1
|
Cui R, Tang H, Huang Q, Ye T, Chen J, Huang Y, Hou C, Wang S, Ramadan S, Li B, Xu Y, Xu L, Li D. AI-assisted smartphone-based colorimetric biosensor for visualized, rapid and sensitive detection of pathogenic bacteria. Biosens Bioelectron 2024; 259:116369. [PMID: 38781695 DOI: 10.1016/j.bios.2024.116369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 05/02/2024] [Accepted: 05/04/2024] [Indexed: 05/25/2024]
Abstract
Accurate and effective detection is essential to against bacterial infection and contamination. Novel biosensors, which detect bacterial bioproducts and convert them into measurable signals, are attracting attention. We developed an artificial intelligence (AI)-assisted smartphone-based colorimetric biosensor for the visualized, rapid, sensitive detection of pathogenic bacteria by measuring the bacteria secreted hyaluronidase (HAase). The biosensor consists of the chlorophenol red-β-D-galactopyranoside (CPRG)-loaded hyaluronic acid (HA) hydrogel as the bioreactor and the β-galactosidase (β-gal)-loaded agar hydrogel as the signal generator. The HAase degrades the bioreactor and subsequently determines the release of CPRG, which could further react with β-gal to generate signal colors. The self-developed YOLOv5 algorithm was utilized to analyze the signal colors acquired by smartphone. The biosensor can provide a report within 60 min with an ultra-low limit of detection (LoD) of 10 CFU/mL and differentiate between gram-positive (G+) and gram-negative (G-) bacteria. The proposed biosensor was successfully applied in various areas, especially the evaluation of infections in clinical samples with 100% sensitivity. We believe the designed biosensor has the potential to represent a new paradigm of "ASSURED" bacterial detection, applicable for broad biomedical uses.
Collapse
Affiliation(s)
- Rongwei Cui
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Huijing Tang
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Qing Huang
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Tingsong Ye
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Jiyang Chen
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yinshen Huang
- School of Biomedical Engineering, Sun Yat-sen University, Shenzhen, 518107, China
| | - Chongchao Hou
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Sihua Wang
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Sami Ramadan
- Department of Materials, Imperial College London, London, SW7 2AZ, UK
| | - Bing Li
- Institute for Materials Discovery, Department of Chemistry, University College London, London, WC1E 7JE, UK
| | - Yunsheng Xu
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Shenzhen Key Laboratory of Chinese Medicine Active Substance Screening and Translational Research, Shenzhen, 518107, China
| | - Lizhou Xu
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311215, China.
| | - Danyang Li
- Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China; Shenzhen Key Laboratory of Chinese Medicine Active Substance Screening and Translational Research, Shenzhen, 518107, China.
| |
Collapse
|
2
|
Zheng X, Ouyang Y, Fan H, Zhang L, Wang S, Zeng Y, Hu L, Zhao J. Molybdesum selenide-based platelet-rich plasma containing carboxymethyl chitosan/polyvinyl pyrrolidone composite antioxidant hydrogels dressing promotes the wound healing. J Nanobiotechnology 2024; 22:217. [PMID: 38725012 PMCID: PMC11080249 DOI: 10.1186/s12951-024-02490-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
Excess free radicals at the wound site can cause an inflammatory response, which is not conducive to wound healing. Hydrogels with antioxidant properties can prevent inflammatory storms by scavenging free radicals from the wound site and inhibiting the release of inflammatory factors. In this study, we prepared the carboxymethyl chitosan (CMCS)/polyvinyl pyrrolidone (PVP)/Molybdenum (IV) Selenide (MoSe2), and platelet-rich plasma (PRP) (CMCS/PVP/MoSe2/PRP) hydrogels for accelerating the repair of wounds. In the hydrogels, the MoSe2 can scavenge various free radicals to reduce oxidative stress at the site of inflammation, endowed the hydrogels with antioxidant properties. Interestingly, growth factors released by PRP assisted the tissue repair by promoting the formation of new capillaries. CMCS as a backbone not only showed good biocompatibility and biodegradability but also played a significant role in maintaining the sustained release of growth factors. In addition, incorporating PVP enhanced the tissue adhesion and mechanical properties. The multifunctional composite antioxidant hydrogels have good swelling properties and biodegradability, which is completely degraded within 28 days. Thus, the antioxidant CMCS/PVP/MoSe2/PRP hydrogels provide a new idea for designing ideal multifunctional wound dressings.
Collapse
Affiliation(s)
- Xiaoyi Zheng
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, No. 168 Changhai Road, Shanghai, 200433, P. R. China
| | - Yongliang Ouyang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai, 200093, P. R. China
| | - Hengwei Fan
- Department of Hepatic Surgery Department, the Eastern Hepatobiliary Surgery Hospital, Navy Medical University, No. 225 Changhai Road, Shanghai, 200438, P. R. China
| | - Liying Zhang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai, 200093, P. R. China
| | - Shige Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai, 200093, P. R. China
| | - Yanbo Zeng
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, No. 168 Changhai Road, Shanghai, 200433, P. R. China.
| | - Lianghao Hu
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, No. 168 Changhai Road, Shanghai, 200433, P. R. China.
| | - Jiulong Zhao
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, No. 168 Changhai Road, Shanghai, 200433, P. R. China.
| |
Collapse
|
3
|
Ren X, Wang X, Yang J, Zhang X, Du B, Bai P, Li L, Zhang R. Multi-Enzyme-Based Superabsorbent Hydrogel for Self-Enhanced NIR-II Photothermal-Catalytic Antibacterial Therapy. Adv Healthc Mater 2024; 13:e2303537. [PMID: 38060436 DOI: 10.1002/adhm.202303537] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/02/2023] [Indexed: 05/08/2024]
Abstract
The synergistic strategy of nanozyme-based catalytic therapy and photothermal therapy holds great potential for combating bacterial infection. However, challenges such as single and limited enzyme catalytic property, unfavorable catalytic environment, ineffective interaction between nanozymes and bacteria, unsafe laser irradiation ranges, and failed trauma fluid management impede their antibacterial capability and wound healing speed. Herein, for the first time, a PNMn hydrogel is fabricated with multi-enzyme activities and excellent near-infrared (NIR)-II photothermal performance for self-enhanced NIR-II photothermal-catalytic capabilities to efficiently eradicate bacteria. This hydrogel triggers parallel and cascade reactions to generate •OH, •O2 -, and 1O2 radicals from H2O2 and O2 without external energy input. Notably, it provides a suitable catalytic environment while capturing bacteria (≈30.1% of Escherichia coli and ≈29.3% of Staphylococcus aureus) to reinforce antibacterial activity. Furthermore, the PNMn hydrogel expedites skin wound healing by managing excess fluid (swelling rate up to ≈7299%). The PNMn hydrogel possesses remarkable stretching, elasticity, toughness, and adhesive characteristics under any shape of the wound, thus making it suitable for wound dressing. Therefore, the PNMn hydrogel has great potential to be employed as a next-generation wound dressing in the clinical context, providing a non-antibiotic strategy to improve the antibacterial performance and promote wound healing.
Collapse
Affiliation(s)
- Xiaofeng Ren
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan, 030001, P. R. China
| | - Xiaozhe Wang
- The Radiology Department of First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Jie Yang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, 030032, P. R. China
| | - Xiaoyu Zhang
- The Radiology Department of First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Baojie Du
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, 030032, P. R. China
| | - Peirong Bai
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, 030032, P. R. China
| | - Liping Li
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan, 030001, P. R. China
- The Radiology Department of First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Ruiping Zhang
- The Radiology Department of First Hospital of Shanxi Medical University, Taiyuan, 030001, China
| |
Collapse
|
4
|
Zhang Y, Tian X, Zhang K, Zhao K, Wang Y, Ma C, Guo J, Wang W. Construction of phenolic acids grafted chitosan bioactive microspheres to reduce oxidation and iron absorption in meat digestion. Int J Biol Macromol 2024; 265:130897. [PMID: 38490376 DOI: 10.1016/j.ijbiomac.2024.130897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 02/21/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Although iron in meat is an important trace element for human diet, its presence also induces postprandial oxidative stress and aggravates the condition of patients with iron overload. To overcome this situation, a type of new tunable Fe-absorption bioactive materials was constructed in this study. First, four phenolic acids (Caffeic acid, Gallic acid, Protocatechuic acid, Chlorogenic acid) were grafted onto chitosan. Then, the copolymers were prepared into micron-level microspheres by emulsification method, which were characterized in adsorption isotherms (Langmuir model), swelling behavior and digestion characteristics. In order to verify the practical application effect of microspheres, Protocatechuic acid grafted chitosan microspheres as the representative were used in sirloin powder to observe their effects in vitro digestion and rat experiment. In the present study, microspheres were innovatively applied in meat consumption, which significantly inhibited the oxidation of meat in the process of digestion and effectively controlled the iron absorption. These results are expected to play an important role in promoting the healthy consumption of meat around the world, improving gastrointestinal redox status through dietary assistance, and treating diseases related to iron overload.
Collapse
Affiliation(s)
- Yafei Zhang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Xiaojing Tian
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Kai Zhang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Kaixuan Zhao
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yang Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chenwei Ma
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Jingjing Guo
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Wenhang Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
| |
Collapse
|
5
|
Ortega IV, Şener Raman T, Schulze A, Flors C. In Situ Single-Cell Bacterial Imaging Provides Mechanistic Insight into the Photodynamic Action of Photosensitizer-Loaded Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2024; 16:5677-5682. [PMID: 38284232 DOI: 10.1021/acsami.3c17916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Hydrogels, three-dimensional hydrophilic polymeric networks with high water retaining capacity, have gained prominence in wound management and drug delivery due to their tunability, softness, permeability, and biocompatibility. Electron-beam polymerized poly(ethylene glycol) diacrylate (PEGDA) hydrogels are particularly useful for phototherapies such as antimicrobial photodynamic therapy (aPDT) due to their excellent optical properties. This work takes advantage of the transparency of PEGDA hydrogels to investigate bacterial responses to aPDT at the single-cell level, in real-time and in situ. The photosensitizer methylene blue (MB) was loaded in PEGDA hydrogels by using two methods: reversible loading and irreversible immobilization within the 3D polymer network. MB release kinetics and singlet oxygen generation were studied, revealing the distinct behaviors of both hydrogels. Real-time imaging of Escherichia coli was conducted during aPDT in both hydrogel types, using the Min protein system to report changes in bacterial physiology. Min oscillation patterns provided mechanistic insights into bacterial photoinactivation, revealing a dependence on the hydrogel preparation method. This difference was attributed to the mobility of MB within the hydrogel, affecting its direct interaction with bacterial membranes. These findings shed light on the complex interplay between hydrogel properties and the bacterial response during aPDT, offering valuable insights for the development of antibacterial wound dressing materials. The study demonstrates the capability of real-time, single-cell fluorescence microscopy to unravel dynamic bacterial behaviors in the intricate environment of hydrogel surfaces during aPDT.
Collapse
Affiliation(s)
- Ingrid V Ortega
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
| | - Tuğçe Şener Raman
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany
| | - Agnes Schulze
- Leibniz Institute of Surface Engineering (IOM), Permoserstraße 15, Leipzig 04318, Germany
| | - Cristina Flors
- Madrid Institute for Advanced Studies in Nanoscience (IMDEA Nanociencia), C/Faraday 9, Madrid 28049, Spain
- Nanobiotechnology Unit Associated to the National Center for Biotechnology (CNB-CSIC-IMDEA), C/Faraday 9, Madrid 28049, Spain
| |
Collapse
|
6
|
Xu K, Zhang Q, Zhu D, Jiang Z. Hydrogels in Gene Delivery Techniques for Regenerative Medicine and Tissue Engineering. Macromol Biosci 2024:e2300577. [PMID: 38265144 DOI: 10.1002/mabi.202300577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/16/2024] [Indexed: 01/25/2024]
Abstract
Hydrogels are 3D networks swollen with water. They are biocompatible, strong, and moldable and are emerging as a promising biomedical material for regenerative medicine and tissue engineering to deliver therapeutic genes. The excellent natural extracellular matrix simulation properties of hydrogels enable them to be co-cultured with cells or enhance the expression of viral or non-viral vectors. Its biocompatibility, high strength, and degradation performance also make the action process of carriers in tissues more ideal, making it an ideal biomedical material. It has been shown that hydrogel-based gene delivery technologies have the potential to play therapy-relevant roles in organs such as bone, cartilage, nerve, skin, reproductive organs, and liver in animal experiments and preclinical trials. This paper reviews recent articles on hydrogels in gene delivery and explains the manufacture, applications, developmental timeline, limitations, and future directions of hydrogel-based gene delivery techniques.
Collapse
Affiliation(s)
- Kexing Xu
- Zhejiang University School of Medicine, Hangzhou, China
| | - Qinmeng Zhang
- Zhejiang University School of Medicine, Hangzhou, China
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Danji Zhu
- Zhejiang University School of Medicine, Hangzhou, China
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Zhiwei Jiang
- Zhejiang University School of Medicine, Hangzhou, China
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| |
Collapse
|
7
|
Xu A, Zhang N, Su S, Shi H, Lu D, Li X, Zhang X, Feng X, Wen Z, Ma G, Huang M, Huang C, Hu Y, Yuan H, Liu Q, Guan D, Wang J, Duan C. A highly stretchable, adhesive, and antibacterial hydrogel with chitosan and tobramycin as dynamic cross-linkers for treating the infected diabetic wound. Carbohydr Polym 2024; 324:121543. [PMID: 37985115 DOI: 10.1016/j.carbpol.2023.121543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/25/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023]
Abstract
Diabetic wounds pose a significant challenge due to their susceptibility to bacterial infection in a high-glucose environment, which impedes the wound healing process. To address this issue, there is a pressing need to develop suitable hydrogels that can promote the regeneration of diabetic wounds in clinical practice. In this study, we designed and fabricated a highly stretchable, adhesive, transparent, and antibacterial hydrogel through a one-pot radical polymerization of N-[Tris (hydroxymethyl) methyl] acrylamide (THMA) and acrylic acid (AA), and with chitosan and the antibiotic tobramycin as the dynamic physical crosslinkers. The copolymer contains a large number of carboxyl and hydroxyl groups, which can form an interpenetrating network structure with chitosan and tobramycin through multiple dynamic non-covalent bonds. This hydrogel exhibited over 1600 % elongation through an energy dissipation mechanism and strong adhesion to various surfaces without any chemical reaction. In vivo, studies conducted on a staphylococcus aureus-infected full-thickness diabetic skin wound model demonstrated that the hydrogel loaded with tobramycin as one of the crosslinkers had a long-lasting antibacterial activity and effectively accelerated wound healing. Therefore, the antibiotic-loaded adhesive hydrogel we proposed holds great promise as a treatment for bacteria-infected diabetic wounds.
Collapse
Affiliation(s)
- Anqi Xu
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Nan Zhang
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Shixing Su
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Hongyu Shi
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Daoqiang Lu
- School of Life Science and Engineering, Foshan University, Foshan 528000, Guangdong, China
| | - Xifeng Li
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Xin Zhang
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Xin Feng
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Zhuohua Wen
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Gengwu Ma
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Mengshi Huang
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Chi Huang
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Yuqi Hu
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Hao Yuan
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China
| | - Qinwen Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Daogang Guan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, Guangdong, China
| | - Jun Wang
- School of Medicine, Foshan University, Foshan 528000, Guangdong, China.
| | - Chuanzhi Duan
- Department of Cerebrovascular Surgery, Engineering Technology Research Center of Education Ministry of China, Neurosurgery Center, Zhujiang Hospital of Southern Medical University, Guangzhou 510280, Guangdong, China.
| |
Collapse
|
8
|
Nasution H, Harahap H, Julianti E, Safitri A, Jaafar M. Smart Packaging Based on Polylactic Acid: The Effects of Antibacterial and Antioxidant Agents from Natural Extracts on Physical-Mechanical Properties, Colony Reduction, Perishable Food Shelf Life, and Future Prospective. Polymers (Basel) 2023; 15:4103. [PMID: 37896347 PMCID: PMC10611019 DOI: 10.3390/polym15204103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/04/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Changes in consumer lifestyles have raised awareness of a variety of food options and packaging technologies. Active and smart packaging is an innovative technology that serves to enhance the safety and quality of food products like fruit, vegetables, fish, and meat. Smart packaging, as a subset of this technology, entails the integration of additives into packaging materials, thereby facilitating the preservation or extension of product quality and shelf life. This technological approach stimulates a heightened demand for safer food products with a prolonged shelf life. Active packaging predominantly relies on the utilization of natural active substances. Therefore, the combination of active substances has a significant impact on the characteristics of active packaging, particularly on polymeric blends like polylactic acid (PLA) as a matrix. Therefore, this review will summarize how the addition of natural active agents influences the performance of smart packaging through systematic analysis, providing new insights into the types of active agents on physical-mechanical properties, colony reduction, and its application in foods. Through their integration, the market for active and smart packaging systems is expected to have a bright future.
Collapse
Affiliation(s)
- Halimatuddahliana Nasution
- Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Padang Bulan, Kec. Medan Baru, Medan 20155, Sumatera Utara, Indonesia; (H.H.); (A.S.)
| | - Hamidah Harahap
- Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Padang Bulan, Kec. Medan Baru, Medan 20155, Sumatera Utara, Indonesia; (H.H.); (A.S.)
| | - Elisa Julianti
- Department of Food and Science Technology, Faculty of Agriculture, Universitas Sumatera Utara, Padang Bulan, Kec. Medan Baru, Medan 20155, Sumatera Utara, Indonesia;
| | - Aida Safitri
- Department of Chemical Engineering, Faculty of Engineering, Universitas Sumatera Utara, Padang Bulan, Kec. Medan Baru, Medan 20155, Sumatera Utara, Indonesia; (H.H.); (A.S.)
| | - Mariatti Jaafar
- School of Materials & Mineral Resources Engineering, Universiti Sains Malaysia, Nibong Tebal 14300, Pulau Pinang, Malaysia;
| |
Collapse
|
9
|
El Fadl FIA, Hegazy DE, Maziad NA, Ghobashy MM. Effect of nano-metal oxides (TiO 2, MgO, CaO, and ZnO) on antibacterial property of (PEO/PEC-co-AAm) hydrogel synthesized by gamma irradiation. Int J Biol Macromol 2023; 250:126248. [PMID: 37562465 DOI: 10.1016/j.ijbiomac.2023.126248] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 07/14/2023] [Accepted: 08/07/2023] [Indexed: 08/12/2023]
Abstract
The global threat of infectious diseases and antibiotic resistance calls for the development of potent antimicrobial agents integrated with hydrogel for effective control and treatment. Hydrogel is advanced biomaterials compounds. Hydrogel is an advanced biomaterial compound that offers tunable physical and chemical properties, which can be tailored to specific biomedical applications. This study investigates the antibacterial properties of pectin/polyethylene oxide (PEC/PEO)-based poly acrylamide hydrogels containing 5 wt% nano-metal oxides (TiO2, CaO, MgO, and ZnO) synthesized through gamma irradiation at a dose of 30 kGy. This technique allows for sterilization and effectively incorporating the metal oxide nanoparticles within the hydrogel matrix. Characterization of the nanocomposites is performed using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Incorporating metal oxide nanoparticles induces noticeable changes in the FTIR spectra, confirming interactions between the nanoparticles and the hydrogel matrix. The antibacterial activity of the nanocomposites is evaluated against different bacteria, and the results demonstrate significant inhibitory effects, especially for MgO- and ZnO-hydrogel nanocomposites against P. mirabilis, S. aureus, P. aeruginosa, and C. albicans, highlighting their potential as antimicrobial agents. The 5 wt% of MgO, ZnO, TiO2 and CaO inside PEO/PEC-co-AAm hydrogel nanocomposites exhibited significant inhibitory effects, with a respective optical density at λ = 600 nm (OD600) values of 0.896 nm, 0.986 nm, 1.250 nm, and 1.980 nm compared to the control and hydrogel alone (OD600 values of 2.88 nm and 2.72 nm, respectively). The antibacterial activity of the (MgO-, ZnO-, TiO2-, and CaO-hydrogel) was enhanced, resulting in the inhibition of S. aureus growth by approximately 68.89 %, 65.86 %, 56.25 %, and 31.94 %, respectively. Incorporating nanoparticles into a hydrogel matrix introduces novelty by preventing their aggregation and synergistically enhancing the antibacterial activity. The hydrogel's porous structure and water content facilitate the physical entrapment of bacteria and promote proximity to the metal oxide nanoparticles, resulting in improved interaction and antimicrobial effectiveness. Moreover, the hydrogel ability to absorb and entrap resistance compounds released by bacteria, coupled with its ability to supply water for the generation of reactive oxygen species, further contributes to its antimicrobial properties.
Collapse
Affiliation(s)
- Faten Ismail Abou El Fadl
- Radiation Research of Polymer Chemistry Department, Industrial Irradiation Division, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, P.O. Box 8029, Cairo, Egypt.
| | - Dalia E Hegazy
- Radiation Research of Polymer Chemistry Department, Industrial Irradiation Division, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, P.O. Box 8029, Cairo, Egypt
| | - Nabila A Maziad
- Radiation Research of Polymer Chemistry Department, Industrial Irradiation Division, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, P.O. Box 8029, Cairo, Egypt
| | - Mohamed Mohamady Ghobashy
- Radiation Research of Polymer Chemistry Department, Industrial Irradiation Division, National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority, P.O. Box 8029, Cairo, Egypt.
| |
Collapse
|
10
|
Foreman K, Tran-Ba KH. Single-Particle Tracking in Poly(Ethylene Glycol) Diacrylate: Probe Size Effect on the Diffusion Behaviors of Nanoparticles in Unentangled Polymer Solutions. J Phys Chem B 2023; 127:7091-7102. [PMID: 37527454 DOI: 10.1021/acs.jpcb.3c03499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
A thorough understanding of the relevant factors governing the transport of nanoparticles in poly(ethylene glycol) diacrylate (PEGDA) is crucial for many applications utilizing this polymer. Here, single-particle tracking (SPT) was used to systematically investigate the role of the probe size (3-200 nm) on the diffusion behaviors of individual fluorescent nanoparticles in semidilute and unentangled PEGDA solutions. The quantitative assessment of the SPT data via the recorded single-particle trajectories and diffusion coefficients (D) not only showed that the observed probe dynamics in PEGDA were temporally and spatially heterogeneous, but more importantly that the measured D were observed to be significantly reduced (vs in solvent) and strongly size-dependent. We explained these results based on a modified multiscale model for particle diffusion, built upon well-established hydrodynamics and obstruction theories. We furthermore showed that the presence of steric interactions and probe confinement effects in highly crowded, unentangled PEGDA microstructures can lead to deviations in the single-particle displacements from the expected Gaussian behavior, as revealed by the van Hove displacement distributions and the associated non-Gaussian parameters. This study has demonstrated the power of SPT methods in offering an advanced characterization of the transport characteristics in complex polymer structures, overcoming challenges posed by traditional characterization techniques.
Collapse
Affiliation(s)
- Kathryn Foreman
- Department of Chemistry, Towson University, Towson, Maryland 21252, United States
| | - Khanh-Hoa Tran-Ba
- Department of Chemistry, Towson University, Towson, Maryland 21252, United States
| |
Collapse
|
11
|
Recent progress of antibacterial hydrogels in wound dressings. Mater Today Bio 2023; 19:100582. [PMID: 36896416 PMCID: PMC9988584 DOI: 10.1016/j.mtbio.2023.100582] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/26/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Hydrogels are essential biomaterials due to their favorable biocompatibility, mechanical properties similar to human soft tissue extracellular matrix, and tissue repair properties. In skin wound repair, hydrogels with antibacterial functions are especially suitable for dressing applications, so novel antibacterial hydrogel wound dressings have attracted widespread attention, including the design of components, optimization of preparation methods, strategies to reduce bacterial resistance, etc. In this review, we discuss the fabrication of antibacterial hydrogel wound dressings and the challenges associated with the crosslinking methods and chemistry of the materials. We have investigated the advantages and limitations (antibacterial effects and antibacterial mechanisms) of different antibacterial components in the hydrogels to achieve good antibacterial properties, and the response of hydrogels to stimuli such as light, sound, and electricity to reduce bacterial resistance. Conclusively, we provide a systematic summary of antibacterial hydrogel wound dressings findings (crosslinking methods, antibacterial components, antibacterial methods) and an outlook on long-lasting antibacterial effects, a broader antibacterial spectrum, diversified hydrogel forms, and the future development prospects of the field.
Collapse
|