Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration

Hui Cai,1 Xingxing Wen,1 Lu Wen,1 Nicola Tirelli,2,3 Xiao Zhang,1 Yue Zhang,1 Huanpeng Su,1 Fan Yang,1 Gang Chen1,4 1School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People’s Republic of China; 2School of Materials, 3School of Biomedicine, University of Manchester, Man...

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Autores principales:	Cai H, Wen X, Wen L, Tirelli N, Zhang X, Zhang Y, Su H, Yang F, Chen G
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2014
Materias:	Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/e44512b37167478892e5bc2014c9e17e
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spelling	oai:doaj.org-article:e44512b37167478892e5bc2014c9e17e2021-12-02T04:21:03ZEnhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration1178-2013https://doaj.org/article/e44512b37167478892e5bc2014c9e17e2014-12-01T00:00:00Zhttp://www.dovepress.com/enhanced-local-bioavailability-of-single-or-compound-drugs-delivery-to-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013 Hui Cai,1 Xingxing Wen,1 Lu Wen,1 Nicola Tirelli,2,3 Xiao Zhang,1 Yue Zhang,1 Huanpeng Su,1 Fan Yang,1 Gang Chen1,4 1School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People’s Republic of China; 2School of Materials, 3School of Biomedicine, University of Manchester, Manchester, United Kingdom; 4Department of Clinical pharmacy, Guangdong Pharmaceutical University, Guangzhou, People’s Republic of China Abstract: In this paper, the potential of poly(D,L-lactide-co-glycolide acid) (PLGA) nanoparticles (NPs) for carrying single or compound drugs traversing the round window membrane (RWM) was examined after the round window (RW) administration of different NPs to guinea pigs. First, coumarin-6 was incorporated into PLGA NPs as a fluorescent probe to investigate its ability to cross the RWM. Then, PLGA NPs with salvianolic acid B (Sal B), tanshinone IIA (TS IIA), and total panax notoginsenoside (PNS) including notoginsenoside R1 (R1), ginsenoside Rg1 (Rg1), and ginsenoside Rb1 (Rb1) were developed to evaluate whether NPs loaded with compound drugs would pass through the RWM and improve the local bioavailability of these agents. PLGA NPs loaded with single or compound drugs were prepared by the emulsification solvent evaporation method, and their particle size distribution, particle morphology, and encapsulation efficiency were characterized. In vitro release study showed sustained-release profiles of Sal B, TS IIA, and PNS from the NPs. The pharmacokinetic results showed that NPs applied to the RWM significantly improved drug distribution within the inner ear. The AUC0–t of coumarin-6 in the perilymph (PL) following RW administration of NPs was 4.7-fold higher than that of coumarin-6 solution, and the Cmax was 10.9-fold higher. Furthermore, the AUC0–t of R1, Rg1, and Rb1 were 4.0-, 3.1-, and 7.1-fold greater, respectively, after the application of NPs compared to the compound solution, and the Cmax were, respectively, 14.4-, 10.0-, and 16.7-fold higher. These findings suggest that PLGA NPs with unique properties at the nanoscale dimensions have a powerful ability to transport single or compound drugs into the PL through the RWM and remarkably enhance the local bioavailability of the encapsulated drugs in the inner ear. The use of PLGA NPs as nanoscale delivery vehicles to carry drugs across the RWM may be a promising strategy for the treatment of inner ear diseases. Keywords: inner ear administration, nanoparticles, perilymph, local bioavailability, poly(D,L-lactide-co-glycolide acid)Cai HWen XWen LTirelli NZhang XZhang YSu HYang FChen GDove Medical PressarticleMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol 2014, Iss Issue 1, Pp 5591-5601 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine (General) R5-920
spellingShingle	Medicine (General) R5-920 Cai H Wen X Wen L Tirelli N Zhang X Zhang Y Su H Yang F Chen G Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
description	Hui Cai,1 Xingxing Wen,1 Lu Wen,1 Nicola Tirelli,2,3 Xiao Zhang,1 Yue Zhang,1 Huanpeng Su,1 Fan Yang,1 Gang Chen1,4 1School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, People’s Republic of China; 2School of Materials, 3School of Biomedicine, University of Manchester, Manchester, United Kingdom; 4Department of Clinical pharmacy, Guangdong Pharmaceutical University, Guangzhou, People’s Republic of China Abstract: In this paper, the potential of poly(D,L-lactide-co-glycolide acid) (PLGA) nanoparticles (NPs) for carrying single or compound drugs traversing the round window membrane (RWM) was examined after the round window (RW) administration of different NPs to guinea pigs. First, coumarin-6 was incorporated into PLGA NPs as a fluorescent probe to investigate its ability to cross the RWM. Then, PLGA NPs with salvianolic acid B (Sal B), tanshinone IIA (TS IIA), and total panax notoginsenoside (PNS) including notoginsenoside R1 (R1), ginsenoside Rg1 (Rg1), and ginsenoside Rb1 (Rb1) were developed to evaluate whether NPs loaded with compound drugs would pass through the RWM and improve the local bioavailability of these agents. PLGA NPs loaded with single or compound drugs were prepared by the emulsification solvent evaporation method, and their particle size distribution, particle morphology, and encapsulation efficiency were characterized. In vitro release study showed sustained-release profiles of Sal B, TS IIA, and PNS from the NPs. The pharmacokinetic results showed that NPs applied to the RWM significantly improved drug distribution within the inner ear. The AUC0–t of coumarin-6 in the perilymph (PL) following RW administration of NPs was 4.7-fold higher than that of coumarin-6 solution, and the Cmax was 10.9-fold higher. Furthermore, the AUC0–t of R1, Rg1, and Rb1 were 4.0-, 3.1-, and 7.1-fold greater, respectively, after the application of NPs compared to the compound solution, and the Cmax were, respectively, 14.4-, 10.0-, and 16.7-fold higher. These findings suggest that PLGA NPs with unique properties at the nanoscale dimensions have a powerful ability to transport single or compound drugs into the PL through the RWM and remarkably enhance the local bioavailability of the encapsulated drugs in the inner ear. The use of PLGA NPs as nanoscale delivery vehicles to carry drugs across the RWM may be a promising strategy for the treatment of inner ear diseases. Keywords: inner ear administration, nanoparticles, perilymph, local bioavailability, poly(D,L-lactide-co-glycolide acid)
format	article
author	Cai H Wen X Wen L Tirelli N Zhang X Zhang Y Su H Yang F Chen G
author_facet	Cai H Wen X Wen L Tirelli N Zhang X Zhang Y Su H Yang F Chen G
author_sort	Cai H
title	Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
title_short	Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
title_full	Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
title_fullStr	Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
title_full_unstemmed	Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration
title_sort	enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of plga nanoparticles via round window administration
publisher	Dove Medical Press
publishDate	2014
url	https://doaj.org/article/e44512b37167478892e5bc2014c9e17e
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Enhanced local bioavailability of single or compound drugs delivery to the inner ear through application of PLGA nanoparticles via round window administration

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