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Erschienen in: Cardiovascular Drugs and Therapy 5/2021

04.01.2021 | Original Article

Methotrexate Therapy Promotes Cell Coverage and Stability in in-Stent Neointima

verfasst von: Xianglan Liu, Ruoxi Zhang, Guosheng Fu, Yong Sun, Jian Wu, Maomao Zhang, Jinwei Tian, Xia Gu, Yang Zheng, Chengming Shi, Jingbo Hou, Bo Yu

Erschienen in: Cardiovascular Drugs and Therapy | Ausgabe 5/2021

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Abstract

Purpose

Anti-proliferative drugs released from drug-eluting stents delay cell coverage and vascular healing, which increases the risk of late stent thrombosis. We assessed the potential effects of systemic methotrexate (MTX) on cell coverage, vascular healing and inflammation activation in vivo and in vitro.

Methods

We applied MTX in the right common carotid artery in a rabbit stenting model to determine the impact on cell coverage and inflammation activation using a serial optical coherence tomography (OCT) analysis and elucidated the molecular mechanism of MTX in human umbilical vein endothelial cells (HUVECs).

Results

Low-dose MTX promoted the development of cell coverage and vascular healing, which was associated with fewer uncovered struts (%) and cross-sections with any uncovered struts (%) at 4 weeks of stenting. The MTX group also exhibited lower rates of heterogeneity, microvessels and per-strut low-signal-intensity layers, indicating neointimal instability at 12 weeks of stenting. In vitro, low-dose MTX strongly inhibited HUVEC apoptosis, promoted proliferation and inhibited inflammatory activation by targeting the phosphoinositide 3-kinase (PI3K)/AKT signalling pathway.

Conclusion

Low-dose MTX may be a key means of promoting early cell coverage via the inhibition of the inflammatory response and stability of neointima by targeting inflammatory pathways after stent implantation.
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Metadaten
Titel
Methotrexate Therapy Promotes Cell Coverage and Stability in in-Stent Neointima
verfasst von
Xianglan Liu
Ruoxi Zhang
Guosheng Fu
Yong Sun
Jian Wu
Maomao Zhang
Jinwei Tian
Xia Gu
Yang Zheng
Chengming Shi
Jingbo Hou
Bo Yu
Publikationsdatum
04.01.2021
Verlag
Springer US
Erschienen in
Cardiovascular Drugs and Therapy / Ausgabe 5/2021
Print ISSN: 0920-3206
Elektronische ISSN: 1573-7241
DOI
https://doi.org/10.1007/s10557-020-07121-7

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