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Budiman A, Anastasya G, Handini AL, Lestari IN, Subra L, Aulifa DL. Characterization of Drug with Good Glass-Forming Ability Loaded Mesoporous Silica Nanoparticles and Its Impact Toward in vitro and in vivo Studies. Int J Nanomedicine 2024; 19:2199-2225. [PMID: 38465205 PMCID: PMC10924831 DOI: 10.2147/ijn.s453873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/18/2024] [Indexed: 03/12/2024] Open
Abstract
Solid oral dosage forms are mostly preferred in pharmaceutical formulation development due to patient convenience, ease of product handling, high throughput, low manufacturing costs, with good physical and chemical stability. However, 70% of drug candidates have poor water solubility leading to compromised bioavailability. This phenomenon occurs because drug molecules are often absorbed after dissolving in gastrointestinal fluid. To address this limitation, delivery systems designed to improve the pharmacokinetics of drug molecules are needed to allow controlled release and target-specific delivery. Among various strategies, amorphous formulations show significantly high potential, particularly for molecules with solubility-limited dissolution rates. The ease of drug molecules to amorphized is known as their glass-forming ability (GFA). Specifically, drug molecules categorized into class III based on the Taylor classification have a low recrystallization tendency and high GFA after cooling, with substantial "glass stability" when heated. In the last decades, the application of mesoporous silica nanoparticles (MSNs) as drug delivery systems (DDS) has gained significant attention in various investigations and the pharmaceutical industry. This is attributed to the unique physicochemical properties of MSNs, including high loading capacity, recrystallization inhibition, excellent biocompatibility, and easy functionalization. Therefore, this study aimed to discuss the current state of good glass former drug loaded mesoporous silica and shows its impact on the pharmaceutical properties including dissolution and physical stability, along with in vivo study. The results show the importance of determining whether mesoporous structures are needed in amorphous formulations to improve the pharmaceutical properties of drug with a favorable GFA.
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Affiliation(s)
- Arif Budiman
- Department of Pharmaceutics and Pharmaceutical Technology, Universitas Padjadjaran, Bandung, Indonesia
| | - Gracia Anastasya
- Department of Pharmaceutics and Pharmaceutical Technology, Universitas Padjadjaran, Bandung, Indonesia
| | - Annisa Luthfiyah Handini
- Department of Pharmaceutics and Pharmaceutical Technology, Universitas Padjadjaran, Bandung, Indonesia
| | - Ira Novianty Lestari
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Universitas Padjadjaran, Bandung, Indonesia
| | - Laila Subra
- Department of Pharmacy, Universiti Geomatika Malaysia, Kuala Lumpur, Malaysia
| | - Diah Lia Aulifa
- Department of Pharmaceutical Analysis and Medicinal Chemistry, Universitas Padjadjaran, Bandung, Indonesia
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2
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Enhanced Skin Penetration of Cannabidiol Using Organosilane Particles as Transdermal Delivery Vehicles. Pharmaceutics 2023; 15:pharmaceutics15030798. [PMID: 36986659 PMCID: PMC10057149 DOI: 10.3390/pharmaceutics15030798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 03/05/2023] Open
Abstract
There is potential for cannabidiol to act as an analgesic, anxiolytic and antipsychotic active ingredient; however, there is a need to find alternate administration routes to overcome its low oral bioavailability. In this work, we propose a new delivery vehicle based on encapsulation of cannabidiol within organosilica particles as drug delivery vehicles, which are subsequently incorporated within polyvinyl alcohol films. We investigated the long-term stability of the encapsulated cannabidiol, as well as its release rate, in a range of simulated fluids with different characterization techniques, including Fourier Transform Infrared (FT-IR) and High-performance Liquid Chromatography (HPLC). Finally, we determined the transdermal penetration in an ex vivo skin model. Our results show that cannabidiol is stable for up to 14 weeks within polyvinyl alcohol films at a range of temperatures and humidity. Release profiles are first-order, consistent with a mechanism involving diffusion of the cannabidiol (CBD) out of the silica matrix. The silica particles do not penetrate beyond the stratum corneum in the skin. However, cannabidiol penetration is enhanced and is detected in the lower epidermis, which was 0.41% of the total CBD in a PVA formulation compared with 0.27% for pure CBD. This is partly due to an improvement of its solubility profile as it is released from the silica particles, but we cannot rule out effects of the polyvinyl alcohol. Our design opens a route for new membrane technologies for cannabidiol and other cannabinoid products, where administration via non-oral or pulmonary routes can lead to better outcomes for patient cohorts in a range of therapeutics.
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3
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Vélez-Peña E, Morales R, Reyes-Escobar C, Torres CC, Avello M, Marrugo KP, Manzo-Merino J, Alderete JB, Campos CH. Mesoporous mixed oxides prepared by hard template methodology as novel drug delivery carriers for methotrexate. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Almasri R, Schultz HB, Møller A, Bremmell KE, Garcia-Bennett A, Joyce P, Prestidge CA. Role of Silica Intrawall Microporosity on Abiraterone Acetate Solubilization and In Vivo Oral Absorption. Mol Pharm 2022; 19:1091-1103. [PMID: 35238208 DOI: 10.1021/acs.molpharmaceut.1c00781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
SBA-15 mesoporous silica (MPS) has been widely used in oral drug delivery; however, it has not been utilized for solidifying lipid-based formulations, and the impact of their characteristic intrawall microporosity remains largely unexplored. Here, we derive the impact of the MPS microporosity on the in vitro solubilization and in vivo oral pharmacokinetics of the prostate cancer drug abiraterone acetate (AbA) when coencapsulated along with medium chain lipids into the pores. AbA in lipid (at 80% equilibrium solubility) was imbibed within a range of MPS particles (with comparable morphology and mesoporous structure but contrasting microporosity ranging from 0-247 m2/g), and their solid-state properties were characterized. Drug solubilization studies during in vitro lipolysis revealed that microporosity was the key factor in facilitating AbA solubilization by increasing the surface area available for drug-lipid diffusion. Interestingly, microporosity hindered hydrolysis of AbA to its active metabolite, abiraterone (Ab), under simulated intestinal conditions. This unique relationship between microporosity and AbA/Ab aqueous solubilization behavior was hypothesized to have significant implications on the subsequent bioavailability of the active metabolite. In vivo oral pharmacokinetics studies in male Sprague-Dawley rats revealed that MPS with moderate microporosity attained the highest relative bioavailability, while poor in vitro-in vivo correlations (IVIVC) existed between in vitro drug solubilization during lipolysis and in vivo AUC. Despite this, a reasonable IVIVC was established between the in vitro solubilization and in vivo Cmax, providing evidence for an association between silica microporosity and oral drug absorption.
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Affiliation(s)
- Ruba Almasri
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Hayley B Schultz
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Amalie Møller
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia.,Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Kristen E Bremmell
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia
| | | | - Paul Joyce
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Clive A Prestidge
- UniSA Clinical & Health Science, University of South Australia, Adelaide, South Australia 5000, Australia
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5
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Lau M, Sealy B, Combes V, Morsch M, Garcia-Bennett AE. Enhanced Antioxidant Effects of the Anti-Inflammatory Compound Probucol when Released from Mesoporous Silica Particles. Pharmaceutics 2022; 14:pharmaceutics14030502. [PMID: 35335878 PMCID: PMC8953917 DOI: 10.3390/pharmaceutics14030502] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 12/10/2022] Open
Abstract
Brain endothelial cells mediate the function and integrity of the blood brain barrier (BBB) by restricting its permeability and exposure to potential toxins. However, these cells are highly susceptible to cellular damage caused by oxidative stress and inflammation. Consequent disruption to the integrity of the BBB can lead to the pathogenesis of neurodegenerative diseases. Drug compounds with antioxidant and/or anti-inflammatory properties therefore have the potential to preserve the structure and function of the BBB. In this work, we demonstrate the enhanced antioxidative effects of the compound probucol when loaded within mesoporous silica particles (MSP) in vitro and in vivo zebrafish models. The dissolution kinetics were significantly enhanced when released from MSPs. An increased reduction in lipopolysaccharide (LPS)-induced reactive oxygen species (ROS), cyclooxygenase (COX) enzyme activity and prostaglandin E2 production was measured in human brain endothelial cells treated with probucol-loaded MSPs. Furthermore, the LPS-induced permeability across an endothelial cell monolayer by paracellular and transcytotic mechanisms was also reduced at lower concentrations compared to the antioxidant ascorbic acid. Zebrafish pre-treated with probucol-loaded MSPs reduced hydrogen peroxide-induced ROS to control levels after 24-h incubation, at significantly lower concentrations than ascorbic acid. We provide compelling evidence that the encapsulation of antioxidant and anti-inflammatory compounds within MSPs can enhance their release, enhance their antioxidant effects properties, and open new avenues for the accelerated suppression of neuroinflammation.
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Affiliation(s)
- Michael Lau
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia;
| | - Benjamin Sealy
- Malaria and Microvesicles Research Group, School of Life Science, Faculty of Science, University of Technology Sydney, Ultimo, Sydney, NSW 2007, Australia; (B.S.); (V.C.)
| | - Valery Combes
- Malaria and Microvesicles Research Group, School of Life Science, Faculty of Science, University of Technology Sydney, Ultimo, Sydney, NSW 2007, Australia; (B.S.); (V.C.)
| | - Marco Morsch
- Centre for Motor Neuron Disease Research, Department of Biomedical Sciences, Faculty of Medicine, Health and Human Sciences, Macquarie University, Sydney, NSW 2109, Australia;
| | - Alfonso E. Garcia-Bennett
- School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia;
- Australian Research Council Industrial Transformation Training Centre for Facilitated Advancement of Australia’s Bioactives (FAAB), Macquarie University, Sydney, NSW 2109, Australia
- Correspondence:
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Moroni I, Garcia-Bennett AE. Effects of Absorption Kinetics on the Catabolism of Melatonin Released from CAP-Coated Mesoporous Silica Drug Delivery Vehicles. Pharmaceutics 2021; 13:1436. [PMID: 34575512 PMCID: PMC8464897 DOI: 10.3390/pharmaceutics13091436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/03/2021] [Accepted: 09/03/2021] [Indexed: 11/16/2022] Open
Abstract
Melatonin (MLT) is a pineal hormone involved in the regulation of the sleep/wake cycle. The efficacy of exogenous MLT for the treatment of circadian and sleep disorders is variable due to a strong liver metabolism effect. In this work, MLT is encapsulated in mesoporous silica (AMS-6) with a loading capacity of 28.8 wt%, and the mesopores are blocked using a coating of cellulose acetate phthalate (CAP) at 1:1 and 1:2 AMS-6/MLT:CAP ratios. The release kinetics of MLT from the formulations is studied in simulated gastrointestinal fluids. The permeability of the MLT released from the formulations and its 6-hydroxylation are studied in an in vitro model of the intestinal tract (Caco-2 cells monolayer). The release of MLT from AMS-6/MLT:CAP 1:2 is significantly delayed in acidic environments up to 40 min, while remaining unaffected in neutral environments. The presence of CAP decreases the absorption of melatonin and increases its catabolism into 6-hydroxylation by the cytochrome P450 enzyme CYP1A2. The simple confinement of melatonin into AMS-6 pores slightly affects the permeability and significantly decreases melatonin 6-hydroxylation. Measurable amounts of silicon in the basolateral side of the Caco-2 cell monolayer might suggest the dissolution of AMS-6 during the experiment.
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Affiliation(s)
- Irene Moroni
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia;
| | - Alfonso E. Garcia-Bennett
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia;
- ARC Training Centre for Facilitated Advancement of Australia’s Bioactives (FAAB), Macquarie University, Sydney, NSW 2109, Australia
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7
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Trzeciak K, Chotera-Ouda A, Bak-Sypien II, Potrzebowski MJ. Mesoporous Silica Particles as Drug Delivery Systems-The State of the Art in Loading Methods and the Recent Progress in Analytical Techniques for Monitoring These Processes. Pharmaceutics 2021; 13:pharmaceutics13070950. [PMID: 34202794 PMCID: PMC8309060 DOI: 10.3390/pharmaceutics13070950] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/17/2022] Open
Abstract
Conventional administration of drugs is limited by poor water solubility, low permeability, and mediocre targeting. Safe and effective delivery of drugs and therapeutic agents remains a challenge, especially for complex therapies, such as cancer treatment, pain management, heart failure medication, among several others. Thus, delivery systems designed to improve the pharmacokinetics of loaded molecules, and allowing controlled release and target specific delivery, have received considerable attention in recent years. The last two decades have seen a growing interest among scientists and the pharmaceutical industry in mesoporous silica nanoparticles (MSNs) as drug delivery systems (DDS). This interest is due to the unique physicochemical properties, including high loading capacity, excellent biocompatibility, and easy functionalization. In this review, we discuss the current state of the art related to the preparation of drug-loaded MSNs and their analysis, focusing on the newest advancements, and highlighting the advantages and disadvantages of different methods. Finally, we provide a concise outlook for the remaining challenges in the field.
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Tallarek U, Hochstrasser J, Ziegler F, Huang X, Kübel C, Buchmeiser MR. Olefin Ring‐closing Metathesis under Spatial Confinement: Morphology−Transport Relationships. ChemCatChem 2020. [DOI: 10.1002/cctc.202001495] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ulrich Tallarek
- Department of Chemistry Philipps-Universität Marburg Hans-Meerwein-Strasse 4 D-35032 Marburg Germany
| | - Janika Hochstrasser
- Department of Chemistry Philipps-Universität Marburg Hans-Meerwein-Strasse 4 D-35032 Marburg Germany
| | - Felix Ziegler
- Institute of Polymer Chemistry Universität Stuttgart Pfaffenwaldring 55 D-70569 Stuttgart Germany
| | - Xiaohui Huang
- Institute of Nanotechnology and Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 D-76344 Eggenstein-Leopoldshafen Germany
| | - Christian Kübel
- Institute of Nanotechnology and Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 D-76344 Eggenstein-Leopoldshafen Germany
- Department of Materials and Earth Sciences Technische Universität Darmstadt Alarich-Weiss-Strasse 2 D-64287 Darmstadt Germany
| | - Michael R. Buchmeiser
- Institute of Polymer Chemistry Universität Stuttgart Pfaffenwaldring 55 D-70569 Stuttgart Germany
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Seljak KB, Kocbek P, Gašperlin M. Mesoporous silica nanoparticles as delivery carriers: An overview of drug loading techniques. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101906] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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10
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Martin-Illana A, Cazorla-Luna R, Notario-Pérez F, Ruiz-Caro R, Bedoya LM, Veiga-Ochoa MD, Rubio J, Tamayo A. Amino Functionalized Micro-Mesoporous Hybrid Particles for the Sustained Release of the Antiretroviral Drug Tenofovir. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3494. [PMID: 32784712 PMCID: PMC7476006 DOI: 10.3390/ma13163494] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/03/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023]
Abstract
The sustained release of an antiretroviral agent to women mucosa has been proved as an excellent strategy to reduce the sexual transmission of HIV. Hybrid micro-mesoporous particles have been synthesized and functionalized with a silane coupling agent followed by loading the antiretroviral tenofovir. It has been observed that the disposition of the silane molecule on the surface of the particles determines the interaction mechanism with the antiretroviral molecule loaded independently on the surface area of the particles. In this sense, available and free amino groups are required to achieve a smart pH-responsive material, a condition that is only achieved in those materials containing a silane chemisorbed monolayer. Moreover, the modulation of the release kinetics attributed to the presence of the silane monolayer covering the mesopores has been confirmed by fitting the releasing curves to the first order and Weibull models. The developed micro-mesoporous particles have been demonstrated to be excellent smart-release vehicles for antiviral agents and can be safely used in polymer mucoadhesive vaginal gels.
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Affiliation(s)
- Araceli Martin-Illana
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain; (A.M.-I.); (R.C.-L.); (F.N.-P.); (R.R.-C.); (M.D.V.-O.)
| | - Raul Cazorla-Luna
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain; (A.M.-I.); (R.C.-L.); (F.N.-P.); (R.R.-C.); (M.D.V.-O.)
| | - Fernando Notario-Pérez
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain; (A.M.-I.); (R.C.-L.); (F.N.-P.); (R.R.-C.); (M.D.V.-O.)
| | - Roberto Ruiz-Caro
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain; (A.M.-I.); (R.C.-L.); (F.N.-P.); (R.R.-C.); (M.D.V.-O.)
| | - Luis Miguel Bedoya
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain;
| | - Maria Dolores Veiga-Ochoa
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Universidad Complutense de Madrid, Plaza Ramón y Cajal s.n, 28007 Madrid, Spain; (A.M.-I.); (R.C.-L.); (F.N.-P.); (R.R.-C.); (M.D.V.-O.)
| | - Juan Rubio
- Institute of Ceramics and Glass, CSIC, Kelsen 5, 28049 Madrid, Spain;
| | - Aitana Tamayo
- Institute of Ceramics and Glass, CSIC, Kelsen 5, 28049 Madrid, Spain;
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Giri K, Lau M, Kuschnerus I, Moroni I, Garcia-Bennett AE. A lysozyme corona complex for the controlled pharmacokinetic release of probucol from mesoporous silica particles. Biomater Sci 2020; 8:3800-3803. [PMID: 32555808 DOI: 10.1039/d0bm00445f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous silica particles (MSPs) enhance the release kinetics of poorly soluble compound probucol (PB) under the influence of a pore-blocking protein corona, prepared with lysozyme protein adsorption. In vivo oral administration experiments show a prolongation in the time to reach maximum systemic concentration and half-life of PB released from the lysozyme-MSP complex in comparison to the MSP alone. Specific hard protein corona complexes can act as functional diffusion barriers for the controlled release of drugs from MSP based formulations.
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Affiliation(s)
- Kalpeshkumar Giri
- Dpt. Molecular Sciences, Macquarie University, Sydney, NSW, Australia.
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12
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Joyce P, Ulmefors H, Garcia-Bennett A, Prestidge CA. Microporosity, Pore Size, and Diffusional Path Length Modulate Lipolysis Kinetics of Triglycerides Adsorbed onto SBA-15 Mesoporous Silica Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3367-3376. [PMID: 32167765 DOI: 10.1021/acs.langmuir.0c00253] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Understanding lipase-mediated hydrolysis mechanisms within solid-state nanocarriers is fundamental for the rational design of lipid-based formulations. In this study, SBA-15 ordered mesoporous silica (MPS) particles were engineered with well-controlled nanostructural properties to systematically elucidate the role of intrawall microporosity, mesopore size, and particle structure on lipase activity. The microporosity and diffusional path length were shown to be key modulators for lipase-provoked hydrolysis of medium chain triglycerides confined within MPS, with small changes in the pore size, between 9 and 13 nm, showing now a clear correlation to lipase activity. Lipid speciation within MPS after lipolysis, obtained through 1H NMR, indicated that free fatty acids preferentially adsorbed to rod-shaped MPS (RodMPS) particles with high microporosity. MPS that formed aggregated spindle-like structures (AggMPS) had intrinsically reduced microporosity, which was hypothesized to limit lipase/lipid diffusion to and from the MPS pores and thus retard lipolysis kinetics. A linear correlation between the microporosity and the extent of lipase-provoked hydrolysis was observed within both AggMPS and RodMPS, ultimately indicating that the intricate interplay between the microporosity and lipid/lipase diffusion can be harnessed to optimize lipolysis kinetics for silica-lipid hybrid carriers. The new insights derived in this study are integral to the future development of solid-state lipid-based nanocarriers that control the lipase activity for improving the absorption of poorly soluble bio-active compounds.
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Affiliation(s)
- Paul Joyce
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5000, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide 5000, Australia
| | - Hanna Ulmefors
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5000, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide 5000, Australia
| | | | - Clive A Prestidge
- School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, Adelaide, South Australia 5000, Australia
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, University of South Australia, Adelaide 5000, Australia
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Gámez E, Elizondo-Castillo H, Tascon J, García-Salinas S, Navascues N, Mendoza G, Arruebo M, Irusta S. Antibacterial Effect of Thymol Loaded SBA-15 Nanorods Incorporated in PCL Electrospun Fibers. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E616. [PMID: 32230766 PMCID: PMC7221837 DOI: 10.3390/nano10040616] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/19/2020] [Accepted: 03/24/2020] [Indexed: 12/21/2022]
Abstract
For the effective management of infected chronic wounds, the incorporation of antimicrobial drugs into wound dressings can increase their local availability at the infection site. Mesoporous silicon dioxide SBA-15 is an excellent drug carrier with tunable drug release kinetics. In this work, synthesized SBA-15 loaded with the natural antimicrobial compound thymol (THY) was incorporated into polycaprolactone (PCL) electrospun nanofibers to obtain an advanced wound dressing. Rod-shaped particles with internal parallel channels oriented along the longitudinal axis (diameter: 138 ± 30 nm, length: 563 ± 100 nm) were loaded with 70.8 wt.% of THY. Fiber mats were prepared using these particles as nanofillers within polycaprolactone (PCL) electrospun fibers. The resulting mats contained 5.6 wt.% of THY and more than half of this loading was released in the first 7 h. This release would prevent an initial bacterial colonization and also inhibit or eliminate bacterial growth as in vitro shown against Staphylococcus aureus ATCC 25923. Minimal inhibitory concentration (MIC: 0.07 mg/mL) and minimal bactericidal concentration (MBC: 0.11 mg/mL) of released THY were lower than the amount of free THY required, demonstrating the benefit of drug encapsulation for a more efficient bactericidal capacity due to the direct contact between mats and bacteria.
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Affiliation(s)
- Enrique Gámez
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
| | - Hellen Elizondo-Castillo
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
| | - Jorge Tascon
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
| | - Sara García-Salinas
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
| | - Nuria Navascues
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
| | - Gracia Mendoza
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
- Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Manuel Arruebo
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
- Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
| | - Silvia Irusta
- Department of Chemical Engineering. Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018 Zaragoza, Spain; (E.G.); (H.E.-C.); (J.T.); (S.G.-S.); (N.N.); (M.A.)
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN, 28029 Madrid, Spain;
- Aragon Health Research Institute (IIS Aragon), 50009 Zaragoza, Spain
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14
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Antioxidant properties of probucol released from mesoporous silica. Eur J Pharm Sci 2019; 138:105038. [PMID: 31398394 DOI: 10.1016/j.ejps.2019.105038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 07/15/2019] [Accepted: 08/05/2019] [Indexed: 11/21/2022]
Abstract
Antioxidants play a vital role in scavenging reactive oxygen species (ROS) produced by the reduction of molecular oxygen from various cellular mechanisms. Under oxidative stress, an increase in the levels of ROS overwhelms the antioxidant response, causing oxidative damage to biological molecules, and leading to the development of various diseases. Drug compounds with potent antioxidant properties are typically poorly water soluble and highly hydrophobic. An extreme case is Probucol (PB), a potent antioxidant with reported water solubility of 5 ng/ml, and oral bioavailiability of <10%. In this study, PB was loaded in mesoporous silica at various drug loadings to understand the changes to the physical properties of the loaded drug, and it's in vitro drug release. Further in vitro studies were conducted in endothelial and microglia cell models to compare the free radical scavening efficiency of ascorbic acid, PB, and PB release from mesoporous silica particles. Out of the three different mesostructured particles studied, the maximum loading of PB was achieved for large pore mesoporous particles (SBA-15) at 50 wt% drug loading, before complete pore filling was observed. For all materials, loadings above complete pore filling resulted in the recrystallization of PB on the external surface. In vitro drug release measurements showed a rapid dissolution rate at low drug loadings compared to a bimodal release profile of amorphous and crystalline drug at higher drug loadings. PB loaded in mesoporous particle was shown to enhance the antioxidant response to extracellular ROS in the endothelial cell line model, and to intracellular ROS in the microglia cell model. Our results indicate that the antioxidant properties of PB can be significantly improved by using mesoporous silica as a delivery vehicle.
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15
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Influence of a Protein Corona on the Oral Pharmacokinetics of Testosterone Released from Mesoporous Silica. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201900110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Garcia-Bennett AE, Lau M, Bedford N. Probing the Amorphous State of Pharmaceutical Compounds Within Mesoporous Material Using Pair Distribution Function Analysis. J Pharm Sci 2018; 107:2216-2224. [DOI: 10.1016/j.xphs.2018.03.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 02/28/2018] [Accepted: 03/16/2018] [Indexed: 11/16/2022]
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17
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Angiolini L, Valetti S, Cohen B, Feiler A, Douhal A. Fluorescence imaging of antibiotic clofazimine encapsulated within mesoporous silica particle carriers: relevance to drug delivery and the effect on its release kinetics. Phys Chem Chem Phys 2018; 20:11899-11911. [PMID: 29666860 DOI: 10.1039/c7cp08328a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report on the encapsulation of the antibiotic clofazimine (CLZ) within the pores of mesoporous silica particles having hydrophilic (CBET value of 137) and more hydrophobic (CBET value of 94 after calcination at 600 °C) surfaces. We studied the effect of pH on the released amount of CLZ in aqueous solutions and observed a maximum at pH 4.1 in correlation with the solubility of the drug. Less release of the drug was observed from the more hydrophobic particles which was attributed to a difference in the affinity of the drug to the carrier particles. Fluorescence lifetime imaging microscopy, emission spectra, and fluorescence lifetimes of single drug loaded particles provided detailed understanding and new knowledge of the physical form of the encapsulated drug and the distribution within the particles. The distribution of CLZ within the particles was independent of the surface chemistry of the particles. The confirmation of CLZ molecules as monomers or aggregates was revealed by controlled removal of the drug with solvent. Additionally, the observed optical "halo effect" in the fluorescent images was interpreted in terms of specific quenching of high concentration of molecules. The emission lifetime experiments suggest stronger interaction of CLZ with the more hydrophobic particles, which is relevant to its release. The results reported in this work demonstrate that tuning the hydrophilicity/hydrophobicity of mesoporous silica particles can be used as a tool to control the release without impacting their loading ability.
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Affiliation(s)
- Lorenzo Angiolini
- Departamento de Química Física, Facultad de Ciencias del Medio Ambiente y Bioquímica and INAMOL, Universidad de Castilla-La Mancha, Avenida Carlos III, S/N, 45071 Toledo, Spain.
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18
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Héroguel F, Silvioli L, Du YP, Luterbacher JS. Controlled deposition of titanium oxide overcoats by non-hydrolytic sol gel for improved catalyst selectivity and stability. J Catal 2018. [DOI: 10.1016/j.jcat.2017.11.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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19
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Maleki A, Kettiger H, Schoubben A, Rosenholm JM, Ambrogi V, Hamidi M. Mesoporous silica materials: From physico-chemical properties to enhanced dissolution of poorly water-soluble drugs. J Control Release 2017; 262:329-347. [PMID: 28778479 DOI: 10.1016/j.jconrel.2017.07.047] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 06/24/2017] [Accepted: 07/31/2017] [Indexed: 12/20/2022]
Abstract
New approaches in pharmaceutical chemistry have resulted in more complex drug molecules in the quest to achieve higher affinity to their targets. However, these 'highly active' drugs can also suffer from poor water solubility. Hence, poorly water soluble drugs became a major challenge in drug formulation, and this problem is increasing, as currently about 40 of the marketed drugs and 90% of drug candidates are classified as poorly water soluble. Various approaches exist to circumvent poor water solubility and poor dissolution rate in aqueous environment, however, each having disadvantages and certain limitations. Recently, mesoporous silica materials (MSMs) have been proposed to be used as matrices for enhancing the apparent solubility and dissolution rate of different drug molecules. MSMs are ideal candidates for this purpose, as silica is a "generally regarded as safe" (GRAS) material, is biodegradable, and can be readily surface-modified in order to optimize drug loading and subsequent release in the human body. The major advantage of mesoporous silica as drug delivery systems (DDSs) for poorly water soluble drugs lies in their pore size, pore morphology, and versatility in alteration of the surface groups, which can result in optimized interactions between a drug candidate and MSM carrier by modifying the pore surfaces. Furthermore, the drug of interest can be loaded into these pores in a preferably amorphous state, which can increase the drug dissolution properties dramatically. The highlights of this review include a critical discussion about the modification of the physico-chemical properties of MSMs and how these physico-chemical modifications influence the drug loading and the subsequent dissolution of poorly water soluble drugs. It aims to further promote the use of MSMs as alternative strategy to common methods like solubility enhancement by cyclodextrins, micronization, or microemulsion techniques. This review can provide guidance on how to tailor MSMs to achieve optimized drug loading and drug dissolution.
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Affiliation(s)
- Aziz Maleki
- Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran
| | - Helene Kettiger
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland
| | - Aurélie Schoubben
- Department of Pharmaceutical Sciences, University of Perugia, 06123 Perugia, Italy
| | - Jessica M Rosenholm
- Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland.
| | - Valeria Ambrogi
- Department of Pharmaceutical Sciences, University of Perugia, 06123 Perugia, Italy.
| | - Mehrdad Hamidi
- Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran.
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20
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Valetti S, Wankar J, Ericson MB, Feiler A, Manet I. Mesoporous silica particles as a lipophilic drug vehicle investigated by fluorescence lifetime imaging. J Mater Chem B 2017; 5:3201-3211. [PMID: 32263718 DOI: 10.1039/c7tb00198c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Three types of new label-free fluorescent mesoporous silica micro- and nanoparticles were prepared by controlled thermal decomposition of carboamino groups linked on the surface without compromising the drug loading capacity of the silica particles. Clofazimine, a lipophilic antibiotic drug with excellent in vitro activity against mycobacterium tuberculosis, was encapsulated inside these fluorescent particles to obtain multifunctional drug carriers of interest in the field of theranostics. The morphological features together with the photophysical properties of both powders and aqueous suspensions are described. The photophysical properties seem to be independent of the mesoporosity features but correlate with the residual carboamino functionalization. The particles are endowed with emission in the visible region and have fluorescence lifetimes of up to 9.0 ns that can be easily discriminated from intrinsic biological fluorescence. Furthermore, their fluorescence lifetime offers a promising tool to follow the release of the encapsulated drug which is not possible by means of simple fluorescence intensity. We report here a novel attractive theranostic platform enabling monitoring of drug release in biological environments by means of fluorescence lifetime.
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21
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Valetti S, Xia X, Costa-Gouveia J, Brodin P, Bernet-Camard MF, Andersson M, Feiler A. Clofazimine encapsulation in nanoporous silica particles for the oral treatment of antibiotic-resistant Mycobacterium tuberculosis infections. Nanomedicine (Lond) 2017; 12:831-844. [DOI: 10.2217/nnm-2016-0364] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Aim: First extensive reformulation of clofazimine (CLZ) in nanoporous silica particles (NSPs) for tackling antibiotic-resistant tuberculosis (TB) infections. Materials & methods: Solid-state characterization of several CLZ-encapsulated NSP formulations was followed by in vitro drug solubility, Caco-2 intestinal cells drug permeability and TB antibacterial activity. Results: NSPs stabilize the amorphous state of CLZ (shelf stability >6 months) and dramatically increase the drug solubility in simulated gastric fluid (up to 20-fold) with different dissolution kinetics depending on the NSPs used. CLZ encapsulation in NSP substantially enhances the permeation through model intestinal cell layer, achieving effective antimicrobial concentrations in TB-infected macrophages. Conclusion: Promising results toward refurbishment of an approved marketed drug for a different indication suitable for oral anti-TB formulation.
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Affiliation(s)
- Sabrina Valetti
- Nanologica AB, SE-151 36 Södertälje, Sweden
- Biofilms - Research Center for Biointerfaces, Department of Biomedical Sciences, Faculty of Health & Sciences, Malmö University, Sweden
| | - Xin Xia
- Nanologica AB, SE-151 36 Södertälje, Sweden
| | - Joana Costa-Gouveia
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur deLille, U1019 – UMR 8204 – CIIL – Center for Infection & Immunity of Lille, F-59000 Lille, France
| | - Priscille Brodin
- Univ. Lille, CNRS, INSERM, CHU Lille, Institut Pasteur deLille, U1019 – UMR 8204 – CIIL – Center for Infection & Immunity of Lille, F-59000 Lille, France
| | - Marie-Françoise Bernet-Camard
- EA4043 Unité BactériesPathogènes et Santé (UBaPS), Univ. Paris-Sud, Université Paris-Saclay, 92296, Châtenay-Malabry Cedex, France
| | | | - Adam Feiler
- Nanologica AB, SE-151 36 Södertälje, Sweden
- Surface and Corrosion Science, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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22
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Nairi V, Medda L, Monduzzi M, Salis A. Adsorption and release of ampicillin antibiotic from ordered mesoporous silica. J Colloid Interface Sci 2017; 497:217-225. [PMID: 28285049 DOI: 10.1016/j.jcis.2017.03.021] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/27/2017] [Accepted: 03/03/2017] [Indexed: 10/20/2022]
Abstract
In this work the adsorption and the release of ampicillin - a β-lactam penicillin-like antibiotic - from MCM-41, SBA-15, and (amino functionalized) SBA-15-NH2 ordered mesoporous silica (OMS) materials were investigated. The silica matrices differ for their pore size (SBA-15 vs. MCM-41) mainly, and also for surface charge (SBA-15 and MCM-41, vs. SBA-15-NH2). OMS samples were characterized through small-angle X-rays scattering (SAXS), transmission electron microscopy (TEM), N2 adsorption-desorption isotherms, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and potentiometric titrations. The quantification of immobilized and released ampicillin was monitored by mean of UV-Vis spectroscopy. Experimental adsorption isotherms evidenced that ampicillin's loading is not related to the pore size (dBJH) of the adsorbent. Indeed the maximal loadings were 237mg/g for SBA-15 (dBJH=6.5nm), 278mg/g for MCM-41 (dBJH=2.2nm), and 333mg/g for SBA-15-NH2 (dBJH=5.6nm). Loading seems, instead, to be related to the surface charge density (σ) of the sorbent surface. Indeed, at pH 7.4 ampicillin drug is negatively charged and likely prefers to interact with SBA-15-NH2 (σSBA-15-NH2=+0.223Cm-2) rather than the slightly negatively charged silicas (σSBA-15=-0.044Cm-2 and σMCM-41=-0.033Cm-2). Similarly, ampicillin release is affected by interfacial interactions. Indeed, we found a burst release from pure silica samples (SBA-15 and MCM-41), whereas a sustained one from SBA-15-NH2 sample. We explain this behavior as a result of an attractive interaction between the protonated amino group of SBA-15-NH2 and the negatively charged carboxylate group of ampicillin. In summary, in order to obtain a sustained drug release, the chemical nature of the matrix's surface plays a role which is more important than its textural features. SBA-15-NH2 matrix is hence a suitable candidate for local sustained release of antibiotic drugs.
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Affiliation(s)
- Valentina Nairi
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Luca Medda
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy
| | - Maura Monduzzi
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy.
| | - Andrea Salis
- Department of Chemical and Geological Sciences, University of Cagliari-CSGI and CNBS, Cittadella Universitaria, S.S. 554 bivio Sestu, 09042 Monserrato, CA, Italy.
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23
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Development of a Prolonged-Release Drug Delivery System with Magnolol Loaded in Amino-Functionalized Mesoporous Silica. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7030237] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Mohammadzadeh M, Nourbakhsh MS, Khodaverdi E, Hadizadeh F, Omid Malayeri S. Enhanced Loading and Release of Non-Steroidal Anti-Inflammatory Drugs from Silica-Based Nanoparticle Carriers. Chem Biol Drug Des 2016; 88:370-9. [DOI: 10.1111/cbdd.12764] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/22/2016] [Accepted: 03/28/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Mostafa Mohammadzadeh
- Department of Biotechnology; Faculty of New Sciences and Technologies; Semnan University; Semnan 35131-1911 Iran
| | - Mohammad Sadegh Nourbakhsh
- Department of Biotechnology; Faculty of New Sciences and Technologies; Semnan University; Semnan 35131-1911 Iran
| | - Elham Khodaverdi
- Targeted Drug Delivery Research Center; School of Pharmacy; Mashhad University of Medical Sciences; Mashhad 1365-91775 Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center; School of Pharmacy; Mashhad University of Medical Sciences; Mashhad 1365-91775 Iran
| | - Sina Omid Malayeri
- Student Research Committee; School of Pharmacy; Mashhad University of Medical Sciences; Mashhad 1365-91775 Iran
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25
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Abstract
In this review, preparation, characterization and application of various types of SBA-15 as drug delivery agents is investigated.
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Affiliation(s)
| | - Ghodsi Mohammadi Ziarani
- Department of Chemistry
- Alzahra University
- Tehran
- Iran
- National Laboratory of Pharmaceutical Research
| | - Alireza Badiei
- School of Chemistry
- College of Science
- University of Tehran
- Tehran
- Iran
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