1
|
Gupta A, Paudwal G, Dolkar R, Lewis S, Gupta PN. Recent advances in the surfactant and controlled release polymer-based solid dispersion. Curr Pharm Des 2022; 28:1643-1659. [PMID: 35209818 DOI: 10.2174/1381612828666220223095417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/24/2021] [Indexed: 11/22/2022]
Abstract
The oral route is the most preferred delivery route for drug administration due to its advantages such as lower cost, improved patient compliance, no need for trained personnel and the drug reactions are generally less severe. The major problem with new molecules in the drug discovery pipeline is poor solubility and dissolution rate that ultimately results in low oral bioavailability. Numerous techniques are available for solubility and bioavailability (BA) enhancement, but out of all, solid dispersion (SD) is proven to be the most feasible due to the least issues in manufacturing, processing, storage, and transportation. In the past few years, SD had been extensively applied to reinforce the common issues of insoluble drugs. Currently, many hydrophobic and hydrophilic polymers are used to prepare either immediate release or controlled release SDs. Therefore, the biological behavior of the SDs is contingent upon the use of appropriate polymeric carriers and methods of preparation. The exploration of novel carriers and methodologies in SD technology leads to improved BA and therapeutic effectiveness. Moreover, the clinical applicability of SD-based formulations has been increased with the discovery of novel polymeric carriers. In this review, emphasis is laid down on the present status of recent generations of SDs (i.e., surfactant and controlled release polymer-based SD) and their application in modifying the physical properties of the drug and modulation of pharmacological response in different ailments.
Collapse
Affiliation(s)
- Aman Gupta
- PK-PD Tox & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu-180002, India
- Manipal College of Pharmaceutical Sciences, MAHE, Manipal-576104, India
| | - Gourav Paudwal
- PK-PD Tox & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu-180002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Rigzin Dolkar
- PK-PD Tox & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu-180002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Shaila Lewis
- Manipal College of Pharmaceutical Sciences, MAHE, Manipal-576104, India
| | - Prem N Gupta
- PK-PD Tox & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu-180002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| |
Collapse
|
2
|
Alshehri S, Imam SS, Hussain A, Altamimi MA, Alruwaili NK, Alotaibi F, Alanazi A, Shakeel F. Potential of solid dispersions to enhance solubility, bioavailability, and therapeutic efficacy of poorly water-soluble drugs: newer formulation techniques, current marketed scenario and patents. Drug Deliv 2020; 27:1625-1643. [PMID: 33207947 PMCID: PMC7737680 DOI: 10.1080/10717544.2020.1846638] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 12/29/2022] Open
Abstract
In the last few decades, solid dispersion (SD) technology had been studied as an approach to produce an amorphous carrier to enhance the solubility, dissolution rate, and bioavailability of poorly water-soluble drugs. The use of suitable carrier and methodology in the preparation of SDs play a significant role in the biological behavior of the SDs. SDs have been prepared using a variety of pharmaceutically acceptable polymers utilizing various novel technologies. In the recent years, much attention has been paid toward the use of novel carriers and methodologies in exploring novel types of SDs to enhance therapeutic efficacy and bioavailability. The use of novel carriers and methodologies would be very beneficial for formulation scientists to develop some SDs-based formulations for their commercial use and clinical applications. In the present review, current literature of novel methodologies for SD preparation to enhance the dissolution rate, solubility, therapeutic efficacy, and bioavailability of poorly water-soluble drugs has been summarized and analyzed. Further, the current status of SDs, patent status, and future prospects have also been discussed.
Collapse
Affiliation(s)
- Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
- College of Pharmacy, Almaarefa University, Riyadh, Saudi Arabia
| | - Syed Sarim Imam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Afzal Hussain
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad A. Altamimi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Nabil K. Alruwaili
- Department of Pharmaceutics, College of Pharmacy, Jouf University, Sakaka, Saudi Arabia
| | - Fahad Alotaibi
- General Directorate Health Affairs, Ministry of Health, Riyadh, Saudi Arabia
| | - Abdullah Alanazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| |
Collapse
|
3
|
De Mohac LM, Raimi-Abraham B, Caruana R, Gaetano G, Licciardi M. Multicomponent solid dispersion a new generation of solid dispersion produced by spray-drying. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101750] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
4
|
Paudwal G, Rawat N, Gupta R, Baldi A, Singh G, Gupta PN. Recent Advances in Solid Dispersion Technology for Efficient Delivery of Poorly Water-Soluble Drugs. Curr Pharm Des 2019; 25:1524-1535. [DOI: 10.2174/1381612825666190618121553] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/11/2019] [Indexed: 11/22/2022]
Abstract
Drug discovery is generally considered as a costly affair and it takes approximately 15 years to reach a
new chemical entity into the market. Among the recent potent drug molecules with most effective pharmacological
properties, very few reached for Phase I clinical trial in humans. Unfortunately, the historical average reveals
an almost 90% overall attrition rate in clinical trials. The solubility and permeability of a drug are the critical
factors influencing the success of a drug. Oral drug delivery systems still continue to exist as the most favored,
simplest and easiest administration route. A huge number of potential clinical candidates won’t make it to the
market or accomplish their maximum capacity except if their solubility and oral bioavailability are enhanced by
formulation. The solubility of drugs will continue to exist as important aspects of formulation development. With
the emergence of synthetic methods for new molecule synthesis in chemistry and better screening methods, the
number of poorly water soluble compounds has dramatically expanded in the last few years. Solid dispersion is
one of the most important techniques as it can be prepared by several methods. It is mostly prepared with a drug
having poor water solubility and it explores hydrophilic polymers either individually or in combination for the
enhancement of solubility. In comparison to the conventional formulations such as tablets or capsules, there are
different methods with which solid dispersions can be prepared and also have many benefits over conventional
drug delivery approaches. Solid dispersion systems are potential for increasing the solubility, oral absorption and
bioavailability of drugs and the significance of the solid dispersion technology is constantly increasing. The main
focus of this review is to present recent advancements in the area of solid dispersion. This review also includes an
account of recent patents on solid dispersion and clinical status of solid dispersion based formulations.
Collapse
Affiliation(s)
- Gourav Paudwal
- PK-PD Toxicology & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Neha Rawat
- Department of Pharmacy, Maharaja Ranjit Singh Punjab Technical University, Bathinda, India
| | - Rahul Gupta
- PK-PD Toxicology & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Ashish Baldi
- Department of Pharmacy, Maharaja Ranjit Singh Punjab Technical University, Bathinda, India
| | - Gurdarshan Singh
- PK-PD Toxicology & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Prem N. Gupta
- PK-PD Toxicology & Formulation Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| |
Collapse
|
5
|
Modica de Mohac L, Keating AV, de Fátima Pina M, Raimi-Abraham BT. Engineering of Nanofibrous Amorphous and Crystalline Solid Dispersions for Oral Drug Delivery. Pharmaceutics 2018; 11:E7. [PMID: 30586871 PMCID: PMC6359107 DOI: 10.3390/pharmaceutics11010007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 10/12/2018] [Accepted: 10/19/2018] [Indexed: 02/07/2023] Open
Abstract
Poor aqueous solubility (<0.1 mg/mL) affects a significant number of drugs currently on the market or under development. Several formulation strategies including salt formation, particle size reduction, and solid dispersion approaches have been employed with varied success. In this review, we focus primarily on the emerging trends in the generation of amorphous and micro/nano-crystalline solid dispersions using electrospinning to improve the dissolution rate and in turn the bioavailability of poorly water-soluble drugs. Electrospinning is a simple but versatile process that utilizes electrostatic forces to generate polymeric fibers and has been used for over 100 years to generate synthetic fibers. We discuss the various electrospinning studies and spinneret types that have been used to generate amorphous and crystalline solid dispersions.
Collapse
Affiliation(s)
- Laura Modica de Mohac
- DIBIMIS Department, University of Study of Palermo, 90128 Palermo, Italy.
- Drug Delivery Group, Institute of Pharmaceutical Science Faculty of Life Sciences and Medicine, King's College London, London SE1 9NH, UK.
| | - Alison Veronica Keating
- Drug Delivery Group, Institute of Pharmaceutical Science Faculty of Life Sciences and Medicine, King's College London, London SE1 9NH, UK.
| | - Maria de Fátima Pina
- Department of Pharmaceutics, University College London School of Pharmacy, London WC1N 1AX, UK.
| | - Bahijja Tolulope Raimi-Abraham
- Drug Delivery Group, Institute of Pharmaceutical Science Faculty of Life Sciences and Medicine, King's College London, London SE1 9NH, UK.
| |
Collapse
|
6
|
Early stages of drug crystallization from amorphous solid dispersion via fractal analysis based on chemical imaging. Eur J Pharm Biopharm 2018; 133:122-130. [PMID: 30300718 DOI: 10.1016/j.ejpb.2018.10.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/03/2018] [Accepted: 10/05/2018] [Indexed: 12/30/2022]
Abstract
Early stages of crystallization from amorphous solid dispersion (ASD) are typically not detected by means of standard methods like powder X-ray diffraction (XRPD). The aim of this study is therefore to evaluate if fractal analysis based on energy dispersive X-ray imaging can provide the means to identify early signs of physical instability. ASDs of the poorly water-soluble compound, felodipine (FEL) were prepared by solvent evaporation using different grades of HPMCAS, at 50 wt% drug loading. Samples were stored at accelerated conditions of 40 °C. Scanning electron microscopy equipped with an energy-dispersive X-ray spectroscopy (SEM-EDS) was used for elemental mapping of tablet surfaces. Comparative data were generated with a standard XRPD and with more sensitive methods for detection of early instability, i.e. laser scanning confocal microscopy (LSM) and atomic force microscopy (AFM). The SEM-EDS identified changes of drug-rich domains that were confirmed by LSM and AFM. Early changes in drug clusters were also revealed by a multifractal analysis that indicated a beginning phase separation and drug crystallization. Therefore, the presented fractal cluster analysis based on chemical imaging bears much promise as a new method to detect early signs of physical instability in ASD, which is of great relevance for pharmaceutical development.
Collapse
|
7
|
Aleandri S, Jankovic S, Kuentz M. Towards a better understanding of solid dispersions in aqueous environment by a fluorescence quenching approach. Int J Pharm 2018; 550:130-139. [PMID: 30130607 DOI: 10.1016/j.ijpharm.2018.08.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 11/28/2022]
Abstract
Solid dispersions (SDs) represent an important formulation technique to achieve supersaturation in gastro-intestinal fluids and to enhance absorption of poorly water-soluble drugs. Extensive research was leading to a rather good understanding of SDs in the dry state, whereas the complex interactions in aqueous medium are still challenging to analyze. This paper introduces a fluorescence quenching approach together with size-exclusion chromatography to study drug and polymer interactions that emerge from SDs release testing in aqueous colloidal phase. Celecoxib was used as a model drug as it is poorly water-soluble and also exhibits native fluorescence so that quenching experiments were enabled. Different pharmaceutical polymers were evaluated by the (modified) Stern-Volmer model, which was complemented by further bulk analytics. Drug accessibility by the quencher and its affinity to celecoxib were studied in physical mixtures as well as with in SDs. The obtained differences enabled important molecular insights into the different formulations. Knowledge of relevant drug-polymer interactions and the amount of drug embedded into polymer aggregates in the aqueous phase is of high relevance for understanding of SD performance. The novel fluorescence quenching approach is highly promising for future research and it can provide guidance in early formulation development of native fluorescent compounds.
Collapse
Affiliation(s)
- Simone Aleandri
- University of Applied Sciences and Arts Northwestern Switzerland, Institute of Pharma Technology, Hofackerstr. 30, Muttenz, Switzerland
| | - Sandra Jankovic
- University of Applied Sciences and Arts Northwestern Switzerland, Institute of Pharma Technology, Hofackerstr. 30, Muttenz, Switzerland; University of Basel, Department of Pharmaceutical Sciences, Basel, Switzerland
| | - Martin Kuentz
- University of Applied Sciences and Arts Northwestern Switzerland, Institute of Pharma Technology, Hofackerstr. 30, Muttenz, Switzerland.
| |
Collapse
|
8
|
Electron microscopy/energy dispersive X-ray spectroscopy of drug distribution in solid dispersions and interpretation by multifractal geometry. J Pharm Biomed Anal 2017; 150:241-247. [PMID: 29253780 DOI: 10.1016/j.jpba.2017.12.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 12/08/2017] [Accepted: 12/09/2017] [Indexed: 11/20/2022]
Abstract
Much contemporary research of poorly water-soluble drugs focuses on amorphous solid dispersions (SDs) for oral drug delivery. Recently, a multifractal formalism has been introduced to describe the distribution of an inorganic carrier in SDs. The present work attempts to directly image model drugs by means of scanning electron microscopy and energy dispersive X-ray spectroscopy. The compounds amlodipine, felodipine, glyburide, and indomethacine, which include halogens to enable sufficient scattering in energy dispersive X-ray spectroscopy, were employed to prepare SDs with hydroxypropyl methylcellulose acetate succinate (HPMCAS) by using a microwave method. Following chemical imaging, it was demonstrated that drug distribution was best described by multifractals, which was clearly superior to a monofractal assumption. The obtained fractal dimensions were influenced by drug loading and it was possible to detect microstructural changes upon addition of the plasticizer urea. Accordingly, the multifractal approach bears much potential to better explore the analytical results of chemical formulation imaging. Insights can be gained from the microstructural organization of SDs, which is interesting to further study formulation and process factors as well as physical stability.
Collapse
|
9
|
Vasconcelos T, Marques S, das Neves J, Sarmento B. Amorphous solid dispersions: Rational selection of a manufacturing process. Adv Drug Deliv Rev 2016; 100:85-101. [PMID: 26826438 DOI: 10.1016/j.addr.2016.01.012] [Citation(s) in RCA: 236] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/21/2015] [Accepted: 01/19/2016] [Indexed: 11/19/2022]
Abstract
Amorphous products and particularly amorphous solid dispersions are currently one of the most exciting areas in the pharmaceutical field. This approach presents huge potential and advantageous features concerning the overall improvement of drug bioavailability. Currently, different manufacturing processes are being developed to produce amorphous solid dispersions with suitable robustness and reproducibility, ranging from solvent evaporation to melting processes. In the present paper, laboratorial and industrial scale processes were reviewed, and guidelines for a rationale selection of manufacturing processes were proposed. This would ensure an adequate development (laboratorial scale) and production according to the good manufacturing practices (GMP) (industrial scale) of amorphous solid dispersions, with further implications on the process validations and drug development pipeline.
Collapse
Affiliation(s)
- Teófilo Vasconcelos
- BIAL-Portela & Cª, S.A., Avenida da Siderugia Nacional, 4745-457 Trofa, Portugal; Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Rua de Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal; I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
| | - Sara Marques
- CIBIO/InBIO-UP-Research Centre in Biodiversity and Genetic Resources, University of Porto, Rua Padre Armando Quintas, n° 7, 4485-661 Vairão, Portugal
| | - José das Neves
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal
| | - Bruno Sarmento
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Rua do Campo Alegre, 823, 4150-180 Porto, Portugal; Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde and Instituto Universitário de Ciências da Saúde, CESPU, Rua Central de Gandra 1317, 4585-116 Gandra, Portugal.
| |
Collapse
|
10
|
Meng F, Gala U, Chauhan H. Classification of solid dispersions: correlation to (i) stability and solubility (ii) preparation and characterization techniques. Drug Dev Ind Pharm 2015; 41:1401-15. [DOI: 10.3109/03639045.2015.1018274] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
11
|
Nguyen TNG, Tran PHL, Tran TV, Vo TV, Truong-DinhTran T. Development of a modified – solid dispersion in an uncommon approach of melting method facilitating properties of a swellable polymer to enhance drug dissolution. Int J Pharm 2015; 484:228-34. [DOI: 10.1016/j.ijpharm.2015.02.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/20/2015] [Accepted: 02/27/2015] [Indexed: 12/18/2022]
|
12
|
Vo CLN, Park C, Lee BJ. Current trends and future perspectives of solid dispersions containing poorly water-soluble drugs. Eur J Pharm Biopharm 2013; 85:799-813. [DOI: 10.1016/j.ejpb.2013.09.007] [Citation(s) in RCA: 422] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 07/29/2013] [Accepted: 09/09/2013] [Indexed: 11/24/2022]
|
13
|
Hyvönen Z, Hämäläinen V, Ruponen M, Lucas B, Rejman J, Vercauteren D, Demeester J, De Smedt S, Braeckmans K. Elucidating the pre- and post-nuclear intracellular processing of 1,4-dihydropyridine based gene delivery carriers. J Control Release 2012; 162:167-75. [DOI: 10.1016/j.jconrel.2012.06.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 06/01/2012] [Accepted: 06/09/2012] [Indexed: 01/20/2023]
|
14
|
Pansare V, Hejazi S, Faenza W, Prud'homme RK. Review of Long-Wavelength Optical and NIR Imaging Materials: Contrast Agents, Fluorophores and Multifunctional Nano Carriers. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2012; 24:812-827. [PMID: 22919122 PMCID: PMC3423226 DOI: 10.1021/cm2028367] [Citation(s) in RCA: 440] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The importance of long wavelength and near infra-red (NIR) imaging has dramatically increased due to the desire to perform whole animal and deep tissue imaging. The adoption of NIR imaging is also growing rapidly due to the availability of targeted biological agents for diagnosis and basic medical research that can be imaged in vivo. The wavelength range of 650-1450 nm falls in the region of the spectrum with the lowest absorption in tissue and therefore enables the deepest tissue penetration. This is the wavelength range we focus on with this review. To operate effectively the imaging agents must both be excited and must emit in this long-wavelength window. We review the agents used both for imaging by absorption, scattering, and excitation (such as fluorescence). Imaging agents comprise both aqueous soluble and insoluble species, both organic and inorganic, and unimolecular and supramolecular constructs. The interest in multi-modal imaging, which involves delivery of actives, targeting, and imaging, requires nanocarriers or supramolecular assemblies. Nanoparticles for diagnostics also have advantages in increasing circulation time and increased imaging brightness relative to single molecule imaging agents. This has led to rapid advances in nanocarriers for long-wavelength, NIR imaging.
Collapse
Affiliation(s)
- Vikram Pansare
- Princeton University, Dept. of Chemical and Biological Engineering, Princeton, NJ 08544
| | | | | | | |
Collapse
|
15
|
Kim KT, Lee JY, Lee MY, Song CK, Choi JH, Kim DD. Solid Dispersions as a Drug Delivery System. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2011. [DOI: 10.4333/kps.2011.41.3.125] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
16
|
Fouad EA, El-Badry M, Neau SH, Alanazi FK, Alsarra IA. Technology evaluation: Kollicoat IR. Expert Opin Drug Deliv 2011; 8:693-703. [DOI: 10.1517/17425247.2011.566266] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
17
|
Braeckmans K, Buyens K, Naeye B, Vercauteren D, Deschout H, Raemdonck K, Remaut K, Sanders NN, Demeester J, De Smedt SC. Advanced fluorescence microscopy methods illuminate the transfection pathway of nucleic acid nanoparticles. J Control Release 2010; 148:69-74. [PMID: 20833214 DOI: 10.1016/j.jconrel.2010.08.029] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2010] [Revised: 08/19/2010] [Accepted: 08/19/2010] [Indexed: 01/12/2023]
Abstract
A great deal of attention in biopharmacy and pharmaceutical technology is going to the development of nanoscopic particles to efficiently deliver nucleic acids to target cells. Despite the great potential of nucleic acids for treatment of various diseases, progress in the field is fairly slow. One of the causes is that development of suitable nanoscopic delivery vehicles is hampered by insufficient knowledge of their physicochemical and biophysical properties during the various phases of the transfection process. To address this issue, in the past decade we have developed and applied advanced fluorescence microscopy techniques that can provide a better insight in the transport and stability of nanoparticles in various biological media. This mini-review discusses the basic principles of fluorescence recovery after photobleaching (FRAP), fluorescence correlation spectroscopy (FCS) and single particle tracking (SPT), and gives an overview of studies in which we have employed these techniques to characterize the transport and stability of nucleic acid containing nanoparticles in extracellular media and in living cells.
Collapse
Affiliation(s)
- Kevin Braeckmans
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Kevin Buyens
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Broes Naeye
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Dries Vercauteren
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Hendrik Deschout
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Koen Raemdonck
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Katrien Remaut
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Niek N Sanders
- Laboratory of Gene Therapy, Ghent University, Heidestraat 19, 9820 Merelbeke, Belgium
| | - Jo Demeester
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Harelbekestraat 72, 9000 Gent, Belgium.
| |
Collapse
|
18
|
Acikgoz S, Aktas G, Inci MN, Altin H, Sanyal A. FRET between BODIPY Azide Dye Clusters within PEG-Based Hydrogel: A Handle to Measure Stimuli Responsiveness. J Phys Chem B 2010; 114:10954-60. [DOI: 10.1021/jp101663b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
19
|
Frigoli M, Ouadahi K, Larpent C. A Cascade FRET-Mediated Ratiometric Sensor for Cu2+Ions Based on Dual Fluorescent Ligand-Coated Polymer Nanoparticles. Chemistry 2009; 15:8319-30. [DOI: 10.1002/chem.200900475] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
20
|
Vasconcelos T, Sarmento B, Costa P. Solid dispersions as strategy to improve oral bioavailability of poor water soluble drugs. Drug Discov Today 2007; 12:1068-75. [PMID: 18061887 DOI: 10.1016/j.drudis.2007.09.005] [Citation(s) in RCA: 1011] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Revised: 09/05/2007] [Accepted: 09/14/2007] [Indexed: 11/24/2022]
Abstract
Solid dispersions are one of the most promising strategies to improve the oral bioavailability of poorly water soluble drugs. By reducing drug particle size to the absolute minimum, and hence improving drug wettability, bioavailability may be significantly improved. They are usually presented as amorphous products, mainly obtained by two major different methods, for example, melting and solvent evaporation. Recently, surfactants have been included to stabilize the formulations, thus avoiding drug recrystallization and potentiating their solubility. New manufacturing processes to obtain solid dispersions have also been developed to reduce the drawbacks of the initial process. In this review, it is intended to discuss the recent advances related on the area of solid dispersions.
Collapse
Affiliation(s)
- Teófilo Vasconcelos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, Rua Aníbal Cunha 164, 4050-047 Porto, Portugal.
| | | | | |
Collapse
|