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Chamsai B, Opanasopit P, Samprasit W. Fast disintegrating dosage forms of mucoadhesive-based nanoparticles for oral insulin delivery: Optimization to in vivo evaluation. Int J Pharm 2023; 647:123513. [PMID: 37839494 DOI: 10.1016/j.ijpharm.2023.123513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 09/26/2023] [Accepted: 10/13/2023] [Indexed: 10/17/2023]
Abstract
The aim of this work was to develop fast disintegrating dosage forms, including fast disintegrating tablets (FDTs) and films (FDFs), for oral insulin delivery incorporating mucoadhesive thiolated chitosan (TCS)-based nanoparticles (NPs). Cyclodextrin (CD)-insulin complexes were formed to prevent insulin from degradation and further optimally prepared NPs in order to improve the mucoadhesive properties. After that, these NPs were incorporated into the dosage forms and then evaluated for their morphology as well as physical and mechanical properties. The disintegration time, insulin content, mucoadhesive properties, insulin release, cytotoxicity, in vivo hypoglycemic effect, and stability of dosage forms were studied. Results showed that the CD-insulin complexes were successfully encapsulated into the mucoadhesive NPs. The 15 %w/w CD-insulin complex-loaded NPs, which were probably dispersed and/or fused into the dosage forms, showed promising characteristics, including rapid disintegration as well as good physical and mechanical properties to withstand erosion during handling and storage. The porous structure of the FDTs promoted liquid flow and induced rapid disintegration. The dosage forms provided buccal mucoadhesion before, during, and/or after the disintegration. The FDFs containing hydroxypropyl β-cyclodextrin (HPβCD)-insulin complex-loaded NPs increased mucoadhesion, increasing insulin release. Furthermore, these dosage forms provided excellent in vivo hypoglycemic response with a prolonged effect in diabetic mice and had no cytotoxicity toward the gingival fibroblast cells. In addition, they were stable at temperatures between 2 and 8 °C for three months. The results indicate that these formulations could be applied as promising dosage forms for use in oral insulin delivery.
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Affiliation(s)
- Benchawan Chamsai
- Department of Pharmaceutical Technology, College of Pharmacy, Rangsit University, Pathum Thani 12000, Thailand
| | - Praneet Opanasopit
- Department of Industrial Pharmacy, Faculty of Pharmacy, Silpakorn University, Nakhon Pathom 73000, Thailand
| | - Wipada Samprasit
- Department of Pharmaceutical Technology, College of Pharmacy, Rangsit University, Pathum Thani 12000, Thailand.
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Khoshdouni Farahani Z, Mousavi M, Seyedain Ardebili M, Bakhoda H. Production and characterization of Ziziphus jujuba extract-loaded composite whey protein and pea protein beads based on sodium alginate-IFPG (insoluble fraction of Persian gum). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:3674-3684. [PMID: 36799350 DOI: 10.1002/jsfa.12509] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/21/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND This research was aimed at the fabrication of jujube extract (JE)-loaded beads by extrusion, using whey protein isolate (WPI), chickpea protein concentrate (PPC) and a combination of two types of hydrocolloid insoluble fraction of Persian gum (IFPG) and sodium alginate (Al). RESULTS JE-loaded beads with the highest encapsulation efficiency (10.87%) and polyphenol content (120.8 mg L-1 gallic acid) were obtained using Al-IFPG/PPC at 4 °C. The Al-IFPG, Al-IFPG/WPI and Al-IFPG/PPC beads revealed 5.66, 6.85 and 5.76 mm bead size, respectively, and almost all of them demonstrated a homogeneous and spherical structure. Fourier transform infrared spectroscopy data proved that the stable structure of the Al-IFPG beads was due to hydrogen bonding and electrostatic interactions. The thermostability of beads loaded with JE based on Al-IFPG/WPI was significantly enhanced compared to pure Al-IFPG. Texture evaluation of JE-loaded beads based on Al-IFPG incorporation with WPI revealed an increment in the hardness of beads. CONCLUSION This study confirmed the potential of Al-IFPG complex beads for the effective delivery of jujube extract via incorporation into pea and whey proteins and for the expansion of its use in products. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Zahra Khoshdouni Farahani
- Department of Food Science and Technology, Faculty of Agriculture and Food Industry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Mousavi
- Department of Food Science, Engineering and Technology, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Mahdi Seyedain Ardebili
- Department of Food Science and Technology, Faculty of Agriculture and Food Industry, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hossein Bakhoda
- Department of Agricultural Mechanization, Faculty of Agriculture and Food Industry, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Khoshdouni Farahani Z, Mousavi M, Seyedain Ardebili SM, Bakhoda H. Modification of sodium alginate by octenyl succinic anhydride to fabricate beads for encapsulating jujube extract. Curr Res Food Sci 2022; 5:157-166. [PMID: 35072103 PMCID: PMC8761605 DOI: 10.1016/j.crfs.2021.11.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 11/20/2021] [Accepted: 11/23/2021] [Indexed: 10/25/2022] Open
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Wong CYJ, Al-Salami H, Dass CR. β-Cyclodextrin-containing chitosan-oligonucleotide nanoparticles improve insulin bioactivity, gut cellular permeation and glucose consumption. J Pharm Pharmacol 2021; 73:726-739. [PMID: 33769519 DOI: 10.1093/jpp/rgaa052] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 12/08/2020] [Indexed: 01/25/2023]
Abstract
OBJECTIVES The main objective of the present study was to develop a nanoparticulate drug delivery system that can protect insulin against harsh conditions in the gastrointestinal (GI) tract. The effects of the following employed techniques, including lyophilisation, cross-linking and nanoencapsulation, on the physicochemical properties of the formulation were investigated. METHODS We herein developed a nanocarrier via ionotropic gelation by using positively charged chitosan and negatively charged Dz13Scr. The lyophilised nanoparticles with optimal concentrations of tripolyphosphate (cross-linking agent) and β-cyclodextrin (stabilising agent) were characterised by using physical and cellular assays. KEY FINDINGS The addition of cryoprotectants (1% sucrose) in lyophilisation improved the stability of nanoparticles, enhanced the encapsulation efficiency, and ameliorated the pre-mature release of insulin at acidic pH. The developed lyophilised nanoparticles did not display any cytotoxic effects in C2C12 and HT-29 cells. Glucose consumption assays showed that the bioactivity of entrapped insulin was maintained post-incubation in the enzymatic medium. CONCLUSIONS Freeze-drying with appropriate cryoprotectant could conserve the physiochemical properties of the nanoparticles. The bioactivity of the entrapped insulin was maintained. The prepared nanoparticles could facilitate the permeation of insulin across the GI cell line.
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Affiliation(s)
- Chun Yuen Jerry Wong
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley,Australia.,Curtin Health Innovation Research Institute, Bentley,Australia
| | - Hani Al-Salami
- Biotechnology and Drug Development Research Laboratory, School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Bentley,Australia
| | - Crispin R Dass
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley,Australia.,Curtin Health Innovation Research Institute, Bentley,Australia
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Nur M, Vasiljevic T. Insulin Inclusion into a Tragacanth Hydrogel: An Oral Delivery System for Insulin. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E79. [PMID: 29304023 PMCID: PMC5793577 DOI: 10.3390/ma11010079] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/29/2017] [Accepted: 01/03/2018] [Indexed: 12/18/2022]
Abstract
Nanoparticles or microparticles created by physical complexation between two polyelectrolytes may have a prospective use as an excipient for oral insulin administration. Natural polymers such as tragacanth, alginate, dextran, pullulan, hyaluronic acid, gelatin and chitosan can be potential candidates for this purpose. In this research, insulin particles were prepared by the inclusion of insulin into a tragacanth hydrogel. The effect of the pH and concentration relationship involving polyelectrolytes offering individual particle size and zeta potential was assessed by zetasizer and scanning electron microscopy (SEM). Insulin-tragacanth interactions at varying pH (3.7, 4.3, 4.6, or 6), and concentration (0.1%, 0.5%, or 1% w/w) were evaluated by differential scanning calorimetry (DSC) and ATR Fourier transform infrared (ATR-FTIR) analysis. Individual and smaller particles, approximately 800 nm, were acquired at pH 4.6 with 0.5% of tragacanth. The acid gelation test indicated that insulin could be entrapped in the physical hydrogel of tragacanth. DSC thermograms of insulin-tragacanth showed shifts on the same unloaded tragacanth peaks and suggested polyelectrolyte-protein interactions at a pH close to 4.3-4.6. FTIR spectra of tragacanth-insulin complexes exhibited amide absorption bands featuring in the protein spectra and revealed the creation of a new chemical substance.
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Affiliation(s)
- Mokhamad Nur
- Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, PO Box 14428, Melbourne 8001, Australia.
- Department of Agricultural Product Technology, Faculty of Agricultural Technology, Brawijaya University, Jl. Veteran, Malang 65145, Indonesia.
| | - Todor Vasiljevic
- Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, PO Box 14428, Melbourne 8001, Australia.
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Nur M, Vasiljevic T. Can natural polymers assist in delivering insulin orally? Int J Biol Macromol 2017; 103:889-901. [PMID: 28552728 DOI: 10.1016/j.ijbiomac.2017.05.138] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 05/01/2017] [Accepted: 05/23/2017] [Indexed: 02/02/2023]
Abstract
Diabetes mellitus is one of the most grave and lethal non communicable diseases. Insulin is normally used to medicate diabetes. Due to bioavailability issues, the most regular route of administration is through injection, which may pose compliance problems to treatment. The oral administration thus appears as a suitable alternative, but with several important problems. Low stability of insulin in the gastrointestinal tract and low intestinal permeation are some of the issues. Encapsulation of insulin into polymer-based particles emerges as a plausible strategy. Different encapsulation approaches and polymers have been used in this regard. Polymers with different characteristics from natural or synthetic origin have been assessed to attain this goal, with natural polymers being preferable. Natural polymers studied so far include chitosan, alginate, carrageenan, starch, pectin, casein, tragacanth, dextran, carrageenan, gelatine and cyclodextrin. While some promising knowledge and results have been gained, a polymeric-based particle system to deliver insulin orally has not been introduced onto the market yet. In this review, effectiveness of different natural polymer materials developed so far along with fabrication techniques are evaluated.
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Affiliation(s)
- Mokhamad Nur
- Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, PO Box 14428, Melbourne, 8001, Australia; Department of Agricultural Product Technology, Faculty of Agricultural Technology, Brawijaya University, Jl. Veteran, 65145, Malang, Indonesia
| | - Todor Vasiljevic
- Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, PO Box 14428, Melbourne, 8001, Australia.
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Ivancic A, Macaev F, Aksakal F, Boldescu V, Pogrebnoi S, Duca G. Preparation of alginate-chitosan-cyclodextrin micro- and nanoparticles loaded with anti-tuberculosis compounds. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1208-1218. [PMID: 27826495 PMCID: PMC5082317 DOI: 10.3762/bjnano.7.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
This paper describes the synthesis and application of alginate-chitosan-cyclodextrin micro- and nanoparticulate systems loaded with isoniazid (INH) and isoconazole nitrate (ISN) as antimycobacterial compounds. Preparation and morphology of the obtained particles, as well as antimycobacterial activity data of the obtained systems are presented. Docking of isoconazole into the active site of enoyl-acyl carrier protein reductase (InhA) of Mycobacetrium tuberculosis was carried out in order to predict the binding affinity and non-covalent interactions stabilizing the InhA-isoconazole complex. To assess these interactions, frontier molecular orbital calculations were performed for the active site of InhA and isoconazole obtained from docking. Isoconazole was predicted to be an active inhibitor of InhA with the analysis of the molecular docking and electron density distribution. It has been detected that alginate-chitosan-cyclodextrin microparticulate systems loaded with INH and ISN are as effective as pure INH applied in higher dosages.
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Affiliation(s)
- Albert Ivancic
- Laboratory of Organic Synthesis and Biopharmaceutics, Institute of Chemistry of ASM, Academiei 3, MD-2028 Chisinau, Moldova
| | - Fliur Macaev
- Laboratory of Organic Synthesis and Biopharmaceutics, Institute of Chemistry of ASM, Academiei 3, MD-2028 Chisinau, Moldova
| | - Fatma Aksakal
- Department of Chemistry, Faculty of Science, Gebze Technical University, Kocaeli, 41400, Turkey
| | - Veaceslav Boldescu
- Laboratory of Organic Synthesis and Biopharmaceutics, Institute of Chemistry of ASM, Academiei 3, MD-2028 Chisinau, Moldova
| | - Serghei Pogrebnoi
- Laboratory of Organic Synthesis and Biopharmaceutics, Institute of Chemistry of ASM, Academiei 3, MD-2028 Chisinau, Moldova
| | - Gheorghe Duca
- Laboratory of Organic Synthesis and Biopharmaceutics, Institute of Chemistry of ASM, Academiei 3, MD-2028 Chisinau, Moldova
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Maan GK, Bajpai J, Bajpai AK. Investigation of In Vitro Release of Cisplatin from Electrostatically Crosslinked Chitosan-Alginate Nanoparticles. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/15533174.2015.1137012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Gurvindar Kaur Maan
- Bose Memorial Research Lab, Department of Chemistry, Government Autonomous Science College, Jabalpur, India
| | - Jaya Bajpai
- Bose Memorial Research Lab, Department of Chemistry, Government Autonomous Science College, Jabalpur, India
| | - Anil K. Bajpai
- Bose Memorial Research Lab, Department of Chemistry, Government Autonomous Science College, Jabalpur, India
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Aceval Arriola ND, de Medeiros PM, Prudencio ES, Olivera Müller CM, de Mello Castanho Amboni RD. Encapsulation of aqueous leaf extract of Stevia rebaudiana Bertoni with sodium alginate and its impact on phenolic content. FOOD BIOSCI 2016. [DOI: 10.1016/j.fbio.2015.12.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tan L, Li J, Liu Y, Zhou H, Zhang Z, Deng L. Synthesis and characterization of β-cyclodextrin-conjugated alginate hydrogel for controlled release of hydrocortisone acetate in response to mechanical stimulation. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515590494] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Alginate hydrogels are a class of biomaterials that can be used as local release depots for therapeutic agents. A particular drug that can take advantage of alginate hydrogel for controlled release is hydrocortisone acetate. Hydrocortisone acetate is a widely used anti-inflammatory agent, but is limited in application due to poor solubility and lack of controlled delivery. To overcome this limitation, a mechanically responsive β-cyclodextrin-conjugated alginate (Alg-β-CD) hydrogel was synthesized and characterized for enhanced aqueous solubility and controlled release of hydrocortisone acetate. We demonstrated that mono-6-deoxy-6-ethylenediamine-β-cyclodextrin and hydrocortisone acetate formed a 1:1 inclusion complex, thus resulting in marked increase in hydrocortisone acetate solubility, while causing no significant inhibition to the growth of cultured mouse fibroblasts (L929). More importantly, the release of hydrocortisone acetate from the hydrogel system was increasingly sensitive to mechanical compression, and the mechanical responsiveness of hydrocortisone acetate release increased dramatically as the concentration of mono-6-deoxy-6-ethylenediamine-β-cyclodextrin increased from 0% to 46%, whereas the swelling rate and stiffness of the hydrogel decreased as the concentration of mono-6-deoxy-6-ethylenediamine-β-cyclodextrin increased. The mechanical responsiveness of hydrocortisone acetate release was attributable to conformational distortion of mono-6-deoxy-6-ethylenediamine-β-cyclodextrin moieties and deformation of the polymer network. Moreover, we demonstrated that the hydrogel continuously released and accumulated hydrocortisone acetate in the medium when compressed for up to 72 h, which led to increasing suppression of nitric oxide production in the lipopolysaccharide-stimulated mouse macrophages (RAW264.7), indicating desirable anti-inflammatory effect at the cell level. Hence, this hydrogel system may provide a useful platform for drug delivery, such as hydrocortisone acetate release to wound site, by intentionally generated mechanical force.
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Affiliation(s)
- Li Tan
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
- School of Materials Science and Engineering, Changzhou University, Changzhou, China
| | - Jingjing Li
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
| | - Yang Liu
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
| | - Huan Zhou
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
| | - Zhiguo Zhang
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
| | - Linhong Deng
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, China
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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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Sajeesh S, Sharma CP. Novel polyelectrolyte complexes based on poly(methacrylic acid)-bis(2-aminopropyl)poly(ethylene glycol) for oral protein delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 18:1125-39. [DOI: 10.1163/156856207781554082] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S. Sajeesh
- a Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Thiruvanathapuram 695012, India
| | - Chandra P. Sharma
- b Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences & Technology, Thiruvanathapuram 695012, India
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Stojanovic R, Belscak-Cvitanovic A, Manojlovic V, Komes D, Nedovic V, Bugarski B. Encapsulation of thyme (Thymus serpyllum L.) aqueous extract in calcium alginate beads. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:685-696. [PMID: 21953367 DOI: 10.1002/jsfa.4632] [Citation(s) in RCA: 100] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 07/07/2011] [Accepted: 07/28/2011] [Indexed: 05/31/2023]
Abstract
BACKGROUND Encapsulation of Thymus serpyllum L. aqueous extract within calcium alginate beads was studied in order to produce dosage formulations containing polyphenolic compounds. Electrostatic extrusion was applied for encapsulation of thyme aqueous extract in alginate gel beads. In addition to hydrogel beads, heat-dried and freeze-dried forms of beads were examined. METHODS Encapsulation systems were examined and compared in order to choose the optimal one with respect to entrapment efficiency, preservation of antioxidant activity and thermal behaviour under heating conditions simulating the usual food processing. RESULTS The beads obtained with approximately 2 mg g⁻¹ of gallic acid equivalents encapsulated in 0.015 g mL⁻¹ of alginate were spheres of a uniform size of about 730 µm. Encapsulation efficiency varied in the range 50-80% depending on the encapsulation method. Besides, the analysis reveals that the encapsulation process and the material used did not degrade the bioactive compounds, as the total antioxidant content remained unchanged. This was verified by Fourier transform infrared analysis, which proved the absence of chemical interactions between extracted compounds and alginate. Addition of a filler substance, such as sucrose and inulin, in the dried product reduced its collapse and roundness distortion during drying process. CONCLUSION This study demonstrates the potential of using hydrogel material for encapsulation of plant poplyphenols to improve their functionality and stability in food products.
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Affiliation(s)
- Radoslava Stojanovic
- Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia
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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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Abstract
Oral insulin is an exciting area of research and development in the field of diabetology. This brief review covers the various approaches used in the development of oral insulin, and highlights some of the recent data related to novel oral insulin preparation.
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Yim Z, Tiong C, Mansa R, Ravindra P, Chan E. Release Kinetics of Encapsulated Herbal Antioxidants during Gelation Process. ACTA ACUST UNITED AC 2010. [DOI: 10.3923/jas.2010.2668.2672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chan ES, Yim ZH, Phan SH, Mansa RF, Ravindra P. Encapsulation of herbal aqueous extract through absorption with ca-alginate hydrogel beads. FOOD AND BIOPRODUCTS PROCESSING 2010. [DOI: 10.1016/j.fbp.2009.09.005] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zhang N, Li J, Jiang W, Ren C, Li J, Xin J, Li K. Effective protection and controlled release of insulin by cationic beta-cyclodextrin polymers from alginate/chitosan nanoparticles. Int J Pharm 2010; 393:212-8. [PMID: 20394813 DOI: 10.1016/j.ijpharm.2010.04.006] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 03/31/2010] [Accepted: 04/07/2010] [Indexed: 11/24/2022]
Abstract
In an alginate/chitosan nanoparticle system, insulin was protected by forming complexes with cationic beta-cyclodextrin polymers (CPbetaCDs), which were synthesized from beta-cyclodextrin (beta-CD), epichlorohydrin (EP) and choline chloride (CC) through a one-step polycondensation. Due to the electrostatic attraction between insulin and CPbetaCDs, as well as the assistance of its polymeric chains, CPbetaCDs could effectively protect insulin under simulated gastrointestinal conditions. The nanoparticles have their mean size lower than 350 nm and can load insulin with the association efficiency (AE) up to 87%. It is notable that the cumulative insulin release in simulated intestinal fluid was significantly higher (40%) than that without CPbetaCDs (18%) because insulin was mainly retained in the core of the nanoparticles and well protected against degradation in simulated gastric fluid. Far-UV circular dichroism analysis also corroborated the preservation of insulin structure during the nanoparticle preparation and release process.
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Affiliation(s)
- Nan Zhang
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China
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Abstract
Oral insulin is one of the most exciting areas of development in the treatment of diabetes because of its potential benefit in patient convenience, rapid insulinization of liver, adequate insulin delivery avoiding peripheral hyperinsulinaemia while potentially avoiding adverse effects of weight gain and hypoglycaemia. Growing evidence that earlier initiation of intensive insulin therapy produces sustained tight glycaemic control resulting in substantial delay in complications makes an effective oral insulin product even more vital for the management of patients with diabetes. Despite knowledge of this unmet medical need, oral delivery of insulin has been unsuccessful because of several barriers. For several decades, researchers have tried to develop oral insulin using various technologies without much clinical or commercial success. This review summarizes the development status of oral insulins which are publicly reported to be undergoing clinical studies. Currently, two oral insulin products are in an advanced stage of clinical development and first data from long-term therapy are expected to be available in the second half of 2010.
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Affiliation(s)
- Harish Iyer
- R&D, Biocon Limited, Bangalore, Karnataka, India.
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Huang L, Xin J, Guo Y, Li J. A novel insulin oral delivery system assisted by cationic β-cyclodextrin polymers. J Appl Polym Sci 2009. [DOI: 10.1002/app.30775] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Zhang X, Wu Z, Gao X, Shu S, Zhang H, Wang Z, Li C. Chitosan bearing pendant cyclodextrin as a carrier for controlled protein release. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.01.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Zhang L, Jiang H, Zhu W, Wu L, Song L, Wu Q, Ren Y. Improving the stability of insulin in solutions containing intestinal proteases in vitro. Int J Mol Sci 2008; 9:2376-2387. [PMID: 19330082 PMCID: PMC2635643 DOI: 10.3390/ijms9122376] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2008] [Revised: 11/01/2008] [Accepted: 11/28/2008] [Indexed: 11/25/2022] Open
Abstract
Degradation of insulin was studied in this work. Casein and protamine could obviously suppress degradation of insulin by intestinal enzymes, and could protect insulin from degradation by the mechanism of competition and combination with proteolysis enzyme. What is more, co-incubated with HP-β-CD-casein or HP-β-CD-protamine, most insulin was protected from degradation by intestinal enzymes. In addition, it was found that the complexation of insulin with HP-β-CD was characterized by UV absorption spectra. These results indicated that HP-β-CD, casein and protamine could offer some positive and useful results, and could protect insulin from degradation during their transit through the intestinal tract.
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Affiliation(s)
| | | | | | | | | | | | - Yong Ren
- * Author to whom correspondence should be addressed; E-Mail:
; Tel. +86-25-8589-1591; Fax: +86-25-8589-1591
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Gere‐Pászti E, Cserháti T, Forgács E, Deyl Z, Miksik I, Eckhardt A, Illés Z. Interaction of Hydroxypropyl‐β‐Cyclodextrin with Peptides, Studied by Reversed‐Phase Thin‐Layer Chromatography. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070500189877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- E. Gere‐Pászti
- a Research Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences , Budapest, Hungary
| | - T. Cserháti
- a Research Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences , Budapest, Hungary
| | - E. Forgács
- a Research Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences , Budapest, Hungary
| | - Z. Deyl
- b Institute of Physiology, Czech Academy of Sciences , Prague
- c Czech Republic and Central European University , Budapest, Hungary
| | - I. Miksik
- b Institute of Physiology, Czech Academy of Sciences , Prague
- c Czech Republic and Central European University , Budapest, Hungary
| | - A. Eckhardt
- b Institute of Physiology, Czech Academy of Sciences , Prague
- c Czech Republic and Central European University , Budapest, Hungary
| | - Z. Illés
- b Institute of Physiology, Czech Academy of Sciences , Prague
- c Czech Republic and Central European University , Budapest, Hungary
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Sajeesh S, Sharma CP. Cyclodextrin-insulin complex encapsulated polymethacrylic acid based nanoparticles for oral insulin delivery. Int J Pharm 2006; 325:147-54. [PMID: 16859846 DOI: 10.1016/j.ijpharm.2006.06.019] [Citation(s) in RCA: 155] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Revised: 05/17/2006] [Accepted: 06/15/2006] [Indexed: 12/01/2022]
Abstract
Present investigation was aimed at developing an oral insulin delivery system based on hydroxypropyl beta cyclodextrin-insulin (HPbetaCD-I) complex encapsulated polymethacrylic acid-chitosan-polyether (polyethylene glycol-polypropylene glycol copolymer) (PMCP) nanoparticles. Nanoparticles were prepared by the free radical polymerization of methacrylic acid in presence of chitosan and polyether in a solvent/surfactant free medium. Dynamic light scattering (DLS) experiment was conducted with particles dispersed in phosphate buffer (pH 7.4) and size distribution curve was observed in the range of 500-800 nm. HPbetaCD was used to prepare non-covalent inclusion complex with insulin and complex was analyzed by Fourier transform infrared (FTIR) and fluorescence spectroscopic studies. HPbetaCD complexed insulin was encapsulated into PMCP nanoparticles by diffusion filling method and their in vitro release profile was evaluated at acidic/alkaline pH. PMCP nanoparticles displayed good insulin encapsulation efficiency and release profile was largely dependent on the pH of the medium. Enzyme linked immunosorbent assay (ELISA) study demonstrated that insulin encapsulated inside the particles was biologically active. Trypsin inhibitory effect of PMCP nanoparticles was evaluated using N-alpha-benzoyl-L-arginine ethyl ester (BAEE) and casein as substrates. Mucoadhesive studies of PMCP nanoparticles were conducted using freshly excised rat intestinal mucosa and the particles were found fairly adhesive. From the preliminary studies, cyclodextrin complexed insulin encapsulated mucoadhesive nanoparticles appear to be a good candidate for oral insulin delivery.
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Affiliation(s)
- S Sajeesh
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram 695012, Kerala, India
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Silva CM, Ribeiro AJ, Figueiredo IV, Gonçalves AR, Veiga F. Alginate microspheres prepared by internal gelation: Development and effect on insulin stability. Int J Pharm 2006; 311:1-10. [PMID: 16442757 DOI: 10.1016/j.ijpharm.2005.10.050] [Citation(s) in RCA: 135] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2005] [Revised: 10/11/2005] [Accepted: 10/15/2005] [Indexed: 10/25/2022]
Abstract
Recombinant human insulin was encapsulated within alginate microspheres by the emulsification/internal gelation technique with the objective of preserving protein stability during encapsulation procedure. The influence of process and formulation parameters was evaluated on the morphology and encapsulation efficiency of insulin. The in vitro release of insulin from microspheres was studied under simulated gastrointestinal conditions and the in vivo activity of protein after processing was assessed by subcutaneous administration of extracted insulin from microspheres to streptozotocin-induced diabetic rats. Microspheres mean diameter, ranging from 21 to 287 microm, decreased with the internal phase ratio, emulsifier concentration, mixer rotational speed and increased with alginate concentration. Insulin encapsulation efficiency, near 75%, was not affected by emulsifier concentration, mixer rotational speed and zinc/insulin hexamer molar ratio but decreased either by increasing internal phase ratio and calcium/alginate mass ratio or by decreasing acid/calcium molar ratio and alginate concentration. A high insulin release, above 75%, was obtained at pH 1.2 and under simulated intestinal pH a complete dissolution of microspheres occurred. Extracted insulin from microspheres decreased hyperglycemia of diabetic rats proving to be bioactive and showing that encapsulation in alginate microspheres using the emulsification/internal gelation is an appropriate method for protein encapsulation.
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Affiliation(s)
- Catarina M Silva
- Laboratório de Tecnologia Farmacêutica, Faculdade de Farmácia, Universidade de Coimbra, Rua do Norte, 3000-295 Coimbra, Portugal.
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Chen H, Ouyang W, Lawuyi B, Martoni C, Prakash S. Reaction of chitosan with genipin and its fluorogenic attributes for potential microcapsule membrane characterization. J Biomed Mater Res A 2005; 75:917-27. [PMID: 16118788 DOI: 10.1002/jbm.a.30492] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This study investigates the fluorogenic characteristics of the chitosan-genipin reaction for applications in microencapsulation research. Results showed that the chitosan-genipin reaction generated a colored and fluorescent product, with optimal excitation and emission wavelengths at 369 and 470 nm, respectively. Furthermore, it was found that reaction conditions affected the fluorescence intensity of the product. Mixture at the ratio of 4:1 (chitosan: genipin by weight) fluoresced the most. It also fluoresced stronger if the reaction occurred at higher temperature, with the intensity of 10.4 x 10(5) CPS at 37 degrees C, 5.9 x 10(5) CPS at 20 degrees C, and 2.5 x 10(5) CPS at 4 degrees C. As well, the fluorescence of the mixture developed gradually over time, attaining the emission maxima of 2.9 x 10(5), 7.6 x 10(5), and 10.0 x 10(5) CPS in 1, 6, and 18 h, respectively. Chitosan-coated alginate microcapsules were prepared without prior labeling, to which subsequent genipin treatment was applied in order to examine the potential of using genipin in microcapsule characterization. Chitosan bound to the alginate beads interacted with genipin, from which the resultant fluorescent signals allowed for clear visualization of the chitosan coating under confocal laser scanning microscopy. The relative fluorescence intensity across the chitosan membrane was found to be considerably higher than the controls (175 vs. 50). The membrane thickness measured was 29.2 +/- 7.3 microm. These findings demonstrate a convenient and effective way of characterizing chitosan-based microcapsules using genipin as a fluorogenic marker, a technique that will be useful in microcapsule research and other biomedical applications.
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Affiliation(s)
- Hongmei Chen
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering and Artificial Cells and Organs Research Centre, Faculty of Medicine, McGill University, 3775 University Street, Montreal, Quebec H3A 2B4, Canada
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28
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Bajpai AK, Bhanu S. In vitro release modulation of hemoglobin from a ternary polymeric delivery vehicle. J Appl Polym Sci 2002. [DOI: 10.1002/app.10661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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