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Ayala-Fuentes JC, Soleimani M, Magaña JJ, Gonzalez-Meljem JM, Chavez-Santoscoy RA. Novel Hybrid Inulin-Soy Protein Nanoparticles Simultaneously Loaded with (-)-Epicatechin and Quercetin and Their In Vitro Evaluation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13101615. [PMID: 37242034 DOI: 10.3390/nano13101615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 04/29/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023]
Abstract
(-)-Epicatechin and quercetin have attracted considerable attention for their potential therapeutic application in non-communicable chronic diseases. A novel hybrid inulin-soy protein nanoparticle formulation was simultaneously loaded with (-)-epicatechin and quercetin (NEQs) to improve the bioavailability of these flavonoids in the human body, and NEQs were synthesized by spray drying. After process optimization, the physicochemical and functional properties of NEQs were characterized including in vitro release, in vitro gastrointestinal digestion, and cell viability assays. Results showed that NEQs are an average size of 280.17 ± 13.42 nm and have a zeta potential of -18.267 ± 0.83 mV in the organic phase. Encapsulation efficiency of (-)-epicatechin and quercetin reached 97.04 ± 0.01 and 92.05 ± 1.95%, respectively. A 3.5% soy protein content conferred controlled release characteristics to the delivery system. Furthermore, NEQs presented inhibitory effects in Caco-2, but not in HepG-2 and HDFa cell lines. These results contribute to the design and fabrication of inulin-soy protein nanoparticles for improving the bioavailability of multiple bioactive compounds with beneficial properties.
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Affiliation(s)
- Jocelyn C Ayala-Fuentes
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Monterrey, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Maryam Soleimani
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Monterrey, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
| | - Jonathan Javier Magaña
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Mexico City 14380, Mexico
- Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City 14389, Mexico
| | | | - Rocio Alejandra Chavez-Santoscoy
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Monterrey, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico
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Ayala-Fuentes JC, Gallegos-Granados MZ, Villarreal-Gómez LJ, Antunes-Ricardo M, Grande D, Chavez-Santoscoy RA. Optimization of the Synthesis of Natural Polymeric Nanoparticles of Inulin Loaded with Quercetin: Characterization and Cytotoxicity Effect. Pharmaceutics 2022; 14:pharmaceutics14050888. [PMID: 35631474 PMCID: PMC9147723 DOI: 10.3390/pharmaceutics14050888] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/04/2022] [Accepted: 04/07/2022] [Indexed: 02/01/2023] Open
Abstract
Quercetin is a bioactive component that is capable of having therapeutic potential in the prevention of different noncommunicable chronic diseases (NCDs). However, it presents instability in the gastrointestinal tract in addition to low bioavailability. One way to overcome the limitations of quercetin lies in using nanotechnology for the development of nanoparticles, based on biopolymers, that are capable of being ingestible. Inulin, a fructan-type polysaccharide, acts as a delivery system for the release of quercetin in a target cell, guaranteeing the stability of the molecule. Inulin-coated quercetin nanoparticles were synthesized by the spray dryer method, and four variables were evaluated, namely inulin concentration (5–10% w/v), feed temperature (40–60 °C), inlet temperature (100–200 °C) and outlet temperature (60–100 °C). The optimal conditions were obtained at 10% w/v inulin concentration, with 45 °C feed temperature, 120 °C inlet temperature and 60 °C outlet temperature, and the nanoparticle size was 289.75 ± 16.3 nm in water. Fluorescence microscopy indicated quercetin loading in the inulin nanoparticles, with an encapsulation efficiency of approximately 73.33 ± 7.86%. Inulin-coated quercetin nanoparticles presented effects of inhibition in Caco-2 and HepG2 cells, but not in HDFa cells. The experimental data showed the potential of inulin nanoparticles as transport materials for unstable molecules, in oral administration systems, for the encapsulation, protection and release of quercetin.
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Affiliation(s)
- Jocelyn C. Ayala-Fuentes
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico;
| | - Melissa Zulahi Gallegos-Granados
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22260, Mexico; (M.Z.G.-G.); (L.J.V.-G.)
| | - Luis Jesús Villarreal-Gómez
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana 22260, Mexico; (M.Z.G.-G.); (L.J.V.-G.)
- Facultad de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Tijuana 22260, Mexico
| | - Marilena Antunes-Ricardo
- Tecnologico de Monterrey, The Institute for Obesity Research, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico;
| | - Daniel Grande
- Univ Est Creteil, CNRS, Institut de Chimie et des Matériaux Paris-Est (ICMPE), 2, rue Henri Du-nant, 94320 Thiais, France;
| | - Rocio Alejandra Chavez-Santoscoy
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501 Sur, Monterrey 64849, Mexico;
- Correspondence:
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Afinjuomo F, Abdella S, Youssef SH, Song Y, Garg S. Inulin and Its Application in Drug Delivery. Pharmaceuticals (Basel) 2021; 14:ph14090855. [PMID: 34577554 PMCID: PMC8468356 DOI: 10.3390/ph14090855] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023] Open
Abstract
Inulin’s unique and flexible structure, stabilization/protective effects, and organ targeting ability make it an excellent drug delivery carrier compared to other biodegradable polysaccharides. The three hydroxyl groups attached to each fructose unit serve as an anchor for chemical modification. This, in turn, helps in increasing bioavailability, improving cellular uptake, and achieving targeted, sustained, and controlled release of drugs and biomolecules. This review focuses on the various types of inulin drug delivery systems such as hydrogel, conjugates, nanoparticles, microparticles, micelles, liposomes, complexes, prodrugs, and solid dispersion. The preparation and applications of the different inulin drug delivery systems are further discussed. This work highlights the fact that modification of inulin allows the use of this polymer as multifunctional scaffolds for different drug delivery systems.
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Affiliation(s)
| | | | | | | | - Sanjay Garg
- Correspondence: ; Tel.: +61-88-302-1575; Fax: +61-88-302-2389
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Hufnagel B, Muellner V, Hlatky K, Tallian C, Vielnascher R, Guebitz GM, Wirth M, Gabor F. Chemically modified inulin for intestinal drug delivery - A new dual bioactivity concept for inflammatory bowel disease treatment. Carbohydr Polym 2021; 252:117091. [PMID: 33183582 DOI: 10.1016/j.carbpol.2020.117091] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 10/23/2022]
Abstract
This study investigates a novel preparation technique for pellets made from acetylated inulin and their characterization focusing on specific intestinal delivery of 5-aminosalicylic acid. By means of acetylation the hydrophobicity of four native inulins was increased yielding materials with selected degrees of acetylation. The acetylated inulins were insoluble in water, which was confirmed by the log P-values ranging from 1.30 to 1.58. 5-Aminosalicylic acid loading capacity of the pellets was up to 60 % and high enough to match the therapeutic range of the anti-inflammatory drug. Depending on the 5-aminosalicylic acid content and the type of acetylated inulin, up to 80 % of the entrapped drug was released within 24 h in intestinal environment under in-vitro conditions. Here we successfully prepared chemically modified and profoundly characterized inulin to provide innovative formulations and to open up a promising new strategy for treatment of Morbus Crohn and ulcerative colitis.
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Affiliation(s)
- Barbara Hufnagel
- Department of Pharmaceutical Technology and Biopharmaceutics, Vienna University Althanstrasse 14 A-1090 Wien, Austria.
| | - Verena Muellner
- Department of Pharmaceutical Technology and Biopharmaceutics, Vienna University Althanstrasse 14 A-1090 Wien, Austria.
| | - Katharina Hlatky
- Department of Pharmaceutical Technology and Biopharmaceutics, Vienna University Althanstrasse 14 A-1090 Wien, Austria.
| | - Claudia Tallian
- Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 20 3430 Tulln an der Donau, Austria.
| | - Robert Vielnascher
- Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 20 3430 Tulln an der Donau, Austria.
| | - Georg M Guebitz
- Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Straße 20 3430 Tulln an der Donau, Austria.
| | - Michael Wirth
- Department of Pharmaceutical Technology and Biopharmaceutics, Vienna University Althanstrasse 14 A-1090 Wien, Austria.
| | - Franz Gabor
- Department of Pharmaceutical Technology and Biopharmaceutics, Vienna University Althanstrasse 14 A-1090 Wien, Austria.
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Afinjuomo F, Fouladian P, Barclay TG, Song Y, Petrovsky N, Garg S. Influence of Oxidation Degree on the Physicochemical Properties of Oxidized Inulin. Polymers (Basel) 2020; 12:polym12051025. [PMID: 32369991 PMCID: PMC7284776 DOI: 10.3390/polym12051025] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/17/2020] [Accepted: 04/26/2020] [Indexed: 12/27/2022] Open
Abstract
This paper reports the oxidation of inulin using varying ratios of sodium periodate and the characterization of the inulin polyaldehyde. The physicochemical properties of the inulin polyaldehyde (oxidized inulin) were characterized using different techniques including 1D NMR spectroscopy, 13C Nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetric (DSC), ultraviolet-visible spectroscopy (UV), and scanning electron microscopy (SEM). The aldehyde peak was not very visible in the FTIR, because the aldehyde functional group exists in a masked form (hemiacetal). The thermal stability of the oxidized inulin decreased with the increasing oxidation degree. The smooth spherical shape of raw inulin was destructed due to the oxidation, as confirmed by the SEM result. The 1HNMR results show some new peaks from 4.8 to 5.0 as well as around 5.63 ppm. However, no aldehyde peak was found around 9.7 ppm. This can be attributed to the hemiacetal. The reaction of oxidized inulin with tert-butyl carbazate produced a carbazone conjugate. There was clear evidence of decreased peak intensity for the proton belonging to the hemiacetal group. This clearly shows that not all of the hemiacetal group can be reverted by carbazate. In conclusion, this work provides vital information as regards changes in the physicochemical properties of the oxidized inulin, which has direct implications when considering the further utilization of this biomaterial.
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Affiliation(s)
- Franklin Afinjuomo
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Paris Fouladian
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Thomas G. Barclay
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Yunmei Song
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
| | - Nikolai Petrovsky
- Vaxine Pty. Ltd., Adelaide 5042, Australia;
- Department of Endocrinology, Flinders University, Adelaide 5042, Australia
| | - Sanjay Garg
- Pharmaceutical Innovation and Development Group, University of South Australia, Adelaide 5000, Australia; (F.A.); (P.F.); (T.G.B.); (Y.S.)
- Correspondence: ; Tel.: +61-8-8302-1567
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Miramontes-Corona C, Escalante A, Delgado E, Corona-González RI, Vázquez-Torres H, Toriz G. Hydrophobic agave fructans for sustained drug delivery to the human colon. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2019.104396] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Seifert A, Kashi Y, Livney YD. Delivery to the gut microbiota: A rapidly proliferating research field. Adv Colloid Interface Sci 2019; 274:102038. [PMID: 31683191 DOI: 10.1016/j.cis.2019.102038] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 09/18/2019] [Accepted: 09/19/2019] [Indexed: 12/17/2022]
Abstract
The post genomic era has brought breakthroughs in our understanding of the complex and fascinating symbiosis we have with our co-evolving microbiota, and its dramatic impact on our physiology, physical and mental health, mood, interpersonal communication, and more. This fast "proliferating" knowledge, particularly related to the gut microbiota, is leading to the development of numerous technologies aimed to promote our health via prudent modulation of our gut microbiota. This review embarks on a journey through the gastrointestinal tract from a biomaterial science and engineering perspective, and focusses on the various state-of-the-art approaches proposed in research institutes and those already used in various industries and clinics, for delivery to the gut microbiota, with emphasis on the latest developments published within the last 5 years. Current and possible future trends are discussed. It seems that future development will progress toward more personalized solutions, combining high throughput diagnostic omic methods, and precision interventions.
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Affiliation(s)
- Adi Seifert
- Biotechnology & Food Engineering Department, Technion, Israel Institute of Technology, Haifa 3200003, Israel
| | - Yechezkel Kashi
- Biotechnology & Food Engineering Department, Technion, Israel Institute of Technology, Haifa 3200003, Israel
| | - Yoav D Livney
- Biotechnology & Food Engineering Department, Technion, Israel Institute of Technology, Haifa 3200003, Israel.
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Afinjuomo F, Fouladian P, Parikh A, Barclay TG, Song Y, Garg S. Preparation and Characterization of Oxidized Inulin Hydrogel for Controlled Drug Delivery. Pharmaceutics 2019; 11:E356. [PMID: 31336580 PMCID: PMC6680939 DOI: 10.3390/pharmaceutics11070356] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 02/07/2023] Open
Abstract
Inulin-based hydrogels are useful carriers for the delivery of drugs in the colon-targeted system and in other biomedical applications. In this project, inulin hydrogels were fabricated by crosslinking oxidized inulin with adipic acid dihydrazide (AAD) without the use of a catalyst or initiator. The physicochemical properties of the obtained hydrogels were further characterized using different techniques, such as swelling experiments, in vitro drug release, degradation, and biocompatibility tests. The crosslinking was confirmed with Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC). In vitro releases of 5-fluorouracil (5FU) from the various inulin hydrogels was enhanced in acidic conditions (pH 5) compared with physiological pH (pH 7.4). In addition, blank gels did not show any appreciable cytotoxicity, whereas 5FU-loaded hydrogels demonstrated efficacy against HCT116 colon cancer cells, which further confirms the potential use of these delivery platforms for direct targeting of 5-FU to the colon.
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Affiliation(s)
- Franklin Afinjuomo
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Paris Fouladian
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Ankit Parikh
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Thomas G Barclay
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Yunmei Song
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia
| | - Sanjay Garg
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5001, Australia.
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Tripodo G, Mandracchia D. Inulin as a multifaceted (active) substance and its chemical functionalization: From plant extraction to applications in pharmacy, cosmetics and food. Eur J Pharm Biopharm 2019; 141:21-36. [PMID: 31102649 DOI: 10.1016/j.ejpb.2019.05.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 01/09/2023]
Abstract
This review is aimed at critically discussing a collection of research papers on Inulin (INU) in different scientific fields. The first part of this work gives an overview on the main characteristics of native INU, including production, applications in food or cosmetics industries, its benefits on human health as well as its main nutraceutical properties. A particular focus is dedicated to the extraction techniques and to the specific effects of INU on intestinal microbiota. Other than in food industry, the number of INU applications increases dramatically in the pharmaceutical field especially due to its simple chemical functionalization. Thus, aim of this review is also to give practical examples of chemical functionalization performed on INU also by including critical comments based on the direct experience of the Authors. With this aim, a full paragraph is dedicated to practical chemical experiences useful to reduce the efforts when establishing new experimental conditions. Moreover, the pharmaceutical technology is also taken in special consideration by underlining the aspects leading at the preparation of formulations based on INU. At the end of the review, a critical paragraph is intended to feed the scientists' curiosity on this versatile polysaccharide.
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Affiliation(s)
- Giuseppe Tripodo
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy
| | - Delia Mandracchia
- Department of Pharmacy-Drug Science, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy.
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Afinjuomo F, Barclay TG, Song Y, Parikh A, Petrovsky N, Garg S. Synthesis and characterization of a novel inulin hydrogel crosslinked with pyromellitic dianhydride. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.10.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Liu HW, Wei DX, Deng JZ, Zhu JJ, Xu K, Hu WH, Xiao SH, Zhou YG. Combined antibacterial and osteogenic in situ effects of a bifunctional titanium alloy with nanoscale hydroxyapatite coating. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S460-S470. [PMID: 30260249 DOI: 10.1080/21691401.2018.1499662] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
To resolve the problems of bacterial infections and the low efficiency of osteogenesis of implanted titanium alloys in clinical dental and bone therapy, we developed a bifunctional titanium alloy (Ti) with a nano-hydroxyapatite (HA) coating (HBD + BMP/HA-Ti), which enables the sustained release of the natural antimicrobial peptide human β-defensin 3 (HBD-3) and bone morphogenetic protein-2 (BMP-2). Due to the poriferous nano-sized structure of the HA coating with a 20-30 μm thickness, the HBD + BMP/HA-Ti material had a high encapsulation efficiency (>74%) and exhibited synchronized slow release of HBD-3 and BMP-2. In an antibacterial test, HBD + BMP/HA-Ti prevented the growth of bacteria in an inoculated medium, and its surface remained free from viable bacteria after a continuous incubation with Gram-negative and Gram-positive strains for 7 days. Furthermore, good adhesion, proliferation and osteogenic differentiation of hBMSCs in contact with HBD + BMP/HA-Ti were achieved in 7 days. Therefore, the bifunctional titanium alloy HBD + BMP/HA-Ti has a great potential for eventual applications in the protection of implants against bacteria in the orthopaedic and dental clinic.
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Affiliation(s)
- Hua-Wei Liu
- a Beijing Tsinghua Changgung Hospital, School of Clinical Medicine , Tsinghua University , Beijing , China
| | - Dai-Xu Wei
- b School of Life Sciences, Tsinghua-Peking Center for Life Sciences , Tsinghua University , Beijing , China
| | - Jiu-Zheng Deng
- a Beijing Tsinghua Changgung Hospital, School of Clinical Medicine , Tsinghua University , Beijing , China
| | - Jian-Jin Zhu
- a Beijing Tsinghua Changgung Hospital, School of Clinical Medicine , Tsinghua University , Beijing , China
| | - Kai Xu
- a Beijing Tsinghua Changgung Hospital, School of Clinical Medicine , Tsinghua University , Beijing , China
| | - Wen-Hao Hu
- c Department of Orthopedics , Chinese PLA General Hospital , Beijing , China
| | - Song-Hua Xiao
- a Beijing Tsinghua Changgung Hospital, School of Clinical Medicine , Tsinghua University , Beijing , China
| | - Yong-Gang Zhou
- c Department of Orthopedics , Chinese PLA General Hospital , Beijing , China
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Degradation studies of modified inulin as potential encapsulation material for colon targeting and release of mesalamine. Carbohydr Polym 2018; 199:102-108. [PMID: 30143109 DOI: 10.1016/j.carbpol.2018.07.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 01/01/2023]
Abstract
Due to the potential to treat colon specific diseases with reduced side effects, colon targeting has become of high interest over the last decades. Chemical modified inulin was investigated for its potential as encapsulation material regarding its enzymatic degradability and its drug release behavior. Different degrees of acetylated inulin (degree of substitution, DS, 0.3-2.1) were synthesized. The chemical modification leads to a reduction in enzymatic degradability by inulinase and esterase, enzymes which can be expressed by the colon microbiota. Acetylated inulin was only hydrolyzed to fructose units up to DS of 1.3. Microparticles made of native inulin and acetylated inulin (DS 1.8) were loaded with the colon-specific drug mesalamine by spray drying. Compared to the burst release of mesalamine by inulin particles within 6 h, acetylated inulin particles showed less burst release followed by a continuous drug release phase caused by diffusion up to 30% mesalamine after 52 h.
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Redox-sensitive nanoparticles based on 4-aminothiophenol-carboxymethyl inulin conjugate for budesonide delivery in inflammatory bowel diseases. Carbohydr Polym 2018; 189:352-359. [DOI: 10.1016/j.carbpol.2017.12.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 12/11/2017] [Accepted: 12/11/2017] [Indexed: 12/11/2022]
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Walz M, Hirth T, Weber A. Investigation of chemically modified inulin as encapsulation material for pharmaceutical substances by spray-drying. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.07.072] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kumar S, Kesharwani SS, Kuppast B, Bakkari MA, Tummala H. Pathogen-mimicking vaccine delivery system designed with a bioactive polymer (inulin acetate) for robust humoral and cellular immune responses. J Control Release 2017; 261:263-274. [PMID: 28669593 PMCID: PMC6487847 DOI: 10.1016/j.jconrel.2017.06.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/26/2017] [Indexed: 01/24/2023]
Abstract
New and improved vaccines are needed against challenging diseases such as malaria, tuberculosis, Ebola, influenza, AIDS, and cancer. The majority of existing vaccine adjuvants lack the ability to significantly stimulate the cellular immune response, which is required to prevent the aforementioned diseases. This study designed a novel particulate based pathogen-mimicking vaccine delivery system (PMVDS) to target antigen-presenting-cells (APCs) such as dendritic cells. The uniqueness of PMVDS is that the polymer used to prepare the delivery system, Inulin Acetate (InAc), activates the innate immune system. InAc was synthesized from the plant polysaccharide, inulin. PMVDS provided improved and persistent antigen delivery to APCs as an efficient vaccine delivery system, and simultaneously, activated Toll-Like Receptor-4 (TLR-4) on APCs to release chemokine's/cytokines as an immune-adjuvant. Through this dual mechanism, PMVDS robustly stimulated both the humoral (>32 times of IgG1 levels vs alum) and the cell-mediated immune responses against the encapsulated antigen (ovalbumin) in mice. More importantly, PMVDS stimulated both cytotoxic T cells and natural killer cells of cell-mediated immunity to provide tumor (B16-ova-Melanoma) protection in around 40% of vaccinated mice and significantly delayed tumor progression in rest of the mice. PMVDS is a unique bio-active vaccine delivery technology with broader applications for vaccines against cancer and several intracellular pathogens, where both humoral and cellular immune responses are desired.
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Affiliation(s)
- Sunny Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Professions, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD 57007, USA
| | - Siddharth S Kesharwani
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Professions, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD 57007, USA
| | - Bhimanna Kuppast
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Professions, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD 57007, USA; Chicago College of Pharmacy, 555, 31st Street, Downers Grove, IL 60515, USA
| | - Mohammed Ali Bakkari
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Professions, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD 57007, USA
| | - Hemachand Tummala
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Professions, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD 57007, USA.
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Wang Y, Dong M, Guo M, Wang X, Zhou J, Lei J, Guo C, Qin C. Agar/gelatin bilayer gel matrix fabricated by simple thermo-responsive sol-gel transition method. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:293-299. [DOI: 10.1016/j.msec.2017.03.254] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/25/2017] [Accepted: 03/26/2017] [Indexed: 01/08/2023]
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Investigation of the biodistribution, breakdown and excretion of delta inulin adjuvant. Vaccine 2017; 35:4382-4388. [PMID: 28676380 DOI: 10.1016/j.vaccine.2017.06.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/16/2017] [Accepted: 06/19/2017] [Indexed: 01/08/2023]
Abstract
Insoluble, nanostructured delta inulin particles enhance the immunogenicity of co-administered protein antigens and consequently are used as a vaccine adjuvant (Advax™). To better understand their immunomodulatory properties, the in vitro hydrolysis and in vivo distribution of delta inulin particles were investigated. Delta inulin particle hydrolysis under bio-relevant acidic conditions resulted in no observable change to the bulk morphology using SEM, and HPLC results showed that only 6.1% of the inulin was hydrolysed over 21days. However, 65% of the terminal glucose groups were released, showing that acid hydrolysis relatively rapidly releases surface bound chemistries. This was used to explain in vivo biodistribution results in which delta inulin particles surface-labelled with fluorescein-5-thiosemicabizide were administered to mice using intramuscular (I.M.) or subcutaneous (S.C.) routes. Comparison analysis of the fluorescence of soluble inulin in the supernatants of homogenised tissues maintained at room temperature or heated to 100°C to solubilise particulate inulin was used to distinguish between fluorescent probe on soluble inulin and probe bound to inulin within particles. Following both I.M. and S.C. injection delta inulin exhibited a depot behaviour with local injection site residence for several weeks. Over this time, as injection site inulin reduced, there was measurable transport of intact delta inulin particles by macrophages to secondary lymphoid organs and the liver. Ultimately, the injected delta inulin became solubilised resulting in its detection in the plasma and in the urine. Thus injected delta inulin particles are initially taken up by macrophages at the site of injection, trafficked to secondary lymphoid tissue and the liver, and hydrolysed resulting in their becoming soluble and diffusing into the blood stream, from whence they are glomerularly filtered and excreted into the urine. These results provide important insights into the biodistribution of I.M. or S.C. injected delta inulin particles when used as vaccine adjuvants and their method of excretion.
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Kumar S, Kesharwani SS, Kuppast B, Rajput M, Ali Bakkari M, Tummala H. Discovery of inulin acetate as a novel immune-active polymer and vaccine adjuvant: synthesis, material characterization, and biological evaluation as a toll-like receptor-4 agonist. J Mater Chem B 2016; 4:7950-7960. [PMID: 32263785 DOI: 10.1039/c6tb02181f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Vaccine adjuvants are an essential part of modern vaccine design, especially against intracellular pathogens such as M. tuberculosis, malarial parasite, HIV, influenza virus and Ebola. The present work offers a unique approach to designing novel vaccine adjuvants by identifying polymers that mimic "pathogen associated molecular patterns" (PAMPS) and engineering an immune-active particulate vaccine delivery system that uses the polymer. By using this strategy, we report the discovery of the first plant polymer based toll-like receptor-4 (TLR-4) agonist, inulin acetate (InAc). InAc was synthesised from the plant polysaccharide inulin. Inulin acetate as a polymer and particles prepared using InAc were characterised using various physicochemical techniques. The TLR-4 agonistic activity of InAc was established in multiple immune, microglial, dendritic, peripheral blood mononuclear (human and swine) and genetically modified epithelial cells (HEK293) that exclusively express TLR-4 on their surface. InAc activated all the above-mentioned cells to release proliferative cytokines; however, InAc failed to activate when the were cells either pre-incubated with a TLR-4 specific antagonist or isolated from mice deficient in adapter proteins involved in TLR signalling (Mal/MyD88). Antigen encapsulated microparticles prepared with TLR-4 agonist InAc mimicked pathogens to offer improved antigen delivery to dendritic cells compared to soluble antigen (47 times) or antigen encapsulated poly(lactic-co-glycolic acid) (PLGA) particles (1.57 times). In conclusion, InAc represents a novel polymer-based modern vaccine adjuvant targeting specific signalling pathways of the innate immune system, which could be formulated into a platform vaccine delivery system against cancer and viral diseases.
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Affiliation(s)
- Sunny Kumar
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, SAV # 255, Box 2202C, Brookings, SD-57007, USA.
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Lim YH, Siow LF. Spray Dried Xanthone in Oil Emulsion Using Inulin as Wall Material. J FOOD PROCESS PRES 2016. [DOI: 10.1111/jfpp.13038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Yan-Hui Lim
- School of Science; Monash University Malaysia; 47500 Bandar Sunway, Selangor Darul Ehsan Malaysia
| | - Lee-Fong Siow
- School of Science; Monash University Malaysia; 47500 Bandar Sunway, Selangor Darul Ehsan Malaysia
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Mensink MA, Frijlink HW, van der Voort Maarschalk K, Hinrichs WL. Inulin, a flexible oligosaccharide. II: Review of its pharmaceutical applications. Carbohydr Polym 2015; 134:418-28. [DOI: 10.1016/j.carbpol.2015.08.022] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/09/2015] [Accepted: 08/10/2015] [Indexed: 01/09/2023]
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22
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García P, Vergara C, Robert P. Release Kinetic in Yogurt from Gallic Acid Microparticles with Chemically Modified Inulin. J Food Sci 2015; 80:C2147-52. [PMID: 26305430 DOI: 10.1111/1750-3841.13001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 07/21/2015] [Indexed: 11/26/2022]
Abstract
Gallic acid (GA) was encapsulated with native (NIn), cross-linked (CIn) and acetylated (AIn) inulin by spray-drying. Inulin microparticles were characterized by encapsulation efficiency (EE) and their release profile in yogurt. The EE was significantly higher for GA-CIn (98%) compared with GA-NIn (81%) and GA-AIn (77%) microparticles, showing the effect of the modification of inulin on interaction of GA-polymer. GA release profile data in yogurt for GA-CIn, GA-NIn and GA-AIn were fitted to Peppas and Higuchi models in order to obtain the GA release rate constant. Although the GA release rate constants were significantly different among systems, these differences were slight and the GA release was fast (80% < 2 h) in the three systems, showing that inulin-systems did not control GA release in yogurt. The mechanism of GA release followed a Fickian diffusion and relaxation of chains for all microparticles. According to the release profile, these microparticles would be best suited for use in instant foods.
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Affiliation(s)
- Paula García
- Dept. de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Univ. de Chile, Santos Dumont 964, Independencia, Santiago, Chile
| | - Cristina Vergara
- Dept. de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Univ. de Chile, Santos Dumont 964, Independencia, Santiago, Chile
| | - Paz Robert
- Dept. de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Univ. de Chile, Santos Dumont 964, Independencia, Santiago, Chile
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Delgadillo E, Corona RI, Toriz G, Contreras HJ, Sadeghifar H, Baobing W, Yang G, Lucia LA, Delgado E. Coacervated liposoluble fructan-based host–guest microspheres as unique drug delivery materials. RSC Adv 2015. [DOI: 10.1039/c5ra10164f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new approach to drug release with microspheres from acetylated liposoluble fructans is demonstrated. Modification of solubility by acetylation supported their preparation by precipitation–coacervation that was able to encapsulate ∼33% of ibuprofen.
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Affiliation(s)
- Erika Delgadillo
- Qilu University of Technology
- Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education
- Jinan
- P. R. China
- Centro de Investigación en Biomateriales
| | - Rosa I. Corona
- Laboratorio de Biotecnología
- Departamento de Ingeniería Química
- Universidad de Guadalajara
- Guadalajara
- Mexico
| | - Guillermo Toriz
- Centro de Investigación en Biomateriales
- Departamento de Madera
- Celulosa y Papel
- Universidad de Guadalajara
- Zapopan 45110
| | - Héctor J. Contreras
- Centro de Investigación en Biomateriales
- Departamento de Madera
- Celulosa y Papel
- Universidad de Guadalajara
- Zapopan 45110
| | - Hasan Sadeghifar
- Qilu University of Technology
- Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education
- Jinan
- P. R. China
- Departments of Wood & Paper Science
| | - Wang Baobing
- Qilu University of Technology
- Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education
- Jinan
- P. R. China
| | - Guihua Yang
- Qilu University of Technology
- Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education
- Jinan
- P. R. China
| | - Lucian A. Lucia
- Qilu University of Technology
- Key Laboratory of Pulp & Paper Science and Technology of the Ministry of Education
- Jinan
- P. R. China
- Departments of Wood & Paper Science
| | - Ezequiel Delgado
- Centro de Investigación en Biomateriales
- Departamento de Madera
- Celulosa y Papel
- Universidad de Guadalajara
- Zapopan 45110
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24
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Electrosprayed inulin microparticles for microbiota triggered targeting of colon. Carbohydr Polym 2014; 112:225-34. [DOI: 10.1016/j.carbpol.2014.05.087] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/13/2014] [Accepted: 05/18/2014] [Indexed: 11/23/2022]
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25
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Biopolymer-based nanoparticles and microparticles: Fabrication, characterization, and application. Curr Opin Colloid Interface Sci 2014. [DOI: 10.1016/j.cocis.2014.07.002] [Citation(s) in RCA: 309] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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26
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Synthesis, characterization and in vitro anti-diabetic activity of catechin grafted inulin. Int J Biol Macromol 2014; 64:76-83. [DOI: 10.1016/j.ijbiomac.2013.11.028] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 11/05/2013] [Accepted: 11/26/2013] [Indexed: 11/17/2022]
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27
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García P, Vega J, Jimenez P, Santos J, Robert P. Alpha-tocopherol microspheres with cross-linked and acetylated inulin and their release profile in a hydrophilic model. EUR J LIPID SCI TECH 2013. [DOI: 10.1002/ejlt.201200109] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paula García
- Facultad de Ciencias Químicas y Farmacéuticas; Departamento de Ciencia de los Alimentos y Tecnología Química; Universidad de Chile; Santiago; Chile
| | - Juan Vega
- Facultad de Ciencias Químicas y Farmacéuticas; Departamento de Ciencia de los Alimentos y Tecnología Química; Universidad de Chile; Santiago; Chile
| | - Paula Jimenez
- Facultad de Medicina; Departamento de Nutrición; Universidad de Chile; Santiago; Chile
| | - José Santos
- Facultad de Química; Departamento de Química-Física; Pontificia Universidad Católica de Chile; Santiago; Chile
| | - Paz Robert
- Facultad de Ciencias Químicas y Farmacéuticas; Departamento de Ciencia de los Alimentos y Tecnología Química; Universidad de Chile; Santiago; Chile
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28
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Kumar S, Tummala H. Development of Soluble Inulin Microparticles as a Potent and Safe Vaccine Adjuvant and Delivery System. Mol Pharm 2013; 10:1845-53. [DOI: 10.1021/mp3006374] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sunny Kumar
- College of Pharmacy, South Dakota State University, SAV # 255, Box 2202C, Brookings, South Dakota
57006, United States
| | - Hemachand Tummala
- College of Pharmacy, South Dakota State University, SAV # 255, Box 2202C, Brookings, South Dakota
57006, United States
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29
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Robert P, García P, Reyes N, Chávez J, Santos J. Acetylated starch and inulin as encapsulating agents of gallic acid and their release behaviour in a hydrophilic system. Food Chem 2012. [DOI: 10.1016/j.foodchem.2012.02.019] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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30
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Barclay T, Ginic-Markovic M, Johnston MR, Cooper PD, Petrovsky N. Analysis of the hydrolysis of inulin using real time 1H NMR spectroscopy. Carbohydr Res 2012; 352:117-25. [PMID: 22464225 PMCID: PMC3324600 DOI: 10.1016/j.carres.2012.03.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 02/28/2012] [Accepted: 03/02/2012] [Indexed: 12/27/2022]
Abstract
The hydrolysis of various carbohydrates was investigated under acidic conditions in real time by (1)H NMR spectroscopy, with a focus on the polysaccharide inulin. Sucrose was used as a model compound to illustrate the applicability of this technique. The hydrolysis of sucrose was shown to follow pseudo first order kinetics and have an activation energy of 107.0 kJ mol(-1) (SD 1.7 kJ mol(-1)). Inulin, pullulan and glycogen also all followed pseudo first order kinetics, but had an initiation phase at least partially generated by the protonation of the glycosidic bonds. It was also demonstrated that polysaccharide chain length has an effect on the hydrolysis of inulin. For short chain inulin (DPn 18, SD 0.70) the activation energy calculated for the hydrolytic cleavage of glucose was similar to sucrose at 108.5 kJ mol(-1) (SD 0.60). For long chain inulin (DPn 30, SD 1.3) the activation energy for the hydrolytic cleavage of glucose was reduced to 80.5 kJ mol(-1) (SD 2.3 kJ mol(-1)). This anomaly has been attributed to varied conformations for the two different lengths of inulin chain in solution.
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Affiliation(s)
- Thomas Barclay
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Milena Ginic-Markovic
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Martin R. Johnston
- School of Chemical and Physical Sciences, Flinders University, Adelaide, Australia 5042
| | - Peter D. Cooper
- Cancer Research Laboratory, ANU Medical School at The Canberra Hospital, Australian National University, Canberra, Australia 2605
- Vaxine Pty Ltd, Flinders Medical Centre, Adelaide Australia 5042
| | - Nikolai Petrovsky
- Vaxine Pty Ltd, Flinders Medical Centre, Adelaide Australia 5042
- Department of Endocrinology, Flinders Medical Centre, Adelaide, Australia 5042
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31
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Pitarresi G, Giacomazza D, Triolo D, Giammona G, San Biagio PL. Rheological characterization and release properties of inulin-based hydrogels. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2012.01.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Fares MM, Salem MS, Khanfar M. Inulin and poly(acrylic acid) grafted inulin for dissolution enhancement and preliminary controlled release of poorly water-soluble Irbesartan drug. Int J Pharm 2011; 410:206-11. [DOI: 10.1016/j.ijpharm.2011.03.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2010] [Revised: 03/06/2011] [Accepted: 03/13/2011] [Indexed: 10/18/2022]
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33
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Lasseur B, Lothier J, Wiemken A, Van Laere A, Morvan-Bertrand A, den Ende WV, Prud'homme MP. Towards a better understanding of the generation of fructan structure diversity in plants: molecular and functional characterization of a sucrose:fructan 6-fructosyltransferase (6-SFT) cDNA from perennial ryegrass (Lolium perenne). JOURNAL OF EXPERIMENTAL BOTANY 2011; 62:1871-85. [PMID: 21196473 PMCID: PMC3060680 DOI: 10.1093/jxb/erq388] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 10/29/2010] [Accepted: 10/29/2010] [Indexed: 05/20/2023]
Abstract
The main storage compounds in Lolium perenne are fructans with prevailing β(2-6) linkages. A cDNA library of L. perenne was screened using Poa secunda sucrose:fructan 6-fructosyltransferase (6-SFT) as a probe. A full-length Lp6-SFT clone was isolated as shown by heterologous expression in Pichia pastoris. High levels of Lp6-SFT transcription were found in the growth zone of elongating leaves and in mature leaf sheaths where fructans are synthesized. Upon fructan synthesis induction, Lp6-SFT transcription was high in mature leaf blades but with no concomitant accumulation of fructans. In vitro studies with the recombinant Lp6-SFT protein showed that both 1-kestotriose and 6G-kestotriose acted as fructosyl acceptors, producing 1- and 6-kestotetraose (bifurcose) and 6G,6-kestotetraose, respectively. Interestingly, bifurcose formation ceased and 6G,6-kestotetraose was formed instead, when recombinant fructan:fructan 6G-fructosyltransferase (6G-FFT) of L. perenne was introduced in the enzyme assay with sucrose and 1-kestotriose as substrates. The remarkable absence of bifurcose in L. perenne tissues might be explained by a higher affinity of 6G-FFT, as compared with 6-SFT, for 1-kestotriose, which is the first fructan formed. Surprisingly, recombinant 6-SFT from Hordeum vulgare, a plant devoid of fructans with internal glucosyl residues, also produced 6G,6-kestotetraose from sucrose and 6G-kestotriose. In the presence of recombinant L. perenne 6G-FFT, it produced 6G,6-kestotetraose from 1-kestotriose and sucrose, like L. perenne 6-SFT. Thus, we demonstrate that the two 6-SFTs have close catalytic properties and that the distinct fructans formed in L. perenne and H. vulgare can be explained by the presence of 6G-FFT activity in L. perenne and its absence in H. vulgare.
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Affiliation(s)
- Bertrand Lasseur
- UMR INRA-UCBN 950 EVA Ecophysiologie Végétale, Agronomie & nutritions NCS, Université de Caen, Esplanade de la Paix, 14032 Caen Cedex, France
| | - Jérémy Lothier
- UMR INRA-UCBN 950 EVA Ecophysiologie Végétale, Agronomie & nutritions NCS, Université de Caen, Esplanade de la Paix, 14032 Caen Cedex, France
| | - Andres Wiemken
- Department of Botany, University of Basel, Hebelstrasse 1, CH-4056 Basel, Switzerland
| | - André Van Laere
- Department of Biology, Laboratory for Molecular Plant Physiology, Botany Institute, KULeuven, Kasteelpark Arenberg 31, B-3001 Leuven, Belgium
| | - Annette Morvan-Bertrand
- UMR INRA-UCBN 950 EVA Ecophysiologie Végétale, Agronomie & nutritions NCS, Université de Caen, Esplanade de la Paix, 14032 Caen Cedex, France
| | - Wim Van den Ende
- Department of Biology, Laboratory for Molecular Plant Physiology, Botany Institute, KULeuven, Kasteelpark Arenberg 31, B-3001 Leuven, Belgium
| | - Marie-Pascale Prud'homme
- UMR INRA-UCBN 950 EVA Ecophysiologie Végétale, Agronomie & nutritions NCS, Université de Caen, Esplanade de la Paix, 14032 Caen Cedex, France
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Buriti FC, Castro IA, Saad SM. Viability of Lactobacillus acidophilus in synbiotic guava mousses and its survival under in vitro simulated gastrointestinal conditions. Int J Food Microbiol 2010; 137:121-9. [DOI: 10.1016/j.ijfoodmicro.2009.11.030] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 09/21/2009] [Accepted: 11/26/2009] [Indexed: 12/27/2022]
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36
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Pitarresi G, Tripodo G, Calabrese R, Craparo EF, Licciardi M, Giammona G. Hydrogels for Potential Colon Drug Release by Thiol-ene Conjugate Addition of a New Inulin Derivative. Macromol Biosci 2008; 8:891-902. [DOI: 10.1002/mabi.200800043] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Prata AS, Menut C, Leydet A, Trigo JR, Grosso CRF. Encapsulation and release of a fluorescent probe, khusimyl dansylate, obtained from vetiver oil by complex coacervation. FLAVOUR FRAG J 2008. [DOI: 10.1002/ffj.1845] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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D'Souza SS, DeLuca PP. Methods to assess in vitro drug release from injectable polymeric particulate systems. Pharm Res 2006; 23:460-74. [PMID: 16400516 DOI: 10.1007/s11095-005-9397-8] [Citation(s) in RCA: 180] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Accepted: 11/03/2005] [Indexed: 10/25/2022]
Abstract
This review provides a compilation of the methods used to study real-time (37 degrees C) drug release from parenteral microparticulate drug delivery systems administered via the subcutaneous or intramuscular route. Current methods fall into three broad categories, viz., sample and separate, flow-through cell, and dialysis techniques. The principle of the specific method employed along with the advantages and disadvantages are described. With the "sample and separate" technique, drug-loaded microparticles are introduced into a vessel, and release is monitored over time by analysis of supernatant or drug remaining in the microspheres. In the "flow-through cell" technique, media is continuously circulated through a column containing drug-loaded microparticles followed by analysis of the eluent. The "dialysis" method achieves a physical separation of the drug-loaded microparticles from the release media by use of a membrane, which allows for sampling without interference of the microspheres. With all these methods, the setup and sampling techniques seem to influence in vitro release; the results are discussed in detail, and criteria to aid in selection of a method are stated. Attempts to establish in vitro-in vivo correlation for these injectable dosage forms are also discussed. It would be prudent to have an in vitro test method for microparticles that satisfies compendial and regulatory requirements, is user friendly, robust, and reproducible, and can be used for quality-control purposes at real-time and elevated temperatures.
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Affiliation(s)
- Susan S D'Souza
- University of Kentucky College of Pharmacy, Lexington, Kentucky, 40536, USA
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Tripodo G, Pitarresi G, Palumbo FS, Craparo EF, Giammona G. UV-Photocrosslinking of Inulin Derivatives to Produce Hydrogels for Drug Delivery Application. Macromol Biosci 2005; 5:1074-84. [PMID: 16245273 DOI: 10.1002/mabi.200500134] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In this work, INU, a natural polysaccharide, has been chemically modified in order to obtain new photocrosslinkable derivatives. To reach this goal, INU has been derivatized with MA thus obtaining four samples (INU-MA derivatives) as a function of the temperature and time of reaction. An aqueous solution of the derivative INU-MA1 was irradiated by using a UV lamp with an emission range from 250 to 364 nm and without using photoinitiators. The obtained hydrogel showed a remarkable water affinity but it underwent a partial degradation in simulated gastric fluid. To overcome this drawback, INU-MA1 was derivatized with SA thus obtaining the INU-MA1-SA derivative designed to produce a hydrogel showing a low swelling and an increased chemical stability in acidic medium. Ibuprofen, as a model drug, was loaded by soaking into INU-MA1 and INU-MA1-SA hydrogels and its release from these matrices was evaluated in simulated gastrointestinal fluids. INU-MA1 hydrogel showed the ability to quickly release the entrapped drug thus indicating its potential as a matrix for an oral formulation. INU-MA1-SA hydrogel showed a pH-responsive drug delivery. Therefore it is a promising candidate for controlled drug release in the intestinal tract.
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Affiliation(s)
- Giuseppe Tripodo
- Dipartimento di Chimica e Tecnologie Farmaceutiche Università degli Studi di Palermo, Via Archirafi n.32, 90123-Palermo, Italy
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D’Souza SS, DeLuca PP. Development of a dialysis in vitro release method for biodegradable microspheres. AAPS PharmSciTech 2005; 6:E323-8. [PMID: 16353991 PMCID: PMC2750545 DOI: 10.1208/pt060242] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The purpose of this research was to develop a simple and convenient in vitro release method for biodegradable microspheres using a commercially available dialyzer. A 25 KD MWCO Float-a-Lyzer was used to evaluate peptide diffusion at 37 degrees C and 55 degrees C in different buffers and assess the effect of peptide concentration. In vitro release of Leuprolide from PLGA microspheres, having a 1-month duration of action, was assessed using the dialyzer and compared with the commonly used sample and separate method with and without agitation. Peptide diffusion through the dialysis membrane was rapid at 37 degrees C and 55 degrees C in all buffers and was independent of peptide concentration. There was no detectable binding to the membrane under the conditions of the study. In vitro release of Leuprolide from PLGA microspheres was tri-phasic and was complete in 28 days with the dialysis technique. With the sample and separate technique, linear release profiles were obtained with complete release occurring under conditions of agitation. Diffusion through the dialysis membrane was sufficiently rapid to qualify the Float-a-Lyzer for an in vitro release system for microparticulate dosage forms. Membrane characteristics render it useful to study drug release under real-time and accelerated conditions.
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Affiliation(s)
- Susan S. D’Souza
- />University of Kentucky College of Pharmacy, 40536 Lexington, KY
| | - Patrick P. DeLuca
- />Faculty of Pharmaceutical Sciences, University of Kentucky College of Pharmacy, 40536 Lexington, KY
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