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Gupta N, Sharma PK, Yadav SS, Chauhan M, Datusalia AK, Saha S. Tricompartmental Microcarriers with Controlled Release for Efficient Management of Parkinson's Disease. ACS Biomater Sci Eng 2024; 10:5039-5056. [PMID: 38978474 DOI: 10.1021/acsbiomaterials.4c01042] [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] [Indexed: 07/10/2024]
Abstract
Parkinson's is a progressive neurodegenerative disease of the nervous system. It has no cure, but its symptoms can be managed by supplying dopamine artificially to the brain.This work aims to engineer tricompartmental polymeric microcarriers by electrohydrodynamic cojetting technique to encapsulate three PD (Parkinson's disease) drugs incorporated with high encapsulation efficiency (∼100%) in a single carrier at a fixed drug ratio of 4:1:8 (Levodopa (LD): Carbidopa(CD): Entacapone (ENT)). Upon oral administration, the drug ratio needs to be maintained during subsequent release from microparticles to enhance the bioavailability of primary drug LD. This presents a notable challenge, as the three drugs vary in their aqueous solubility (LD > CD > ENT). The equilibrium of therapeutic release was achieved using a combination of FDA-approved polymers (PLA, PLGA, PCL, and PEG) and the disc shape of particles. In vitro studies demonstrated the simultaneous release of all the three therapeutics in a sustained and controlled manner. Additionally, pharmacodynamics and pharmacokinetics studies in Parkinson's disease rats induced by rotenone showed a remarkable improvement in PD conditions for the microparticles-fed rats, thereby showing a great promise toward efficient management of PD.
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Affiliation(s)
- Nidhi Gupta
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, Hauz Khas 110016, India
- Department of Applied Chemistry, National Yang-Ming Chiao Tung University, Hsinchu 30010, Taiwan
- International College of Semiconductor Technology, National Yang-Ming Chiao Tung University, Hsinchu 30010, Taiwan
| | - Pankaj Kumar Sharma
- Delhi Institute of Pharmaceutical Science and Research, Delhi Pharmaceutical Sciences and Research University, Pushp Vihar S3, New Delhi 110017, India
| | - Shreyash Santosh Yadav
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Raebareli, Uttar Pradesh 226002, India
| | - Meenakshi Chauhan
- Delhi Institute of Pharmaceutical Science and Research, Delhi Pharmaceutical Sciences and Research University, Pushp Vihar S3, New Delhi 110017, India
| | - Ashok Kumar Datusalia
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Raebareli, Uttar Pradesh 226002, India
| | - Sampa Saha
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi, Hauz Khas 110016, India
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Onder H, Comoglu S. Controlled-Release Levodopa for the Treatment of Rapid Motor Fluctuations in Parkinson's Disease Subjects with Subthalamic Nucleus Deep Brain Stimulation. Asian J Neurosurg 2023; 18:321-326. [PMID: 37397033 PMCID: PMC10310439 DOI: 10.1055/s-0043-1769757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023] Open
Abstract
Objectives We aimed to investigate the efficiency of controlled-release levodopa/benserazide (Madopar HBS) use during daytime in our pilot study on advanced-stage Parkinson's disease (PD) subjects with deep brain stimulation of the subthalamic nucleus (STN-DBS) therapy. Methods We have evaluated all PD subjects with STN-DBS who had admitted to our outpatient polyclinic between February 2022 and March 2022. Among these patients, those who were taking levodopa therapy at least five times throughout the day and the efficiency of levodopa lasted less than 3 hours were detected. The standard levodopa therapy was switched to Madopar HBS in all patients who accepted the therapy chance and the clinical evaluation of the patients on Madopar HBS therapy was performed in the second month of the therapy. Results Ultimately, the follow-up of all four patients in whom the levodopa therapy was changed to Madopar HBS yielded a significant reduction in the "off" periods and improvement in the PSQ-39 scores. Conclusion We suggest the use of Madopar HBS in PD patients with STN-DBS surgery suffering from motor fluctuations, particularly in the subgroup with milder dyskinesias. Future study results of a large number of PD subjects with STN-DBS therapy are warranted to confirm our observations. The results of these studies may provide critical applications in clinical practice.
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Affiliation(s)
- Halil Onder
- Neurology Clinic, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
| | - Selcuk Comoglu
- Neurology Clinic, Diskapi Yildirim Beyazit Training and Research Hospital, Ankara, Turkey
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Hu Q, Hu F, Xu D, Zhang K. Numerical Analysis of Droplet Impacting on an Immiscible Liquid via Three-Phase Field Method. MICROMACHINES 2023; 14:mi14050951. [PMID: 37241573 DOI: 10.3390/mi14050951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/15/2023] [Accepted: 04/23/2023] [Indexed: 05/28/2023]
Abstract
In this work, we establish a two-dimensional axisymmetric simulation model to numerically study the impacting behaviors between oil droplets and an immiscible aqueous solution based on the three-phase field method. The numerical model is established by using the commercial software of COMSOL Multiphysics first and then validated by comparing the numerical results with the previous experimental study. The simulation results show that under the impact of oil droplets, a crater will form on the surface of the aqueous solution, which firstly expands and then collapses with the transfer and dissipation of kinetic energy of this three-phase system. As for the droplet, it flattens, spreads, stretches, or immerses on the crater surface and finally achieves an equilibrium state at the gas-liquid interface after experiencing several sinking-bouncing circles. The impacting velocity, fluid density, viscosity, interfacial tension, droplet size, and the property of non-Newtonian fluids all play important roles in the impact between oil droplets and aqueous solution. The conclusions can help to cognize the mechanism of droplet impact on an immiscible fluid and provide useful guidelines for those applications concerning droplet impact.
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Affiliation(s)
- Qingming Hu
- School of Mechtranoics Engineering, Qiqihar University, Qiqihaer 161006, China
- The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar University, Qiqihaer 161006, China
- The Collaborative Innovation Center for Intelligent Manufacturing Equipment Industrialization, Qiqihar University, Qiqihaer 161006, China
| | - Fengshi Hu
- School of Mechtranoics Engineering, Qiqihar University, Qiqihaer 161006, China
| | - Donghui Xu
- School of Mechtranoics Engineering, Qiqihar University, Qiqihaer 161006, China
| | - Kailiang Zhang
- College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, China
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Taleb SAA, Ismail SA, Mohamed M, Mourad RM, El-Hashemy HA. Promising Synthesized Bis (arylmethylidene) acetone -Polymeric PCL Emulsified Nanoparticles with Enhanced Antimicrobial/Antioxidant Efficacy: In-Vitro and In-Vivo Evaluation. OPENNANO 2023. [DOI: 10.1016/j.onano.2023.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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5
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Gorji M, Zarbaf D, Mazinani S, Noushabadi AS, Cella MA, Sadeghianmaryan A, Ahmadi A. Multi-responsive on-demand drug delivery PMMA- co-PDEAEMA platform based on CO 2, electric potential, and pH switchable nanofibrous membranes. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2023; 34:351-371. [PMID: 36063005 DOI: 10.1080/09205063.2022.2121591] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This study investigated the release characteristics of curcumin (CUR)-loaded switchable poly(methyl methacrylate)-co-poly(N,N-diethylaminoethyl methacrylate) (PMMA-co-PDEAEMA) membranes following the application of various stimuli, as well as the platform's applicability in wound dressing and tissue engineering applications. The free-radical polymerization method was used to synthesize the PMMA-co-PDEAEMA copolymer. The drug-loaded nanofibrous membrane with electric potential (EP)-, CO2-, and pH-responsive properties was developed by the electrospinning of PMMA-co-PDEAEMA and CUR. The resulted structure was characterized by a scanning electron microscope (SEM) coupled with X-ray energy dispersive spectroscopy and wide-angle X-ray scattering measurements. The release characteristics of the CUR-loaded wound covering were analyzed in various simulated environments at varying voltages, alternated CO2/N2 gas bubbling, and at two different pH values; the results demonstrated high drug release controllability. Loaded CUR displayed high stability and better solubility compared with free CUR. The CUR-loaded tissue also exhibited high antibacterial activity against Escherichia coli and staphylococcus aureus bacteria. In addition, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay depicted high biocompatibility of up to 95% in the CUR-loaded membrane. This platform could be a promising candidate for usage in tissue engineering and medical applications such as targeted drug delivery, biodetection, reversible cell capture-and-release systems, and biosensors.
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Affiliation(s)
- Mohsen Gorji
- New Technologies Research Center (NTRC), Amirkabir University of Technology, 15875-4413 Tehran, Iran
| | - Dara Zarbaf
- Department of Textile Engineering, Islamic Azad University, South Tehran Branch, Tehran, Iran
| | - Saeedeh Mazinani
- New Technologies Research Center (NTRC), Amirkabir University of Technology, 15875-4413 Tehran, Iran
| | - Abolfazl Sajadi Noushabadi
- Department of Chemical Engineering, Faculty of Engineering, University of Kashan, Kashan, Iran.,Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Monica A Cella
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada
| | - Ali Sadeghianmaryan
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada.,Department of Biomedical Engineering, University of Memphis, Memphis, Tennessee, USA
| | - Ali Ahmadi
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Canada.,Department of Mechanical Engineering, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, QC H3C 1K3, Canada
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Flexible on-chip droplet generation, switching and splitting via controllable hydrodynamics. Anal Chim Acta 2022; 1229:340363. [PMID: 36156234 DOI: 10.1016/j.aca.2022.340363] [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: 06/29/2022] [Revised: 08/27/2022] [Accepted: 09/03/2022] [Indexed: 11/23/2022]
Abstract
Flexible droplet preparation and manipulation are significant for lots applications such as immunoreaction and monocellular culture. Herein, we present a novel method for effective on-chip droplet generation, splitting and switching via controllable hydrodynamics. The microchannel of the designed chip has 6 inlets and 3 three outlets. The water solution is injected from a specific inlet (inlet d), and the other 5 inlets are used to inject oil fluids. Under the shearing effect of immiscible oils, the water phase breaks into dispersed droplets first, and the generated droplets can be further split into daughter drops or switched into side outlets from the middle outlet. To investigate the hydrodynamic droplet manipulation behaviors, a two-dimensional simulation model based on phase-field method is established. Utilizing the computational model, we systematically analyze the influences of the flow rates of continuous and dispersed fluids and the manipulation modes on droplet generation, splitting and switching. The numerical results indicate that the droplets can be generated with controlled sizes. For instance, at Qd = 5 μL/min and Qc1,2 = 5 μL/min, the droplet diameter decreases from 89.2 μm to 49.2 μm as Qs1,2 gradually rises from 15 μL/min to 40 μL/min. Moreover, the prepared droplets can realize on-demand splitting and switching. When Qd, Qc1,2, and Qs1,2 are fixed at 5 μL/min, 5 μL/min and 25 μL/min, respectively, the generated droplet is split into different proportional daughter drops with the rising of Qs3 (or Qs4) at first, and finally it is switched into the side-outlets when Qs3 (or Qs4) is higher than 80 μL/min. Therefore, this proposed droplet manipulation approach will be promising for various applications, and the numerical simulations can provide useful guidelines on the design and operation of droplet-based microfluidic systems.
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Ryu S, Jin M, Lee HK, Wang MH, Baek JS, Cho CW. Effects of lipid nanoparticles on physicochemical properties, cellular uptake, and lymphatic uptake of 6-methoxflavone. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2022. [DOI: 10.1007/s40005-021-00557-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Yu H, Xue C, Qin Y, Wen Y, Zhang L, Li Y. Preparation and performance of green targeted microcapsules encapsulating surfactants. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Wook Huh H, Na YG, Kang H, Kim M, Han M, Mai Anh Pham T, Lee H, Baek JS, Lee HK, Cho CW. Novel self-floating tablet for enhanced oral bioavailability of metformin based on cellulose. Int J Pharm 2021; 592:120113. [PMID: 33246050 DOI: 10.1016/j.ijpharm.2020.120113] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/02/2020] [Accepted: 11/20/2020] [Indexed: 12/25/2022]
Abstract
Metformin has several problems such as low bioavailability, short half-life, and narrow absorption window, sustained and site-specific drug delivery system is required. Floating drug delivery systems are very useful to achieve these purposes. However, conventional floating systems have several limitations; lag time, a high proportion of excipient in the tablet, using non-biocompatible excipient, and requirement of a complicated procedure. To overcome these obstacles, we developed a hollow-core floating tablet (HCFT). The HCFT immediately floated in pH 1.2, 4.0, 6.8 medium, and even distilled water. The floating duration time of HCFT was>24 h. From the in vitro release study, it was confirmed that HCFT showed the sustain release profile of metformin for 12 h. Water uptake and matrix erosion were evaluated for predicting the buoyancy and drug release kinetics of HCFT in the body. Factor analysis was applied to optimize the formulation. There were significant (p < 0.05) differences in metformin plasma concentration of 4 h and 6 h between two groups. Compared with Glucophage® XR, the relative bioavailability of metformin HCFT was 123.81 ± 3.52%. The X-ray imaging of optimized formulation revealed that HCFT was constantly floating in the stomach region of the rabbit, thereby indicating improved gastric retention for>6 h. Consequently, all the findings indicate that HCFT could be an effective gastric retention system and applied extensively to other drugs with narrow absorption windows.
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Affiliation(s)
- Hyun Wook Huh
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Young-Guk Na
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - HeeChol Kang
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Minki Kim
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Mingu Han
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Thi Mai Anh Pham
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Hyeonmin Lee
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Jong-Suep Baek
- Department of Bio-Health Convergence, Kangwon National Univerisity, Chucheon, Gangwon-do 25949, Republic of Korea.
| | - Hong-Ki Lee
- Animal Model Research Group, Jeonbuk Branch, Korea Institute of Toxicology (KIT), Jeongeup, Jeollabuk-do 53212, Republic of Korea.
| | - Cheong-Weon Cho
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea.
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Popov AL, Popova N, Gould DJ, Shcherbakov AB, Sukhorukov GB, Ivanov VK. Ceria Nanoparticles-Decorated Microcapsules as a Smart Drug Delivery/Protective System: Protection of Encapsulated P. pyralis Luciferase. ACS APPLIED MATERIALS & INTERFACES 2018; 10:14367-14377. [PMID: 29633830 DOI: 10.1021/acsami.7b19658] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The design of novel, effective drug delivery systems is one of the most promising ways to improve the treatment of socially important diseases. This article reports on an innovative approach to the production of composite microcontainers (microcapsules) bearing advanced protective functions. Cerium oxide (CeO2) nanoparticles were incorporated into layer-by-layer polyelectrolyte microcapsules as a protective shell for an encapsulated enzyme (luciferase of Photinus pyralis), preventing its oxidation by hydrogen peroxide, the most abundant type of reactive oxygen species (ROS). The protective effect depends on CeO2 loading in the shell: at a low concentration, CeO2 nanoparticles only scavenge ROS, whereas a higher content leads to a decrease in access for both ROS and the substrate to the enzyme in the core. By varying the nanoparticle concentration in the microcapsule, it is possible to control the level of core shielding, from ROS filtering to complete blocking. A comprehensive analysis of microcapsules by transmission electron microscopy, scanning electron microscopy, atomic force microscopy, confocal laser scanning microscopy, and energy-dispersive X-ray spectroscopy techniques was carried out. Composite microcapsules decorated with CeO2 nanoparticles and encapsulated luciferase were shown to be easily taken up by rat B-50 neuronal cells; they are nontoxic and are able to protect cells from the oxidative stress induced by hydrogen peroxide. The approach demonstrated that the active protection of microencapsulated substances by CeO2 nanoparticles can be used in the development of new drug delivery and diagnostic systems.
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Affiliation(s)
- Anton L Popov
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
| | - Nelli Popova
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
| | - David J Gould
- William Harvey Research Institute , Queen Mary University of London , London EC1M 6BQ , U.K
| | - Alexander B Shcherbakov
- Zabolotny Institute of Microbiology and Virology , National Academy of Sciences of Ukraine , Kyiv D0368 , Ukraine
| | - Gleb B Sukhorukov
- Institute of Theoretical and Experimental Biophysics , Russian Academy of Sciences , Pushchino, Moscow region 142290 , Russia
- School of Engineering & Materials Science , Queen Mary University of London , London E1 4NS , U.K
| | - Vladimir K Ivanov
- Kurnakov Institute of General and Inorganic Chemistry , Russian Academy of Sciences , Moscow 119991 , Russia
- National Research Tomsk State University , Tomsk 634050 , Russia
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Baek JS, Tee JK, Pang YY, Tan EY, Lim KL, Ho HK, Loo SCJ. Improved Bioavailability of Levodopa Using Floatable Spray-Coated Microcapsules for the Management of Parkinson's Disease. Neuromolecular Med 2018; 20:262-270. [PMID: 29696585 DOI: 10.1007/s12017-018-8491-0] [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: 03/09/2018] [Accepted: 04/23/2018] [Indexed: 12/14/2022]
Abstract
Oral administration of levodopa (LD) is the gold standard in managing Parkinson's disease (PD). Although LD is the most effective drug in treating PD, chronic administration of LD induces levodopa-induced dyskinesia. A continuous and sustained provision of LD to the brain could, therefore, reduce peak-dose dyskinesia. In commercial oral formulations, LD is co-administrated with an AADC inhibitor (carbidopa) and a COMT inhibitor (entacapone) to enhance its bioavailability. Nevertheless, patients are known to take up to five tablets a day because of poor sustained-releasing capabilities that lead to fluctuations in plasma concentrations. To achieve a prolonged release of LD with the aim of improving its bioavailability, floatable spray-coated microcapsules containing all three PD drugs were developed. This gastro-retentive delivery system showed sustained release of all PD drugs, at similar release kinetics. Pharmacokinetics study was conducted and this newly developed formulation showed a more plateaued delivery of LD that is void of the plasma concentration fluctuations observed for the control (commercial formulation). At the same time, measurements of LD and dopamine of mice administered with this formulation showed enhanced bioavailability of LD. This study highlights a floatable, sustained-releasing delivery system in achieving improved pharmacokinetics data compared to a commercial formulation.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jie Kai Tee
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
| | - Yi Yun Pang
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
| | - Ern Yu Tan
- General Surgery Clinic, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore
| | - Kah Leong Lim
- National Neuroscience Institute (NNI), 11 Jalan Tan Tock Seng, Singapore, 308433, Singapore
| | - Han Kiat Ho
- Department of Pharmacy, Faculty of Science, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore. .,Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore, 637551, Singapore.
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Functionalization of Cotton Fabrics with Polycaprolactone Nanoparticles for Transdermal Release of Melatonin. J Funct Biomater 2017; 9:jfb9010001. [PMID: 29295545 PMCID: PMC5872087 DOI: 10.3390/jfb9010001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/15/2017] [Accepted: 12/21/2017] [Indexed: 12/18/2022] Open
Abstract
Drug delivery by means of transdermal patches raised great interest as a non-invasive and sustained therapy. The present research aimed to design a patch for transdermal delivery of melatonin, which was encapsulated in polycaprolactone (PCL) nanoparticles (NPs) by employing flash nanoprecipitation (FNP) technique. Melatonin-loaded PCL nanoparticles were successfully prepared with precise control of the particle size by effectively tuning process parameters. The effect of process parameters on the particle size was assessed by dynamic light scattering for producing particles with suitable size for transdermal applications. Quantification of encapsulated melatonin was performed by mean of UV spectrophotometry, obtaining the estimation of encapsulation efficiency (EE%) and loading capacity (LC%). An EE% higher than 80% was obtained. Differential scanning calorimetry (DSC) analysis of NPs was performed to confirm effective encapsulation in the solid phase. Cotton fabrics, functionalized by imbibition with the nano-suspension, were analyzed by scanning electron microscopy to check morphology, adhesion and distribution of the NPs on the surface; melatonin transdermal release from the functionalized fabric was performed via Franz’s cells by using a synthetic membrane. NPs were uniformly distributed on cotton fibres, as confirmed by SEM observations; the release test showed a continuous and controlled release whose kinetics were satisfactorily described by Baker–Lonsdale model.
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Baek JS, Choo CC, Tan NS, Loo SCJ. Sustained-releasing hollow microparticles with dual-anticancer drugs elicit greater shrinkage of tumor spheroids. Oncotarget 2017; 8:80841-80852. [PMID: 29113348 PMCID: PMC5655243 DOI: 10.18632/oncotarget.20591] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 08/04/2017] [Indexed: 12/17/2022] Open
Abstract
Polymeric particulate delivery systems are vastly explored for the delivery of chemotherapeutic agents. However, the preparation of polymeric particulate systems with the capability of providing sustained release of two or more drugs is still a challenge. Herein, poly (D, L-lactic-co-glycolic acid, 50:50) hollow microparticles co-loaded with doxorubicin and paclitaxel were developed through double-emulsion solvent evaporation technique. Hollow microparticles were formed through the addition of an osmolyte into the fabrication process. The benefits of hollow over solid microparticles were found to be higher encapsulation efficiency and a more rapid drug release rate. Further modification of the hollow microparticles was accomplished through the introduction of methyl-β-cyclodextrin. With this, a higher encapsulation efficiency of both drugs and an enhanced cumulative release were achieved. Spheroid study further demonstrated that the controlled release of the drugs from the methyl-β-cyclodextrin -loaded hollow microparticles exhibited enhanced tumor regressions of MCF-7 tumor spheroids. Such hollow dual-drug-loaded hollow microparticles with sustained releasing capabilities may have a potential for future applications in cancer therapy.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Chee Chong Choo
- School of Biological Sciences, Nanyang Technological University, 637551, Singapore
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University, 637551, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, 639798, Singapore.,Institute of Molecular Cell Biology, Proteos, Agency for Science Technology and Research, 138673, Singapore.,KK Research Centre, KK Women's and Children Hospital, 229899, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore.,Singapore Centre on Environmental Life Sciences Engineering, Nanyang Technological University, 637551, Singapore
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14
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Baek JS, Yeo EW, Lee YH, Tan NS, Loo SCJ. Controlled-release nanoencapsulating microcapsules to combat inflammatory diseases. Drug Des Devel Ther 2017; 11:1707-1717. [PMID: 28652708 PMCID: PMC5472418 DOI: 10.2147/dddt.s133344] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The World Health Organization (WHO) has reported that globally 235 million people suffer from chronic and other inflammatory diseases. The short half-lives of nonsteroidal anti-inflammatory drugs (NSAIDs) and their notoriety in causing gastrointestinal discomforts, warrants these drugs to be released in a controlled and sustained manner. Although polymeric particles have been widely used for drug delivery, there are few reports that showcase their ability in encapsulating and sustaining the release of NSAIDs. In this paper, polymeric nanoencapsulating microcapsules loaded with NSAIDs were fabricated using solid/water/oil/water emulsion solvent evaporation method. Two NSAIDs, ibuprofen and naproxen, were first pre-loaded into nanoparticles and then encapsulated into a larger hollow microcapsule that contained the third NSAID, celecoxib. A high encapsulation efficiency (%) of these NSAIDs was achieved and a sustained release (up to 30 days) of these drugs in phosphate-buffered saline was observed. Then, a gastrointestinal drug - cimetidine (CIM) - was co-loaded with the NSAIDs. This floating delivery system exhibited excellent buoyancy (~88% up to 24 h) in simulated gastric fluid. It also allowed a sequential release of the drugs, whereby an immediate release of CIM followed by NSAIDs was observed. Drug release of the NSAIDs observed Fickian diffusion mechanism, whereas CIM observed non-Fickian diffusion. Therefore, this delivery system is a promising platform to control the delivery of NSAIDs to combat inflammatory diseases, thereby protecting against possible gastrointestinal side effects that may arise from the overuse of NSAIDs.
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Affiliation(s)
- Jong-Suep Baek
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Eng Wan Yeo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
| | - Yin Hao Lee
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE), Nanyang Technological University, Singapore
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15
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Kharel S, Lee WL, Lee XY, Loo SCJ. Osmogen-Mediated One-Step Technique of Fabricating Hollow Microparticles for Encapsulation and Delivery of Bioactive Molecules. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600328] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 10/07/2016] [Indexed: 01/28/2023]
Affiliation(s)
- Sharad Kharel
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798
| | - Wei Li Lee
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798
| | - Xuan Yi Lee
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798
| | - Say Chye Joachim Loo
- School of Materials Science and Engineering; Nanyang Technological University; 50 Nanyang Avenue Singapore 639798
- Singapore Centre on Environmental Life Sciences Engineering (SCELSE); Nanyang Technological University; Singapore 637551
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