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Hassan RH, Gad HA, El-Din SB, Shaker DS, Ishak RA. Chitosan nanoparticles for intranasal delivery of olmesartan medoxomil: Pharmacokinetic and pharmacodynamic perspectives. Int J Pharm 2022; 628:122278. [DOI: 10.1016/j.ijpharm.2022.122278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 09/10/2022] [Accepted: 10/06/2022] [Indexed: 10/31/2022]
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2
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Marwaha TK, Madgulkar A, Bhalekar M, Asgaonkar K, Gachche R, Shewale P. Tailoring the properties of chitosan by grafting with 2-mercaptobenzoic acid to improve mucoadhesion: in silico studies, synthesis and characterization. Prog Biomater 2022; 11:397-408. [PMID: 36205916 DOI: 10.1007/s40204-022-00201-x] [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: 01/25/2022] [Accepted: 08/20/2022] [Indexed: 11/30/2022] Open
Abstract
Mucoadhesive polymers improve oral bioavailability of drugs by prolonging the duration of adhesion of drugs with mucosa. Various methods could be employed to address the problems of mucoadhesive polymers like weak adhesion forces. Chemical modification of polymers, such as the addition of a thiol group or thiolation, is another way for improving the polymers' mucoadhesive properties that is studied in present research work. A novel thiomer of chitosan was prepared by attaching 2-mercaptobenzoic acid, a hydrophobic ligand onto it. The docking of thiomer and chitosan with mucin structure showed higher binding energy for former. The prepared thiomer was subjected to X-ray diffraction and DSC which established reduction in crystallinity and formation of a new compound through changes in glass transition, melting point and change in diffraction pattern. The NMR studies established conjugation of 2-mercapto benzoic acid to chitosan. The increased mucoadhesion in thiomer behaviour (2-3 fold) was confirmed through mucus glycoprotein assay as well as through texture analysis. The permeation enhancing the property of thiomer was established by demonstrating the permeation of phenol red across thiomer treated intestinal membrane. An in vitro cell toxicity assay was done to establish toxicity of chitosan and thiolated chitosan. Finally, the reduced water uptake of thiomer over chitosan proved that the increase in mucoadhesion is not contributed by swelling. Thus, a thiomer with improved mucoadhesion and enhanced permeation properties was prepared and characterized. Hence, all these properties render the newly synthesized polymer a better alternative to chitosan as an excipient for mucoadhesive drug delivery systems.
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Affiliation(s)
- Tejinder K Marwaha
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India.
| | - Ashwini Madgulkar
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India
| | - Mangesh Bhalekar
- Department of Pharmaceutics, AISSMS College of Pharmacy, RB Motilal Kennedy Rd, Near RTO, Sangamvadi, Pune, Maharashtra, 411001, India
| | | | - Rajesh Gachche
- Department of Biotechnology, Savitribaiphule Pune University, Pune, India
| | - Pallavi Shewale
- Department of Biotechnology, Savitribaiphule Pune University, Pune, India
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3
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Xu J, Tao J, Wang J. Design and Application in Delivery System of Intranasal Antidepressants. Front Bioeng Biotechnol 2020; 8:626882. [PMID: 33409272 PMCID: PMC7779764 DOI: 10.3389/fbioe.2020.626882] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 11/27/2020] [Indexed: 12/14/2022] Open
Abstract
One of the major reasons why depressed patients fail their treatment course is the existence of the blood-brain barrier (BBB), which prevents drugs from being delivered to the central nervous system (CNS). In recent years, nasal drug delivery has achieved better systemic bioavailability and activity in low doses in antidepressant treatment. In this review, we focused on the latest strategies for delivery carriers (or formation) of intranasal antidepressants. We began this review with an overview of the nasal drug delivery systems, including nasal drug delivery route, absorption mechanism, advantages, and limitations in the nasal drug delivery route. Next, we introduced the development of nasal drug delivery devices, such as powder devices, liquid-based devices, and so on. Finally, intranasal delivery carriers of antidepressants in clinical studies, including nanogels, nanostructured lipid, liposomes nanoparticles, nanoemulsions/microemulsion, were summarized. Moreover, challenges and future perspectives on recent progress of intranasal delivery carriers in antidepressant treatments were discussed.
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Affiliation(s)
- Jingying Xu
- School of Marxism, Yanshan University, Qinhuangdao, China
- Mental Health Service Center, Yanshan University, Qinhuangdao, China
| | - Jiangang Tao
- School of Marxism, Yanshan University, Qinhuangdao, China
- Mental Health Service Center, Yanshan University, Qinhuangdao, China
| | - Jidong Wang
- Applied Chemistry Key Laboratory of Hebei Province, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao, China
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4
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Rasul RM, Tamilarasi Muniandy M, Zakaria Z, Shah K, Chee CF, Dabbagh A, Rahman NA, Wong TW. A review on chitosan and its development as pulmonary particulate anti-infective and anti-cancer drug carriers. Carbohydr Polym 2020; 250:116800. [PMID: 33049807 PMCID: PMC7434482 DOI: 10.1016/j.carbpol.2020.116800] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/17/2020] [Accepted: 07/19/2020] [Indexed: 12/24/2022]
Abstract
Chitosan, as a biodegradable and biocompatible polymer, is characterized by anti-microbial and anti-cancer properties. It lately has received a widespread interest for use as the pulmonary particulate backbone materials of drug carrier for the treatment of infectious disease and cancer. The success of chitosan as pulmonary particulate drug carrier is a critical interplay of their mucoadhesive, permeation enhancement and site/cell-specific attributes. In the case of nanocarriers, various microencapsulation and micro-nano blending systems have been devised to equip them with an appropriate aerodynamic character to enable efficient pulmonary aerosolization and inhalation. The late COVID-19 infection is met with acute respiratory distress syndrome and cancer. Chitosan and its derivatives are found useful in combating HCoV and cancer as a function of their molecular weight, substituent type and its degree of substitution. The interest in chitosan is expected to rise in the next decade from the perspectives of drug delivery in combination with its therapeutic performance.
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Affiliation(s)
- Ruhisy Mohd Rasul
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE, Universiti Teknologi MARA Selangor, 42300, Puncak Alam, Selangor, Malaysia; Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - M Tamilarasi Muniandy
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE, Universiti Teknologi MARA Selangor, 42300, Puncak Alam, Selangor, Malaysia; Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Zabliza Zakaria
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE, Universiti Teknologi MARA Selangor, 42300, Puncak Alam, Selangor, Malaysia; Particle Design Research Group, Faculty of Pharmacy, Universiti Teknologi MARA Selangor, Puncak Alam, Selangor, Malaysia
| | - Kifayatullah Shah
- Department of Pharmaceutics, Faculty of Pharmacy, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan
| | - Chin Fei Chee
- Nanotechnology & Catalysis Research Centre, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ali Dabbagh
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Noorsaadah Abd Rahman
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Tin Wui Wong
- Non-Destructive Biomedical and Pharmaceutical Research Centre, iPROMISE, Universiti Teknologi MARA Selangor, 42300, Puncak Alam, Selangor, Malaysia; Particle Design Research Group, Faculty of Pharmacy, Universiti Teknologi MARA Selangor, Puncak Alam, Selangor, Malaysia; Sino-Malaysia Molecular Oncology and Traditional Chinese Medicine Delivery Joint Research Centre, Medical College, Yangzhou University. China.
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5
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Marwaha TK, Madgulkar A, Bhalekar M, Asgaonkar K. Molecular docking, synthesis, and characterization of chitosan‐graft‐2‐mercaptobenzoic acid derivative as potential drug carrier. J Appl Polym Sci 2020. [DOI: 10.1002/app.49551] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Ashwini Madgulkar
- Department of Pharmaceutics AISSMS College of Pharmacy Pune Maharashtra India
| | - Mangesh Bhalekar
- Department of Pharmaceutics AISSMS College of Pharmacy Pune Maharashtra India
| | - Kalyani Asgaonkar
- Department of Pharmaceutics AISSMS College of Pharmacy Pune Maharashtra India
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6
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Puri V, Sharma A, Kumar P, Singh I. Thiolation of Biopolymers for Developing Drug Delivery Systems with Enhanced Mechanical and Mucoadhesive Properties: A Review. Polymers (Basel) 2020; 12:E1803. [PMID: 32796741 PMCID: PMC7464630 DOI: 10.3390/polym12081803] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 01/09/2023] Open
Abstract
Biopolymers are extensively used for developing drug delivery systems as they are easily available, economical, readily modified, nontoxic, biodegradable and biocompatible. Thiolation is a well reported approach for enhancing mucoadhesive and mechanical properties of polymers. In the present review article, for the modification of biopolymers different thiolation methods and evaluation/characterization techniques have been discussed in detail. Reported literature on thiolated biopolymers with enhanced mechanical and mucoadhesive properties has been presented conspicuously in text as well as in tabular form. Patents filed by researchers on thiolated polymers have also been presented. In conclusion, thiolation is an easily reproducible and efficient method for customization of mucoadhesive and mechanical properties of biopolymers for drug delivery applications.
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Affiliation(s)
- Vivek Puri
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
- Chitkara University School of Pharmacy, Chitkara University, Himachal Pradesh 174103, India
| | - Ameya Sharma
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
- Chitkara University School of Pharmacy, Chitkara University, Himachal Pradesh 174103, India
| | - Pradeep Kumar
- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa;
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India; (V.P.); (A.S.)
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7
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Garcia MAVT, Garcia CF, Faraco AAG. Pharmaceutical and Biomedical Applications of Native and Modified Starch: A Review. STARCH-STARKE 2020. [DOI: 10.1002/star.201900270] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Maria Aparecida Vieira Teixeira Garcia
- Departamento de Alimentos, Faculdade de Farmácia/UFMG Av. Presidente Antônio Carlos, 6627 ‐ Campus Pampulha ‐ CEP 31270‐901 Belo Horizonte ‐ MG ‐ Brasil Brazil
| | - Cleverson Fernando Garcia
- Departamento de QuímicaCentro Federal de Educação Tecnológica de Minas Gerais (CEFET‐MG) Av. Amazonas, 5.253, Nova Suiça. CEP 30421‐169. Belo Horizonte ‐ MG ‐ Brasil Brazil
| | - André Augusto Gomes Faraco
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia/UFMGAv. Presidente Antônio Carlos, 6627 ‐ Campus Pampulha ‐ CEP 31270‐901 Belo Horizonte ‐ MG ‐ Brasil Brazil
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8
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Guaresti O, Basasoro S, González K, Eceiza A, Gabilondo N. In situ cross–linked chitosan hydrogels via Michael addition reaction based on water–soluble thiol–maleimide precursors. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Devi R, Bhatia M. Thiol functionalization of flaxseed mucilage: Preparation, characterization and evaluation as mucoadhesive polymer. Int J Biol Macromol 2018; 126:101-106. [PMID: 30557645 DOI: 10.1016/j.ijbiomac.2018.12.116] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/11/2018] [Accepted: 12/13/2018] [Indexed: 12/13/2022]
Abstract
The aim of present study is to browse mucoadhesive potential of flaxseed mucilage after thiol functionalization. Thiol-derivatization of flaxseed mucilage (FSM) polysaccharide was obtained by esterification with thioglycolic acid. Thiolation of FSM was confirmed by -SH stretch in FTIR spectra at 2549.01 cm-1. Thiolated flaxseed mucilage (TFSM) was distinguished by XRD, DSC, NMR & SEM analysis. TFSM was found to contain 325.6 mM of thiol groups/g as determined by Ellman's method. The mucoadhesive property of drug loaded TFSM pellets, carried out by using chicken buccal pouch membrane, displayed greater ex-vivo bioadhesion time as compared to FSM. This improvement in mucoadhesion property of TFSM over FSM can be attributed to the formation of disulphide bond between mucus and thiolated mucilage. Further, the in-vitro dissolution study conducted in phosphate buffer (pH 6.8) provided release of diclofenac sodium for a prolonged period of 12 h for TFSM pellets by anomalous transport mechanism of drug release following zero order model of release kinetics.
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Affiliation(s)
- Rupa Devi
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India
| | - Meenakshi Bhatia
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar 125001, India.
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10
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Gopi S, Amalraj A, Sukumaran NP, Haponiuk JT, Thomas S. Biopolymers and Their Composites for Drug Delivery: A Brief Review. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/masy.201800114] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Sreeraj Gopi
- R&D Centre; Aurea Biolabs (P) Ltd, Kolenchery; Cochin 682311 Kerala India
- Chemical Faculty; Gdansk University of Technology; Gdańsk Poland
- International and Inter University Centre for Nanoscience and Nanotechnology; School of Chemical Sciences; Mahatma Gandhi University; Priyadarshini Hills P. O. Kottayam Kerala 686560 India
| | - Augustine Amalraj
- R&D Centre; Aurea Biolabs (P) Ltd, Kolenchery; Cochin 682311 Kerala India
| | | | | | - Sabu Thomas
- International and Inter University Centre for Nanoscience and Nanotechnology; School of Chemical Sciences; Mahatma Gandhi University; Priyadarshini Hills P. O. Kottayam Kerala 686560 India
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11
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Dai S. Natural Cationic Polymers for Advanced Gene and Drug Delivery. CATIONIC POLYMERS IN REGENERATIVE MEDICINE 2014. [DOI: 10.1039/9781782620105-00557] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Gene and drug delivery is becoming more and more important in the treatment of complicated human diseases. Proper gene/drug delivery systems can effectively enhance therapeutic efficiency and minimize various side-effects. To date, a variety of delivery systems have been developed. Different from synthetic materials, natural polymers are abundant in nature, renewable, non-toxic, biocompatible and biodegradable. Owing to the presence of positive charges, natural cationic polymers have found important applications in many biological fields, such as drug/gene delivery and tissue engineering. In gene delivery, natural cationic polymers can condense nucleic acids, protect them from degradation, lower the immunogenicity and improve overall transfection efficiency. In drug delivery, cationic functional groups can alter the amphiphilic properties of the polymers to ensure their suitable applications for delivering hydrophobic or protein drugs. After simple chemical modification, the derivatives of natural cationic polymers show improved performance as functional delivery carriers. In this chapter, details on the chemical modification of natural cationic polymers and their applications in gene/drug delivery is discussed.
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Affiliation(s)
- Sheng Dai
- School of Chemical Engineering, University of Adelaide Australia
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12
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Lim HP, Tey BT, Chan ES. Particle designs for the stabilization and controlled-delivery of protein drugs by biopolymers: a case study on insulin. J Control Release 2014; 186:11-21. [PMID: 24816070 DOI: 10.1016/j.jconrel.2014.04.042] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 04/19/2014] [Accepted: 04/23/2014] [Indexed: 11/24/2022]
Abstract
Natural biopolymers have attracted considerable interest for the development of delivery systems for protein drugs owing to their biocompatibility, non-toxicity, renewability and mild processing conditions. This paper offers an overview of the current status and future perspectives of particle designs using biopolymers for the stabilization and controlled-delivery of a model protein drug--insulin. We first describe the design criteria for polymeric encapsulation and subsequently classify the basic principles of particle fabrication as well as the existing particle designs for oral insulin encapsulation. The performances of these existing particle designs in terms of insulin stability and in vitro release behavior in acidic and alkaline media, as well as their in vivo performance are compared and reviewed. This review forms the basis for future works on the optimization of particle design and material formulation for the development of an improved oral delivery system for protein drugs.
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Affiliation(s)
- Hui-Peng Lim
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway 46150, Selangor, Malaysia.
| | - Beng-Ti Tey
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway 46150, Selangor, Malaysia; Multidisciplinary Platform of Advanced Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway 46150, Selangor, Malaysia.
| | - Eng-Seng Chan
- Chemical Engineering Discipline, School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway 46150, Selangor, Malaysia; Multidisciplinary Platform of Advanced Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway 46150, Selangor, Malaysia.
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13
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Saikia C, Hussain A, Ramteke A, Sharma HK, Maji TK. Crosslinked thiolated starch coated Fe3O4magnetic nanoparticles: Effect of montmorillonite and crosslinking density on drug delivery properties. STARCH-STARKE 2014. [DOI: 10.1002/star.201300277] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Chinmayee Saikia
- Department of Chemical Sciences; Tezpur University; Tezpur Assam India
| | - Anowar Hussain
- Department of Molecular Biology and Biotechnology; Tezpur University; Tezpur Assam India
| | - Anand Ramteke
- Department of Molecular Biology and Biotechnology; Tezpur University; Tezpur Assam India
| | - Hemanta K. Sharma
- Department of Pharmaceutical Sciences; Dibrugarh University; Dibrugarh Assam India
| | - Tarun K. Maji
- Department of Chemical Sciences; Tezpur University; Tezpur Assam India
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14
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Liu Y, Chiu GNC. Dual-Functionalized PAMAM Dendrimers with Improved P-Glycoprotein Inhibition and Tight Junction Modulating Effect. Biomacromolecules 2013; 14:4226-35. [DOI: 10.1021/bm401057c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuanjie Liu
- Department
of Pharmacy, Faculty
of Science, National University of Singapore, Block S4, 18 Science Drive 4, Singapore 117543
| | - Gigi N. C. Chiu
- Department
of Pharmacy, Faculty
of Science, National University of Singapore, Block S4, 18 Science Drive 4, Singapore 117543
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15
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pH sensitive polyelectrolyte complex of O-carboxymethyl chitosan and poly (acrylic acid) cross-linked with calcium for sustained delivery of acid susceptible drugs. Int J Pharm 2012; 436:418-25. [DOI: 10.1016/j.ijpharm.2012.07.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 07/09/2012] [Accepted: 07/10/2012] [Indexed: 11/20/2022]
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16
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Sonia T, Sharma CP. An overview of natural polymers for oral insulin delivery. Drug Discov Today 2012; 17:784-92. [DOI: 10.1016/j.drudis.2012.03.019] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 03/01/2012] [Accepted: 03/31/2012] [Indexed: 10/28/2022]
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17
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Llabot JM, Salman H, Millotti G, Bernkop-Schnürch A, Allemandi D, Manuel Irache J. Bioadhesive properties of poly(anhydride) nanoparticles coated with different molecular weights chitosan. J Microencapsul 2011; 28:455-63. [DOI: 10.3109/02652048.2011.576787] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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18
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Oliveira H, Pires LR, Fernandez R, Martins MCL, Simões S, Pêgo AP. Chitosan-based gene delivery vectors targeted to the peripheral nervous system. J Biomed Mater Res A 2011; 95:801-10. [PMID: 20734332 DOI: 10.1002/jbm.a.32874] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A non-toxic, targeted, simple and efficient system that can specifically transfect peripheral sensorial neurons can pave the way towards the development of new therapeutics for the treatment of peripheral neuropathies. In this study chitosan (CH), a biodegradable polymer, was used as the starting material in the design of a multicomponent vector targeted to the peripheral nervous system (PNS). Polycation-DNA complexes were optimized using imidazole- and thiol-grafted CH (CHimiSH), in order to increase transfection efficiency and allow the formation of ligand conjugated nanocomplexes, respectively. The 50 kDa non-toxic fragment from the tetanus toxin (HC), shown to interact specifically with peripheral neurons and undergo retrograde transport, was grafted to the binary complex via a bi-functional poly(ethylene glycol) (HC-PEG) reactive for the thiol moieties present in the complex surface. The targeting of the developed nanocomplexes was assessed by means of internalization and transfection studies in the ND7/23 (neuronal) vs. NIH 3T3 (fibroblast) cell lines. Targeted transfection was further confirmed in dorsal root ganglion dissociated primary cultures. A versatile, multi-component nanoparticle system that successfully targets and transfects neuronal cell lines, as well as dorsal root ganglia (DRG) primary neuron cultures was obtained for the 1.0 (w/w) HC-PEG/DNA formulation.
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Affiliation(s)
- Hugo Oliveira
- INEB, Instituto de Engenharia Biomédica, Divisão de Biomateriais, Universidade do Porto, Rua do Campo Alegre 823, 4150-180 Porto, Portugal
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19
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Chitosan and Its Derivatives for Drug Delivery Perspective. ADVANCES IN POLYMER SCIENCE 2011. [DOI: 10.1007/12_2011_117] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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LI H, WANG D, WANG X, XU Y, ZHANG L, LIU B. Study on preparation and properties of tannins immobilized chitosan-Ce4+ resins. J RARE EARTH 2010. [DOI: 10.1016/s1002-0721(10)60287-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Dhaliwal S, Jain S, Singh HP, Tiwary AK. Mucoadhesive microspheres for gastroretentive delivery of acyclovir: in vitro and in vivo evaluation. AAPS JOURNAL 2008; 10:322-30. [PMID: 18523891 DOI: 10.1208/s12248-008-9039-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2007] [Accepted: 03/26/2008] [Indexed: 11/30/2022]
Abstract
The aim of the present investigation was to evaluate the potential use of mucoadhesive microspheres for gastroretentive delivery of acyclovir. Chitosan, thiolated chitosan, Carbopol 71G and Methocel K15M were used as mucoadhesive polymers. Microsphere formulations were prepared using emulsion-chemical crosslinking technique and evaluated in vitro, ex-vivo and in-vivo. Gelatin capsules containing drug powder showed complete dissolution (90.5 +/- 3.6%) in 1 h. The release of drug was prolonged to 12 h (78.8 +/- 3.9) when incorporated into mucoadhesive microspheres. The poor bioavailability of acyclovir is attributed to short retention of its dosage form at the absorption sites (in upper gastrointestinal tract to duodenum and jejunum). The results of mucoadhesion study showed better retention of thiolated chitosan microspheres (8.0 +/- 0.8 h) in duodenal and jejunum regions of intestine. The results of qualitative and quantitative GI distribution study also showed significant higher retention of mucoadhesive microspheres in upper GI tract. Pharmacokinetic study revealed that administration of mucoadhesive microspheres could maintain measurable plasma concentration of acyclovir through 24 h, as compared to 5 h after its administration in solution form. Thiolated chitosan microsphere showed superiority over the other formulations as observed with nearly 4.0-fold higher AUC(0-24) value (1,090 +/- 51 ng h/ml) in comparison to drug solution (281 +/- 28 ng h/ml). Overall, the result indicated prolonged delivery with significant improvement in oral bioavailability of acyclovir from mucoadhesive microspheres due to enhanced retention in the upper GI tract.
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Affiliation(s)
- Sumeet Dhaliwal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, Punjab, 147002, India
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Hoyer H, Schlocker W, Krum K, Bernkop-Schnürch A. Preparation and evaluation of microparticles from thiolated polymers via air jet milling. Eur J Pharm Biopharm 2008; 69:476-85. [DOI: 10.1016/j.ejpb.2008.01.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Revised: 12/29/2007] [Accepted: 01/14/2008] [Indexed: 11/29/2022]
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Quan JS, Jiang HL, Kim EM, Jeong HJ, Choi YJ, Guo DD, Yoo MK, Lee HG, Cho CS. pH-sensitive and mucoadhesive thiolated Eudragit-coated chitosan microspheres. Int J Pharm 2008; 359:205-10. [PMID: 18490120 DOI: 10.1016/j.ijpharm.2008.04.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2007] [Revised: 03/26/2008] [Accepted: 04/07/2008] [Indexed: 10/22/2022]
Abstract
The aim of this study was using Eudragit-cysteine conjugate to coat on chitosan microspheres (CMs) for developing an oral protein drug delivery system, having mucoadhesive and pH-sensitive property. Bovine serum albumin (BSA) as a protein model drug was loaded in thiolated Eudragit-coated CMs (TECMs) to study the release character of the delivery system. After thiolated Eudragit coating, it was found that the release rate of BSA from BSA-loaded TECMs was observably suppressed at pH 2.0 PBS solution, while at pH 7.4 PBS solution the BSA can be sustainingly released for several hours. The structural integrity of BSA released from BSA-loaded TECMs was guaranteed by sodium dodecylsulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and circular dichroism (CD) spectroscopy. The mucoadhesive property of TECMs was evaluated and compared with CMs and Eudragit-coated chitosan microspheres (ECMs). It was confirmed that after coating thiolated Eudragit, the percentage of TECMs remained on the isolated porcine intestinal mucosa surface was significantly higher than those of CMs and ECMs. Likewise, gamma camera imaging of Tc-99m labeled microsphere distribution in rats after oral administration also suggested that TECMs had comparatively stronger mucoadhesive characters. Therefore, our results indicated that TECMs have potentials to be an oral protein drug carrier.
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Affiliation(s)
- Ji-Shan Quan
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, South Korea
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Pinto R, Amaral AL, Ferreira EC, Mota M, Vilanova M, Ruel K, Gama M. Quantification of the CBD-FITC conjugates surface coating on cellulose fibres. BMC Biotechnol 2008; 8:1. [PMID: 18184429 PMCID: PMC2254392 DOI: 10.1186/1472-6750-8-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2007] [Accepted: 01/09/2008] [Indexed: 11/24/2022] Open
Abstract
Background Cellulose Binding Domains (CBD) were conjugated with fluorescein isothiocyanate (FITC). The surface concentration of the Binding Domains adsorbed on cellulose fibres was determined by fluorescence image analysis. Results For a CBD-FITC concentration of 60 mg/L, a coating fraction of 78% and 110% was estimated for Portucel and Whatman fibres, respectively. For a saturating CBD concentration, using Whatman CF11 fibres, a surface concentration of 25.2 × 10-13 mol/mm2 was estimated, the equivalent to 4 protein monolayers. This result does not imply the existence of several adsorbed protein layers. Conclusion It was verified that CBDs were able to penetrate the fibres, according to confocal microscopy and TEM-immunolabelling analysis. The surface concentration of adsorbed CBDs was greater on amorphous fibres (phosphoric acid swollen) than on more crystalline ones (Whatman CF11 and Sigmacell 20).
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Affiliation(s)
- Ricardo Pinto
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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Albrecht K, Bernkop-Schnürch A. Thiomers: forms, functions and applications to nanomedicine. Nanomedicine (Lond) 2007; 2:41-50. [PMID: 17716189 DOI: 10.2217/17435889.2.1.41] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Thiolated polymers or designated thiomers are gained by immobilization of sulhydryl-bearing ligands on the polymeric backbone of well established polymers, such as chitosan and poly(acrylates). This functionalization leads to significantly improved properties compared with the corresponding unmodified polymers. Mucoadhesive properties are strongly improved by the formation of disulfide bonds between thiol groups of the thiomer and cysteine-rich glycoproteins of the mucus gel layer. Moreover, enzyme- and efflux-pump inhibiting, as well as significantly improved permeation-enhancing properties, are advantages of polymer thiolization. Thiomer micro- and nano-particlulate delivery systems can be generated via different techniques, such as in situ gelation and subsequent covalent crosslinking, radical emulsion polymerization, emulsification/solvent evaporation or air jet milling. As thiomer micro- and nano-particles were shown to exhibit the same features as thiolated polymers per se, they might be useful tools for the delivery of various types of challenging drugs.
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Affiliation(s)
- Karin Albrecht
- Leopold-Franzens-University Innsbruck, Institute of Pharmacy, Josef-Möller-Haus, Innrain 52, 6020 Innsbruck, Austria
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Enhancement of poly(ethylene glycol) mucoadsorption by biomimetic end group functionalization. Biointerphases 2006; 1:134-41. [DOI: 10.1116/1.2422894] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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