1
|
Zhang J, Zuo H, Fu Y, Cao Y, Li Q, Zhang Q, Zheng Y, Wang Y, Wu D, Chen W, Fang J. Intranasal delivery of phenytoin loaded layered double hydroxide nanoparticles improves therapeutic effect on epileptic seizures. J Nanobiotechnology 2024; 22:144. [PMID: 38566094 PMCID: PMC10985904 DOI: 10.1186/s12951-024-02405-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024] Open
Abstract
Improving the efficiency of antiseizure medication entering the brain is the key to reducing its peripheral toxicity. A combination of intranasal administration and nanomedicine presents a practical approach for treating epileptic seizures via bypassing the blood-brain barrier. In this study, phenytoin (PHT) loaded layered double hydroxide nanoparticles (BSA-LDHs-PHT) were fabricated via a coprecipitation - hydrothermal method for epileptic seizure control. In this study, we expound on the preparation method and characterization of BSA-LDHs-PHT. In-vitro drug release experiment shows both rapid and continuous drug release from BSA-LDHs-PHT, which is crucial for acute seizure control and chronic epilepsy therapy. In-vivo biodistribution assays after intranasal administration indicate excellent brain targeting ability of BSA-LDHs. Compared to BSA-Cyanine5.5, BSA-LDHs-Cyanine5.5 were associated with a higher brain/peripheral ratio across all tested time points. Following intranasal delivery with small doses of BSA-LDHs-PHT, the latency of seizures in the pentylenetetrazole-induced mouse models was effectively improved. Collectively, the present study successfully designed and applied BSA-LDHs-PHT as a promising strategy for treating epileptic seizures with an enhanced therapeutic effect.
Collapse
Affiliation(s)
- Jingxin Zhang
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Huali Zuo
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Yanlu Fu
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Yina Cao
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Qiwei Li
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
| | - Qi Zhang
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yuyi Zheng
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Yi Wang
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Di Wu
- Key Laboratory of Neuropharmacology and Translational Medicine of Zhejiang Province, School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Weiyu Chen
- Department of Respiratory and Critical Care Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China.
| | - Jiajia Fang
- Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China.
| |
Collapse
|
2
|
Dowbysz A, Samsonowicz M, Kukfisz B, Koperniak P. Recent Developments of Nano Flame Retardants for Unsaturated Polyester Resin. MATERIALS (BASEL, SWITZERLAND) 2024; 17:852. [PMID: 38399103 PMCID: PMC10890331 DOI: 10.3390/ma17040852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/28/2023] [Accepted: 02/06/2024] [Indexed: 02/25/2024]
Abstract
For many years, efforts have been made to reduce the flammability of unsaturated polyester resins (UPRs), which are often used in the rail, shipbuilding, and construction industries. Without modification, they often fail to meet fire safety standards. Despite a rich history of flame retardants (FRs) applied to UPRs, researchers seek new solutions that will provide lower flammability and smoke density, as well as attaining a lower environmental impact from the composites. The objective of the study is to highlight the most important recent research on promising nano FRs in order to promote their further development. Mechanisms of action of several groups of nano FRs, such as clay-based, carbon-based, transition metal compounds, layered double hydroxides, polyhedral oligomeric silsesquioxanes, and others, including bio-based, have been studied. Particular emphasis has been laid on nano FRs applied to UPRs, and their influences on thermal stability, flammability, and mechanical properties. Moreover, the environmental impact and toxicity of nano FRs have been discussed. Results have proved that nano FRs applied at low loadings may significantly improve thermal stability, with a simultaneous increase or only a slight decrease in mechanical properties. However, attention on related environmental issues has highlighted the necessity of carefully selecting novel nano FRs.
Collapse
Affiliation(s)
- Adriana Dowbysz
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45A Street, 15-351 Bialystok, Poland;
| | - Mariola Samsonowicz
- Department of Chemistry, Biology and Biotechnology, Bialystok University of Technology, Wiejska 45A Street, 15-351 Bialystok, Poland;
| | - Bożena Kukfisz
- Institute of Safety Engineering, Fire University, Slowackiego Street 52/54, 01-629 Warsaw, Poland;
| | - Piotr Koperniak
- Lukasiewicz Research Network—Institute of Aviation, 110/114 Krakowska Avenue, 02-256 Warsaw, Poland;
| |
Collapse
|
3
|
González Rojas NA, Pacheco Moisés FP, Cruz-Ramos JA, Bezerra FS, Carbajal Arízaga GG. Understanding the synergistic antioxidant mechanism of a layered double hydroxide–lycopene composite by spectroscopic techniques. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-022-02640-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
4
|
Bej S, Ghosh M, Das R, Banerjee P. Evaluation of nanomaterials-grafted enzymes for application in contaminants degradation: Need of the hour with proposed IoT synchronized nanosensor fit sustainable clean water technology in en masse. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
5
|
Layered Double Hydroxide Catalysts Preparation, Characterization and Applications for Process Development: An Environmentally Green Approach. BULLETIN OF CHEMICAL REACTION ENGINEERING & CATALYSIS 2022. [DOI: 10.9767/bcrec.17.1.12195.163-193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The adage of new generation of fine chemicals process is the best process applied in the absence of conventional methods. However, many methods use different reaction parameters, such as basic and acidic catalysts, for example oxidation, reduction, bromination, water splitting, cyanohydrin, ethoxylation, syngas, aldol condensation, Michael addition, asymmetric ring opening of epoxides, epoxidation, Wittig and Heck reaction, asymmetric ester epoxidation of fatty acids, combustion of methane, NOx reduction, biodiesel synthesis, propylene oxide polymerization. Layered Double Hydroxides (LDHs) have received considerable attention due their potential applications in flame retardant and has excellent medicinal property for reducing acidity. These catalysts are characterized using analytical techniques, such as: X-ray diffraction (XRD), Fourier-transform infrared (FT-IR), Raman spectroscopy, Thermogravimetric-Differential Thermal Analyzer (TG-DTA), Scanning electron microscope (SEM), Transmission electron microscopes (TEM), Brunauer-Emmett-Teller (BET) surface area, N2 Adsorption-desorption, Temperature programmed reduction (TPR), X-ray photoelectrons spectroscopy (XPS), which gives its overall picture of its structure, porosity, morphology, thermal stability, reusability, and activity of catalysts. LDHs catalysts have proven to be economic and environmentally friendly. The above discussed applications make these catalysts unique from Green Chemistry point of view since they are reusable, and eco-friendly catalysts. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Collapse
|
6
|
Shankar J, K.M G, Wilson B. Potential applications of nanomedicine for treating Parkinson's disease. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
7
|
Halim A, Qu KY, Zhang XF, Huang NP. Recent Advances in the Application of Two-Dimensional Nanomaterials for Neural Tissue Engineering and Regeneration. ACS Biomater Sci Eng 2021; 7:3503-3529. [PMID: 34291638 DOI: 10.1021/acsbiomaterials.1c00490] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The complexity of the nervous system structure and function, and its slow regeneration rate, makes it more difficult to treat compared to other tissues in the human body when an injury occurs. Moreover, the current therapeutic approaches including the use of autografts, allografts, and pharmacological agents have several drawbacks and can not fully restore nervous system injuries. Recently, nanotechnology and tissue engineering approaches have attracted many researchers to guide tissue regeneration in an effective manner. Owing to their remarkable physicochemical and biological properties, two-dimensional (2D) nanomaterials have been extensively studied in the tissue engineering and regenerative medicine field. The great conductivity of these materials makes them a promising candidate for the development of novel scaffolds for neural tissue engineering application. Moreover, the high loading capacity of 2D nanomaterials also has attracted many researchers to utilize them as a drug/gene delivery method to treat various devastating nervous system disorders. This review will first introduce the fundamental physicochemical properties of 2D nanomaterials used in biomedicine and the supporting biological properties of 2D nanomaterials for inducing neuroregeneration, including their biocompatibility on neural cells, the ability to promote the neural differentiation of stem cells, and their immunomodulatory properties which are beneficial for alleviating chronic inflammation at the site of the nervous system injury. It also discusses various types of 2D nanomaterials-based scaffolds for neural tissue engineering applications. Then, the latest progress on the use of 2D nanomaterials for nervous system disorder treatment is summarized. Finally, a discussion of the challenges and prospects of 2D nanomaterials-based applications in neural tissue engineering is provided.
Collapse
Affiliation(s)
- Alexander Halim
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P.R. China
| | - Kai-Yun Qu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P.R. China
| | - Xiao-Feng Zhang
- Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, P.R. China
| | - Ning-Ping Huang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P.R. China
| |
Collapse
|
8
|
Megariotis G, Romanos N, Avramopoulos A, Mikaelian G, Theodorou DN. In silico study of levodopa in hydrated lipid bilayers at the atomistic level. J Mol Graph Model 2021; 107:107972. [PMID: 34174554 DOI: 10.1016/j.jmgm.2021.107972] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 05/28/2021] [Accepted: 06/10/2021] [Indexed: 11/17/2022]
Abstract
This article presents atomistic molecular dynamics and umbrella sampling simulations of levodopa at various concentrations in hydrated cholesterol-free 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and cholesterol-containing 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) bilayers. Levodopa is the standard medication for Parkinson's disease and is marketed under various trade names; in the context of this article, the levodopa molecule is mostly studied in its zwitterionic form but some results concerning the neutral levodopa are presented as well for comparison purposes. The motivation is to study in detail how levodopa behaves in different hydrated lipid membranes, primarily from the thermodynamic point of view, and reveal aspects of mechanism of its permeation through them. Dependencies of properties on the levodopa concentration are also investigated. Special attention is paid to the calculation of mass density profiles, order parameters and self-diffusion coefficients. Levodopa zwitterions, which form a hydrogen bond network with water and phospholipid molecules, are found to be preferentially located at the water/lipid interface, as well as in the aqueous phase surrounding the cholesterol-free and cholesterol-containing bilayers. This is concluded from the potentials of mean force calculated by umbrella sampling simulations as levodopa is transferred from the lipid to the aqueous phase along an axis perpendicular to the two leaflets of the membranes.
Collapse
Affiliation(s)
- Grigorios Megariotis
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, Athens, GR, 15780, Greece.
| | - Nikolaos Romanos
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, Athens, GR, 15780, Greece
| | - Aggelos Avramopoulos
- Department of Physics, University of Thessaly, 3rd Km Old National Road Lamia Athens, Lamia, GR, 35100, Greece
| | - Georgios Mikaelian
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, Athens, GR, 15780, Greece
| | - Doros N Theodorou
- School of Chemical Engineering, National Technical University of Athens (NTUA), 9 Heroon Polytechniou Street, Zografou Campus, Athens, GR, 15780, Greece
| |
Collapse
|
9
|
Amini R, Rahimpour E, Jouyban A. An optical sensing platform based on hexacyanoferrate intercalated layered double hydroxide nanozyme for determination of chromium in water. Anal Chim Acta 2020; 1117:9-17. [PMID: 32408958 DOI: 10.1016/j.aca.2020.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/31/2020] [Accepted: 04/01/2020] [Indexed: 11/27/2022]
Abstract
In this work, hexacyanoferrate intercalated Ni/Al LDH (Ni/Al-Fe(CN)6 LDH) nanozyme was synthesized by one-pot co-precipitation method and used for determination of chromium in water samples by employing its peroxidase mimicking activity. The synthesized nanozyme can effectively catalyze the oxidation of fluorometric peroxidase substrate terephthalic acid by H2O2 to produce a highly fluorescent product. It was found that Cr(VI) promotes the peroxidase-like activity of Ni/Al-Fe(CN)6 LDH and this effect was intensified by increasing the Cr(VI) concentration. Several variables affecting the fluorescence intensity including the concentration of nanoparticles and reagents as well as reaction time were investigated and optimized. Under the optimal conditions, good linearity was observed in the range of 0.067-10 μM Cr(VI), and limit of detection and quantification were found to be 0.039 and 0.131 μM, respectively. Furthermore, the developed method showed good applicability for the determination of total Cr based on the oxidation of Cr (III) to Cr (VI). The applicability of the proposed method was demonstrated by analyzing various environmental water samples. The presented nanozyme displayed superior benefits in terms of reusability, repeatability, cost and environment-friendly features. The present work aims to expand LDHs based enzyme mimics to optical sensor fields.
Collapse
Affiliation(s)
- Roghayeh Amini
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elaheh Rahimpour
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Abolghasem Jouyban
- Pharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran; Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
10
|
Arisoy S, Sayiner O, Comoglu T, Onal D, Atalay O, Pehlivanoglu B. In vitro and in vivo evaluation of levodopa-loaded nanoparticles for nose to brain delivery. Pharm Dev Technol 2020; 25:735-747. [PMID: 32141798 DOI: 10.1080/10837450.2020.1740257] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Parkinson's disease (PD) is a neurodegenerative disease which is characterized by the loss of dopaminergic neurons in the brain. Levodopa is the drug of choice in the treatment of PD but it exhibits low oral bioavailability (30%) and very low brain uptake due to its extensive metabolism by aromatic amino acid decarboxylase in the peripheral circulation. Moreover, levodopa has psychic, gastrointestinal, and cardiovascular side effects, and most importantly, short and frequent stimulation of dopamine receptors lead to undesirable conditions such as dyskinesia over time. The challenges are to increase the therapeutic efficiency, the bioavailability and decreasing the unfavourable side effects of levodopa. Biocompatible nano-sized drug carriers could address these challenges at molecular level. For this purpose, levodopa-loaded Poly (lactide-co-glycolide) acid nanoparticles were prepared by double emulsion-solvent evaporation method for nose to brain drug delivery. Parameters such as homogenization speed, and external and internal phase content were modified to reach the highest loading efficiency. F1-1 coded formulation showed prolonged release up to 9 h. Carbodiimide method was used for surface modification studies of nanoparticles. The efficacy of the selected nanoparticle formulation has been demonstrated by in vivo experiments in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine induced PD model in mice.
Collapse
Affiliation(s)
- Sema Arisoy
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey.,Faculty of Pharmacy, Department of Pharmaceutical Biotechnology, Inonu University, Malatya, Turkey
| | - Ozgun Sayiner
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Tansel Comoglu
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara University, Ankara, Turkey
| | - Deniz Onal
- Faculty of Medicine, Department of Physiology, Hacettepe University, Ankara, Turkey
| | - Ozbeyen Atalay
- Faculty of Medicine, Department of Physiology, Hacettepe University, Ankara, Turkey
| | - Bilge Pehlivanoglu
- Faculty of Medicine, Department of Physiology, Hacettepe University, Ankara, Turkey
| |
Collapse
|
11
|
Afi F, Mokhtari J, Tahoori F. Layered double hydroxides (LDHs): As efficient heterogeneous catalyst for the cyanosilylation of aromatic aldehydes. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1492920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Fahimeh Afi
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Javad Mokhtari
- Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Fatemeh Tahoori
- Razi Vaccine and Serum Research Institute, Agricultural Research and Extension Organization (AREEO), Karaj, Iran
| |
Collapse
|
12
|
Raju R, Bandyopadhyay S, Sharma A, Gonzalez SV, Carlsen PH, Gautun OR, Glomm WR. Synthesis, Characterization and Drug Loading of Multiresponsive p[NIPAm-co-PEGMA] (core)/p[NIPAm-co-AAc] (Shell) Nanogels with Monodisperse Size Distributions. Polymers (Basel) 2018; 10:E309. [PMID: 30966344 PMCID: PMC6414958 DOI: 10.3390/polym10030309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 11/16/2022] Open
Abstract
We report the synthesis and properties of temperature- and pH-responsive p([NIPAm-co-PEGMA] (core)/[NIPAm-co-AAc] (shell)) nanogels with narrow size distributions, tunable sizes and increased drug loading efficiencies. The core-shell nanogels were synthesized using an optimized two-stage seeded polymerization methodology. The core-shell nanogels show a narrow size distribution and controllable physico-chemical properties. The hydrodynamic sizes, charge distributions, temperature-induced volume phase transition behaviors, pH-responsive behaviors and drug loading capabilities of the core-shell nanogels were investigated using transmission electron microscopy, zeta potential measurements, dynamic light scattering and UV-Vis spectroscopy. The size of the core-shell nanogels was controlled by polymerizing NIPAm with crosslinker poly(ethylene glycol) dimethacrylate (PEGDMA) of different molecular weights (Mn-200, 400, 550 and 750 g/mol) during the core synthesis. It was found that the swelling/deswelling kinetics of the nanogels was sharp and reversible; with its volume phase transition temperature in the range of 40⁻42 °C. Furthermore, the nanogels loaded with l-3,4-dihydroxyphenylalanine (L-DOPA), using a modified breathing-in mechanism, showed high loading and encapsulation efficiencies, providing potential possibilities of such nanogels for biomedical applications.
Collapse
Affiliation(s)
- Rajesh Raju
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Sulalit Bandyopadhyay
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Anuvansh Sharma
- Ugelstad Laboratory, Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Susana Villa Gonzalez
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Per Henning Carlsen
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Odd Reidar Gautun
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), N-7491 Trondheim, Norway.
| | - Wilhelm Robert Glomm
- Polymer Particles and Surface Chemistry Research Group, SINTEF Industry, N-7465 Trondheim, Norway.
| |
Collapse
|
13
|
Hakeem A, Zhan G, Xu Q, Yong T, Yang X, Gan L. Facile synthesis of pH-responsive doxorubicin-loaded layered double hydroxide for efficient cancer therapy. J Mater Chem B 2018; 6:5768-5774. [DOI: 10.1039/c8tb01572d] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method to load doxorubicin with positive charge into layered double hydroxide has been developed to improve its anticancer efficacy.
Collapse
Affiliation(s)
- Abdul Hakeem
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Guiting Zhan
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Qingbo Xu
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Tuying Yong
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Xiangliang Yang
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| | - Lu Gan
- National Engineering Research Center for Nanomedicine
- Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
| |
Collapse
|
14
|
Zhang LX, Liu DQ, Wang SW, Yu XL, Ji M, Xie XX, Liu SY, Liu RT. MgAl-layered double hydroxide nanoparticles co-delivering siIDO and Trp2 peptide effectively reduce IDO expression and induce cytotoxic T-lymphocyte responses against melanoma tumor in mice. J Mater Chem B 2017; 5:6266-6276. [DOI: 10.1039/c7tb00819h] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The co-delivery of Trp2 and siIDO by LDH nanoparticles alleviates immune tolerance and promotes CTL responses in vivo.
Collapse
Affiliation(s)
- Ling-xiao Zhang
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Dong-qun Liu
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Shao-wei Wang
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Xiao-lin Yu
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Mei Ji
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Xi-xiu Xie
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Shu-ying Liu
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| | - Rui-tian Liu
- State Key Laboratory of Biochemical Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing
- China
| |
Collapse
|
15
|
Hawthorne GH, Bernuci MP, Bortolanza M, Tumas V, Issy AC, Del-Bel E. Nanomedicine to Overcome Current Parkinson's Treatment Liabilities: A Systematic Review. Neurotox Res 2016; 30:715-729. [PMID: 27581037 DOI: 10.1007/s12640-016-9663-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/11/2016] [Accepted: 08/16/2016] [Indexed: 12/17/2022]
Abstract
Nanoparticles might be produced and manipulated to present a large spectrum of properties. The physicochemical features of the engineered nanomaterials confer to them different features, including the ability to cross the blood-brain barrier. The main objective of this review is to present the state-of-art research in nano manipulation concerning Parkinson's disease (PD). In the past few years, the association of drugs with nanoparticles solidly improved treatment outcomes. We systematically reviewed 28 studies, describing their potential contributions regarding the role of nanomedicine to increase the efficacy of known pharmacological strategies for PD treatment. Data from animal models resulted in the (i) improvement of pharmacological properties, (ii) more stable drug concentrations, (iii) longer half-live and (iv) attenuation of pharmacological adverse effects. As this approach is recent, with many of the described works being published less than 5 years ago, the expectancy is that this knowledge gives support to an improvement in the current clinical methods to the management of PD and other neurodegenerative diseases.
Collapse
Affiliation(s)
| | - Marcelo Picinin Bernuci
- Department of Health Promotion, University Center of Maringá (UniCesumar), Cesumar Institute of Science Technology and Innovation (ICETI), Maringa, Paraná, Brazil.
| | - Mariza Bortolanza
- Department of Morphology Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Vitor Tumas
- Department of Neurosciences and Behavioral Sciences Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| | - Ana Carolina Issy
- Department of Morphology Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirao Preto, São Paulo, Brazil.
| | - Elaine Del-Bel
- Department of Morphology Physiology and Basic Pathology, Dental School of Ribeirão Preto, University of São Paulo, Ribeirao Preto, São Paulo, Brazil
| |
Collapse
|
16
|
New inorganic-based nanohybrids of layered zinc hydroxide/Parkinson’s disease drug and its chitosan biopolymer nanocarriers with controlled release rate. J INCL PHENOM MACRO 2016. [DOI: 10.1007/s10847-016-0642-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
17
|
Zhu R, Wang Q, Zhu Y, Wang Z, Zhang H, Wu B, Wu X, Wang S. pH sensitive nano layered double hydroxides reduce the hematotoxicity and enhance the anticancer efficacy of etoposide on non-small cell lung cancer. Acta Biomater 2016; 29:320-332. [PMID: 26485164 DOI: 10.1016/j.actbio.2015.10.029] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 10/11/2015] [Accepted: 10/16/2015] [Indexed: 12/14/2022]
Abstract
Etoposide (VP16), used for the treatment of many carcinomas, can cause leukopenia, thrombocytopenia and hair loss. To overcome the side effects and achieve target therapy, layered double hydroxides (LDHs), a pH sensitive layered double hydroxide nanohybrid, was used here as a nano-carrier. The functions of LDHs-VP16 on non-small cell lung cancer (NSCLC) were firstly explored both in vitro and in vivo. In A549 cell line, LDH-VP16 induced apoptosis 2.3-fold as that of plain VP16 by targeting to mitochondrial, stocking cells in G1 phase. The cellular uptake demonstrated the delivery of LDH for VP16 to pass through the membrane and accumulate in mitochondria. As a carrier, LDH greatly decreased the liver toxicity and hematotoxicity of VP16. The detected liver parameters, including glutamic-oxaloacetic transaminase (AST), alkaline phosphatase (ALP), alanine aminotransferase (ALT), were all turn back to normal range after the delivery of LDH, except ALP. In vivo, LDH-VP16 reduced A549 tumor growth significantly by 60.5%, whereas native VP16 exerted no significant anticancer activity. In LDH-VP16 treated mice, the AUC was increased by 6.26 folds as the native drug, and t1/2 of LDH-VP16 was prolonged from 6.68 to 98.78h. LDH-VP16 showed a targeting effect, which largely increase the concentration in tumor and lung. The phosphorylation antibody array and Western Blot of proteins from xenografts revealed that PI3K-AKT signaling was suppressed in the LDH-VP16 treated tumor, while in VP16 treated mice, ERBB signaling pathway was involved. These results suggested that LDH-VP16 diminishes hematotoxicity, targets NSCLC tumor, performs more effectively than VP16, and different signaling pathway is involved compared to VP16. STATEMENT OF SIGNIFICANCE This paper explored that nano-sized layered double hydroxide (LDH) could be used as a pH sensitive delivery system to overcome hematotoxicity and enhance the bioavailability and anticancer efficacy of etoposide (VP16) against non small cell lung cancer, which was not reported before, as the best of our knowledge. We found that the liver and hematotoxicity is nearly recovered after the loading of VP16 in pH sensitive LDH, which prongs the half time from 6.68h to 98h, helps target VP16 to tumor and lung, and protects white blood cells by its pH sensitive and nano-size property. LDH-VP16 achieve markedly performance on non-small cell lung cancer by targeting to mitochondria of A549 cells in vitro and effectively inhibiting the PI3K-AKT signaling pathway in vivo. The inhibition ratio of VP16 on A549 tumor growth is increased from less than 20% (no significance compared to control) to 60.5% after the delivery of LDH. This work provides a novel system for the safe and efficient use of etoposide on non-small cell lung cancer and explores the mechanism of the function of nano carrier in cancer therapy both in vitro and in vivo.
Collapse
Affiliation(s)
- Rongrong Zhu
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Qingxiu Wang
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China; Research Center for Translational Medicine at East Hospital, Tongji University, Shanghai, China
| | - Yanjing Zhu
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Zhaoqi Wang
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Haixia Zhang
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Bin Wu
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Xianzheng Wu
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China.
| | - Shilong Wang
- Tongji Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China; Research Center for Translational Medicine at East Hospital, Tongji University, Shanghai, China.
| |
Collapse
|
18
|
Fa YH, Ni JQ, Wu XJ, Tan JQ, Wu YW. Evaluation of the early response and mechanism of treatment of Parkinson's disease with L-dopa using 18F-fallypride micro-positron emission tomography scanning. Exp Ther Med 2015; 11:101-109. [PMID: 26889225 PMCID: PMC4726873 DOI: 10.3892/etm.2015.2900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 05/29/2015] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to investigate the use of 18F-fallypride micro-positron emission tomography (micro-PET) imaging in the evaluation of the early therapeutic efficacy of L-dopa in the treatment of Parkinson's disease (PD) and the underlying mechanism. 18F-fallypride was synthesized and its specific binding with dopamine (DA) receptors in normal mouse brain was studied. Following the establishment of a mouse model of PD, the animals were divided into normal control, PD model and L-dopa treatment groups. General behavior, swimming test, locomotor activity counts, transmission electron microscopy, immunohistochemical analysis, high performance liquid chromatography-electrochemical detection and 18F-fallypride micro-PET imaging were used to study intergroup differences and the correlation between the changes of striatal uptake of 18F-fallypride and the therapeutic efficacy. The general behavioral features of PD model mice were similar to the clinical symptoms of PD patients and were alleviated after treatment. The swimming time, locomotor activity and frequency of standing posture of PD model mice were lower than those of the control mice, but had no difference from those of the control mice after L-dopa treatment. The number of tyrosine hydroxylase-positive neurons and the striatal contents of glutathione peroxidase, superoxide dismutase, DA and its metabolites 3,5-dihydroxyphenylacetic acid and homovanillic acid in the PD group were lower than those in the control group, but were significantly improved following the treatment; the significant reduction in DOPAC/DA and HVA/DA ratios post treatment suggested that the rate of DA metabolism decreased significantly. The striatal malondialdehyde content in the PD group increased compared with that in the control group, but was reduced after L-dopa treatment. Micro-PET imaging indicated that the uptake of 18F-fallypride in the mouse striatum of the PD group was lower than that of the control group and was significantly increased after the treatment. The mechanism of treatment of PD with L-dopa in mice may involve increasing the number of TH-positive cells and DA receptor levels, as well as reducing the rate of DA metabolism; such changes can be noninvasively observed in vitro by 18F-fallypride imaging.
Collapse
Affiliation(s)
- Yi-Hua Fa
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215000, P.R. China
| | - Jian-Qiang Ni
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Xiao-Jin Wu
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jia-Qing Tan
- Department of Nuclear Medicine, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Yi-Wei Wu
- School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, Jiangsu 215000, P.R. China; Department of Nuclear Medicine, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| |
Collapse
|
19
|
Wei PR, Kuthati Y, Kankala RK, Lee CH. Synthesis and Characterization of Chitosan-Coated Near-Infrared (NIR) Layered Double Hydroxide-Indocyanine Green Nanocomposites for Potential Applications in Photodynamic Therapy. Int J Mol Sci 2015; 16:20943-68. [PMID: 26340627 PMCID: PMC4611849 DOI: 10.3390/ijms160920943] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/21/2015] [Accepted: 08/26/2015] [Indexed: 02/06/2023] Open
Abstract
We designed a study for photodynamic therapy (PDT) using chitosan coated Mg-Al layered double hydroxide (LDH) nanoparticles as the delivery system. A Food and Drug Administration (FDA) approved near-infrared (NIR) fluorescent dye, indocyanine green (ICG) with photoactive properties was intercalated into amine modified LDH interlayers by ion-exchange. The efficient positively charged polymer (chitosan (CS)) coating was achieved by the cross linkage using surface amine groups modified on the LDH nanoparticle surface with glutaraldehyde as a spacer. The unique hybridization of organic-inorganic nanocomposites rendered more effective and successful photodynamic therapy due to the photosensitizer stabilization in the interlayer of LDH, which prevents the leaching and metabolization of the photosensitizer in the physiological conditions. The results indicated that the polymer coating and the number of polymer coats have a significant impact on the photo-toxicity of the nano-composites. The double layer chitosan coated LDH-NH₂-ICG nanoparticles exhibited enhanced photo therapeutic effect compared with uncoated LDH-NH₂-ICG and single layer chitosan-coated LDH-NH₂-ICG due to the enhanced protection to photosensitizers against photo and thermal degradations. This new class of organic-inorganic hybrid nanocomposites can potentially serve as a platform for future non-invasive cancer diagnosis and therapy.
Collapse
Affiliation(s)
- Pei-Ru Wei
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
| | - Yaswanth Kuthati
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
| | - Ranjith Kumar Kankala
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
| | - Chia-Hung Lee
- Department of Life Science and Institute of Biotechnology, National Dong Hwa University, Hualien 974, Taiwan.
| |
Collapse
|
20
|
Pahuja R, Seth K, Shukla A, Shukla RK, Bhatnagar P, Chauhan LKS, Saxena PN, Arun J, Chaudhari BP, Patel DK, Singh SP, Shukla R, Khanna VK, Kumar P, Chaturvedi RK, Gupta KC. Trans-blood brain barrier delivery of dopamine-loaded nanoparticles reverses functional deficits in parkinsonian rats. ACS NANO 2015; 9:4850-71. [PMID: 25825926 DOI: 10.1021/nn506408v] [Citation(s) in RCA: 148] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Sustained and safe delivery of dopamine across the blood brain barrier (BBB) is a major hurdle for successful therapy in Parkinson's disease (PD), a neurodegenerative disorder. Therefore, in the present study we designed neurotransmitter dopamine-loaded PLGA nanoparticles (DA NPs) to deliver dopamine to the brain. These nanoparticles slowly and constantly released dopamine, showed reduced clearance of dopamine in plasma, reduced quinone adduct formation, and decreased dopamine autoxidation. DA NPs were internalized in dopaminergic SH-SY5Y cells and dopaminergic neurons in the substantia nigra and striatum, regions affected in PD. Treatment with DA NPs did not cause reduction in cell viability and morphological deterioration in SH-SY5Y, as compared to bulk dopamine-treated cells, which showed reduced viability. Herein, we report that these NPs were able to cross the BBB and capillary endothelium in the striatum and substantia nigra in a 6-hydroxydopamine (6-OHDA)-induced rat model of PD. Systemic intravenous administration of DA NPs caused significantly increased levels of dopamine and its metabolites and reduced dopamine-D2 receptor supersensitivity in the striatum of parkinsonian rats. Further, DA NPs significantly recovered neurobehavioral abnormalities in 6-OHDA-induced parkinsonian rats. Dopamine delivered through NPs did not cause additional generation of ROS, dopaminergic neuron degeneration, and ultrastructural changes in the striatum and substantia nigra as compared to 6-OHDA-lesioned rats. Interestingly, dopamine delivery through nanoformulation neither caused alterations in the heart rate and blood pressure nor showed any abrupt pathological change in the brain and other peripheral organs. These results suggest that NPs delivered dopamine into the brain, reduced dopamine autoxidation-mediated toxicity, and ultimately reversed neurochemical and neurobehavioral deficits in parkinsonian rats.
Collapse
Affiliation(s)
- Richa Pahuja
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Kavita Seth
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
| | - Anshi Shukla
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
| | - Rajendra Kumar Shukla
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
| | | | | | - Prem Narain Saxena
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
| | - Jharna Arun
- ∥CSIR-Central Drug Research Institute (CSIR-CDRI), Lucknow 226001, India
| | - Bhushan Pradosh Chaudhari
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Devendra Kumar Patel
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Sheelendra Pratap Singh
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
| | - Rakesh Shukla
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
- ∥CSIR-Central Drug Research Institute (CSIR-CDRI), Lucknow 226001, India
| | - Vinay Kumar Khanna
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Pradeep Kumar
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Rajnish Kumar Chaturvedi
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| | - Kailash Chand Gupta
- †CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 80 MG Marg, Lucknow 226001, India
- §Academy of Scientific and Innovative Research (AcSIR), Delhi 110001, India
| |
Collapse
|
21
|
Tan JM, Foo JB, Fakurazi S, Hussein MZ. Release behaviour and toxicity evaluation of levodopa from carboxylated single-walled carbon nanotubes. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:243-253. [PMID: 25671168 PMCID: PMC4311623 DOI: 10.3762/bjnano.6.23] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 12/19/2014] [Indexed: 05/30/2023]
Abstract
This work explores the potential use of commercially obtained, carboxylated, single-walled carbon nanotubes (SWCNT-COOH) as nanocarriers for the antiparkinson drug, levodopa (LD). The resulting nanohybrid was characterized using materials characterization methods including Fourier transform infrared spectroscopy, Raman spectroscopy, elemental analysis, UV-vis spectroscopy and scanning electron microscopy. The results showed that SWCNT-COOH were able to form supramolecular complexes with LD via a π-π stacking interaction and exhibited favourable, slow, sustained-release characteristics as a drug carrier with a release period over more than 20 h. The results obtained from the drug release studies of LD at different pH values showed that the LD-loaded nanohybrid is pH activated. The release kinetics of LD from SWCNT-COOH were well-described by a pseudo-second-order kinetic model. A cytotoxicity assay of the synthesized nanohybrid was also carried out in PC12 cell lines (a widely used, in vitro Parkinson's model for neurotoxicity studies) using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay in order to investigate their possible effects on normal neuronal cells in vitro. It was found that the synthesized nanohybrid did not compromise the cell viability and the PC12 cells remained stable throughout the experiments up to 72 h after treatment.
Collapse
Affiliation(s)
- Julia M Tan
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Jhi Biau Foo
- Laboratory of Molecular Biomedicine, Institute of Bioscience (IBS), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Sharida Fakurazi
- Laboratory of Vaccine and Immunotherapeutics, Institute of Bioscience (IBS), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| |
Collapse
|