1
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Seon S, Li Y, Lee S, Jeon YS, Kang DS, Ryu DJ. Self-Assembled PLGA-Pluronic F127 Microsphere for Sustained Drug Release for Osteoarthritis. Pharmaceuticals (Basel) 2024; 17:471. [PMID: 38675430 PMCID: PMC11054183 DOI: 10.3390/ph17040471] [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: 03/09/2024] [Revised: 03/25/2024] [Accepted: 04/03/2024] [Indexed: 04/28/2024] Open
Abstract
For many years, sustained-release drug delivery systems (SRDDS) have emerged as a featured topic in the pharmaceutical field. Particularly for chronic diseases, such as osteoarthritis, there is a lot of demand for SRDDS because of the long treatment period and repetitive medication administration. Thus, we developed an injectable PLGA-F127 microsphere (MS) that is capable of the in situ conversion to an implant. The microprecipitation method for PLGA-F127 MS was established, and the physicochemical stability of the products was confirmed. The microspheres were assembled into a single mass in 37 °C aqueous conditions and showed a remarkably delayed drug release profile. First, the release started with no significant initial burst and lagged for 60 days. After that, in the next 40 days, the remaining 75% of the drugs were constantly released until day 105. We expect that our PLGA-F127 MS could be employed to extend the release period of 2 months of medication to 4 months. This could be a valuable solution for developing novel SRDDS for local injections.
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Affiliation(s)
- Semee Seon
- Research & Development, Nextbiomedical Co., Ltd., Incheon 22013, Republic of Korea
| | - Yixian Li
- Research & Development, Nextbiomedical Co., Ltd., Incheon 22013, Republic of Korea
| | - Sangah Lee
- Research & Development, Nextbiomedical Co., Ltd., Incheon 22013, Republic of Korea
| | - Yoon Sang Jeon
- Orthopedic Surgery, Inha University Hospital, Incheon 22013, Republic of Korea
| | - Dong Seok Kang
- Orthopedic Surgery, Inha University Hospital, Incheon 22013, Republic of Korea
| | - Dong Jin Ryu
- Orthopedic Surgery, Inha University Hospital, Incheon 22013, Republic of Korea
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2
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Amante C, Falcone G, Aquino RP, Russo P, Nicolais L, Del Gaudio P. In Situ Hydrogel Formulation for Advanced Wound Dressing: Influence of Co-Solvents and Functional Excipient on Tailored Alginate-Pectin-Chitosan Blend Gelation Kinetics, Adhesiveness, and Performance. Gels 2023; 10:3. [PMID: 38275841 PMCID: PMC10815700 DOI: 10.3390/gels10010003] [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: 12/01/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Chronic skin wounds affect more than 40 million patients worldwide, representing a huge problem for healthcare systems. This study elucidates the optimization of an in situ gelling polymer blend powder for biomedical applications through the use of co-solvents and functional excipients, underlining the possibility of tailoring microparticulate powder properties to generate, in situ, hydrogels with advanced properties that are able to improve wound management and patient well-being. The blend was composed of alginate, pectin, and chitosan (APC). Various co-solvents (ethanol, isopropanol, and acetone), and salt excipients (sodium bicarbonate and ammonium carbonate) were used to modulate the gelation kinetics, rheology, adhesiveness, and water vapor transmission rate of the gels. The use of co-solvents significantly influenced particle size (mean diameter ranging from 2.91 to 5.05 µm), depending on the solvent removal rate. Hydrogels obtained using ethanol were able to absorb over 15 times their weight in simulated wound fluid within just 5 min, whereas when sodium bicarbonate was used, complete gelation was achieved in less than 30 s. Such improvement was related to the internal microporous network typical of the particle matrix obtained with the use of co-solvents, whereas sodium bicarbonate was able to promote the formation of allowed particles. Specific formulations demonstrated an optimal water vapor transmission rate, enhanced viscoelastic properties, gel stiffness, and adhesiveness (7.7 to 9.9 kPa), facilitating an atraumatic removal post-use with minimized risk of unintended removal. Microscopic analysis unveiled that porous inner structures were influencing fluid uptake, gel formation, and transpiration. In summary, this study provided valuable insights for optimizing tailored APC hydrogels as advanced wound dressings for chronic wounds, including vascular ulcers, pressure ulcers, and partial and full-thickness wounds, characterized by a high production of exudate.
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Affiliation(s)
- Chiara Amante
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy (G.F.); (R.P.A.); (P.R.)
| | - Giovanni Falcone
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy (G.F.); (R.P.A.); (P.R.)
| | - Rita P. Aquino
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy (G.F.); (R.P.A.); (P.R.)
| | - Paola Russo
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy (G.F.); (R.P.A.); (P.R.)
| | - Luigi Nicolais
- Materias s.r.l., University of Naples “Federico II” Campus San Giovanni a Teduccio, 84146 Naples, Italy
| | - Pasquale Del Gaudio
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy (G.F.); (R.P.A.); (P.R.)
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
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3
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Smith R, Ruben C, Pradhan O, Brogden N, Fiegel J. Spray coverage analysis of topical sprays formed by cold thermoreversible hydrogels. Drug Dev Ind Pharm 2023; 49:456-466. [PMID: 37354008 PMCID: PMC11172404 DOI: 10.1080/03639045.2023.2229919] [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: 03/11/2023] [Accepted: 06/21/2023] [Indexed: 06/25/2023]
Abstract
OBJECTIVE Sprayable hydrogel formulations are promising topical treatments for skin wounds due to their ability to reduce application pain, prolong drug release, and provide moisture to promote skin healing. These viscoelastic materials, however, present challenges in spray ability which can be overcome using a thermoreversible hydrogels sprayed as lower viscosity liquids at cooler temperatures. The purpose of this research was to evaluate the impact of thermoreversible hydrogel formulation and device characteristics on topical spray patterns and to develop metrics to accurately describe surface coverage. METHODS Cold solutions of Pluronic F127 were prepared at 15, 17, and 20% (w/w) and tested to determine their rheological properties. Formulations were sprayed from hand-held atomizing pump dispersers under cold conditions and two distinct areas of their spray patterns analyzed: the concentrated core and the full spray pattern. Traditional analysis of spray patterns was conducted to determine major and minor axes, ovality, and total area. In addition, new scripts were developed to evaluate the concentrated core. RESULTS The full spray pattern analysis quantified the total area over which the spray would extend a flat surface, while the concentrated core analysis quantified the continuous region where a drug dose would be concentrated. The combination of formulation viscosity, sprayer nozzle, and spray distance produced spray patterns from highly concentrated to highly dispersed. These parameters can be controlled to generate desired hydrogel spray patterns for application on skin surfaces. CONCLUSION The developed metrics provide a basis for topical spray analysis that can inform future product performance.
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Affiliation(s)
- Riannon Smith
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242
| | - Chris Ruben
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242
| | - Ojas Pradhan
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242
| | - Nicole Brogden
- Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, Iowa City, IA 52242
| | - Jennifer Fiegel
- Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA 52242
- Department of Pharmaceutical Sciences and Experimental Therapeutics, The University of Iowa, Iowa City, IA 52242
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4
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Elshall AA, Ghoneim AM, Abd-Elmonsif NM, Osman R, Shaker DS. Boosting hair growth through follicular delivery of Melatonin through lecithin-enhanced Pickering emulsion stabilized by chitosan-dextran nanoparticles in testosterone induced androgenic alopecia rat model. Int J Pharm 2023; 639:122972. [PMID: 37084830 DOI: 10.1016/j.ijpharm.2023.122972] [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: 02/22/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/23/2023]
Abstract
The strategy in this work was loading Melatonin (MEL), the powerful antioxidant photosensitive molecule, in novel Pickering emulsions (PEs) stabilized by chitosan-dextran sulphate nanoparticles (CS-DS NPs) and enhanced by lecithin, for treatment of androgenic alopecia (AGA). Biodegradable CS-DS NPs dispersion was prepared by polyelectrolyte complexation and optimized for PEs stabilization. PEs were characterized for droplet size, zeta potential, morphology, photostability and antioxidant activity. Ex-vivo permeation study through rat full thickness skin was conducted with optimized formula. Differential tape stripping trailed by cyanoacrylate skin surface biopsy was executed, for quantifying MEL in skin compartments and hair follicles. In-vivo evaluation of MEL PE hair growth activity was performed on testosterone induced AGA rat model. Visual inspection followed by anagen to telogen phase ratio (A/T) and histopathological examinations were conducted and compared with marketed 5% minoxidil spray "Rogaine ®". Data showed that PE improved MEL antioxidant activity and photostability. Ex-vivo results displayed MEL PE high follicular deposition. In-vivo study demonstrated that MEL PE treated testosterone induced AGA rat group, restored hair loss and produced maximum hair regeneration along with prolonged anagen phase amongst tested groups. The histopathological examination revealed that MEL PE prolonged anagen stage, increased follicular density and A/T ratio by 1.5-fold. The results suggested that lecithin-enhanced PE stabilized by CS-DS NPs was found to be an effective approach to enhance photostability, antioxidant activity and follicular delivery of MEL. Thus, MEL-loaded PE could be a promising competitor to commercially marketed Minoxidil for treatment of AGA.
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Affiliation(s)
- Asmaa A Elshall
- Department of Applied Biotechnology, Biotechnology School, Nile University, Sheikh Zayed, Giza, Egypt.
| | - Amira M Ghoneim
- Department of Pharmaceutics &Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt (FUE), Cairo, Egypt.
| | - Nehad M Abd-Elmonsif
- Department of Oral Biology, Faculty of oral and dental medicine, Future University in Egypt (FUE), Cairo, Egypt
| | - Rihab Osman
- Department of Pharmaceutics & Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Dalia S Shaker
- Department of Pharmaceutics &Pharmaceutical Technology, Faculty of Pharmacy, Future University in Egypt (FUE), Cairo, Egypt
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5
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Emami S, Ebrahimi M. Bioactive wound powders as wound healing dressings and drug delivery systems. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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6
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Shah SA, Sohail M, Karperien M, Johnbosco C, Mahmood A, Kousar M. Chitosan and carboxymethyl cellulose-based 3D multifunctional bioactive hydrogels loaded with nano-curcumin for synergistic diabetic wound repair. Int J Biol Macromol 2023; 227:1203-1220. [PMID: 36473525 DOI: 10.1016/j.ijbiomac.2022.11.307] [Citation(s) in RCA: 25] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/19/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Biopolymer-based thermoresponsive injectable hydrogels with multifunctional tunable characteristics containing anti-oxidative, biocompatibility, anti-infection, tissue regeneration, and/or anti-bacterial are of abundant interest to proficiently stimulate diabetic wound regeneration and are considered as a potential candidate for diversified biomedical application but the development of such hydrogels remains a challenge. In this study, the Chitosan-CMC-g-PF127 injectable hydrogels are developed using solvent casting. The Curcumin (Cur) Chitosan-CMC-g-PF127 injectable hydrogels possess viscoelastic behavior, good swelling properties, and a controlled release profile. The degree of substitution (% DS), thermal stability, morphological behavior, and crystalline characteristics of the developed injectable hydrogels is confirmed using nuclear magnetic resonance (1H NMR), thermogravimetric analysis, scanning electron microscopy (SEM), and x-ray diffraction analysis (XRD), respectively. The controlled release of cur-micelles from the hydrogel is evaluated by drug release studies and pharmacokinetic profile (PK) using high-performance liquid chromatography (HPLC). Furthermore, compared to cur micelles the Cur-laden injectable hydrogel shows a significant increase in half-life (t1/2) up to 5.92 ± 0.7 h, mean residence time (MRT) was 15.75 ± 0.76 h, and area under the first moment curve (AUMC) is 3195.62 ± 547.99 μg/mL*(h)2 which reveals the controlled release behavior. Cytocompatibility analysis of Chitosan-CMC-g-PF127 hydrogels using 3T3-L1 fibroblasts cells and in vivo toxicity by subcutaneous injection followed by histological examination confirmed good biocompatibility of Cur-micelles loaded hydrogels. The histological results revealed the promising tissue regenerative ability and shows enhancement of fibroblasts, keratinocytes, and collagen deposition, which stimulates the epidermal junction. Interestingly, the Chitosan-CMC-g-PF127 injectable hydrogels ladened Cur exhibited a swift wound repair potential by up-surging the cell migration and proliferation at the site of injury and providing a sustained drug delivery platform for hydrophobic moieties.
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Affiliation(s)
- Syed Ahmed Shah
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan; Faculty of Pharmacy, Superior University, Lahore, Pakistan; Developmental Bioengineering, MIRA Institute for Biomedical Technology & Technical Medicine, University of Twente, Enschede, Netherlands
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan; Faculty of Pharmacy, Cyprus International University, Nicosia 99258, Cyprus.
| | - Marcel Karperien
- Developmental Bioengineering, MIRA Institute for Biomedical Technology & Technical Medicine, University of Twente, Enschede, Netherlands
| | - Castro Johnbosco
- Developmental Bioengineering, MIRA Institute for Biomedical Technology & Technical Medicine, University of Twente, Enschede, Netherlands
| | - Arshad Mahmood
- Collage of Pharmacy, Al Ain University, Abu Dhabi, United Arab Emirates; AAU Health and Biomedical Research Center, Al Ain University, Abu Dhabi, United Arab Emirates
| | - Mubeen Kousar
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
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7
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Single and multi-dose drug loaded electrospun fiber mats for wound healing applications. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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8
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Zhang W, Chen S, Jiang W, Zhang Q, Liu N, Wang Z, Li Z, Zhang D. Double-network hydrogels for biomaterials: Structure-property relationships and drug delivery. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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9
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Elangwe CN, Morozkina SN, Olekhnovich RO, Krasichkov A, Polyakova VO, Uspenskaya MV. A Review on Chitosan and Cellulose Hydrogels for Wound Dressings. Polymers (Basel) 2022; 14:polym14235163. [PMID: 36501559 PMCID: PMC9741326 DOI: 10.3390/polym14235163] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
Wound management remains a challenging issue around the world, although a lot of wound dressing materials have been produced for the treatment of chronic and acute wounds. Wound healing is a highly dynamic and complex regulatory process that involves four principal integrated phases, including hemostasis, inflammation, proliferation, and remodeling. Chronic non-healing wounds are wounds that heal significantly more slowly, fail to progress to all the phases of the normal wound healing process, and are usually stalled at the inflammatory phase. These wounds cause a lot of challenges to patients, such as severe emotional and physical stress and generate a considerable financial burden on patients and the general public healthcare system. It has been reported that about 1-2% of the global population suffers from chronic non-healing wounds during their lifetime in developed nations. Traditional wound dressings are dry, and therefore cannot provide moist environment for wound healing and do not possess antibacterial properties. Wound dressings that are currently used consist of bandages, films, foams, patches and hydrogels. Currently, hydrogels are gaining much attention as a result of their water-holding capacity, providing a moist wound-healing milieu. Chitosan is a biopolymer that has gained a lot of attention recently in the pharmaceutical industry due to its unique chemical and antibacterial nature. However, with its poor mechanical properties, chitosan is incorporated with other biopolymers, such as the cellulose of desirable biocompatibility, at the same time having the improved mechanical and physical properties of the hydrogels. This review focuses on the study of biopolymers, such as cellulose and chitosan hydrogels, for wound treatment.
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Affiliation(s)
- Collins N. Elangwe
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
- Correspondence: ; Tel.: +7-960-272-3495
| | - Svetlana N. Morozkina
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
| | - Roman O. Olekhnovich
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
| | - Alexander Krasichkov
- Departments of Radio Engineering Systems, Electrotechnical University “LETI”, Prof. Popova Street 5F, Saint Petersburg 197022, Russia
| | - Victoriya O. Polyakova
- St. Petersburg Research Institute of Phthisiopulmonology, Ligovsky 2-4, Saint Petersburg 191036, Russia
| | - Mayya V. Uspenskaya
- Chemical Engineering Center, ITMO University, Kronverkskiy Prospect, 49A, Saint Petersburg 197101, Russia
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10
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Perkušić M, Nižić Nodilo L, Ugrina I, Špoljarić D, Jakobušić Brala C, Pepić I, Lovrić J, Matijašić G, Gretić M, Zadravec D, Kalogjera L, Hafner A. Tailoring functional spray-dried powder platform for efficient donepezil nose-to-brain delivery. Int J Pharm 2022; 624:122038. [PMID: 35870666 DOI: 10.1016/j.ijpharm.2022.122038] [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: 04/29/2022] [Revised: 07/01/2022] [Accepted: 07/18/2022] [Indexed: 11/28/2022]
Abstract
Shortcomings of oral donepezil administration in the treatment of Alzheimer's disease have paved the way for ongoing investigations towards more efficient and safe donepezil nose-to-brain delivery. Herein we present the development of advantageous powder platform for donepezil nose-to-brain delivery, coupling careful design of chitosan and mannitol-based carrier matrix with spray-drying technology advantages and early consideration of adequate nasal administration mode, employing QbD approach. Unprecedentedly, ultrasonic nozzle was used to atomise the drying feed in response to size-related requirements for nasal aerosol particles. The optimised spray-drying process resulted in free-flowable dry powder with a great majority of particles larger than 10 µm, ensuring localised nasal deposition upon aerosolization, as evidenced by using 3D-printed nasal cavity model. QbD approach coupling formulation, process and administration parameters enabled optimisation of drug deposition profile reaching tremendously high 65.5 % of the applied dose deposited in the olfactory region. The leading formulation exhibited favourable swelling, mucoadhesion, drug release and permeation-enhancing properties, suiting the needs for efficient brain-targeted delivery. Results of in vitro biocompatibility and physico-chemical stability studies confirmed the leading formulation potential for safe and efficient donepezil nose-to-brain delivery. The obtained results encourage extending the study to an appropriate in vivo model needed for the final proof-of-concept.
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Affiliation(s)
- Mirna Perkušić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Laura Nižić Nodilo
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | | | | | | | - Ivan Pepić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Jasmina Lovrić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia
| | - Gordana Matijašić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia
| | - Matija Gretić
- Genera, Inc., Part of Dechra Pharmaceuticals PLC Group, Rakov Potok, Croatia
| | - Dijana Zadravec
- Department of Diagnostic and Interventional Radiology, Sestre milosrdnice University Hospital Center, University of Zagreb, Zagreb, Croatia
| | - Livije Kalogjera
- ENT Department, Zagreb School of Medicine, Sestre milosrdnice University Hospital Center, Zagreb, Croatia
| | - Anita Hafner
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Zagreb, Croatia.
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11
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Ahmadian Z, Gheybi H, Adeli M. Efficient wound healing by antibacterial property: Advances and trends of hydrogels, hydrogel-metal NP composites and photothermal therapy platforms. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103458] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Ali F, Khan I, Chen J, Akhtar K, Bakhsh EM, Khan SB. Emerging Fabrication Strategies of Hydrogels and Its Applications. Gels 2022; 8:gels8040205. [PMID: 35448106 PMCID: PMC9024659 DOI: 10.3390/gels8040205] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/04/2022] [Accepted: 03/15/2022] [Indexed: 12/19/2022] Open
Abstract
Recently, hydrogels have been investigated for the controlled release of bioactive molecules, such as for living cell encapsulation and matrices. Due to their remote controllability and quick response, hydrogels are widely used for various applications, including drug delivery. The rate and extent to which the drugs reach their targets are highly dependent on the carriers used in drug delivery systems; therefore the demand for biodegradable and intelligent carriers is progressively increasing. The biodegradable nature of hydrogel has created much interest for its use in drug delivery systems. The first part of this review focuses on emerging fabrication strategies of hydrogel, including physical and chemical cross-linking, as well as radiation cross-linking. The second part describes the applications of hydrogels in various fields, including drug delivery systems. In the end, an overview of the application of hydrogels prepared from several natural polymers in drug delivery is presented.
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Affiliation(s)
- Fayaz Ali
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (F.A.); (K.A.); (E.M.B.)
- Centre of Excellence for Advance Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
| | - Imran Khan
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science & Technology Avenida Wai Long, Taipa, Macau 999078, China;
| | - Jianmin Chen
- School of Pharmacy and Medical Technology, Putian University, No. 1133 Xueyuan Zhong Jie, Putian 351100, China
- Correspondence: (J.C.); (S.B.K.)
| | - Kalsoom Akhtar
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (F.A.); (K.A.); (E.M.B.)
| | - Esraa M. Bakhsh
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (F.A.); (K.A.); (E.M.B.)
| | - Sher Bahadar Khan
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; (F.A.); (K.A.); (E.M.B.)
- Centre of Excellence for Advance Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia
- Correspondence: (J.C.); (S.B.K.)
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13
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Assessment of Melatonin-Cultured Collagen/Chitosan Scaffolds Cross-Linked by a Glyoxal Solution as Biomaterials for Wound Healing. Antioxidants (Basel) 2022; 11:antiox11030570. [PMID: 35326220 PMCID: PMC8945360 DOI: 10.3390/antiox11030570] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 02/06/2023] Open
Abstract
Chitosan (CTS) and collagen (Coll) are natural biomaterials that have been extensively used in tissue engineering or wound healing applications, either separately or as composite materials. Most methods to fabricate CTS/Coll matrices employ chemical crosslinking to obtain solid and stable scaffolds with the necessary porosity and mechanical properties to facilitate regeneration. In this study, we comparatively assessed the physicochemical properties of 3D scaffolds loaded with a cross-linker, glyoxal. Using a scanning electron microscope, we evaluated the microstructure of resultant matrices and their mechanistic testing by the determination of the compressive modulus (Emod), the maximum force (Fmax), thermogravimetric analysis (TG), Fourier Transform Infrared Spectroscopy–Attenuated Total Reflectance (FTIR-ATR), and proliferation rate in vitro using human epidermal keratinocytes and dermal fibroblasts cultured in presence of melatonin solution (10−5 M). We observed that enhanced content of collagen (50CTS/50Coll or 20CTS/80Coll compared to 80CTS/20Coll) significantly elevated the physicochemical capacities of resultant materials. Besides, presence of 5% glyoxal increased porosity, Emod and Fmax, compared to scaffolds without glyoxal. Finally, keratinocytes and dermal fibroblasts cultured on subjected matrices in presence of melatonin revealed a prominently enhanced growth rate. This indicates that the combination of glyoxal and melatonin make it imperative to consider these materials as a promising approach for targeting skin tissue engineering or regenerative dermatology.
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14
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Hemmingsen LM, Škalko-Basnet N, Jøraholmen MW. The Expanded Role of Chitosan in Localized Antimicrobial Therapy. Mar Drugs 2021; 19:697. [PMID: 34940696 PMCID: PMC8704789 DOI: 10.3390/md19120697] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 12/19/2022] Open
Abstract
Chitosan is one of the most studied natural origin polymers for biomedical applications. This review focuses on the potential of chitosan in localized antimicrobial therapy to address the challenges of current rising antimicrobial resistance. Due to its mucoadhesiveness, chitosan offers the opportunity to prolong the formulation residence time at mucosal sites; its wound healing properties open possibilities to utilize chitosan as wound dressings with multitargeted activities and more. We provide an unbiased overview of the state-of-the-art chitosan-based delivery systems categorized by the administration site, addressing the site-related challenges and evaluating the representative formulations. Specifically, we offer an in-depth analysis of the current challenges of the chitosan-based novel delivery systems for skin and vaginal infections, including its formulations optimizations and limitations. A brief overview of chitosan's potential in treating ocular, buccal and dental, and nasal infections is included. We close the review with remarks on toxicity issues and remaining challenges and perspectives.
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Affiliation(s)
- Lisa Myrseth Hemmingsen
- Drug Transport and Delivery Research Group, Department of Pharmacy, UiT The Arctic University of Norway, Universitetsvegen 57, 9037 Tromsø, Norway;
| | | | - May Wenche Jøraholmen
- Drug Transport and Delivery Research Group, Department of Pharmacy, UiT The Arctic University of Norway, Universitetsvegen 57, 9037 Tromsø, Norway;
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Poloxamer 407-Based Thermosensitive Emulgel as a Novel Formulation Providing a Controlled Release of Oil-Soluble Pharmaceuticals-Ibuprofen Case Study. MATERIALS 2021; 14:ma14237266. [PMID: 34885421 PMCID: PMC8658182 DOI: 10.3390/ma14237266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 01/25/2023]
Abstract
This article covers the design and evaluation of a novel drug vehicle: a thermosensitive, injectable, high-oil-content (50% w/w) emulgel providing a controlled release of lipophilic pharmaceuticals. Different vegetable (castor, canola, olive, peanut, grapeseed, linseed), mineral (paraffin) and semisynthetic (isopropyl myristate, oleic acid) oils were screened for ibuprofen (IBU) solubility and for their capacity for high-shear emulsification in a 17% (w/w) aqueous solution of poloxamer 407. Chosen emulgels were subject to a rheological evaluation, a syringeability test (TA.XT texture analyser; 2 mL syringe; 18 G, 20 G and 22 G needles) and a drug release study (48 h; cellulose membrane; 0.05 mol/L phosphate buffer at pH 7.4). Castor oil turned out to be an optimal component for IBU incorporation. Blank and drug-loaded castor oil emulgels were susceptible to administration via a syringe and needle, with the absolute injection force not exceeding 3 kg (29.4 N). The drug release test revealed dose-dependent, quasi-linear kinetics, with up to 44 h of controlled, steady, linear release. The results indicate the significant potential of high-oil-content, oil-in-water thermosensitive emulgel formulations as vehicles for the controlled release of lipophilic APIs.
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Amante C, Esposito T, Del Gaudio P, Di Sarno V, Porta A, Tosco A, Russo P, Nicolais L, Aquino RP. A Novel Three-Polysaccharide Blend In Situ Gelling Powder for Wound Healing Applications. Pharmaceutics 2021; 13:pharmaceutics13101680. [PMID: 34683973 PMCID: PMC8541204 DOI: 10.3390/pharmaceutics13101680] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 12/31/2022] Open
Abstract
In this paper, alginate/pectin and alginate/pectin/chitosan blend particles, in the form of an in situ forming hydrogel, intended for wound repair applications, have been successfully developed. Particles have been used to encapsulate doxycycline in order to control the delivery of the drug, enhance its antimicrobial properties, and the ability to inhibit host matrix metalloproteinases. The presence of chitosan in the particles strongly influenced their size, morphology, and fluid uptake properties, as well as drug encapsulation efficiency and release, due to both chemical interactions between the polymers in the blend and interactions with the drug demonstrated by FTIR studies. In vitro antimicrobial studies highlighted an increase in antibacterial activity related to the chitosan amount in the powders. Moreover, in situ gelling powders are able to induce a higher release of IL-8 from the human keratinocytes that could stimulate the wound healing process in difficult-healing. Interestingly, doxycycline-loaded particles are able to increase drug activity against MMPs, with good activity against MMP-9 even at 0.5 μg/mL over 72 h. Such results suggest that such powders rich in chitosan could be a promising dressing for exudating wounds.
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Affiliation(s)
- Chiara Amante
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Tiziana Esposito
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Pasquale Del Gaudio
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
- Correspondence: ; Tel.: +39-089-969-247; Fax: +39-089-969-602
| | - Veronica Di Sarno
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Amalia Porta
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Alessandra Tosco
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Paola Russo
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
| | - Luigi Nicolais
- Materias s.r.l., University of Naples, “Federico II” Campus San Giovanni a Teduccio, I-80146 Naples, Italy;
| | - Rita P. Aquino
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy; (C.A.); (T.E.); (V.D.S.); (A.P.); (A.T.); (P.R.); (R.P.A.)
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17
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Shen S, Chen X, Shen Z, Chen H. Marine Polysaccharides for Wound Dressings Application: An Overview. Pharmaceutics 2021; 13:1666. [PMID: 34683959 PMCID: PMC8541487 DOI: 10.3390/pharmaceutics13101666] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 10/05/2021] [Accepted: 10/08/2021] [Indexed: 01/11/2023] Open
Abstract
Wound dressings have become a crucial treatment for wound healing due to their convenience, low cost, and prolonged wound management. As cutting-edge biomaterials, marine polysaccharides are divided from most marine organisms. It possesses various bioactivities, which allowing them to be processed into various forms of wound dressings. Therefore, a comprehensive understanding of the application of marine polysaccharides in wound dressings is particularly important for the studies of wound therapy. In this review, we first introduce the wound healing process and describe the characteristics of modern commonly used dressings. Then, the properties of various marine polysaccharides and their application in wound dressing development are outlined. Finally, strategies for developing and enhancing marine polysaccharide wound dressings are described, and an outlook of these dressings is given. The diverse bioactivities of marine polysaccharides including antibacterial, anti-inflammatory, haemostatic properties, etc., providing excellent wound management and accelerate wound healing. Meanwhile, these biomaterials have higher biocompatibility and biodegradability compared to synthetic ones. On the other hand, marine polysaccharides can be combined with copolymers and active substances to prepare various forms of dressings. Among them, emerging types of dressings such as nanofibers, smart hydrogels and injectable hydrogels are at the research frontier of their development. Therefore, marine polysaccharides are essential materials in wound dressings fabrication and have a promising future.
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Affiliation(s)
- Shenghai Shen
- SDU-ANU Joint Science College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China; (S.S.); (X.C.)
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, NO. 1800 Lihu Road, Wuxi 214122, China
| | - Xiaowen Chen
- SDU-ANU Joint Science College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China; (S.S.); (X.C.)
| | - Zhewen Shen
- School of Humanities, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, Sepang 43900, Selangor, Malaysia;
| | - Hao Chen
- The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, Jiangnan University, NO. 1800 Lihu Road, Wuxi 214122, China
- Marine College, Shandong University, NO. 180 Wenhua West Road, Gao Strict, Weihai 264209, China
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Fan F, Saha S, Hanjaya-Putra D. Biomimetic Hydrogels to Promote Wound Healing. Front Bioeng Biotechnol 2021; 9:718377. [PMID: 34616718 PMCID: PMC8488380 DOI: 10.3389/fbioe.2021.718377] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/13/2021] [Indexed: 01/13/2023] Open
Abstract
Wound healing is a common physiological process which consists of a sequence of molecular and cellular events that occur following the onset of a tissue lesion in order to reconstitute barrier between body and external environment. The inherent properties of hydrogels allow the damaged tissue to heal by supporting a hydrated environment which has long been explored in wound management to aid in autolytic debridement. However, chronic non-healing wounds require added therapeutic features that can be achieved by incorporation of biomolecules and supporting cells to promote faster and better healing outcomes. In recent decades, numerous hydrogels have been developed and modified to match the time scale for distinct stages of wound healing. This review will discuss the effects of various types of hydrogels on wound pathophysiology, as well as the ideal characteristics of hydrogels for wound healing, crosslinking mechanism, fabrication techniques and design considerations of hydrogel engineering. Finally, several challenges related to adopting hydrogels to promote wound healing and future perspectives are discussed.
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Affiliation(s)
- Fei Fan
- Bioengineering Graduate Program, Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Sanjoy Saha
- Bioengineering Graduate Program, Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN, United States
| | - Donny Hanjaya-Putra
- Bioengineering Graduate Program, Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, IN, United States
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, United States
- Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN, United States
- Center for Stem Cells and Regenerative Medicine, University of Notre Dame, Notre Dame, IN, United States
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Abstract
Hydrogels, due to their excellent biochemical and mechnical property, have shown attractive advantages in the field of wound dressings. However, a comprehensive review of the functional hydrogel as a wound dressing is still lacking. This work first summarizes the skin wound healing process and relates evaluation parameters and then reviews the advanced functions of hydrogel dressings such as antimicrobial property, adhesion and hemostasis, anti-inflammatory and anti-oxidation, substance delivery, self-healing, stimulus response, conductivity, and the recently emerged wound monitoring feature, and the strategies adopted to achieve these functions are all classified and discussed. Furthermore, applications of hydrogel wound dressing for the treatment of different types of wounds such as incisional wound and the excisional wound are summarized. Chronic wounds are also mentioned, and the focus of attention on infected wounds, burn wounds, and diabetic wounds is discussed. Finally, the future directions of hydrogel wound dressings for wound healing are further proposed.
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Affiliation(s)
- Yongping Liang
- Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiahui He
- Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
| | - Baolin Guo
- Frontier Institute of Science and Technology and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710049, China
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20
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Applications of Nanosized-Lipid-Based Drug Delivery Systems in Wound Care. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11114915] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impaired wound healing is an encumbering public health issue that increases the demand for developing new therapies in order to minimize health costs and enhance treatment efficacy. Available conventional therapies are still unable to maximize their potential in penetrating the skin at the target site and accelerating the healing process. Nanotechnology exhibits an excellent opportunity to enrich currently available medical treatments, enhance standard care and manage wounds. It is a promising approach, able to address issues such as the permeability and bioavailability of drugs with reduced stability or low water solubility. This paper focuses on nanosized-lipid-based drug delivery systems, describing their numerous applications in managing skin wounds. We also highlight the relationship between the physicochemical characteristics of nanosized, lipid-based drug delivery systems and their impact on the wound-healing process. Different types of nanosized-lipid-based drug delivery systems, such as vesicular systems and lipid nanoparticles, demonstrated better applicability and enhanced skin penetration in wound healing therapy compared with conventional treatments. Moreover, an improved chemically and physically stable drug delivery system, with increased drug loading capacity and enhanced bioavailability, has been shown in drugs encapsulated in lipid nanoparticles. Their applications in wound care show potential for overcoming impediments, such as the inadequate bioavailability of active agents with low solubility. Future research in nanosized-lipid-based drug delivery systems will allow the achievement of increased bioavailability and better control of drug release, providing the clinician with more effective therapies for wound care.
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21
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Shah SA, Sohail M, Khan SA, Kousar M. Improved drug delivery and accelerated diabetic wound healing by chondroitin sulfate grafted alginate-based thermoreversible hydrogels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 126:112169. [PMID: 34082970 DOI: 10.1016/j.msec.2021.112169] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/20/2021] [Accepted: 05/03/2021] [Indexed: 12/16/2022]
Abstract
Injectable hydrogels with multifunctional tunable properties comprising biocompatibility, anti-oxidative, anti-bacterial, and/or anti-infection are highly preferred to efficiently promote diabetic wound repair and its development remains a challenge. In this study, we report chondroitin sulphate (CS) and sodium alginate (SA)-based injectable hydrogel using solvent casting method loaded with curcumin that could potentiate reepithelization, increase angiogenesis, and collagen deposition at wound microenvironment to endorse healing cascade. The physical interaction and self-assembly of chondroitin sulfate grafted alginate (CS-Alg-g-PF127) hydrogel were confirmed using nuclear magnetic resonance (1H NMR) and Fourier transformed infrared spectroscopy (FT-IR), and cytocompatibility was confirmed by fibroblast viability assay. The Masson's trichrome (MT) and hematoxylin and eosin (H&E) results revealed that blank chondroitin sulfate grafted alginate (CS-Alg-g-PF127) and CUR loaded CS-Alg-g-PF127 hydrogel had promising tissue regenerative ability, and showing enhanced wound healing compared to other treatment groups. The controlled release of CUR from injectable hydrogel was evaluated by drug release studies and pharmacokinetic profile (PK) using high-performance liquid chromatography (HPLC) that exhibited the mean residence time (MRT) and area under the curve (AUC) was increased up to 16.18 h and 203.64 ± 30.1 μg/mL*h, respectively. Cytotoxicity analysis of the injectable hydrogels using 3 T3-L1 fibroblasts cells and in vivo toxicity evaluated by subcutaneous injection for 24 h followed by histological examination, confirmed good biocompatibility of CUR loaded CS-Alg-g-PF127 hydrogel. Interestingly, the results of in vivo wound healing by injectable hydrogel showed the upregulation of fibroblasts-like cells, collagen deposition, and differentiated keratinocytes stimulating dermo-epidermal junction, which might endorse that they are potential candidates for excisional wound healing models.
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Affiliation(s)
- Syed Ahmed Shah
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Muhammad Sohail
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan.
| | - Shujaat Ali Khan
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
| | - Mubeen Kousar
- Department of Pharmacy, COMSATS University, Islamabad, Abbottabad Campus, 22010, Pakistan
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22
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Rao H, Choo S, Rajeswari Mahalingam SR, Adisuri DS, Madhavan P, Md. Akim A, Chong PP. Approaches for Mitigating Microbial Biofilm-Related Drug Resistance: A Focus on Micro- and Nanotechnologies. Molecules 2021; 26:1870. [PMID: 33810292 PMCID: PMC8036581 DOI: 10.3390/molecules26071870] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/03/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023] Open
Abstract
Biofilms play an essential role in chronic and healthcare-associated infections and are more resistant to antimicrobials compared to their planktonic counterparts due to their (1) physiological state, (2) cell density, (3) quorum sensing abilities, (4) presence of extracellular matrix, (5) upregulation of drug efflux pumps, (6) point mutation and overexpression of resistance genes, and (7) presence of persister cells. The genes involved and their implications in antimicrobial resistance are well defined for bacterial biofilms but are understudied in fungal biofilms. Potential therapeutics for biofilm mitigation that have been reported include (1) antimicrobial photodynamic therapy, (2) antimicrobial lock therapy, (3) antimicrobial peptides, (4) electrical methods, and (5) antimicrobial coatings. These approaches exhibit promising characteristics for addressing the impending crisis of antimicrobial resistance (AMR). Recently, advances in the micro- and nanotechnology field have propelled the development of novel biomaterials and approaches to combat biofilms either independently, in combination or as antimicrobial delivery systems. In this review, we will summarize the general principles of clinically important microbial biofilm formation with a focus on fungal biofilms. We will delve into the details of some novel micro- and nanotechnology approaches that have been developed to combat biofilms and the possibility of utilizing them in a clinical setting.
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Affiliation(s)
- Harinash Rao
- School of Medicine, Taylor’s University, Subang Jaya, Selangor 47500, Malaysia; (H.R.); (D.S.A.); (P.M.)
| | - Sulin Choo
- School of Biosciences, Taylor’s University, Subang Jaya, Selangor 47500, Malaysia;
| | | | - Diajeng Sekar Adisuri
- School of Medicine, Taylor’s University, Subang Jaya, Selangor 47500, Malaysia; (H.R.); (D.S.A.); (P.M.)
| | - Priya Madhavan
- School of Medicine, Taylor’s University, Subang Jaya, Selangor 47500, Malaysia; (H.R.); (D.S.A.); (P.M.)
| | - Abdah Md. Akim
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor 43400, Malaysia
| | - Pei Pei Chong
- School of Biosciences, Taylor’s University, Subang Jaya, Selangor 47500, Malaysia;
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23
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Ke CL, Deng FS, Chuang CY, Lin CH. Antimicrobial Actions and Applications of Chitosan. Polymers (Basel) 2021; 13:904. [PMID: 33804268 PMCID: PMC7998239 DOI: 10.3390/polym13060904] [Citation(s) in RCA: 186] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 02/08/2023] Open
Abstract
Chitosan is a naturally originating product that can be applied in many areas due to its biocompatibility, biodegradability, and nontoxic properties. The broad-spectrum antimicrobial activity of chitosan offers great commercial potential for this product. Nevertheless, the antimicrobial activity of chitosan varies, because this activity is associated with its physicochemical characteristics and depends on the type of microorganism. In this review article, the fundamental properties, modes of antimicrobial action, and antimicrobial effects-related factors of chitosan are discussed. We further summarize how microorganisms genetically respond to chitosan. Finally, applications of chitosan-based biomaterials, such as nanoparticles and films, in combination with current clinical antibiotics or antifungal drugs, are also addressed.
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Affiliation(s)
| | | | | | - Ching-Hsuan Lin
- Department of Biochemical Science and Technology, College of Life Science, National Taiwan University, Taipei 10617, Taiwan; (C.-L.K.); (F.-S.D.); (C.-Y.C.)
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24
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Quah SP, Zhang Y, Fluerasu A, Yu X, Zheng B, Yin X, Liu W, Bhatia SR. Techniques to characterize dynamics in biomaterials microenvironments: XPCS and microrheology of alginate/PEO-PPO-PEO hydrogels. SOFT MATTER 2021; 17:1685-1691. [PMID: 33367407 PMCID: PMC7962546 DOI: 10.1039/d0sm01628d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Many recent studies have highlighted the timescale for stress relaxation of biomaterials on the microscale as an important factor in regulating a number of cell-material interactions, including cell spreading, proliferation, and differentiation. Relevant timescales on the order of 0.1-100 s have been suggested by several studies. While such timescales are accessible through conventional mechanical rheology, several biomaterials have heterogeneous structures, and stress relaxation mechanisms of the bulk material may not correspond to that experienced in the cellular microenvironment. Here we employ X-ray photon correlation spectroscopy (XPCS) to explore the temperature-dependent dynamics, relaxation time, and microrheology of multicomponent hydrogels comprising of commercial poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock copolymer F127 and alginate. Previous studies on this system have shown thermoreversible behavior in the bulk oscillatory shear rheology. At physiological temperatures, bulk rheology of these samples shows behavior characteristic of a soft solid, with G' > G'' and no crossover between G' and G'' over the measurable frequency range, indicating a relaxation time >125 s. By contrast, XPCS-based microrheology shows viscoelastic behavior at low frequencies, and XPCS-derived correlation functions show relaxation times ranging from 10-45 s on smaller length scales. Thus, we are able to use XPCS to effectively probe the viscoelasticity and relaxation behavior within the material microenvironments.
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Affiliation(s)
- Suan P Quah
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Yugang Zhang
- NSLS-II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Andrei Fluerasu
- NSLS-II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Xiaoxi Yu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Bingqian Zheng
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Xuechen Yin
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Weiping Liu
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| | - Surita R Bhatia
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
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25
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Soriano JL, Calpena AC, Rodríguez-Lagunas MJ, Domènech Ò, Bozal-de Febrer N, Garduño-Ramírez ML, Clares B. Endogenous Antioxidant Cocktail Loaded Hydrogel for Topical Wound Healing of Burns. Pharmaceutics 2020; 13:pharmaceutics13010008. [PMID: 33375069 PMCID: PMC7822007 DOI: 10.3390/pharmaceutics13010008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/14/2020] [Accepted: 12/17/2020] [Indexed: 12/19/2022] Open
Abstract
The main goal of this work is the study of the skin wound healing efficacy of an antioxidant cocktail consisting of vitamins A, D, E and the endogenous pineal hormone melatonin (MLT), with all of these loaded into a thermosensitive hydrogel delivery system. The resulting formulation was characterized by scanning electron microscopy. The antioxidant efficacy and microbiological activity against Gram positive and Gram negative strains were also assayed. The skin healing efficacy was tested using an in vivo model which included histological evaluation. Furthermore, atomic force microscopy was employed to evaluate the wound healing efficacy of rat skin burns through the determination of its elasticity at the nanoscale using force spectroscopy analysis. The resulting hydrogel exhibited sol state at low temperature and turned into a gel at 30 ± 0.2 °C. The hydrogel containing the antioxidant cocktail showed higher scavenging activity than the hydrogel containing vitamins or MLT, separately. The formulation showed optimal antimicrobial activity. It was comparable to a commercial reference. It was also evidenced that the hydrogel containing the antioxidant cocktail exhibited the strongest healing process in the skin burns of rats, similar to the assayed commercial reference containing silver sulfadiazine. Histological studies confirmed the observed results. Finally, atomic force microscopy demonstrated a similar distribution of Young's modulus values between burned skin treated with the commercial reference and burned skin treated with hydrogel containing the antioxidant cocktail, and all these with healthy skin. The use of an antioxidant cocktail of vitamins and MLT might be a promising treatment for skin wounds for future clinical studies.
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Affiliation(s)
- José L. Soriano
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
| | - Ana C. Calpena
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain;
- Nanoscience & Nanotechnology Institute (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Correspondence: (A.C.C.); (B.C.); Tel.: +34-934-024-560 (A.C.C.); +34-958-246-664 (B.C.)
| | - María J. Rodríguez-Lagunas
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain;
- Nutrition and Food Safety Research Institute (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Òscar Domènech
- Department of Pharmacy and Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain;
- Nanoscience & Nanotechnology Institute (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Nuria Bozal-de Febrer
- Department of Biology, Healthcare and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, 27-31 Joan XXIII Ave., 08028 Barcelona, Spain;
| | - María L. Garduño-Ramírez
- Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Av. Universidad No. 1001, Col Chamilpa, 62209 Cuernavaca, Mexico;
| | - Beatriz Clares
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of Granada, 18071 Granada, Spain;
- Nanoscience & Nanotechnology Institute (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Biosanitary Institute of Granada (ibs.GRANADA), 18012 Granada, Spain
- Correspondence: (A.C.C.); (B.C.); Tel.: +34-934-024-560 (A.C.C.); +34-958-246-664 (B.C.)
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26
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Battling Biofilm Forming Nosocomial Pathogens Using Chitosan and Pluronic F127. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2020. [DOI: 10.22207/jpam.14.3.28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Biofilm represents a potential strut in bacterial treatment failure. It has a dual action; it affords microbial resistance against antibiotics and facilitate transmission of pathogenic bacteria. Nosocomial bacteria pose a serious problem in healthcare units; it prolongs patient hospital stay and increases the mortality rates beside other awful economical effect. This study was planned for targeting nosocomial bacterial biofilm using natural and biologically safe compounds like Chitosan and/or Pluronic F127. Ninety-five isolates were recovered from 107 nosocomial clinical samples. Different bacterial and fungal species were detected, from which Klebsiella pneumonia (23%), Pseudomonas aeruginosa (19%), Acinetobacter baumannii (18%) and E.coli (17%) were the predominate organisms. Pseudomonas aeruginosa, Acinetobacter baumanni and Klebsiella pneumonia were the abundant antibiotic resistant strains with multi-resistance pattern of 72%, 65% and 59%, respectively. A significant percentage of these isolates were strong biofilm forming. Herein, we investigate the effect of Chitosan and Pluronic F127 alone and in combination with each other against biofilm production. Chitosan show variable degree of biofilm inhibition, while Pluronic F127 was able to retard biofilm formation by 80% to 90% in most strain. There is no significant difference (P< 0.05) between Pluronic F127 alone and its effect in combination with Chitosan.
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Zarrintaj P, Ramsey JD, Samadi A, Atoufi Z, Yazdi MK, Ganjali MR, Amirabad LM, Zangene E, Farokhi M, Formela K, Saeb MR, Mozafari M, Thomas S. Poloxamer: A versatile tri-block copolymer for biomedical applications. Acta Biomater 2020; 110:37-67. [PMID: 32417265 DOI: 10.1016/j.actbio.2020.04.028] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 11/16/2022]
Abstract
Poloxamers, also called Pluronic, belong to a unique class of synthetic tri-block copolymers containing central hydrophobic chains of poly(propylene oxide) sandwiched between two hydrophilic chains of poly(ethylene oxide). Some chemical characteristics of poloxamers such as temperature-dependent self-assembly and thermo-reversible behavior along with biocompatibility and physiochemical properties make poloxamer-based biomaterials promising candidates for biomedical application such as tissue engineering and drug delivery. The microstructure, bioactivity, and mechanical properties of poloxamers can be tailored to mimic the behavior of various types of tissues. Moreover, their amphiphilic nature and the potential to self-assemble into the micelles make them promising drug carriers with the ability to improve the drug availability to make cancer cells more vulnerable to drugs. Poloxamers are also used for the modification of hydrophobic tissue-engineered constructs. This article collects the recent advances in design and application of poloxamer-based biomaterials in tissue engineering, drug/gene delivery, theranostic devices, and bioinks for 3D printing. STATEMENT OF SIGNIFICANCE: Poloxamers, also called Pluronic, belong to a unique class of synthetic tri-block copolymers containing central hydrophobic chains of poly(propylene oxide) sandwiched between two hydrophilic chains of poly(ethylene oxide). The microstructure, bioactivity, and mechanical properties of poloxamers can be tailored to mimic the behavior of various types of tissues. Moreover, their amphiphilic nature and the potential to self-assemble into the micelles make them promising drug carriers with the ability to improve the drug availability to make cancer cells more vulnerable to drugs. However, no reports have systematically reviewed the critical role of poloxamer for biomedical applications. Research on poloxamers is growing today opening new scenarios that expand the potential of these biomaterials from "traditional" treatments to a new era of tissue engineering. To the best of our knowledge, this is the first review article in which such issue is systematically reviewed and critically discussed in the light of the existing literature.
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Affiliation(s)
- Payam Zarrintaj
- Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States
| | - Joshua D Ramsey
- Chemical Engineering, Oklahoma State University, 420 Engineering North, Stillwater, OK 74078, United States
| | - Ali Samadi
- Polymer Engineering Department, Faculty of Engineering, Urmia University, Urmia, Iran
| | - Zhaleh Atoufi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohsen Khodadadi Yazdi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences, University of Tehran, Tehran, Iran
| | | | - Ehsan Zangene
- Department of Bioinformatics, Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran, P.O. Box 1316943551, Tehran, Iran
| | - Krzysztof Formela
- Department of Polymer Technology, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Mohammad Reza Saeb
- Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran.
| | - Masoud Mozafari
- Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Sabu Thomas
- School of Chemical Sciences, M G University, Kottayam 686560, Kerala, India
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Sreedhar A, Aguilera-Aguirre L, Singh KK. Mitochondria in skin health, aging, and disease. Cell Death Dis 2020; 11:444. [PMID: 32518230 PMCID: PMC7283348 DOI: 10.1038/s41419-020-2649-z] [Citation(s) in RCA: 125] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 02/08/2023]
Abstract
The skin is a high turnover organ, and its constant renewal depends on the rapid proliferation of its progenitor cells. The energy requirement for these metabolically active cells is met by mitochondrial respiration, an ATP generating process driven by a series of protein complexes collectively known as the electron transport chain (ETC) that is located on the inner membrane of the mitochondria. However, reactive oxygen species (ROS) like superoxide, singlet oxygen, peroxides are inevitably produced during respiration and disrupt macromolecular and cellular structures if not quenched by the antioxidant system. The oxidative damage caused by mitochondrial ROS production has been established as the molecular basis of multiple pathophysiological conditions, including aging and cancer. Not surprisingly, the mitochondria are the primary organelle affected during chronological and UV-induced skin aging, the phenotypic manifestations of which are the direct consequence of mitochondrial dysfunction. Also, deletions and other aberrations in the mitochondrial DNA (mtDNA) are frequent in photo-aged skin and skin cancer lesions. Recent studies have revealed a more innate role of the mitochondria in maintaining skin homeostasis and pigmentation, which are affected when the essential mitochondrial functions are impaired. Some common and rare skin disorders have a mitochondrial involvement and include dermal manifestations of primary mitochondrial diseases as well as congenital skin diseases caused by damaged mitochondria. With studies increasingly supporting the close association between mitochondria and skin health, its therapeutic targeting in the skin-either via an ATP production boost or free radical scavenging-has gained attention from clinicians and aestheticians alike. Numerous bioactive compounds have been identified that improve mitochondrial functions and have proved effective against aged and diseased skin. In this review, we discuss the essential role of mitochondria in regulating normal and abnormal skin physiology and the possibility of targeting this organelle in various skin disorders.
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Affiliation(s)
| | | | - Keshav K Singh
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
- Integartive Center For Aging Research and O'Neal Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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The Correlation between Physical Crosslinking and Water-Soluble Drug Release from Chitosan-Based Microparticles. Pharmaceutics 2020; 12:pharmaceutics12050455. [PMID: 32429349 PMCID: PMC7284795 DOI: 10.3390/pharmaceutics12050455] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/07/2020] [Accepted: 05/14/2020] [Indexed: 11/23/2022] Open
Abstract
Microparticles containing water-soluble zidovudine were prepared by spray-drying using chitosan glutamate and beta-glycerophosphate as an ion crosslinker (CF). The Box–Behnken design was applied to optimize the microparticles in terms of their drug loading and release behavior. Physicochemical studies were undertaken to support the results from dissolution tests and to evaluate the impact of the crosslinking ratio on the microparticles’ characteristics. The zidovudine dissolution behavior had a complex nature which comprised two phases: an initial burst effect followed with a prolonged release stage. The initial drug release, which can be modulated by the crosslinking degree, was primarily governed by the dissolution of the drug crystals located on the microparticles’ surfaces. In turn, the further dissolution stage was related to the drug diffusion from the swollen polymer matrix and was found to correlate with the drug loading. Differential Scanning Calorimetry (DSC) studies revealed the partial incorporation of a non-crystallized drug within the polymer matrix, which correlated with the amount of CF. Although CF influenced the swelling capacity of chitosan glutamate microparticles, surprisingly a higher amount of CF did not impact the time required for 80% of the drug to be released markedly. The formulation with the lowest polymer:CF ratio, 3:1, was selected as optimal, providing satisfactory drug loading and displaying a moderate burst effect within the first 30 min of the study, followed with a prolonged drug release of up to 210 min.
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de Souza ML, Dos Santos WM, de Sousa ALMD, de Albuquerque Wanderley Sales V, Nóbrega FP, de Oliveira MVG, Rolim-Neto PJ. Lipid Nanoparticles as a Skin Wound Healing Drug Delivery System: Discoveries and Advances. Curr Pharm Des 2020; 26:4536-4550. [PMID: 32303163 DOI: 10.2174/1381612826666200417144530] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/11/2020] [Indexed: 12/12/2022]
Abstract
Chronic wounds are a remarkable cause of morbidity, requiring long-time treatments with a significant impact on the quality of life and high costs for public health. Although there are a variety of topical skin preparations commercially available, they have several limitations that frequently impair wound healing, such as drug instability, toxicity, limited time of action and ineffective skin permeation. In recent years, researchers have focused on the development of new effective treatments for wound healing and shown frequent interest in nanometric drug delivery systems to overcome such obstacles. In dermatology, lipid nanoparticles (LNPs) have received great attention from researchers due to their great functionalities, greater adhesion to the skin and film formation, enabling the hydration and maintenance of skin integrity, as well as present a more effective penetration through the skin barrier. This review provides an update on topical formulations based on Solid Lipid Nanoparticles (SLNs) and Nanostructured Lipid Carriers (NLCs) as wound healing treatments. Both SLNs and NLCs are able to increase solubility and stability of active pharmaceutical ingredients and increase skin penetration compared to the free drugs. Additionally, SLNs and NLCs can increase pharmacological activity, increase the release profile of the drugs, promote synergistic effects and improve the sensory properties of the final formulation. Topical dosage forms containing nanoparticles have been extensively evaluated for wound healing activity, mainly the dressings, films and scaffolds. Therefore, lipid nanoparticles have contributed in improving wound healing therapies when incorporated into other dosage forms with better efficacy and lesser adverse effects than conventional formulations.
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Affiliation(s)
- Myla Lôbo de Souza
- Laboratory of Drug Technology, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Widson Michael Dos Santos
- Laboratory of Drug Technology, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Fernanda Pontes Nóbrega
- Laboratory of Drug Technology, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | | | - Pedro José Rolim-Neto
- Laboratory of Drug Technology, Department of Pharmaceutical Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
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Zhao H, Wang L, Belwal T, Jiang Y, Li D, Xu Y, Luo Z, Li L. Chitosan-based melatonin bilayer coating for maintaining quality of fresh-cut products. Carbohydr Polym 2020; 235:115973. [PMID: 32122505 DOI: 10.1016/j.carbpol.2020.115973] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/25/2019] [Accepted: 02/10/2020] [Indexed: 11/19/2022]
Abstract
This work was designed to develop the chitosan-based melatonin layer-by-layer assembly (CMLLA) via the inclusion method. The structural characterizations and interaction present in CMLLA were investigated by the scanning electron microscope (SEM), X-ray diffraction (XRD) and Fourier Transform-Infrared spectroscopy (FTIR). The ratio of chitosan (CH) to carboxymethylcellulose (CMC) greatly influenced the mechanical properties, including the tensile strength, moisture content and color performance. Results showed that both antioxidant and antimicrobial properties of CMLLA were enhanced with the addition of melatonin (MLT). Furthermore, it was demonstrated that the CMLLA with 1.2 % (w/v) CH, 0.8 % (w/v) CMC and 50 mg/L MLT better contributed to the delay of chlorophyll degradation and the maintenance of shelf-life quality. Results from this study might open up new insights into the approaches of quality improvement of postharvest fresh products by incorporating the natural antioxidant compounds into natural polymers.
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Affiliation(s)
- Hangyue Zhao
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Lei Wang
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Tarun Belwal
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Yunhong Jiang
- Bristol Dental School, University of Bristol, Bristol, BS1 2LY, UK.
| | - Dong Li
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Yanqun Xu
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China.
| | - Zisheng Luo
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China.
| | - Li Li
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China.
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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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Elkady OA, Tadros MI, El-Laithy HM. QbD Approach for Novel Crosslinker-Free Ionotropic Gelation of Risedronate Sodium-Chitosan Nebulizable Microspheres: Optimization and Characterization. AAPS PharmSciTech 2019; 21:14. [PMID: 31807950 DOI: 10.1208/s12249-019-1561-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/07/2019] [Indexed: 01/29/2023] Open
Abstract
Risedronate sodium (RS) is a potent inhibitor of bone resorption, having an extreme poor permeability and limited oral bioavailability (0.62%). RS should be orally administered under fasting conditions while keeping in an upright posture for at least 30 min to diminish common gastroesophageal injuries. To surmount such limitations, novel risedronate-chitosan (RS-CS) crosslinker-free nebulizable microspheres were developed adopting the quality by design (QbD) approach and risk assessment (RA) thinking. RS:CS ratio, surfactant (Pluronic® F127) concentration, homogenization duration, speed, and temperature were identified using Ishikawa diagrams as the highest formulation and process risk factors affecting the critical quality attributes (CQAs), average particle size (PS), and entrapment efficiency (EE%). The risk factors were screened using the Plackett-Burman design, and the levels of the most significant factors were optimized using a multilevel factorial design to explore the optimized system with the least PS, maximum EE%, and a prolonged drug release profile. The optimized system (B6) was developed at a RS:CS ratio of 1:7, a surfactant concentration of 2% (w/v), and a homogenization speed of 14,000 rpm. It revealed good correlation with QbD theoretical prediction, where positively charged (47.9 ± 3.39 mV) discrete, spherical microspheres (3.47 ± 0.16 μm) having a high EE% (94.58 ± 0.19%) and prolonged RS release over 12 h (Q12 h, 89.70 ± 0.64%) were achieved. In vivo lung deposition after intratracheal instillation of B6 confirmed the delivery of high RS percentage to rat lung tissues (87 ± 3.54%) and its persistence for 24 h. This investigation demonstrated the effectiveness of QbD philosophy in developing RS-CS crosslinker-free nebulizable microspheres.
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Affiliation(s)
- Omar A Elkady
- Department of Pharmaceutics, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 11787, Egypt
| | - Mina Ibrahim Tadros
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562, Egypt.
| | - Hanan M El-Laithy
- Department of Pharmaceutics, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza, 11787, Egypt
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562, Egypt
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Evaluation of stability and in vitro wound healing potential of melatonin loaded (lipid enriched) chitosan based microspheres. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2019; 69:635-648. [PMID: 31639097 DOI: 10.2478/acph-2019-0049] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/23/2019] [Indexed: 01/19/2023]
Abstract
The aim of this study was to evaluate long-term stability and assess the wound healing potential of the innovative melatonin-loaded lipid-enriched hybrid system compared to conventional melatonin-loaded chitosan microspheres. The hybrid system contained nanostructured lipid carrier incorporated in the chitosan matrix, in order to modify melatonin release and alter physicochemical characteristics of the delivery system. Stability testing was performed during a six-month period under two conditions: refrigerated (5 ± 3 °C) and at room temperature (25 ± 2 °C/60 ± 5 % RH). Samples stored at both conditions were analyzed in terms of particle size, zeta potential, moisture content and thermal properties. At the end of testing, drug content was determined in all samples. Dressings wound healing potential was assessed by in vitro scratch test using human skin fibroblast cell line. Although both systems showed good stability characteristics, the addition of lipids in the system has improved its wound healing potential.
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Nižić L, Potaś J, Winnicka K, Szekalska M, Erak I, Gretić M, Jug M, Hafner A. Development, characterisation and nasal deposition of melatonin-loaded pectin/hypromellose microspheres. Eur J Pharm Sci 2019; 141:105115. [PMID: 31654755 DOI: 10.1016/j.ejps.2019.105115] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 10/01/2019] [Accepted: 10/20/2019] [Indexed: 11/19/2022]
Abstract
In this study, we present the development of spray-dried pectin/hypromellose microspheres as efficient melatonin carrier for targeted nasal delivery. Different pectin to hypromellose weight ratios in the spray-dried feed were employed (i.e. 1:0, 3:1, 1:1 and 1:3) in order to optimise microsphere physicochemical properties influencing overall powder behaviour prior, during and upon nasal delivery. All microspheres assured complete melatonin entrapment and increased dissolution rate in relation to pure melatonin powder. Among all combinations tested, combining pectin with hypromellose at 1:3 wt ratio resulted in the microspheres with the highest potential for melatonin nasal delivery as they assured highest swelling ability and most prominent mucoadhesive properties. Studies on deposition profile revealed adequate turbinate and olfactory deposition of microsphere/lactose monohydrate powder blend administered nasally using MIAT® device, complementing findings relevant for their therapeutic potential. In conclusion, developed microspheres bear the potential to ensure prolonged melatonin retention at the nasal mucosa, improved bioavailability and advanced therapeutic outcome.
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Affiliation(s)
- Laura Nižić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Joanna Potaś
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Medical University of Bialystok, Bialystok, Poland
| | - Katarzyna Winnicka
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Medical University of Bialystok, Bialystok, Poland
| | - Marta Szekalska
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Medical University of Bialystok, Bialystok, Poland
| | - Iva Erak
- R&D, PLIVA Croatia Ltd., TEVA Group Member, Zagreb, Croatia
| | - Matija Gretić
- University of Zagreb, Faculty of Chemical Engineering and Technology, Department of Mechanical and Thermal Process Engineering, Zagreb, Croatia
| | - Mario Jug
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia
| | - Anita Hafner
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, Zagreb, Croatia.
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Rusanova I, Martínez-Ruiz L, Florido J, Rodríguez-Santana C, Guerra-Librero A, Acuña-Castroviejo D, Escames G. Protective Effects of Melatonin on the Skin: Future Perspectives. Int J Mol Sci 2019; 20:ijms20194948. [PMID: 31597233 PMCID: PMC6802208 DOI: 10.3390/ijms20194948] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 09/30/2019] [Accepted: 10/07/2019] [Indexed: 12/20/2022] Open
Abstract
When exposed to hostile environments such as radiation, physical injuries, chemicals, pollution, and microorganisms, the skin requires protective chemical molecules and pathways. Melatonin, a highly conserved ancient molecule, plays a crucial role in the maintenance of skin. As human skin has functional melatonin receptors and also acts as a complete system that is capable of producing and regulating melatonin synthesis, melatonin is a promising candidate for its maintenance and protection. Below, we review the studies of new metabolic pathways involved in the protective functions of melatonin in dermal cells. We also discuss the advantages of the topical use of melatonin for therapeutic purposes and skin protection. In our view, endogenous intracutaneous melatonin production, together with topically-applied exogenous melatonin and its metabolites, represent two of the most potent defense systems against external damage to the skin.
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Affiliation(s)
- Iryna Rusanova
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
- Department of Physiology, University of Granada, 18016 Granada, Spain.
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable, Instituto de Investigación Biosanitaria CIBERFES, IBS. Granada, Granada Hospital Complex, 18016 Granada, Spain.
| | - Laura Martínez-Ruiz
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
| | - Javier Florido
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
| | - César Rodríguez-Santana
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
| | - Ana Guerra-Librero
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable, Instituto de Investigación Biosanitaria CIBERFES, IBS. Granada, Granada Hospital Complex, 18016 Granada, Spain.
| | - Darío Acuña-Castroviejo
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
- Department of Physiology, University of Granada, 18016 Granada, Spain.
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable, Instituto de Investigación Biosanitaria CIBERFES, IBS. Granada, Granada Hospital Complex, 18016 Granada, Spain.
| | - Germaine Escames
- Biomedical Research Center, Health Sciences Technology Park, University of Granada, 18016 Granada, Spain.
- Department of Physiology, University of Granada, 18016 Granada, Spain.
- Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable, Instituto de Investigación Biosanitaria CIBERFES, IBS. Granada, Granada Hospital Complex, 18016 Granada, Spain.
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Lee J, Hlaing SP, Cao J, Hasan N, Ahn HJ, Song KW, Yoo JW. In Situ Hydrogel-Forming/Nitric Oxide-Releasing Wound Dressing for Enhanced Antibacterial Activity and Healing in Mice with Infected Wounds. Pharmaceutics 2019; 11:pharmaceutics11100496. [PMID: 31569746 PMCID: PMC6836051 DOI: 10.3390/pharmaceutics11100496] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 12/29/2022] Open
Abstract
The eradication of bacteria from wound sites and promotion of healing are essential for treating infected wounds. Nitric oxide (NO) is desirable for these purposes due to its ability to accelerate wound healing and its broad-spectrum antibacterial effects. We developed an in situ hydrogel-forming/NO-releasing powder dressing (NO/GP), which is a powder during storage and forms a hydrogel when applied to wounds, as a novel NO-releasing formulation to treat infected wounds. An NO/GP fine powder (51.5 μm) was fabricated by blending and micronizing S-nitrosoglutathione (GSNO), alginate, pectin, and polyethylene glycol (PEG). NO/GP remained stable for more than four months when stored at 4 or 37 °C. When applied to wounds, NO/GP absorbed wound fluid and immediately converted to a hydrogel. Additionally, wound fluid triggered a NO release from NO/GP for more than 18 h. The rheological properties of hydrogel-transformed NO/GP indicated that NO/GP possesses similar adhesive properties to marketed products (Vaseline). NO/GP resulted in a 6-log reduction in colony forming units (CFUs) of methicillin resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa, which are representative drug-resistant gram-positive and -negative bacteria, respectively. The promotion of wound healing by NO/GP was demonstrated in mice with full-thickness wounds challenged with MRSA and P. aeruginosa. Thus, NO/GP is a promising formulation for the treatment of infected wounds.
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Affiliation(s)
- Juho Lee
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Shwe Phyu Hlaing
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Jiafu Cao
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Nurhasni Hasan
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Hye-Jin Ahn
- Department of Organic Material Science and Engineering, Pusan National University, Busan 46241, Korea.
| | - Ki-Won Song
- Department of Organic Material Science and Engineering, Pusan National University, Busan 46241, Korea.
| | - Jin-Wook Yoo
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
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Charged groups synergically enhanced elasticity and tunable swelling/shrinking of poly(dialkylaminoethyl methacrylate)/layered silicate nanocomposite cryogels. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Pandit AP, Koyate KR, Kedar AS, Mute VM. Spongy wound dressing of pectin/carboxymethyl tamarind seed polysaccharide loaded with moxifloxacin beads for effective wound heal. Int J Biol Macromol 2019; 140:1106-1115. [PMID: 31470049 DOI: 10.1016/j.ijbiomac.2019.08.202] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 12/18/2022]
Abstract
An attempt was made to formulate moxifloxacin loaded alginate beads incorporated into spongy wound dressing to heal chronic wounds as well as to reduce frequency of painful dressing change. Moxifloxacin loaded beads (sodium alginate:pectin, 1:1) were prepared by ionic gelation method, with entrapment efficiency 94.52%, crushing strength 25.30 N and drug release 90.52%. Beads were further incorporated into wound dressing, made of pectin and carboxymethyl tamarind seed polysaccharide (CMTSP). Spongy wound dressing was obtained by freeze drying technology, which showed good folding endurance, high wound fluid absorption and good crushing strength. Drug release was found to be 85.09%. Dressing made of CMTSP:pectin (1.5:2) showed good water vapour transmission and antibacterial activity. Porous nature of dressing absorbed exudates of wound. Excision wound model in rats revealed wound healing within 17 days: groups I (control), II (moxifloxacin beads loaded wound dressing), III (moxifloxacin beads), IV (pectin film) and V (sodium alginate film) showed 65.28, 99.09, 86.90, 66.84 and 64.30% wound closure, respectively. To conclude, moxifloxacin beads loaded spongy wound dressing has good healing and wound closing potential compared to pectin film and moxifloxacin beads. Thus, the formulation is novel for biomedical application which reduced the frequency of painful dressing change.
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Affiliation(s)
- Ashlesha P Pandit
- Department of Pharmaceutics, JSPM Rajarshi Shahu College of Pharmacy and Research, Tathawade, Pune 411 033, Maharashtra, India.
| | - Kanchan R Koyate
- Department of Pharmaceutics, JSPM Rajarshi Shahu College of Pharmacy and Research, Tathawade, Pune 411 033, Maharashtra, India
| | - Ashwini S Kedar
- Department of Pharmaceutics, JSPM Rajarshi Shahu College of Pharmacy and Research, Tathawade, Pune 411 033, Maharashtra, India
| | - Vaishali M Mute
- Department of Pharmacology, JSPM Rajarshi Shahu College of Pharmacy and Research, Tathawade, Pune 411 033, Maharashtra, India
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40
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Melatonin loaded lipid enriched chitosan microspheres – Hybrid dressing for moderate exuding wounds. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Quah SP, Nykypanchuk D, Bhatia SR. Temperature‐dependent structure and compressive mechanical behavior of alginate/polyethylene oxide–poly(propylene oxide)–poly(ethylene oxide) hydrogels. J Biomed Mater Res B Appl Biomater 2019; 108:834-844. [DOI: 10.1002/jbm.b.34437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/09/2019] [Accepted: 05/31/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Suan P. Quah
- Department of Chemistry Stony Brook University Stony Brook New York
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials Brookhaven National Laboratory Upton New York
| | - Surita R. Bhatia
- Department of Chemistry Stony Brook University Stony Brook New York
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Jiao J, Huang J, Zhang Z. Hydrogels based on chitosan in tissue regeneration: How do they work? A mini review. J Appl Polym Sci 2018. [DOI: 10.1002/app.47235] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Jiao Jiao
- Neuropsychiatric Institute; Medical School of Southeast University; Nanjing Jiangsu 210009 China
- Department of Neurology; Affiliated ZhongDa Hospital; Nanjing Jiangsu 210009 China
| | - Jinjian Huang
- Lab for Trauma and Surgical Infections, Department of Surgery; Jinling Hospital; Nanjing Jiangsu 210002 China
| | - Zhijun Zhang
- Neuropsychiatric Institute; Medical School of Southeast University; Nanjing Jiangsu 210009 China
- Department of Neurology; Affiliated ZhongDa Hospital; Nanjing Jiangsu 210009 China
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Rukavina Z, Šegvić Klarić M, Filipović-Grčić J, Lovrić J, Vanić Ž. Azithromycin-loaded liposomes for enhanced topical treatment of methicillin-resistant Staphyloccocus aureus (MRSA) infections. Int J Pharm 2018; 553:109-119. [PMID: 30312749 DOI: 10.1016/j.ijpharm.2018.10.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/22/2018] [Accepted: 10/08/2018] [Indexed: 12/21/2022]
Abstract
Antibiotic delivery via liposomal encapsulation represents a promising approach for the efficient topical treatment of skin infections. The present study aimed to investigate the potential of using different types of azithromycin (AZT)-loaded liposomes to locally treat skin infections caused by methicillin-resistant Staphylococcus aureus (MRSA) strains. Conventional liposomes (CLs), deformable liposomes (DLs), propylene glycol-containing liposomes (PGLs) and cationic liposomes (CATLs) encapsulating AZT were prepared, and their physical characteristics, drug release profiles, ex vivo skin penetration/deposition abilities, in vitro anti-MRSA activities (planktonic bacteria and biofilm) and cell biocompatibilities were assessed. The (phospho)lipid composition and presence of surfactant or propylene glycol affected the physical characteristics of the liposomes, the release profile of AZT, its deposition inside the skin, as well as in vitro antibacterial efficacy and tolerability with the skin cells. All the liposomes retained AZT inside the skin more efficiently than did the control and were biocompatible with keratinocytes and fibroblasts. CATLs, DLs and PGLs efficiently inhibited MRSA strain growth and were superior to free AZT in preventing biofilm formation, exhibiting minimal inhibitory concentrations and minimal biofilm inhibitory concentrations up to 32-fold lower than those of AZT solution, thus confirming their potential for improved topical treatment of MRSA-caused skin infections.
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Affiliation(s)
- Zora Rukavina
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, A. Kovačića 1, 10000 Zagreb, Croatia.
| | - Maja Šegvić Klarić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Microbiology, A. Kovačića 1, 10000 Zagreb, Croatia.
| | - Jelena Filipović-Grčić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, A. Kovačića 1, 10000 Zagreb, Croatia.
| | - Jasmina Lovrić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, A. Kovačića 1, 10000 Zagreb, Croatia.
| | - Željka Vanić
- University of Zagreb, Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Technology, A. Kovačića 1, 10000 Zagreb, Croatia.
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Chen X, Sun C, Laborda P, Zhao Y, Palmer I, Fu ZQ, Qiu J, Liu F. Melatonin Treatment Inhibits the Growth of Xanthomonas oryzae pv. oryzae. Front Microbiol 2018; 9:2280. [PMID: 30337911 PMCID: PMC6180160 DOI: 10.3389/fmicb.2018.02280] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/06/2018] [Indexed: 12/14/2022] Open
Abstract
Xanthomonas oryzae pv. oryzae (Xoo) causes rice bacterial blight (BB), one of the most widespread and destructive diseases in rice-growing regions worldwide. Melatonin enhances pathogen resistance by inducing plant innate immunity, but the direct effect of melatonin on plant pathogenic bacteria is poorly understood. In this study, we investigated the direct effects of melatonin on Xoo. Exogenous melatonin at 200 μg/mL significantly inhibited the proliferation of Xoo and reduced the mRNA expression of five genes involved in cell division. This concentration of melatonin also inhibited the motility and biofilm formation of Xoo. Notably, melatonin was observed to alter the length of Xoo cells. To provide deeper insights into the mechanisms underlying this antibacterial activity, we examined global gene expression changes in Xoo strain PXO99 in response to the application of 200 μg/mL melatonin using RNA sequencing (RNA-Seq). A wide range of differentially expressed genes (DEGs) related to catalytic activity and metal-binding activity were downregulated in Xoo cells in response to the melatonin treatment. In addition, DEGs responsible for carbohydrate and amino acid metabolism were also downregulated. These results suggest that the inhibitory mechanism of melatonin on Xoo proliferation may involve the regulation of cell division in combination with a reduction in the concentration or activity of enzymes involved in metabolism.
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Affiliation(s)
- Xian Chen
- Institute of Plant Protection, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Cheng Sun
- School of Medicine, Yangzhou Polytechnic College, Yangzhou, China
| | - Pedro Laborda
- Institute of Plant Protection, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yancun Zhao
- Institute of Plant Protection, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Ian Palmer
- Department of Biological Sciences, University of South Carolina, Columbia, SC, United States
| | - Zheng Qing Fu
- Department of Biological Sciences, University of South Carolina, Columbia, SC, United States
| | - Jingping Qiu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
| | - Fengquan Liu
- Institute of Plant Protection, Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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45
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Synthesis of an oleic acid based pH-responsive lipid and its application in nanodelivery of vancomycin. Int J Pharm 2018; 550:149-159. [DOI: 10.1016/j.ijpharm.2018.08.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 08/06/2018] [Accepted: 08/16/2018] [Indexed: 12/20/2022]
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Roohbakhsh A, Shamsizadeh A, Hayes A, Reiter RJ, Karimi G. Melatonin as an endogenous regulator of diseases: The role of autophagy. Pharmacol Res 2018; 133:265-276. [DOI: 10.1016/j.phrs.2018.01.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/17/2017] [Accepted: 01/29/2018] [Indexed: 12/22/2022]
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47
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Percival SL, Chen R, Mayer D, Salisbury AM. Mode of action of poloxamer-based surfactants in wound care and efficacy on biofilms. Int Wound J 2018; 15:749-755. [PMID: 29869367 DOI: 10.1111/iwj.12922] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 02/21/2018] [Accepted: 02/26/2018] [Indexed: 12/19/2022] Open
Abstract
Surfactants are widely used as detergents, emulsifiers, wetting agents, foaming agents, and dispersants in both the food and oil industry. Their use in a clinical setting is also common, particularly in wound care. Complicated or chronic wounds show clinical signs of delayed healing, persistent inflammation, and the production of non-viable tissue. These types of wounds also present challenges such as infection and potentially house antimicrobial-tolerant biofilms. The use of wound cleansers to aid cleaning and debridement of the wound is essential. A large proportion of skin and wound cleansers contain surfactants but there is only a small amount of data that shows the effectiveness of them in the enhancement of wound closure. This review paper aims to explore the available literature surrounding the use and mode of action of surfactants in wound healing, in particular Poloxamer 188 (Pluronic F-68) and Poloxamer 407 (Pluronic F-127), and also uncover the potential mechanisms behind the enhancement of wound healing and comparison to other surfactants used in wound care. Furthermore, the presence of a microbial biofilm in the wound is a significant factor in delayed wound healing. Therefore, the effect of clinically used surfactants on biofilms will be discussed, with emphasis on poloxamer-based surfactants.
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Affiliation(s)
- Steven L Percival
- Centre of Excellence in Biofilm Science and Technologies (CEBST), 5D Health Protection Group Ltd, Liverpool Bio-Innovation Hub, Liverpool, UK
| | - Rui Chen
- Centre of Excellence in Biofilm Science and Technologies (CEBST), 5D Health Protection Group Ltd, Liverpool Bio-Innovation Hub, Liverpool, UK
| | - Dieter Mayer
- Department of Surgery, HFR Fribourg - Cantonal Hospital, Fribourg, Switzerland
| | - Anne-Marie Salisbury
- Centre of Excellence in Biofilm Science and Technologies (CEBST), 5D Health Protection Group Ltd, Liverpool Bio-Innovation Hub, Liverpool, UK
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Zhang W, Ning C, Xu W, Hu H, Li M, Zhao G, Ding J, Chen X. Precision-guided long-acting analgesia by Gel-immobilized bupivacaine-loaded microsphere. Theranostics 2018; 8:3331-3347. [PMID: 29930733 PMCID: PMC6010997 DOI: 10.7150/thno.25276] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 04/08/2018] [Indexed: 12/17/2022] Open
Abstract
Peripheral nerve blockade (PNB) is a conventional strategy for the management of acute postoperative pain. However, the short duration of the associated analgesia and the potential systemic toxicity due to the low molecular weights of local anesthetics limit their application. Methods: An in situ forming injectable Gel-microsphere (Gel-MS) system consisting of PLGA-PEG-PLGA Gel (Gel) and Gel-immobilized bupivacaine-loaded microsphere (MS/BUP) was prepared for precision-guided long-acting analgesia. A series of in vitro characterizations, such as scanning electron microscopy, rheology analysis, confocal laser scanning microscopy, drug release, and erosion and degradation, were carried out. After that, the in vivo analgesia effect of the Gel-MS system, the immobilization effect of Gel on the MS, and biocompatibility of the system were evaluated using a sciatic nerve block model. Results: The BUP release from the Gel-MS system was regulated by both the inner MS and the outer Gel matrix, demonstrating sustained BUP release in vitro for several days without an initial burst release. More importantly, incorporation of the Gel immobilized the MS and hindered the diffusion of MS from the injection site because of its in situ property, which contributed to a high local drug concentration and prevented systemic side effects. In vivo, a single injection of Gel-MS/BUP allowed rats to maintain sensory and motor blockade significantly longer than treatment with MS/BUP (P < 0.01) or BUP-loaded Gel (Gel-BUP, P < 0.01). Histopathological results demonstrated the excellent biodegradability and biocompatibility of the Gel-MS system without neurotoxicity. Conclusion: This precision-guided long-acting analgesia, which provides an in situ and sustained release of BUP, is a promising strategy for long-acting analgesia, and could represent a potential alternative for clinical pain management.
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Affiliation(s)
- Wenjing Zhang
- Department of Anesthesia, China-Japan Union Hospital of Jilin University, Changchun 130033, P. R. China
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Cong Ning
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- Department of Spine Surgery, The First Hospital of Jilin University, Changchun 130021, P. R. China
| | - Weiguo Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Hanze Hu
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, United States
| | - Mingqiang Li
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, United States
- Guangdong Provincial Key Laboratory of Liver Disease, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, P. R. China
| | - Guoqing Zhao
- Department of Anesthesia, China-Japan Union Hospital of Jilin University, Changchun 130033, P. R. China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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Pelegrino MT, De Araujo Lima B, Do Nascimento MHM, Lombello CB, Brocchi M, Seabra AB. Biocompatible and Antibacterial Nitric Oxide-Releasing Pluronic F-127/Chitosan Hydrogel for Topical Applications. Polymers (Basel) 2018; 10:E452. [PMID: 30966487 PMCID: PMC6415216 DOI: 10.3390/polym10040452] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/08/2018] [Accepted: 04/16/2018] [Indexed: 01/08/2023] Open
Abstract
Nitric oxide (NO) is involved in physiological processes, including vasodilatation, wound healing and antibacterial activities. As NO is a free radical, designing drugs to generate therapeutic amounts of NO in controlled spatial and time manners is still a challenge. In this study, the NO donor S-nitrosoglutathione (GSNO) was incorporated into the thermoresponsive Pluronic F-127 (PL)-chitosan (CS) hydrogel, with an easy and economically feasible methodology. CS is a polysaccharide with known antimicrobial properties. Scanning electron microscopy, rheology and differential scanning calorimetry techniques were used for hydrogel characterization. The results demonstrated that the hydrogel has a smooth surface, thermoresponsive behavior and good mechanical stability. The kinetics of NO release and GSNO diffusion from GSNO-containing PL/CS hydrogel demonstrated a sustained NO/GSNO release, in concentrations suitable for biomedical applications. The GSNO-PL/CS hydrogel demonstrated a concentration-dependent toxicity to Vero cells, and antimicrobial activity to Pseudomonas aeruginosa (minimum inhibitory concentration and minimum bactericidal concentration values of 0.5 µg·mL-1 of hydrogel, which corresponds to 1 mmol·L-1 of GSNO). Interestingly, the concentration range in which the NO-releasing hydrogel demonstrated an antibacterial effect was not found to be toxic to the Vero mammalian cell. Thus, the GSNO-PL/CS hydrogel is a suitable biomaterial for topical NO delivery applications.
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Affiliation(s)
- Milena T Pelegrino
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
| | - Bruna De Araujo Lima
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Mônica H M Do Nascimento
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Christiane B Lombello
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Center for Engineering, Modeling and Applied Social Science, Universidade Federal do ABC, Alameda da Universidade sem numero, São Bernardo do Campo, SP, CEP 09606-045, Brazil.
| | - Marcelo Brocchi
- Tropical Disease Laboratory, Department of Genetics, Evolution, Microbiology and Immunology, Institute of Biology, University of Campinas, Campinas, SP 13083-862, Brazil.
| | - Amedea B Seabra
- Center for Natural and Human Sciences, Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP, CEP 09210-580, Brazil.
- Nanomedicine Research Unit (NANOMED), Universidade Federal do ABC, Av. dos Estados 5001, Santo André, SP 09210-580, Brazil.
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50
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