Thomas
影响因子:
7.4
作者:
Cheng T;Wang W;Li Q;Han X;Xing J;Qi C;Lan X;Wan J;Potts A;Guan F;Wang J
通讯作者:
Wang J