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Chen C, Huang X, Wang F, Yin S, Zhu Y, Han L, Chen G, Chen Z. Preparation of a modified silk-based gel/microsphere composite as a potential hepatic arterial embolization agent. BIOMATERIALS ADVANCES 2023; 153:213559. [PMID: 37523824 DOI: 10.1016/j.bioadv.2023.213559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/22/2023] [Accepted: 07/11/2023] [Indexed: 08/02/2023]
Abstract
Transcatheter arterial chemoembolization (TACE) is an effective method for treating hepatocellular carcinoma (HCC). In this study, chitosan (CS), sodium glycerophosphate (GP), and sodium alginate (SA) were used as the main raw materials to develop clinically non-degradable embolization microspheres (Ms). Chitosan/sodium alginate embolization Ms. were generated using an emulsification cross-linking method. The Ms. were then uniformly dispersed in CS/GP temperature-sensitive gels to produce Gel/Ms. composite embolic agents. The results showed that Gel/Ms. had good morphology and a neatly arranged three-dimensional structure, and the Ms. dispersed in the Gel as evidenced by SEM. Furthermore, Gel/Ms. has good blood compatibility, with a hemolysis rate of ≤5 %. The cytotoxicity experiments have also proven its excellent cell compatibility. The degradation rate of Gel/Ms. was 58.869 ± 1.754 % within 4 weeks, indicating that Gel/Ms. had good degradation performance matching its drug release purpose. The Gel/Ms. adheres better at the target site than Ms. alone and releases the drug steadily over a long period, and the maximum release rate of Gel/Ms. within 8 h was 38.33 ± 1.528 %, and within 168 h was 81.266 ± 1.193 %. Overall, Gel/Ms. demonstrate better slow drug release, reduced sudden drug release, prolonged drug action time at the target site, and reduced toxic side effects on the body compared to Gel alone.
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Affiliation(s)
- Cai Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Xiang Huang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Fuping Wang
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Shiyun Yin
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Yu Zhu
- The seventh people's hospital of Chongqing, Chongqing 400054, PR China
| | - Lili Han
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China
| | - Zhongmin Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, PR China.
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Arrua EC, Sanchez SV, Trincado V, Hidalgo A, Quest AFG, Morales JO. Experimental design and optimization of a novel dual-release drug delivery system with therapeutic potential against infection with Helicobacter pylori. Colloids Surf B Biointerfaces 2022; 213:112403. [PMID: 35219219 DOI: 10.1016/j.colsurfb.2022.112403] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/04/2022] [Accepted: 02/05/2022] [Indexed: 12/24/2022]
Abstract
The objective of this study was to develop clarithromycin-loaded lipid nanocarriers and incorporate them into microcapsules for pH-specific localized release of clarithromycin in the Helicobacter pylori microenvironment in order to obtain a gastro-retentive and pH-sensitive formulation. A Plackett-Burman design was applied to identify the effect of 5 factors on 3 responses. Then, a central composite design was applied to estimate the most important factors leading to the best compromise between lower particle size, polydispersity index and particle size changes. The optimized clarithromycin-loaded nanocapsules were employed to generate microcapsules by different methodologies. Nanocarriers and microcapsules were characterized in vitro. Experimental design and conditions were optimized to obtain nanocapsules of around 100 nm by a modified phase inversion-based process. High particle size homogeneity and high stability were achieved. At 4 °C both optimized lipid nanocapsules were stable during at least 365 days, confirming stability under those conditions. Clarithromycin incorporation in the nanocarrier was effective. Both types of microcoating were evaluated regarding their pH sensitivity. Spray drying microcapsules exhibited similar and uncontrolled release profiles at pH 2 and 7.4. Alternatively, when microcoatings were generated using an Encapsulator, release was insignificant at pH 2, while at pH 7.4 release was triggered, and appeared more appropriate to formulate microcapsules that release nanocarriers under pH neutral Helicobacter pylori microenvironment conditions, thereby permitting effective drug delivery in infected locations. The release of clarithromycin from lipid nanocarrier loaded microcapsules was pH-sensitive suggesting that this could be an effective strategy for clarithromycin delivery to the Helicobacter pylori microenvironment. Clarithromycin nanocapsules with and without microcoating showed a high anti-Helicobacter pylori activity in vitro.
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Affiliation(s)
- Eva C Arrua
- Drug Delivery Laboratory, Departamento de Ciencias y Tecnología Farmacéuticas, Universidad de Chile, Chile; Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile
| | - Sofía V Sanchez
- Drug Delivery Laboratory, Departamento de Ciencias y Tecnología Farmacéuticas, Universidad de Chile, Chile; Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile; Center of New Drugs for Hypertension (CENDHY), Santiago 8380492, Chile
| | - Valeria Trincado
- Drug Delivery Laboratory, Departamento de Ciencias y Tecnología Farmacéuticas, Universidad de Chile, Chile
| | - Antonio Hidalgo
- Laboratory of Cellular Communication, Center for the study of Exercise, Metabolism and Cancer (CEMC), Program in Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Andrew F G Quest
- Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile; Laboratory of Cellular Communication, Center for the study of Exercise, Metabolism and Cancer (CEMC), Program in Cell and Molecular Biology, Institute of Biomedical Sciences (ICBM), Faculty of Medicine, Universidad de Chile, Santiago 8380453, Chile
| | - Javier O Morales
- Drug Delivery Laboratory, Departamento de Ciencias y Tecnología Farmacéuticas, Universidad de Chile, Chile; Advanced Center for Chronic Diseases (ACCDiS), Santiago 8380492, Chile; Center of New Drugs for Hypertension (CENDHY), Santiago 8380492, Chile.
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Velázquez NS, Turino LN, Luna JA, Mengatto LN. Progesterone loaded thermosensitive hydrogel for vaginal application: Formulation and in vitro comparison with commercial product. Saudi Pharm J 2019; 27:1096-1106. [PMID: 31885469 PMCID: PMC6921185 DOI: 10.1016/j.jsps.2019.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 09/22/2019] [Indexed: 12/15/2022] Open
Abstract
Progesterone (PGT) is a natural hormone that stimulates and regulates various important functions, such as the preparation of the female body for conception and pregnancy. Due to its low water solubility, it is administered in a micronized form and/or in vehicles with specific solvents requirements. In order to improve the drug solubility, inclusion complexes of PGT and β-cyclodextrins were obtained by the freeze-drying method. Two β-cyclodextrins (native and methylated) in two solvents (water and water:ethanol) and different molar ratio of the reagents were the variables tested for the selection of the best condition for the preparation of the complexes. The PGT/randomly methylated-β-cyclodextrin complexes were incorporated into chitosan thermosensitive hydrogels, as an alternative formulation for the vaginal administration of PGT. Neither the micro and macroscopic characteristics of the gels nor the transition time from solution to gel were modified after the complexes incorporation. In addition, chitosan gels with complexes resisted better the degradation in simulated vaginal fluid in comparison to commercial gel (Crinone®). The chitosan gel with inclusion complexes and Crinone® were tested in vitro in a diffusion assay to evaluate the delivery of the hormone and its diffusion through porcine epithelial mucosa obtained from vaginal tissue. Chitosan gel presented sustained diffusion similar to the exhibited by commercial gel. The use of chitosan gels with inclusion complexes based on cyclodextrins would be a viable alternative for vaginal administration of PGT.
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Affiliation(s)
- Natalia S Velázquez
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), Centro Científico Tecnológico, Colectora Ruta Nacional 168, Paraje El Pozo, Santa Fe, Argentina
| | - Ludmila N Turino
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), Centro Científico Tecnológico, Colectora Ruta Nacional 168, Paraje El Pozo, Santa Fe, Argentina
| | - Julio A Luna
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), Centro Científico Tecnológico, Colectora Ruta Nacional 168, Paraje El Pozo, Santa Fe, Argentina
| | - Luciano N Mengatto
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-Consejo Nacional de Investigaciones Científicas y Técnicas (UNL-CONICET), Centro Científico Tecnológico, Colectora Ruta Nacional 168, Paraje El Pozo, Santa Fe, Argentina
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Fookes FA, Mengatto LN, Rigalli A, Luna JA. Controlled fluoride release for osteoporosis treatment using orally administered chitosan hydrogels. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Pesoa JI, Rico MJ, Rozados VR, Scharovsky OG, Luna JA, Mengatto LN. Paclitaxel delivery system based on poly(lactide-co-glycolide) microparticles and chitosan thermo-sensitive gel for mammary adenocarcinoma treatment. J Pharm Pharmacol 2018; 70:1494-1502. [PMID: 30182425 DOI: 10.1111/jphp.13006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 08/10/2018] [Indexed: 12/31/2022]
Abstract
OBJECTIVES To evaluate the combination of more than one release system in the same formulation as a useful strategy to achieve paclitaxel delivery in a more sustained and controlled manner. METHODS The present study deals with the preparation of poly(lactide-co-glycolide) microparticles loaded with paclitaxel and included in a chitosan thermo-sensitive gelling solution. The microparticles were characterized by their size, shape and drug loading. The formulation was characterized by scanning electron microscopy, in vitro release experiments and was evaluated in mice bearing mammary adenocarcinoma. KEY FINDINGS The formation of paclitaxel crystals in a pharmaceutical formulation reduces its efficacy. In this work, the use of microparticles avoided this phenomenon. Combining more than one delivery system allowed delivering paclitaxel in a more sustained and controlled manner leading to a long-term effect in the site of action. The formulation showed an inhibition in tumour volume of 63.0% in comparison with the control group. CONCLUSIONS One intratumour injection of gelling solution containing the microparticles was at least as efficacious as four intraperitoneal injections of a commercial formulation. In addition, the delivery system was nontoxic, and the treated mice presented the highest percentage of tumour regression and median survival time.
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Affiliation(s)
- Juan I Pesoa
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina
| | - María J Rico
- Instituto de Genética Experimental, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Rosario, Argentina
| | - Viviana R Rozados
- Instituto de Genética Experimental, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Rosario, Argentina
| | - O Graciela Scharovsky
- Instituto de Genética Experimental, Facultad de Ciencias Médicas, Universidad Nacional de Rosario, Rosario, Argentina.,Consejo Nacional de Investigaciones Científicas y Técnicas, Rosario, Argentina
| | - Julio A Luna
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina
| | - Luciano N Mengatto
- Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), Universidad Nacional del Litoral-CONICET, Santa Fe, Argentina
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Pellá MCG, Lima-Tenório MK, Tenório-Neto ET, Guilherme MR, Muniz EC, Rubira AF. Chitosan-based hydrogels: From preparation to biomedical applications. Carbohydr Polym 2018; 196:233-245. [PMID: 29891292 DOI: 10.1016/j.carbpol.2018.05.033] [Citation(s) in RCA: 320] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/29/2018] [Accepted: 05/09/2018] [Indexed: 12/29/2022]
Abstract
The advances in the field of biomaterials have led to several studies on alternative biocompatible devices and to their development focusing on their properties, benefits, limitations, and utilization of alternative resources. Due to their advantages like biocompatibility, biodegradability, and low cost, polysaccharides have been widely used in the development of hydrogels. Among the polysaccharides studied on hydrogels preparation, chitosan (pure or combined with natural/synthetic polymers) have been widely investigated for use in biomedical field. In view of potential applications of chitosan-based hydrogels, this review focuses on the most recent progress made with respect to preparation, properties, and their salient accomplishments for drug delivery and tissue engineering.
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Affiliation(s)
- Michelly C G Pellá
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Michele K Lima-Tenório
- Department of Chemistry, State University of Ponta Grossa, Av. Gen. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa, Paraná, Brazil.
| | - Ernandes T Tenório-Neto
- Department of Chemistry, State University of Ponta Grossa, Av. Gen. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa, Paraná, Brazil
| | - Marcos R Guilherme
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil
| | - Edvani C Muniz
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil; Post-graduate Program on Materials Science & Engineering, Federal University of Technology, Paraná (UTFPR-LD), CEP 86036-370, Londrina, Paraná, Brazil
| | - Adley F Rubira
- Department of Chemistry, State University of Maringá, Av. Colombo, 5790, CEP 87020-900, Maringá, Paraná, Brazil.
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