例如:"lncRNA", "apoptosis", "WRKY"

Thromboxane A2 Synthase and Thromboxane Receptor Deletion Reduces Ischaemia/Reperfusion-Evoked Inflammation, Apoptosis, Autophagy and Pyroptosis.

Thromb Haemost. 2020 Feb;120(2):329-343. doi:10.1055/s-0039-3400304. Epub 2019 Nov 30
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摘要


AIM: Enhancement of thromboxane A2 (TXA2) synthase (TXAS) activity, TXA2 release, and thromboxane prostanoid (TP) receptor activation leads to vasoconstriction and oxidative injury. We explored whether genetic deletion of TXAS/TXA2/TP signalling may reduce renal ischaemia/reperfusion (I/R) injury in mice. MATERIALS AND METHODS: Renal haemodynamics and function were evaluated in TXAS+/+TP+/+ (wild-type, WT), TXAS-/- (TXS-/-), TP-/- and TXAS-/-TP-/- (double knockout, dKO) mice in response to intravenous TXA2 mimetic-U46619 and 45-minute renal ischaemia and 4-hour reperfusion injury. We examined renal TXAS and TP expression, blood urea nitrogen (BUN) and creatinine, reactive oxygen species amount, pro-inflammatory cytokines and pathophysiologic mechanisms, including apoptosis, autophagy and pyroptosis under I/R injury. RESULTS: Renal I/R enhanced the levels of TXAS, TP, nuclear factor-κB, nicotinamide adenine dinucleotide phosphate oxidase gp91, Bax/Bcl-2/caspase-3/apoptosis, Beclin-1/LC3-II/autophagy, caspase-1/gasdermin D/interleukin-1β/pyroptosis, renal thromboxane B2 (TXB2) concentration, amount, plasma BUN, creatinine and TXB2 and decreased renal endothelial nitric oxide synthase expression in WT mice. All these enhanced parameters were significantly decreased in three KO mice. Intravenous U46619 significantly decreased renal microcirculation and enhanced gp91 and Bax/Bcl-2 in WT and TXS-/- but not TP-/- in dKO mice. I/R significantly decreased renal microcirculation in all mice; however, the time for recovery to baseline renal blood flow level was significantly shortened in TXS-/-, TP-/-and dKO mice versus WT mice. Blockade of TXAS/TP signalling attenuated I/R-enhanced pro-inflammatory cytokine profile. CONCLUSION: Blockade of TXAS/TXA2/TP signalling confers renal protection against I/R injury through the actions of anti-oxidation, anti-inflammation, anti-apoptosis, anti-autophagy and anti-pyroptosis.

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