Martino Carlos F, Perea Héctor, Hopfner Ursula, Ferguson Virginia L, Wintermantel Erich
Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, Colorado, USA.
Bioelectromagnetics. 2010 May;31(4):296-301. doi: 10.1002/bem.20565.
Pulsed electromagnetic fields (PEMFs) have been used extensively in bone fracture repairs and wound healing. It is accepted that the induced electric field is the dose metric. The mechanisms of interaction between weak magnetic fields and biological systems present more ambiguity than that of PEMFs since weak electric currents induced by PEMFs are believed to mediate the healing process, which are absent in magnetic fields. The present study examines the response of human umbilical vein endothelial cells to weak static magnetic fields. We investigated proliferation, viability, and the expression of functional parameters such as eNOS, NO, and also gene expression of VEGF under the influence of different doses of weak magnetic fields. Applications of weak magnetic fields in tissue engineering are also discussed. Static magnetic fields may open new venues of research in the field of vascular therapies by promoting endothelial cell growth and by enhancing the healing response of the endothelium.
脉冲电磁场(PEMFs)已广泛应用于骨折修复和伤口愈合。人们认为感应电场是剂量指标。与PEMFs相比,弱磁场与生物系统之间的相互作用机制存在更多的不确定性,因为人们认为PEMFs感应的弱电流介导了愈合过程,而磁场中不存在这种电流。本研究考察了人脐静脉内皮细胞对弱静磁场的反应。我们研究了在不同剂量弱磁场影响下细胞的增殖、活力以及功能参数如内皮型一氧化氮合酶(eNOS)、一氧化氮(NO)的表达,还有血管内皮生长因子(VEGF)的基因表达。同时也讨论了弱磁场在组织工程中的应用。静磁场可能通过促进内皮细胞生长和增强内皮的愈合反应,为血管治疗领域开辟新的研究途径。
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