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Safdar R, Thanabalan M. Developments in insulin delivery and potential of chitosan for controlled release application: A review. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Oral delivery of insulin with intelligent glucose-responsive switch for blood glucose regulation. J Nanobiotechnology 2020; 18:96. [PMID: 32664978 PMCID: PMC7362448 DOI: 10.1186/s12951-020-00652-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 07/07/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The traditional treatment for diabetes usually requires frequent insulin injections to maintain normoglycemia, which is painful and difficult to achieve blood glucose control. RESULTS To solve these problems, a non-invasive and painless oral delivery nanoparticle system with bioadhesive ability was developed by amphipathic 2-nitroimidazole-L-cysteine-alginate (NI-CYS-ALG) conjugates. Moreover, in order to enhance blood glucose regulation, an intelligent glucose-responsive switch in this nanoparticle system was achieved by loading with insulin and glucose oxidase (GOx) which could supply a stimulus-sensitive turnover strategy. In vitro tests illustrated that the insulin release behavior was switched "ON" in response to hyperglycemic state by GOx catalysis and "OFF" by normal glucose levels. Moreover, in vivo tests on type I diabetic rats, this system displayed a significant hypoglycemic effect, avoiding hyperglycemia and maintaining a normal range for up to 14 h after oral administration. CONCLUSION The stimulus-sensitive turnover strategy with bioadhesive oral delivery mode indicates a potential for the development of synthetic GR-NPs for diabetes therapy, which may provide a rational design of proteins, low molecular drugs, as well as nucleic acids, for intelligent releasing via the oral route.
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Andreani T, Miziara L, Lorenzón EN, de Souza ALR, Kiill CP, Fangueiro JF, Garcia ML, Gremião PD, Silva AM, Souto EB. Effect of mucoadhesive polymers on the in vitro performance of insulin-loaded silica nanoparticles: Interactions with mucin and biomembrane models. Eur J Pharm Biopharm 2015; 93:118-26. [PMID: 25843239 DOI: 10.1016/j.ejpb.2015.03.027] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Revised: 03/23/2015] [Accepted: 03/26/2015] [Indexed: 01/26/2023]
Abstract
The present paper focuses on the development and characterization of silica nanoparticles (SiNP) coated with hydrophilic polymers as mucoadhesive carriers for oral administration of insulin. SiNP were prepared by sol-gel technology under mild conditions and coated with different hydrophilic polymers, namely, chitosan, sodium alginate or poly(ethylene glycol) (PEG) with low and high molecular weight (PEG 6000 and PEG 20000) to increase the residence time at intestinal mucosa. The mean size and size distribution, association efficiency, insulin structure and insulin thermal denaturation have been determined. The mean nanoparticle diameter ranged from 289 nm to 625 nm with a PI between 0.251 and 0.580. The insulin association efficiency in SiNP was recorded above 70%. After coating, the association efficiency of insulin increased up to 90%, showing the high affinity of the protein to the hydrophilic polymer chains. Circular dichroism (CD) indicated that no conformation changes of insulin structure occurred after loading the peptide into SiNP. Nano-differential scanning calorimetry (nDSC) showed that SiNP shifted the insulin endothermic peak to higher temperatures. The influence of coating on the interaction of nanoparticles with dipalmitoylphosphatidylcholine (DPPC) biomembrane models was also evaluated by nDSC. The increase of ΔH values suggested a strong association of non-coated SiNP and those PEGylated nanoparticles coated with DPPC polar heads by forming hydrogen bonds and/or by electrostatic interaction. The mucoadhesive properties of nanoparticles were examined by studying the interaction with mucin in aqueous solution. SiNP coated with alginate or chitosan showed high contact with mucin. On the other hand, non-coated SiNP and PEGylated SiNP showed lower interaction with mucin, indicating that these nanoparticles can interdiffuse across mucus network. The results of the present work provide valuable data in assessing the in vitro performance of insulin-loaded SiNP coated with mucoadhesive polymers.
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Affiliation(s)
- Tatiana Andreani
- Department of Biology and Environment, University of Tras-os Montes e Alto Douro, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal; Centre for Research and Technology of Agro-Environmental and Biological Sciences, CITAB, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal
| | - Leonardo Miziara
- Department of Pharmaceutical Sciences, UNESP-Universidade Estadual Paulista, Rodovia Araraquara-Jau, Km. 01, Araraquara, São Paulo, Brazil
| | - Esteban N Lorenzón
- Department of Biochemistry and Chemical Technology, Institute of Chemistry, UNESP, Araraquara, São Paulo, Brazil
| | - Ana Luiza R de Souza
- Department of Pharmaceutical Sciences, UNESP-Universidade Estadual Paulista, Rodovia Araraquara-Jau, Km. 01, Araraquara, São Paulo, Brazil
| | - Charlene P Kiill
- Department of Pharmaceutical Sciences, UNESP-Universidade Estadual Paulista, Rodovia Araraquara-Jau, Km. 01, Araraquara, São Paulo, Brazil
| | - Joana F Fangueiro
- Research Centre for Biomedicine (CEBIMED), Fernando Pessoa University (UFP), Praça 9 de Abril, 349, P-4249-004 Porto, Portugal
| | - Maria L Garcia
- Department of Physical Chemistry, Faculty of Pharmacy, Barcelona University, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Palmira D Gremião
- Department of Pharmaceutical Sciences, UNESP-Universidade Estadual Paulista, Rodovia Araraquara-Jau, Km. 01, Araraquara, São Paulo, Brazil
| | - Amélia M Silva
- Department of Biology and Environment, University of Tras-os Montes e Alto Douro, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal; Centre for Research and Technology of Agro-Environmental and Biological Sciences, CITAB, UTAD, Quinta de Prados, P-5001-801 Vila Real, Portugal
| | - Eliana B Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra (FFUC), Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Center for Neuroscience and Cell Biology & Institute for Biomedical Imaging and Life Sciences (CNC-IBILI), University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
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Phadke KV, Manjeshwar LS, Aminabhavi TM. Microspheres of Gelatin and Poly(ethylene glycol) Coated with Ethyl Cellulose for Controlled Release of Metronidazole. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404052q] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keerti V. Phadke
- Department
of Chemistry, Karnatak University, Dharwad, 580 003, Karnataka, India
| | - Lata S. Manjeshwar
- Department
of Chemistry, Karnatak University, Dharwad, 580 003, Karnataka, India
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Rekha MR, Sharma CP. Oral delivery of therapeutic protein/peptide for diabetes--future perspectives. Int J Pharm 2012; 440:48-62. [PMID: 22503954 DOI: 10.1016/j.ijpharm.2012.03.056] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 03/19/2012] [Accepted: 03/23/2012] [Indexed: 01/12/2023]
Abstract
Diabetes is a metabolic disease and is a major cause of mortality and morbidity in epidemic proportions. A type I diabetic patient is dependent on daily injections of insulin, for survival and also to maintain a normal life, which is uncomfortable, painful and also has deleterious effects. Extensive efforts are being made worldwide for developing noninvasive drug delivery systems, especially via oral route. Oral route is the most widely accepted means of administration. However it is not feasible for direct delivery of peptide and protein drugs. To overcome the gastro-intestinal barriers various types of formulations such as polymeric micro/nanoparticles, liposomes, etc. are investigated. In the recent years lot of advances have taken place in developing and understanding the oral peptide delivery systems. Simultaneously, the development and usage of other peptides having anti-diabetic potentials are also considered for diabetes therapy. In this review we are focusing on the advances reported during the past decade in the field of oral insulin delivery along with the possibility of other peptidic incretin hormones such as GLP-1, exendin-4, for diabetes therapy.
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Affiliation(s)
- M R Rekha
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram 695012, Kerala, India
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Shelma R, Sharma CP. Acyl modified chitosan derivatives for oral delivery of insulin and curcumin. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:2133-2140. [PMID: 20376537 DOI: 10.1007/s10856-010-4073-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Accepted: 03/22/2010] [Indexed: 05/29/2023]
Abstract
In the present investigation, bioadhesive property of chitosan (CS) was enhanced by the N-acylation with hexanoyl, lauroyl and oleoyl chlorides. The chemical structure of the modified polymer was characterized by FTIR and zeta potential measurements. The swelling ability was evaluated at alkaline pH. Mucin interactions and mucoadhesion experiments were performed under in vitro experimental conditions. Cytotoxicity experiments were employed to confirm the applicability of these particles as drug carriers. Finally in vitro evaluation of hydrophobic and hydrophilic drug release profile at acidic and alkaline pH was also conducted. A strong interaction between CS acyl derivatives and mucin was detected, which was further confirmed by an in situ mucoadhesion experiments with excised intestinal tissue. CS modified with oleoyl chloride showed better mucoadhesion property, as compared to the one modified with lower fatty acid groups. CS derivatives were found non-toxic on L-929 cell lines and provided sustained release of hydrophobic drugs under in vitro experimental conditions. From these studies it seems that hydrophobically modified CS is an interesting system for drug delivery applications.
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Affiliation(s)
- R Shelma
- Division of Biosurface Technology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram 695012, India
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