Three catheter-based strategies for cardiac delivery of therapeutic gelatin microspheres View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2006-05-18

AUTHORS

K Hoshino, T Kimura, A M De Grand, R Yoneyama, Y Kawase, S Houser, H Q Ly, T Kushibiki, Y Furukawa, K Ono, Y Tabata, J V Frangioni, T Kita, R J Hajjar, M Hayase

ABSTRACT

Gelatin hydrogel microspheres (GHMs) have been reported as novel non-viral vectors for gene or protein delivery (GHM therapy). However, the components of an effective catheter-based delivery strategy for GHM therapy are unknown. We evaluated the effectiveness of three catheter-based strategies for cardiac GHM therapy: (1) antegrade injection (AI) via coronary arteries; (2) retrograde injection (RI) via coronary veins; and (3) direct myocardial injection (DI) via the coronary sinus. AI distributed microspheres homogeneously throughout the target area with 73±11% retention. RI scattered microspheres non-homogenously with 22±8% retention. DI distributed microspheres in the needle-advanced area with 47±14% retention. However, despite high efficiency, AI did not show biological effects of inducing angiogenesis from basic fibroblast growth factor bound to GHMs. Furthermore, focal micro-infarctions, owing to micro-embolism of aggregated GHMs into small coronary arterioles, were detected in the AI group. Conversely, only RI and DI groups displayed increased coronary flow reserve. DI groups also demonstrated increased capillary density. These results suggest that RI and DI are effective for cardiac GHM therapy, while AI appears inappropriate owing to the risk of focal infarctions. More... »

PAGES

1320-1327

Identifiers

URI

http://scigraph.springernature.com/pub.10.1038/sj.gt.3302793

DOI

http://dx.doi.org/10.1038/sj.gt.3302793

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1013266211

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/16708077


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31 schema:description Gelatin hydrogel microspheres (GHMs) have been reported as novel non-viral vectors for gene or protein delivery (GHM therapy). However, the components of an effective catheter-based delivery strategy for GHM therapy are unknown. We evaluated the effectiveness of three catheter-based strategies for cardiac GHM therapy: (1) antegrade injection (AI) via coronary arteries; (2) retrograde injection (RI) via coronary veins; and (3) direct myocardial injection (DI) via the coronary sinus. AI distributed microspheres homogeneously throughout the target area with 73±11% retention. RI scattered microspheres non-homogenously with 22±8% retention. DI distributed microspheres in the needle-advanced area with 47±14% retention. However, despite high efficiency, AI did not show biological effects of inducing angiogenesis from basic fibroblast growth factor bound to GHMs. Furthermore, focal micro-infarctions, owing to micro-embolism of aggregated GHMs into small coronary arterioles, were detected in the AI group. Conversely, only RI and DI groups displayed increased coronary flow reserve. DI groups also demonstrated increased capillary density. These results suggest that RI and DI are effective for cardiac GHM therapy, while AI appears inappropriate owing to the risk of focal infarctions.
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