The contribution of TRPV1 channel to 20-HETE-Aggravated ischemic neuronal injury.
The contribution of TRPV1 channel to 20-HETE-Aggravated ischemic neuronal injury.
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DOI:
10.1016/j.prostaglandins.2018.07.001
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发表时间:
2018-07
影响因子:
2.9
通讯作者:
Yang ZJ
中科院分区:
文献类型:
--
作者:
Zhang X;El Demerdash N;Falck JR;Munnuri S;Koehler RC;Yang ZJ
20-Hydroxyeicosatetraenoic acid (20-HETE), a cytochrome P450 (CYP) 4A/4F-derived metabolite of arachidonic acid, directly contributes to ischemic neuronal injury. However, little is known about mediators of 20-HETE neurotoxicity after ischemia. Here, we focus on the role of transient receptor potential cation channel subfamily V member 1 (TRPV1) in 20-HETE-induced neurotoxicity. Our results showed that TRPV1 and CYP4A immunoreactivity were colocalized in neurons. TRPV1 inhibition attenuated 20-HETE mimetic 20-5,14-HEDGE-induced reactive oxygen species (ROS) production and neuronal injury in cultured neurons and protected ischemic neurons in vitro and in vivo. TRPV1 inhibition in combination with 20-HETE synthesis inhibitor HET0016 did not produce additional protective effects. Furthermore, TRPV1 genetic inhibition and NADPH oxidase inhibitor gp91ds-dat each attenuated ROS production to a similar extent. However, combined treatment did not achieve additional reduction. Therefore, we conclude that TRPV1 channels are involved in 20-HETE’s ROS generation and neurotoxicity after ischemia.
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DOI:
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期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
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The Journal of neuroscience : the official journal of the Society for Neuroscience
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