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Revathi S, Amanullah M, Al-Samghan AS, Joseph JJ, Pazhanisamy P, Addich M, Gomathi T. Sustainable heavy metal (Cr(VI) ion) remediation: Ternary blend approach with chitosan, carboxymethyl cellulose, and bioactive glass. Int J Biol Macromol 2024; 278:134769. [PMID: 39151866 DOI: 10.1016/j.ijbiomac.2024.134769] [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: 06/29/2024] [Revised: 08/04/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Heavy metal pollution poses a significant environmental challenge to worldwide, especially in developing countries. This study focuses on eliminating the heavy metal chromium (VI) ion from wastewater, employing an eco-friendly and economical ternary blend composed of Chitosan (CS), Carboxymethyl cellulose (CMC), and bioactive glass (BAG). The innovative bioactive glass is crafted from biosilica extracted from biowaste of cow dung ash, calcium oxide from eggshell ash, and phosphorus pentoxide. The CS/CMC/BAG blend is prepared via sol-gel method and characterized using XRD, FT-IR, TGA, BET, TEM and SEM revealing a porous structural morphology during blending. Batch adsorption studies explore various parameters such as pH, adsorbent dose, contact time and initial metal ion concentrations. The results are then evaluated through adsorption kinetics and adsorption isotherms (Langmuir, Freundlich, D-R, and Temkin isotherm modeling). The investigation concludes that the optimal conditions for Cr (VI) removal are pH 3, contact time of 300 min, adsorbent dosage of 0.5 g, and an initial metal ion concentration of 50 ppm. The adsorption isotherm model indicates an excellent fit with the Freundlich isotherm (R2 = 0.9576) and pseudo-second-order kinetics (R2 = 0.981). In summary, the CS/CMC/BAG ternary blend exhibits a remarkable ability to effectively remove heavy metal Cr(VI) ions from industrial wastewater.
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Affiliation(s)
- S Revathi
- PG and Research Department of Chemistry, D.K.M. College for Women (Autonomous), Affiliated to Thiruvalluvar University, Vellore, Tamil Nadu, India
| | - Mohammed Amanullah
- Department of Clinical Biochemistry, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Awad Saeed Al-Samghan
- Department of Family and Community Medicine, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | | | - P Pazhanisamy
- Department of Chemistry, Sir Theagaraya College, Affiliated to University of Madras, Chennai 600021, India
| | - Mourad Addich
- Laboratory of Analysis, Modeling, Engineering, Natural Substances and Environment, Polydisciplinary Faculty of Taroudant, University Ibn Zohr, Taroudant, Morocco
| | - Thandapani Gomathi
- PG and Research Department of Chemistry, D.K.M. College for Women (Autonomous), Affiliated to Thiruvalluvar University, Vellore, Tamil Nadu, India.
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Xu J, Lin Y, Wang Y, Gao H, Li Y, Zhang C, Chen Q, Chen S, Peng Q. Multifunctional Regeneration Silicon-Loaded Chitosan Hydrogels for MRSA-Infected Diabetic Wound Healing. Adv Healthc Mater 2024; 13:e2303501. [PMID: 37956229 DOI: 10.1002/adhm.202303501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Indexed: 11/15/2023]
Abstract
Repeated microbial infection, excess reactive oxygen species (ROS) accumulation, cell dysfunction, and impaired angiogenesis under hyperglycemia severely inhibit diabetic wound healing. Therefore, developing multifunctional wound dressings accommodating the complex microenvironment of diabetic wounds is of great significance. Here, a multifunctional hydrogel (Regesi-CS) is prepared by loading regeneration silicon (Regesi) in the non-crosslinked chitosan (CS) solution, followed by freeze-drying and hydration. As expected, the blank non-crosslinked CS hydrogel (1%) shows great antibacterial activity against Escherichia coli, Staphylococcus aureus, and methicillin-resistant S. aureus (MRSA), improves fibroblast migration, and scavenges intracellular ROS. Interestingly, after loading 1% Regesi, the Regesi-CS (1%-1%) hydrogel shows greater antibacterial activity, significantly promotes fibroblasts proliferation and migration, scavenges much more ROS, and substantially protects fibroblasts under oxidative stress, yet Regesi alone has no or even negative effects. In the MRSA-infected diabetic wound model, Regesi-CS (1%-1%) hydrogel effectively promotes wound healing by eliminating bacterial infection, enhancing granulation tissue formation, promoting collagen deposition, and improving angiogenesis. In conclusion, Regesi-CS hydrogel may be a potential wound dressing for the effective treatment and management of chronic diabetic wounds.
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Affiliation(s)
- Jingchen Xu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
- Department of Dental Medical Center, China-Japan Friendship Hospital, Beijing, 100029, China
| | - Yao Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yue Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Hongyu Gao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Yuanhong Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Chaoliang Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Qianming Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Song Chen
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Qiang Peng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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Chen Y, Hu F, Guo C, Dong X, Wang H, Qin Y. Ecofriendly and scalable production of bioglass using an organic calcium source enhanced bioactivity for tissue repair. Biomed Mater 2024; 19:035001. [PMID: 38387060 DOI: 10.1088/1748-605x/ad2c1b] [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: 10/10/2023] [Accepted: 02/22/2024] [Indexed: 02/24/2024]
Abstract
The eco-friendly and scalable production of bioglass remains a challenging but attractive strategy for advancing its widespread biomedical applications. Although the sol-gel method has been considered a valuable approach for bioglass production, the application of calcium nitrate as a calcium source markedly limits its industrialization owing to environmental pollution, high administration costs, and numerous calcium-rich regions in the as-prepared bioglass. Therefore, organic Ca has been proposed as an alternative to inorganic Ca. In the current study, bioglass was successfully prepared using a novel calcium source (calcium glycerol) and was named regeneration silicon (RegeSi). The biocompatibity of bioglass was examined by performing the methyl thiazolyl tetrazolium (MTT) assay using L929 fibroblasts. The biological and tissue repair properties of RegeSi were better than those of bioglass prepared with calcium nitrate using the sol-gel or traditional melting methods. The applicability of RegeSi was validated using suitable wound healing and dental restoration models. Notably, RegeSi ensured closure of a deep wound (1.6 cm diameter, 2 mm depth) within 11 d. Moreover, RegeSi facilitated tooth repair with a blocking rate of 97.1%. More importantly, large-scale production of RegeSi was achieved at low cost, high bioactivity, and using environmental technology, reaching a capacity of 100 kg/batch.
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Affiliation(s)
- Yun Chen
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
- School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China
| | - Fang Hu
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
| | - Chuangzhou Guo
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
| | - Xihua Dong
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
| | - Hai Wang
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
| | - Yue Qin
- Beijing Best Life Regenerative Medicine Technology Co., Ltd, Beijing 101200, People's Republic of China
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Swaminathan U, Marimuthu K, Kasinathan K, Choi HK, Sivakumar P, Krishnasamy R, Palanisamy R. Synthesis of novel liquid phase exfoliation of chitosan/Bi 2Se 3 hybrid nanocomposites for in-vitro wound healing. Int J Biol Macromol 2024; 255:128257. [PMID: 37984575 DOI: 10.1016/j.ijbiomac.2023.128257] [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: 08/21/2023] [Revised: 10/20/2023] [Accepted: 11/17/2023] [Indexed: 11/22/2023]
Abstract
Numerous studies have recently established the potential of chitosan (Chi) to enhance wound healing. Chi is a carbohydrate biopolymer that is biocompatible, low-cost, toxic-free, and has excellent antibacterial properties. In this study, we synthesized Chi/Bi2Se3 hybrid nanocomposites (NCs) using a liquid exfoliation approach. The physicochemical characterization of the hybrid NCs was investigated using X-ray diffraction, Fourier transforms infrared, Thermogravimetric, Scanning electron microscope, and Transmission electron microscope. The antibacterial ability has been investigated versus two pathogens, S. aureus and E. coli. In comparison to bare materials, the hybrid NCs demonstrated better antibacterial activity against both bacterial strains. As a result, the electrostatic attraction of positively charged Chi can easily attract the negatively charged surface of the bacteria cell membrane and NCs generate reactive oxygen species (ROS). This ROS can attack bacteria's intracellular components and eventually kill bacteria. The biocompatibility of the Chi/Bi2Se3 NCs was evaluated against L929 mice fibroblast cells, and there was no evident cytotoxicity. Furthermore, an in-vitro wound scratch test was carried out on L929 mouse fibroblast cells and the Chi/Bi2Se3 hybrid NCs promote wound healing and cell proliferation. These findings suggest that the Chi/Bi2Se3 hybrid NCs as a promising future material for bacteria-infected in-vivo wound healing.
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Affiliation(s)
- Usha Swaminathan
- Thin Film and Nanoscience Research Lab, PG and Research Department of Physics, Alagappa Government Arts College (Affiliated to Alagappa University, Karaikudi), Karaikudi 630 003, India
| | - Karunakaran Marimuthu
- Thin Film and Nanoscience Research Lab, PG and Research Department of Physics, Alagappa Government Arts College (Affiliated to Alagappa University, Karaikudi), Karaikudi 630 003, India.
| | - Kasirajan Kasinathan
- Division of Advanced Materials Engineering, Kongju National University, Budaedong 275, Seobuk-gu, Cheonan-si, Chungnam 31080, South Korea
| | - Hong Kyoon Choi
- Division of Advanced Materials Engineering, Kongju National University, Budaedong 275, Seobuk-gu, Cheonan-si, Chungnam 31080, South Korea.
| | - Prabakaran Sivakumar
- Thin Film and Nanoscience Research Lab, PG and Research Department of Physics, Alagappa Government Arts College (Affiliated to Alagappa University, Karaikudi), Karaikudi 630 003, India
| | - Ravichandran Krishnasamy
- PG and Research Department of Physics, AVVM Sri Pushpam College (Affiliated to Bharathidasn University, Thiruchirappalli), Poondi, Thanjavur, Tamilnadu 613 503, India
| | - Rajkumar Palanisamy
- Department of Mechanical Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk-do 38541, South Korea
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An enduring in vitro wound healing phase recipient by bioactive glass-graphene oxide nanocomposites. Sci Rep 2022; 12:16162. [PMID: 36171341 PMCID: PMC9519557 DOI: 10.1038/s41598-022-20575-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 09/15/2022] [Indexed: 11/27/2022] Open
Abstract
Bioactive glass (BG) is an interesting topic in soft tissue engineering because of its biocompatibility and bonding potential to increase fibroblast cell proliferation, synthesize growth factors, and stimulate granulation tissue development. The proposed BG with and without sodium (Na), prepared by the sol–gel method, is employed in wound healing studies. The BG/graphene oxide (GO) and BG (Na-free)/GO nanocomposites were investigated against fibroblast L929 cells in vitro; the 45S5 BG nanocomposites exhibited desired cell viability (80%), cell proliferation (30%), cell migration (25%), metabolic activity, and wound contraction due to extracellular matrix (ECM) production and enhanced protein release by fibroblast cells. Additionally, the antioxidant assays for BG, BG (Na-free), GO, and BG/GO, BG (Na-free)/GO were evaluated for effective wound healing properties. The results showed decreased inflammation sites in the wound area, assessed by the (2,2-diphenyl-1-picryl-hydrazyl-hydrate) (DPPH) assay with ~ 80% radical scavenging activity, confirming their anti-inflammatory and improved wound healing properties.
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