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Duarte ABS, Perez-Castillo Y, da Nóbrega Alves D, de Castro RD, de Souza RL, de Sousa DP, Oliveira EE. Antifungal activity against Candida albicans of methyl 3,5-dinitrobenzoate loaded nanoemulsion. Braz J Microbiol 2024; 55:25-39. [PMID: 38135805 PMCID: PMC10920570 DOI: 10.1007/s42770-023-01214-9] [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: 10/11/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023] Open
Abstract
The objective of this study was to evaluate the antifungal activity of free methyl 3,5 dinitrobenzoate (MDNB) and its nanoemulsion (MDNB-NE) against strains of Candida albicans. Additionally, a molecular modeling study was also carried out to propose the mechanism of action and toxicity of MDNB. These results demonstrated the MDNB-NE presented a droplet size of 181.16 ± 3.20 nm and polydispersity index of 0.30 ± 0.03. MDNB and MDNB-NE inhibited the growth of all strains with minimum inhibitory concentrations of 0.27-1.10 mM. The biological results corroborated the molecular model, which pointed to a multi-target antifungal mechanism of action for MDNB in C. albicans. The study could serve as a basis for further research involving compounds with nitro groups with antifungal.
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Affiliation(s)
- Allana Brunna Sucupira Duarte
- Post Graduation Program in Natural and Synthetic Bioactive Products, Federal University of Paraíba, João Pessoa, Brazil
| | - Yunierkis Perez-Castillo
- Bio-Cheminformatics Research Group and Escuela de Ciencias Físicas y Matemáticas, Universidad de Las Américas, Quito, Ecuador
| | - Danielle da Nóbrega Alves
- Laboratory of Experimental Pharmacology and Cell Culture, Department of Clinical and Social Dentistry, Federal University of Paraíba, João Pessoa, Brazil
| | - Ricardo Dias de Castro
- Laboratory of Experimental Pharmacology and Cell Culture, Department of Clinical and Social Dentistry, Federal University of Paraíba, João Pessoa, Brazil
| | | | | | - Elquio Eleamen Oliveira
- Laboratory of Synthesis and Drug Delivery, State University of Paraíba, João Pessoa, Brazil.
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Xin Y, Quan L, Zhang H, Ao Q. Emerging Polymer-Based Nanosystem Strategies in the Delivery of Antifungal Drugs. Pharmaceutics 2023; 15:1866. [PMID: 37514052 PMCID: PMC10386574 DOI: 10.3390/pharmaceutics15071866] [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: 06/07/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
Nanosystems-based antifungal agents have emerged as an effective strategy to address issues related to drug resistance, drug release, and toxicity. Among the diverse materials employed for antifungal drug delivery, polymers, including polysaccharides, proteins, and polyesters, have gained significant attention due to their versatility. Considering the complex nature of fungal infections and their varying sites, it is crucial for researchers to carefully select appropriate polymers based on specific scenarios when designing antifungal agent delivery nanosystems. This review provides an overview of the various types of nanoparticles used in antifungal drug delivery systems, with a particular emphasis on the types of polymers used. The review focuses on the application of drug delivery systems and the release behavior of these systems. Furthermore, the review summarizes the critical physical properties and relevant information utilized in antifungal polymer nanomedicine delivery systems and briefly discusses the application prospects of these systems.
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Affiliation(s)
- Yuan Xin
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Liang Quan
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Hengtong Zhang
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
| | - Qiang Ao
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & Institute of Regulatory Science for Medical Device & National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China
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3
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Nanoparticles for Antimicrobial Agents Delivery-An Up-to-Date Review. Int J Mol Sci 2022; 23:ijms232213862. [PMID: 36430343 PMCID: PMC9696780 DOI: 10.3390/ijms232213862] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/06/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Infectious diseases constitute an increasing threat to public health and medical systems worldwide. Particularly, the emergence of multidrug-resistant pathogens has left the pharmaceutical arsenal unarmed to fight against such severe microbial infections. Thus, the context has called for a paradigm shift in managing bacterial, fungal, viral, and parasitic infections, leading to the collision of medicine with nanotechnology. As a result, renewed research interest has been noted in utilizing various nanoparticles as drug delivery vehicles, aiming to overcome the limitations of current treatment options. In more detail, numerous studies have loaded natural and synthetic antimicrobial agents into different inorganic, lipid, and polymeric-based nanomaterials and tested them against clinically relevant pathogens. In this respect, this paper reviews the most recently reported successfully fabricated nanoformulations that demonstrated a great potential against bacteria, fungi, viruses, and parasites of interest for human medicine.
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Sato MR, Oshiro-Junior JA, Rodero CF, Boni FI, Araújo VHS, Bauab TM, Nicholas D, Callan JF, Chorilli M. Photodynamic therapy-mediated hypericin-loaded nanostructured lipid carriers against vulvovaginal candidiasis. J Mycol Med 2022; 32:101296. [PMID: 35660541 DOI: 10.1016/j.mycmed.2022.101296] [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: 01/05/2022] [Revised: 05/05/2022] [Accepted: 05/16/2022] [Indexed: 11/24/2022]
Abstract
INTRODUCTION AND AIM The indiscriminate use and adverse effects of the main conventional antifungal agents compromise the effectiveness of treating vulvovaginal candidiasis (VVC), mainly caused by the species Candida albicans. This study evaluated the effectiveness of photodynamic therapy (PDT) and the in vitro and in vivo anti-candida potential of the hypericin (HYP)-loaded nanostructured lipid carriers (NLC). MATERIALS AND METHODS Empty NLC and NLC-HYP were characterized by the dynamic light scattering technique and transmission electron microscopy to evaluate the average particle size distribution and its morphologies. The in vitro inhibition photodynamic effect of the systems was tested to reduce the planktonic viability of C. albicans. The therapeutic assay photodynamic of the systems was performed to treat VVC in mice. RESULTS Empty NLC and NLC-HYP presented values of average hydrodynamic diameter, polydispersity index, and ζ-potential from 136 to 133 nm, 0.16 to 0.22, and -18 to -30 mV, respectively, on day 30. Microscopically, the systems showed spherical morphologies and nanoscale particles. Furthermore, in the in vitro inhibition assay, the treatment of PDT with NLC-HYP (NLC-HYP+) showed a significant reduction of the C. albicans planktonic viability compared to YNB negative control after 5 min of LED light irradiation. In the in vivo therapeutic assay, the antifungal group (vaginal antifungal cream) and NLC-HYP+ evaluated in the dark and by PDT, respectively, had a significant log10 reduction in fungal burden compared to the infected group on day 8 of the VVC treatment. CONCLUSION Due to the in vitro and in vivo anti-candida potential, PDT-mediated systems can be an effective strategy in VVC therapy.
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Affiliation(s)
- Mariana Rillo Sato
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil.
| | - João Augusto Oshiro-Junior
- Graduation Program in Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Paraíba 58429-500, Brazil
| | - Camila Fernanda Rodero
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil
| | - Fernanda Isadora Boni
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil
| | - Victor Hugo Sousa Araújo
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil
| | - Taís Maria Bauab
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil
| | - Dean Nicholas
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - John F Callan
- Biomedical Sciences Research Institute, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo 14800-903, Brazil.
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Dubashynskaya NV, Petrova VA, Romanov DP, Skorik YA. pH-Sensitive Drug Delivery System Based on Chitin Nanowhiskers-Sodium Alginate Polyelectrolyte Complex. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15175860. [PMID: 36079241 PMCID: PMC9456586 DOI: 10.3390/ma15175860] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 05/31/2023]
Abstract
Polyelectrolyte complexes (PECs), based on partially deacetylated chitin nanowhiskers (CNWs) and anionic polysaccharides, are characterized by their variability of properties (particle size, ζ-potential, and pH-sensitivity) depending on the preparation conditions, thereby allowing the development of polymeric nanoplatforms with a sustained release profile for active pharmaceutical substances. This study is focused on the development of hydrogels based on PECs of CNWs and sodium alginate (ALG) for potential vaginal administration that provide controlled pH-dependent antibiotic release in an acidic vaginal environment, as well as prolonged pharmacological action due to both the sustained drug release profile and the mucoadhesive properties of the polysaccharides. The desired hydrogels were formed as a result of both electrostatic interactions between CNWs and ALG (PEC formation), and the subsequent molecular entanglement of ALG chains, and the formation of additional hydrogen bonds. Metronidazole (MET) delivery systems with the desired properties were obtained at pH 5.5 and an CNW:ALG ratio of 1:2. The MET-CNW-ALG microparticles in the hydrogel composition had an apparent hydrodynamic diameter of approximately 1.7 µm and a ζ-potential of -43 mV. In vitro release studies showed a prolonged pH-sensitive drug release from the designed hydrogels; 37 and 67% of MET were released within 24 h at pH 7.4 and pH 4.5, respectively. The introduction of CNWs into the MET-ALG system not only prolonged the drug release, but also increased the mucoadhesive properties by about 1.3 times. Thus, novel CNW-ALG hydrogels are promising carriers for pH sensitive drug delivery carriers.
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Affiliation(s)
- Natallia V. Dubashynskaya
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr. V.O. 31, 199004 St. Petersburg, Russia
| | - Valentina A. Petrova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr. V.O. 31, 199004 St. Petersburg, Russia
| | - Dmitry P. Romanov
- Institute of Silicate Chemistry of the Russian Academy of Sciences, Adm. Makarova emb. 2, 199034 St. Petersburg, Russia
| | - Yury A. Skorik
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr. V.O. 31, 199004 St. Petersburg, Russia
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6
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Marena GD, Ramos MADS, Carvalho GC, de Lima LC, Nascimento ALCSD, Sábio RM, Rodero CF, Spósito L, Bauab TM, Chorilli M. Development and characterization of an amphotericin B - loaded nanoemulsion applied to Candida auris biofilms control. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Vallet-Regí M, Schüth F, Lozano D, Colilla M, Manzano M. Engineering mesoporous silica nanoparticles for drug delivery: where are we after two decades? Chem Soc Rev 2022; 51:5365-5451. [PMID: 35642539 PMCID: PMC9252171 DOI: 10.1039/d1cs00659b] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 12/12/2022]
Abstract
The present review details a chronological description of the events that took place during the development of mesoporous materials, their different synthetic routes and their use as drug delivery systems. The outstanding textural properties of these materials quickly inspired their translation to the nanoscale dimension leading to mesoporous silica nanoparticles (MSNs). The different aspects of introducing pharmaceutical agents into the pores of these nanocarriers, together with their possible biodistribution and clearance routes, would be described here. The development of smart nanocarriers that are able to release a high local concentration of the therapeutic cargo on-demand after the application of certain stimuli would be reviewed here, together with their ability to deliver the therapeutic cargo to precise locations in the body. The huge progress in the design and development of MSNs for biomedical applications, including the potential treatment of different diseases, during the last 20 years will be collated here, together with the required work that still needs to be done to achieve the clinical translation of these materials. This review was conceived to stand out from past reports since it aims to tell the story of the development of mesoporous materials and their use as drug delivery systems by some of the story makers, who could be considered to be among the pioneers in this area.
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Affiliation(s)
- María Vallet-Regí
- Chemistry in Pharmaceutical Sciences, School of Pharmacy, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i + 12), Pz/Ramón y Cajal s/n, Madrid 28040, Spain.
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Ferdi Schüth
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Daniel Lozano
- Chemistry in Pharmaceutical Sciences, School of Pharmacy, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i + 12), Pz/Ramón y Cajal s/n, Madrid 28040, Spain.
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Montserrat Colilla
- Chemistry in Pharmaceutical Sciences, School of Pharmacy, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i + 12), Pz/Ramón y Cajal s/n, Madrid 28040, Spain.
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
| | - Miguel Manzano
- Chemistry in Pharmaceutical Sciences, School of Pharmacy, Universidad Complutense de Madrid, Research Institute Hospital 12 de Octubre (i + 12), Pz/Ramón y Cajal s/n, Madrid 28040, Spain.
- Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Madrid 28029, Spain
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8
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Marena GD, Ramos MADS, Carvalho GC, Junior JAP, Resende FA, Corrêa I, Ono GYB, Sousa Araujo VH, Camargo BAF, Bauab TM, Chorilli M. Natural product‐based nanomedicine applied to fungal infection treatment: A review of the last 4 years. Phytother Res 2022; 36:2710-2745. [DOI: 10.1002/ptr.7460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/25/2022] [Accepted: 03/26/2022] [Indexed: 11/10/2022]
Affiliation(s)
- Gabriel Davi Marena
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Matheus Aparecido dos Santos Ramos
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Gabriela Corrêa Carvalho
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | | | | | - Ione Corrêa
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Gabriela Yuki Bressanim Ono
- Department of Biological Sciences, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Victor Hugo Sousa Araujo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Bruna Almeida Furquim Camargo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
| | - Tais Maria Bauab
- Department of Biological Sciences and Health University of Araraquara (UNIARA) Araraquara Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences São Paulo State University (UNESP) Araraquara Brazil
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9
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Aleanizy FS, Taha EI, Salem-Bekhit MM, Felimban AMJ, Al-Suwayeh SA, Al-Joufi FA, Muharram MM, Alqahtani FY, Shakeel F, Youssof AME, Bayomi M, Abouelela AEF. Formulation and in vitro and in vivo evaluation of surfactant-stabilized mucoadhesive nanogels for vaginal delivery of fluconazole. Drug Dev Ind Pharm 2022; 47:1935-1942. [PMID: 35537065 DOI: 10.1080/03639045.2022.2070760] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Surfactant-stabilized mucoadhesive nanogels (NGs) for vaginal delivery of fluconazole (FLZ) were studied and evaluated in this work. FLZ-NG formulations were prepared using two different types of mucoadhesive polymers, Carbopol 934 (Ca934) and Pluronic F-127 (PF127). A rheology study revealed a non-Newtonian pseudoplastic flow behavior (shear thinning) in the prepared NGs. The viscosity of Ca934 NG (0.47 Pa s) was much lower compared to the PF127 NG (6.10 Pa s). The rheology study results correlated well with the in vitro FLZ release profile from the NG formulations. A pH study (pH = 3.90-4.90) revealed that the formulations were physiologically suitable for vaginal application, to avoid the irritation of the vaginal mucosa. Finally, in vitro and in vivo antimicrobial tests were performed. FLZ incorporated into the Ca934 gel had the strongest antimicrobial effect, with a mean inhibition zone of 24 ± 1.6 mm. Based on these results, it was concluded that the mucoadhesive NG incorporating FLZ resulted in a sustained release and enhanced antimicrobial effect, which would enhance and prolong the therapeutic effects of vaginally delivered FLZ.
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Affiliation(s)
- Fadilah Sfouq Aleanizy
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Ehab I Taha
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mounir M Salem-Bekhit
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Microbiology & Immunology, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Alaa M J Felimban
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Saleh A Al-Suwayeh
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Fakhria A Al-Joufi
- Department of Pharmacology, College of Pharmacy, Jouf University, Aljouf, Saudi Arabia
| | - Magdy M Muharram
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia.,Department of Microbiology, College of Science, Al-Azhar University, Nasr City, Cairo, Egypt
| | - Fulwah Y Alqahtani
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah M E Youssof
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohsen Bayomi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Amal E F Abouelela
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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10
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Marena GD, Ramos MADS, Lima LC, Chorilli M, Bauab TM. Galleria mellonella for systemic assessment of anti-Candida auris using amphotericin B loaded in nanoemulsion. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:151023. [PMID: 34662607 DOI: 10.1016/j.scitotenv.2021.151023] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Galleria mellonella is a model that uses adult larvae to assess the prophylactic, therapeutic, and acute toxic potential of substances. Given their benefits, G. mellonella models are being employed in investigations of systemic infections caused by highly resistant microorganisms. Among the multiresistant microorganisms, we highlight Candida auris, a yeast with high mortality potential and resistance. Among the potential drugs, amphotericin B (AmB) stands out; however, microbial resistance episodes and side effects caused by low selectivity have been observed. The incorporation of AmB into a nanoemulsion (NE) can contribute to the control of C. auris infections and resistance as well as decrease the side effects of this drug. This study aimed to develop AmB-loaded NE (NEA) and evaluate its antifungal action against C. auris in G. mellonella. NEs were obtained by using sunflower oil and cholesterol as the oily phase, polyoxyethylene 20 cetyl ether (Brij® 58) and soy phosphatidylcholine as the surfactant system, and PBS buffer as the aqueous phase. An alternative in vivo assay with G. mellonella for acute toxicity and infection was performed using adult stage larvae (200 mg to 400 mg). According to the obtained results, NE and NEA exhibited sizes of 43 and 48 nm, respectively. The PDI was 0.285 and 0.389 for NE and NEA, respectively. The ZP showed electronegativity for both systems, with -3.77 mV and -3.80 mV for NE and NEA, respectively. Acute toxicity showed that free AmB had greater acute toxicity potential than NEA. The survival assay showed high larval viability. NEA had a better antifungal profile against systemic infection in G. mellonella. It is concluded that the alternative model proved to be an efficient in vivo assay to determine the toxicity and evaluate the therapeutic property of free AmB and NEA in systemic infections caused by C. auris.
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Affiliation(s)
- Gabriel Davi Marena
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State 14.800-903, Brazil
| | - Matheus Aparecido Dos Santos Ramos
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State 14.800-903, Brazil
| | - Laura Caminitti Lima
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State 14.800-903, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State 14.800-903, Brazil.
| | - Tais Maria Bauab
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, São Paulo State 14.800-903, Brazil.
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11
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Corrêa Carvalho G, Miguel Sábio R, Spósito L, de Jesus Andreoli Pinto T, Chorilli M. An overview of the use of central venous catheters impregnated with drugs or with inorganic nanoparticles as a strategy in preventing infections. Int J Pharm 2022; 615:121518. [DOI: 10.1016/j.ijpharm.2022.121518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/17/2022] [Accepted: 01/22/2022] [Indexed: 10/19/2022]
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12
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Saleh N, Elshaer S, Girgis G. Biodegradable polymers-based nanoparticles to enhance the antifungal efficacy of fluconazole against Candida albicans. Curr Pharm Biotechnol 2021; 23:749-757. [PMID: 34238149 DOI: 10.2174/1389201022666210708105142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 04/26/2021] [Accepted: 05/04/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Fluconazole (FLZ), a potent antifungal medication, is characterized by poor water solubility that reduced its antifungal efficacy. OBJECTIVE This study aimed to prepare FLZ-loaded polymeric nanoparticles (NPs) by using different polymers and techniques as a mean of enhancing the antifungal activity of FLZ. METHODS NP1, NP2, and NP3 were prepared by the double emulsion/solvent evaporation method using PLGA, PCL, and PLA, respectively. The ionotropic pre-gelation technique was applied to prepare an alginate/chitosan-based formulation (NP4). Particle size, zeta potential, encapsulation efficiency, and loading capacity were characterized. FT-IR spectra of FLZ, the polymers, and the prepared NPs were estimated. NP4 was selected for further in-vitro release evaluation. The broth dilution method was used to assess the antifungal activity of NP4 using a resistant clinical isolate of Candida albicans. RESULTS The double emulsion method produced smaller-sized particles (<390 nm) but with much lower encapsulation efficiency (< 12%). Alternatively, the ionic gelation method resulted in nanosized particles with a markedly higher encapsulation efficiency of about 40%. The FT-IR spectroscopy confirmed the loading of the FLZ molecules in the polymeric network of the prepared NPs. The release profile of NP4 showed a burst initial release followed by a controlled pattern up to 24 hours with a higher percent released relative to the free FLZ suspension. NP4 was able to reduce the value of MIC of FLZ by 20 times. CONCLUSION The antifungal activity of FLZ against C. albicans was enhanced markedly via its loading in the alginate/chitosan-based polymeric matrix of NP4.
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Affiliation(s)
- Noha Saleh
- Pharmaceutics Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Soha Elshaer
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Germeen Girgis
- Pharmaceutics Department, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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13
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Jiao J, Zhang S, Qu X, Yue B. Recent Advances in Research on Antibacterial Metals and Alloys as Implant Materials. Front Cell Infect Microbiol 2021; 11:693939. [PMID: 34277473 PMCID: PMC8283567 DOI: 10.3389/fcimb.2021.693939] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 06/21/2021] [Indexed: 11/13/2022] Open
Abstract
Implants are widely used in orthopedic surgery and are gaining attention of late. However, their use is restricted by implant-associated infections (IAI), which represent one of the most serious and dangerous complications of implant surgeries. Various strategies have been developed to prevent and treat IAI, among which the closest to clinical translation is designing metal materials with antibacterial functions by alloying methods based on existing materials, including titanium, cobalt, tantalum, and biodegradable metals. This review first discusses the complex interaction between bacteria, host cells, and materials in IAI and the mechanisms underlying the antibacterial effects of biomedical metals and alloys. Then, their applications for the prevention and treatment of IAI are highlighted. Finally, new insights into their clinical translation are provided. This review also provides suggestions for further development of antibacterial metals and alloys.
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Affiliation(s)
- Juyang Jiao
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Shutao Zhang
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xinhua Qu
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bing Yue
- Department of Bone and Joint Surgery, Department of Orthopaedics, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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14
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Carvalho GC, de Oliveira RAP, Araujo VHS, Sábio RM, de Carvalho LR, Bauab TM, Corrêa I, Chorilli M. Prevalence of vulvovaginal candidiasis in Brazil: a systematic review. Med Mycol 2021; 59:946-957. [PMID: 34137857 DOI: 10.1093/mmy/myab034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/26/2021] [Accepted: 06/15/2021] [Indexed: 12/18/2022] Open
Abstract
Vulvovaginal candidiasis (CVV) is a condition whose signs and symptoms are related to inflammation caused by Candida spp infection. It is the second leading cause of vaginitis in the world, representing a public health problem. The present systematic review comes with the proposal of analyze and identify the available evidence on CVV prevalence in Brazil, pointing out its variability by regions. For this, a systematic literature review was carried out with meta-analysis of cross-sectional and cohort studies, following the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) guide recommendations, and was registered in the International Prospective Register of Systematic Reviews (PROSPERO 2020 CRD42020181695). The databases used for survey were LILACS, Scielo, Scopus, PUBMED, Web of Science and CINAHL. Fifteen studies were selected to estimate CVV prevalence in the Brazilian territory. South and Southeast regions have higher prevalences than the North and Northeast regions, no data were found for the Midwest region. The estimated prevalence for Brazil is 18%, however, it is suggested that this number is higher due to underreporting and the presence of asymptomatic cases. Therefore, new epidemiological studies are recommended throughout Brazil, to elucidate the profile of this disease in the country, in addition to assisting in the elaboration of an appropriate prevention plan by state. LAY ABSTRACT Data found in the literature regarding the epidemiological profile of VVC in Brazil are obsolete and incomplete, so the present systematic review has the proposal to analyze and identify the evidence on VVC prevalence in Brazil. The estimated prevalence is 18%, however, this number can be higher.
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Affiliation(s)
- Gabriela Corrêa Carvalho
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | | | - Victor Hugo Sousa Araujo
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Rafael Miguel Sábio
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Lídia Raquel de Carvalho
- Biostatistics department, Institute of Biosciences, São Paulo State University (UNESP), 18618687 Botucatu, Brazil
| | - Taís Maria Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Ione Corrêa
- Nursing department, Medical School, São Paulo State University (UNESP), 18618687 Botucatu, Brazil
| | - Marlus Chorilli
- Department of Drugs and Pharmaceutics, School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
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15
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Biomaterials for the Prevention of Oral Candidiasis Development. Pharmaceutics 2021; 13:pharmaceutics13060803. [PMID: 34072188 PMCID: PMC8229946 DOI: 10.3390/pharmaceutics13060803] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/18/2021] [Accepted: 05/25/2021] [Indexed: 12/19/2022] Open
Abstract
Thousands of microorganisms coexist within the human microbiota. However, certain conditions can predispose the organism to the overgrowth of specific pathogens that further lead to opportunistic infections. One of the most common such imbalances in the normal oral flora is the excessive growth of Candida spp., which produces oral candidiasis. In immunocompromised individuals, this fungal infection can reach the systemic level and become life-threatening. Hence, prompt and efficient treatment must be administered. Traditional antifungal agents, such as polyenes, azoles, and echinocandins, may often result in severe adverse effects, regardless of the administration form. Therefore, novel treatments have to be developed and implemented in clinical practice. In this regard, the present paper focuses on the newest therapeutic options against oral Candida infections, reviewing compounds and biomaterials with inherent antifungal properties, improved materials for dental prostheses and denture adhesives, drug delivery systems, and combined approaches towards developing the optimum treatment.
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16
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Dos Santos Ramos MA, de Toledo LG, Spósito L, Marena GD, de Lima LC, Fortunato GC, Araújo VHS, Bauab TM, Chorilli M. Nanotechnology-based lipid systems applied to resistant bacterial control: A review of their use in the past two decades. Int J Pharm 2021; 603:120706. [PMID: 33991597 DOI: 10.1016/j.ijpharm.2021.120706] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/09/2021] [Accepted: 05/10/2021] [Indexed: 02/07/2023]
Abstract
The rate of infections caused by resistant bacteria to the antimicrobials available for human use grows exponentially every year, which generates major impacts on human health and the world economy. In the last two decades, human beings can witness the expressive increase in the Science and Technology worldwide, and areas such as Health Sciences have benefited from these advances in favor of human health, such as the advent of Pharmaceutical Nanotechnology as an important approach applied for bacterial infections treatment with resistance profile to available antibiotics. This review of the scientific literature brings the applicability of nanotechnology-based lipid systems as an innovative tool in the improvement of bacterial infections treatment. Important studies involving the use of liposomes, solid lipid nanoparticles, nanostructured lipid carriers, nanoemulsions, microemulsions and lipid nanocapsules were verified in the period from 2000 to 2020, where important scientific results were found and will serve as a basis for the use of these systems to remain in constant updating. This manuscript shows the use of these drug delivery systems as potential vehicles for antibacterial compounds, which opens a new hope in the complement of the antibacterial therapeutic arsenal. Important studies developed in the last 20 years are present in this review, and thus guarantees an update on the use of these drug delivery systems for researchers from different areas of Health Sciences.
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Affiliation(s)
- Matheus Aparecido Dos Santos Ramos
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil.
| | - Luciani Gaspar de Toledo
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Larissa Spósito
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Gabriel Davi Marena
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Laura Caminitti de Lima
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Giovanna Capaldi Fortunato
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Victor Hugo Sousa Araújo
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Taís Maria Bauab
- Department of Biological Sciences, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil
| | - Marlus Chorilli
- Department of Drug and Medicines, São Paulo State University (UNESP), School of Pharmaceutical Sciences, Campus Araraquara, 14.800-903 São Paulo State, Brazil.
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17
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Ferreira PS, Victorelli FD, Rodero CF, Fortunato GC, Araújo VHS, Fonseca-Santos B, Bauab TM, Van Dijck P, Chorilli M. p-Coumaric acid loaded into liquid crystalline systems as a novel strategy to the treatment of vulvovaginal candidiasis. Int J Pharm 2021; 603:120658. [PMID: 33964336 DOI: 10.1016/j.ijpharm.2021.120658] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 04/08/2021] [Accepted: 04/25/2021] [Indexed: 12/30/2022]
Abstract
Vulvovaginal candidiasis (VVC) is an extremely common type of vaginal infection, which is mainly caused by Candida albicans. However, non-albicans Candida species are frequently more resistant to conventional antifungal agents and can represent up to 30% of cases. Due to side effects and increasing antifungal resistance presented by standard therapies, phenolic compounds, such as p-coumaric acid (p-CA), have been studied as molecules from natural sources with potential antifungal activity. p-CA is a poorly water-soluble compound, thus loading it into liquid crystals (LCs) may increase its solubility and effectiveness on the vaginal mucosa. Thereby, here we propose the development of mucoadhesive liquid crystalline systems with controlled release of p-CA, for the local treatment of VVC. Developed LCs consisted of fixed oily and aqueous phases (oleic acid and cholesterol (5:1) and poloxamer dispersion 16%, respectively), changing only the surfactant phase components (triethanolamine oleate (TEA-Oleate) or triethanolamine (TEA), the latter producing TEA-Oleate molecules when mixed with oleic acid). Systems were also diluted in artificial vaginal mucus (1:1 ratio) to mimic the vaginal environment and verify possible structural changes on formulations upon exposure to the mucosa. From the characterization assays, p-CA loaded TEA-Oleate systems presented mucoadhesive profile, liquid crystalline mesophases, well-organized structures and pseudoplastic behaviour, which are desirable parameters for topical formulations. Moreover, they were able to control the release of p-CA throughout the 12 h assay, as well as decrease its permeation into the vaginal mucosa. p-CA showed antifungal activity in vitro against reference strains of C. albicans (SC5314), C. glabrata (ATCC 2001) and C. krusei (ATCC 6258), and exhibited higher eradication of mature biofilms than amphotericin B and fluconazole. In vivo experiments demonstrated that the formulations reduced the presence of filamentous forms in the vaginal lavages and provided an improvement in swelling and redness present in the mice vaginal regions. Altogether, here we demonstrated the potential and feasibility of using p-CA loaded liquid crystalline systems as a mucoadhesive drug delivery system for topical treatment of VVC.
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Affiliation(s)
- P S Ferreira
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil.
| | - F D Victorelli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - C F Rodero
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - G C Fortunato
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - V H S Araújo
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - B Fonseca-Santos
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - T M Bauab
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
| | - P Van Dijck
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, Leuven-Heverlee, Belgium; VIB-KU Leuven Center for Microbiology, Flanders, Belgium
| | - M Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Araraquara, São Paulo, Brazil
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18
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Carvalho GC, Araujo VHS, Fonseca-Santos B, de Araújo JTC, de Souza MPC, Duarte JL, Chorilli M. Highlights in poloxamer-based drug delivery systems as strategy at local application for vaginal infections. Int J Pharm 2021; 602:120635. [PMID: 33895295 DOI: 10.1016/j.ijpharm.2021.120635] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 01/02/2023]
Abstract
Infectious diseases related to the vagina include diseases caused by the imbalance of the vaginal flora and by sexually transmitted infections. Some of these present themselves as a public health problem due to the lack of efficient treatment that leads to their complete cure, and others due to the growing resistance to drugs used in therapy. In this sense, new treatment strategies are desirable, with vaginal administration rout being a great choice since can bypass first-pass metabolism and decrease drug interactions and adverse effects. However, it is worth highlighting limitations related to patient's discomfort at application time. Thereby, the use of poloxamer-based drug delivery systems is desirable due its stimuli-sensitive characteristic. Therefore, the present review reports a brief overview of poloxamer properties, biological behavior and advances in poloxamer applications in controlled drug release systems for infectious diseases related to the vagina treatment and prevention.
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Affiliation(s)
- Gabriela Corrêa Carvalho
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Victor Hugo Sousa Araujo
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Bruno Fonseca-Santos
- Faculty of Pharmaceutical Sciences, University of Campinas (UNICAMP), 13083-871 Campinas, Brazil
| | | | | | - Jonatas Lobato Duarte
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil
| | - Marlus Chorilli
- School of Pharmaceutical Sciences, São Paulo State University (UNESP), 14800-903 Araraquara, Brazil.
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19
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Kakkar S, Singh M, Mohan Karuppayil S, Raut JS, Giansanti F, Papucci L, Schiavone N, Nag TC, Gao N, Yu FSX, Ramzan M, Kaur IP. Lipo-PEG nano-ocular formulation successfully encapsulates hydrophilic fluconazole and traverses corneal and non-corneal path to reach posterior eye segment. J Drug Target 2021; 29:631-650. [PMID: 33410357 DOI: 10.1080/1061186x.2020.1871483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The present study describes a special lipid-polyethylene glycol matrix solid lipid nanoparticles (SLNs; 138 nm; -2.07 mV) for ocular delivery. Success of this matrix to encapsulate (entrapment efficiency - 62.09%) a hydrophilic drug, fluconazole (FCZ-SLNs), with no burst release (67% release in 24 h) usually observed with most water-soluble drugs, is described presently. The system showed 164.64% higher flux than the marketed drops (Zocon®) through porcine cornea. Encapsulation within SLNs and slow release did not compromise efficacy of FCZ-SLNs. Latter showed in vitro and in vivo antifungal effects, including antibiofilm effects comparable to free FCZ solution. Developed system was safe and stable (even to sterilisation by autoclaving); and showed optimal viscosity, refractive index and osmotic pressure. These SLNs could reach up to retina following application as drops. The mechanism of transport via corneal and non-corneal transcellular pathways is described by fluorescent and TEM images of mice eye cross sections. Particles streamed through the vitreous, crossed inner limiting membrane and reached the outer retinal layers.
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Affiliation(s)
- Shilpa Kakkar
- UGC-Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Mandeep Singh
- UGC-Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Sankunny Mohan Karuppayil
- Department of Medical Biotechnology, Stem Cell & Regenerative Medicine, Center for Interdisciplinary Research, D. Y. Patil Educational Society, Kolhapur, India
| | - Jayant S Raut
- School of Life Sciences, SRTM University Nanded, Nanded, India
| | - Fabrizio Giansanti
- Department of Translational Medicine and Surgery, Eye Clinic, Florence, Italy
| | - Laura Papucci
- Department of Experimental and Clinical Biomedical Sciences, Section of Experimental Pathology and Oncology, University of Florence, Florence, Italy
| | - Nicola Schiavone
- Department of Experimental and Clinical Biomedical Sciences, Section of Experimental Pathology and Oncology, University of Florence, Florence, Italy
| | - T C Nag
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Nan Gao
- Departments of Ophthalmology and Anatomy/Cell Biology, Kresge Eye Institute, Kresge, MI, USA
| | - Fu-Shin X Yu
- Departments of Ophthalmology and Anatomy/Cell Biology, Kresge Eye Institute, Kresge, MI, USA
| | - Mohhammad Ramzan
- UGC-Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Indu Pal Kaur
- UGC-Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
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