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Lukova P, Katsarov P. Contemporary Aspects of Designing Marine Polysaccharide Microparticles as Drug Carriers for Biomedical Application. Pharmaceutics 2023; 15:2126. [PMID: 37631340 PMCID: PMC10458623 DOI: 10.3390/pharmaceutics15082126] [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: 06/22/2023] [Revised: 08/05/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
The main goal of modern pharmaceutical technology is to create new drug formulations that are safer and more effective. These formulations should allow targeted drug delivery, improved drug stability and bioavailability, fewer side effects, and reduced drug toxicity. One successful approach for achieving these objectives is using polymer microcarriers for drug delivery. They are effective for treating various diseases through different administration routes. When creating pharmaceutical systems, choosing the right drug carrier is crucial. Biomaterials have become increasingly popular over the past few decades due to their lack of toxicity, renewable sources, and affordability. Marine polysaccharides, in particular, have been widely used as substitutes for synthetic polymers in drug carrier applications. Their inherent properties, such as biodegradability and biocompatibility, make marine polysaccharide-based microcarriers a prospective platform for developing drug delivery systems. This review paper explores the principles of microparticle design using marine polysaccharides as drug carriers. By reviewing the current literature, the paper highlights the challenges of formulating polymer microparticles, and proposes various technological solutions. It also outlines future perspectives for developing marine polysaccharides as drug microcarriers.
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Affiliation(s)
- Paolina Lukova
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria;
| | - Plamen Katsarov
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
- Research Institute at Medical University of Plovdiv, 4002 Plovdiv, Bulgaria
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2
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Delivery and diffusion of retinal in dermis and epidermis through the combination of prodrug nanoparticles and detachable dissolvable microneedles. Drug Deliv Transl Res 2022; 12:2751-2761. [PMID: 35191004 DOI: 10.1007/s13346-022-01136-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2022] [Indexed: 12/15/2022]
Abstract
To minimize chemical degradation of retinal, we graft this aldehyde on chitosan chains to make them self-assemble into pro-retinal nanoparticles (PRNs), which we then load into detachable dissolvable microneedles (DDMNs) made of 1:1 (by weight) hyaluronic acid/maltose. The presence of PRNs in the hyaluronic acid-maltose needle matrix also helps improve the microneedles' mechanical strength. Ex vivo administration of PRN-loaded DDMNs on fresh porcine ear skin shows, as observed by stereomicroscopic and confocal fluorescence microscopic analyses of the cross-sectioned tissue pieces, complete deposition followed by dissolution of the needles and diffusion of the PRNs in epidermis and dermis. Rats administered with a single dose of PRN-loaded DDMNs show significantly increased epidermal thickness as compared to rats administered with control DDMNs (no PRN). Both the PRN-loaded DDMNs and the control DDMNs produce no skin irritation in rats.
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Almeida EDP, Santos Silva LA, de Araujo GRS, Montalvão MM, Matos SS, da Cunha Gonsalves JKM, de Souza Nunes R, de Meneses CT, Oliveira Araujo RG, Sarmento VHV, De Lucca W, Correa CB, Rodrigues JJ, Lira AAM. Chitosan-functionalized nanostructured lipid carriers containing chloroaluminum phthalocyanine for photodynamic therapy of skin cancer. Eur J Pharm Biopharm 2022; 179:221-231. [PMID: 36122783 DOI: 10.1016/j.ejpb.2022.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/19/2022] [Accepted: 09/12/2022] [Indexed: 11/26/2022]
Abstract
The objective of this study was to obtain optimized nanostructured lipid carriers (NLC) functionalized with chitosan containing chloroaluminum phthalocyanine (ClAlPc) as a photosensitizer. Initially, the optimization of the preparation method of the NLC was performed, where the influence of different surfactants such as PVA and Tween 80, as well as different solid lipids such as stearic acid and Glycerol Monostearate (GM) was evaluated. The formulation containing GM and PVA (NLC10) was considered promising. Following, by the adsorption method (NLC10q), the formulation was functionalized with chitosan and characterized. NLC10 and NLC10q presented sizes of 131.5 and 231.5 nm, and ZP of -24.30 and + 19.96 mV, respectively. The encapsulation efficiency of NLC10q was 96 %, higher than NLC10 (79 %). The formulations were able to promote significant cutaneous retention of ClAlPc, after 2 h and 4 h of the study, and showed to be non-toxic to fibroblasts (biocompatible). PDT in BF16-F10 melanoma resulted in reduced cell viability to 70 % and 50 % for NLC10 and NLCq, respectively. In view of the results obtained, NLC showed to be promising in the treatment of skin cancer through PDT. NLC10q showed higher encapsulation efficiency and stability than NLC10, but, contrary to what was expected, it presented lower photodynamic efficiency.
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Affiliation(s)
| | - Luiz André Santos Silva
- Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe 49100-00, Brazil
| | | | | | - Saulo Santos Matos
- Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe 49100-00, Brazil
| | | | - Rogéria de Souza Nunes
- Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe 49100-00, Brazil
| | | | | | | | - Waldecy De Lucca
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe 49100-000, Brazil
| | - Cristiane Bani Correa
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe 49100-000, Brazil
| | - José Joatan Rodrigues
- Department of Physics, Federal University of Sergipe, São Cristóvão, Sergipe 49100-000, Brazil
| | - Ana Amélia Moreira Lira
- Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe 49100-00, Brazil.
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4
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Silva L, Dambros R, Leonardi G, Perrechil F. Biopolymer‐based microparticles for encapsulation of all‐
trans
‐retinoic acid. J Appl Polym Sci 2021. [DOI: 10.1002/app.51335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Letícia Silva
- Departamento de Engenharia Química Universidade Federal de São Paulo – UNIFESP Diadema Brazil
| | - Roberta Dambros
- Departamento de Engenharia Química Universidade Federal de São Paulo – UNIFESP Diadema Brazil
| | - Gislaine Leonardi
- Faculty of Pharmaceutical Sciences University of Campinas Campinas Brazil
| | - Fabiana Perrechil
- Departamento de Engenharia Química Universidade Federal de São Paulo – UNIFESP Diadema Brazil
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5
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Current Trends in Advanced Alginate-Based Wound Dressings for Chronic Wounds. J Pers Med 2021; 11:jpm11090890. [PMID: 34575668 PMCID: PMC8471591 DOI: 10.3390/jpm11090890] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/03/2021] [Accepted: 09/05/2021] [Indexed: 12/18/2022] Open
Abstract
Chronic wounds represent a major public health issue, with an extremely high cost worldwide. In healthy individuals, the wound healing process takes place in different stages: inflammation, cell proliferation (fibroblasts and keratinocytes of the dermis), and finally remodeling of the extracellular matrix (equilibrium between metalloproteinases and their inhibitors). In chronic wounds, the chronic inflammation favors exudate persistence and bacterial film has a special importance in the dynamics of chronic inflammation in wounds that do not heal. Recent advances in biopolymer-based materials for wound healing highlight the performance of specific alginate forms. An ideal wound dressing should be adherent to the wound surface and not to the wound bed, it should also be non-antigenic, biocompatible, semi-permeable, biodegradable, elastic but resistant, and cost-effective. It has to give protection against bacterial, infectious, mechanical, and thermal agents, to modulate the level of wound moisture, and to entrap and deliver drugs or other molecules This paper explores the roles of alginates in advanced wound-dressing forms with a particular emphasis on hydrogels, nanofibers networks, 3D-scaffolds or sponges entrapping fibroblasts, keratinocytes, or drugs to be released on the wound-bed. The latest research reports are presented and supported with in vitro and in vivo studies from the current literature.
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6
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Raghav S, Jain P, Kumar D. Alginates: Properties and Applications. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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7
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de la Vega L, Lee C, Sharma R, Amereh M, Willerth SM. 3D bioprinting models of neural tissues: The current state of the field and future directions. Brain Res Bull 2019; 150:240-249. [DOI: 10.1016/j.brainresbull.2019.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 05/30/2019] [Accepted: 06/06/2019] [Indexed: 01/01/2023]
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8
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Almeida EDP, Dipieri LV, Rossetti FC, Marchetti JM, Bentley MVLB, Nunes RDS, Sarmento VHV, Valerio MEG, Rodrigues Júnior JJ, Montalvão MM, Correa CB, Lira AAM. Skin permeation, biocompatibility and antitumor effect of chloroaluminum phthalocyanine associated to oleic acid in lipid nanoparticles. Photodiagnosis Photodyn Ther 2018; 24:262-273. [PMID: 30290231 DOI: 10.1016/j.pdpdt.2018.10.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/29/2018] [Accepted: 10/01/2018] [Indexed: 11/18/2022]
Abstract
The objective of this study was to develop and characterize lipid nanoparticles (LNs) containing chloroaluminum phthalocyanine (ClAlPc) to reduce the aggregation of the drug and improve its skin penetration and its antitumor effect. LNs were prepared and characterized by using stearic acid (SA) as solid lipid and oleic acid (OA) as liquid lipid in different proportions. in vitro and in vivo skin penetration was evaluated using modified Franz diffusion cells and fluorescence microscopy, respectively. in vitro biocompatibility and Photodynamic Therapy (PDT) were performed using L929-fibroblasts cell line and A549 cancer cell line and melanoma BF16-F10, respectively. OA promoted the increase in the encapsulation efficiency and drug loading, reaching values of 95.8% and 4%, respectively. The formulation with 40% OA (NLC 40) showed a significantly higher (p < 0.01) amount of drug retained in the skin compared to other formulations. All formulations developed were considered biocompatible. PDT evidenced the antitumor efficacy of NLC 40 with reduced cell viability for approximately 10% of cancer cells, demonstrating that the presence of OA in the NLC seems to potentialize this antitumor effect. PDT in BF16-F10 melanoma using NLC 40 resulted in a reduction in mean cell viability of approximately 99%. According to the results obtained, the systems developed may be promising for the incorporation of ClAlPc in the treatment of skin cancer by photodynamic therapy.
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Affiliation(s)
- Ellen Denise P Almeida
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-00, Brazil
| | - Lívia V Dipieri
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Fábia C Rossetti
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Juliana M Marchetti
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Maria Vitória L B Bentley
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, 14040-903, Brazil
| | - Rogéria de S Nunes
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-00, Brazil
| | - Víctor Hugo V Sarmento
- Departament of Chemistry, Federal University of Sergipe, Itabaiana, Sergipe, 49500-000, Brazil
| | - Mário Ernesto G Valerio
- Departament of Physics, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-000, Brazil
| | | | - Monalisa M Montalvão
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-000, Brazil
| | - Cristiane B Correa
- Department of Morphology, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-000, Brazil
| | - Ana Amélia M Lira
- Departament of Pharmacy, Federal University of Sergipe, São Cristóvão, Sergipe, 49100-00, Brazil.
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Szekalska M, Sosnowska K, Czajkowska-Kośnik A, Winnicka K. Calcium Chloride Modified Alginate Microparticles Formulated by the Spray Drying Process: A Strategy to Prolong the Release of Freely Soluble Drugs. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1522. [PMID: 30149531 PMCID: PMC6163791 DOI: 10.3390/ma11091522] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 11/16/2022]
Abstract
Alginate (ALG) cross-linking by CaCl₂ is a promising strategy to obtain modified-release drug delivery systems with mucoadhesive properties. However, current technologies to produce CaCl₂ cross-linked alginate microparticles possess major disadvantages, such as a poor encapsulation efficiency of water-soluble drugs and a difficulty in controlling the process. Hence, this study presents a novel method that streamlines microparticle production by spray drying; a rapid, continuous, reproducible, and scalable technique enabling obtainment of a product with low moisture content, high drug loading, and a high production yield. To model a freely water-soluble drug, metformin hydrochloride (MF) was selected. It was observed that MF was successfully encapsulated in alginate microparticles cross-linked by CaCl₂ using a one-step drying process. Modification of ALG provided drug release prolongation-particles obtained from 2% ALG cross-linked by 0.1% CaCl₂ with a prolonged MF rate of dissolution of up to 12 h. Cross-linking of the ALG microparticles structure by CaCl₂ decreased the swelling ratio and improved the mucoadhesive properties which were evaluated using porcine stomach mucosa.
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Affiliation(s)
- Marta Szekalska
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15222 Białystok, Poland.
| | - Katarzyna Sosnowska
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15222 Białystok, Poland.
| | - Anna Czajkowska-Kośnik
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15222 Białystok, Poland.
| | - Katarzyna Winnicka
- Department of Pharmaceutical Technology, Medical University of Białystok, Mickiewicza 2c, 15222 Białystok, Poland.
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Castleberry SA, Quadir MA, Sharkh MA, Shopsowitz KE, Hammond PT. Polymer conjugated retinoids for controlled transdermal delivery. J Control Release 2017; 262:1-9. [PMID: 28690160 PMCID: PMC5641977 DOI: 10.1016/j.jconrel.2017.07.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/30/2017] [Accepted: 07/05/2017] [Indexed: 10/19/2022]
Abstract
All-trans retinoic acid (ATRA), a derivative of vitamin A, is a common component in cosmetics and commercial acne creams as well as being a first-line chemotherapeutic agent. Today, formulations for the topical application of ATRA rely on creams and emulsions to incorporate the highly hydrophobic ATRA drug. These strategies, when applied to the skin, deliver ATRA as a single bolus, which is immediately taken up into the skin and contributes to many of the known adverse side effects of ATRA treatment, including skin irritation and hair loss. Herein we present a new concept in topical delivery of retinoids by covalently bonding the drug through a hydrolytically degradable ester linkage to a common hydrophilic polymer, polyvinyl alcohol (PVA), creating an amphiphilic nanomaterial that is water-soluble. This PVA bound ATRA can then act as a pro-drug and accumulate within the skin to allow for the sustained controlled delivery of active ATRA. This approach was demonstrated to release active ATRA out to 10days in vitro while significantly enhancing dermal accumulation of the ATRA in explant pig skin. In vivo we demonstrate that the pro-drug formulation reduces application site inflammation compared to free ATRA and retains the drug at the application site at measurable quantities for up to six days.
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Affiliation(s)
- Steven A Castleberry
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Koch Institute of Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA 02139, United States
| | - Mohiuddin A Quadir
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Koch Institute of Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Malak Abu Sharkh
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Kevin E Shopsowitz
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Koch Institute of Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
| | - Paula T Hammond
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Koch Institute of Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA 02139, United States.
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Carvalho ALM, Silva JAD, Lira AAM, Conceição TMF, Nunes RDS, de Albuquerque Junior RLC, Sarmento VHV, Leal LB, de Santana DP. Evaluation of Microemulsion and Lamellar Liquid Crystalline Systems for Transdermal Zidovudine Delivery. J Pharm Sci 2016; 105:2188-93. [DOI: 10.1016/j.xphs.2016.04.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/13/2016] [Accepted: 04/14/2016] [Indexed: 12/13/2022]
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12
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Enhancement of in vivo human skin penetration of resveratrol by chitosan-coated lipid microparticles. Colloids Surf B Biointerfaces 2015; 135:42-49. [PMID: 26241915 DOI: 10.1016/j.colsurfb.2015.07.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 06/30/2015] [Accepted: 07/17/2015] [Indexed: 01/26/2023]
Abstract
In this study, lipid microparticles (LMs) uncoated or coated with chitosan, and containing the antioxidant polyphenol, resveratrol were developed in order to enhance its in vivo skin permeation. The LMs loaded with resveratrol were prepared by melt emulsification and sonication, using tristearin as lipidic material and hydrogenated phosphatidylcholine as the surfactant. Two different methods were examined for the coating of the LMs: chitosan addition during LM preparation or treatment of already formed LMs with a chitosan solution. The latter method achieved a better modulation of the in vitro release of resveratrol and hence was used for subsequent studies. The resveratrol loading and mean diameter of the LMs were 4.1 ± 0.3% (w/w) and 5.7 μm and 3.8 ± 0.2 % (w/w) and 6.1 μm for the uncoated and the chitosan-coated LMs, respectively. Chitosan coating changed the LM surface charge, from a negative zeta potential value (-17.8 ± 4.8 mV) for the uncoated particles, to a higher positive values (+64.2 ± 4.4 mV) for the chitosan-coated ones. Creams containing resveratrol free, encapsulated in the uncoated or chitosan-coated LMs were applied to the forearm of human volunteers and the penetration of the polyphenol in the stratum corneum was investigated in vivo by the tape stripping technique. Uncoated LMs did not produce any significant increase in the fraction of the applied resveratrol dose diffused in the stratum corneum (32.8 ± 8.9 %) compared to the control cream containing the non-encapsulated polyphenol (26.2 ± 5.6 % of the applied dose). On the other hand, application of the cream containing the chitosan-coated LMs produced a significant enhancement in the in vivo permeation of resveratrol to 49.3 ± 5.9% of the applied dose, the effect being more marked in the upper region of the horny layer. The observed improvement in the human stratum corneum penetration of resveratrol achieved by the LMs coated with chitosan should favour the efficiency of its topical application.
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Development and evaluation of pH-sensitive sodium alginate/chitosan microparticles containing the antituberculosis drug rifampicin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 39:161-7. [DOI: 10.1016/j.msec.2014.01.054] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 12/10/2013] [Accepted: 01/30/2014] [Indexed: 11/22/2022]
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Sezer AD, Cevher E. Topical drug delivery using chitosan nano- and microparticles. Expert Opin Drug Deliv 2012; 9:1129-46. [DOI: 10.1517/17425247.2012.702752] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Alginate is a biomaterial that has found numerous applications in biomedical science and engineering due to its favorable properties, including biocompatibility and ease of gelation. Alginate hydrogels have been particularly attractive in wound healing, drug delivery, and tissue engineering applications to date, as these gels retain structural similarity to the extracellular matrices in tissues and can be manipulated to play several critical roles. This review will provide a comprehensive overview of general properties of alginate and its hydrogels, their biomedical applications, and suggest new perspectives for future studies with these polymers.
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Saraiva J, Lira AAM, Esperandim VR, da Silva Ferreira D, Ferraudo AS, Bastos JK, E Silva MLA, de Gaitani CM, de Albuquerque S, Marchetti JM. (-)-Hinokinin-loaded poly(D,-lactide-co-glycolide) microparticles for Chagas disease. Parasitol Res 2010; 106:703-8. [PMID: 20107838 DOI: 10.1007/s00436-010-1725-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Accepted: 01/04/2010] [Indexed: 11/29/2022]
Abstract
The (-)-hinokinin display high activity against Trypanosoma cruzi in vitro and in vivo. (-)-Hinokinin-loaded poly(D,L-lactide-co-glycolide) microparticles were prepared and characterized in order to protect (-)-hinokinin of biological interactions and promote its sustained release for treatment of Chagas disease. The microparticles contain (-)-hinokinin were prepared by the classical method of the emulsion/solvent evaporation. The scanning electron microscopy, light-scattering analyzer were used to study the morphology and particle size, respectively. The encapsulation efficiency was determined, drug release studies were kinetically evaluated, and the trypanocidal effect was evaluated in vivo. (-)-Hinokinin-loaded microparticles obtained showed a mean diameter of 0.862 microm with smooth surface and spherical shape. The encapsulation efficiency was 72.46 +/- 2.92% and developed system maintained drug release with Higuchi kinetics. The preparation method showed to be suitable, since the morphological characteristics, encapsulation efficiency, and in vitro release profile were satisfactory. In vivo assays showed significant reduction of mice parasitaemia after administration of (-)-hinokinin-loaded microparticles. Thus, the developed microparticles seem to be a promising system for sustained release of (-)-hinokinin for treatment of Chagas disease.
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Affiliation(s)
- Juliana Saraiva
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Avenida do Café s/n, 14040-903 Ribeirão Preto, SP, Brazil
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