1
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A Comparative Study between A Protein Based Amorphous Formulation and Other Dissolution Rate Enhancing Approaches: A Case Study with Rifaximin. Pharmaceutics 2022; 15:pharmaceutics15010126. [PMID: 36678757 PMCID: PMC9865404 DOI: 10.3390/pharmaceutics15010126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/17/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022] Open
Abstract
Amorphous solid dispersions (ASDs) based on proteins as co-formers have previously shown promising potential to improve the solubility and bioavailability of poorly water-soluble drugs. In particular, whey proteins have shown to be promising co-formers and amorphous stabilizers in ASD formulations, including at high drug loading. In this study, the feasibility of the whey protein β-lactoglobulin (BLG) as a co-former in ASDs was compared to the more traditional ASD co-formers based on synthetic polymers (hydroxypropyl methylcellulose acetate succinate and Eudragit® L) as well as to a nanocrystalline formulation. The poorly water-soluble drug rifaximin (RFX) was chosen as the model drug. All drug/co-former formulations were prepared as fully amorphous ASDs by spray drying at 50% (w/w) drug loading. The BLG-based ASD had the highest glass transition temperature and showed a faster dissolution rate and higher drug solubility in three release media with different pH values (1.2, 4.5, and 6.5) compared to the polymer-based ASDs and the nanocrystalline RFX. In conclusion, BLG is a promising co-former and amorphous stabilizer of RFX in ASD formulations, superior to the selected polymer-based ASD systems or the nanocrystalline formulation.
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Lu L, Xu Q, Wang J, Wu S, Luo Z, Lu W. Drug Nanocrystals for Active Tumor-Targeted Drug Delivery. Pharmaceutics 2022; 14:pharmaceutics14040797. [PMID: 35456631 PMCID: PMC9026472 DOI: 10.3390/pharmaceutics14040797] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/19/2022] [Accepted: 03/25/2022] [Indexed: 12/17/2022] Open
Abstract
Drug nanocrystals, which are comprised of active pharmaceutical ingredients and only a small amount of essential stabilizers, have the ability to improve the solubility, dissolution and bioavailability of poorly water-soluble drugs; in turn, drug nanocrystal technology can be utilized to develop novel formulations of chemotherapeutic drugs. Compared with passive targeting strategy, active tumor-targeted drug delivery, typically enabled by specific targeting ligands or molecules modified onto the surface of nanomedicines, circumvents the weak and heterogeneous enhanced permeability and retention (EPR) effect in human tumors and overcomes the disadvantages of nonspecific drug distribution, high administration dosage and undesired side effects, thereby contributing to improving the efficacy and safety of conventional nanomedicines for chemotherapy. Continuous efforts have been made in the development of active tumor-targeted drug nanocrystals delivery systems in recent years, most of which are encouraging and also enlightening for further investigation and clinical translation.
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Affiliation(s)
- Linwei Lu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai 200040, China;
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Qianzhu Xu
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Jun Wang
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Sunyi Wu
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Zimiao Luo
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
| | - Weiyue Lu
- Department of Pharmaceutics, School of Pharmacy, Fudan University & Key Laboratory of Smart Drug Delivery (Fudan University), Ministry of Education, Shanghai 201203, China; (Q.X.); (J.W.); (S.W.); (Z.L.)
- Institutes of Integrative Medicine, Fudan University, Shanghai 200040, China
- Shanghai Engineering Technology Research Center for Pharmaceutical Intelligent Equipment, and Shanghai Frontiers Science Center for Druggability of Cardiovascular Non-Coding RNA, Institute for Frontier Medical Technology, Shanghai University of Engineering Science, Shanghai 201620, China
- Correspondence:
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3
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Brown B, Ward A, Fazili Z, Østergaard J, Asare-Addo K. Application of UV dissolution imaging to pharmaceutical systems. Adv Drug Deliv Rev 2021; 177:113949. [PMID: 34461199 DOI: 10.1016/j.addr.2021.113949] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 08/11/2021] [Accepted: 08/23/2021] [Indexed: 12/19/2022]
Abstract
UV-vis spectrometry is widely used in the pharmaceutical sciences for compound quantification, alone or in conjunction with separation techniques, due to most drug entities possessing a chromophore absorbing light in the range 190-800 nm. UV dissolution imaging, the scope of this review, generates spatially and temporally resolved absorbance maps by exploiting the UV absorbance of the analyte. This review aims to give an introduction to UV dissolution imaging and its use in the determination of intrinsic dissolution rates and drug release from whole dosage forms. Applications of UV imaging to non-oral formulations have started to emerge and are reviewed together with the possibility of utilizing UV imaging for physical chemical characterisation of drug substances. The benefits of imaging drug diffusion and transport processes are also discussed.
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Maurya P, Pandey P, Singh S, Sonkar A, Singh S, Saraf S. Appraisal of Felodipine nanocrystals for solubility enhancement and pharmacodynamic parameters on cadmium chloride induced hypertension in rats. Curr Drug Deliv 2021; 19:625-634. [PMID: 34325637 DOI: 10.2174/1567201818666210729104351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND OBJECTIVE Felodipine (FDP), an antihypertensive drug possesses low water solubility and extensive first-pass metabolism leading to poor bioavailability. This impelled us to improve its solubility, bioavailability, and pharmacodynamic properties through the nanocrystal (NC) approach. METHODS FDP-NC were prepared with Poloxamer F125 (PXM) by the antisolvent precipitation method. The experimental setup aimed at fine-tuning polymer concentration, the proportion of antisolvent to solvent, and the duration of ultrasonication for NC formulation. RESULTS Optimized formulation was characterized for particle size, solubility, and PDI. Particle reduction of 74.96 times was achieved with a 9X solubility enhancement as equated to pure FDP. The morphology of NC was found to be crystalline through scanning electron microscopy observation. The formation of the crystal lattice in FDP-NC was further substantiated by the XRD and DSC results. Lowering of the heat of fusion of FDP-NC is a clear indication of size reduction. The stability studies showed no substantial change in physical parameters of the FDP-NC as assessed by particle size, zeta potential, and drug content. CONCLUSION The crystalline nature and improved solubility of FDP-NC improve the dissolution profile and pharmacodynamic data. The stability study data ensures that FDP-NC can be safely stored at 25℃. It is revealed that FDP-NC had a better release profile and improved pharmacodynamic effects as evident from better control over heart rate than FDP.
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Affiliation(s)
- Priyanka Maurya
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
| | - Pawan Pandey
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
| | - Samipta Singh
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
| | - Alka Sonkar
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
| | - Sonali Singh
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
| | - Shubhini Saraf
- Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, U.P., India
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5
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Bachmaier RD, Monschke M, Faber T, Krome AK, Pellequer Y, Stoyanov E, Lamprecht A, Wagner KG. In vitro and in vivo assessment of hydroxypropyl cellulose as functional additive for enabling formulations containing itraconazole. INTERNATIONAL JOURNAL OF PHARMACEUTICS-X 2021; 3:100076. [PMID: 33851133 PMCID: PMC8024662 DOI: 10.1016/j.ijpx.2021.100076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 11/26/2022]
Abstract
Using polymers as additives to formulate ternary amorphous solid dispersions (ASDs) has successfully been established to increase the bioavailability of poorly soluble drugs, when one polymer is not able to provide both, stabilizing the drug in the matrix and the supersaturated solution. Therefore, we investigated the influence of low-viscosity hydroxypropyl cellulose (HPC) polymers as an additive in HPMC based ternary ASD formulations made by hot-melt extrusion (HME) on the bioavailability of itraconazole (ITZ). The partitioning potential of the different HPC grades was screened in biphasic supersaturation assays. Solid-state analytics were performed using differential scanning calorimetry (DSC), X-ray powder diffraction (XRPD). The addition of HPCs, especially HPC-UL, resulted in a superior partitioned amount of ITZ in biphasic supersaturation assays. Moreover, the approach in using HPCs as an additive in HPMC based ASDs led to an increase in partitioned ITZ compared to Sporanox® in biorelevant biphasic dissolution studies. The results from the biphasic dissolution experiments correlated well with the in vivo studies, which revealed the highest oral bioavailability for the ternary ASD comprising HPC-UL and HPMC. Increased partitioning rate of itraconazole using low-viscosity HPC polymers. Enhanced bioavailability of itraconazole using HPC-UL as functional additive. Ternary amorphous solid dispersion with higher performance than Sporanox®.
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Key Words
- API, active pharmaceutical ingredient
- ASD, amorphous solid dispersion
- AUC, area under the curve
- AcN, acetonitrile
- Amorphous solid dispersion
- BCS, biopharmaceutical classification system
- Biphasic dissolution
- DMSO, dimethyl sulfoxide
- DSC, differential scanning calorimetry
- FaSSIF, fasted state simulated intestinal fluid
- GI, gastrointestinal
- HME, hot-melt extrusion
- HPC
- HPC, hydroxypropyl cellulose
- HPMC
- HPMC, hydroxypropyl methyl cellulose
- Hot-melt extrusion
- ITZ, itraconazole
- KTZ, ketoconazole
- NCE, new chemical entity
- OH-ITZ, hydroxy-itraconazole
- PM, physical mixture
- SD, spray-drying
- TG, glass transition temperature
- XRPD, x-ray powder diffraction
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Affiliation(s)
- Rafael D Bachmaier
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany
| | - Marius Monschke
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany
| | - Thilo Faber
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany
| | - Anna K Krome
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany
| | - Yann Pellequer
- UFR Santé, Laboratoire de Pharmacie Galénique, 19, rue Ambroise Paré, 25000 Besancon, France
| | - Edmont Stoyanov
- Nisso Chemical Europe GmbH, Berliner Allee 42, 40212 Düsseldorf, Germany
| | - Alf Lamprecht
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany.,UFR Santé, Laboratoire de Pharmacie Galénique, 19, rue Ambroise Paré, 25000 Besancon, France
| | - Karl G Wagner
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121 Bonn, Germany
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Patel AA, Patel RJ, Mishra P. Nanosuspension for oral delivery of tadalafil: Pharmacodynamic and pharmacokinetic studies. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Degrees of order: A comparison of nanocrystal and amorphous solids for poorly soluble drugs. Int J Pharm 2020; 586:119492. [PMID: 32505579 DOI: 10.1016/j.ijpharm.2020.119492] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 02/07/2023]
Abstract
Poor aqueous solubility is currently a prevalent issue in the development of small molecule pharmaceuticals. Several methods are possible for improving the solubility, dissolution rate and bioavailability of Biopharmaceutics Classification System (BCS) class II and class IV drugs. Two solid state approaches, which rely on reductions in order, and can theoretically be applied to all molecules without any specific chemical prerequisites (compared with e.g. ionizable or co-former groups, or sufficient lipophilicity), are the use of the amorphous form and nanocrystals. Research involving these two approaches is relatively extensive and commercial products are now available based on these technologies. Nevertheless, their formulation remains more challenging than with conventional dosage forms. This article describes these two technologies from both theoretical and practical perspectives by briefly discussing the physicochemical backgrounds behind these approaches, as well as the resulting practical implications, both positive and negative. Case studies demonstrating the benefits and challenges of these two techniques are presented.
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8
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Tomić I, Juretić M, Jug M, Pepić I, Cetina Čižmek B, Filipović-Grčić J. Preparation of in situ hydrogels loaded with azelaic acid nanocrystals and their dermal application performance study. Int J Pharm 2019; 563:249-258. [DOI: 10.1016/j.ijpharm.2019.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 03/31/2019] [Accepted: 04/06/2019] [Indexed: 12/23/2022]
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9
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Long CM, Tang K, Chokshi H, Fotaki N. Surface Dissolution UV Imaging for Investigation of Dissolution of Poorly Soluble Drugs and Their Amorphous Formulation. AAPS PharmSciTech 2019; 20:113. [PMID: 30761437 PMCID: PMC6394625 DOI: 10.1208/s12249-019-1317-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 01/22/2019] [Indexed: 12/21/2022] Open
Abstract
The aim of this study is to investigate the dissolution properties of poorly soluble drugs from their pure form and their amorphous formulation under physiological relevant conditions for oral administration based on surface dissolution ultraviolet (UV) imaging. Dissolution of two poorly soluble drugs (cefuroxime axetil and itraconazole) and their amorphous formulations (Zinnat® and Sporanox®) was studied with the Sirius Surface Dissolution Imager (SDI). Media simulating the fasted state conditions (compendial and biorelevant) with sequential media/flow rate change were used. The dissolution mechanism of cefuroxime axetil in simulated gastric fluid (SGF), fasted state simulated gastric fluid (FaSSGF) and simulated intestinal fluid (SIF) is predominantly swelling as opposed to the convective flow in fasted state simulated intestinal fluid (FaSSIF-V1), attributed to the effect of mixed micelles. For the itraconazole compact in biorelevant media, a clear upward diffusion of the dissolved itraconazole into the bulk buffer solution is observed. Dissolution of itraconazole from the Sporanox® compact is affected by the polyethylene glycol (PEG) gelling layer and hydroxypropyl methylcellulose (HPMC) matrix, and a steady diffusional dissolution pattern is revealed. A visual representation and a quantitative assessment of dissolution properties of poorly soluble compounds and their amorphous formulation can be obtained with the use of surface dissolution imaging under in vivo relevant conditions.
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Affiliation(s)
- Chiau Ming Long
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK
- Faculty of Pharmacy, Quest International University Perak, Ipoh, Perak, Malaysia
| | - Kin Tang
- Genentech, Inc., South San Francisco, California, USA
| | - Hitesh Chokshi
- Roche Pharma Research and Early Development, Roche Innovation Center, New York City, New York, USA
| | - Nikoletta Fotaki
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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10
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Joshi K, Chandra A, Jain K, Talegaonkar S. Nanocrystalization: An Emerging Technology to Enhance the Bioavailability of Poorly Soluble Drugs. Pharm Nanotechnol 2019; 7:259-278. [PMID: 30961518 PMCID: PMC6967137 DOI: 10.2174/2211738507666190405182524] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/18/2019] [Accepted: 04/01/2019] [Indexed: 01/08/2023]
Abstract
Most of the active pharmaceutical ingredient used in the management of disease have poor water solubility and offer grueling problems in drug formulation development since low solubility is generally associated with poor dissolution characteristics which leads to poor oral bioavailability. The great challenge for the development of a pharmaceutical product is to create its new formulation and drug delivery system to limit solubility problems of existing drug candidate. Limited drug-loading capacity requires a large amount of carrier material to get appropriate encapsulation of the drug, which is another major challenge in the development of pharmaceutical product which could be resolved by developing nanocrystals (NCs). A significant research in the past few years has been done to develop NCs which helps in the delivery of poorly water soluble drugs via different routes. The technology could continue to thrive as a useful tool in pharmaceutical sciences for the improvement of drug solubility, absorption and bioavailability. Many crystalline compounds have pulled in incredible consideration much of the time, due to their ability to show good physical and chemical properties when contrasted with their amorphous counterparts. Nanocrystals have been proven to show atypical properties compared to the bulk. This review article explores the principles of the important nanocrystallization techniques including NCs characterization and its application.
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Affiliation(s)
| | | | | | - Sushama Talegaonkar
- Address correspondence to this author at the Department of Pharmaceutics, Delhi Pharmaceutical Sciences and Research University, Pushp Vihar Sec III, New Delhi-110017, India and Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi-62, India; Tel: 9818453518; E-mail:
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11
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Hiew TN, Alaudin MIB, Chua SM, Heng PWS. A study of the impact of excipient shielding on initial drug release using UV imaging. Int J Pharm 2018; 553:229-237. [PMID: 30339946 DOI: 10.1016/j.ijpharm.2018.10.040] [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: 06/22/2018] [Revised: 08/26/2018] [Accepted: 10/15/2018] [Indexed: 12/20/2022]
Abstract
Knowledge on the dissolution behaviour of a drug is critical for efficient and effective product development. As the drug has almost always to be formulated with excipients in the design of a dosage form, it is important to examine the implications of the choice of excipients on the dissolution of the drug, among others, especially in the case of an immediate release dosage form. The objective of this study was to explore the potential of using an ultraviolet (UV) imaging technique to examine the effect of drug-excipient ratio on the initial dissolution of the drug, when formulated with a hydrophilic, water insoluble excipient. A series of drug-excipient binary blends with different ratios were prepared and compacted into 2 mm compacts, and their dissolution profiles captured with a UV imager. Chemical imaging via Raman spectroscopy was also performed on the compacts to quantify the fraction of drug presented on the compact surface. At low drug concentrations, a suppression in drug dissolution was observed, but beyond a critical drug-excipient ratio, the concentration of the excipient no longer played a role in affecting drug dissolution rates. Drug particle size was found to affect the critical drug-excipient ratio required to negate the shielding effect exerted by the excipient, such that a higher proportion of drug was required. It is postulated that the excipient served as a physical barrier, as well as competitor for water required for wetting during initial dissolution, thereby causing a delay in the wetting and dissolution of the drug.
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Affiliation(s)
- Tze Ning Hiew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Muhammad Ismail Bin Alaudin
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore
| | - Siang Meng Chua
- Meggle Singapore, 45 Jalan Pemimpin, #06-00 Foo Wah Industrial Building, Singapore 577197, Singapore
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
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12
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Wu C, Gao Y, Liu Y, Xu X. Pure paclitaxel nanoparticles: preparation, characterization, and antitumor effect for human liver cancer SMMC-7721 cells. Int J Nanomedicine 2018; 13:6189-6198. [PMID: 30349243 PMCID: PMC6188176 DOI: 10.2147/ijn.s169209] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Introduction Pure paclitaxel nanoparticles (PPN), consisting entirely of drug molecules, were prepared by the electrostatic spraying method as promising candidates for antitumor application. Compared with the traditional preparation method, the advantage of the electrostatic spraying method included high production rates, relatively small particle sizes, and ease of preparation. Materials and methods Paclitaxel was used to prepared PPN by electrostatic spray. The electrostatic spray device included a constant speed pump with a syringe, a high-voltage power supply, and a metal foil receiver was used to prepare and evaluate PPN. The syringe drew off a certain amount of paclitaxel chloroform solution (150 μg/mL) and was placed on the constant speed injection pump. The dissolution behavior of PPN was evaluated by dissolution test and the presence of paclitaxel in PPN was detected by X-Ray powder diffraction and differential scanning calorimetry. Effect of PPN on SMMC-7721 cells were studied by cell uptake, cell apoptosis and antitumor study. Results The results of X-ray powder diffraction and differential scanning calorimetry characterization showed that the PPN were in an amorphous state. A dissolution study indicated that PPN have a significantly enhanced dissolution rate of paclitaxel. Moreover, SMMC-7721 tumor cells treated with PPN exhibited a distinctly high uptake rate that promoted cell apoptosis. An in vivo antitumor study demonstrated that PPN had significant antitumor efficacy. Conclusion All conclusions verified that electrostatic spraying is a potential technology for developing PPN, and PPN can be regarded as a promising treatment for cancer.
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Affiliation(s)
- Chao Wu
- Pharmacy School, Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Yu Gao
- Department of Medical Oncology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, People's Republic of China,
| | - Ying Liu
- Pharmacy School, Jinzhou Medical University, Jinzhou, People's Republic of China
| | - XiaoYan Xu
- Pharmacy School, Jinzhou Medical University, Jinzhou, People's Republic of China
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Novakovic D, Isomäki A, Pleunis B, Fraser-Miller SJ, Peltonen L, Laaksonen T, Strachan CJ. Understanding Dissolution and Crystallization with Imaging: A Surface Point of View. Mol Pharm 2018; 15:5361-5373. [PMID: 30247922 PMCID: PMC6221374 DOI: 10.1021/acs.molpharmaceut.8b00840] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
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The tendency for crystallization
during storage and administration
is the most considerable hurdle for poorly water-soluble drugs formulated
in the amorphous form. There is a need to better detect often subtle
and complex surface crystallization phenomena and understand their
influence on the critical quality attribute of dissolution. In this
study, the interplay between surface crystallization of the amorphous
form during storage and dissolution testing, and its influence on
dissolution behavior, is analyzed for the first time with multimodal
nonlinear optical imaging (coherent anti-Stokes Raman scattering (CARS)
and sum frequency generation (SFG)). Complementary analyses are provided
with scanning electron microscopy, X-ray diffraction and infrared
and Raman spectroscopies. Amorphous indomethacin tablets were prepared
and subjected to two different storage conditions (30 °C/23%
RH and 30 °C/75% RH) for various durations and then dissolution
testing using a channel flow-through device. Trace levels of surface
crystallinity previously imaged with nonlinear optics after 1 or 2
days of storage did not significantly decrease dissolution and supersaturation
compared to the freshly prepared amorphous tablets while more extensive
crystallization after longer storage times did. Multimodal nonlinear
optical imaging of the tablet surfaces after 15 min of dissolution
revealed complex crystallization behavior that was affected by both
storage condition and time, with up to four crystalline polymorphs
simultaneously observed. In addition to the well-known α- and
γ-forms, the less reported metastable ε- and η-forms
were also observed, with the ε-form being widely observed in
samples that had retained significant surface amorphousness during
storage. This form was also prepared in the pure form and further
characterized. Overall, this study demonstrates the potential value
of nonlinear optical imaging, together with more established solid-state
analysis methods, to understand complex surface crystallization behavior
and its influence on drug dissolution during the development of amorphous
drugs and dosage forms.
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Affiliation(s)
- Dunja Novakovic
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , Viikinkaari 5 E , 00014 Helsinki , Finland
| | - Antti Isomäki
- Biomedicum Imaging Unit, Faculty of Medicine , University of Helsinki , Haartmaninkatu 8 , 00014 Helsinki , Finland
| | - Bibi Pleunis
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , Viikinkaari 5 E , 00014 Helsinki , Finland
| | - Sara J Fraser-Miller
- Dodd-Walls Center for Photonic and Quantum Technologies, Department of Chemistry , University of Otago , Dunedin 9016 , New Zealand
| | - Leena Peltonen
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , Viikinkaari 5 E , 00014 Helsinki , Finland
| | - Timo Laaksonen
- Laboratory of Chemistry and Bioengineering , Tampere University of Technology , Korkeakoulunkatu 8 , 33720 Tampere , Finland
| | - Clare J Strachan
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , Viikinkaari 5 E , 00014 Helsinki , Finland
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Selin M, Nummelin S, Deleu J, Ropponen J, Viitala T, Lahtinen M, Koivisto J, Hirvonen J, Peltonen L, Kostiainen MA, Bimbo LM. High-Generation Amphiphilic Janus-Dendrimers as Stabilizing Agents for Drug Suspensions. Biomacromolecules 2018; 19:3983-3993. [PMID: 30207704 DOI: 10.1021/acs.biomac.8b00931] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Pharmaceutical nanosuspensions are formed when drug crystals are suspended in aqueous media in the presence of stabilizers. This technology offers a convenient way to enhance the dissolution of poorly water-soluble drug compounds. The stabilizers exert their action through electrostatic or steric interactions, however, the molecular requirements of stabilizing agents have not been studied extensively. Here, four structurally related amphiphilic Janus-dendrimers were synthesized and screened to determine the roles of different macromolecular domains on the stabilization of drug crystals. Physical interaction and nanomilling experiments have substantiated that Janus-dendrimers with fourth generation hydrophilic dendrons were superior to third generation analogues and Poloxamer 188 in stabilizing indomethacin suspensions. Contact angle and surface plasmon resonance measurements support the hypothesis that Janus-dendrimers bind to indomethacin surfaces via hydrophobic interactions and that the number of hydrophobic alkyl tails determines the adsorption kinetics of the Janus-dendrimers. The results showed that amphiphilic Janus-dendrimers adsorb onto drug particles and thus can be used to provide steric stabilization against aggregation and recrystallization. The modular synthetic route for new amphiphilic Janus-dendrimers offers, thus, for the first time a versatile platform for stable general-use stabilizing agents of drug suspensions.
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Affiliation(s)
- Markus Selin
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland
| | - Sami Nummelin
- Biohybrid Materials, Department of Bioproducts and Biosystems , Aalto University , FI-00076 , Finland
| | - Jill Deleu
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland.,Faculty of Pharmaceutical Sciences , Ghent University , 9000 Ghent , Belgium
| | - Jarmo Ropponen
- VTT-Technical Research Centre of Finland Ltd , P.O. Box 1000, FI-02044 VTT Finland
| | - Tapani Viitala
- Division of Pharmaceutical Biosciences, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland
| | - Manu Lahtinen
- Department of Chemistry , University of Jyväskylä , FI-40014 , Finland
| | - Jari Koivisto
- Department of Chemistry and Materials Science , Aalto University , FI-00076 , Finland
| | - Jouni Hirvonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland
| | - Leena Peltonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland
| | - Mauri A Kostiainen
- Biohybrid Materials, Department of Bioproducts and Biosystems , Aalto University , FI-00076 , Finland.,HYBER Center of Excellence, Department of Applied Physics , Aalto University , FI-00076 , Finland
| | - Luis M Bimbo
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy , University of Helsinki , FI-00014 , Finland.,Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde , Glasgow , G4 ORE , United Kingdom
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15
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Kim HI, Park SY, Park SJ, Lee J, Cho KH, Jee JP, Kim HC, Maeng HJ, Jang DJ. Development and Evaluation of a Reconstitutable Dry Suspension to Improve the Dissolution and Oral Absorption of Poorly Water-Soluble Celecoxib. Pharmaceutics 2018; 10:pharmaceutics10030140. [PMID: 30158472 PMCID: PMC6161273 DOI: 10.3390/pharmaceutics10030140] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/20/2018] [Accepted: 08/26/2018] [Indexed: 11/17/2022] Open
Abstract
This study aims at developing and evaluating reconstitutable dry suspension (RDS) improved for dissolution rate, oral absorption, and convenience of use of poorly water-soluble celecoxib (CXB). Micro-sized CXB particle was used to manufacture nanosuspension by using bead milling and then RDS was made by spray-drying the nanosuspension with effective resuspension agent, dextrin. The redispersibility, morphology, particle size, crystallinity, stability, dissolution, and pharmacokinetic profile of the RDS were evaluated. RDS was effectively reconstituted into nanoparticles in 775.8 ± 11.6 nm. It was confirmed that CXB particles are reduced into needle-shape ones in size after the bead-milling process, and the description of CXB was the same in the reconstituted suspension. Through the CXB crystallinity study using differential scanning calorimetry (DSC) and XRD analysis, it was identified that CXB has the CXB active pharmaceutical ingredient (API)’s original crystallinity after the bead milling and spray-drying process. In vitro dissolution of RDS was higher than that of CXB powder (93% versus 28% dissolution at 30 min). Furthermore, RDS formulation resulted in 5.7 and 6.3-fold higher area under the curve (AUC∞) and peak concentration (Cmax) of CXB compared to after oral administration of CXB powder in rats. Collectively, our results suggest that the RDS may be a potential oral dosage formulation for CXB to improve its bioavailability and patient compliance.
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Affiliation(s)
- Hye-In Kim
- Department of Pharmaceutical Engineering, Inje University, Gimhae 50834, Korea.
- Institute of Digital Anti-Aging Healthcare, Inje University, Gimhae 50834, Korea.
| | - Sang Yeob Park
- Samyang Biopharmaceuticals Corporation, Seongnam 13488, Korea.
| | - Seok Ju Park
- Division of Nephrology, School of Medicine, Inje University, Busan 47392, Korea.
| | - Jewon Lee
- Department of Pharmaceutical Engineering, Inje University, Gimhae 50834, Korea.
| | - Kwan Hyung Cho
- Department of Pharmacy, College of Pharmacy, Inje University, Gimhae 50834, Korea.
| | - Jun-Pil Jee
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju 61452, Korea.
| | - Hee-Cheol Kim
- Institute of Digital Anti-Aging Healthcare, Inje University, Gimhae 50834, Korea.
| | - Han-Joo Maeng
- College of Pharmacy, Gachon University, Incheon 21936, Korea.
| | - Dong-Jin Jang
- Department of Pharmaceutical Engineering, Inje University, Gimhae 50834, Korea.
- Institute of Digital Anti-Aging Healthcare, Inje University, Gimhae 50834, Korea.
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16
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Peltonen L. Design Space and QbD Approach for Production of Drug Nanocrystals by Wet Media Milling Techniques. Pharmaceutics 2018; 10:E104. [PMID: 30044395 PMCID: PMC6161287 DOI: 10.3390/pharmaceutics10030104] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/04/2018] [Accepted: 07/19/2018] [Indexed: 12/24/2022] Open
Abstract
Drug nanocrystals are nanosized solid drug particles, the most important application of which is the improvement of solubility properties of poorly soluble drug materials. Drug nanocrystals can be produced by many different techniques, but the mostly used are different kinds of media milling techniques; in milling, particle size of bulk sized drug material is decreased, with the aid of milling beads, to nanometer scale. Utilization of Quality by Design, QbD, approach in nanomilling improves the process-understanding of the system, and recently, the number of studies using the QbD approach in nanomilling has increased. In the QbD approach, the quality is built into the products and processes throughout the whole production chain. Definition of Critical Quality Attributes, CQAs, determines the targeted final product properties. CQAs are confirmed by setting Critical Process Parameters, CPPs, which include both process parameters but also input variables, like stabilizer amount or the solid state form of the drug. Finally, Design Space determines the limits in which CPPs should be in order to reach CQAs. This review discusses the milling process and process variables, CPPs, their impact on product properties, CQAs and challenges of the QbD approach in nanomilling studies.
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Affiliation(s)
- Leena Peltonen
- Division of Pharmaceutical Chemistry and Technology, Drug Research Program, Faculty of Pharmacy, University of Helsinki, P.O. Box 56, 00014 Helsinki, Finland.
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17
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Practical guidelines for the characterization and quality control of pure drug nanoparticles and nano-cocrystals in the pharmaceutical industry. Adv Drug Deliv Rev 2018; 131:101-115. [PMID: 29920294 DOI: 10.1016/j.addr.2018.06.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/08/2018] [Accepted: 06/11/2018] [Indexed: 12/14/2022]
Abstract
The number of poorly soluble drug candidates is increasing, and this is also seen in the research interest towards drug nanoparticles and (nano-)cocrystals; improved solubility is the most important application of these nanosystems. In order to confirm the functionality of these nanoparticles throughout their lifecycle, repeatability of the formulation processes, functional performance of the formed systems in pre-determined way and system stability, a thorough physicochemical understanding with the aid of necessary analytical techniques is needed. Even very minor deviations in for example particle size or size deviation in nanoscale can alter the product bioavailability, and the effect is even more dramatic with the smallest particle size fractions. Also, small particle size sets special requirements for the analytical techniques. In this review most important physicochemical properties of drug nanocrystals and nano-cocrystals are presented, suitable analytical techniques, their pros and cons, are described with the extra input on practical point of view.
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18
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A nanocomplex of Cu(II) with theophylline drug; synthesis, characterization, and anticancer activity against K562 cell line. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Peltonen L, Hirvonen J. Drug nanocrystals - Versatile option for formulation of poorly soluble materials. Int J Pharm 2017; 537:73-83. [PMID: 29262301 DOI: 10.1016/j.ijpharm.2017.12.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/23/2017] [Accepted: 12/02/2017] [Indexed: 10/18/2022]
Abstract
Poor solubility of drug compounds is a great issue in drug industry today and decreasing particle size is one efficient and simple way to overcome this challenge. Drug nanocrystals are solid nanosized drug particles, which are covered by a stabilizer layer. In nanoscale many physical properties, like compound solubility, are different from the solubility of bulk material, and due to this drug nanocrystals can reach supersaturation as compared to thermodynamic solubility. The most important effect of the smaller particle size is that dissolution rate is highly enhanced mainly due to the increased surface area. In this review the most important properties of nanocrystalline drug compounds are presented, with multiple examples of the development and characterization of nanocrystalline drug formulations.
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Affiliation(s)
- Leena Peltonen
- Faculty of Pharmacy, University of Helsinki, P.O. Box 56, Viikinkaari 5 E, 00014, Finland.
| | - Jouni Hirvonen
- Faculty of Pharmacy, University of Helsinki, P.O. Box 56, Viikinkaari 5 E, 00014, Finland.
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20
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Lyophilic matrix method for dissolution and release studies of nanoscale particles. J Pharm Biomed Anal 2017; 145:549-554. [DOI: 10.1016/j.jpba.2017.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 11/24/2022]
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21
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Østergaard J. UV imaging in pharmaceutical analysis. J Pharm Biomed Anal 2017; 147:140-148. [PMID: 28797957 DOI: 10.1016/j.jpba.2017.07.055] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/30/2017] [Accepted: 07/31/2017] [Indexed: 12/12/2022]
Abstract
UV imaging provides spatially and temporally resolved absorbance measurements, which are highly useful in pharmaceutical analysis. Commercial UV imaging instrumentation was originally developed as a detector for separation sciences, but the main use is in the area of in vitro dissolution and release testing studies. The review covers the basic principles of the technology and summarizes the main applications in relation to intrinsic dissolution rate determination, excipient compatibility studies and in vitro release characterization of drug substances and vehicles intended for parenteral administration. UV imaging has potential for providing new insights to drug dissolution and release processes in formulation development by real-time monitoring of swelling, precipitation, diffusion and partitioning phenomena. Limitations of current instrumentation are discussed and a perspective to new developments and opportunities given as new instrumentation is emerging.
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Affiliation(s)
- Jesper Østergaard
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
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22
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Dissolution enhancement of griseofulvin from griseofulvin-sodium dodecyl sulfate discs investigated by UV imaging. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.05.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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23
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Kääriäinen TO, Kemell M, Vehkamäki M, Kääriäinen ML, Correia A, Santos HA, Bimbo LM, Hirvonen J, Hoppu P, George SM, Cameron DC, Ritala M, Leskelä M. Surface modification of acetaminophen particles by atomic layer deposition. Int J Pharm 2017; 525:160-174. [PMID: 28432020 DOI: 10.1016/j.ijpharm.2017.04.031] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 12/25/2022]
Abstract
Active pharmaceutical ingredients (APIs) are predominantly organic solid powders. Due to their bulk properties many APIs require processing to improve pharmaceutical formulation and manufacturing in the preparation for various drug dosage forms. Improved powder flow and protection of the APIs are often anticipated characteristics in pharmaceutical manufacturing. In this work, we have modified acetaminophen particles with atomic layer deposition (ALD) by conformal nanometer scale coatings in a one-step coating process. According to the results, ALD, utilizing common chemistries for Al2O3, TiO2 and ZnO, is shown to be a promising coating method for solid pharmaceutical powders. Acetaminophen does not undergo degradation during the ALD coating process and maintains its stable polymorphic structure. Acetaminophen with nanometer scale ALD coatings shows slowed drug release. ALD TiO2 coated acetaminophen particles show cytocompatibility whereas those coated with thicker ZnO coatings exhibit the most cytotoxicity among the ALD materials under study when assessed in vitro by their effect on intestinal Caco-2 cells.
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Affiliation(s)
- Tommi O Kääriäinen
- Laboratory of Inorganic Chemistry, University of Helsinki, P.O. Box 55 (A.I.Virtasen aukio 1), FI-00014 Helsinki, Finland; Department of Chemistry and Biochemistry and Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, United States; NovaldMedical Ltd Oy, Telkäntie 5, 82500 Kitee, Finland.
| | - Marianna Kemell
- Laboratory of Inorganic Chemistry, University of Helsinki, P.O. Box 55 (A.I.Virtasen aukio 1), FI-00014 Helsinki, Finland
| | - Marko Vehkamäki
- Laboratory of Inorganic Chemistry, University of Helsinki, P.O. Box 55 (A.I.Virtasen aukio 1), FI-00014 Helsinki, Finland
| | - Marja-Leena Kääriäinen
- Department of Chemistry and Biochemistry and Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, United States; NovaldMedical Ltd Oy, Telkäntie 5, 82500 Kitee, Finland
| | - Alexandra Correia
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A Santos
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Luis M Bimbo
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Jouni Hirvonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Pekka Hoppu
- NovaldMedical Ltd Oy, Telkäntie 5, 82500 Kitee, Finland
| | - Steven M George
- Department of Chemistry and Biochemistry and Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, United States
| | - David C Cameron
- R&D Centre for Low-Cost Plasma and Nanotechnology Surface Modification, Masaryk University, Kotlářská 267/2, 611 37 Brno, Czech Republic
| | - Mikko Ritala
- Laboratory of Inorganic Chemistry, University of Helsinki, P.O. Box 55 (A.I.Virtasen aukio 1), FI-00014 Helsinki, Finland
| | - Markku Leskelä
- Laboratory of Inorganic Chemistry, University of Helsinki, P.O. Box 55 (A.I.Virtasen aukio 1), FI-00014 Helsinki, Finland
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24
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Sun Y, Østergaard J. Application of UV Imaging in Formulation Development. Pharm Res 2016; 34:929-940. [PMID: 27766463 DOI: 10.1007/s11095-016-2047-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/03/2016] [Indexed: 12/18/2022]
Abstract
Efficient drug delivery is dependent on the drug substance dissolving in the body fluids, being released from dosage forms and transported to the site of action. A fundamental understanding of the interplay between the physicochemical properties of the active compound and pharmaceutical excipients defining formulation behavior after exposure to the aqueous environments and pharmaceutical performance is critical in pharmaceutical development, manufacturing and quality control of drugs. UV imaging has been explored as a tool for qualitative and quantitative characterization of drug dissolution and release with the characteristic feature of providing real-time visualization of the solution phase drug transport in the vicinity of the formulation. Events occurring during drug dissolution and release, such as polymer swelling, drug precipitation/recrystallization, or solvent-mediated phase transitions related to the structural properties of the drug substance or formulation can be monitored. UV imaging is a non-intrusive and simple-to-operate analytical technique which holds potential for providing a mechanistic foundation for formulation development. This review aims to cover applications of UV imaging in the early and late phase pharmaceutical development with a special focus on the relation between structural properties and performance. Potential areas of future advancement and application are also discussed.
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Affiliation(s)
- Yu Sun
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100, Copenhagen Ø, Denmark
| | - Jesper Østergaard
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100, Copenhagen Ø, Denmark.
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25
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Performance Parameters and Characterizations of Nanocrystals: A Brief Review. Pharmaceutics 2016; 8:pharmaceutics8030026. [PMID: 27589788 PMCID: PMC5039445 DOI: 10.3390/pharmaceutics8030026] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/22/2016] [Accepted: 08/22/2016] [Indexed: 11/17/2022] Open
Abstract
Poor bioavailability of drugs associated with their poor solubility limits the clinical effectiveness of almost 40% of the newly discovered drug moieties. Low solubility, coupled with a high log p value, high melting point and high dose necessitates exploration of alternative formulation strategies for such drugs. One such novel approach is formulation of the drugs as “Nanocrystals”. Nanocrystals are primarily comprised of drug and surfactants/stabilizers and are manufactured by “top-down” or “bottom-up” methods. Nanocrystals aid the clinical efficacy of drugs by various means such as enhancement of bioavailability, lowering of dose requirement, and facilitating sustained release of the drug. This effect is dependent on the various characteristics of nanocrystals (particle size, saturation solubility, dissolution velocity), which have an impact on the improved performance of the nanocrystals. Various sophisticated techniques have been developed to evaluate these characteristics. This article describes in detail the various characterization techniques along with a brief review of the significance of the various parameters on the performance of nanocrystals.
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26
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Tuomela A, Saarinen J, Strachan CJ, Hirvonen J, Peltonen L. Production, applications and in vivo fate of drug nanocrystals. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2016.02.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Shah DA, Murdande SB, Dave RH. A Review: Pharmaceutical and Pharmacokinetic Aspect of Nanocrystalline Suspensions. J Pharm Sci 2016; 105:10-24. [PMID: 26580860 DOI: 10.1002/jps.24694] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 09/23/2015] [Accepted: 09/25/2015] [Indexed: 11/11/2022]
Abstract
Nanocrystals have emerged as a potential formulation strategy to eliminate the bioavailability-related problems by enhancing the initial dissolution rate and moderately super-saturating the thermodynamic solubility. This review contains an in-depth knowledge of, the processing method for formulation, an accurate quantitative assessment of the solubility and dissolution rates and their correlation to observe pharmacokinetic data. Poor aqueous solubility is considered the major hurdle in the development of pharmaceutical compounds. Because of a lack of understanding with regard to the change in the thermodynamic and kinetic properties (i.e., solubility and dissolution rate) upon nanosizing, we critically reviewed the literatures for solubility determination to understand the significance and accuracy of the implemented analytical method. In the latter part, we reviewed reports that have quantitatively studied the effect of the particle size and the surface area change on the initial dissolution rate enhancement using alternative approaches besides the sink condition dissolution. The lack of an apparent relationship between the dissolution rate enhancement and the observed bioavailability are discussed by reviewing the reported in vivo data on animal models along with the particle size and food effect. The review will provide comprehensive information to the pharmaceutical scientist in the area of nanoparticulate drug delivery.
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28
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Understanding Critical Quality Attributes for Nanocrystals from Preparation to Delivery. Molecules 2015; 20:22286-300. [PMID: 26703528 PMCID: PMC6332140 DOI: 10.3390/molecules201219851] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/08/2015] [Accepted: 12/08/2015] [Indexed: 12/28/2022] Open
Abstract
Poor solubility of active pharmaceutical ingredients (APIs) is a great challenge for the pharmaceutical industry and, hence, drug nanocrystals are widely studied as one solution to overcome these solubility problems. Drug nanocrystals have comparatively simple structures which make them attractive for the formulation for poorly soluble drugs, and their capability to improve the dissolution in vitro is easily demonstrated, but turning the in vitro superior properties of nanocrystals to success in vivo, is often demanding: controlled (including enhanced) drug dissolution followed by successful permeation is not guaranteed, if for example, the dissolved drug precipitates before it is absorbed. In this review critical quality attributes related to nanocrystal formulations from production to final product performance in vivo are considered. Many important parameters exist, but here physical stability (aggregation tendency and solid state form), solubility properties influencing dissolution and supersaturation, excipient use to promote the maintenance of supersaturation, and finally the fate of nanocrystals in vivo are the main subjects of our focus.
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29
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Tuomela A, Laaksonen T, Laru J, Antikainen O, Kiesvaara J, Ilkka J, Oksala O, Rönkkö S, Järvinen K, Hirvonen J, Peltonen L. Solid formulations by a nanocrystal approach: critical process parameters regarding scale-ability of nanocrystals for tableting applications. Int J Pharm 2015; 485:77-86. [PMID: 25746735 DOI: 10.1016/j.ijpharm.2015.03.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/02/2015] [Accepted: 03/04/2015] [Indexed: 12/11/2022]
Abstract
Nanocrystallization is among the foremost drug delivery platform approaches for the commercial development of poorly soluble drugs. There exists an urge to enable a universal shift of the production of the solid nanocrystal formulations from laboratory scale to industrially feasible scale. The success of any formulation development depends on its transferability to large scale manufacture. The objectives of the study were to increase the nanocrystallization batch size and to screen and optimize parameters for industrially feasible itraconazole (ITC) and indomethacin (IND) nanocrystal composition for tablet formulation. Thus, ITC and IND were transformed into nanocrystal suspensions, using an increased batch size of a wet milling process, freeze-dried, and further developed into both direct compression (DC) and granulated (G) tableting masses. According to the investigated powder and tablet properties (true density, flowability, dose uniformity, maximum upper punch force, crushing strength, dissolution and disintegration) and stability testings, it was clear that the amount of the nanocrystals in the solid tablet formulation is critical in order to fully utilize the benefits of the nanocrystals, i.e., fast dissolution, and to produce high-quality tablets. The DC designs of both the model drugs with compositions including 40% of freeze-dried nanocrystalline drug powder outperformed the corresponding granulated tablets in all parameters after the stability surveillance.
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Affiliation(s)
- Annika Tuomela
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland.
| | - Timo Laaksonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Johanna Laru
- Orion Pharma R&D, Formulation Research, Espoo, Finland
| | - Osmo Antikainen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | | | | | | | - Seppo Rönkkö
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Kristiina Järvinen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jouni Hirvonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Leena Peltonen
- Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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30
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Real-time UV imaging identifies the role of pH in insulin dissolution behavior in hydrogel-based subcutaneous tissue surrogate. Eur J Pharm Sci 2015; 69:26-36. [DOI: 10.1016/j.ejps.2014.12.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/17/2014] [Accepted: 12/17/2014] [Indexed: 12/28/2022]
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31
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Kuentz M. Analytical technologies for real-time drug dissolution and precipitation testing on a small scale. J Pharm Pharmacol 2014; 67:143-59. [DOI: 10.1111/jphp.12271] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 04/13/2014] [Indexed: 12/24/2022]
Abstract
Abstract
Objectives
This review focuses on real-time analytics of drug dissolution and precipitation testing on a comparatively small scale.
Key findings
Miniaturisation of test equipment is an important trend in pharmaceutics, and several small-scale experiments have been reported for drug dissolution and precipitation testing. Such tests typically employ analytics in real-time. Fibre optic ultraviolet (UV) analytics has become a well-established method in this field. Novel imaging techniques are emerging that use visible or UV light; also promising is Fourier transform infrared imaging based on attenuated total reflection. More information than just a rate constant is obtained from these methods. The early phase of a dissolution process can be assessed and drug precipitation may eventually be observed. Some real-time techniques are particularly well suited to studying drug precipitation during formulation dispersion; for example, turbidity, focused beam reflectance measurement and Raman spectroscopy.
Summary
Small-scale dissolution tests equipped with real-time analytics have become important to screen drug candidates as well as to study prototype formulations in early development. Future approaches are likely to combine different analytical techniques including imaging. Miniaturisation started with mini-vessels or small vials and future assays of dissolution research will probably more often reach the level of parallel well plates and microfluidic channels.
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Affiliation(s)
- Martin Kuentz
- Institute of Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland
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Sarnes A, Kovalainen M, Häkkinen MR, Laaksonen T, Laru J, Kiesvaara J, Ilkka J, Oksala O, Rönkkö S, Järvinen K, Hirvonen J, Peltonen L. Nanocrystal-based per-oral itraconazole delivery: superior in vitro dissolution enhancement versus Sporanox® is not realized in in vivo drug absorption. J Control Release 2014; 180:109-16. [PMID: 24566254 DOI: 10.1016/j.jconrel.2014.02.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 02/11/2014] [Accepted: 02/15/2014] [Indexed: 11/29/2022]
Abstract
Nanoscience holds true promise in enabling efficient formulation development and in vivo delivery of poorly water soluble drugs. The objective of this study was to formulate solid oral nanocrystal delivery systems of itraconazole, and thus enhance the oral bioavailability of the very poorly soluble drug. Nanocrystal suspensions were prepared by a rapid wet milling technique, after which the suspensions were transformed into solid dosage forms by both freeze drying and granulating. Finally, the obtained nanocrystalline powders were capsule-packed as well as compacted to tablets. After in vitro analysis, the formulations (nanocrystal suspension (NPs), freeze dried NPs, granulated NPs) were tested in vivo in a rat model, and compared with commercial itraconazole formulation (Sporanox). Importantly, the results indicated rapid dissolution of the nanocrystalline itraconazole with enhanced bioavailability compared to physical mixture. Drug dissolution in vitro was immediate from NPs and freeze dried powder, and differed significantly from the marketed product (P=0.004 and 0.002, correspondingly) until 30min. Freeze drying was detected to be especially advantageous for the solid dosage forms. It is possible to maintain the original character of the nanocrystals, e.g. rapid dissolution, even after tableting of the nanocrystalline powders. Interestingly, the marketed product out-performed the nanocrystalline formulations in vivo, even though the nanocrystals provided reasonable bioavailability of itraconazole absorption as well. The efficient in vitro dissolution enhancement of the nanocrystalline formulations compared to Sporanox® was not realized in in vivo drug absorption.
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Affiliation(s)
- Annika Sarnes
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland.
| | - Miia Kovalainen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland; Institute of Biomedicine, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Merja R Häkkinen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Timo Laaksonen
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Johanna Laru
- Orion Pharma R&D, Formulation Research, Espoo, Finland
| | | | | | | | - Seppo Rönkkö
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Kristiina Järvinen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jouni Hirvonen
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Leena Peltonen
- Division of Pharmaceutical Technology, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
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