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Ndlovu SP, Motaung KSCM, Adeyemi SA, Ubanako P, Ngema L, Fonkui TY, Ndinteh DT, Kumar P, Choonara YE, Aderibigbe BA. Sodium alginate-based nanofibers loaded with Capparis Sepiaria plant extract for wound healing. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024:1-22. [PMID: 39037962 DOI: 10.1080/09205063.2024.2381375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Accepted: 07/01/2024] [Indexed: 07/24/2024]
Abstract
Burn wounds are associated with infections, drug resistance, allergic reactions, odour, bleeding, excess exudates, and scars, requiring prolonged hospital stay. It is crucial to develop wound dressings that can effectively combat allergic reactions and drug resistance, inhibit infections, and absorb excess exudates to accelerate wound healing. To overcome the above-mentioned problems associated with burn wounds, SA/PVA/PLGA/Capparis sepiaria and SA/PVA/Capparis sepiaria nanofibers incorporated with Capparis sepiaria plant extract were prepared using an electrospinning technique. Fourier-transform infrared spectroscopy confirmed the successful incorporation of the extract into the nanofibers without any interaction between the extract and the polymers. The nanofibers displayed porous morphology and a rough surface suitable for cellular adhesion and proliferation. SA/PVA/PLGA/Capparis sepiaria and SA/PVA/Capparis sepiaria nanofibers demonstrated significant antibacterial effects against wound infection-associated bacterial strains: Pseudomonas aeruginosa, Enterococcus faecalis, Mycobaterium smegmatis, Escherichia coli, Enterobacter cloacae, Proteus vulgaris, and Staphylococcus aureus. Cytocompatibility studies using HaCaT cells revealed the non-toxicity of the nanofibers. SA/PVA/PLGA/Capparis sepiaria and SA/PVA/Capparis sepiaria nanofibers exhibited hemostatic properties, resulting from the synergistic effect of the plant extract and polymers. The in vitro scratch wound healing assay showed that the SA/PVA/Capparis sepiaria nanofiber wound-healing capability is more than the plant extract and a commercially available wound dressing. The wound-healing potential of SA/PVA/Capparis sepiaria nanofiber is attributed to the synergistic effect of the phytochemicals present in the extract, their porosity, and the ECM-mimicking structure of the nanofibers. The findings suggest that the electrospun nanofibers loaded with Capparis sepiaria extract are promising wound dressings that should be explored for burn wounds.
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Affiliation(s)
- Sindi P Ndlovu
- Department of Chemistry, University of Fort Hare, Alice, Eastern Cape, South Africa
| | | | - Samson A Adeyemi
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Philemon Ubanako
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Lindokuhle Ngema
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Thierry Y Fonkui
- Drug Discovery and Smart Molecules Research Labs, Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Derek T Ndinteh
- Drug Discovery and Smart Molecules Research Labs, Centre for Natural Product Research, Department of Chemical Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Science, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Nqoro X, Taziwa R. Polymer-Based Functional Materials Loaded with Metal-Based Nanoparticles as Potential Scaffolds for the Management of Infected Wounds. Pharmaceutics 2024; 16:155. [PMID: 38399218 PMCID: PMC10892860 DOI: 10.3390/pharmaceutics16020155] [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: 11/21/2023] [Revised: 01/18/2024] [Accepted: 01/20/2024] [Indexed: 02/25/2024] Open
Abstract
Wound infection due to bacterial invasion at the wound site is one of the primary challenges associated with delayed wound healing. Microorganisms tend to form biofilms that protect them from harm, leading to their multidrug resistance. The alarming increase in antibiotic resistance poses a threat to wound healing. Hence, the urgent need for novel wound dressing materials capable of managing bacterial infection is crucial for expediting wound recovery. There is considerable interest in polymeric wound dressings embedded with bioactive substances, such as metal-based nanoparticles, as potential solutions for treating microbially infected wounds. Metal-based nanoparticles have been widely used for the management of infected wounds due to their broad antimicrobial efficacy. This review focuses on polymer-based and bioactive wound dressings loaded with metal-based nanoparticles like silver, gold, magnesium oxide, or zinc oxide. When compared, zinc oxide-loaded dressings exhibited higher antibacterial activity against Gram-positive strains and silver nanoparticle-loaded dressings against gram-negative strains. However, wound dressings infused with both nanoparticles displayed a synergistic effect against both strains of bacteria. Furthermore, these dressings displayed antibiofilm activity and the generation of reactive oxygen species while accelerating wound closure both in vitro and in vivo.
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Affiliation(s)
- Xhamla Nqoro
- Department of Applied Science, Faculty of Natural Sciences, Walter Sisulu University, Old King William’s Town Road, Potsdam Site, East London 5200, South Africa;
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Chelminiak-Dudkiewicz D, Machacek M, Dlugaszewska J, Wujak M, Smolarkiewicz-Wyczachowski A, Bocian S, Mylkie K, Goslinski T, Marszall MP, Ziegler-Borowska M. Fabrication and characterization of new levan@CBD biocomposite sponges as potential materials in natural, non-toxic wound dressing applications. Int J Biol Macromol 2023; 253:126933. [PMID: 37722631 DOI: 10.1016/j.ijbiomac.2023.126933] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
Wound healing is a complex process; therefore, new dressings are frequently required to facilitate it. In this study, porous bacterial levan-based sponges containing cannabis oil (Lev@CBDs) were prepared and fully characterized. The sponges exhibited a suitable swelling ratio, proper water vapor transmission rate, sufficient thermal stability, desired mechanical properties, and good antioxidant and anti-inflammatory properties. The obtained Lev@CBD materials were evaluated in terms of their interaction with proteins, human serum albumin and fibrinogen, of which fibrinogen revealed the highest binding effect. Moreover, the obtained biomaterials exhibited antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa, as well as being non-hemolytic material as indicated by hemolysis tests. Furthermore, the sponges were non-toxic and compatible with L929 mouse fibroblasts and HDF cells. Most significantly, the levan sponge with the highest content of cannabis oil, in comparison to others, retained its non-hemolytic, anti-inflammatory, and antimicrobial properties after prolonged storage in a climate chamber at a constant temperature and relative humidity. The designed sponges have conclusively proven their beneficial physicochemical properties and, at the preliminary stage, biocompatibility as well, and therefore can be considered a promising material for wound dressings in future in vivo applications.
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Affiliation(s)
- Dorota Chelminiak-Dudkiewicz
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland.
| | - Miloslav Machacek
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague, Akademika Heyrovskeho 1203, 500-05 Hradec Kralove, Czech Republic
| | - Jolanta Dlugaszewska
- Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Rokietnicka 3, 60-806 Poznan, Poland
| | - Magdalena Wujak
- Department of Medicinal Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Aleksander Smolarkiewicz-Wyczachowski
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Szymon Bocian
- Department of Environmental Chemistry and Bioanalysis, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - Kinga Mylkie
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland
| | - T Goslinski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 10, 60-780 Poznan, Poland
| | - Michal P Marszall
- Department of Medicinal Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Marta Ziegler-Borowska
- Department of Biomedical Chemistry and Polymer Science, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarina 7, 87-100 Torun, Poland.
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Zintle M, Siwaphiwe P, Marthe Carine F, Thierry Youmbi F, Derek Tantoh N, Suprakas Sinha R, Blessing Atim A. Antibacterial study of carbopol-mastic gum/silver nanoparticle-based topical gels with carvacrol/neem bark extract in vitro. J Wound Care 2023; 32:clxxxi-clxxxix. [PMID: 37703219 DOI: 10.12968/jowc.2023.32.sup9a.clxxxi] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
BACKGROUND Resistance to antimicrobial drugs as a result of prolonged use usually results in clinical failure, especially in wound infections. Development of effective antimicrobial therapeutics for the management of infected wounds from a natural source with improved therapeutic effects is a pressing need. OBJECTIVE In this study, carbopol-mastic gum-based topical gels were loaded with silver nanoparticles in combination with either neem bark extract or carvacrol oil. The effect of combining silver nanoparticles with neem bark extract or the essential oil carvacrol in the prepared gel formulations was investigated on selected bacterial strains. METHOD The prepared gels were characterised by Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and ultraviolet-visible (UV-vis) spectroscopy, followed by antimicrobial analysis against selected strains of bacteria. RESULTS There was no interaction between the loaded natural extract or essential oil and the polymer used for the preparation of the formulations, which was visible from the FTIR spectra of the formulations. The gels were selective and effective against selected strains of bacteria. However, the combination of the silver nanoparticles with essential oil or natural extract in some of the gel formulations rendered the formulation ineffective against some of the bacterial strains. CONCLUSION The gel formulations were effective against bacterial strains such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Enterococcus faecalis which are the common causes of wound infections. Incorporation of silver nanoparticles into the topical formulations with natural extracts is usually a good approach to overcome antibiotic-resistant infections. However, the combination of antibacterial agents must be managed carefully.
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Affiliation(s)
- Mbese Zintle
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa
| | - Peteni Siwaphiwe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa
| | - Fotsing Marthe Carine
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Fonkui Thierry Youmbi
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Ndinteh Derek Tantoh
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Ray Suprakas Sinha
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
- DST/CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria 0001, South Africa
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Efficacy of Graphene-Based Nanocomposite Gels as a Promising Wound Healing Biomaterial. Gels 2022; 9:gels9010022. [PMID: 36661790 PMCID: PMC9858251 DOI: 10.3390/gels9010022] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/18/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
The development of biocompatible nanocomposite hydrogels with effective wound healing/microbicidal properties is needed to bring out their distinguished characteristics in clinical applications. The positive interaction between graphene oxide/reduced graphene oxide (GO/rGO) and hydrogels and aloe vera gel represents a strong strategy for the advancement of therapeutic approaches for wound healing. In this study, the synthesis, characterization, and angiogenic properties of graphene-based nanocomposite gels have been corroborated and substantiated through several in vitro and in vivo assays. In this respect, graphene oxide was synthesized by incorporating a modified Hummer's method and ascertained by Raman spectroscopy. The obtained GO and rGO were uniformly dispersed into the aloe vera gel and hydrogel, respectively, as wound healing materials. These formulations were characterized via in vitro bio-chemical techniques and were found suitable for the appropriate cell viability, attachment, and proliferation. In addition, in vivo experiments were conducted using male Wistar rats. This revealed that the GO/rGO-based gels stimulated wound contraction and re-epithelialization compared to that of the non-treatment group. From the study, it is suggested that GO/rGO-based aloe vera gel can be recommended as a promising candidate for wound healing applications.
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Meissner S, Akepogu JH, Arnet SM, Dean MZ, Ji J, Wright G, Harland B, Raos B, Svirskis D, Thakur SS. Investigating the influence of ultrasound parameters on ibuprofen drug release from hydrogels. Drug Deliv Transl Res 2022; 13:1390-1404. [PMID: 36509966 DOI: 10.1007/s13346-022-01277-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2022] [Indexed: 12/14/2022]
Abstract
Hydrogels are promising ultrasound-responsive drug delivery systems. In this study, we investigated how different ultrasound parameters affected drug release and structural integrity of self-healing hydrogels composed of alginate or poloxamers. The effects of amplitude and duty cycle at low frequency (24 kHz) ultrasound stimulation were first investigated using alginate hydrogels at 2% w/v and 2.5% w/v. Increasing ultrasound amplitude increased drug release from these gels, although high amplitudes caused large variations in release and damaged the gel structure. Increasing duty cycle also increased drug release, although a threshold was observed with the lower pulsed 50% duty cycle achieving similar levels of drug release to a continuous 100% duty cycle. Poloxamer-based hydrogels were also responsive to the optimised parameters at low frequency (24 kHz, 20% amplitude, 50% duty cycle for 30 s) and showed similar drug release results to a 2.5% w/v alginate hydrogel. Weight loss studies demonstrated that the 2% w/v alginate hydrogel underwent significant erosion following ultrasound application, whereas the 2.5% w/v alginate and the poloxamer gels were unaffected by application of the same parameters (24 kHz, 20% amplitude, 50% duty cycle for 30 s). The rheological properties of the hydrogels were also unaffected and the FTIR spectra remained unchanged after low frequency ultrasound stimulation (24 kHz, 20% amplitude, 50% duty cycle for 30 s). Finally, high-frequency ultrasound stimulation (1 MHz, 3 W.cm-2, 50% duty cycle) was also trialled; the alginate gels were less responsive to this frequency, while no statistically significant impact on drug release was observed from the poloxamer gels. This study demonstrates the importance of ultrasound parameters and polymer selection in designing ultrasound-responsive hydrogels.
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Affiliation(s)
- Svenja Meissner
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Jhansi H Akepogu
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Samantha M Arnet
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Mohammed Z Dean
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Jessie Ji
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Grace Wright
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Bruce Harland
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Brad Raos
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Darren Svirskis
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand
| | - Sachin S Thakur
- School of Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand.
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Hodel KVS, Machado BAS, Sacramento GDC, Maciel CADO, Oliveira-Junior GS, Matos BN, Gelfuso GM, Nunes SB, Barbosa JDV, Godoy ALPC. Active Potential of Bacterial Cellulose-Based Wound Dressing: Analysis of Its Potential for Dermal Lesion Treatment. Pharmaceutics 2022; 14:pharmaceutics14061222. [PMID: 35745794 PMCID: PMC9228207 DOI: 10.3390/pharmaceutics14061222] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 02/04/2023] Open
Abstract
The use of innate products for the fast and efficient promotion of healing process has been one of the biomedical sector's main bets for lesion treatment modernization process. The aim of this study was to develop and characterize bacterial cellulose-based (BC) wound dressings incorporated with green and red propolis extract (2 to 4%) and the active compounds p-coumaric acid and biochanin A (8 to 16 mg). The characterization of the nine developed samples (one control and eight active wound dressings) evidenced that the mechanics, physics, morphological, and barrier properties depended not only on the type of active principle incorporated onto the cellulosic matrix, but also on its concentration. Of note were the results found for transparency (28.59-110.62T600 mm-1), thickness (0.023-0.046 mm), swelling index (48.93-405.55%), water vapor permeability rate (7.86-38.11 g m2 day-1), elongation (99.13-262.39%), and antioxidant capacity (21.23-86.76 μg mL-1). The wound dressing based on BC and red propolis was the only one that presented antimicrobial activity. The permeation and retention test revealed that the wound dressing containing propolis extract presented the most corneal stratum when compared with viable skin. Overall, the developed wound dressing showed potential to be used for treatment against different types of dermal lesions, according to its determined proprieties.
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Affiliation(s)
- Katharine Valéria Saraiva Hodel
- SENAI Institute for Innovation in Advanced Health Systems (CIMATEC ISI SAS), SENAI/CIMATEC University Center, Salvador 41650-010, Brazil; (K.V.S.H.); (G.d.C.S.); (S.B.N.); (J.D.V.B.)
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil; (C.A.d.O.M.); (G.S.O.-J.); (A.L.P.C.G.)
| | - Bruna Aparecida Souza Machado
- SENAI Institute for Innovation in Advanced Health Systems (CIMATEC ISI SAS), SENAI/CIMATEC University Center, Salvador 41650-010, Brazil; (K.V.S.H.); (G.d.C.S.); (S.B.N.); (J.D.V.B.)
- Correspondence: ; Tel.: +55-(71)-3879-5624
| | - Giulia da Costa Sacramento
- SENAI Institute for Innovation in Advanced Health Systems (CIMATEC ISI SAS), SENAI/CIMATEC University Center, Salvador 41650-010, Brazil; (K.V.S.H.); (G.d.C.S.); (S.B.N.); (J.D.V.B.)
| | - Carine Assunção de Oliveira Maciel
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil; (C.A.d.O.M.); (G.S.O.-J.); (A.L.P.C.G.)
| | - Gessualdo Seixas Oliveira-Junior
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil; (C.A.d.O.M.); (G.S.O.-J.); (A.L.P.C.G.)
| | - Breno Noronha Matos
- Laboratory of Medicines, Food and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, Brazil; (B.N.M.); (G.M.G.)
| | - Guilherme Martins Gelfuso
- Laboratory of Medicines, Food and Cosmetics (LTMAC), University of Brasília, Brasilia 70910-900, Brazil; (B.N.M.); (G.M.G.)
| | - Silmar Baptista Nunes
- SENAI Institute for Innovation in Advanced Health Systems (CIMATEC ISI SAS), SENAI/CIMATEC University Center, Salvador 41650-010, Brazil; (K.V.S.H.); (G.d.C.S.); (S.B.N.); (J.D.V.B.)
| | - Josiane Dantas Viana Barbosa
- SENAI Institute for Innovation in Advanced Health Systems (CIMATEC ISI SAS), SENAI/CIMATEC University Center, Salvador 41650-010, Brazil; (K.V.S.H.); (G.d.C.S.); (S.B.N.); (J.D.V.B.)
| | - Ana Leonor Pardo Campos Godoy
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Bahia, Salvador 40170-115, Brazil; (C.A.d.O.M.); (G.S.O.-J.); (A.L.P.C.G.)
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Xu G, Xu N, Ren T, Chen C, Li J, Ding L, Chen Y, Chen G, Li Z, Yu Y. Multifunctional chitosan/silver/tannic acid cryogels for hemostasis and wound healing. Int J Biol Macromol 2022; 208:760-771. [PMID: 35364198 DOI: 10.1016/j.ijbiomac.2022.03.174] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/24/2022] [Accepted: 03/25/2022] [Indexed: 11/05/2022]
Abstract
Wound dressing is a kind of significant artificial materials for protecting injured tissues and promoting wound healing. However, fabrication of antibacterial wound dressing usually involves tedious procedures and toxic components. Herein, we demonstrate a multifunctional chitosan/silver/tannic acid (CS/Ag/TA) cryogel based on an economic method to block acute hemorrhage and promote wound healing. The prepared CS/Ag/TA cryogel not only performs steady stability and compressibility, but also shows good antibacterial ability for both S. aureus and E. coli. Attributing to TA molecules, the CS/Ag/TA cryogel can effectively scavenge more than 95% of free radicals, showing effective oxidation resistance. Due to the porous structure and positive charge of CS, the prepared cryogel exhibits good hemostatic capability with a hemostasis time less than 20 s. Benefitting from the good biocompatibility and cell proliferation, the CS/Ag/TA cryogel can significantly promote wound repair in the skin incision model. All the results indicated that the greenly fabricated cryogel can be widely applied in clinic for hemostasis and wound healing.
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Affiliation(s)
- Gan Xu
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China; College of Biological Science and Engineering, Fuzhou University, Fuzhou 350002, PR China
| | - Na Xu
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China
| | - Tingjie Ren
- Department of Arthrosteopedic Surgery, The First People's Hospital of Foshan & Foshan Hospital of Sun Yat-sen University, Foshan, Guangdong Province 528000, China
| | - Changyou Chen
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China
| | - Jiangfeng Li
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China
| | - Liangping Ding
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China
| | - Yang Chen
- Department of Arthrosteopedic Surgery, The First People's Hospital of Foshan & Foshan Hospital of Sun Yat-sen University, Foshan, Guangdong Province 528000, China.
| | - Guoqiang Chen
- Department of Arthrosteopedic Surgery, The First People's Hospital of Foshan & Foshan Hospital of Sun Yat-sen University, Foshan, Guangdong Province 528000, China
| | - Zheng Li
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China.
| | - Yunlong Yu
- Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, PR China.
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10
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Lori MS, Ohadi M, Estabragh MAR, Afsharipour S, Banat IM, Dehghannoudeh G. pH-sensitive polymer-based carriers as a useful approach for oral delivery of therapeutic protein: A review. Protein Pept Lett 2021; 28:1230-1237. [PMID: 34303327 DOI: 10.2174/0929866528666210720142841] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/12/2021] [Accepted: 04/20/2021] [Indexed: 11/22/2022]
Abstract
There are many proteins and enzymes in the human body, and their dysfunction can lead to disease. The use of proteins as a drug is common in various diseases such as diabetes. Proteins are hydrophilic molecules whose spatial structure is critical to their correct function. There are different ways to the administration of proteins. Protein structures are degraded by gastric acid and enzymes in the gastrointestinal tract and have a slight ability to permeation from the gastrointestinal epithelium due to their large hydrophilic nature. Therefore, their oral use has limitations. Since the oral use of drugs is one of the best and easiest routes for patients, many studies have been done to increase the stability, penetration and ultimately increase the bioavailability of proteins through oral administration. One of the studied strategies for oral delivery of protein is the use of pH-sensitive polymer-based carriers. These carriers use different pH-sensitive polymers such as eudragit®, chitosan, dextran, and alginate. The use of pH-sensitive polymer-based carriers by protecting the protein from stomach acid (low pH) and degrading enzymes, increasing permeability, and maintaining the spatial structure of the protein leads to increased bioavailability. In this review, we focus on the various polymers used to prepare pH-sensitive polymer-based carriers for the oral delivery of proteins.
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Affiliation(s)
- Maryam Shamseddini Lori
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mandana Ohadi
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | | | - Sepehr Afsharipour
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Ibrahim M Banat
- School of Biomedical Sciences, Faculty of Life & Health Sciences, University of Ulster, Coleraine BT52 1SA, Northern Ireland, United Kingdom
| | - Gholamreza Dehghannoudeh
- Department of Pharmaceutics, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
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Ngece K, Aderibigbe BA, Ndinteh DT, Fonkui YT, Kumar P. Alginate-gum acacia based sponges as potential wound dressings for exuding and bleeding wounds. Int J Biol Macromol 2021; 172:350-359. [PMID: 33453258 DOI: 10.1016/j.ijbiomac.2021.01.055] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/06/2020] [Accepted: 01/09/2021] [Indexed: 12/20/2022]
Abstract
The improper management of wound exudates can expose the wound to bacterial invasion, skin maceration etc. thereby resulting in prolonged wound healing. Biopolymers are characterized by hydrophilic functional groups which when employed for the development of wound dressings promote the wound dressings capability to absorb a high amount of wound exudates. Alginate-gum acacia sponges were prepared from a combination of biopolymers such as sodium alginate and gum acacia in varying amounts with carbopol via crosslinking with 1 and 2% CaCl2. The prepared sponges were loaded with a combination of ampicillin and norfloxacin. In vitro antibacterial analysis revealed that the antibacterial activity of the loaded antibiotics was retained and the sponges were effective against gram-positive and gram-negative bacteria. The sponges displayed rapid and high absorption capability in the range of 1022-2419% at pH 5.5 simulating wound exudates, and 2268-5042% at pH 7.4 simulating blood within a period of 1-3 h. Furthermore, the whole blood clotting studies further revealed low absorbance values when compared to the control revealing the good clotting capability of the sponges. The unique features of the sponges revealed their potential application for the management of infected, high exuding and bleeding wounds.
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Affiliation(s)
- K Ngece
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa
| | - B A Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Eastern Cape, South Africa.
| | - D T Ndinteh
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg 2028, South Africa
| | - Y T Fonkui
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, South Africa
| | - P Kumar
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
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