1
|
Candido JDC, Conceição NA, Moreira APD, Calçada LA, Araújo LS, Santos RA, Middea A, Luchese R, Prudencio ER, Castro RN, McGuinness GB, Oliveira RN. Alginate hydrogels incorporating neomycin or propolis as potential dressings for diabetic ulcers: Structure, swelling, and antimicrobial barrier properties. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Natália Alves Conceição
- Department of Chemical Engineering/DEQFederal Rural University of Rio de Janeiro Seropédica Brazil
| | - Ana Paula Duarte Moreira
- Program of Materials and Metallurgy Engineering/COPPEFederal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Luís Américo Calçada
- Postgraduate Program of Chemical Engineering/DEQFederal Rural University of Rio de Janeiro Seropédica Brazil
| | - Leonardo Sales Araújo
- Program of Materials and Metallurgy Engineering/COPPEFederal University of Rio de Janeiro Rio de Janeiro Brazil
| | - Robson Araújo Santos
- Program of Materials and Metallurgy Engineering/COPPEFederal University of Rio de Janeiro Rio de Janeiro Brazil
| | | | - Rosa Luchese
- Department of Food Engineering/DTAFederal Rural University of Rio de Janeiro Seropédica Brazil
| | | | - Rosane Nora Castro
- Department of Chemistry/DEQUIMFederal Rural University of Rio de Janeiro Seropédica Brazil
| | - Garrett Brian McGuinness
- Centre for Medical Engineering ResearchSchool of Mechanical and Manufacturing Engineering, DCU Dublin Ireland
| | - Renata Nunes Oliveira
- Postgraduate Program of Chemical Engineering/DEQFederal Rural University of Rio de Janeiro Seropédica Brazil
| |
Collapse
|
2
|
Pawar HV, Tetteh J, Debrah P, Boateng JS. Comparison of in vitro antibacterial activity of streptomycin-diclofenac loaded composite biomaterial dressings with commercial silver based antimicrobial wound dressings. Int J Biol Macromol 2018; 121:191-199. [PMID: 30300694 DOI: 10.1016/j.ijbiomac.2018.10.023] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 09/21/2018] [Accepted: 10/05/2018] [Indexed: 11/17/2022]
Abstract
Infected chronic wounds heal slowly, exhibiting prolonged inflammation, biofilm formation, bacterial resistance, high exudate and ineffectiveness of systemic antimicrobials. Composite dressings (films and wafers) comprising polyox/carrageenan (POL-CAR) and polyox/sodium alginate (POL-SA), loaded with diclofenac (DLF) and streptomycin (STP) were formulated and tested for antibacterial activity against 2 × 105 CFU/mL of Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus representing infected chronic wounds and compared with marketed silver dressings. Minimum inhibitory concentration (MIC) showed higher values for DLF than STP due to non-conventional antibacterial activity of DLF. The DLF and STP loaded dressings were highly effective against E. coli, P. aeruginosa and S. aureus. POL-SA dressings were more effective against the three types of bacteria compared to POL-CAR formulations, while the DLF and STP loaded dressings showed greater antibacterial activity than the silver-based dressings. The films, showed greater antibacterial efficacy than both wafers and silver dressings. STP and DLF can act synergistically not only to kill the bacteria but also prevent their resistance and biofilm formation compared to silver dressings, while reducing chronic inflammation associated with infection.
Collapse
Affiliation(s)
- Harshavardhan V Pawar
- Department of Pharmaceutical, Chemical & Environmental Sciences, School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, ME4 4TB Kent, UK
| | - John Tetteh
- Department of Pharmaceutical, Chemical & Environmental Sciences, School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, ME4 4TB Kent, UK
| | - Philip Debrah
- Department of Pharmaceutics and Microbiology, School of Pharmacy, College of Health Sciences, University of Ghana, Legon, P.O. Box LG43, Legon, Accra, Ghana
| | - Joshua S Boateng
- Department of Pharmaceutical, Chemical & Environmental Sciences, School of Science, University of Greenwich at Medway, Central Avenue, Chatham Maritime, ME4 4TB Kent, UK.
| |
Collapse
|
3
|
Ciprofloxacin-loaded calcium alginate wafers prepared by freeze-drying technique for potential healing of chronic diabetic foot ulcers. Drug Deliv Transl Res 2017; 8:1751-1768. [DOI: 10.1007/s13346-017-0445-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
4
|
Leelakanok N, Geary S, Salem A. Fabrication and Use of Poly(d,l-lactide-co-glycolide)-Based Formulations Designed for Modified Release of 5-Fluorouracil. J Pharm Sci 2017; 107:513-528. [PMID: 29045885 DOI: 10.1016/j.xphs.2017.10.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 12/14/2022]
Abstract
5-fluorouracil (5-FU) is a chemotherapeutic agent that has been used for the treatment of a variety of malignancies since its initial introduction to the clinic in 1957. Owing to its short biological half-life, multiple dosings are generally required to maintain effective 5-FU plasma concentrations throughout the therapeutic period. Clinical studies have shown that continuous 5-FU administration is generally superior to bolus injection as exhibited by lower toxicities and increased therapeutic efficacy. Optimal therapeutic efficacy, however, is often compromised by the limiting therapeutic index. Whilst oral formulations are also used, these suffer from the drawbacks of variable bioavailability and first-pass metabolism. As a result, sustained release formulations of 5-FU have been investigated in an effort to mimic the kinetics of continuous infusion particularly for situations where local delivery is considered appropriate. The biocompatible, biodegradable, and highly tunable synthetic polymer, poly(d,l-lactide-co-glycolide) (PLGA), is widely used as a vector for sustained drug delivery, however, issues such as insufficient loading and inappropriate burst release kinetics have dogged progress into the clinic for small hydrophilic drugs such as 5-FU. This review provides introductory information about the mechanism of action, pharmacokinetic and physicochemical properties, and clinical use of 5-FU that have contributed to the development of PLGA-based 5-FU release platforms. In addition, this review provides information on fabrication methods used for a range of 5-FU-loaded PLGA formulations and discusses factors affecting the release kinetics of 5-FU as well as the in vitro and in vivo antitumor or antiproliferative efficacy of these platforms.
Collapse
Affiliation(s)
- Nattawut Leelakanok
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, Iowa City, Iowa 52242
| | - Sean Geary
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, Iowa City, Iowa 52242
| | - Aliasger Salem
- Department of Pharmaceutical Sciences and Experimental Therapeutics, College of Pharmacy, Iowa City, Iowa 52242.
| |
Collapse
|
5
|
Avachat AM, Takudage PJ. Design and characterization of multifaceted lyophilized liposomal wafers with promising wound healing potential. J Liposome Res 2017; 28:193-208. [DOI: 10.1080/08982104.2017.1335319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Amelia M. Avachat
- Department of Pharmaceutics, Sinhgad College of Pharmacy, Pune, India
| | - Pooja J. Takudage
- Department of Pharmaceutics, Sinhgad College of Pharmacy, Pune, India
| |
Collapse
|
6
|
Boateng J, Catanzano O. Advanced Therapeutic Dressings for Effective Wound Healing--A Review. J Pharm Sci 2015; 104:3653-3680. [PMID: 26308473 DOI: 10.1002/jps.24610] [Citation(s) in RCA: 487] [Impact Index Per Article: 54.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 12/15/2022]
Abstract
Advanced therapeutic dressings that take active part in wound healing to achieve rapid and complete healing of chronic wounds is of current research interest. There is a desire for novel strategies to achieve expeditious wound healing because of the enormous financial burden worldwide. This paper reviews the current state of wound healing and wound management products, with emphasis on the demand for more advanced forms of wound therapy and some of the current challenges and driving forces behind this demand. The paper reviews information mainly from peer-reviewed literature and other publicly available sources such as the US FDA. A major focus is the treatment of chronic wounds including amputations, diabetic and leg ulcers, pressure sores, and surgical and traumatic wounds (e.g., accidents and burns) where patient immunity is low and the risk of infections and complications are high. The main dressings include medicated moist dressings, tissue-engineered substitutes, biomaterials-based biological dressings, biological and naturally derived dressings, medicated sutures, and various combinations of the above classes. Finally, the review briefly discusses possible prospects of advanced wound healing including some of the emerging physical approaches such as hyperbaric oxygen, negative pressure wound therapy and laser wound healing, in routine clinical care.
Collapse
Affiliation(s)
- Joshua Boateng
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK.
| | - Ovidio Catanzano
- Department of Pharmaceutical, Chemical and Environmental Sciences, Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK
| |
Collapse
|
7
|
Sarheed O, Abdul Rasool BK, Abu-Gharbieh E, Aziz US. An investigation and characterization on alginate hydogel dressing loaded with metronidazole prepared by combined inotropic gelation and freeze-thawing cycles for controlled release. AAPS PharmSciTech 2015; 16:601-9. [PMID: 25425388 DOI: 10.1208/s12249-014-0237-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 10/09/2014] [Indexed: 11/30/2022] Open
Abstract
The purpose of this study was to investigate the effect of combined Ca(2+) cross-linking and freeze-thawing cycle method on metronidazole (model drug) drug release and prepare a wound film dressing with improved swelling property. The hydrogel films were prepared with sodium alginate (SA) using the freeze-thawing method alone or in combination with ionotropic gelation with CaCl2. The gel properties such as morphology, swelling, film thickness, and content uniformity and in vitro dissolution profiles using Franz diffusion cell were investigated. The cross-linking process was confirmed by differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy. In vitro protein adsorption test, in vivo wound-healing test, and histopathology were also performed. The hydrogel (F2) composed of 6% sodium alginate and 1% metronidazole prepared by combined Ca(2+) cross-linking and freeze-thawing cycles showed good swelling. This will help to provide moist environment at the wound site. With the in vivo wound-healing and histological studies, F2 was found to improve the wound-healing effect compared with the hydrogel without the drug, and the conventional product.
Collapse
|
8
|
Pawar HV, Boateng JS, Ayensu I, Tetteh J. Multifunctional medicated lyophilised wafer dressing for effective chronic wound healing. J Pharm Sci 2014; 103:1720-33. [PMID: 24700434 DOI: 10.1002/jps.23968] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 03/07/2014] [Accepted: 03/17/2014] [Indexed: 11/10/2022]
Abstract
Wafers combining weight ratios of Polyox with carrageenan (75/25) or sodium alginate (50/50) containing streptomycin and diclofenac were prepared to improve chronic wound healing. Gels were freeze-dried using a lyophilisation cycle incorporating an annealing step. Wafers were characterised for morphology, mechanical and in vitro functional (swelling, adhesion, drug release in the presence of simulated wound fluid) characteristics. Both blank (BLK) and drug-loaded (DL) wafers were soft, flexible, elegant in appearance and non-brittle in nature. Annealing helped to improve porous nature of wafers but was affected by the addition of drugs. Mechanical characterisation demonstrated that the wafers were strong enough to withstand normal stresses but also flexible to prevent damage to newly formed skin tissue. Differences in swelling, adhesion and drug release characteristics could be attributed to differences in pore size and sodium sulphate formed because of the salt forms of the two drugs. BLK wafers showed relatively higher swelling and adhesion than DL wafers with the latter showing controlled release of streptomycin and diclofenac. The optimised dressing has the potential to reduce bacterial infection and can also help to reduce swelling and pain associated with injury due to the anti-inflammatory action of diclofenac and help to achieve more rapid wound healing.
Collapse
Affiliation(s)
- Harshavardhan V Pawar
- Department of Pharmaceutical, Chemical & Environmental Sciences, Faculty of Engineering and Science, University of Greenwich at Medway Central Avenue, Chatham Maritime, ME4 4TB, Kent, UK
| | | | | | | |
Collapse
|
9
|
Ng SF, Jumaat N. Carboxymethyl cellulose wafers containing antimicrobials: a modern drug delivery system for wound infections. Eur J Pharm Sci 2013; 51:173-9. [PMID: 24076463 DOI: 10.1016/j.ejps.2013.09.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 09/19/2013] [Accepted: 09/19/2013] [Indexed: 11/19/2022]
Abstract
Lyophilised wafers have been shown to have potential as a modern dressing for mucosal wound healing. The wafer absorbs wound exudates and transforms into a gel, thus providing a moist environment which is essential for wound healing. The objective of this study was to develop a carboxymethyl cellulose wafer containing antimicrobials to promote wound healing and treat wound infection. The pre-formulation studies began with four polymers, sodium carboxymethyl cellulose (NaCMC), methylcellulose (MC), sodium alginate and xanthan gum, but only NaCMC and MC were chosen for further investigation. The wafers were characterised by physical assessments, solvent loss, microscopic examination, swelling and hydration properties, drug content uniformity, drug release and efficacy of antimicrobials. Three of the antimicrobials, neomycin trisulphate salt hydrate, sulphacetamide sodium and silver nitrate, were selected as model drugs. Among the formulations, NaCMC wafer containing neomycin trisulphate exhibited the most desirable wound dressing characteristics (i.e., flexibility, sponginess, uniform wafer texture, high content drug uniformity) with the highest in vitro drug release and the greatest inhibition against both Gram positive and Gram negative bacteria. In conclusion, we successfully developed a NaCMC lyophilised wafer containing antimicrobials, and this formulation has potential for use in mucosal wounds infected with bacteria.
Collapse
Affiliation(s)
- Shiow-Fern Ng
- Centre for Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
| | | |
Collapse
|
10
|
Labovitiadi O, O’Driscoll NH, Lamb AJ, Matthews KH. Rheological properties of gamma-irradiated antimicrobial wafers and in vitro efficacy against Pseudomonas aeruginosa. Int J Pharm 2013; 453:462-72. [DOI: 10.1016/j.ijpharm.2013.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 06/04/2013] [Accepted: 06/07/2013] [Indexed: 10/26/2022]
|
11
|
O’Driscoll NH, Labovitiadi O, Cushnie TPT, Matthews KH, Lamb AJ. Potassium Loss from Chlorhexidine-Treated Bacterial Pathogens is Time- and Concentration-Dependent and Variable Between Species. Curr Microbiol 2013; 68:6-11. [DOI: 10.1007/s00284-013-0433-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 06/30/2013] [Indexed: 11/29/2022]
|
12
|
Labovitiadi O, Lamb AJ, Matthews KH. Lyophilised wafers as vehicles for the topical release of chlorhexidine digluconate—Release kinetics and efficacy against Pseudomonas aeruginosa. Int J Pharm 2012; 439:157-64. [DOI: 10.1016/j.ijpharm.2012.10.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 09/21/2012] [Accepted: 10/08/2012] [Indexed: 10/27/2022]
|