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Toscanini MA, Limeres MJ, Garrido AV, Cagel M, Bernabeu E, Moretton MA, Chiappetta DA, Cuestas ML. Polymeric micelles and nanomedicines: Shaping the future of next generation therapeutic strategies for infectious diseases. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102927] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kim BO, Jang HJ, Chung IY, Bae HW, Kim ES, Cho YH. Nitrate Respiration Promotes Polymyxin B Resistance in Pseudomonas aeruginosa. Antioxid Redox Signal 2021; 34:442-451. [PMID: 32370551 DOI: 10.1089/ars.2019.7924] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Aims: Polymyxin B (PMB) is known to require reactive oxygen species (ROS) for its bactericidal activity, but the mechanism of PMB resistance in various Pseudomonas aeruginosa strains has been poorly understood. This study examined the role of nitrate respiration (NR) of some P. aeruginosa strains in the PMB resistance. Results: We observed that the minimum inhibitory concentration (MIC) value of PMB against P. aeruginosa PA14 was eightfold reduced (from 2.0 to 0.25 μg/mL) by agitation, but not against P. aeruginosa PAO1 (from 2.0 to 1.0 μg/mL). Transcriptomic and phenotypic analyses using both strains and their NR mutants revealed that the higher NR in PAO1 than in PA14 accounted for the higher MIC value (i.e., PMB resistance) of PAO1, which was sufficient to compromise the antibacterial activity of PMB in Drosophila infections. We also confirmed the contribution of the NR to the PMB resistance is independent of the major catalase (KatA), suggesting that the NR might affect the ROS generation rather than the ROS disintegration. Furthermore, this PMB resistance was relatively common among clinical P. aeruginosa isolates and correlated with higher NR in those strains. Innovation and Conclusion: These results suggest P. aeruginosa strains could display intrinsic resistance to antibiotics in clinical settings and that NR is a crucial factor in the intrinsic antibiotic resistance, and also provide an insight into another key target for successful antibiotic treatment of P. aeruginosa infections. Antioxid. Redox Signal. 34, 442-451.
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Affiliation(s)
- Bi-O Kim
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
| | - Hye-Jeong Jang
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
| | - In-Young Chung
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
| | - Hee-Won Bae
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
| | - Eun Sook Kim
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
| | - You-Hee Cho
- Department of Pharmacy, College of Pharmacy and Institute of Pharmaceutical Sciences, CHA University, Gyeonggi-do, Korea
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Cardoso P, Glossop H, Meikle TG, Aburto-Medina A, Conn CE, Sarojini V, Valery C. Molecular engineering of antimicrobial peptides: microbial targets, peptide motifs and translation opportunities. Biophys Rev 2021; 13:35-69. [PMID: 33495702 PMCID: PMC7817352 DOI: 10.1007/s12551-021-00784-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
The global public health threat of antimicrobial resistance has led the scientific community to highly engage into research on alternative strategies to the traditional small molecule therapeutics. Here, we review one of the most popular alternatives amongst basic and applied research scientists, synthetic antimicrobial peptides. The ease of peptide chemical synthesis combined with emerging engineering principles and potent broad-spectrum activity, including against multidrug-resistant strains, has motivated intense scientific focus on these compounds for the past decade. This global effort has resulted in significant advances in our understanding of peptide antimicrobial activity at the molecular scale. Recent evidence of molecular targets other than the microbial lipid membrane, and efforts towards consensus antimicrobial peptide motifs, have supported the rise of molecular engineering approaches and design tools, including machine learning. Beyond molecular concepts, supramolecular chemistry has been lately added to the debate; and helped unravel the impact of peptide self-assembly on activity, including on biofilms and secondary targets, while providing new directions in pharmaceutical formulation through taking advantage of peptide self-assembled nanostructures. We argue that these basic research advances constitute a solid basis for promising industry translation of rationally designed synthetic peptide antimicrobials, not only as novel drugs against multidrug-resistant strains but also as components of emerging antimicrobial biomaterials. This perspective is supported by recent developments of innovative peptide-based and peptide-carrier nanobiomaterials that we also review.
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Affiliation(s)
- Priscila Cardoso
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia.,School of Science, RMIT University, Melbourne, Australia
| | - Hugh Glossop
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | | | | | | | | | - Celine Valery
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
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Double membrane based on lidocaine-coated polymyxin-alginate nanoparticles for wound healing: In vitro characterization and in vivo tissue repair. Int J Pharm 2020; 591:120001. [DOI: 10.1016/j.ijpharm.2020.120001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 10/15/2020] [Accepted: 10/17/2020] [Indexed: 11/21/2022]
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Keshavarz A, Kadry H, Alobaida A, Ahsan F. Newer approaches and novel drugs for inhalational therapy for pulmonary arterial hypertension. Expert Opin Drug Deliv 2020; 17:439-461. [PMID: 32070157 DOI: 10.1080/17425247.2020.1729119] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Pulmonary arterial hypertension (PAH) is a progressive disease characterized by remodeling of small pulmonary arteries leading to increased pulmonary arterial pressure. Existing treatments acts to normalize vascular tone via three signaling pathways: the prostacyclin, the endothelin-1, and the nitric oxide. Although over the past 20 years, there has been considerable progress in terms of treatments for PAH, the disease still remains incurable with a disappointing prognosis.Areas covered: This review summarizes the pathophysiology of PAH, the advantages and disadvantages of the inhalation route, and assess the relative advantages various inhaled therapies for PAH. The recent studies concerning the development of controlled-release drug delivery systems loaded with available anti-PAH drugs have also been summarized.Expert opinion: The main obstacles of current pharmacotherapies of PAH are their short half-life, stability, and formulations, resulting in reducing the efficacy and increasing systemic side effects and unknown pathogenesis of PAH. The pulmonary route has been proposed for delivering anti-PAH drugs to overcome the shortcomings. However, the application of approved inhaled anti-PAH drugs is limited. Inhalational delivery of controlled-release nanoformulations can overcome these restrictions. Extensive studies are required to develop safe and effective drug delivery systems for PAH patients.
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Affiliation(s)
- Ali Keshavarz
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Hossam Kadry
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Ahmed Alobaida
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Fakhrul Ahsan
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
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Borro BC, Bohr A, Bucciarelli S, Boetker JP, Foged C, Rantanen J, Malmsten M. Microfluidics-based self-assembly of peptide-loaded microgels: Effect of three dimensional (3D) printed micromixer design. J Colloid Interface Sci 2019; 538:559-568. [DOI: 10.1016/j.jcis.2018.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/27/2018] [Accepted: 12/03/2018] [Indexed: 12/12/2022]
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7
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Biswaro LS, da Costa Sousa MG, Rezende TMB, Dias SC, Franco OL. Antimicrobial Peptides and Nanotechnology, Recent Advances and Challenges. Front Microbiol 2018; 9:855. [PMID: 29867793 PMCID: PMC5953333 DOI: 10.3389/fmicb.2018.00855] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 04/13/2018] [Indexed: 12/18/2022] Open
Abstract
Antimicrobial peptides are sequences of amino acids, which present activity against microorganisms. These peptides were discovered over 70 years ago, and are abundant in nature from soil bacteria, insects, amphibians to mammals and plants. They vary in amino acids number, the distance between amino acids within individual peptide structure, net charge, solubility and other physical chemical properties as well as differ in mechanism of action. These peptides may provide an alternative treatment to conventional antibiotics, which encounter resistance such as the peptide nisin applied in treating methicillin resistant Staphylococcus aureus (MRSA) or may behave synergistically with known antibiotics against parasites for instance, nisin Z when used in synergy with ampicillin reported better activity against Pseudomonas fluorescens than when the antibiotic was alone. AMPs are known to be active against viruses, bacteria, fungi and protozoans. Nanotechnology is an arena which explores the synthesis, characterization and application of an array of delivery systems at a one billionth of meter scale. Such systems are implemented to deliver drugs, proteins, vaccines, and peptides. The role of nanotechnology in delivering AMPs is still at its early development stage. There are challenges of incorporating AMPs into drug delivery system. This review intends to explore in depth, the role of nanotechnology in delivering AMPs as well as presenting the current advances and accompanying challenges of the technology.
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Affiliation(s)
- Lubhandwa S Biswaro
- Center of Proteomic and Biochemical Analysis, Genomic Sciences and Biotechnology Program, Catholic University of Brasília, Brasília, Brazil
| | - Mauricio G da Costa Sousa
- Center of Proteomic and Biochemical Analysis, Genomic Sciences and Biotechnology Program, Catholic University of Brasília, Brasília, Brazil
| | - Taia M B Rezende
- Center of Proteomic and Biochemical Analysis, Genomic Sciences and Biotechnology Program, Catholic University of Brasília, Brasília, Brazil.,Catholic University of Brasília, Brasília, Brazil.,Health Science Program, University of Brasília, Brasília, Brazil
| | - Simoni C Dias
- Center of Proteomic and Biochemical Analysis, Genomic Sciences and Biotechnology Program, Catholic University of Brasília, Brasília, Brazil
| | - Octavio L Franco
- Center of Proteomic and Biochemical Analysis, Genomic Sciences and Biotechnology Program, Catholic University of Brasília, Brasília, Brazil.,S-Inova Biotech, Biotechnology Program, Dom Bosco Catholic University, Campo Grande, Brazil
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8
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Kozic M, Fox SJ, Thomas JM, Verma CS, Rigden DJ. Large scale ab initio modeling of structurally uncharacterized antimicrobial peptides reveals known and novel folds. Proteins 2018; 86:548-565. [DOI: 10.1002/prot.25473] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/16/2018] [Accepted: 01/29/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Mara Kozic
- Institute of Integrative Biology, University of Liverpool; Liverpool L69 7ZB U.K
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute; Singapore
| | - Stephen J. Fox
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute; Singapore
| | - Jens M. Thomas
- Institute of Integrative Biology, University of Liverpool; Liverpool L69 7ZB U.K
| | - Chandra S. Verma
- Agency for Science, Technology and Research (A*STAR), Bioinformatics Institute; Singapore
- Department of Biological Sciences; National University of Singapore; Singapore
- School of Biological Sciences; Nanyang Technological University; Singapore
| | - Daniel J. Rigden
- Institute of Integrative Biology, University of Liverpool; Liverpool L69 7ZB U.K
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Severino P, Silveira EF, Loureiro K, Chaud MV, Antonini D, Lancellotti M, Sarmento VH, da Silva CF, Santana MHA, Souto EB. Antimicrobial activity of polymyxin-loaded solid lipid nanoparticles (PLX-SLN): Characterization of physicochemical properties and in vitro efficacy. Eur J Pharm Sci 2017; 106:177-184. [PMID: 28576561 DOI: 10.1016/j.ejps.2017.05.063] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/14/2017] [Accepted: 05/30/2017] [Indexed: 01/07/2023]
Abstract
Antimicrobial resistance is a current public health concern, limiting the available therapeutic options used for the treatment of common bacterial infections. The development of new drug entities via biotechnological processes is however expensive and time-consuming. Therefore, old antimicrobial agents have been recovered for clinical use. An example of these drugs is polymyxin, which is known for its serious adverse side effects, such as nephrotoxicity, neurotoxicity and promotion of skin pigmentation. To overcome these limitations, the use of biodegradable nanoparticles has been proposed to allow site-specific targeting, increasing the drug's bioavailability and decreasing its side effects. The aim of this work was the development of an optimized pharmaceutical formulation composed of solid lipid nanoparticles (SLN) loading polymyxin B sulphate (PLX) for the treatment of bacterial infections. The PLX-loaded SLN were produced by a double emulsion method (w/o/w), obtaining particles with a mean size of approximately 200nm, polydispersity of 0.3 and zeta potential of -30mV. The encapsulation efficiency reached values above 90% for all developed formulations. SLN remained stable for a period of 6months of storage at room temperature. The occlusive properties of the SLN was shown to be dependent on the type of lipid, while the antimicrobial properties of PLX-loaded SLN were effective against resistant strains of Pseudomonas aeruginosa. Results from the differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS) analyses confirmed the crystallinity of the inner SLN matrices, suggesting the capacity of these particles to modify the release profile of the loaded drug.
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Affiliation(s)
- Patrícia Severino
- Laboratory of Nanotechnology and Nanomedicine (LNMed), University of Tiradentes (Unit), and Institute of Technology and Research (ITP), Av. Murilo Dantas, 300, 49010-390 Aracaju, Brazil.
| | - Elisânia F Silveira
- Laboratory of Nanotechnology and Nanomedicine (LNMed), University of Tiradentes (Unit), and Institute of Technology and Research (ITP), Av. Murilo Dantas, 300, 49010-390 Aracaju, Brazil
| | - Kahynna Loureiro
- Laboratory of Nanotechnology and Nanomedicine (LNMed), University of Tiradentes (Unit), and Institute of Technology and Research (ITP), Av. Murilo Dantas, 300, 49010-390 Aracaju, Brazil
| | - Marco V Chaud
- Laboratory of Biomaterials and Nanotechnology for the Development and Evaluation of Bioactive Substances, University of Sorocaba, Rodovia, Raposo Tavares km 92.5, 18023-000 Sorocaba, São Paulo, Brazil
| | - Danilo Antonini
- Department of Chemistry, Federal University of Sergipe, 49500-000 Itabaiana, SE, Brazil
| | - Marcelo Lancellotti
- Department of Chemistry, Federal University of Sergipe, 49500-000 Itabaiana, SE, Brazil
| | - Victor Hugo Sarmento
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Diadema, Brazil
| | - Classius F da Silva
- Biochemical Department, Biology Institute, State University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Maria Helena A Santana
- Laboratory for the Development of Biotechnological Processes, School of Chemical Engineering, State University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; REQUIMTE/LAQV, Group of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.
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10
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Cabrefiga J, Montesinos E. Lysozyme enhances the bactericidal effect of BP100 peptide against Erwinia amylovora, the causal agent of fire blight of rosaceous plants. BMC Microbiol 2017; 17:39. [PMID: 28212623 PMCID: PMC5316217 DOI: 10.1186/s12866-017-0957-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/14/2017] [Indexed: 11/24/2022] Open
Abstract
Background Fire blight is an important disease affecting rosaceous plants. The causal agent is the bacteria Erwinia amylovora which is poorly controlled with the use of conventional bactericides and biopesticides. Antimicrobial peptides (AMPs) have been proposed as a new compounds suitable for plant disease control. BP100, a synthetic linear undecapeptide (KKLFKKILKYL-NH2), has been reported to be effective against E. amylovora infections. Moreover, BP100 showed bacteriolytic activity, moderate susceptibility to protease degradation and low toxicity. However, the peptide concentration required for an effective control of infections in planta is too high due to some inactivation by tissue components. This is a limitation beause of the high cost of synthesis of this compound. We expected that the combination of BP100 with lysozyme may produce a synergistic effect, enhancing its activity and reducing the effective concentration needed for fire blight control. Results The combination of a synhetic multifunctional undecapeptide (BP100) with lysozyme produces a synergistic effect. We showed a significant increase of the antimicrobial activity against E. amylovora that was associated to the increase of cell membrane damage and to the reduction of cell metabolism. Combination of BP100 with lysozyme reduced the time required to achieve cell death and the minimal inhibitory concentration (MIC), and increased the activity of BP100 in the presence of leaf extracts even when the peptide was applied at low doses. The results obtained in vitro were confirmed in leaf infection bioassays. Conclusions The combination of BP100 with lysozyme showed synergism on the bactericidal activity against E. amylovora and provide the basis for developing better formulations of antibacterial peptides for plant protection.
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Affiliation(s)
- Jordi Cabrefiga
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, 17003, Spain
| | - Emilio Montesinos
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, 17003, Spain.
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Li Y, Tang C, Zhang E, Yang L. Colistin-entrapped liposomes driven by the electrostatic interaction: Mechanism of drug loading and in vivo characterization. Int J Pharm 2016; 515:20-29. [PMID: 27713028 DOI: 10.1016/j.ijpharm.2016.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 09/16/2016] [Accepted: 10/03/2016] [Indexed: 11/19/2022]
Abstract
The potential in vivo application of liposome for polycationic colistin has been hindered by the poor entrapment efficiency (EE) due to their phospholipid membrane permeability. The objective of this study is to investigate the loading mechanism and validity of applying electrostatic attraction for the colistin entrapment and delivery in liposomes. Anionic lipids with various structures were used for colistin entrapment, and the properties of resulting liposomes (i.e. zeta-potential, EE and release rate) were highly dependent on the structure of anionic lipids. Based on consideration of intermolecular interactions, the retention of electrostatically entrapped colistin is essentially determined by the balance of interfacial hydrophobic attraction and electrostatic repulsion. The liposomal colistin showed the reduced bacterial killing rate, but did not compromise the in vitro antibacterial activity. Specially, the PEGylated liposomal colistin of sodium cholesteryl sulfate (Chol-SO4-) showed the best drug retention, resulting in the significantly increased maximum-tolerated dose, prolonged blood circulation and decreased colistin distribution in kidney after intravenous administration in mice. These results highlight the potential utility of electrostatically entrapped liposome for polycationic colistin delivery.
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Affiliation(s)
- Yang Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Chengcheng Tang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Enbo Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Li Yang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China.
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Matougui N, Boge L, Groo AC, Umerska A, Ringstad L, Bysell H, Saulnier P. Lipid-based nanoformulations for peptide delivery. Int J Pharm 2016; 502:80-97. [DOI: 10.1016/j.ijpharm.2016.02.019] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/28/2016] [Accepted: 02/13/2016] [Indexed: 01/24/2023]
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Abstract
INTRODUCTION The emergence of multidrug-resistant gram-negative bacteria has led to the increasing use of polymyxins. Nephrotoxicity and, to a lesser degree, neurotoxicity occur often during systemic polymyxin therapy. Scientific evidence regarding safety associated with polymyxins remains limited. AREAS COVERED Case reports/case series, observational studies and clinical trials assessing safety and toxicity of polymyxins were critically reviewed. EXPERT OPINION Polymyxins are drugs with a narrow therapeutic range. Nephrotoxicity is associated with both host factors and polymyxin exposure, and recent studies suggest that the relative risk of nephrotoxicity is similar for colistin and polymyxin B. Studies that have examined the safety of polymyxins have several limitations. Considering the available evidence, toxicities that may develop while on polymyxin therapy most often are mild to moderate in magnitude and reversible in nature. Strategies to minimize toxicity associated with polymyxins have evolved and include avoidance of toxic medications, careful dosing, use of critical care, therapeutic drug monitoring and development of polymyxin derivatives. However, given that polymyxin use has re-emerged in an era of increased antimicrobial resistance, the presence of other treatment modalities may be limited. Therefore, clinicians must consider overall risk to benefit ratio of continuing versus stopping polymyxin treatment and optimize minimization strategies to reduce polymyxin-induced toxicities.
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Affiliation(s)
- Theodoros Kelesidis
- a 1 University of California, David Geffen School of Medicine, Division of Infectious Diseases, Department of Medicine , Los Angeles, CA 90095, USA
| | - Matthew E Falagas
- b 2 Alfa Institute of Biomedical Sciences (AIBS) , 9 Neapoleos Street, 151 23 Marousi, Athens, Greece +30 69 46 11 00 00 ; +30 21 06 83 96 05 ; .,c 3 Tufts University School of Medicine, Department of Medicine , Boston, MA, USA
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Sadikot RT. The potential role of nano- and micro-technology in the management of critical illnesses. Adv Drug Deliv Rev 2014; 77:27-31. [PMID: 25204519 DOI: 10.1016/j.addr.2014.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 06/27/2014] [Accepted: 07/08/2014] [Indexed: 10/24/2022]
Abstract
In recent years nanomedicine has become an attractive concept for the targeted delivery of therapeutic and diagnostic compounds to injured or inflamed organs. Nanoscale drug delivery systems have the ability to improve the pharmacokinetics and increase the biodistribution of therapeutic agents to target organs, thereby resulting in improved efficacy and reduced drug toxicity. These systems are exploited for therapeutic purposes to carry the drug in the body in a controlled manner from the site of administration to the therapeutic target. The mortality in many of the critical illnesses such as sepsis and acute respiratory distress syndrome continues to remain high despite of an increased understanding of the molecular pathogenesis of these diseases. Several promising targets that have been identified as potential therapies for these devastating diseases have been limited because of difficulty with delivery systems. In particular, delivery of peptides, proteins, and miRNAs to the lung is an ongoing challenge. Hence, it is an attractive strategy to test potential targets by employing nanotechnology. Here some of the novel nanomedicine approaches that have been proposed and studied in recent years to facilitate the delivery of therapeutic agents in the setting of critical illnesses such as acute respiratory distress syndrome, sepsis and ventilator associated pneumonia are reviewed.
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Justo JA, Bosso JA. Adverse Reactions Associated with Systemic Polymyxin Therapy. Pharmacotherapy 2014; 35:28-33. [DOI: 10.1002/phar.1493] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Julie Ann Justo
- Department of Clinical Pharmacy and Outcomes Sciences; South Carolina College of Pharmacy; Columbia and Charleston South Carolina
| | - John A. Bosso
- Department of Clinical Pharmacy and Outcomes Sciences; South Carolina College of Pharmacy; Columbia and Charleston South Carolina
- Division of Infectious Diseases; Department of Medicine; Medical University of South Carolina College of Medicine; Charleston South Carolina
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Gupta N, Ibrahim HM, Ahsan F. Peptide-micelle hybrids containing fasudil for targeted delivery to the pulmonary arteries and arterioles to treat pulmonary arterial hypertension. J Pharm Sci 2014; 103:3743-3753. [PMID: 25266507 DOI: 10.1002/jps.24193] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Revised: 09/05/2014] [Accepted: 09/08/2014] [Indexed: 01/08/2023]
Abstract
This study investigates the respirability and efficacy of peptide-micelle hybrid nanoparticles as carriers for inhalational therapy of pulmonary arterial hypertension (PAH). CARSKNKDC (CAR), a cell-penetrating and lung-homing peptide, conjugated polyethylene glycol-distearoyl-phosphoethanolamine micelles containing fasudil, an investigational anti-PAH drug, were prepared by solvent evaporation method and characterized for various physicochemical properties. The pharmacokinetics and pharmacological efficacy of hybrid particles containing fasudil were evaluated in healthy rats and monocrotaline-induced PAH rats. CAR micelles containing fasudil had an entrapment efficiency of approximately 58%, showed controlled release of the drug, and were monodispersed with an average size of approximately 14 nm. Nuclear magnetic resonance scan confirmed the drug's presence in the core of peptide-micelle hybrid particles. Compared with plain micelles, CAR peptide increased the cellular uptake by approximately 1.7-fold and extended the drug half-life by approximately fivefold. The formulations were more prone to accumulate in the pulmonary vasculature than in the peripheral blood, which is evident from the ratio of the extent of reduction of pulmonary and systemic arterial pressures. On the whole, this study demonstrates that peptide-polymer hybrid micelles can serve as inhalational carriers for PAH therapy.
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Affiliation(s)
- Nilesh Gupta
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center 1300 Coulter Drive, Amarillo, Texas 79106
| | - Hany M Ibrahim
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center 1300 Coulter Drive, Amarillo, Texas 79106; Department of Pharmaceutics and Industrial Pharmacy, Faculty of PharmacyAl-Azhar University, Cairo, Egypt
| | - Fakhrul Ahsan
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center 1300 Coulter Drive, Amarillo, Texas 79106.
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Williams RL, Lim SB, Onyuksel H, Marucha PT. Sterically Stabilized Phospholipid Micelles Reduce Activity of a Candidate Antimicrobial Wound Healing Adjunct. Int J Pept Res Ther 2012. [DOI: 10.1007/s10989-012-9292-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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