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Zhang C, Wang Y, Xue Y, Cheng J, Chi P, Wang Z, Li B, Yan T, Wu B, Wang Z. Enhanced Hemostatic and Procoagulant Efficacy of PEG/ZnO Hydrogels: A Novel Approach in Traumatic Hemorrhage Management. Gels 2024; 10:88. [PMID: 38391418 PMCID: PMC10888357 DOI: 10.3390/gels10020088] [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: 12/18/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 02/24/2024] Open
Abstract
Managing severe bleeding, particularly in soft tissues and visceral injuries, remains a significant challenge in trauma and surgical care. Traditional hemostatic methods often fall short in wet and dynamic environments. This study addresses the critical issue of severe bleeding in soft tissues, proposing an innovative solution using a polyethylene glycol (PEG)-based hydrogel combined with zinc oxide (ZnO). The developed hydrogel forms a dual-network structure through amide bonds and metal ion chelation, resulting in enhanced mechanical properties and adhesion strength. The hydrogel, exhibiting excellent biocompatibility, is designed to release zinc ions, promoting coagulation and accelerating hemostasis. Comprehensive characterization, including gelation time, rheological properties, microstructure analysis, and swelling behavior, demonstrates the superior performance of the PEG/ZnO hydrogel compared to traditional PEG hydrogels. Mechanical tests confirm increased compression strength and adhesive properties, which are crucial for withstanding tissue dynamics. In vitro assessments reveal excellent biocompatibility and enhanced procoagulant ability attributed to ZnO. Moreover, in vivo experiments using rat liver and tail bleeding models demonstrate the remarkable hemostatic performance of the PEG/ZnO hydrogel, showcasing its potential for acute bleeding treatment in both visceral and peripheral scenarios.
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Affiliation(s)
- Chuyue Zhang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Yifan Wang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Yuan Xue
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Junyao Cheng
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Pengfei Chi
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Zhaohan Wang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Bo Li
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Taoxu Yan
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
- Chinese PLA Medical School, Beijing 100853, China
| | - Bing Wu
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
| | - Zheng Wang
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
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2
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Thamilselvan G, David H, Sajeevan A, Rajaramon S, Solomon AP, Durai RD, Narayanan VHB. Polymer based dual drug delivery system for targeted treatment of fluoroquinolone resistant Staphylococcus aureus mediated infections. Sci Rep 2023; 13:11373. [PMID: 37452106 PMCID: PMC10349073 DOI: 10.1038/s41598-023-38473-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 07/09/2023] [Indexed: 07/18/2023] Open
Abstract
The present study attempts to treat S. aureus-induced soft skin infections using a combinatorial therapy with an antibiotic, Ciprofloxacin (CIP), and an efflux pump inhibitor 5-Nitro-2-(3-phenylpropoxy) pyridine (5-NPPP) through a smart hydrogel delivery system. The study aims to reduce the increasing rates of infections and antimicrobial resistance; therefore, an efflux pump inhibitor molecule is synthesized and delivered along with an antibiotic to re-sensitize the pathogen towards antibiotics and treat the infections. CIP-loaded polyvinyl alcohol (PVA) hydrogels at varying concentrations were fabricated and optimized by a chemical cross-linking process, which exhibited sustained drug release for 5 days. The compound 5-NPPP loaded hydrogels provided linear drug release for 2 days, necessitating the need for the development of polymeric nanoparticles to alter the release drug pattern. 5-NPPP loaded Eudragit RSPO nanoparticles were prepared by modified nanoprecipitation-solvent evaporation method, which showed optimum average particle size of 230-280 nm with > 90% drug entrapment efficiency. The 5-NPPP polymeric nanoparticles loaded PVA hydrogels were fabricated to provide a predetermined sustained release of the compound to provide a synergistic effect. The selected 7% PVA hydrogels loaded with the dual drugs were evaluated using Balb/c mice models induced with S. aureus soft skin infections. The results of in vivo studies were evidence that the dual drugs loaded hydrogels were non-toxic and reduced the bacterial load causing re-sensitization towards antibiotics, which could initiate re-epithelization. The research concluded that the PVA hydrogels loaded with CIP and 5-NPPP nanoparticles could be an ideal and promising drug delivery system for treating S. aureus-induced skin infections.
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Affiliation(s)
- Gopalakrishnan Thamilselvan
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
| | - Helma David
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
| | - Anusree Sajeevan
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
| | - Shobana Rajaramon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India.
| | - Ramya Devi Durai
- Pharmaceutical Technology Laboratory, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India.
| | - Vedha Hari B Narayanan
- Pharmaceutical Technology Laboratory, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
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3
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Pang Q, Jiang Z, Wu K, Hou R, Zhu Y. Nanomaterials-Based Wound Dressing for Advanced Management of Infected Wound. Antibiotics (Basel) 2023; 12:antibiotics12020351. [PMID: 36830262 PMCID: PMC9952012 DOI: 10.3390/antibiotics12020351] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/03/2023] [Accepted: 02/05/2023] [Indexed: 02/10/2023] Open
Abstract
The effective prevention and treatment of bacterial infections is imperative to wound repair and the improvement of patient outcomes. In recent years, nanomaterials have been extensively applied in infection control and wound healing due to their special physiochemical and biological properties. Incorporating antibacterial nanomaterials into wound dressing has been associated with improved biosafety and enhanced treatment outcomes compared to naked nanomaterials. In this review, we discuss progress in the application of nanomaterial-based wound dressings for advanced management of infected wounds. Focus is given to antibacterial therapy as well as the all-in-one detection and treatment of bacterial infections. Notably, we highlight progress in the use of nanoparticles with intrinsic antibacterial performances, such as metals and metal oxide nanoparticles that are capable of killing bacteria and reducing the drug-resistance of bacteria through multiple antimicrobial mechanisms. In addition, we discuss nanomaterials that have been proven to be ideal drug carriers for the delivery and release of antimicrobials either in passive or in stimuli-responsive manners. Focus is given to nanomaterials with the ability to kill bacteria based on the photo-triggered heat (photothermal therapy) or ROS (photodynamic therapy), due to their unparalleled advantages in infection control. Moreover, we highlight examples of intelligent nanomaterial-based wound dressings that can detect bacterial infections in-situ while providing timely antibacterial therapy for enhanced management of infected wounds. Finally, we highlight challenges associated with the current nanomaterial-based wound dressings and provide further perspectives for future improvement of wound healing.
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4
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Liu Y, Su G, Zhang R, Dai R, Li Z. Nanomaterials-Functionalized Hydrogels for the Treatment of Cutaneous Wounds. Int J Mol Sci 2022; 24:336. [PMID: 36613778 PMCID: PMC9820076 DOI: 10.3390/ijms24010336] [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: 11/22/2022] [Revised: 12/17/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Hydrogels have been utilized extensively in the field of cutaneous wound treatment. The introduction of nanomaterials (NMs), which are a big category of materials with diverse functionalities, can endow the hydrogels with additional and multiple functions to meet the demand for a comprehensive performance in wound dressings. Therefore, NMs-functionalized hydrogels (NMFHs) as wound dressings have drawn intensive attention recently. Herein, an overview of reports about NMFHs for the treatment of cutaneous wounds in the past five years is provided. Firstly, fabrication strategies, which are mainly divided into physical embedding and chemical synthesis of the NMFHs, are summarized and illustrated. Then, functions of the NMFHs brought by the NMs are reviewed, including hemostasis, antimicrobial activity, conductivity, regulation of reactive oxygen species (ROS) level, and stimulus responsiveness (pH responsiveness, photo-responsiveness, and magnetic responsiveness). Finally, current challenges and future perspectives in this field are discussed with the hope of inspiring additional ideas.
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Affiliation(s)
- Yangkun Liu
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Gongmeiyue Su
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Ruoyao Zhang
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Rongji Dai
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
- School of Life Science, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
| | - Zhao Li
- Institute of Engineering Medicine, School of Medical Technology, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
- Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian District, Beijing 100081, China
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Mehta K, Kumar V, Rai B, Kumar R, Kumar G. Development of cost effective, breathable & biocompatible nanosilver impregnated, acrylic acid grafted non-woven polypropylene (NWPP) wound dressing material with long lasting antimicrobial efficacy. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03001-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Girija AR, Balasubramanian S, Cowin AJ. Nanomaterials-based drug delivery approaches for wound healing. Curr Pharm Des 2022; 28:711-726. [DOI: 10.2174/1381612828666220328121211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/11/2022] [Indexed: 11/22/2022]
Abstract
Abstract:
Wound healing is a complex and dynamic process that requires intricate synchronization between multiple cell types within appropriate extracellular microenvironment. Wound healing process involves four overlapping phases in a precisely regulated manner, consisting of hemostasis, inflammation, proliferation, and maturation. For an effective wound healing all four phases must follow in a sequential pattern within a time frame. Several factors might interfere with one or more of these phases in healing process, thus causing improper or impaired wound healing resulting in non-healing chronic wounds. The complications associated with chronic non-healing wounds, along with the limitations of existing wound therapies, have led to the development and emergence of novel and innovative therapeutic interventions. Nanotechnology presents unique and alternative approaches to accelerate the healing of chronic wounds by the interaction of nanomaterials during different phases of wound healing. This review focuses on recent innovative nanotechnology-based strategies for wound healing and tissue regeneration based on nanomaterials, including nanoparticles, nanocomposites and scaffolds. The efficacy of the intrinsic therapeutic potential of nanomaterials (including silver, gold, zinc oxide, copper, cerium oxide, etc.) and the ability of nanomaterials as carriers (liposomes, hydrogels, polymeric nanomaterials, nanofibers) as therapeutic agents associated with wound-healing applications have also been addressed. The significance of these nanomaterial-based therapeutic interventions for wound healing needs to be highlighted to engage researchers and clinicians towards this new and exciting area of bio-nanoscience. We believe that these recent developments will offer researchers an updated source on the use of nanomaterials as an advanced approach to improve wound healing.
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Berini F, Orlandi V, Gornati R, Bernardini G, Marinelli F. Nanoantibiotics to fight multidrug resistant infections by Gram-positive bacteria: hope or reality? Biotechnol Adv 2022; 57:107948. [PMID: 35337933 DOI: 10.1016/j.biotechadv.2022.107948] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 03/15/2022] [Accepted: 03/17/2022] [Indexed: 12/17/2022]
Abstract
The spread of antimicrobial resistance in Gram-positive pathogens represents a threat to human health. To counteract the current lack of novel antibiotics, alternative antibacterial treatments have been increasingly investigated. This review covers the last decade's developments in using nanoparticles as carriers for the two classes of frontline antibiotics active on multidrug-resistant Gram-positive pathogens, i.e., glycopeptide antibiotics and daptomycin. Most of the reviewed papers deal with vancomycin nanoformulations, being teicoplanin- and daptomycin-carrying nanosystems much less investigated. Special attention is addressed to nanoantibiotics used for contrasting biofilm-associated infections. The status of the art related to nanoantibiotic toxicity is critically reviewed.
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Affiliation(s)
- Francesca Berini
- Department of Biotechnology and Life Sciences, University of Insubria, via JH Dunant 3, 21100 Varese, Italy.
| | - Viviana Orlandi
- Department of Biotechnology and Life Sciences, University of Insubria, via JH Dunant 3, 21100 Varese, Italy.
| | - Rosalba Gornati
- Department of Biotechnology and Life Sciences, University of Insubria, via JH Dunant 3, 21100 Varese, Italy.
| | - Giovanni Bernardini
- Department of Biotechnology and Life Sciences, University of Insubria, via JH Dunant 3, 21100 Varese, Italy.
| | - Flavia Marinelli
- Department of Biotechnology and Life Sciences, University of Insubria, via JH Dunant 3, 21100 Varese, Italy.
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8
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Nanomaterial-Based Therapy for Wound Healing. NANOMATERIALS 2022; 12:nano12040618. [PMID: 35214947 PMCID: PMC8878029 DOI: 10.3390/nano12040618] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 02/06/2023]
Abstract
Poor wound healing affects millions of people globally, resulting in increased mortality rates and associated expenses. The three major complications associated with wounds are: (i) the lack of an appropriate environment to enable the cell migration, proliferation, and angiogenesis; (ii) the microbial infection; (iii) unstable and protracted inflammation. Unfortunately, existing therapeutic methods have not solved these primary problems completely, and, thus, they have an inadequate medical accomplishment. Over the years, the integration of the remarkable properties of nanomaterials into wound healing has produced significant results. Nanomaterials can stimulate numerous cellular and molecular processes that aid in the wound microenvironment via antimicrobial, anti-inflammatory, and angiogenic effects, possibly changing the milieu from nonhealing to healing. The present article highlights the mechanism and pathophysiology of wound healing. Further, it discusses the current findings concerning the prospects and challenges of nanomaterial usage in the management of chronic wounds.
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Kumar A, Sood A, Han SS. Poly (vinyl alcohol)-alginate as potential matrix for various applications: A focused review. Carbohydr Polym 2022; 277:118881. [PMID: 34893284 DOI: 10.1016/j.carbpol.2021.118881] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/23/2021] [Accepted: 11/08/2021] [Indexed: 02/08/2023]
Abstract
Advances in polymers have made significant contribution in diverse application oriented fields. Multidisciplinary applicability of polymers generates a range of strategies, which is pertinent in a wide range of fields. Blends of natural and synthetic polymers have spawned a different class of materials with synergistic effects. Specifically, poly (vinyl alcohol) (PVA) and alginate (AG) blends (PVAG) have demonstrated some promising results in almost every segment, ranging from biomedical to industrial sector. Combination of PVAG with other materials, immobilization with specific moieties and physical and chemical crosslinking could result in amendments in the structure and properties of the PVAG matrices. Here, we provide an overview of the recent developments in designing PVAG based matrix and complexes with their structural and functional properties. The article also provides a comprehensive outline on the applicability of PVAG matrix in wastewater treatment, biomedical, photocatalysis, food packaging, and fuel cells and sheds light on the challenges that need to be addressed. Finally, the review elaborates the future prospective of PVAG matrices in other unexplored fields like aircraft industry, nuclear science and space exploration.
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Affiliation(s)
- Anuj Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea; Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea.
| | - Ankur Sood
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea; Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan 38541, Republic of Korea.
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Demir GC, Erdemli Ö, Keskin D, Tezcaner A. Xanthan-gelatin and xanthan-gelatin-keratin wound dressings for local delivery of Vitamin C. Int J Pharm 2021; 614:121436. [PMID: 34974152 DOI: 10.1016/j.ijpharm.2021.121436] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/21/2021] [Accepted: 12/26/2021] [Indexed: 01/17/2023]
Abstract
Recently, functional dressings that can protect the wound area from dehydration and bacterial infection and support healing have gained importance in place of passive dressings. This study aimed to develop temporary and regenerative xanthan/gelatin (XGH) and keratin/xanthan/gelatin hydrogels (KXGHs) that have high absorption capacity and applicability as a wound dressing that can provide local delivery of Vitamin C (VC). Firstly, xanthan/gelatin hydrogels were produced by crosslinking with different glycerol concentrations and characterized to determine the hydrogel composition. According to their weight ratios, xanthan, gelatin, and glycerol hydrogels are named. If their weight ratio is 1:1:2 (w/w/w), the group name is selected as X1:GEL1:GLY2. X1:GEL1:GLY2 hydrogel was selected for biocompatibility, mechanical property, water vapor transmission rate (WVTR), and porosity. The addition of keratin to X1:GEL1:GLY2 improved L929 fibroblasts viability and increased protein release. Water vapor transmission of XGHs and KXGHs was between 3059.09 ± 126 and 4523 ± 133 g m-2 d-1; therefore, they can be suitable for granulating, low to moderate exudate wounds. XGH and KXGHs loaded with VC had higher water uptake, making it more convenient for exudate wounds. VC was released for 100 h, and VC containing XGHs and KXGHs increased the collagen synthesis of L929 fibroblasts. All of the hydrogels (XGH, KXGH, and VC-KXGHs) inhibited the bacteria transmission. In conclusion, our results suggest that VC-XGH and VC-KXGH can be candidates for temporary wound dressing materials for skin wounds.
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Affiliation(s)
- Gizem Cigdem Demir
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey
| | - Özge Erdemli
- Department of Molecular Biology and Genetics, Başkent University, Turkey
| | - Dilek Keskin
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Turkey; BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering Research Center, Middle East Technical University, Turkey
| | - Ayşen Tezcaner
- Department of Biotechnology, Middle East Technical University, Ankara 06800, Turkey; Department of Engineering Sciences, Middle East Technical University, Turkey; BIOMATEN, Center of Excellence in Biomaterials and Tissue Engineering Research Center, Middle East Technical University, Turkey.
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Tanveer S, Ahmad M, Minhas MU, Ahmad A, Khan KU. Chitosan-PVA-co-poly (2-Acrylamido-2-Methylpropane Sulfonic Acid) Cross-linked Hybrid IPN-Nanogels for Transdermal Delivery of Ondansetron; Synthesis, Characterization and Toxicological Evaluation. POLYM-PLAST TECH MAT 2021. [DOI: 10.1080/25740881.2021.1934019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sana Tanveer
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Khawaja Fareed Campus, Punjab, Pakistan
| | - Mahmood Ahmad
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Khawaja Fareed Campus, Punjab, Pakistan
| | | | - Aousaf Ahmad
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Khawaja Fareed Campus, Punjab, Pakistan
| | - Kifayat Ullah Khan
- Department of Pharmaceutics, Faculty of Pharmacy, The Islamia University of Bahawalpur, Khawaja Fareed Campus, Punjab, Pakistan
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Hu C, Lu W, Mata A, Nishinari K, Fang Y. Ions-induced gelation of alginate: Mechanisms and applications. Int J Biol Macromol 2021; 177:578-588. [PMID: 33617905 DOI: 10.1016/j.ijbiomac.2021.02.086] [Citation(s) in RCA: 131] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/05/2021] [Accepted: 02/12/2021] [Indexed: 01/16/2023]
Abstract
Alginate is an important natural biopolymer and has been widely used in the food, biomedical, and chemical industries. Ca2+-induced gelation is one of the most important functional properties of alginate. The gelation mechanism is well-known as egg-box model, which has been intensively studied in the last five decades. Alginate also forms gels with many other monovalent, divalent or trivalent cations, and their gelation can possess different mechanisms from that of Ca2+-induced gelation. The resulted gels also exhibit different properties that lead to various applications. This study is proposed to summarize the gelation mechanisms of alginate induced by different cations, mainly including H+, Ca2+, Ba2+, Cu2+, Sr2+, Zn2+, Fe2+, Mn2+, Al3+, and Fe3+. The mechanism of H+-induced gelation of alginate mainly depends on the protonation of carboxyl groups. Divalent ions-induced gelation of alginate show different selection towards G, M, and GM blocks. Trivalent ions can bind to carboxyl groups of uronates with no selection. The properties and applications of these ionotropic alginate gels are also discussed. The knowledge gained in this study would provide useful information for the practical applications of alginate.
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Affiliation(s)
- Chuhuan Hu
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Wei Lu
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Analucia Mata
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Katsuyoshi Nishinari
- Glyn O. Phillips Hydrocolloid Research Centre, School of Food and Biological Engineering, Hubei University of Technology, Wuhan 430068, China
| | - Yapeng Fang
- Department of Food Science and Engineering, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
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13
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Wang Y, Shi Z, Sun Y, Wu X, Li S, Dong S, Lan T. Preparation of amphiphilic magnetic polyvinyl alcohol targeted drug carrier and drug delivery research. Des Monomers Polym 2020; 23:197-206. [PMID: 33177950 PMCID: PMC7594732 DOI: 10.1080/15685551.2020.1837442] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Currently, magnetic applications have great potential for development in the field of drug carriers. In this paper, Fe3O4-PVA@SH, an amphiphilic magnetically targeting drug carrier, was prepared by using Fe3O4 and PVA with thiohydrazide-iminopropyltriethoxysilane(TIPTS). The loading capacity of Fe3O4-PVA@SH on Aspirin and the drug release kinetics of loaded drugs were studied. The obtained Fe3O4-PVA@SH exhibits excellent drug release properties in simulating the human body fluid environment (pH 7.2). Since magnetically targeting drug carriers are readily available and have excellent biocompatibility and the characteristics of drug release. This work’s development, preparing amphiphilic magnetically targeting drug carriers in drug delivery and other fields, has great significance.
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Affiliation(s)
- Yazhen Wang
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China.,College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, China
| | - Zhen Shi
- College of Materials Science and Engineering, Qiqihar University, Qiqihar, China.,Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Yu Sun
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Xueying Wu
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shuang Li
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Shaobo Dong
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
| | - Tianyu Lan
- Heilongjiang Provincial Key Laboratory of Polymeric Composite Materials, Qiqihar, China
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14
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Xu C, Akakuru OU, Ma X, Zheng J, Zheng J, Wu A. Nanoparticle-Based Wound Dressing: Recent Progress in the Detection and Therapy of Bacterial Infections. Bioconjug Chem 2020; 31:1708-1723. [PMID: 32538089 DOI: 10.1021/acs.bioconjchem.0c00297] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Bacterial infections in wounds often delay the healing process, and may seriously threaten human life. It is urgent to develop wound dressings to effectively detect and treat bacterial infections. Nanoparticles have been extensively used in wound dressings because of their specific properties. This review highlights the recent progress on nanoparticle-based wound dressings for bacterial detection and therapy. Specifically, nanoparticles have been applied as intrinsic antibacterial agents or drug delivery vehicles to treat bacteria in wounds. Moreover, nanoparticles with photothermal or photodynamic property have also been explored to endow wound dressings with significant optical properties to further enhance their bactericidal effect. More interestingly, nanoparticle-based smart dressings have been recently explored for bacteria detection and treatment, which enables an accurate assessment of bacterial infection and a more precise control of on-demand therapy.
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Affiliation(s)
- Chen Xu
- Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, the People's Republic of China.,Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices & Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, the People's Republic of China.,Ningbo Institute of Life and Health Industry, University of Chinese Academy of Sciences, Ningbo 315000, the People's Republic of China
| | - Ozioma Udochukwu Akakuru
- Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices & Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, the People's Republic of China
| | - Xuehua Ma
- Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices & Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, the People's Republic of China
| | - Jianping Zheng
- Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices & Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, the People's Republic of China
| | - Jianjun Zheng
- Hwa Mei Hospital, University of Chinese Academy of Sciences, Ningbo 315010, the People's Republic of China
| | - Aiguo Wu
- Cixi Institute of Biomedical Engineering, Chinese Academy of Sciences (CAS) Key Laboratory of Magnetic Materials and Devices & Zhejiang Engineering Research Center for Biomedical Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, the People's Republic of China
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15
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Smith R, Russo J, Fiegel J, Brogden N. Antibiotic Delivery Strategies to Treat Skin Infections When Innate Antimicrobial Defense Fails. Antibiotics (Basel) 2020; 9:E56. [PMID: 32024064 PMCID: PMC7168299 DOI: 10.3390/antibiotics9020056] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/26/2020] [Accepted: 01/28/2020] [Indexed: 12/14/2022] Open
Abstract
The epidermal skin barrier protects the body from a host of daily challenges, providing protection against mechanical insults and the absorption of chemicals and xenobiotics. In addition to the physical barrier, the epidermis also presents an innate defense against microbial overgrowth. This is achieved through the presence of a diverse collection of microorganisms on the skin (the "microbiota") that maintain a delicate balance with the host and play a significant role in overall human health. When the skin is wounded, the local tissue with a compromised barrier can become colonized and ultimately infected if bacterial growth overcomes the host response. Wound infections present an immense burden in healthcare costs and decreased quality of life for patients, and treatment becomes increasingly important because of the negative impact that infection has on slowing the rate of wound healing. In this review, we discuss specific challenges of treating wound infections and the advances in drug delivery platforms and formulations that are under development to improve topical delivery of antimicrobial treatments.
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Affiliation(s)
- R. Smith
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242, USA; (R.S.); (J.F.)
| | - J. Russo
- Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, Iowa City, IA 52242, USA;
| | - J. Fiegel
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242, USA; (R.S.); (J.F.)
- Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, Iowa City, IA 52242, USA;
| | - N. Brogden
- Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, Iowa City, IA 52242, USA;
- Department of Dermatology, The University of Iowa, Iowa City, IA 52242, USA
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16
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Amparo TR, Seibert JB, Vieira PMDA, Teixeira LFM, Santos ODHD, de Souza GHB. Herbal medicines to the treatment of skin and soft tissue infections: advantages of the multi-targets action. Phytother Res 2019; 34:94-103. [PMID: 31713305 DOI: 10.1002/ptr.6519] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 08/27/2019] [Accepted: 09/10/2019] [Indexed: 12/19/2022]
Abstract
The research for new treatments of skin and soft tissue infections (SSTIs) is important due to their high prevalence and number of hospitalizations. The purpose of this review is to address the pathophysiology of SSTIs to highlight the advantages of herbal medicines to their treatment, showing examples of species and compounds with multi-targets action. SSTIs have a complex physiopathology involving the microorganism, as well as inflammation and difficult healing. Therefore, antimicrobial, anti-inflammatory, antioxidant and healing activities are an approach possible for their treatment. Herbal medicines have a wide diversity of biological compounds, mainly phenolic compounds that may act on different targets and also have synergism between them. Therefore, a single medicine may have the four key activities that allied allow eliminating the infection, control the inflammation process and accelerating the healing process, preventing complications with chronic infections.
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Affiliation(s)
- Tatiane Roquete Amparo
- Programa de Pós graduação em Ciências Farmacêuticas, CIPHARMA, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Janaína Brandão Seibert
- Programa de Pós Graduação em Biotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Paula Melo de Abreu Vieira
- Programa de Pós Graduação em Biotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.,Programa de Pós Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Luiz Fernando Medeiros Teixeira
- Programa de Pós graduação em Ciências Farmacêuticas, CIPHARMA, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Orlando David Henrique Dos Santos
- Programa de Pós graduação em Ciências Farmacêuticas, CIPHARMA, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.,Programa de Pós Graduação em Biotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Gustavo Henrique Bianco de Souza
- Programa de Pós graduação em Ciências Farmacêuticas, CIPHARMA, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil.,Programa de Pós Graduação em Biotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
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17
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Anthocyanin-Loaded Liposomes Prepared by the pH-Gradient Loading Method to Enhance the Anthocyanin Stability, Antioxidation Effect and Skin Permeability. Macromol Res 2019. [DOI: 10.1007/s13233-020-8039-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Chen S, Hu J, Shi J, Wang M, Guo Y, Li M, Duo J, Deng T. Composite hydrogel particles encapsulated ammonium molybdophosphate for efficiently cesium selective removal and enrichment from wastewater. JOURNAL OF HAZARDOUS MATERIALS 2019; 371:694-704. [PMID: 30897489 DOI: 10.1016/j.jhazmat.2019.03.047] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 03/04/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
A novel ammonium molybdophosphate (AMP)/ polyvinyl alcohol (PVA)/ sodium alginate (SA) composite hydrogel (APS) was prepared for Cs+ removal and enrichment from radioactive wastewater. Batch experiments with the subject of AMP concentration, pH value, initial Cs+ concentration, contact time, temperature, competing ions were investigated. The results showed this APS hydrogel with high permeability and stability could effectively adsorb Cs+ at widely broad pH value range and low Cs+ concentration within a short time. Adsorption thermodynamic parameters indicated the endothermic and spontaneous nature of the adsorption process, and the Lagergren pseudo-second order model was found to exhibit the best correlation with the adsorption results. Equilibrium data was better described by the Langmuir isotherm equation, and the maximum adsorption capacity of APS hydrogel calculated was in consistent with the experimental results. Furthermore, the APS hydrogel could be easily reused at least five times without obvious decrease in absorption activity and selectivity using ammonia nitrate as the eluent, and what's more, the Cs+ concentration in eluent was approximately concentrated for 2 times after single cycle. All the results suggest that the environmental friendly and low-cost APS hydrogel could be used as effective and selective material for Cs+ removal and enrichment from wastewater.
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Affiliation(s)
- Shangqing Chen
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Jiayin Hu
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China.
| | - Jian Shi
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Mengxue Wang
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Yafei Guo
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China
| | - Mingli Li
- Central Laboratory of Tibet Autonomous Region Bureau of Geological & Mineral Resources, Tibet, 850033, China
| | - Ji Duo
- Central Laboratory of Tibet Autonomous Region Bureau of Geological & Mineral Resources, Tibet, 850033, China
| | - Tianlong Deng
- Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemical Engineering and Materials Science, Tianjin University of Science and Technology, Tianjin, 300457, China.
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19
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Jain NK, R. S. P, Bavya MC, Prasad R, Bandyopadhyaya R, Naidu VGM, Srivastava R. Niclosamide encapsulated polymeric nanocarriers for targeted cancer therapy. RSC Adv 2019; 9:26572-26581. [PMID: 35528602 PMCID: PMC9070431 DOI: 10.1039/c9ra03407b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/14/2019] [Indexed: 11/24/2022] Open
Abstract
Localized cancer rates are on an upsurge, severely affecting mankind across the globe. Timely diagnosis and adopting appropriate treatment strategies could improve the quality of life significantly reducing the mortality and morbidity rates. Recently, nanotherapeutics has precipitously shown increased efficacy for controlling abnormal tissue growth in certain sites in the body, among which ligand functionalized nanoparticles (NP) have caught much attention for improved survival statistics via active targeting. Our focus was to repurpose the antihelminthic drug, niclosamide (NIC), which could aid in inhibiting the abnormal growth of cells restricted to a specific region. The work here presents a one-pot synthesis of niclosamide encapsulated, hyaluronic acid functionalized core–shell nanocarriers [(NIC-PLGA NP)HA] for active targeting of localized cancer. The synthesized nanocarriers were found to possess spherical morphology with mean size of 150.8 ± 9 nm and zeta potential of −24.9 ± 7.21 mV. The encapsulation efficiency was found to be 79.19 ± 0.16% with a loading efficiency of 7.19 ± 0.01%. The nanohybrids exhibited extreme cytocompatibility upon testing with MDA-MB-231 and L929 cell lines. The rate of cancer cell elimination was approximately 85% with targeted cell imaging results being highly convincing. [(NIC-PLGA NP)HA] demonstrates increased cellular uptake leading to a hike in reactive oxygen species (ROS) generation, combating tumour cells aiding in the localized treatment of cancer and associated therapy. Localized binding of nanoparticulate formulation, actively targeting the receptors present on the cell surface.![]()
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Affiliation(s)
- Nishant Kumar Jain
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
| | - Prabhuraj R. S.
- Centre for Research in Nanotechnology and Science
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
| | - M. C. Bavya
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
| | - Rajendra Prasad
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
| | - Rajdip Bandyopadhyaya
- Department of Chemical Engineering
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
| | - V. G. M. Naidu
- Department of Pharmacology & Toxicology
- National Institute of Pharmaceutical Education and Research (NIPER)
- Guwahati
- India
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering
- Indian Institute of Technology Bombay (IIT-B)
- Mumbai
- India
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20
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Severino P, da Silva CF, Andrade LN, de Lima Oliveira D, Campos J, Souto EB. Alginate Nanoparticles for Drug Delivery and Targeting. Curr Pharm Des 2019; 25:1312-1334. [PMID: 31465282 DOI: 10.2174/1381612825666190425163424] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/15/2019] [Indexed: 12/31/2022]
Abstract
Nanotechnology refers to the control, manipulation, study and manufacture of structures and devices at the nanometer size range. The small size, customized surface, improved solubility and multi-functionality of nanoparticles will continue to create new biomedical applications, as nanoparticles allow to dominate stability, solubility and bioavailability, as well controlled release of drugs. The type of a nanoparticle, and its related chemical, physical and morphological properties influence its interaction with living cells, as well as determine the route of clearance and possible toxic effects. This field requires cross-disciplinary research and gives opportunities to design and develop multifunctional devices, which allow the diagnosis and treatment of devastating diseases. Over the past few decades, biodegradable polymers have been studied for the fabrication of drug delivery systems. There was extensive development of biodegradable polymeric nanoparticles for drug delivery and tissue engineering, in view of their applications in controlling the release of drugs, stabilizing labile molecules from degradation and site-specific drug targeting. The primary aim is to reduce dosing frequency and prolong the therapeutic outcomes. For this purpose, inert excipients should be selected, being biopolymers, e.g. sodium alginate, commonly used in controlled drug delivery. Nanoparticles composed of alginate (known as anionic polysaccharide widely distributed in the cell walls of brown algae which, when in contact with water, forms a viscous gum) have emerged as one of the most extensively characterized biomaterials used for drug delivery and targeting a set of administration routes. Their advantages include not only the versatile physicochemical properties, which allow chemical modifications for site-specific targeting but also their biocompatibility and biodegradation profiles, as well as mucoadhesiveness. Furthermore, mechanical strength, gelation, and cell affinity can be modulated by combining alginate nanoparticles with other polymers, surface tailoring using specific targeting moieties and by chemical or physical cross-linking. However, for every physicochemical modification in the macromolecule/ nanoparticles, a new toxicological profile may be obtained. In this paper, the different aspects related to the use of alginate nanoparticles for drug delivery and targeting have been revised, as well as how their toxicological profile will determine the therapeutic outcome of the drug delivery system.
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Affiliation(s)
- Patricia Severino
- Universidade Tiradentes (Unit), Av. Murilo Dantas, 300, Farolandia, Aracaju-SE, CEP 49.032-490, Brazil
- Instituto de Tecnologia e Pesquisa, Laboratório de Nanotecnologia e Nanomedicina (LNMed) Av. Murilo Dantas, 300, Aracaju - SE, CEP 49.032-490, Brazil
| | - Classius F da Silva
- Universidade Federal de Sao Paulo, Instituto de Ciências Ambientais, Quimicas e Farmaceuticas, Departamento de Engenharia Quimica, Rua Sao Nicolau, 210, Diadema - SP, CEP 09.913-030, Brazil
| | - Luciana N Andrade
- Universidade Tiradentes (Unit), Av. Murilo Dantas, 300, Farolandia, Aracaju-SE, CEP 49.032-490, Brazil
- Instituto de Tecnologia e Pesquisa, Laboratório de Nanotecnologia e Nanomedicina (LNMed) Av. Murilo Dantas, 300, Aracaju - SE, CEP 49.032-490, Brazil
| | - Daniele de Lima Oliveira
- Universidade Tiradentes (Unit), Av. Murilo Dantas, 300, Farolandia, Aracaju-SE, CEP 49.032-490, Brazil
- Instituto de Tecnologia e Pesquisa, Laboratório de Nanotecnologia e Nanomedicina (LNMed) Av. Murilo Dantas, 300, Aracaju - SE, CEP 49.032-490, Brazil
| | - Joana Campos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Polo das Ciencias da Saude, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Polo das Ciencias da Saude, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar 4710-057 Braga, Portugal
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21
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22
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Song B. Lotus leaf-inspired design of calcium alginate particles with superhigh drug encapsulation efficiency and pH responsive release. Colloids Surf B Biointerfaces 2018; 172:464-470. [PMID: 30199763 DOI: 10.1016/j.colsurfb.2018.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/31/2018] [Accepted: 09/01/2018] [Indexed: 10/28/2022]
Abstract
Drug delivery systems with high drug encapsulation efficiency and controlled release are of great importance in biomedical fields. Herein, we report an ingenious approach inspired from the lotus leaf possessing the ability of strong repellency to water, which enables the rapid fabrication of drug-loaded calcium alginate (Ca-Alg) particles with high drug encapsulation efficiency and controlled drug delivery. The design is achieved by introducing aqueous droplets containing the mixture of dilute sodium alginate solution, dilute calcium chloride solution, and drug onto the superhydrophobic substrate. Due to water evaporation both the concentration of sodium alginate and calcium chloride within the droplets will gradually increase, and the ionic crosslinking reaction of sodium alginate with Ca2+ is further occurred to form the drug-embedded Ca-Alg hydrogel particles. The results indicate that the controllable fabrication of Ca-Alg particles can be easily achieved on the superhydrophobic surface, and the swelling behavior can be tuned by the pH of the buffer solution. Importantly, the drug encapsulation efficiencies are measured to be over 88% and the drug exhibits obvious pH responsive release. Findings from this study are expected to contribute to the rational design of drug delivery systems with high drug encapsulation efficiency and controlled release for pharmaceutic science and tissue engineering.
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Affiliation(s)
- Botao Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, Shaanxi, People's Republic of China.
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23
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Bavya MC, Vimal Rohan K, Gaurav GB, Srivasatava R. Synergistic treatment strategies to combat resistant bacterial infections using Schiff base modified nanoparticulate - hydrogel system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 95:226-235. [PMID: 30573245 DOI: 10.1016/j.msec.2018.10.080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 10/04/2018] [Accepted: 10/23/2018] [Indexed: 01/22/2023]
Abstract
Antibiotic resistance is of much prevalence and is one of the alarming realities for the rise in morbidity and mortality. Antibiotics; once regarded as wonder drugs have lost its credit of combating bacteria due to the rapid rise in variety of nosocomial pathogens. The underlying cause for the resistance spread is due to sudden drift in genetic mutation and the recalcitrant behavior of bacterial species. On the other hand, illegal and overconsumption of drugs fuels up the issue, wherein resistance development is directly proportional to the rate of drug consumption. Our pursuit was in reviving antibiotic, and further repurposing them into more potent formulation with reduced side effects to completely deplete resistant bacteria. In this work we present gentamicin encapsulated zein nanoparticle modified with Schiff base incorporated in immobilized chitosan-polyvinyl alcohol gel matrix([GM-ZNP]PG CsPVA) resulting in synergistic antibacterial activity. Schiff base modified zein nanoparticle exhibited an average diameter of 240 ± 8 nm and stability of -29.85 ± 2 mV. The nanocomposite system exhibited enhanced penetration rate when applied to dermis eliciting combinatorial antibacterial activity. Gentamicin in combination with Schiff base was found to lyse bacteria by ruining its cell integrity as depicted by SEM analysis. The formulation upon application stays intact to the impaired dermal tissues and releases drug in a sustained manner without the need of recurrent administration. The gel system was extremely biocompatible towards L929 cells without any toxicity. Overall, the work reports use of [GM-ZNP]PG CsPVA for resistant bacterial infections.
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Affiliation(s)
- M C Bavya
- Nanobios Lab, Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - K Vimal Rohan
- Academy of Medical Sciences, Pariyaram, Kerala 670503, India
| | - G B Gaurav
- Nanobios Lab, Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - R Srivasatava
- Nanobios Lab, Department of Bioscience and Bioengineering, Indian Institute of Technology Bombay, Mumbai 400076, India.
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