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Hudiyanti D, Al Khafiz MF, Anam K, Siahaan P, Suyati L, Sunarsih S, Christa SM. Prospect of Gum Arabic-Cocoliposome Matrix to Encapsulate Curcumin for Oral Administration. Polymers (Basel) 2024; 16:944. [PMID: 38611202 PMCID: PMC11013629 DOI: 10.3390/polym16070944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Curcumin is an antioxidant that can effectively eliminate free radicals. However, as its oral bioavailability is low, an effective delivery method is required. Phospholipid-based liposomes can encapsulate lipophilic drugs, such as curcumin, while liposome, cholesterol, and gum Arabic (GA) can enhance the internal and external stability of drug membranes. This present study used concentrations of cholesterol (Cchol) and GA (CGA), ranging from 0 to 10, 20, 30, and 40% as well as 0 to 5, 10, 15, 20, 30, and 40%, respectively, to encapsulate curcumin in a GA-cocoliposome (CCL/GA) matrix and test its efficacy in simulated intestinal fluid (SIF) and simulated gastric fluid (SGF). The absence of new characteristic peaks in the Fourier transform infrared (FTIR) spectra results indicate the presence of non-covalent interactions in the CCL/GA encapsulation. Furthermore, increasing the Cchol decreased the encapsulation efficiency (EE), loading capacity (LC), and antioxidant activity (IR) of the CCL/GA encapsulation but increased its release rate (RR). Conversely, increasing CGA increased its EE and IR but decreased its LC and RR. The two conditions applied confirmed this. Liposomal curcumin had the highest IR in SIF (84.081%) and the highest RR in SGF (0.657 ppm/day). Furthermore, liposomes loaded with 10% Cchol and 20% CGA performed best in SIF, while those loaded with 10% Cchol and 30% CGA performed best in SGF. Lastly, the CCL/GA performed better in SIF than SGF.
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Affiliation(s)
- Dwi Hudiyanti
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia; (K.A.); (P.S.); (L.S.)
| | - Muhammad Fuad Al Khafiz
- Postgraduate Chemistry Program, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia;
| | - Khairul Anam
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia; (K.A.); (P.S.); (L.S.)
| | - Parsaoran Siahaan
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia; (K.A.); (P.S.); (L.S.)
| | - Linda Suyati
- Department of Chemistry, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia; (K.A.); (P.S.); (L.S.)
| | - Sunarsih Sunarsih
- Department of Mathematics, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia;
| | - Sherllyn Meida Christa
- Chemistry Program, Faculty of Science and Mathematics, Diponegoro University, Prof. Jacob Rais Street, Semarang 50275, Central Java, Indonesia;
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Bavnhøj CG, Knopp MM, Löbmann K. Effect of Drug Loading in Mesoporous Silica on Amorphous Stability and Performance. Pharmaceutics 2024; 16:163. [PMID: 38399225 PMCID: PMC10891643 DOI: 10.3390/pharmaceutics16020163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/02/2024] [Accepted: 01/12/2024] [Indexed: 02/25/2024] Open
Abstract
The encapsulation of drugs within mesoporous silica (MS) has for several years been a subject of research. Previous studies proposed that drug loadings up to the monomolecular loading capacity (MLC) are the optimal choice for maintaining the drug in an amorphous form, whereas filling the pores above the monolayer and up to the pore filling capacity (PFC) may introduce some physical instabilities. The aim of this study was to assess the effect of drug loading in MS-based amorphous formulations on the stability of the amorphous form of the drug as well as the dissolution. In particular, the following drug loadings were investigated: below MLC, at MLC, between MLC and PFC and at PFC. The drug-loaded MS formulations were analyzed directly after preparation and after 18 months of storage under accelerated conditions (40 °C in both dry and humid conditions). The MLC and PFC for the drug celecoxib (CEL) on the MS ParteckSLC500 (SLC) were determined at 33.5 wt.% and 48.4 wt.%, respectively. This study found that SLC can effectively preserve the amorphous form of the drug for 18 months, provided that the loading is below the PFC (<48.4 wt.%) and no humidity is present. On the other hand, drug loading at the PFC showed recrystallization even when stored under dry conditions. Under humid conditions, however, all samples, regardless of drug loading, showed recrystallization upon storage. In terms of dissolution, all freshly prepared formulations showed supersaturation. For drug loadings below PFC, a degree of supersaturation (DS) around 15 was measured before precipitation was observed. For drug loadings at PFC, the DS was found to be lower and only 6-times compared to the crystalline solubility. Lastly, for those samples that remained amorphous during storage for 18 months, the release profiles were found to be the same as the freshly loaded samples, with similar Cmax, Tmax and dissolution rate.
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Affiliation(s)
| | | | - Korbinian Löbmann
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
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Hennig CL, Stöcker A, Nitzsche A, Marquetand J, Jacobs C, Jahn F. Influence of Root Post Materials and Aging on Fracture Strength and Marginal Gap Quality of Ceramic Crowns-An In Vitro Study. Materials (Basel) 2023; 16:ma16113985. [PMID: 37297118 DOI: 10.3390/ma16113985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/22/2023] [Accepted: 05/24/2023] [Indexed: 06/12/2023]
Abstract
The design of and materials for prosthodontic abutments and posts have significant influences on the fracture resistance of restored teeth. This in vitro study compared the fracture strength and marginal quality of full-ceramic crowns as a function of the inserted root posts via simulation of a five-year period of use. Test specimens were prepared from 60 extracted maxillary incisors using titanium L9 (A), glass-fiber L9 (B), and glass-fiber L6 (C) root posts. The circular marginal gap behavior, linear loading capacity, and material fatigue after artificial aging were investigated. The marginal gap behavior and material fatigue were analyzed using electron microscopy. The linear loading capacity of the specimens was investigated using the Zwick Z005 universal testing machine. None of the tested root post materials showed statistically significant differences in marginal width values (p = 0.921), except in the case of marginal gap location. For Group A, there was a statistically significant difference from the labial to the distal (p = 0.012), mesial (p = 0.000), and palatinal (p = 0.005). Similarly, Group B showed a statistically significant difference from the labial to the distal (p = 0.003), mesial (p = 0.000), and palatinal (p = 0.003). Group C showed a statistically significant difference from the labial to the distal (p = 0.001) and mesial (p = 0.009). Linear load capacity reached mean values of 455.8-537.7 N, and micro-cracks occurred after artificial aging, predominantly in Groups B and C. Through the chosen experimental design, it was shown that the root post material and root post length had no influence on the fracture strength of the test teeth before or after artificial aging. However, the marginal gap location depends on the root post material and its length, which is wider mesially and distally and also tends to be greater palatinally than labially.
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Affiliation(s)
- Christoph-Ludwig Hennig
- Department of Orthodontics, Center of Dental Medicine, University Hospital Jena, An der alten Post 4, 07743 Jena, Germany
| | - André Stöcker
- Section of Geriodontics, Department of Conservative Dentistry and Periodontology, Center of Dental Medicine, University Hospital Jena, An der alten Post 4, 07743 Jena, Germany
| | - Ann Nitzsche
- Department of Orthodontics, Center of Dental Medicine, University Hospital Jena, An der alten Post 4, 07743 Jena, Germany
| | - Justus Marquetand
- Department of Epileptology, Hertie-Institute for Clinical Brain Research, University of Tübingen, 72076 Tübingen, Germany
- Department of Neural Dynamics and Magnetoencephalography, Hertie-Institute for Clinical Brain Research, University of Tübingen, 72076 Tübingen, Germany
- MEG-Center, University of Tübingen, 72076 Tübingen, Germany
| | - Collin Jacobs
- Department of Orthodontics, Center of Dental Medicine, University Hospital Jena, An der alten Post 4, 07743 Jena, Germany
| | - Florentine Jahn
- Section of Geriodontics, Department of Conservative Dentistry and Periodontology, Center of Dental Medicine, University Hospital Jena, An der alten Post 4, 07743 Jena, Germany
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Hudiyanti D, Al Khafiz MF, Anam K, Siahaan P, Christa SM. In Vitro Evaluation of Curcumin Encapsulation in Gum Arabic Dispersions under Different Environments. Molecules 2022; 27:3855. [PMID: 35744978 DOI: 10.3390/molecules27123855] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/11/2022] [Accepted: 06/12/2022] [Indexed: 11/17/2022]
Abstract
Biopolymers, especially polysaccharides (e.g., gum Arabic), are widely applied as drug carriers in drug delivery systems due to their advantages. Curcumin, with high antioxidant ability but limited solubility and bioavailability in the body, can be encapsulated in gum Arabic to improve its solubility and bioavailability. When curcumin is encapsulated in gum Arabic, it is essential to understand how it works in various conditions. As a result, in Simulated Intestinal Fluid and Simulated Gastric Fluid conditions, we investigated the potential of gum Arabic as the drug carrier of curcumin. This study was conducted by varying the gum Arabic concentrations, i.e., 5, 10, 15, 20, 30, and 40%, to encapsulate 0.1 mg/mL of curcumin. Under both conditions, the greater the gum Arabic concentration, the greater the encapsulation efficiency and antioxidant activity of curcumin, but the worse the gum Arabic loading capacity. To achieve excellent encapsulation efficiency, loading capacity, and antioxidant activity, the data advises that 10% is the best feasible gum Arabic concentration. Regarding the antioxidant activity of curcumin, the findings imply that a high concentration of gum Arabic was effective, and the Simulated Intestinal Fluid brought an excellent surrounding compared to the Simulated Gastric Fluid solution. Moreover, the gum Arabic releases curcumin faster in the Simulated Gastric Fluid condition.
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Aghamiri S, Noofeli M, Saffarian P, Salehi Najafabadi Z, Goudarzi HR. Investigating preparation and characterisation of diphtheria toxoid-loaded on sodium alginate nanoparticles. IET Nanobiotechnol 2022; 16:199-209. [PMID: 35610737 PMCID: PMC9178656 DOI: 10.1049/nbt2.12088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/18/2022] [Accepted: 05/05/2022] [Indexed: 11/30/2022] Open
Abstract
This paper aims to investigate the preparation and characterisation of the alginate nanoparticles (NPs) as antigen delivery system loaded by diphtheria toxoid (DT). For this purpose, both the loading capacity (LC) and Loading efficiency (LE) of the alginate NPs burdened by DT are evaluated. Moreover, the effects of different concentrations of sodium alginate and calcium chloride on the NPs physicochemical characteristics are surveyed in addition to other physical conditions such as homogenization time and rate. To do so, the NPs are characterised using particle size and distribution, zeta potential, scanning electron microscopy, encapsulation efficiency, in vitro release study and FT‐IR spectroscopy. Subsequently, the effects of homogenization time and rate on the NPs are assessed. At the meantime, the NPs LC and efficiency in several DT concentrations are estimated. The average size of the NPs was 400.7 and 276.6 nm for unloaded and DT loaded, respectively. According to the obtained results, the zeta potential of the blank and DT loaded NPs are estimated as −23.7 mV and −21.2 mV, respectively. Whereas, the LC and LE were >80% and >90%, in that order. Furthermore, 95% of the releasing DT loaded NPs occurs at 140 h in the sustained mode without any bursting release. It can be concluded that the features of NPs such as morphology and particle size are strongly depended on the calcium chloride, sodium alginate concentrations and physicochemical conditions in the NPs formation process. In addition, appropriate concentrations of the sodium alginate and calcium ions would lead to obtaining the desirable NPs formation associated with the advantageous LE, LC (over 80%) and sustained in vitro release profile. Ultimately, the proposed NPs can be employed in vaccine formulation for the targeted delivery, controlled and slow antigen release associated with the improved antigen stability.
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Affiliation(s)
- Samira Aghamiri
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mojtaba Noofeli
- Department of Research and Development, Razi Vaccine and Serum Research Institute, Agriculture Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Parvaneh Saffarian
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Zahra Salehi Najafabadi
- Department of Human Bacterial Vaccine, Razi Vaccine and Serum Research Institute, Agriculture Research Education and Extension Organization (AREEO), Karaj, Iran
| | - Hamid Reza Goudarzi
- Department of Research and Development, Razi Vaccine and Serum Research Institute, Agriculture Research Education and Extension Organization (AREEO), Karaj, Iran
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Yao L, Tang Y, Cao W, Cui Y, Qian G. Highly Efficient Encapsulation of Doxorubicin Hydrochloride in Metal-Organic Frameworks for Synergistic Chemotherapy and Chemodynamic Therapy. ACS Biomater Sci Eng 2021; 7:4999-5006. [PMID: 34550683 DOI: 10.1021/acsbiomaterials.1c00874] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Iron-based metal-organic frameworks (MOFs) have been reported to have great potential for encapsulating doxorubicin hydrochloride (DOX), which is a frequently used anthracycline anticancer drug. However, developing a facile approach to realize high loading capacity and efficiency as well as controlled release of DOX in MOFs remains a huge challenge. Herein, we synthesized water-stable MIL-101(Fe)-C4H4 through a microwave-assisted method. It was found the nano-MOFs acted as nanosponges when soaked in a DOX alkaline aqueous solution with a loading capacity experimentally up to 24.5 wt %, while maintaininga loading efficiency as high as 98%. The mechanism of the interaction between DOX and nanoMOFs was investigated by absorption spectra and density functional theory (DFT) calculations, which revealed that the deprotonated DOX was electrostatically adsorbed to the unsaturated Fe3OCl(COO)6·H2O (named Fe3 trimers). In addition, the as-designed poly(ethylene glycol-co-propylene glycol) (F127) modified nanoparticles (F127-DOX-MIL) could be decomposed under the stimulation of glutathione (GSH) and ATP. As a result, DOX and Fe(III) ions were released, and they could undergo a Fenton-like reaction with the endogenous H2O2 to generate the highly toxic hydroxyl radical (·OH). The in vitro experiments indicated that F127-DOX-MIL could cause remarkable Hela cells inhibition through chemotherapy and chemodynamic therapy. Our study provides a new strategy to design a GSH/ATP-responsive drug-delivery nanosystem for chemo/chemodynamic therapy.
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Affiliation(s)
- Lijia Yao
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Ying Tang
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Wenqian Cao
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yuanjing Cui
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
| | - Guodong Qian
- State Key Laboratory of Silicon Materials, Cyrus Tang Center for Sensor Materials and Applications, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
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Chang PK, Tsai MF, Huang CY, Lee CL, Lin C, Shieh CJ, Kuo CH. Chitosan-Based Anti-Oxidation Delivery Nano-Platform: Applications in the Encapsulation of DHA-Enriched Fish Oil. Mar Drugs 2021; 19:md19080470. [PMID: 34436309 PMCID: PMC8400499 DOI: 10.3390/md19080470] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 08/20/2021] [Accepted: 08/20/2021] [Indexed: 01/13/2023] Open
Abstract
Refined cobia liver oil is a nutritional supplement (CBLO) that is rich in polyunsaturated fatty acids (PUFAs), such as DHA and EPA; however, PUFAs are prone to oxidation. In this study, the fabrication of chitosan-TPP-encapsulated CBLO nanoparticles (CS@CBLO NPs) was achieved by a two-step method, including emulsification and the ionic gelation of chitosan with sodium tripolyphosphate (TPP). The obtained nanoparticles were inspected by dynamic light scattering (DLS) and showed a positively charged surface with a z-average diameter of between 174 and 456 nm. Thermogravimetric analysis (TGA) results showed the three-stage weight loss trends contributing to the water evaporation, chitosan decomposition, and CBLO decomposition. The loading capacity (LC) and encapsulation efficiency (EE) of the CBLO loading in CS@CBLO NPs were 17.77-33.43% and 25.93-50.27%, respectively. The successful encapsulation of CBLO in CS@CBLO NPs was also confirmed by the Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) techniques. The oxidative stability of CBLO and CS@CBLO NPs was monitored by FTIR. As compared to CBLO, CS@CBLO NPs showed less oxidation with a lower generation of hydroperoxides and secondary oxidation products after four weeks of storage. CS@CBLO NPs are composed of two ingredients that are beneficial for health, chitosan and fish oil in a nano powdered fish oil form, with an excellent oxidative stability that will enhance its usage in the functional food and pharmaceutical industries.
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Affiliation(s)
- Po-Kai Chang
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan; (P.-K.C.); (M.-F.T.); (C.-Y.H.)
| | - Ming-Fong Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan; (P.-K.C.); (M.-F.T.); (C.-Y.H.)
| | - Chun-Yung Huang
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan; (P.-K.C.); (M.-F.T.); (C.-Y.H.)
| | - Chien-Liang Lee
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan;
| | - Chitsan Lin
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan;
| | - Chwen-Jen Shieh
- Biotechnology Center, National Chung Hsing University, Taichung 402, Taiwan;
| | - Chia-Hung Kuo
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan; (P.-K.C.); (M.-F.T.); (C.-Y.H.)
- Center for Aquatic Products Inspection Service, National Kaohsiung University of Science and Technology, Kaohsiung 811, Taiwan
- Correspondence: ; Tel.: +886-7-3617141 (ext. 23646); Fax: +886-7-3640634
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Xiao Z, Bao H, Jia S, Bao Y, Niu Y, Kou X. Organic Hollow Mesoporous Silica as a Promising Sandalwood Essential Oil Carrier. Molecules 2021; 26:2744. [PMID: 34067007 PMCID: PMC8125090 DOI: 10.3390/molecules26092744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/23/2021] [Accepted: 05/03/2021] [Indexed: 12/04/2022] Open
Abstract
As film-forming agents, fillers and adsorbents, microplastics are often added to daily personal care products. Because of their chemical stability, they remain in the environment for thousands of years, endangering the safety of the environment and human health. Therefore, it is urgent to find an environmentally friendly substitute for microplastics. Using n-octyltrimethoxysilane (OTMS) and tetraethoxysilane (TEOS) as silicon sources, a novel, environmentally friendly, organic hollow mesoporous silica system is designed with a high loading capacity and excellent adsorption characteristics in this work. In our methodology, sandalwood essential oil (SEO) was successfully loaded into the nanoparticle cavities, and was involved in the formation of Pickering emulsion as well, with a content of up to 40% (w/w). The developed system was a stable carrier for the dispersion of SEO in water. This system can not only overcome the shortcomings of poor water solubility and volatility of sandalwood essential oil, but also act as a microplastic substitute with broad prospects in the cosmetics and personal care industry, laying a foundation for the preparation and applications of high loading capacity microcapsules in aqueous media.
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Affiliation(s)
| | | | | | | | | | - Xingran Kou
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China; (Z.X.); (H.B.); (S.J.); (Y.B.); (Y.N.)
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Suzuki S, Lee S, Miyajima T, Kato K, Sugawara-Narutaki A, Sakurai M, Nagata F. Evaluation of Drug-Loading Ability of Poly(Lactic Acid)/Hydroxyapatite Core-Shell Particles. Materials (Basel) 2021; 14:1959. [PMID: 33919727 PMCID: PMC8070725 DOI: 10.3390/ma14081959] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 04/01/2021] [Accepted: 04/12/2021] [Indexed: 12/12/2022]
Abstract
Poly(lactic acid)/hydroxyapatite (PLA/HAp) core-shell particles are prepared using the emulsification method. These particles are safe for living organisms because they are composed of biodegradable polymers and biocompatible ceramics. These particles are approximately 50-100 nm in size, and their hydrophobic substance loading can be controlled. Hence, PLA/HAp core-shell particles are expected to be used as drug delivery carriers for hydrophobic drugs. In this work, PLA/HAp core-shell particles with a loading of vitamin K1 were prepared, and their drug-loading ability was evaluated. The particles were 40-80 nm in diameter with a PLA core and a HAp shell. The particle size increased with an increase in the vitamin K1 loading. The drug-loading capacity (LC) value of the particles, an indicator of their drug-loading ability, was approximately 250%, which is higher than the previously reported values. The amount of vitamin K1 released from the particles increased as the pH of the soaking solution decreased because the HAp shell easily dissolved under the acidic conditions. The PLA/HAp particles prepared in this work were found to be promising candidates for drug delivery carriers because of their excellent drug-loading ability and pH sensitivity.
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Affiliation(s)
- Seiya Suzuki
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan; (S.S.); (T.M.); (K.K.)
- Department of Applied Chemistry, College of Engineering, Chubu University, Matsumoto-cho, Kasugai 487-8501, Japan;
| | - Sungho Lee
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan; (S.S.); (T.M.); (K.K.)
| | - Tatsuya Miyajima
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan; (S.S.); (T.M.); (K.K.)
| | - Katsuya Kato
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan; (S.S.); (T.M.); (K.K.)
| | - Ayae Sugawara-Narutaki
- Department of Energy Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan;
| | - Makoto Sakurai
- Department of Applied Chemistry, College of Engineering, Chubu University, Matsumoto-cho, Kasugai 487-8501, Japan;
| | - Fukue Nagata
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98 Anagahora, Shimoshidami, Moriyama-ku, Nagoya 463-8560, Japan; (S.S.); (T.M.); (K.K.)
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Cotugno P, Massari F, Aresta A, Zambonin C, Ragni R, Monks K, Avagyan L, Böttcher J. Advanced Gel Permeation Chromatography system with increased loading capacity: Polycyclic aromatic hydrocarbons detection in olive oil as a case of study. J Chromatogr A 2021; 1639:461920. [PMID: 33530008 DOI: 10.1016/j.chroma.2021.461920] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/14/2021] [Accepted: 01/16/2021] [Indexed: 11/26/2022]
Abstract
Gel permeation chromatography (GPC) is herein used as size exclusion clean-up technique for highly sensitive and straightforward detection of Polycyclic Aromatic Hydrocarbons (PAHs) in olive oil samples. An advanced chromatographic system has been developed to isolate a series of PAHs with cancerogenic potential, including PAH4 (benzo(a)pyrene BaP, benzo(a)anthracene BaA, benzo(b)fluoranthene BbF and chrysene Chry) reported in the European Regulation. The system avails of two glass chromatographic columns and a switching valve, that allow removal of interfering analytes in olive oil without resorting to any preliminary extraction process. A seven-fold increase of the loaded sample amount versus conventional chromatographic systems (1 g vs 0.150 g) has been pursued, as well as improved PAHs detection and quantification limits (LOD-LOQ for PAH4: 0.21-0.70 ng/g for BaA, 0.26-0.86 ng/g for Chry, 0.23-0.76 ng/g for BbF, 0.32-1.06 ng/g for BaP), in accordance with the continuous need of more and more reducing these limits in food analysis by the European Regulation. The protocol developed represents a highly innovative and efficient analytical method for organic pollutants in complex biological matrices as olive oil, that can have huge impact on technology for PAHs detection in food samples, being suitable for both industrial and small-scale laboratories.
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Affiliation(s)
- Pietro Cotugno
- Dipartimento di Biologia, Università degli Studi di Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy.
| | - Federica Massari
- Dipartimento di Biologia, Università degli Studi di Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Antonella Aresta
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Carlo Zambonin
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Roberta Ragni
- Dipartimento di Chimica, Università degli Studi di Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Kate Monks
- KNAUER Wissenschaftliche Geräte GmbH, Hegauer Weg 38, 14163 Berlin, Germany
| | - Lilit Avagyan
- KNAUER Wissenschaftliche Geräte GmbH, Hegauer Weg 38, 14163 Berlin, Germany
| | - Juliane Böttcher
- KNAUER Wissenschaftliche Geräte GmbH, Hegauer Weg 38, 14163 Berlin, Germany
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11
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Yang C, Yan H, Jiang X, Xu H, Tsao R, Zhang L. Preparation of 9 Z-β-Carotene and 9 Z-β-Carotene High-Loaded Nanostructured Lipid Carriers: Characterization and Storage Stability. J Agric Food Chem 2020; 68:13844-13853. [PMID: 33164495 DOI: 10.1021/acs.jafc.0c02342] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cis (Z)-β-carotenes with 25.3% 9Z-β-carotene were prepared for nanostructured lipid carriers (NLCs). The optimal conditions for NLC preparation using an orthogonal experimental method were as follows: the total lipid concentration was 9% (w/v), the surfactant concentration was 1.4% (w/v), the solid to liquid lipid ratio was 3:1 (w/w), and the homogenization pressure was set at 500 bar for three cycles. Under these conditions, the encapsulation efficiency (%) of the NLC was 95.64%, and the total β-carotene in NLCs was 2.9 mg/mL, which was significantly higher than those reported by others. The proportion of total Z-β-carotenes was as high as 53.3%, the particle size was 191 ± 6.46 nm, and the polydispersity index was 0.2 ± 0.03. Storage stability results indicated that the β-carotene-loaded NLC stabilizes both 9Z-β-carotene and total β-carotene from leakage and degradation during 21 days of storage at pH 3.5-7.5 at low temperatures (4 °C), especially for the more bioactive 9Z-β-carotene. The technique with an improved ratio of 9Z-β-carotene, loading capacity, water solubility, and bioaccessibility of the β-carotene NLC provides an effective strategy for β-carotene applications in functional foods or beverages and in nutraceutical preparations.
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Affiliation(s)
- Cheng Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongxiao Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xin Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Huaneng Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Rong Tsao
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, Ontario N1G 5C9, Canada
| | - Lianfu Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Wuxi, Jiangsu 214122, China
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12
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Grohmann S, Menne M, Hesse D, Bischoff S, Schiffner R, Diefenbeck M, Liefeith K. Biomimetic multilayer coatings deliver gentamicin and reduce implant-related osteomyelitis in rats. ACTA ACUST UNITED AC 2019; 64:383-395. [PMID: 30173199 DOI: 10.1515/bmt-2018-0044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 07/16/2018] [Indexed: 02/01/2023]
Abstract
Implant-related infections like periprosthetic joint infections (PJI) are still a challenging issue in orthopedic surgery. In this study, we present a prophylactic anti-infective approach based on a local delivery of the antibiotic gentamicin. The local delivery is achieved via a nanoscale polyelectrolyte multilayer (PEM) coating that leaves the bulk material properties of the implant unaffected while tuning the surface properties. The main components of the coating, i.e. polypeptides and sulfated glycosaminoglycans (sGAG) render this coating both biomimetic (matrix mimetic) and biodegradable. We show how adaptions in the conditions of the multilayer assembly process and the antibiotic loading process affect the amount of delivered gentamicin. The highest concentration of gentamicin could be loaded into films composed of polypeptide poly-glutamic acid when the pH of the loading solution was acidic. The concentration of gentamicin on the surface could be tailored with the number of deposited PEM layers. The resulting coatings reveal a bacteriotoxic effect on Staphylococcus cells but show no signs of cytotoxic effects on MC3T3-E1 osteoblasts. Moreover, when multilayer-coated titanium rods were implanted into contaminated medullae of rat tibiae, a reduction in the development of implant-related osteomyelitis was observed. This reduction was more pronounced for the multifunctional, matrix-mimetic heparin-based coatings that only deliver lower amounts of gentamicin.
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Affiliation(s)
- Steffi Grohmann
- Institute for Bioprocessing and Analytical Measurement Techniques (iba) e.V., Department of Biomaterials, 37308 Heilbad Heiligenstadt, Germany
| | - Manuela Menne
- Institute for Bioprocessing and Analytical Measurement Techniques (iba) e.V., Department of Biomaterials, 37308 Heilbad Heiligenstadt, Germany
| | - Diana Hesse
- Institute for Bioprocessing and Analytical Measurement Techniques (iba) e.V., Department of Biomaterials, 37308 Heilbad Heiligenstadt, Germany
| | - Sabine Bischoff
- Institute for Laboratory Animal Science and Welfare, University Hospital, 07743 Jena, Germany
| | - René Schiffner
- Orthopaedic Department, University Hospital, 07743 Jena, Germany
| | - Michael Diefenbeck
- Scientific Consulting in Orthopaedic Surgery and Traumatology, 22081 Hamburg, Germany
| | - Klaus Liefeith
- Institute for Bioprocessing and Analytical Measurement Techniques (iba) e.V., Department of Biomaterials, 37308 Heilbad Heiligenstadt, Germany
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13
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Makoni PA, Wa Kasongo K, Walker RB. Short Term Stability Testing of Efavirenz-Loaded Solid Lipid Nanoparticle (SLN) and Nanostructured Lipid Carrier (NLC) Dispersions. Pharmaceutics 2019; 11:E397. [PMID: 31398820 DOI: 10.3390/pharmaceutics11080397] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/05/2019] [Accepted: 08/05/2019] [Indexed: 11/17/2022] Open
Abstract
The short term stability of efavirenz-loaded solid lipid nanoparticle and nanostructured lipid carrier dispersions was investigated. Hot High Pressure Homogenization with the capability for scale up production was successfully used to manufacture the nanocarriers without the use of toxic organic solvents for the first time. Glyceryl monostearate and Transcutol® HP were used as the solid and liquid lipids. Tween® 80 was used to stabilize the lipid nanocarriers. A Box-Behnken Design was used to identify the optimum operating and production conditions viz., 1100 bar for 3 cycles for the solid lipid nanoparticles and 1500 bar for 5 cycles for nanostructured lipid carriers. The optimized nanocarriers were predicted to exhibit 10% efavirenz loading with 3% and 4% Tween® 80 for solid lipid nanoparticles and nanostructured lipid carriers, respectively. Characterization of the optimized solid lipid nanoparticle and nanostructured lipid carrier formulations in relation to shape, surface morphology, polymorphism, crystallinity and compatibility revealed stable formulations with particle sizes in the nanometer range had been produced. The nanocarriers had excellent efavirenz loading with the encapsulation efficiency >90%. The optimized nanocarriers exhibited biphasic in vitro release patterns with an initial burst release during the initial 0-3 h followed by sustained release over a 24 h period The colloidal systems showed excellent stability in terms of Zeta potential, particle size, polydispersity index and encapsulation efficiency when stored for 8 weeks at 25 °C/60% RH in comparison to when stored at 40 °C/75% RH. The formulations manufactured using the optimized conditions and composition proved to be physically stable as aqueous dispersions.
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14
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Chen YS, Chiu YH, Li YS, Lin EY, Hsieh DK, Lee CH, Huang MH, Chuang HM, Lin SZ, Harn HJ, Chiou TW. Integration of PEG 400 into a self-nanoemulsifying drug delivery system improves drug loading capacity and nasal mucosa permeability and prolongs the survival of rats with malignant brain tumors. Int J Nanomedicine 2019; 14:3601-3613. [PMID: 31190814 PMCID: PMC6530554 DOI: 10.2147/ijn.s193617] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 03/21/2019] [Indexed: 12/19/2022] Open
Abstract
Introduction: Kolliphor® EL (K-EL) is among the most useful surfactants in the preparation of emulsions. However, it is associated with low hydrophobic drug loading in the resulting emulsified formulation. Methods: In this study, a formulation for intranasal administration of butylidenephthalide (Bdph), a candidate drug against glioblastoma (GBM), was prepared. Physical characteristics of the formulation such as particle size, zeta potential, conductivity, and viscosity were assessed, as well as its cytotoxicity and permeability, in order to optimize the formulation and improve its drug loading capacity. Results: The optimized formulation involved the integration of polyethylene glycol 400 (PEG 400) in K-EL to encapsulate Bdph dissolved in dimethyl sulfoxide (DMSO), and it exhibited higher drug loading capacity and drug solubility in water than the old formulation, which did not contain PEG 400. Incorporation of PEG 400 as a co-surfactant increased Bdph loading capacity to up to 50% (v/v), even in formulations using Kolliphor® HS 15 (K-HS15) as a surfactant, which is less compatible with Bdph than K-EL. The optimized Bdph formulation presented 5- and 2.5-fold higher permeability and cytotoxicity, respectively, in human GBM than stock Bdph. This could be attributed to the high drug loading capacity and the high polarity index due to DMSO, which increases the compatibility between the drug and the cell. Rats bearing a brain glioma treated with 160 mg/kg intranasal emulsified Bdph had a mean survival of 37 days, which is the same survival time achieved by treatment with 320 mg/kg stock Bdph. This implies that the optimized emulsified formulation required only half the Bdph dose to achieve an efficacy similar to that of stock Bdph in the treatment of animals with malignant brain tumor.
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Affiliation(s)
- Yu-Shuan Chen
- Bioinnovation Center, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China.,Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China.,Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China
| | - Yu-Han Chiu
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China
| | - Yuan-Sheng Li
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China
| | - En-Yi Lin
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China.,Department of Chemistry, National Dong Hwa University, Hualien, Taiwan, Republic of China
| | - Dean-Kuo Hsieh
- Department and Graduate Institute of Applied Chemistry, Chaoyang University of Technology, Taichung, Taiwan, Republic of China
| | - Chia-Hung Lee
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China
| | - Mao-Hsuan Huang
- Bioinnovation Center, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China
| | - Hong-Meng Chuang
- Bioinnovation Center, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China
| | - Shinn-Zong Lin
- Bioinnovation Center, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China.,Department of Neurosurgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China
| | - Horng-Jyh Harn
- Bioinnovation Center, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan, Republic of China.,Department of Pathology, Hualien Tzu Chi Hospital, Tzu Chi University, Hualien, Taiwan, Republic of China
| | - Tzyy-Wen Chiou
- Department of Life Science and Graduate Institute of Biotechnology, National Dong Hwa University, Hualien, Taiwan, Republic of China
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15
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Dabbagh A, Hedayatnasab Z, Karimian H, Sarraf M, Yeong CH, Madaah Hosseini HR, Abu Kasim NH, Wong TW, Rahman NA. Polyethylene glycol-coated porous magnetic nanoparticles for targeted delivery of chemotherapeutics under magnetic hyperthermia condition. Int J Hyperthermia 2018; 36:104-114. [PMID: 30428737 DOI: 10.1080/02656736.2018.1536809] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Although magnetite nanoparticles (MNPs) are promising agents for hyperthermia therapy, insufficient drug encapsulation efficacies inhibit their application as nanocarriers in the targeted drug delivery systems. In this study, porous magnetite nanoparticles (PMNPs) were synthesized and coated with a thermosensitive polymeric shell to obtain a synergistic effect of hyperthermia and chemotherapy. MATERIALS AND METHODS PMNPs were produced using cetyltrimethyl ammonium bromide template and then coated by a polyethylene glycol layer with molecular weight of 1500 Da (PEG1500) and phase transition temperature of 48 ± 2 °C to endow a thermosensitive behavior. The profile of drug release from the nanostructure was studied at various hyperthermia conditions generated by waterbath, magnetic resonance-guided focused ultrasound (MRgFUS), and alternating magnetic field (AMF). The in vitro cytotoxicity and hyperthermia efficacy of the doxorubicin-loaded nanoparticles (DOX-PEG1500-PMNPs) were assessed using human lung adenocarcinoma (A549) cells. RESULTS Heat treatment of DOX-PEG1500-PMNPs containing 235 ± 26 mg·g-1 DOX at 48 °C by waterbath, MRgFUS, and AMF, respectively led to 71 ± 4%, 48 ± 3%, and 74 ± 5% drug release. Hyperthermia treatment of the A549 cells using DOX-PEG1500-PMNPs led to 77% decrease in the cell viability due to the synergistic effects of magnetic hyperthermia and chemotherapy. CONCLUSION The large pores generated in the PMNPs structure could provide a sufficient space for encapsulation of the chemotherapeutics as well as fast drug encapsulation and release kinetics, which together with thermosensitive characteristics of the PEG1500 shell, make DOX-PEG1500-PMNPs promising adjuvants to the magnetic hyperthermia modality.
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Affiliation(s)
- Ali Dabbagh
- a School of Medicine, Faculty of Health and Medical Sciences , Taylor's University , Subang Jaya , Malaysia.,b Department of Materials Science and Engineering , Sharif University of Technology , Tehran , Iran
| | - Ziba Hedayatnasab
- c Department of Chemical Engineering, Faculty of Engineering , University of Malaya , Kuala Lumpur , Malaysia
| | - Hamed Karimian
- a School of Medicine, Faculty of Health and Medical Sciences , Taylor's University , Subang Jaya , Malaysia
| | - Masoud Sarraf
- d Department of Mechanical Engineering, Faculty of Engineering , University of Malaya , Kuala Lumpur , Malaysia
| | - Chai Hong Yeong
- a School of Medicine, Faculty of Health and Medical Sciences , Taylor's University , Subang Jaya , Malaysia
| | | | - Noor Hayaty Abu Kasim
- e Department of Restorative Dentistry, Faculty of Dentistry , University of Malaya , Kuala Lumpur , Malaysia.,f Health and Well-being Research Cluster, Institute of Research Management and Services , University of Malaya , Kuala Lumpur , Malaysia
| | - Tin Wui Wong
- g Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE , Universiti Teknologi MARA, Puncak Alam , Selangor , Malaysia
| | - Noorsaadah Abdul Rahman
- h Department of Chemistry, Faculty of Science , University of Malaya , Kuala Lumpur , Malaysia
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16
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Andonova V, Peneva P. Characterization Methods for Solid Lipid Nanoparticles (SLN) and Nanostructured Lipid Carriers (NLC). Curr Pharm Des 2017; 23:CPD-EPUB-86879. [PMID: 29141534 DOI: 10.2174/1381612823666171115105721] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/04/2017] [Accepted: 11/13/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Solid lipid nanoparticles (SLN) and the next generation of nanostructured lipid carriers (NLC) seem to be a very promising alternative to other colloidal carriers such as liposomes, microemulsions, and polymeric nanoparticles. These combine the advantages of the cited nanocarriers and can improve the dissolution rate in biological fluids, increase the drug absorption, improve the tissue distribution in the target organ, enhance the drug bioavailability and ensure controlled drug release. SLN and NLC can ensure higher drug stability in the harsh environment, cover the bitter taste of the drug, and reduce the first-pass-effect after oral administration. However, these carriers suffer from some disadvantages such as low drug loading capacity, drug expulsion, and unpredictable gelation tendency. METHODS This article aims to provide detail information about the process of complex characterization of SLN and NLC to produce an effective, quality and safe colloidal DDS with desired properties, based on the literature published in the period from 2000 to 2017. RESULTS Characterization techniques in terms of size and particle size distribution; surface morphology, functionalization, and zeta potential; structure, depending on the degree of crystallinity, lipid modification, drug incorporation and loading capacity; drug release; co-existence of other nano- and microstructures; and toxicity assessment according to the process of production, lipids and surfactants used and route of administration are discussed in the article. CONCLUSION The precise characterization of lipid nanocarriers as drug delivery systems ensures guarantees for the quality of the product as an effective and safe form. The typical composition of SLN and NLC requires a comprehensive approach of characterization and in-depth analysis of the results to perform a drug delivery system with desired properties.
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Affiliation(s)
- Velichka Andonova
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Medical University - Plovdiv, Plovdiv 4002. Bulgaria
| | - Petya Peneva
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Medical University - Plovdiv, Plovdiv 4002. Bulgaria
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17
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Matsuura A, Inoue S, Irimajiri M, Hodate K. Maximum permissible load for Kiso horses trotting over a short, straight course. Anim Sci J 2017; 89:232-236. [PMID: 28836316 DOI: 10.1111/asj.12893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 07/07/2017] [Indexed: 11/27/2022]
Abstract
This study aimed to determine the load-bearing capacity of trotting Kiso horses using gait analysis. Ten Kiso horses with a height at withers of 128 cm were included. Their riders were fitted with a marker (70 mm in diameter placed on their chest) recorded by two digital DVD cameras while trotting along a short, straight course. In total, eight tests were performed for each horse: the first with a 70 kg load; six with randomly loaded weights ranging 80-130 kg; and then a final test again with a 70 kg load. Three-dimensional movement of the marker was analyzed using a motion capture system. The time series of vertical displacement of the marker underwent spectrum analysis by the maximum entropy method, and the autocorrelation coefficient was calculated. The first two peaks of the autocorrelation were defined as symmetry and regularity, and their sum was defined as stability. Regularity in the 120 kg test (0.54) was lower than that in the first 70 kg test (0.61), and stability in the 120 kg test (1.31) was lower than that in the first 70 kg test (1.42). We concluded that the maximum permissible load for a trotting Kiso horse is < 120 kg, which represents 31% of its bodyweight.
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Affiliation(s)
- Akihiro Matsuura
- Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Sota Inoue
- Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Mami Irimajiri
- Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Japan
| | - Koichi Hodate
- Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Japan
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18
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Abstract
Graphene nanomaterials have been actively investigated for biomedical and biological applications, including that of cancer. Despite progress made, most of such studies are conducted on dispersed graphene nanosheets in solution. Consequently, the use of planar graphene films, especially in cancer research, has not been fully explored. Here, we investigate the cellular interactions between the graphene material films and breast cancer cell lines, specifically the effects these films have on cellular proliferation, spreading area, and cytotoxicity. We demonstrate that the graphene oxide (GO) film selectively accelerates the proliferation of both metastatic (MDA-MB-231) and nonmetastatic (MCF-7) breast cancer cells, but not that of noncancer breast epithelial cells (MCF-10A). Contrastingly, this accelerated proliferation is not observed with the use of graphene (G) film. Moreover, GO induces negligible cytotoxicity on these cells. We suggest that the observed phenomena originate from the synergistic effect resulted from the high loading capacity and conformational change of cellular attachment proteins on the GO film, and the high amount of oxygenated groups present in the material. We anticipate that our findings can further shed light on the graphene-cancer cellular interactions and provide better understanding for the future design and application of graphene-based nanomaterials in cancer research.
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Affiliation(s)
- Parthiv Kant Chaudhuri
- Mechanobiology Institute, National University of Singapore , Singapore 117411, Singapore
| | - Kian Ping Loh
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , Singapore 117546, Singapore
- Department of Chemistry, National University of Singapore , Singapore 117543, Singapore
| | - Chwee Teck Lim
- Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore , Singapore 117546, Singapore
- Department of Biomedical Engineering, National University of Singapore , Singapore 117575, Singapore
- Mechanobiology Institute, National University of Singapore , Singapore 117411, Singapore
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19
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Wang Y, Qin F, Tan H, Zhang Y, Jiang M, Lu M, Yao X. pH-responsive glycol chitosan-cross-linked carboxymethyl-β-cyclodextrin nanoparticles for controlled release of anticancer drugs. Int J Nanomedicine 2015; 10:7359-69. [PMID: 26677325 PMCID: PMC4677651 DOI: 10.2147/ijn.s91906] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Carboxymethyl-β-cyclodextrin (CMβ-CD)-modified glycol chitosan (GCS) nanoparticles (GCS-CMβ-CD NPs) were synthesized, and their pH-sensitive drug-release properties were investigated. GCS-CMβ-CD NPs could encapsulate doxorubicin hydrochloride (DOX), and the encapsulation efficiency and loading capacity increased with the amount of CMβ-CD. Drug-release studies indicate that DOX released was greater in acidic medium (pH 5.0) than in weakly basic medium (pH 7.4). The mechanism underlying the pH-sensitive properties of the carrier was analyzed. Finally, the MCF-7 (human breast cancer) and SW480 cell lines (human colon cancer) were used to evaluate the cytotoxicity of the NPs. The drug-loaded carriers show good inhibition of the growth of cancer cells compared with free DOX, and the carriers have good biocompatibility. In addition, the drug-loaded NPs have sustained drug-release properties. All these properties of the newly synthesized GCS-CMβ-CD NPs suggest a promising potential as an effective anticancer drug-delivery system for controlled drug release.
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Affiliation(s)
- Yiwen Wang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Fei Qin
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Haina Tan
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Yan Zhang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Miao Jiang
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Mei Lu
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Xin Yao
- School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
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20
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Abstract
![]()
Identification
of the usefulness of lipid-based formulations (LBFs)
for delivery of poorly water-soluble drugs is at date mainly experimentally
based. In this work we used a diverse drug data set, and more than
2,000 solubility measurements to develop experimental and computational
tools to predict the loading capacity of LBFs. Computational models
were developed to enable in silico prediction of
solubility, and hence drug loading capacity, in the LBFs. Drug solubility
in mixed mono-, di-, triglycerides (Maisine 35-1 and Capmul MCM EP)
correlated (R2 0.89) as well as the drug
solubility in Carbitol and other ethoxylated excipients (PEG400, R2 0.85; Polysorbate 80, R2 0.90; Cremophor EL, R2 0.93).
A melting point below 150 °C was observed to result in a reasonable
solubility in the glycerides. The loading capacity in LBFs was accurately
calculated from solubility data in single excipients (R2 0.91). In silico models, without the
demand of experimentally determined solubility, also gave good predictions
of the loading capacity in these complex formulations (R2 0.79). The framework established here gives a better
understanding of drug solubility in single excipients and of LBF loading
capacity. The large data set studied revealed that experimental screening
efforts can be rationalized by solubility measurements in key excipients
or from solid state information. For the first time it was shown that
loading capacity in complex formulations can be accurately predicted
using molecular information extracted from calculated descriptors
and thermal properties of the crystalline drug.
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Affiliation(s)
- Linda C Alskär
- Uppsala University Drug Optimization and Pharmaceutical Profiling Platform, Department of Pharmacy, Uppsala University , Uppsala Biomedical Center P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Christopher J H Porter
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University , 381 Royal Parade, Parkville, Victoria 3052, Australia
| | - Christel A S Bergström
- Uppsala University Drug Optimization and Pharmaceutical Profiling Platform, Department of Pharmacy, Uppsala University , Uppsala Biomedical Center P.O. Box 580, SE-751 23 Uppsala, Sweden.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University , 381 Royal Parade, Parkville, Victoria 3052, Australia
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Dudala TB, Yalavarthi PR, Vadlamudi HC, Thanniru J, Yaga G, Mudumala NL, Pasupati VK. A perspective overview on lipospheres as lipid carrier systems. Int J Pharm Investig 2014; 4:149-55. [PMID: 25426435 PMCID: PMC4241619 DOI: 10.4103/2230-973x.143112] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Both hydrophilic and lipophilic therapeutics can be delivered successfully into deep and peripheral tissues such as cerebrospinal fluid and central nervous system by encapsulating them with crystalline lipids as lipospheres. The advent of lipospheres was meant to deliver both therapeutic moieties with enhanced efficacy and added stability to reach out intended tissue areas. Although extensive information is available on physicochemical, analytical and biopharmaceutical aspects of lipospheres, there was no specific order pertaining to critical composition and rationale of component selection available for academic and pilot scale processing of lipospheres. With the interest of compiling key points in a typical formulation of lipid lipospheres, this article was intrigued to discuss melt method, co-solvent, microemulsion, super critical fluid, spray drying and spray congealing techniques that were employed to scale up lipospheres. The selection criteria for both the drugs and lipids in liposphere formulations were demonstrated here. The quality assessment with variables like loading capacity and entrapment efficiency was explained. A note on preliminary screening factors to determine the liposphere formation such as liposphere dimensions with morphological scenario was detailed in this article. This article also includes the stability and storage issues with reference to photolysis. The marked differential in enhancing solubility and permeability characteristics of Class II and IV drug candidates by liposphere delivery systems with an evident of in vivo outcomes were emphasized.
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Affiliation(s)
- Thushara Bindu Dudala
- Pharmaceutics Division, Sree Vidyankethan College of Pharmacy, Tirupati, Andhra Pradesh, India
| | | | | | - Jyotsna Thanniru
- Pharmaceutics Division, Sree Vidyankethan College of Pharmacy, Tirupati, Andhra Pradesh, India
| | - Gowri Yaga
- Pharmaceutics Division, Sree Vidyankethan College of Pharmacy, Tirupati, Andhra Pradesh, India
| | - Naga Lakshmi Mudumala
- Pharmaceutics Division, Sree Vidyankethan College of Pharmacy, Tirupati, Andhra Pradesh, India
| | - Vivek Kumar Pasupati
- Pharmaceutics Division, Sree Vidyankethan College of Pharmacy, Tirupati, Andhra Pradesh, India
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O'Connor A, Marsat JN, Mitrugno A, Flahive T, Moran N, Brayden D, Devocelle M. Poly(Ethylene glycol)-based backbones with high peptide loading capacities. Molecules 2014; 19:17559-77. [PMID: 25361422 PMCID: PMC6270934 DOI: 10.3390/molecules191117559] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 10/09/2014] [Accepted: 10/11/2014] [Indexed: 11/28/2022] Open
Abstract
Polymer-peptide conjugates are a promising class of compounds, where polymers can be used to overcome some of the limitations associated with peptides intended for therapeutic and/or diagnostic applications. Linear polymers such as poly(ethylene glycol) can be conjugated through terminal moieties and have therefore limited loading capacities. In this research, functionalised linear poly(ethylene glycol)s are utilised for peptide conjugation, to increase their potential loading capacities. These poly(ethylene glycol) derivatives are conjugated to peptide sequences containing representative side-chain functionalised amino acids, using different conjugation chemistries, including copper-catalysed azide-alkyne cycloaddition, amide coupling and thiol-ene reactions. Conjugation of a sequence containing the RGD motif to poly(allyl glycidyl ether) by the thiol-ene reaction, provided a conjugate which could be used in platelet adhesion studies.
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Affiliation(s)
- Aoife O'Connor
- Department of Pharmaceutical and Medicinal Chemistry, Centre for Synthesis and Chemical Biology, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - Jean-Noel Marsat
- Department of Pharmaceutical and Medicinal Chemistry, Centre for Synthesis and Chemical Biology, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - Annachiara Mitrugno
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - Tom Flahive
- Department of Pharmaceutical and Medicinal Chemistry, Centre for Synthesis and Chemical Biology, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - Niamh Moran
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
| | - David Brayden
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Marc Devocelle
- Department of Pharmaceutical and Medicinal Chemistry, Centre for Synthesis and Chemical Biology, Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin 2, Ireland.
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Persson LC, Porter CJH, Charman WN, Bergström CAS. Computational prediction of drug solubility in lipid based formulation excipients. Pharm Res 2013; 30:3225-37. [PMID: 23771564 PMCID: PMC3841656 DOI: 10.1007/s11095-013-1083-7] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 05/12/2013] [Indexed: 11/25/2022]
Abstract
PURPOSE To investigate if drug solubility in pharmaceutical excipients used in lipid based formulations (LBFs) can be predicted from physicochemical properties. METHODS Solubility was measured for 30 structurally diverse drug molecules in soybean oil (SBO, long-chain triglyceride; TGLC), Captex355 (medium-chain triglyceride; TGMC), polysorbate 80 (PS80; surfactant) and PEG400 co-solvent and used as responses during PLS model development. Melting point and calculated molecular descriptors were used as variables and the PLS models were validated with test sets and permutation tests. RESULTS Solvation capacity of SBO and Captex355 was equal on a mol per mol scale (R (2) = 0.98). A strong correlation was also found between PS80 and PEG400 (R (2) = 0.85), identifying the significant contribution of the ethoxylation for the solvation capacity of PS80. In silico models based on calculated descriptors were successfully developed for drug solubility in SBO (R (2) = 0.81, Q (2) = 0.76) and Captex355 (R (2) = 0.84, Q (2) = 0.80). However, solubility in PS80 and PEG400 were not possible to quantitatively predict from molecular structure. CONCLUSION Solubility measured in one excipient can be used to predict solubility in another, herein exemplified with TGMC versus TGLC, and PS80 versus PEG400. We also show, for the first time, that solubility in TGMC and TGLC can be predicted from rapidly calculated molecular descriptors.
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Affiliation(s)
- Linda C. Persson
- Department of Pharmacy, Drug Optimization and Pharmaceutical Profiling Platform Uppsala University, Uppsala Biomedical Center, P.O. Box 580, 751 23 Uppsala, Sweden
| | - Christopher J. H. Porter
- Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052 Australia
| | - William N. Charman
- Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052 Australia
| | - Christel A. S. Bergström
- Department of Pharmacy, Drug Optimization and Pharmaceutical Profiling Platform Uppsala University, Uppsala Biomedical Center, P.O. Box 580, 751 23 Uppsala, Sweden
- Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria 3052 Australia
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Aditya N, Vathsala P, Vieira V, Murthy R, Souto E. Advances in nanomedicines for malaria treatment. Adv Colloid Interface Sci 2013; 201-202:1-17. [PMID: 24192063 DOI: 10.1016/j.cis.2013.10.014] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Revised: 10/10/2013] [Accepted: 10/13/2013] [Indexed: 01/28/2023]
Abstract
Malaria is an infectious disease that mainly affects children and pregnant women from tropical countries. The mortality rate of people infected with malaria per year is enormous and became a public health concern. The main factor that has contributed to the success of malaria proliferation is the increased number of drug resistant parasites. To counteract this trend, research has been done in nanotechnology and nanomedicine, for the development of new biocompatible systems capable of incorporating drugs, lowering the resistance progress, contributing for diagnosis, control and treatment of malaria by target delivery. In this review, we discussed the main problems associated with the spread of malaria and the most recent developments in nanomedicine for anti-malarial drug delivery.
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