Publications by authors named "Yanxia Qiu"

Carbohydrate metabolism plays an essential role in mediating quality and ripening of postharvest fruit. Previous work has demonstrated the regulatory role of methyl jasmonate (MeJA) in ripening of apple fruit. However, the role of MeJA in mediating carbohydrate metabolism of ripening apple fruit is unexplored.

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Antioxidant and hepatoprotective activities in vitro of saffron petals were examined in this study for better utilizing saffron ( L.) biowaste. Using the DPPH and ABTS radical scavenging method, we compared the antioxidant activity and the content of total flavonoid extracts from petals (TFESP), stamens (TFESS), and both saffron petals and stamens (TFEMS).

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Article Synopsis
  • The study aims to determine if berberine can enhance the endothelial repair abilities of early endothelial progenitor cells (EPCs) from prehypertensive individuals by boosting CXCR4 signaling.
  • The researchers isolated EPCs from both prehypertensive and healthy subjects and tested their reendothelialization capabilities in a mouse model, observing various signaling pathways involved in their function.
  • Results showed that berberine treatment improved CXCR4/JAK-2 signaling in EPCs, significantly enhancing their restoration capacity in vivo, suggesting berberine could be a potential preventive treatment for heart disease related to prehypertension.
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Background: Endothelial progenitor cells (EPCs) play a critical role in maintaining the integrity of vascular endothelium following arterial injury. Lacidipine has a beneficial effect on endothelium of hypertensive patients, but limited data are available on EPCs-mediated endothelial protection. This study tests the hypothesis that lacidipine treatment can improve endothelial repair capacity of EPCs from hypertensive patients through increasing CXC chemokine receptor four (CXCR4) signaling.

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Background: Circulating endothelial microparticles (EMPs) lead to endothelial dysfunction by increasing oxidative stress. Berberine has a beneficial effect on endothelial function, but no data are available on the EMP-mediated oxidative stress. The present study tests the hypothesis that berberine contributes to the improvement of endothelial function in humans via inhibiting EMP-mediated oxidative stress in vascular endothelium.

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Although endothelial progenitor cells (EPCs) play a pivotal role in the endothelial repair following arterial injury and shear stress has a beneficial effect on EPCs, however, the molecular mechanism underlying the influence of EPCs on the endothelial integrity and the regulation of shear stress on the EPC signaling remained to be studied. Here, we investigated the effects of laminar shear stress on the tyrosine kinase with immunoglobulin and epidermal growth factor homology domain-2 (Tie2)-dependent signaling and its relation to in vivo reendothelialization capacity of human early EPCs. The human early EPCs were treated with shear stress.

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Endothelial progenitor cells (EPCs) play an important role in repairing endothelial injury. Aging is associated with EPC dysfunction. Physical exercise has a beneficial impact on EPC activity.

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