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Dadi NCT, Radochová B, Vargová J, Bujdáková H. Impact of Healthcare-Associated Infections Connected to Medical Devices-An Update. Microorganisms 2021; 9:2332. [PMID: 34835457 PMCID: PMC8618630 DOI: 10.3390/microorganisms9112332] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 01/12/2023] Open
Abstract
Healthcare-associated infections (HAIs) are caused by nosocomial pathogens. HAIs have an immense impact not only on developing countries but also on highly developed parts of world. They are predominantly device-associated infections that are caused by the planktonic form of microorganisms as well as those organized in biofilms. This review elucidates the impact of HAIs, focusing on device-associated infections such as central line-associated bloodstream infection including catheter infection, catheter-associated urinary tract infection, ventilator-associated pneumonia, and surgical site infections. The most relevant microorganisms are mentioned in terms of their frequency of infection on medical devices. Standard care bundles, conventional therapy, and novel approaches against device-associated infections are briefly mentioned as well. This review concisely summarizes relevant and up-to-date information on HAIs and HAI-associated microorganisms and also provides a description of several useful approaches for tackling HAIs.
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Affiliation(s)
| | - Barbora Radochová
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia; (N.C.T.D.); (J.V.)
| | | | - Helena Bujdáková
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, 84215 Bratislava, Slovakia; (N.C.T.D.); (J.V.)
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Cheng X, Cao F, Zhong C, Wang M, Ye J, Liu Y, Zhang W, Yu F, Wu D, Wang X. Photoresponsive porous ZnO-based broad-spectrum venom first-aid treatment. Biomater Sci 2021; 9:4149-4158. [PMID: 33959736 DOI: 10.1039/d1bm00115a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A venomous snakebite is an emergency. However, antivenoms are rare and very similar, difficult to produce and preserve, and almost impossible to be used for emergency treatment. Therefore, it would be of great significance to develop convenient, efficient and broad-spectrum snake venom neutralizing nano-materials. In this study, inspired by boiled eggs, a new concept based on a ZnO complex (ZC) for the treatment of snake venoms is proposed. In vitro and in vivo experiments proved that ZC could widely adsorb biological (including snake) venoms and effectively reduce the concentration of toxic protein in the blood. More importantly, ZC could realize photothermal conversion under the stimulation of near-infrared (NIR) irradiation, resulting in protein hydrolyzation of venoms, thereby fundamentally prolonging survival time. In addition, ZC not only showed good biocompatibility, but also could inhibit bacterial reproduction, alleviate inflammation, and contribute to the healing of open wounds caused by biological venoms.
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Affiliation(s)
- Xinyan Cheng
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, China.
| | - Fei Cao
- The First Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Cailing Zhong
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi 330088, China
| | - Manyu Wang
- The National Engineering Research Center for Bioengineering Drugs and the Technologies: Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, China
| | - Jing Ye
- The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Yu Liu
- The Second Affiliated Hospital, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Wei Zhang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, China.
| | - Fen Yu
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, China.
| | - Dan Wu
- School of Public Administration, Nanchang University, Nanchang, Jiangxi 330088, China.
| | - Xiaolei Wang
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330088, China. and The National Engineering Research Center for Bioengineering Drugs and the Technologies: Institute of Translational Medicine, Nanchang University, Nanchang, Jiangxi 330088, China
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Li P, Cai W, Li X, Wang K, Zhou L, You T, Wang R, Chen H, Zhao Y, Wang J, Huang N. Preparation of phospholipid-based polycarbonate urethanes for potential applications of blood-contacting implants. Regen Biomater 2020; 7:491-504. [PMID: 33149938 PMCID: PMC7597807 DOI: 10.1093/rb/rbaa037] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/08/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022] Open
Abstract
Polyurethanes are widely used in interventional devices due to the excellent physicochemical property. However, non-specific adhesion and severe inflammatory response of ordinary polyurethanes may lead to severe complications of intravenous devices. Herein, a novel phospholipid-based polycarbonate urethanes (PCUs) were developed via two-step solution polymerization by direct synthesis based on functional raw materials. Furthermore, PCUs were coated on biomedical metal sheets to construct biomimetic anti-fouling surface. The results of stress–strain curves exhibited excellent tensile properties of PCUs films. Differential scanning calorimetry results indicated that the microphase separation of such PCUs polymers could be well regulated by adjusting the formulation of chain extender, leading to different biological response. In vitro blood compatibility tests including bovine serum albumin adsorption, fibrinogen adsorption and denaturation, platelet adhesion and whole-blood experiment showed superior performance in inhibition non-specific adhesion of PCUs samples. Endothelial cells and smooth muscle cells culture tests further revealed a good anti-cell adhesion ability. Finally, animal experiments including ex vivo blood circulation and subcutaneous inflammation animal experiments indicated a strong ability in anti-thrombosis and histocompatibility. These results high light the strong anti-adhesion property of phospholipid-based PCUs films, which may be applied to the blood-contacting implants such as intravenous catheter or antithrombotic surface in the future.
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Affiliation(s)
- Peichuang Li
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Wanhao Cai
- Institute of Physical Chemistry, University of Freiburg, Albertstraße 21a, Freiburg 79104, Germany
| | - Xin Li
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Kebing Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Lei Zhou
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Tianxue You
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Rui Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Hang Chen
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Yuancong Zhao
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Jin Wang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
| | - Nan Huang
- Key Lab. of Advanced Technology for Materials of Education Ministry, Southwest Jiaotong University, Chengdu 610031, China.,School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
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