In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold

Zhidong Cao,1 Dianming Jiang,2 Ling Yan,3 Jun Wu4 1Department of Orthopedics, The Emergency Medical Center of Chongqing City, Chongqing, People’s Republic of China; 2Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Rep...

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Autores principales:	Cao Z, Jiang D, Yan L, Wu J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2017
Materias:	Chronic osteomyelitis vancomycin Drug release Scaffold local antibiotics delivery BHA/PAA Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/69dd51eb80074ec3a662da4d349e619e
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spelling	oai:doaj.org-article:69dd51eb80074ec3a662da4d349e619e2021-12-02T03:55:35ZIn vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold1178-2013https://doaj.org/article/69dd51eb80074ec3a662da4d349e619e2017-03-01T00:00:00Zhttps://www.dovepress.com/in-vitro-and-in-vivo-drug-release-and-antibacterial-properties-of-the--peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Zhidong Cao,1 Dianming Jiang,2 Ling Yan,3 Jun Wu4 1Department of Orthopedics, The Emergency Medical Center of Chongqing City, Chongqing, People’s Republic of China; 2Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China; 3Department of Orthopedics, The First People’s Hospital of Zunyi City, Zunyi, People’s Republic of China; 4Department of Orthopedics, Children’s Hospital Affiliated to Chongqing University of Medical Sciences, Chongqing, People’s Republic of China Abstract: Antibiotic-loaded carriers were developed to fill cavities and locally deliver antibiotics following implantation. However, the most commonly used antibiotic carrier, polymethyl methacrylate (PMMA), has many disadvantages including that it does not promote bone regeneration or conduction. Vancomycin-loaded bone-like hydroxyapatite/poly amino acid (V-BHA/PAA) was successfully fabricated by a homogeneous method, certified as biosafe and known to promote osteogenesis. To evaluate its drug-release features, the quantity of the vancomycin in the elution was obtained every 2 days after in vitro simulated body fluid immersion. The drug concentration in the elution was determined to obtain the drug-release curve. The in vitro drug release was a three-phase process with two release peaks. Its antibacterial activity was evaluated in vitro using an antibacterial zone assay, antibacterial inhibition, and scanning electron microscopy (SEM) observation. Scaffolds of V-BHA/PAA were implanted into a rabbit model of chronic osteomyelitis. The antibacterial activity of the material was evaluated in vivo by gross observations, X-ray, and histological and ultrastructural observations. During the first 48 h, the vancomycin release was more rapid, followed by a period of sustained slow release. Use of V-BHA/PAA could achieve relatively long-term vancomycin delivery of 38 days in vitro and 42 days in vivo. V-BHA/PAA showed a significant and consistent bactericidal effect toward both Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) in vitro and in vivo. Moreover, the bactericidal effect was stronger than that of vancomycin-loaded polymethyl methacrylate (V-PMMA). The duration of the antibacterial effect of V-BHA/PAA toward both S. aureus and MRSA exceeded 28 days in vitro, while that of V-PMMA lasted only 14 days. The curative rate for V-BHA/PAA in the chronic osteomyelitis model was 75% for regular S. aureus and 66.67% for MRSA infection, which significantly exceeded that of V-PMMA (50% and 41.67%, respectively). Vancomycin released from the V-BHA/PAA scaffold was significantly superior to that delivered by V-PMMA. Keywords: chronic osteomyelitis, vancomycin, drug release, scaffold, local antibiotics delivery, BHA/PAACao ZJiang DYan LWu JDove Medical PressarticleChronic osteomyelitisvancomycinDrug releaseScaffoldlocal antibiotics deliveryBHA/PAAMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 12, Pp 1841-1851 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chronic osteomyelitis vancomycin Drug release Scaffold local antibiotics delivery BHA/PAA Medicine (General) R5-920
spellingShingle	Chronic osteomyelitis vancomycin Drug release Scaffold local antibiotics delivery BHA/PAA Medicine (General) R5-920 Cao Z Jiang D Yan L Wu J In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
description	Zhidong Cao,1 Dianming Jiang,2 Ling Yan,3 Jun Wu4 1Department of Orthopedics, The Emergency Medical Center of Chongqing City, Chongqing, People’s Republic of China; 2Department of Orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China; 3Department of Orthopedics, The First People’s Hospital of Zunyi City, Zunyi, People’s Republic of China; 4Department of Orthopedics, Children’s Hospital Affiliated to Chongqing University of Medical Sciences, Chongqing, People’s Republic of China Abstract: Antibiotic-loaded carriers were developed to fill cavities and locally deliver antibiotics following implantation. However, the most commonly used antibiotic carrier, polymethyl methacrylate (PMMA), has many disadvantages including that it does not promote bone regeneration or conduction. Vancomycin-loaded bone-like hydroxyapatite/poly amino acid (V-BHA/PAA) was successfully fabricated by a homogeneous method, certified as biosafe and known to promote osteogenesis. To evaluate its drug-release features, the quantity of the vancomycin in the elution was obtained every 2 days after in vitro simulated body fluid immersion. The drug concentration in the elution was determined to obtain the drug-release curve. The in vitro drug release was a three-phase process with two release peaks. Its antibacterial activity was evaluated in vitro using an antibacterial zone assay, antibacterial inhibition, and scanning electron microscopy (SEM) observation. Scaffolds of V-BHA/PAA were implanted into a rabbit model of chronic osteomyelitis. The antibacterial activity of the material was evaluated in vivo by gross observations, X-ray, and histological and ultrastructural observations. During the first 48 h, the vancomycin release was more rapid, followed by a period of sustained slow release. Use of V-BHA/PAA could achieve relatively long-term vancomycin delivery of 38 days in vitro and 42 days in vivo. V-BHA/PAA showed a significant and consistent bactericidal effect toward both Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) in vitro and in vivo. Moreover, the bactericidal effect was stronger than that of vancomycin-loaded polymethyl methacrylate (V-PMMA). The duration of the antibacterial effect of V-BHA/PAA toward both S. aureus and MRSA exceeded 28 days in vitro, while that of V-PMMA lasted only 14 days. The curative rate for V-BHA/PAA in the chronic osteomyelitis model was 75% for regular S. aureus and 66.67% for MRSA infection, which significantly exceeded that of V-PMMA (50% and 41.67%, respectively). Vancomycin released from the V-BHA/PAA scaffold was significantly superior to that delivered by V-PMMA. Keywords: chronic osteomyelitis, vancomycin, drug release, scaffold, local antibiotics delivery, BHA/PAA
format	article
author	Cao Z Jiang D Yan L Wu J
author_facet	Cao Z Jiang D Yan L Wu J
author_sort	Cao Z
title	In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
title_short	In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
title_full	In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
title_fullStr	In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
title_full_unstemmed	In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
title_sort	in vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold
publisher	Dove Medical Press
publishDate	2017
url	https://doaj.org/article/69dd51eb80074ec3a662da4d349e619e
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In vitro and in vivo drug release and antibacterial properties of the novel vancomycin-loaded bone-like hydroxyapatite/poly amino acid scaffold

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