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Fazal T, Murtaza BN, Shah M, Iqbal S, Rehman MU, Jaber F, Dera AA, Awwad NS, Ibrahium HA. Recent developments in natural biopolymer based drug delivery systems. RSC Adv 2023; 13:23087-23121. [PMID: 37529365 PMCID: PMC10388836 DOI: 10.1039/d3ra03369d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 07/24/2023] [Indexed: 08/03/2023] Open
Abstract
Targeted delivery of drug molecules to diseased sites is a great challenge in pharmaceutical and biomedical sciences. Fabrication of drug delivery systems (DDS) to target and/or diagnose sick cells is an effective means to achieve good therapeutic results along with a minimal toxicological impact on healthy cells. Biopolymers are becoming an important class of materials owing to their biodegradability, good compatibility, non-toxicity, non-immunogenicity, and long blood circulation time and high drug loading ratio for both macros as well as micro-sized drug molecules. This review summarizes the recent trends in biopolymer-based DDS, forecasting their broad future clinical applications. Cellulose chitosan, starch, silk fibroins, collagen, albumin, gelatin, alginate, agar, proteins and peptides have shown potential applications in DDS. A range of synthetic techniques have been reported to design the DDS and are discussed in the current study which is being successfully employed in ocular, dental, transdermal and intranasal delivery systems. Different formulations of DDS are also overviewed in this review article along with synthesis techniques employed for designing the DDS. The possibility of these biopolymer applications points to a new route for creating unique DDS with enhanced therapeutic qualities for scaling up creative formulations up to the clinical level.
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Affiliation(s)
- Tanzeela Fazal
- Department of Chemistry, Abbottabad University of Science and Technology Pakistan
| | - Bibi Nazia Murtaza
- Department of Zoology, Abbottabad University of Science and Technology Pakistan
| | - Mazloom Shah
- Department of Chemistry, Faculty of Science, Grand Asian University Sialkot Pakistan
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST) H-12 Islamabad 46000 Pakistan
| | - Mujaddad-Ur Rehman
- Department of Microbiology, Abbottabad University of Science & Technology Pakistan
| | - Fadi Jaber
- Department of Biomedical Engineering, Ajman University Ajman UAE
- Center of Medical and Bio-Allied Health Sciences Research, Ajman University Ajman UAE
| | - Ayed A Dera
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University Abha Saudi Arabia
| | - Nasser S Awwad
- Chemistry Department, Faculty of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
| | - Hala A Ibrahium
- Biology Department, Faculty of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
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Burki F, Shah KU, Razaque G, Shah SU, Nawaz A, Saeed MD, Rehman MU, Bibi H, Alfatama M, Elsayed TM. Optimization of Chitosan-Decorated Solid Lipid Nanoparticles for Improved Flurbiprofen Transdermal Delivery. ACS Omega 2023; 8:19302-19310. [PMID: 37305303 PMCID: PMC10249022 DOI: 10.1021/acsomega.2c08135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/08/2023] [Indexed: 06/13/2023]
Abstract
Transdermal delivery is a potential alternative route to oral administration for drugs associated with stomach discomfort, such as flurbiprofen, a widely nonsteroidal anti-inflammatory drug (NSAID). This study aimed to design solid lipid nanoparticle (SLN) transdermal formulations of flurbiprofen. Chitosan-coated SLNs were prepared by the solvent emulsification method, and their properties and permeation profiles across the excised rat skin were characterized. The particle size of uncoated SLNs was at 695 ± 4.65 nm, which increased to 714 ± 6.13, 847 ± 5.38, and 900 ± 8.65 nm upon coating with 0.05, 0.10, and 0.20% of chitosan, respectively. The drug association efficiency was improved when a higher concentration of chitosan was employed over SLN droplets that endowed a higher affinity of flurbiprofen with chitosan. The drug release was significantly retarded as compared to the uncoated entities and followed non-Fickian anomalous diffusion that was depicted by "n" values of >0.5 and <1. Also, the total permeation of chitosan-coated SLNs (F7-F9) was significantly higher than that of the noncoated formulation (F5). Overall, this study has successfully designed a suitable carrier system of chitosan-coated SLNs that provide insight into the current conventional therapeutic approaches and suggest new directions for the advancements in transdermal drug delivery systems for improved permeation of flurbiprofen.
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Affiliation(s)
- Firdous
Ahmad Burki
- Particle
Design and Drug Deliveryery Laboratory, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Khyber Pakhtunkhwa, Pakistan
| | - Kifayat Ullah Shah
- Particle
Design and Drug Deliveryery Laboratory, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Khyber Pakhtunkhwa, Pakistan
| | - Ghulam Razaque
- Faculty
of Pharmacy and Health Sciences, University
of Balochistan, Quetta 08770, Pakistan
| | - Shefaat Ullah Shah
- Particle
Design and Drug Deliveryery Laboratory, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Khyber Pakhtunkhwa, Pakistan
| | - Asif Nawaz
- Particle
Design and Drug Deliveryery Laboratory, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Danish Saeed
- Particle
Design and Drug Deliveryery Laboratory, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Khyber Pakhtunkhwa, Pakistan
| | - Maqsood Ur Rehman
- Department
of Pharmacy, Faculty of Sciences, University
of Malakand, Dir Lower 18800, Khyber Pakhtunkhwa, Pakistan
| | - Hadia Bibi
- Department
of Pharmacy, Women Institute of Learning, Abbottabad 22080, Khyber Pakhtunkhwa, Pakistan
| | - Mulham Alfatama
- Faculty
of Pharmacy, Universiti Sultan Zainal Abidin,
Besut Campus, Besut 22200, Malaysia
| | - Tarek M. Elsayed
- Faculty
of Pharmacy, Universiti Sultan Zainal Abidin,
Besut Campus, Besut 22200, Malaysia
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Chuah LH, Loo HL, Goh CF, Fu JY, Ng SF. Chitosan-based drug delivery systems for skin atopic dermatitis: recent advancements and patent trends. Drug Deliv Transl Res 2023; 13:1436-1455. [PMID: 36808298 PMCID: PMC9937521 DOI: 10.1007/s13346-023-01307-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2023] [Indexed: 02/20/2023]
Abstract
Atopic dermatitis (AD) is a complex, relapsing inflammatory skin disease with a considerable social and economic burden globally. AD is primarily characterized by its chronic pattern and it can have important modifications in the quality of life of the patients and caretakers. One of the fastest-growing topics in translational medicine today is the exploration of new or repurposed functional biomaterials into drug delivery therapeutic applications. This area has gained a considerable amount of research which produced many innovative drug delivery systems for inflammatory skin diseases like AD. Chitosan, a polysaccharide, has attracted attention as a functional biopolymer for diverse applications, especially in pharmaceutics and medicine, and has been considered a promising candidate for AD treatment due to its antimicrobial, antioxidative, and inflammatory response modulation properties. The current pharmacological treatment for AD involves prescribing topical corticosteroid and calcineurin inhibitors. However, the adverse reactions associated with the long-term usage of these drugs such as itching, burning, or stinging sensation are also well documented. Innovative formulation strategies, including the use of micro- and nanoparticulate systems, biopolymer hydrogel composites, nanofibers, and textile fabrication are being extensively researched with an aim to produce a safe and effective delivery system for AD treatment with minimal side effects. This review outlines the recent development of various chitosan-based drug delivery systems for the treatment of AD published in the past 10 years (2012-2022). These chitosan-based delivery systems include hydrogels, films, micro-, and nanoparticulate systems as well as chitosan textile. The global patent trends on chitosan-based formulations for the AD are also discussed.
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Affiliation(s)
- Lay-Hong Chuah
- grid.440425.30000 0004 1798 0746School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Malaysia
| | - Hooi-Leong Loo
- grid.440425.30000 0004 1798 0746School of Pharmacy, Monash University Malaysia, Bandar Sunway, 47500 Subang Jaya, Malaysia
| | - Choon Fu Goh
- grid.11875.3a0000 0001 2294 3534Discipline of Pharmaceutical Technology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia
| | - Ju-Yen Fu
- grid.410876.c0000 0001 2170 0530Malaysian Palm Oil Board, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia
| | - Shiow-Fern Ng
- Centre for Drug Delivery Technology, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, 50300, Kuala Lumpur, Malaysia.
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Li H, Yao J, Guo Y, Huo J, Zhang H, Zhang Z, Zhao J, Zhang C. Preparation of Conotoxin-Encapsulated Chitosan Nanoparticles and Evaluation of Their Skin Permeability. AAPS PharmSciTech 2023; 24:53. [PMID: 36707459 DOI: 10.1208/s12249-023-02509-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 01/03/2023] [Indexed: 01/28/2023] Open
Abstract
μ-Conotoxin CnIIIC (conotoxin, CTX)-loaded chitosan nanoparticles (CTX-NPs) were prepared using the ionic cross-linking method. The CTX-NPs were spherical and well with a polydispersity index of 0.292 ± 0.039, drug loading efficiency of 25.9 ± 1.2%, and encapsulation efficiency of 95.6 ± 1.3%. In vitro release studies showed that the release behavior of CTX-NPs in a pH 5.0 acetate buffer followed zero-order kinetics. In vitro transdermal experiments using Franz diffusion cells mounted with mouse abdominal skin demonstrated that the cumulative intradermal deposition amount of CTX per unit area in 8 h (D8) and permeability coefficient (Pf) of CTX loaded on CTX-NPs were 2.30- and 7.71-times that of the CTX solution. In vivo transdermal experiments in mice showed that the amount of CTX deposited in the skin after 8 h of CTX saline administration was significantly lower than that of CTX deposited in the skin after administration of CTX-NPs. In vitro fluorescence labeling transdermal studies through Franz diffusion cells mounted with mouse abdominal skin indicated that CTX-NPs aggregated at hair follicles. Skin irritation tests in mice indicated that the irritation due to CTX-NPs was negligible. The cytotoxicity experiment showed that the viability of Balb/c 3T3 cells with CTX-NPs containing 230 μg/mL (0.08 μM) CTX was greater than 75%. CTX-NPs increase intradermal deposition of CTX by accumulating in hair follicles, which has positive implications for transdermal penetration of CTX.
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Affiliation(s)
- Haigang Li
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China
| | - JiPeng Yao
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China
| | - Yong Guo
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China
| | - JingJing Huo
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China
| | - Haijuan Zhang
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China
| | - Zengtao Zhang
- Shandong Renrui Biotechnology Inc., RiZhao, Shandong, People's Republic of China
| | - Jinlong Zhao
- Department of Thoracic Surgery, Linyi People's Hospital, Linyi, 276000, Shandong, People's Republic of China.
| | - Chun Zhang
- College of Medicine, Linyi University, Linyi, 276000, Shandong, People's Republic of China. .,Shandong Renrui Biotechnology Inc., RiZhao, Shandong, People's Republic of China.
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Shah MKA, Azad AK, Nawaz A, Ullah S, Latif MS, Rahman H, Alsharif KF, Alzahrani KJ, El-Kott AF, Albrakati A, Abdel-Daim MM. Formulation Development, Characterization and Antifungal Evaluation of Chitosan NPs for Topical Delivery of Voriconazole In Vitro and Ex Vivo. Polymers (Basel) 2021; 14:polym14010135. [PMID: 35012154 PMCID: PMC8747354 DOI: 10.3390/polym14010135] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/12/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022] Open
Abstract
This study aims to develop chitosan-based voriconazole nanoparticles (NPs) using spray-drying technique. The effect of surfactants and polymers on the physicochemical properties, in vitro release, and permeation of NPs was investigated. The prepared NPs containing various surfactants and polymers (e.g., Tween 20 (T20), Tween 80 (T80), sodium lauryl sulfate (SLS), propylene glycol (PG), and Polyethylene glycol-4000 (PEG-4000)) were physiochemically evaluated for size, zeta potential, drug content, percent entrapment efficiency, in vitro release, and permeation across rats' skin. A Franz diffusion cell was used for evaluating the in vitro release and permeation profile. The voriconazole-loaded NPs were investigated for antifungal activity against Candida albicans (C. albicans). The prepared NPs were in the nano range (i.e., 160-500 nm) and positively charged. Images taken by a scanning electron microscope showed that all prepared NPs were spherical and smooth. The drug content of NPs ranged from 75% to 90%. Nanoparticle formulations exhibited a good in vitro release profile and transport voriconazole across the rat's skin in a slow control release manner. The NPs containing SLS, T80, and PG exhibited the best penetration and skin retention profile. In addition, the formulation exhibited a potential antifungal effect against C. albicans. It was concluded that the development of chitosan NPs has a great potential for the topical delivery of voriconazole against fungal infection.
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Affiliation(s)
- Muhammad Khurshid Alam Shah
- Advanced Drug Delivery Lab, Gomal Center of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.K.A.S.); (A.N.); (S.U.); (M.S.L.)
| | - Abul Kalam Azad
- Pharmaceutical Technology Unit, Faculty of Pharmacy, AIMST University, Bedong 08100, Kedah, Malaysia
- Correspondence: (A.K.A.); (M.M.A.-D.)
| | - Asif Nawaz
- Advanced Drug Delivery Lab, Gomal Center of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.K.A.S.); (A.N.); (S.U.); (M.S.L.)
| | - Shafi Ullah
- Advanced Drug Delivery Lab, Gomal Center of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.K.A.S.); (A.N.); (S.U.); (M.S.L.)
| | - Muhammad Shahid Latif
- Advanced Drug Delivery Lab, Gomal Center of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (M.K.A.S.); (A.N.); (S.U.); (M.S.L.)
| | - Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, Wonju 26426, Gangwon-do, Korea;
| | - Khalaf F. Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (K.F.A.); (K.J.A.)
| | - Khalid J. Alzahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; (K.F.A.); (K.J.A.)
| | - Attalla F. El-Kott
- Biology Department, Faculty of Science, King Khalid University, Abha 61421, Saudi Arabia;
- Zoology Department, Faculty of Science, Damanhour University, Damanhour 22511, Egypt
| | - Ashraf Albrakati
- Department of Human Anatomy, College of Medicine, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Mohamed M. Abdel-Daim
- Pharmacology Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
- Correspondence: (A.K.A.); (M.M.A.-D.)
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Ullah W, Nawaz A, Akhlaq M, Shah KU, Latif MS, Doolaanea AA, Alfatama M. Transdermal delivery of gatifloxacin carboxymethyl cellulose-based patches: Preparation and characterization. J Drug Deliv Sci Technol 2021; 66:102783. [DOI: 10.1016/j.jddst.2021.102783] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Zhang D, Bian Q, Zhou Y, Huang Q, Gao J. The application of label-free imaging technologies in transdermal research for deeper mechanism revealing. Asian J Pharm Sci 2020; 16:265-279. [PMID: 34276818 PMCID: PMC8261078 DOI: 10.1016/j.ajps.2020.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/23/2020] [Accepted: 07/06/2020] [Indexed: 12/13/2022] Open
Abstract
The penetration behavior of topical substances in the skin not only relates to the transdermal delivery efficiency but also involves the safety and therapeutic effect of topical products, such as sunscreen and hair growth products. Researchers have tried to illustrate the transdermal process with diversified theories and technologies. Directly observing the distribution of topical substances on skin by characteristic imaging is the most convincing approach. Unfortunately, fluorescence labeling imaging, which is commonly used in biochemical research, is limited for transdermal research for most topical substances with a molecular mass less than 500 Da. Label-free imaging technologies possess the advantages of not requiring any macromolecular dyes, no tissue destruction and an extensive substance detection capability, which has enabled rapid development of such technologies in recent years and their introduction to biological tissue analysis, such as skin samples. Through the specific identification of topical substances and endogenous tissue components, label-free imaging technologies can provide abundant tissue distribution information, enrich theoretical and practical guidance for transdermal drug delivery systems. In this review, we expound the mechanisms and applications of the most popular label-free imaging technologies in transdermal research at present, compare their advantages and disadvantages, and forecast development prospects.
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Affiliation(s)
- Danping Zhang
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qiong Bian
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yi Zhou
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Qiaoling Huang
- The Third People's Hospital of Hangzhou, Hangzhou 310012, China
| | - Jianqing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- Jiangsu Engineering Research Center for New-Type External and Transdermal Preparations, Changzhou 213000, China
- Corresponding author.
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Pena AM, Chen X, Pence IJ, Bornschlögl T, Jeong S, Grégoire S, Luengo GS, Hallegot P, Obeidy P, Feizpour A, Chan KF, Evans CL. Imaging and quantifying drug delivery in skin - Part 2: Fluorescence andvibrational spectroscopic imaging methods. Adv Drug Deliv Rev 2020; 153:147-168. [PMID: 32217069 PMCID: PMC7483684 DOI: 10.1016/j.addr.2020.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 01/31/2023]
Abstract
Understanding the delivery and diffusion of topically-applied drugs on human skin is of paramount importance in both pharmaceutical and cosmetics research. This information is critical in early stages of drug development and allows the identification of the most promising ingredients delivered at optimal concentrations to their target skin compartments. Different skin imaging methods, invasive and non-invasive, are available to characterize and quantify the spatiotemporal distribution of a drug within ex vivo and in vivo human skin. The first part of this review detailed invasive imaging methods (autoradiography, MALDI and SIMS). This second part reviews non-invasive imaging methods that can be applied in vivo: i) fluorescence (conventional, confocal, and multiphoton) and second harmonic generation microscopies and ii) vibrational spectroscopic imaging methods (infrared, confocal Raman, and coherent Raman scattering microscopies). Finally, a flow chart for the selection of imaging methods is presented to guide human skin ex vivo and in vivo drug delivery studies.
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Affiliation(s)
- Ana-Maria Pena
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Xueqin Chen
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Isaac J Pence
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Thomas Bornschlögl
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Sinyoung Jeong
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Sébastien Grégoire
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France.
| | - Gustavo S Luengo
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Philippe Hallegot
- L'Oréal Research and Innovation, 1 avenue Eugène Schueller BP22, 93600 Aulnay-sous-Bois, France
| | - Peyman Obeidy
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Amin Feizpour
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America
| | - Kin F Chan
- Simpson Interventions, Inc., Woodside, CA 94062, United States of America
| | - Conor L Evans
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, CNY149-3, 13(th) St, Charlestown, MA 02129, United States of America.
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Nawaz A, Wong TW. Chitosan-Carboxymethyl-5-Fluorouracil-Folate Conjugate Particles: Microwave Modulated Uptake by Skin and Melanoma Cells. J Invest Dermatol 2018; 138:2412-22. [DOI: 10.1016/j.jid.2018.04.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 12/29/2022]
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Zainudin BH, Wong TW, Hamdan H. Design of low molecular weight pectin and its nanoparticles through combination treatment of pectin by microwave and inorganic salts. Polym Degrad Stab 2018; 147:35-40. [DOI: 10.1016/j.polymdegradstab.2017.11.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Xu Y, Han J, Chai Y, Yuan S, Lin H, Zhang X. Development of porous chitosan/tripolyphosphate scaffolds with tunable uncross-linking primary amine content for bone tissue engineering. Mater Sci Eng C Mater Biol Appl 2017; 85:182-190. [PMID: 29407147 DOI: 10.1016/j.msec.2017.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/23/2017] [Accepted: 12/28/2017] [Indexed: 01/22/2023]
Abstract
The primary amine along the chitosan backbone plays a key role in biomedical applications. Although chitosan-based porous scaffolds have been widely used in tissue engineering, it remains very challenging to regulate uncross-linking primary amine content (CN) in scaffolds in order to realize particular mechanical and biological properties. In the present study, chitosan/tripolyphosphate (TPP) scaffolds with controlled CN (i.e., degree of cross-linking) were prepared based on the ionic-dependent solubility of chitosan together with the freezing process. The effects of the concentration of TPP (CTPP) and NaCl (CNaCl) in the cross-linking solution on CN were studied by infrared spectroscopy, ninhydrin assays and elemental analysis. The results showed that CN decreased with increasing CTPP and decreasing CNaCl. CN affected physicomechanical properties such as swelling behavior and the mechanical strength of the chitosan/TPP scaffolds. The uncross-linking primary amine in scaffolds can be used for chemical and biological modifications. The protein loading of the scaffolds demonstrated that the pH-responsive adsorption and release behavior was influenced by CN. Cell experiments also illustrated that CN affected the proliferation of bone marrow mesenchymal stem cells (BM-MSCs). All of these results indicate that these porous chitosan/TPP scaffolds containing uncross-linking primary amines are potentially useful for applications in regenerative bone medicine.
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Affiliation(s)
- Yongxiang Xu
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China
| | - Jianmin Han
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China
| | - Yuan Chai
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China
| | - Shenpo Yuan
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China
| | - Hong Lin
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China.
| | - Xuehui Zhang
- Department of Dental Materials, Peking University School and Hospital of Stomatology, China; National Engineering Laboratory for Digital and Material Technology of Stomatology, China; Beijing Key Laboratory of Digital Stomatology, China.
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Nawaz A, Wong TW. Microwave as skin permeation enhancer for transdermal drug delivery of chitosan-5-fluorouracil nanoparticles. Carbohydr Polym 2017; 157:906-919. [DOI: 10.1016/j.carbpol.2016.09.080] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 09/20/2016] [Accepted: 09/26/2016] [Indexed: 10/20/2022]
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