1
|
Guan H, Wang M, Yu S, Wang C, Chen Q, Chen Y, Zhang W, Fan J. Candesartan cilexetil formulations in mesoporous silica: preparation, enhanced dissolution in vitro, and oral bioavailability in vivo. J Pharm Sci 2024:S0022-3549(24)00253-3. [PMID: 39094942 DOI: 10.1016/j.xphs.2024.07.007] [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: 02/19/2024] [Revised: 07/08/2024] [Accepted: 07/09/2024] [Indexed: 08/04/2024]
Abstract
Candesartan cilexetil (CC) is one of well-tolerated antihypertensive drugs, while its poor solubility and low bioavailability limit its use. Herein, two mesoporous silica (Syloid XDP 3150 and Syloid AL-1 FP) and the corresponding amino-modified products (N-XDP 3150 and N-AL-1 FP) have been selected as the carriers of Candesartan cilexetil to prepare solid dispersion through solvent immersion, and characterized through using powder X-ray diffraction analysis, infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy, and solid-state nuclear magnetic resonance spectroscopy, etc. The state of CC changed from crystalline to amorphous after loading onto the silica carriers, in which no interactions between CC and silica existed. Then, the dissolution behaviors in vitro were studied through using flow-through cell dissolution method. CC-XDP 3150 sample exhibited the most extensive dissolution, and the cumulative release of CC from it was 1.88-fold larger than that of CC. Moreover, the pharmacokinetic results in rats revealed that the relative bioavailability of CC-XDP 3150 and CC-N-XDP 3150 solid dispersions were estimated to be 326 % and 238 % in comparison with CC, respectively. Clearly, pore size, pore volume, and surface properties of silica carrier have remarkable effect on loading, dissolution and bioavailability of CC. In brief, this work will provide valuable information in construction of mesoporous silica-based delivery system toward poorly water-soluble drugs.
Collapse
Affiliation(s)
- Huijian Guan
- School of Chemistry, South China Normal University, Key Laboratory of Process Control and Quality Evaluation of Chiral Drugs, Guangdong Provincial Drug Administration, Guangzhou Key Laboratory of Biomedical Analytical Chemistry, Guangzhou 510006, China
| | - Miao Wang
- Department of Pharmaceutical Excipients, Guangdong Institute for Drug Control, Key Laboratory of Quality Control and Evaluation of Pharmaceutical Excipients, State Drug Administration, Guangzhou 510663, China
| | - Shaowen Yu
- Department of Pharmaceutical Excipients, Guangdong Institute for Drug Control, Key Laboratory of Quality Control and Evaluation of Pharmaceutical Excipients, State Drug Administration, Guangzhou 510663, China
| | - Caimei Wang
- Department of Pharmaceutical Excipients, Guangdong Institute for Drug Control, Key Laboratory of Quality Control and Evaluation of Pharmaceutical Excipients, State Drug Administration, Guangzhou 510663, China
| | - Qi Chen
- Drug Safety Evaluation Center, Drug Safety Evaluation Center, Guangdong Institute for Drug Control, Guangzhou 510663, China
| | - Ying Chen
- Department of Pharmaceutical Excipients, Guangdong Institute for Drug Control, Key Laboratory of Quality Control and Evaluation of Pharmaceutical Excipients, State Drug Administration, Guangzhou 510663, China.
| | - Weiguang Zhang
- School of Chemistry, South China Normal University, Key Laboratory of Process Control and Quality Evaluation of Chiral Drugs, Guangdong Provincial Drug Administration, Guangzhou Key Laboratory of Biomedical Analytical Chemistry, Guangzhou 510006, China
| | - Jun Fan
- School of Chemistry, South China Normal University, Key Laboratory of Process Control and Quality Evaluation of Chiral Drugs, Guangdong Provincial Drug Administration, Guangzhou Key Laboratory of Biomedical Analytical Chemistry, Guangzhou 510006, China.
| |
Collapse
|
2
|
Koch N, Jennotte O, Bourcy Q, Lechanteur A, Deville M, Charlier C, Chiap P, Cardot JM, Evrard B. Evaluation of amorphous and lipid-based formulation strategies to increase the in vivo cannabidiol bioavailability in piglets. Int J Pharm 2024; 657:124173. [PMID: 38685441 DOI: 10.1016/j.ijpharm.2024.124173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/22/2024] [Accepted: 04/26/2024] [Indexed: 05/02/2024]
Abstract
Cannabidiol (CBD) suffers from poor oral bioavailability due to poor aqueous solubility and high metabolism, and is generally administered in liquid lipid vehicles. Solid-state formulations of CBD have been developed, but their ability to increase the oral bioavailability has not yet been proven in vivo. Various approaches are investigated to increase this bioavailability. This study aimed to demonstrate the enhancement of the oral bioavailability of oral solid dosage forms of amorphous CBD and lipid-based CBD formulation compared to crystalline CBD. Six piglets received the three formulations, in a cross-over design. CBD and 7 - COOH - CBD, a secondary metabolite used as an indicator of hepatic degradation, were analyzed in plasma. A 10.9-fold and 6.8-fold increase in oral bioavailability was observed for the amorphous and lipid formulations, respectively. However, the lipid-based formulation allowed reducing the inter-variability when administered to fasted animals. An entero-hepatic cycle was confirmed for amorphous formulations. Finally, this study showed that the expected protective effect of lipids against hepatic degradation of the lipid-based formulation did not occur, since the ratio CBD/metabolite was higher than that of the amorphous one.
Collapse
Affiliation(s)
- N Koch
- University of Liège, Laboratory of Pharmaceutical Technology and Biopharmacy, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium.
| | - O Jennotte
- University of Liège, Laboratory of Pharmaceutical Technology and Biopharmacy, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | - Q Bourcy
- University of Liège, Laboratory of Pharmaceutical Technology and Biopharmacy, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | - A Lechanteur
- University of Liège, Laboratory of Pharmaceutical Technology and Biopharmacy, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | - M Deville
- Academic Hospital of Liège, Department of Toxicology, GLP-AEPT Unit, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | - C Charlier
- Academic Hospital of Liège, Department of Toxicology, GLP-AEPT Unit, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | - P Chiap
- Academic Hospital of Liège, Department of Toxicology, GLP-AEPT Unit, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| | | | - B Evrard
- University of Liège, Laboratory of Pharmaceutical Technology and Biopharmacy, Center for Interdisciplinary Research on Medicines (CIRM), Liège 4000, Belgium
| |
Collapse
|
3
|
Kamankesh M, Yadegar A, Llopis-Lorente A, Liu C, Haririan I, Aghdaei HA, Shokrgozar MA, Zali MR, Miri AH, Rad-Malekshahi M, Hamblin MR, Wacker MG. Future Nanotechnology-Based Strategies for Improved Management of Helicobacter pylori Infection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2302532. [PMID: 37697021 DOI: 10.1002/smll.202302532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/25/2023] [Indexed: 09/13/2023]
Abstract
Helicobacter pylori (H. pylori) is a recalcitrant pathogen, which can cause gastric disorders. During the past decades, polypharmacy-based regimens, such as triple and quadruple therapies have been widely used against H. pylori. However, polyantibiotic therapies can disturb the host gastric/gut microbiota and lead to antibiotic resistance. Thus, simpler but more effective approaches should be developed. Here, some recent advances in nanostructured drug delivery systems to treat H. pylori infection are summarized. Also, for the first time, a drug release paradigm is proposed to prevent H. pylori antibiotic resistance along with an IVIVC model in order to connect the drug release profile with a reduction in bacterial colony counts. Then, local delivery systems including mucoadhesive, mucopenetrating, and cytoadhesive nanobiomaterials are discussed in the battle against H. pylori infection. Afterward, engineered delivery platforms including polymer-coated nanoemulsions and polymer-coated nanoliposomes are poposed. These bioinspired platforms can contain an antimicrobial agent enclosed within smart multifunctional nanoformulations. These bioplatforms can prevent the development of antibiotic resistance, as well as specifically killing H. pylori with no or only slight negative effects on the host gastrointestinal microbiota. Finally, the essential checkpoints that should be passed to confirm the potential effectiveness of anti-H. pylori nanosystems are discussed.
Collapse
Affiliation(s)
- Mojtaba Kamankesh
- Polymer Chemistry Department, School of Science, University of Tehran, PO Box 14155-6455, Tehran, 14144-6455, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717411, Iran
| | - Antoni Llopis-Lorente
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Universitat Politècnica de València, Universitat de València, CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Insituto de Salud Carlos III, Valencia, 46022, Spain
| | - Chenguang Liu
- College of Marine Life Science, Ocean University of China, Qingdao, 266003, P.R. China
| | - Ismaeil Haririan
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717411, Iran
| | | | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, 1985717411, Iran
| | - Amir Hossein Miri
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
| | - Mazda Rad-Malekshahi
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, 1417614411, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, 2028, South Africa
| | - Matthias G Wacker
- Department of Pharmacy, Faculty of Science, National University of Singapore, 4 Science Drive 2, Singapore, 117545, Singapore
| |
Collapse
|
4
|
Wang Y, Li F, Xin J, Xu J, Yu G, Shi Q. Mesoporous Drug Delivery System: From Physical Properties of Drug in Solid State to Controlled Release. Molecules 2023; 28:molecules28083406. [PMID: 37110638 PMCID: PMC10145233 DOI: 10.3390/molecules28083406] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/06/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Mesoporous materials, which exhibit great potential in the control of polymorphs and delivery of poorly water-soluble drugs, have obtained considerable attention in the field of pharmaceutical science. The physical properties and release behaviors of amorphous or crystalline drugs may be affected by formulating them into mesoporous drug delivery systems. In the past few decades, an increasing amount of papers have been written about mesoporous drug delivery systems, which play a crucial role in improving the properties of drugs. Herein, mesoporous drug delivery systems are comprehensively reviewed in terms of their physicochemical characteristics, control of polymorphic forms, physical stability, in vitro performance, and in vivo performance. Moreover, the challenges and strategies of developing robust mesoporous drug delivery systems are also discussed.
Collapse
Affiliation(s)
- Yanan Wang
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
- School of Pharmacy, Faculty of Health and Medical Science, Taylor's University, Subang Jaya 47500, Malaysia
| | - Fang Li
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Junbo Xin
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Jia Xu
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Guanghua Yu
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Qin Shi
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| |
Collapse
|
5
|
Zhang W, Xiao C, Xiao Y, Tian B, Gao D, Fan W, Li G, He S, Zhai G. An overview of in vitro dissolution testing for film dosage forms. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
6
|
Zhang TY, Du RF, Wang YJ, Hu JL, Wu F, Feng Y. Research Progress of Preparation Technology of Ion-Exchange Resin Complexes. AAPS PharmSciTech 2022; 23:105. [PMID: 35381945 DOI: 10.1208/s12249-022-02260-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 03/06/2022] [Indexed: 11/30/2022] Open
Abstract
As insoluble polymer materials, ion-exchange resins (IERs) can exchange their own ions with desirable charged ions in the solution. According to the affinity of active moieties for soluble counterions, IERs could be categorized into the following four types: strongly acidic cation, weakly acidic cation, strongly basic anion, and weakly basic anion exchange resins. Due to their relative safety and high drug-loading capacity, IERs have garnered extensive attention in the pharmaceutical field since the 1950s. As numerous investigations combine drugs with IERs, this article summarizes the technologies employed in these studies from four aspects: IER screening principles, combining technologies, characterization methods, and in vitro and in vivo release of drug-resinate complexes. In addition, the advantages and disadvantages of various technologies and their scope are expounded. The article provides new insights on the preparation of ion-exchange resin complexes.
Collapse
|
7
|
DMPC/Chol liposomal copper CX5461 is therapeutically superior to a DSPC/Chol formulation. J Control Release 2022; 345:75-90. [DOI: 10.1016/j.jconrel.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 02/25/2022] [Accepted: 03/02/2022] [Indexed: 11/20/2022]
|
8
|
Huang Y, Yu Q, Chen Z, Wu W, Zhu Q, Lu Y. In vitro and in vivo correlation for lipid-based formulations: Current status and future perspectives. Acta Pharm Sin B 2021; 11:2469-2487. [PMID: 34522595 PMCID: PMC8424225 DOI: 10.1016/j.apsb.2021.03.025] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/03/2021] [Accepted: 01/15/2021] [Indexed: 12/17/2022] Open
Abstract
Lipid-based formulations (LBFs) have demonstrated a great potential in enhancing the oral absorption of poorly water-soluble drugs. However, construction of in vitro and in vivo correlations (IVIVCs) for LBFs is quite challenging, owing to a complex in vivo processing of these formulations. In this paper, we start with a brief introduction on the gastrointestinal digestion of lipid/LBFs and its relation to enhanced oral drug absorption; based on the concept of IVIVCs, the current status of in vitro models to establish IVIVCs for LBFs is reviewed, while future perspectives in this field are discussed. In vitro tests, which facilitate the understanding and prediction of the in vivo performance of solid dosage forms, frequently fail to mimic the in vivo processing of LBFs, leading to inconsistent results. In vitro digestion models, which more closely simulate gastrointestinal physiology, are a more promising option. Despite some successes in IVIVC modeling, the accuracy and consistency of these models are yet to be validated, particularly for human data. A reliable IVIVC model can not only reduce the risk, time, and cost of formulation development but can also contribute to the formulation design and optimization, thus promoting the clinical translation of LBFs.
Collapse
Key Words
- ANN, artificial neural network
- AUC, area under the curve
- Absorption
- BCS, biopharmaceutics classification system
- BE, bioequivalence
- CETP, cholesterol ester transfer protein
- Cmax, peak plasma concentration
- DDS, drug delivery system
- FDA, US Food and Drug Administration
- GI, gastrointestinal
- HLB, hydrophilic–lipophilic balance
- IVIVC, in vitro and in vivo correlation
- IVIVR, in vitro and in vivo relationship
- In silico prediction
- In vitro and in vivo correlations
- LBF, lipid-based formulation
- LCT, long-chain triglyceride
- Lipid-based formulation
- Lipolysis
- MCT, medium-chain triglyceride
- Model
- Oral delivery
- PBPK, physiologically based pharmacokinetic
- PK, pharmacokinetic
- Perspectives
- SCT, short-chain triglyceride
- SEDDS, self-emulsifying drug delivery system
- SGF, simulated gastric fluid
- SIF, simulated intestinal fluid
- SLS, sodium lauryl sulfate
- SMEDDS, self-microemulsifying drug delivery system
- SNEDDS, self-nanoemulsifying drug delivery system
- TIM, TNO gastrointestinal model
- TNO, Netherlands Organization for Applied Scientific Research
- Tmax, time to reach the peak plasma concentration
Collapse
|
9
|
Xu Y, Shrestha N, Préat V, Beloqui A. An overview of in vitro, ex vivo and in vivo models for studying the transport of drugs across intestinal barriers. Adv Drug Deliv Rev 2021; 175:113795. [PMID: 33989702 DOI: 10.1016/j.addr.2021.05.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 05/05/2021] [Accepted: 05/07/2021] [Indexed: 12/13/2022]
Abstract
Oral administration is the most commonly used route for drug delivery owing to its cost-effectiveness, ease of administration, and high patient compliance. However, the absorption of orally delivered compounds is a complex process that greatly depends on the interplay between the characteristics of the drug/formulation and the gastrointestinal tract. In this contribution, we review the different preclinical models (in vitro, ex vivo and in vivo) from their development to application for studying the transport of drugs across intestinal barriers. This review also discusses the advantages and disadvantages of each model. Furthermore, the authors have reviewed the selection and validation of these models and how the limitations of the models can be addressed in future investigations. The correlation and predictability of the intestinal transport data from the preclinical models and human data are also explored. With the increasing popularity and prevalence of orally delivered drugs/formulations, sophisticated preclinical models with higher predictive capacity for absorption of oral formulations used in clinical studies will be needed.
Collapse
Affiliation(s)
- Yining Xu
- University of Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Avenue Mounier 73 B1.73.12, 1200 Brussels, Belgium.
| | - Neha Shrestha
- University of Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Avenue Mounier 73 B1.73.12, 1200 Brussels, Belgium.
| | - Véronique Préat
- University of Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Avenue Mounier 73 B1.73.12, 1200 Brussels, Belgium.
| | - Ana Beloqui
- University of Louvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, Avenue Mounier 73 B1.73.12, 1200 Brussels, Belgium.
| |
Collapse
|
10
|
Insights into the ameliorating ability of mesoporous silica in modulating drug release in ternary amorphous solid dispersion prepared by hot melt extrusion. Eur J Pharm Biopharm 2021; 165:244-258. [PMID: 34020023 DOI: 10.1016/j.ejpb.2021.04.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 11/23/2022]
Abstract
In this work, the application of various mesoporous silica grades in the preparation of stabilized ternary amorphous solid dispersions of Felodipine using hot melt extrusion was explored. We have demonstrated the effectiveness of mesoporous silica in these dispersions without the need for any organic solvents i.e., no pre-loading or immersion steps required. The physical and chemical properties, release profiles of the prepared formulations and the surface concentrations of the various molecular species were investigated in detail. Formulations containing 25 wt% and 50 wt% of Felodipine demonstrated enhanced stability and solubility of the drug substance compared to its crystalline counterpart. Based on the Higuchi model, ternary formulations exhibited a 2-step or 3-step release pattern which can be ascribed to the release of drug molecules from the organic polymer matrix and the external silica surface, followed by a release from the silica pore structure. According to the Korsmeyer-Peppas model, the release rate and release mechanism are governed by a complex quasi-Fickian release mechanism, in which multiple release mechanisms are occurring concurrently and consequently. Stability studies indicated that after 6 months storage of all formulation at 30% RH and 20 °C, Felodipine in all formulations remained stable in its amorphous state except for the formulation comprised of 40 wt% Syloid AL-1FP with a 50 wt% drug load.
Collapse
|
11
|
Analakkattillam S, Langsi VK, Hanrahan JP, Moore E. Comparative Study of Dissolution for Cannabidiol in EU and US Hemp Oil Products by HPLC. J Pharm Sci 2021; 110:3091-3098. [PMID: 33862070 DOI: 10.1016/j.xphs.2021.03.028] [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: 12/15/2020] [Revised: 03/04/2021] [Accepted: 03/18/2021] [Indexed: 01/11/2023]
Abstract
For the first time, a simple and robust HPLC method has been developed for dissolution studies for cannabidiol (CBD) in hemp oil products. An isocratic elution of samples performed on SOLAS™ C18 150 mm x 4.6 mm, 5 μm column with a mobile phase consisting of 75:25 acetonitrile-water v/v, delivered at a flow rate 1.5 mL/minutes to variable wavelength detector using 214 nm. An in-house validated assay test was executed for calculating the purity of hemp oil products and also for considering the dissolution medium to be used. For dissolution studies, equivalent of 5 mg and/or 10 mg of the active was introduced into 500 mL of simulated gastric and intestinal fluids separately, and dissolution was performed at 50 rpm using paddles for 180 min. Dissolution profiles for hemp oil products purchased from the United States and Europe were compared. Additionally, dissolution testing was conducted to study the effect of percentage CBD release on increased agitation speed of 75 and 100 rpm and also, on extended dissolution runtime of 240 min.
Collapse
Affiliation(s)
- S Analakkattillam
- Glantreo Limited, ERI Building, Lee Road, Cork City, Ireland; School of Chemistry, University College Cork, Cork, Ireland
| | - V K Langsi
- Glantreo Limited, ERI Building, Lee Road, Cork City, Ireland
| | - J P Hanrahan
- Glantreo Limited, ERI Building, Lee Road, Cork City, Ireland
| | - E Moore
- School of Chemistry, University College Cork, Cork, Ireland.
| |
Collapse
|
12
|
Hosseinpour S, Walsh LJ, Xu C. Biomedical application of mesoporous silica nanoparticles as delivery systems: a biological safety perspective. J Mater Chem B 2021; 8:9863-9876. [PMID: 33047764 DOI: 10.1039/d0tb01868f] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The application of mesoporous silica nanoparticles (MSNs) as drug delivery systems to deliver drugs, proteins, and genes has expanded considerably in recent years, using in vitro and animal studies. For future translation to clinical applications, the biological safety aspects of MSNs must be considered carefully. This paper reviews the biosafety of MSNs, examining key issues such as biocompatibility, effects on immune cells and erythrocytes, biodistribution, biodegradation and clearance, and how these vary depending on the effects of the physical and chemical properties of MSNs such as particle size, porosity, morphology, surface charge, and chemical modifications. The future use of MSNs as a delivery system must extend beyond what has been learnt thus far using rodent animal models to encompass larger animals.
Collapse
Affiliation(s)
- Sepanta Hosseinpour
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
| | - Laurence J Walsh
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
| | - Chun Xu
- School of Dentistry, The University of Queensland, Herston, QLD 4006, Australia.
| |
Collapse
|
13
|
Henze LJ, Koehl NJ, Bennett-Lenane H, Holm R, Grimm M, Schneider F, Weitschies W, Koziolek M, Griffin BT. Characterization of gastrointestinal transit and luminal conditions in pigs using a telemetric motility capsule. Eur J Pharm Sci 2021; 156:105627. [PMID: 33122007 DOI: 10.1016/j.ejps.2020.105627] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/14/2020] [Accepted: 10/23/2020] [Indexed: 01/27/2023]
Abstract
Within preclinical research, the pig has become an important model in regulatory toxicology and pharmacokinetics, to assess oral dosage forms and to compare different formulation strategies. In addition, there are emerging application of the pig model to asses clinical dosing conditions in the fasted and fed state. In this study, the gastrointestinal transit conditions in male landrace pigs were studied with a telemetric motility capsule under fasted and postprandial conditions. The whole gut transit time (WGTT) was determined by administering a SmartPill® capsule to four landrace pigs, under both fasted and fed state conditions in a cross-over study design. Overall, this study found that small intestinal transit in landrace pigs ranged from 2.3 - 4.0 h, and was broadly similar to reported human estimates and was not affected by the intake conditions. Gastric emptying was highly variable and prolonged in landrace pigs ranging from 20 - 233 h and up to 264 h in one specific case. Under dynamic conditions pigs have a low gastric pH comparable to humans, however a high variability under fasted conditions could be observed. The comparison of the data from this study with a recent similar study in beagle dogs revealed major differences between gastric maximum pressures observed in landrace pigs and dogs. In the porcine stomach maximum pressures of up to 402 mbar were observed, which are comparable to reported human data. Intestinal maximum pressures in landrace pigs were in the same range as in humans. Overall, the study provides new insights of gastrointestinal conditions in landrace pigs, which can lead to more accurate interpretation of in vivo results obtained of pharmacokinetic studies in preclinical models. While small intestinal transit conditions, GI pH and pressures were similar to humans, the prolonged gastric emptying observed in pigs need to be considered in assessing the suitability of the pig model for assessing in vivo performance of large non-disintegrated oral drug products.
Collapse
Affiliation(s)
- Laura J Henze
- School of Pharmacy, University College Cork; Cork, Ireland
| | - Niklas J Koehl
- School of Pharmacy, University College Cork; Cork, Ireland
| | | | - René Holm
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Turnhoutseweg 30, 2340 Beerse, Belgium; Department of Science and Environment, Roskilde University, Universitetsvej 1, DK-4000 Roskilde, Denmark
| | - Michael Grimm
- Department of Biopharmaceutics and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489 Greifswald, Germany
| | - Felix Schneider
- Department of Biopharmaceutics and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489 Greifswald, Germany
| | - Werner Weitschies
- Department of Biopharmaceutics and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489 Greifswald, Germany
| | - Mirko Koziolek
- Department of Biopharmaceutics and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489 Greifswald, Germany
| | | |
Collapse
|
14
|
Qu Z, Wong KY, Moniruzzaman M, Begun J, Santos HA, Hasnain SZ, Kumeria T, McGuckin MA, Popat A. One‐Pot Synthesis of pH‐Responsive Eudragit‐Mesoporous Silica Nanocomposites Enable Colonic Delivery of Glucocorticoids for the Treatment of Inflammatory Bowel Disease. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000165] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Zhi Qu
- School of Pharmacy The University of Queensland Brisbane QLD 4102 Australia
- Immunopathology Group Mater Research Institute –The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| | - Kuan Yau Wong
- Immunopathology Group Mater Research Institute –The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| | - Md. Moniruzzaman
- School of Pharmacy The University of Queensland Brisbane QLD 4102 Australia
- Inflammatory Bowel Disease Group, Mater Research Institute–The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| | - Jakob Begun
- Inflammatory Bowel Disease Group, Mater Research Institute–The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
- Mater Hospital Brisbane Mater Health Services South Brisbane QLD 4102 Australia
| | - Hélder A Santos
- Drug Research Program Division of Pharmaceutical Chemistry and Technology Faculty of Pharmacy University of Helsinki Helsinki FI‐00014 Finland
- Helsinki Institute of Life Science (HiLIFE) University of Helsinki Helsinki FI‐00014 Finland
| | - Sumaira Z. Hasnain
- School of Pharmacy The University of Queensland Brisbane QLD 4102 Australia
- Immunopathology Group Mater Research Institute –The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| | - Tushar Kumeria
- School of Pharmacy The University of Queensland Brisbane QLD 4102 Australia
- Immunopathology Group Mater Research Institute –The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| | - Michael A. McGuckin
- Faculty of Medicine Dentistry and Health Sciences the University of Melbourne Melbourne VIC 3010 Australia
| | - Amirali Popat
- School of Pharmacy The University of Queensland Brisbane QLD 4102 Australia
- Immunopathology Group Mater Research Institute –The University of Queensland Translational Research Institute Brisbane QLD 4102 Australia
| |
Collapse
|
15
|
Development and evaluation of a biorelevant medium simulating porcine gastrointestinal fluids. Eur J Pharm Biopharm 2020; 154:116-126. [DOI: 10.1016/j.ejpb.2020.06.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/08/2020] [Accepted: 06/14/2020] [Indexed: 12/23/2022]
|
16
|
Cheng X, Gao J, Li J, Cheng G, Zou M, Piao H. In Vitro-In Vivo Correlation for Solid Dispersion of a Poorly Water-Soluble Drug Efonidipine Hydrochloride. AAPS PharmSciTech 2020; 21:160. [PMID: 32476084 DOI: 10.1208/s12249-020-01685-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 04/11/2020] [Indexed: 12/11/2022] Open
Abstract
The aim of this present study was to investigate the ability of different dissolution methods to predict the in vivo performance of efonidipine hydrochloride (EFH). The solid dispersions of EFH were prepared by solvent evaporation method with HPMC-AS as matrix and urea as a pH adjusting agent. The paddle method, the open-loop, and the closed-loop flow-through cell methods were studied. In the study, Weibull's model was the best fit to explain release profiles. The pharmacokinetics behaviors of two kinds of solid dispersions with different release rate were investigated in comparison to the EFH after oral administration in rats. In vivo absorption was calculated by a numerical deconvolution method. In the study, the level A in vivo and in vitro correlation (IVIVC) was utilized. The correlation coefficient was calculated and interpreted by means of linear regression analysis (Origin.Pro.8.5 software). As a result, excellent IVIVC for solid dispersions and crude drug (r2 = 0.9352-0.9916) was obtained for the dissolution rate determined with flow-through cell open-loop system in phosphate buffer solution with 0.1% (w/v) polysorbate 80 at pH 6.5, the flow-rate of 4 mL/min. In addition, the self-assembled flow cell system had good repeatability and accuracy. The dissolution rate of the solid dispersion could be slowed down by the flow-through method, and the difference caused by preparation was significantly distinguished. The study demonstrated that flow-through cell method of the open-loop, compared with paddle method, was suitable for predicting in vivo performance of EFH solid dispersions.
Collapse
|
17
|
INFOGEST static in vitro simulation of gastrointestinal food digestion. Nat Protoc 2019; 14:991-1014. [PMID: 30886367 DOI: 10.1038/s41596-018-0119-1] [Citation(s) in RCA: 1662] [Impact Index Per Article: 332.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 12/20/2018] [Indexed: 01/23/2023]
Abstract
Developing a mechanistic understanding of the impact of food structure and composition on human health has increasingly involved simulating digestion in the upper gastrointestinal tract. These simulations have used a wide range of different conditions that often have very little physiological relevance, and this impedes the meaningful comparison of results. The standardized protocol presented here is based on an international consensus developed by the COST INFOGEST network. The method is designed to be used with standard laboratory equipment and requires limited experience to encourage a wide range of researchers to adopt it. It is a static digestion method that uses constant ratios of meal to digestive fluids and a constant pH for each step of digestion. This makes the method simple to use but not suitable for simulating digestion kinetics. Using this method, food samples are subjected to sequential oral, gastric and intestinal digestion while parameters such as electrolytes, enzymes, bile, dilution, pH and time of digestion are based on available physiological data. This amended and improved digestion method (INFOGEST 2.0) avoids challenges associated with the original method, such as the inclusion of the oral phase and the use of gastric lipase. The method can be used to assess the endpoints resulting from digestion of foods by analyzing the digestion products (e.g., peptides/amino acids, fatty acids, simple sugars) and evaluating the release of micronutrients from the food matrix. The whole protocol can be completed in ~7 d, including ~5 d required for the determination of enzyme activities.
Collapse
|
18
|
Meka AK, Jenkins LJ, Dàvalos-Salas M, Pujara N, Wong KY, Kumeria T, Mariadason JM, Popat A. Enhanced Solubility, Permeability and Anticancer Activity of Vorinostat Using Tailored Mesoporous Silica Nanoparticles. Pharmaceutics 2018; 10:E283. [PMID: 30562958 PMCID: PMC6321298 DOI: 10.3390/pharmaceutics10040283] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/07/2018] [Accepted: 12/10/2018] [Indexed: 11/21/2022] Open
Abstract
Suberoylanilide hydroxamic acid (SAHA) or vorinostat (VOR) is a potent inhibitor of class I histone deacetylases (HDACs) that is approved for the treatment of cutaneous T-cell lymphoma. However, it has the intrinsic limitations of low water solubility and low permeability which reduces its clinical potential especially when given orally. Packaging of drugs within ordered mesoporous silica nanoparticles (MSNs) is an emerging strategy for increasing drug solubility and permeability of BCS (Biopharmaceutical Classification System) class II and IV drugs. In this study, we encapsulated vorinostat within MSNs modified with different functional groups, and assessed its solubility, permeability and anti-cancer efficacy in vitro. Compared to free drug, the solubility of vorinostat was enhanced 2.6-fold upon encapsulation in pristine MSNs (MCM-41-VOR). Solubility was further enhanced when MSNs were modified with silanes having amino (3.9 fold) or phosphonate (4.3 fold) terminal functional groups. Moreover, permeability of vorinostat into Caco-2 human colon cancer cells was significantly enhanced for MSN-based formulations, particularly MSNs modified with amino functional group (MCM-41-NH₂-VOR) where it was enhanced ~4 fold. Compared to free drug, vorinostat encapsulated within amino-modified MSNs robustly induced histone hyperacetylation and expression of established histone deacetylase inhibitor (HDACi)-target genes, and induced extensive apoptosis in HCT116 colon cancer cells. Similar effects were observed on apoptosis induction in HH cutaneous T-cell lymphoma cells. Thus, encapsulation of the BCS class IV molecule vorinostat within MSNs represents an effective strategy for improving its solubility, permeability and anti-tumour activity.
Collapse
Affiliation(s)
- Anand Kumar Meka
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
| | - Laura J Jenkins
- Olivia Newton-John Cancer Research Institute, La Trobe University School of Cancer Medicine, Melbourne, VIC 3084, Australia.
| | - Mercedes Dàvalos-Salas
- Olivia Newton-John Cancer Research Institute, La Trobe University School of Cancer Medicine, Melbourne, VIC 3084, Australia.
| | - Naisarg Pujara
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
| | - Kuan Yau Wong
- Mater Research Institute-The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia.
| | - Tushar Kumeria
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
- Mater Research Institute-The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia.
| | - John M Mariadason
- Olivia Newton-John Cancer Research Institute, La Trobe University School of Cancer Medicine, Melbourne, VIC 3084, Australia.
| | - Amirali Popat
- School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
- Mater Research Institute-The University of Queensland, Translational Research Institute, Woolloongabba, QLD 4102, Australia.
| |
Collapse
|
19
|
Bremmell KE, Prestidge CA. Enhancing oral bioavailability of poorly soluble drugs with mesoporous silica based systems: opportunities and challenges. Drug Dev Ind Pharm 2018; 45:349-358. [PMID: 30411991 DOI: 10.1080/03639045.2018.1542709] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Porous silica-based drug delivery systems have shown considerable promise for improving the oral delivery of poorly water-soluble drugs. More specifically, micro- and meso-porous silica carriers have high surface areas with associated ability to physically adsorb high-drug loads in a molecular or amorphous form; this allows molecular state drug release in aqueous gastrointestinal environments, potential for supersaturation, and hence facilitates enhanced absorption and increased bioavailability. This review focuses primarily on the ability of porous silica materials to modulate in vitro drug release and enhance in vivo biopharmaceutical performance. The key considerations identified and addressed are the physicochemical properties of the porous silica materials (e.g. the particle and pore size, shape, and surface chemistry), drug specific properties (e.g. pKa, solubility, and nature of interactions with the silica carrier), potential for both immediate and controlled release, drug release mechanisms, potential for surface functionalization and inclusion of precipitation inhibitors, and importance of utilizing relevant and effective in vitro dissolution methods with discriminating dissolution media that provides guidance for in vivo outcomes (i.e. IVIVC).
Collapse
Affiliation(s)
- Kristen E Bremmell
- a School of Pharmacy and Medical Sciences , University of South Australia , Adelaide , Australia
| | - Clive A Prestidge
- a School of Pharmacy and Medical Sciences , University of South Australia , Adelaide , Australia.,b ARC Centre of Excellence in Convergent Bio-Nano Science and Technology , University of South Australia , South Australia , Australia
| |
Collapse
|
20
|
Hamed R, Kamal A. Concentration Profiles of Carvedilol: A Comparison Between In Vitro Transfer Model and Dissolution Testing. J Pharm Innov 2018. [DOI: 10.1007/s12247-018-9337-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
21
|
Henze LJ, Koehl NJ, O'Shea JP, Kostewicz ES, Holm R, Griffin BT. The pig as a preclinical model for predicting oral bioavailability and in vivo performance of pharmaceutical oral dosage forms: a PEARRL review. ACTA ACUST UNITED AC 2018; 71:581-602. [PMID: 29635685 DOI: 10.1111/jphp.12912] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 03/03/2018] [Indexed: 12/21/2022]
Abstract
OBJECTIVES In pharmaceutical drug development, preclinical tests in animal models are essential to demonstrate whether the new drug is orally bioavailable and to gain a first insight into in vivo pharmacokinetic parameters that can subsequently be used to predict human values. Despite significant advances in the development of bio-predictive in vitro models and increasing ethical expectations for reducing the number of animals used for research purposes, there is still a need for appropriately selected pre-clinical in vivo testing to provide guidance on the decision to progress to testing in humans. The selection of the appropriate animal models is essential both to maximise the learning that can be obtained from such experiments and to avoid unnecessary testing in a range of species. KEY FINDINGS The present review, provides an insight into the suitability of the pig model for predicting oral bioavailability in humans, by comparing the conditions in the GIT. It also contains a comparison between the bioavailability of compounds dosed to both humans and pigs, to provide an insight into the relative correlation and examples on why a lack of correlation may be observed. SUMMARY While there is a general trend towards predicting human bioavailability from pig data, there is considerable variability in the data set, most likely reflecting species specific differences in individual drug metabolism. Nonetheless, the correlation between pigs vs. humans was comparable to that reported for dogs vs. humans. The presented data demonstrate the suitability of the pig as a preclinical model to predict bioavailability in human.
Collapse
Affiliation(s)
- Laura J Henze
- School of Pharmacy, University College Cork, Cork, Ireland
| | - Niklas J Koehl
- School of Pharmacy, University College Cork, Cork, Ireland
| | | | - Edmund S Kostewicz
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | - René Holm
- Drug Product Development, Janssen Research and Development, Johnson & Johnson, Beerse, Belgium
| | | |
Collapse
|
22
|
Yin YF, Guo Y, Song WD, Duan XC, Zheng XC, Zhong T, Zhang S, Yao X, Xu MQ, Zhang Q, Zhang X. Improving Solubility and Oral Bioavailability of Febuxostat by Polymer-Coated Nanomatrix. AAPS PharmSciTech 2018; 19:934-940. [PMID: 29079988 DOI: 10.1208/s12249-017-0905-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/08/2017] [Indexed: 11/30/2022] Open
Abstract
Here, the mesoporous silica (Sylysia 350) was selected as mesoporous material, hydroxypropyl methylcellulose (HPMC) was selected as crystallization inhibitor, and febuxostat (FBT) was selected as model drug, respectively. The FBT-Sylysia-HPMC nanomatrix (FBT@SHN) was prepared. The characteristics of FBT@SHN were investigated in vitro and in vivo. Our results indicated that the FBT in FBT@SHN was in amorphous form. The solubility and dissolution of FBT in FBT@SHN were significantly increased. The oral bioavailability of FBT in FBT@SHN was greatly improved 5.8-fold compared with that in FBT suspension. This nanomatrix could be used as a drug delivery platform for improving the oral bioavailability.
Collapse
|
23
|
Enhancing the dissolution of phenylbutazone using Syloid® based mesoporous silicas for oral equine applications. J Pharm Anal 2018; 8:181-186. [PMID: 29922487 PMCID: PMC6004617 DOI: 10.1016/j.jpha.2018.01.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 12/21/2022] Open
Abstract
Three mesoporous silica excipients (Syloid® silicas AL-1 FP, XDP 3050 and XDP 3150) were formulated with a model drug known for its poor aqueous solubility, namely phenylbutazone, in an attempt to enhance the extent and rate of drug dissolution. Although other forms of mesoporous silica have been investigated in previous studies, the effect of inclusion with these specific Syloid® silica based excipients and more interestingly, with phenylbutazone, is unknown. This work reports a significant enhancement for both the extent and rate of drug release for all three forms of Syloid® silica at a 1:1 drug:silica ratio over a period of 30 min. An explanation for this increase was determined to be conversion to the amorphous form and an enhanced drug loading ability within the pores. Differences between the release profiles of the three silicas were concluded to be a consequence of the physicochemical differences between the three forms. Overall, this study confirms that Syloid® silica based excipients can be used to enhance dissolution, and potentially therefore bioavailability, for compounds with poor aqueous solubility such as phenylbutazone. In addition, it has been confirmed that drug release can be carefully tailored based on the choice of Syloid® silica and desired release profile.
Collapse
|
24
|
McCarthy CA, Ahern RJ, Devine KJ, Crean AM. Role of Drug Adsorption onto the Silica Surface in Drug Release from Mesoporous Silica Systems. Mol Pharm 2017; 15:141-149. [PMID: 29219325 DOI: 10.1021/acs.molpharmaceut.7b00778] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Factors contributing to incomplete drug release from a number of mesoporous silica formulations are not well understood. This study aims to address this gap in knowledge by exploring the role of drug adsorption onto silica substrates during the drug release process in dissolution media. Adsorption isotherms were generated to understand drug adsorption behavior onto the silica surface. Two silica materials were selected (SBA-15 (mesoporous) and Aerosil 200 (nonporous)) to investigate the influence of porous architecture on the adsorption/dissolution processes. The ability of the dissolution medium to wet the silica surface, particularly the porous network, was investigated by the addition of a surfactant to the dissolution medium. The results demonstrated that a larger amount of drug was bound/m2 to the nonporous surface than to the mesoporous material. Adsorption isotherms proved useful in understanding drug adsorption/release behavior for the nonporous silica formulation. However, the quantity of drug remaining on the mesoporous silica surface after dissolution was significantly higher than the amount predicted using adsorption isotherm data. These results suggest that a fraction of loaded drug molecules were tightly bound to the silica surface or attached to sites which are inaccessible for the dissolution media. The presence of surfactant, sodium dodecyl sulfate, in the media enhanced drug release from the silica surface. This behavior can be attributed to both the improved wetting characteristics of the media and adsorption of the surfactant to the silica surface. The findings of this study reinforce the significance of the role that silica porous architecture plays in the dissolution process and indicates that accessible surface area is an important parameter to consider for mesoporous systems in relation to drug release.
Collapse
Affiliation(s)
- Carol A McCarthy
- Synthesis and Solid State Pharmaceutical Centre (SSPC), School of Pharmacy, University College Cork , Cork, Ireland
| | - Robert J Ahern
- Synthesis and Solid State Pharmaceutical Centre (SSPC), School of Pharmacy, University College Cork , Cork, Ireland
| | - Ken J Devine
- School of Pharmacy, University College Cork , Cork, Ireland
| | - Abina M Crean
- Synthesis and Solid State Pharmaceutical Centre (SSPC), School of Pharmacy, University College Cork , Cork, Ireland
| |
Collapse
|
25
|
Zheng N, Li J, Xu C, Xu L, Li S, Xu L. Mesoporous silica nanorods for improved oral drug absorption. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:1132-1140. [PMID: 28783976 DOI: 10.1080/21691401.2017.1362414] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Mesoporous silica nanoparticles (MSNs) have been widely used in biomedical applications. However, most studies have been limited to spherical MSNs, while non-spherical MSNs have never been rigorously studied. In this study, we fabricated mesoporous silica nanospheres (MSNSs) and mesoporous silica nanorods (MSNRs), with different aspect ratios (ARs) but identical surface chemistries to explore the shape effects of MSNs on oral delivery. The results of cellular studies demonstrated that MSNRs exhibited a higher cellular uptake than MSNSs. Mechanistic studies showed that caveolae-mediated endocytosis was involved in the uptake of MSNRs, while the clathrin-dependent pathway contributed to the endocytosis of MSNSs. Meanwhile, the apparent permeability coefficient value (Papp) of doxorubicin hydrochloride (Dox)-loaded MSNRs was approximately 1.8-, 3.2- and 6.3-fold higher than that of Dox-loaded MSNS1, Dox-loaded MSNS2 and Dox solution, respectively. The in vivo pharmacokinetics study showed that the area under the plasma concentration-time curve (AUC) achieved by Dox-loaded MSNRs was 1.9-, 3.4- and 5.7-fold higher than the corresponding values for Dox-loaded MSNS1, MSNS2 and Dox solution, respectively. Taken together, our results demonstrated that tuning nanoparticle shape potentially determines the biological fate of nanoparticles with higher delivery efficiency, such as enhanced cellular uptake and oral bioavailability.
Collapse
Affiliation(s)
- Nan Zheng
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Jing Li
- b Wuya College of Innovation , Shenyang Pharmaceutical University , Shenyang , China
| | - Cheng Xu
- c School of Life Science & Biopharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Lishi Xu
- c School of Life Science & Biopharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Sanming Li
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| | - Lu Xu
- a School of Pharmacy , Shenyang Pharmaceutical University , Shenyang , China
| |
Collapse
|
26
|
O'Shea JP, Nagarsekar K, Wieber A, Witt V, Herbert E, O'Driscoll CM, Saal C, Lubda D, Griffin BT, Dressman JB. Mesoporous silica-based dosage forms improve bioavailability of poorly soluble drugs in pigs: case example fenofibrate. J Pharm Pharmacol 2017. [DOI: 10.1111/jphp.12767] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Abstract
Objectives
Mesoporous silicas (SLC) have demonstrated considerable potential to improve bioavailability of poorly soluble drugs by facilitating rapid dissolution and generating supersaturation. The addition of certain polymers can further enhance the dissolution of these formulations by preventing drug precipitation. This study uses fenofibrate as a model drug to investigate the performance of an SLC-based formulation, delivered with hydroxypropyl methylcellulose acetate succinate (HPMCAS) as a precipitation inhibitor, in pigs. The ability of biorelevant dissolution testing to predict the in vivo performance was also assessed.
Key findings
Fenofibrate-loaded mesoporous silica (FF-SLC), together with HPMCAS, displayed significant improvements in biorelevant dissolution tests relative to a reference formulation consisting of a physical mixture of crystalline fenofibrate with HPMCAS. In vivo assessment in fasted pigs demonstrated bioavailabilities of 86.69 ± 35.37% with combination of FF-SLC and HPMCAS in capsule form and 75.47 ± 14.58% as a suspension, compared to 19.92 ± 9.89% with the reference formulation. A positive correlation was identified between bioavailability and dissolution efficiency.
Conclusions
The substantial improvements in bioavailability of fenofibrate from the SLC-based formulations confirm the ability of this formulation strategy to overcome the dissolution and solubility limitations, further raising the prospects of a future commercially available SLC-based formulation.
Collapse
Affiliation(s)
- Joseph P O'Shea
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, Ireland
| | - Kalpa Nagarsekar
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | - Alena Wieber
- Actives & Formulation Research and Development, MilliporeSigma, a Business of Merck KGaA, Darmstadt, Germany
| | - Vanessa Witt
- Actives & Formulation Research and Development, MilliporeSigma, a Business of Merck KGaA, Darmstadt, Germany
| | - Elisabeth Herbert
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| | | | | | - Dieter Lubda
- Actives & Formulation Research and Development, MilliporeSigma, a Business of Merck KGaA, Darmstadt, Germany
| | - Brendan T Griffin
- Pharmacodelivery Group, School of Pharmacy, University College Cork, Cork, Ireland
| | - Jennifer B Dressman
- Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany
| |
Collapse
|