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Cardiac gene delivery using ultrasound: State of the field

Author(s): Singh D; Memari E; He S; Yusefi H; Helfield B;

Over the past two decades, there has been tremendous and exciting progress toward extending the use of medical ultrasound beyond a traditional imaging tool. Ultrasound contrast agents, typically used for improved visualization of blood flow, have been explored as novel non-viral gene delivery vectors for cardiovascular therapy. Given this adaptation to ul ...

Article GUID: 38983873


Focused ultrasound-assisted delivery of immunomodulating agents in brain cancer

Author(s): Memari E; Khan D; Alkins R; Helfield B;

Focused ultrasound (FUS) combined with intravascularly circulating microbubbles can transiently increase the permeability of the blood-brain barrier (BBB) to enable targeted therapeutic delivery to the brain, the clinical testing of which is currently underway in both adult and pediatric patients. Aside from traditional cancer drugs, this technique is bei ...

Article GUID: 38266715


Fluid flow influences ultrasound-assisted endothelial membrane permeabilization and calcium flux

Author(s): Memari E; Hui F; Yusefi H; Helfield B;

The local fluid dynamics experienced by circulating microbubbles vary across different anatomical sites, which can influence ultrasound-mediated therapeutic delivery efficacy. This study aimed to elucidate the effect of fluid flow rate in combination with repeated short-pulse ultrasound on microbubble-mediated endothelial cell permeabilization. Here, a se ...

Article GUID: 37150403


Stable Cavitation-Mediated Delivery of miR-126 to Endothelial Cells

Author(s): He S; Singh D; Yusefi H; Helfield B;

In endothelial cells, microRNA-126 (miR-126) promotes angiogenesis, and modulating the intracellular levels of this gene could suggest a method to treat cardiovascular diseases such as ischemia. Novel ultrasound-stimulated microbubbles offer a means to deliver therapeutic payloads to target cells and sites of disease. The purpose of this study was to inve ...

Article GUID: 36559150


Transendothelial Perforations and the Sphere of Influence of Single-Site Sonoporation.

Author(s): Helfield B, Chen X, Watkins SC, Villanueva FS

Ultrasound Med Biol. 2020 May 10;: Authors: Helfield B, Chen X, Watkins SC, Villanueva FS

Article GUID: 32402675


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