1.Research progress on the role of ferroptosis in aortic dissection.
Xiang HONG ; Yuchong ZHANG ; Weiguo FU ; Lixin WANG
Journal of Zhejiang University. Medical sciences 2024;53(6):726-734
Recent studies have shown that iron metabolism dysregulation and lipid peroxidation-induced ferroptosis, triggered by oxidative stress, play a key role in the development of aortic dissection. Dysregulated iron metabolism leads to excessive production of hydroxyl radicals due to abnormal iron levels and heme metabolism, while lipid peroxidation is linked to system Xc- dysfunction and accumulation of phospholipid hydroperoxides. These factors synergistically disrupt aortic homeostasis and drive ferroptosis in vascular cells, including endothelial and smooth muscle cells. Furthermore, disruptions in ferroptosis-related genes, along with risk factors such as smoking, epigenetic modifications such as protein methylation, and abnormalities in immune cells, particularly T cells, are closely linked to aortic dissection. Several small molecules and nanomaterials have shown potential in inhibiting ferroptosis in this context. This review elucidates the roles of ferroptosis in aortic dissection and proposes strategies for its targeted prevention and treatment.
Ferroptosis
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Humans
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Aortic Dissection/etiology*
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Lipid Peroxidation
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Iron/metabolism*
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Oxidative Stress
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Risk Factors
;
Animals
2.The relationship between the characteristics of tears and the progression of Stanford type B aortic dissection after endovascular treatment.
Peng Fei YUAN ; Ming Wei WU ; Hai Bo WANG ; Jiang XIONG
Chinese Journal of Surgery 2023;61(3):256-259
Endovascular treatment of Stanford type B aortic dissection (type B dissection) has been widely used. There will be complications such as aortic dilatation, which will lead to poor prognosis of some patients. With more in-depth researches, it was found that there was a possible correlation between the prognosis of type B dissection and tears, such as the increasing of aortic diameter would be faster with longer tears, and the location of the tear will affect the thrombosis of the false lumen. Studies on hemodynamics have also found that different characteristics of tears of aortic dissection can cause changes in the pressure, blood flow rate and blood capacity in the true and false lumens recently. The hemodynamic changes can be used to predict the prognosis of type B dissection. The main characteristics of tears included the size, position, number of tears, residual tears and stent graft induced new entry. Describing the effect of tear characteristics on the development of type B dissection, can provide the basis for the clinical treatment and further research of type B dissection.
Humans
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Aortic Dissection/surgery*
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Hemodynamics
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Prognosis
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Blood Vessel Prosthesis Implantation/adverse effects*
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Thrombosis/etiology*
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Endovascular Procedures/adverse effects*
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Aortic Aneurysm, Thoracic/surgery*
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Stents/adverse effects*
;
Treatment Outcome

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