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Takahashi C, Matsubara N, Akachi Y, Ogawa N, Kalita G, Asaka T, Tanemura M, Kawashima Y, Yamamoto H. Visualization of silver-decorated poly (DL-lactide-co-glycolide) nanoparticles and their efficacy against Staphylococcus epidermidis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 72:143-149. [PMID: 28024570 DOI: 10.1016/j.msec.2016.11.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/24/2016] [Accepted: 11/13/2016] [Indexed: 12/30/2022]
Abstract
Understanding of self-protection activity of the bacteria and interaction with drug substances has significant importance for designing of effective drug delivery system for treatment of biofilm infections. Recently silver nanoparticle has attracted attention as antibacterial substance for drug delivery system because of its high antibacterial activity. Here, efflux of silver nanoparticles obtained from within the prepared silver-decorated poly (DL-lactide-co-glycolide) (Ag PLGA) nanoparticles derived from Staphylococcus epidermidis bacterial cell was successfully visualized using scanning transmission electron microscopy (STEM). We also revealed the interaction between prepared Ag PLGA nanoparticles and the bacterial cells at the nanoscale level using field emission scanning electron microscopy and STEM, after a pretreatment process by an ionic liquid. This finding is significant to understand a fundamental function of S. epidermidis bacterial cells, which is not explored previously. The results suggest that Ag PLGA nanoparticles could demonstrate high efficacy against biofilm infections.
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Affiliation(s)
- Chisato Takahashi
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan.
| | - Nobuhiro Matsubara
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Yuki Akachi
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Noriko Ogawa
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Golap Kalita
- Department of Frontier Materials, Nagoya Institute of Technology, Gokisocho, Showa-ku, Nagoya 466-8555, Japan
| | - Toru Asaka
- Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokisocho, Showa-ku, Nagoya 466-8555, Japan
| | - Masaki Tanemura
- Department of Frontier Materials, Nagoya Institute of Technology, Gokisocho, Showa-ku, Nagoya 466-8555, Japan
| | - Yoshiaki Kawashima
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Hiromitsu Yamamoto
- Pharmaceutical Engineering, School of Pharmacy, Aichi Gakuin University, 1-100, Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
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Takahashi C, Akachi Y, Ogawa N, Moriguchi K, Asaka T, Tanemura M, Kawashima Y, Yamamoto H. Morphological study of efficacy of clarithromycin-loaded nanocarriers for treatment of biofilm infection disease. Med Mol Morphol 2016; 50:9-16. [PMID: 27119723 DOI: 10.1007/s00795-016-0141-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/11/2016] [Indexed: 11/24/2022]
Abstract
In this study, we developed a drug delivery system (DDS) using polymeric nanocarriers for the treatment of biofilm infection disease. Clarithromycin (CAM)-encapsulated and chitosan (CS) modified polymeric nanoparticles (NPs) were prepared using a polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer (Soluplus®) (Sol) and poly-(DL-lactide-co-glycolide), respectively. To understand the availability of the prepared NPs, we made morphological observations of the antibacterial activity derived from the NPs toward the bacterial cells within the biofilm using scanning electron microscopy and transmission electron microscopy measurements. These results revealed different antibacterial activities for the two types of drug carriers. In the case of CAM-encapsulated + CS-modified Sol micelles treatment, NPs can exert their antibacterial activity not only by the surfactant, CAM and CS effects but also by intrusion into the bacterial cells. Thereby, CAM-encapsulated + CS-modified Sol micelles had a higher antibacterial activity. The morphological information is useful to design suitable NPs for the treatment against biofilm infections.
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Affiliation(s)
- Chisato Takahashi
- School of Pharmacy, Pharmaceutical Engineering, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan.
| | - Yuki Akachi
- School of Pharmacy, Pharmaceutical Engineering, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Noriko Ogawa
- School of Pharmacy, Pharmaceutical Engineering, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Keiichi Moriguchi
- Department of Oral Anatomy, School of Dentistry, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Toru Asaka
- Department of Materials Science and Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
| | - Masaki Tanemura
- Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
| | - Yoshiaki Kawashima
- School of Pharmacy, Pharmaceutical Engineering, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
| | - Hiromitsu Yamamoto
- School of Pharmacy, Pharmaceutical Engineering, Aichi-Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya, Aichi, 464-8650, Japan
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Takahashi C, Muto S, Yamamoto H. A microscopy method for scanning transmission electron microscopy imaging of the antibacterial activity of polymeric nanoparticles on a biofilm with an ionic liquid. J Biomed Mater Res B Appl Biomater 2016; 105:1432-1437. [DOI: 10.1002/jbm.b.33680] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/09/2016] [Accepted: 03/29/2016] [Indexed: 12/26/2022]
Affiliation(s)
- Chisato Takahashi
- Pharmaceutical Engineering; School of Pharmacy; Aichi Gakuin University; Nagoya Aichi Japan
| | - Shunsuke Muto
- Institute of Materials and Systems for Sustainability; Nagoya University; Nagoya Aichi Japan
| | - Hiromitsu Yamamoto
- Pharmaceutical Engineering; School of Pharmacy; Aichi Gakuin University; Nagoya Aichi Japan
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Takahashi C, Ogawa N, Kawashima Y, Yamamoto H. Observation of antibacterial effect of biodegradable polymeric nanoparticles onStaphylococcus epidermidisbiofilm using FE-SEM with an ionic liquid. Microscopy (Oxf) 2015; 64:169-80. [DOI: 10.1093/jmicro/dfv010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 02/02/2015] [Indexed: 01/08/2023] Open
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Takahashi C, Saito S, Suda A, Ogawa N, Kawashima Y, Yamamoto H. Antibacterial activities of polymeric poly(dl-lactide-co-glycolide) nanoparticles and Soluplus® micelles against Staphylococcus epidermidis biofilm and their characterization. RSC Adv 2015. [DOI: 10.1039/c5ra13885j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We have successfully prepared polymeric micelles based on polyvinyl caprolactam–polyvinyl acetate–polyethylene glycol graft copolymer (Soluplus®) for a drug delivery system on a biofilm.
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Affiliation(s)
- Chisato Takahashi
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
| | - Shoko Saito
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
| | - Asami Suda
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
| | - Noriko Ogawa
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
| | - Yoshiaki Kawashima
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
| | - Hiromitsu Yamamoto
- Pharmaceutical Engineering
- School of Pharmacy
- Aichi Gakuin University
- Nagoya
- Japan
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