دورية أكاديمية
Stiff Substrates Enhance Endothelial Oxidative Stress in Response to Protein Kinase C Activation
العنوان: | Stiff Substrates Enhance Endothelial Oxidative Stress in Response to Protein Kinase C Activation |
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المؤلفون: | Rebecca Lownes Urbano, Swathi Swaminathan, Alisa Morss Clyne |
المصدر: | Applied Bionics and Biomechanics, Vol 2019 (2019) |
بيانات النشر: | Hindawi Limited, 2019. |
سنة النشر: | 2019 |
المجموعة: | LCC:Biotechnology LCC:Biology (General) |
مصطلحات موضوعية: | Biotechnology, TP248.13-248.65, Biology (General), QH301-705.5 |
الوصف: | Arterial stiffness, which increases with aging and hypertension, is an independent cardiovascular risk factor. While stiffer substrates are known to affect single endothelial cell morphology and migration, the effect of substrate stiffness on endothelial monolayer function is less understood. The objective of this study was to determine if substrate stiffness increased endothelial monolayer reactive oxygen species (ROS) in response to protein kinase C (PKC) activation and if this oxidative stress then impacted adherens junction integrity. Porcine aortic endothelial cells were cultured on varied stiffness polyacrylamide gels and treated with phorbol 12-myristate 13-acetate (PMA), which stimulates PKC and ROS without increasing actinomyosin contractility. PMA-treated endothelial cells on stiffer substrates increased ROS and adherens junction loss without increased contractility. ROS scavengers abrogated PMA effects on cell-cell junctions, with a more profound effect in cells on stiffer substrates. Finally, endothelial cells in aortae from elastin haploinsufficient mice (Eln+/-), which were stiffer than aortae from wild-type mice, showed decreased VE-cadherin colocalization with peripheral actin following PMA treatment. These data suggest that oxidative stress may be enhanced in endothelial cells in stiffer vessels, which could contribute to the association between arterial stiffness and cardiovascular disease. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1176-2322 1754-2103 |
Relation: | https://doaj.org/toc/1176-2322; https://doaj.org/toc/1754-2103 |
DOI: | 10.1155/2019/6578492 |
URL الوصول: | https://doaj.org/article/96184c7f8fa14c01bf79ec552c71bb6a |
رقم الأكسشن: | edsdoj.96184c7f8fa14c01bf79ec552c71bb6a |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 11762322 17542103 |
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DOI: | 10.1155/2019/6578492 |