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Laffleur F, Hörmann N, Gust R, Ganner A. Synthesis, characterization and evaluation of hyaluronic acid-based polymers for nasal delivery. Int J Pharm 2023; 631:122496. [PMID: 36529356 DOI: 10.1016/j.ijpharm.2022.122496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/29/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022]
Abstract
Epidemiological research has found that between 5 and 12 percent of the population suffers from chronic rhinosinusitis. Patients are dealing with local side effects such as nasal dryness, sporadic sneezing, and nasal pain in addition to the inflammation. The aim of this study was to synthesize a polymer based on hyaluronic acid in order to provide lubrication combined with a ligand leading to a covalent binding on the nasal mucosa. Hyaluronic acid (HA) was modified with L-cysteine ethyl ester hydrochloride (CYS) via amid bond formation. Ellman's assay, together with spectroscopic techniques like IR and 1H NMR, confirmed that HACys had been successfully synthesized. It was demonstrated that HACys is safe for administration on the nasal mucosa. The mucoadhesive potential was determined by 3.26-fold with the rotating cylinder assay and 1.4-fold in terms of bioadhesive examination, respectively. Further, the stability of the modified polymer was improved by 7.6-fold compared to the unmodified polymer. Spraying the formulation on the nasal mucosa, the residence time of a model drug was 1.74-fold prolonged at the site of action compared to unmodified polymer. In light of these findings, modified hyaluronic acid (HACys) displayed compelling properties such as lubricity, targeted application, long-lasting effect, and safety and therefore could be an excellent candidate for nasal application.
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Affiliation(s)
- Flavia Laffleur
- Department of Pharmaceutical Technology, University of Innsbruck, Institute of Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria.
| | - Nikolas Hörmann
- Department of Pharmaceutical Chemistry, University of Innsbruck, Institute of Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Ronald Gust
- Department of Pharmaceutical Chemistry, University of Innsbruck, Institute of Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
| | - Ariane Ganner
- Department of Pharmaceutical Technology, University of Innsbruck, Institute of Pharmacy, Innrain 80-82, 6020 Innsbruck, Austria
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2
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Chitosan/carboxymethyl starch bio-coated naproxen@GQDs/Copper glutamate MOFs: A ne system for colon-specific drug delivery relay on the special structure of the used polymers. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Qaiser A, Kiani MH, Parveen R, Sarfraz M, Shahnaz G, Rahdar A, Taboada P. Design and synthesis of multifunctional polymeric micelles for targeted delivery in Helicobacter pylori infection. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Lucena MDA, Ramos IFDS, Geronço MS, de Araújo R, da Silva Filho FL, da Silva LMLR, de Sousa RWR, Ferreira PMP, Osajima JA, Silva-Filho EC, Rizzo MDS, Ribeiro AB, da Costa MP. Biopolymer from Water Kefir as a Potential Clean-Label Ingredient for Health Applications: Evaluation of New Properties. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123895. [PMID: 35745016 PMCID: PMC9231297 DOI: 10.3390/molecules27123895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/23/2022]
Abstract
The present work aimed to characterize the exopolysaccharide obtained from water kefir grains (EPSwk), a symbiotic association of probiotic microorganisms. New findings of the technological, mechanical, and biological properties of the sample were studied. The EPSwk polymer presented an Mw of 6.35 × 105 Da. The biopolymer also showed microcrystalline structure and characteristic thermal stability with maximum thermal degradation at 250 °C. The analysis of the monosaccharides of the EPSwk by gas chromatography demonstrated that the material is composed of glucose units (98 mol%). Additionally, EPSwk exhibited excellent emulsifying properties, film-forming ability, a low photodegradation rate (3.8%), and good mucoadhesive properties (adhesion Fmax of 1.065 N). EPSwk presented cytocompatibility and antibacterial activity against Escherichia coli and Staphylococcus aureus. The results of this study expand the potential application of the exopolysaccharide from water kefir as a potential clean-label raw material for pharmaceutical, biomedical, and cosmetic applications.
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Affiliation(s)
- Monalisa de Alencar Lucena
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | - Igor Frederico da Silveira Ramos
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | - Maurycyo Silva Geronço
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | - Ricardo de Araújo
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | | | - Luís Manuel Lopes Rodrigues da Silva
- CPIRN-UDI/IPG—Centro de Potencial e Inovação em Recursos Naturais, Unidade de Investigação para o Desenvolvimento do Interior do Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal;
| | - Rayran Walter Ramos de Sousa
- Laboratory of Experimental Cancerology (LabCancer), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (R.W.R.d.S.); (P.M.P.F.)
- Pharmaceutical Sciences Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil;
| | - Paulo Michel Pinheiro Ferreira
- Laboratory of Experimental Cancerology (LabCancer), Department of Biophysics and Physiology, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (R.W.R.d.S.); (P.M.P.F.)
- Pharmaceutical Sciences Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil;
| | - Josy Anteveli Osajima
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | - Edson Cavalcanti Silva-Filho
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
| | - Márcia dos Santos Rizzo
- Pharmaceutical Sciences Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil;
| | - Alessandra Braga Ribeiro
- CBQF—Centro de Biotecnologia e Química Fina—Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
- Correspondence:
| | - Marcilia Pinheiro da Costa
- Materials Science and Engineering Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil; (M.d.A.L.); (I.F.d.S.R.); (M.S.G.); (R.d.A.); (J.A.O.); (E.C.S.-F.); (M.P.d.C.)
- College of Pharmacy, Federal University of Piauí, Teresina 64049-550, PI, Brazil;
- Pharmaceutical Sciences Graduate Program, Federal University of Piauí, Teresina 64049-550, PI, Brazil;
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Jaberifard F, Arsalani N, Ghorbani M, Mostafavi H. Incorporating halloysite nanotube/carvedilol nanohybrids into gelatin microsphere as a novel oral pH-sensitive drug delivery system. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Laffleur F, Ataii M, Nagler M. Evaluation of cellulose based films comprising tea tree oil against dermatophytes and yeasts. Eur J Pharm Sci 2021; 167:105989. [PMID: 34520970 DOI: 10.1016/j.ejps.2021.105989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Onychomycosis is defined as infection caused by nondermatophytic molds and yeasts: tinea unguium is caused by dermatophytes. PURPOSE Within this study, hydroxyethyl cellulose (HEC) as an important non-ionic, water-soluble cellulose derivative was chosen to develop formulations containing tea tree oil as active antifungal agent were developed and evaluated for their potential in the treatment of onychomycosis. METHODS Two polymeric films based on HEC (HEC-B-04 and HEC-E-10) were obtained by solvent evaporation method and characterized in terms of appearance, disintegration, stickiness, elongation, rheological behavior and adhesiveness. Moreover, different strains of dermatophytes such as Trichophyton rubrum and yeasts as Candida albicans were treated with polymeric films containing tea tree oil (0.5 - 2 % v/v) in order to determine their antifungal potential by the inhibition zone assay. RESULTS HEC-B-04 and HEC-E-10 were investigated by SEM measurements resulting in confluent surface morphology. HEC-B-04 and HEC-E-10 showed disintegration after 32.7 min and 34.0 min, respectively. Furthermore, HEC-E-10 revealed a moisture index of 1.74 and underpinned adhesive properties in terms of required detachment force with 4.86 N. HEC-E-10 pointed to the most antifungal one among the others against Trichophyton rubrum and Candida albicans. CONCLUSION Taking these findings in consideration, promising adhesive onychial formulations were developed as forthcoming approach in treatment of nail infections.
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Affiliation(s)
- Flavia Laffleur
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck 6020, Austria.
| | - Martin Ataii
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80/82, Innsbruck 6020, Austria
| | - Magdalena Nagler
- Institute of Microbiology, University of Innsbruck, Technikerstraße 25 d, Innsbruck 6020, Austria
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Macocinschi D, Filip D, Ciubotaru BI, Dumitriu RP, Varganici CD, Zaltariov MF. Blends of sodium deoxycholate-based poly(ester ether)urethane ionomer and hydroxypropylcellulose with mucosal adhesiveness. Int J Biol Macromol 2020; 162:1262-1275. [PMID: 32585272 DOI: 10.1016/j.ijbiomac.2020.06.191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/26/2020] [Accepted: 06/19/2020] [Indexed: 11/26/2022]
Abstract
New mucoadhesive blends of sodium deoxycholate-based poly(ester ether)urethane ionomer (PU) and hydroxypropyl cellulose (HPC) are prepared. The presence of the intermolecular interactions between the polymeric components has been investigated by FTIR spectroscopy indicating their miscibility in the solid phase. DSC studies also revealed a single glass transition of the blends, which is indicative of miscibility of PU and HPC in the amorphous phase. The amount of HPC in the blends influences strongly the physicochemical and mucoadhesion/bioadhesion properties. It was found that the value of area attributed to ordered hydrogen bonding (FTIR), the onset temperature values of thermal degradation in N2 flow (TG/DTG), the values of the sorption capacity (Dynamic Vapor Sorption-DVS), the values of the apparent viscosity (rheological measurements) and mucoadhesion/bioadhesion properties increased by increasing the HPC content in the blends. Complex viscosity revealed shear thinning behavior for all the studied solutions evidencing the contributive role of polymer viscoelasticity on mucoadhesion. It was found that both G' and G" increase with an increase in angular frequency and G">G' which is characteristic for liquid-like (sol state) behavior for all blended solutions and this behavior is helpful in the adhesion with mucosa surface. Mucoadhesion of PU/HPC blends was assessed in the stomach mucosa at pH 2.6 and 37 °C. Bioadhesion test was performed at pH 7.4 and 37 °C and revealed a stronger interaction of PU/HPC blends with cellulose membrane than with stomach mucosa. The similar nature of the HPC and cellulose membrane determines additional adhesion forces and implicity high adhesion properties. The HPC component increases the hydrophilicity of the blends as DVS analysis revealed, but also leads to hydrolytic degradation. FTIR spectroscopy analysis was used to evaluate the hydrolytic stability in acid (pH 2.6) and slightly alkaline (pH 7.4) PBS media and a mechanism of degradation has been proposed.
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Affiliation(s)
- Doina Macocinschi
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi 700487, Romania
| | - Daniela Filip
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi 700487, Romania
| | - Bianca-Iulia Ciubotaru
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi 700487, Romania
| | | | | | - Mirela-Fernanda Zaltariov
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi 700487, Romania.
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8
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Maria S, Sarwar HS, Sohail MF, Imran M, Salman Qureshi O, Raza A, Ahmad NM, Iqbal A, Shahnaz G. Synthesis and characterization of pre-activated thiolated chitosan nanoparticles for oral delivery of octreotide. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101807] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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9
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Controlling evolution of protein corona: a prosperous approach to improve chitosan-based nanoparticle biodistribution and half-life. Sci Rep 2020; 10:9664. [PMID: 32541900 PMCID: PMC7295777 DOI: 10.1038/s41598-020-66572-y] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 05/12/2020] [Indexed: 11/09/2022] Open
Abstract
Protein corona significantly affects in vivo fate of nanoparticles including biodistribution and half-life. Without manipulating the physicochemical properties of nanoparticles with considering their biointerference, attaining effective treatment protocols is impossible. For this reason, protein corona evolution and biodistribution of different chitosan (Ch)-based nanoparticles including Ch and carboxymethyl dextran (CMD)/thiolated dextran (TD) polyelectrolyte complexes (PECs) were studied using highly precious and sensitive methods such as liquid chromatography-mass/mass (LC-MS/MS) spectroscopy and positron emission tomography/computed tomography (PET/CT) scan. The importance of serum presence/absence in culture medium with different pH and corona effect on cellular uptake of PECs investigated by in vitro study. Designed PECs have low amounts of proteins in corona mostly enriched by Apolipoproteins, protein C, hemoglobin subunits, and inter-alpha- trypsin inhibitor that beside improving uptake of nanoparticles, they have low liver uptake and notable heart blood pool accumulation that confirmed the long circulation time of the nanoparticles which is favorable for delivery of nanoparticles to the site of action and achieving required therapeutic effect.
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10
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Batool A, Arshad R, Razzaq S, Nousheen K, Kiani MH, Shahnaz G. Formulation and evaluation of hyaluronic acid-based mucoadhesive self nanoemulsifying drug delivery system (SNEDDS) of tamoxifen for targeting breast cancer. Int J Biol Macromol 2020; 152:503-515. [DOI: 10.1016/j.ijbiomac.2020.02.275] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 01/09/2023]
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Abd Kadir E, Lim V. Redox‐Responsive Disulphide Bioadhesive Polymeric Nanoparticles for Colon‐Targeted Drug Delivery. BIOADHESIVES IN DRUG DELIVERY 2020:123-145. [DOI: 10.1002/9781119640240.ch5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Optimization of Thiolated Chitosan Nanoparticles for the Enhancement of in Vivo Hypoglycemic Efficacy of Sitagliptin in Streptozotocin-Induced Diabetic Rats. Pharmaceutics 2020; 12:pharmaceutics12040300. [PMID: 32224875 PMCID: PMC7238266 DOI: 10.3390/pharmaceutics12040300] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/06/2023] Open
Abstract
Sitagliptin (SGN) is an antidiabetic drug used for treatment of diabetes mellitus type II. The objectives of this study were to formulate SGN in form of thiolated chitosan (TC) nanoparticles to enhance the mucoadhesion properties of SGN to the gastrointestinal tract, prolong drug release, decrease side effects, and enhance patient compliance. Seventeen batches of SGN-TC nanoparticles were designed by Box-Behnken design and prepared using the ionic gelation method using tripolyphosphate (TPP) as crosslinking agent. The prepared formulations were evaluated for particle size, entrapment efficiency %, and in vitro drug release. Based on the results of optimization, three formulations (F1-F3) were prepared with different drug polymer ratios (1:1, 1:2, and 1:3). The mucoadhesion study and in vivo hypoglycemic activity of three formulations were evaluated in comparison to free SGN in streptozotocin (STZ)-induced diabetic rats. The seventeen SGN-TC nanoparticles showed small particle sizes, high entrapment efficiency, and prolonged drug release. The concentration of TC polymers had highest effect on these responses. The percentage of SGN-TC nanoparticles adhered to tissue was increased and the release was prolonged as the concentration of TC polymer increased (F3 > F2 > F1). The hypoglycemic effect of SGN-TC nanoparticles was significantly higher than resulted by free SGN. It was concluded that TC nanoparticles had the ability to enhance the mucoadhesion properties of SGN and prolong the drug release. SGN-TC nanoparticles significantly reduced plasma glucose levels compared to free SGN in STZ-induced diabetic rats.
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13
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Edwards SE, Flynn S, Hobson JJ, Chambon P, Cauldbeck H, Rannard SP. Mucus-responsive functionalized emulsions: design, synthesis and study of novel branched polymers as functional emulsifiers. RSC Adv 2020; 10:30463-30475. [PMID: 35516041 PMCID: PMC9056332 DOI: 10.1039/d0ra05820c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 07/22/2020] [Indexed: 11/26/2022] Open
Abstract
Mucus lines the moist cavities throughout the body, acting as barrier by protecting the underlying cells against the external environment, but it also hinders the permeation of drugs and drug delivery systems. As the rate of diffusion is low, the development of a system which could increase retention time at the mucosal surface would prove beneficial. Here, we have designed a range of branched copolymers to act as functional mucus-responsive oil-in-water emulsifiers comprising the hydrophilic monomer oligo(ethylene glycol) methacrylate and a hydrophobic dodecyl initiator. The study aimed to investigate the importance of chain end functionality on successful emulsion formation, by systematically replacing a fraction of the hydrophobic chain ends with a secondary poly(ethylene glycol) based hydrophilic initiator in a mixed-initiation strategy; a decrease of up to 75 mole percent of hydrophobic chain ends within the branched polymer emulsifiers was shown to maintain comparative emulsion stability. These redundant chain ends allowed for functionality to be incorporated into the polymers via a xanthate based initiator containing a masked thiol group; thiol groups are known to have mucoadhesive character, due to their ability to form disulfide bonds with the cysteine rich areas of mucus. The mucoadhesive nature of emulsions stabilised by thiol-containing branched copolymers was compared to non-functional emulsions in the presence of a biosimilar mucosal substrate and enhanced adherence to the mucosal surface was observed. Importantly, droplet rupture and mucus triggered release of dye-containing oil was seen from previously highly-stable thiol-functional emulsions; this observation was not mirrored by non-functional emulsions where droplet integrity was maintained even in the presence of mucus. Mucoadhesion and mucus-sensitive materials have many applications. Redundant chain-ends within branched polymer emulsifiers have been functionalized with thiols, without compromising emulsion stability, to create mucus-interacting emulsions.![]()
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Affiliation(s)
- Stephanie E. Edwards
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | - Sean Flynn
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | | | - Pierre Chambon
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
| | | | - Steve P. Rannard
- Department of Chemistry
- University of Liverpool
- UK
- Materials Innovation Factory
- University of Liverpool
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Kumari R, Sunil D, Ningthoujam RS. Hypoxia-responsive nanoparticle based drug delivery systems in cancer therapy: An up-to-date review. J Control Release 2019; 319:135-156. [PMID: 31881315 DOI: 10.1016/j.jconrel.2019.12.041] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 12/22/2019] [Accepted: 12/23/2019] [Indexed: 02/08/2023]
Abstract
Hypoxia is a salient feature observed in most solid malignancies that holds a pivotal role in angiogenesis, metastasis and resistance to conventional cancer therapeutic approaches, and thus enables cancer progression. However, the typical characteristics of hypoxic cells such as low oxygen levels and highly bio-reductive environment can offer stimuli-responsive drug release to aid in tumor-specific chemo, radio, photodyanamic and sonodynamic therapies. This approach based on targeting the poorly oxygenated tumor habitats offers the prospective to overcome the difficulties that arises due to heterogenic nature of tumor and could be possibly used in the design of diagnostic as well as therapeutic nanocarriers for targeting various types of solid cancers. Consequently, hypoxia triggered nanoparticle based drug delivery systems is a rapidly progressing research area in developing effective strategies to combat drug-resistance in solid tumors. The present review presents the recent advances in the development of hypoxia-responsive nanovehicles for drug delivery to heterogeneous tumors. The initial sections of the article provides insights into the development of hypoxia in growing cancer and its role in disease progression. The current limitations and the future prospective of hypoxia-stimulated nanomachines for cancer treatment are also discussed.
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Affiliation(s)
- Rashmi Kumari
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576 104, Karnataka, India
| | - Dhanya Sunil
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576 104, Karnataka, India.
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15
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Affiliation(s)
- Yabin Meng
- Department of Biomedical Engineering, School of EngineeringSun Yat‐sen University Guangzhou 510006 P. R. China
| | - Shuyan Han
- Department of Biomedical Engineering, School of EngineeringSun Yat‐sen University Guangzhou 510006 P. R. China
| | - Zhipeng Gu
- College of Polymer Science and EngineeringState Key Laboratory of Polymer Materials EngineeringSichuan University Chengdu 610065 P. R. China
| | - Jun Wu
- Department of Biomedical Engineering, School of EngineeringSun Yat‐sen University Guangzhou 510006 P. R. China
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16
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Tarhan T, Tural B, Tural S. Synthesis and characterization of new branched magnetic nanocomposite for loading and release of topotecan anti-cancer drug. J Anal Sci Technol 2019. [DOI: 10.1186/s40543-019-0189-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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khatoon M, Sohail MF, Shahnaz G, ur Rehman F, Fakhar-ud-Din, ur Rehman A, Ullah N, Amin U, Khan GM, Shah KU. Development and Evaluation of Optimized Thiolated Chitosan Proniosomal Gel Containing Duloxetine for Intranasal Delivery. AAPS PharmSciTech 2019; 20:288. [PMID: 31410741 DOI: 10.1208/s12249-019-1484-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 07/17/2019] [Indexed: 01/02/2023] Open
Abstract
Proniosomes offer excellent potential for improved drug delivery, through versatile routes, by overcoming the permeation barriers faced by several drugs. The study was aimed to develop a thiomer gel containing duloxetine proniosomes for the intranasal delivery, improving its bioavailability and brain delivery through olfactory system. Duloxetine-loaded proniosomes were optimized through Design-Expert Software, prepared by coacervation phase separation method and then characterized in vitro for different vesicle features, and permeation enhancement potential using various techniques. The formulation F2, out of all the trials, fulfilled the maximum requisite of highest entrapment efficiency (76.21 ± 1.24%) and minimum vesicle size (223.91 ± 11.07 nm). The F2 was embedded in thiolated chitosan gel rendering it mucoadhesive and further characterized. The in vitro release showed a sustained drug release from the mucoadhesive proniosomal gel with only 54% drug release as compared to that of 71% from proniosome over 8 h, following Higuchi drug release model. Ex vivo permeation studies showed the enhancement ratio for the mucoadhesive proniosomal gel to be 1.86-fold greater than proniosomes, indicating a significant improvement in transmucosal permeation. The results suggest that incorporation of proniosomes into thiolated gel can significantly improve its mucoadhesion and retention time in the nasal cavity for providing a sustained drug release. Thus, gel formulation could be considered as a promising approach for efficient intranasal drug delivery of duloxetine. Graphical Abstract.
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Sahne F, Mohammadi M, Najafpour GD. Single-Layer Assembly of Multifunctional Carboxymethylcellulose on Graphene Oxide Nanoparticles for Improving in Vivo Curcumin Delivery into Tumor Cells. ACS Biomater Sci Eng 2019; 5:2595-2609. [PMID: 33405765 DOI: 10.1021/acsbiomaterials.8b01628] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nanodrug delivery systems are considered as promising therapeutic platforms to convey drugs to tumor cells. In this study, a single layer of carboxymethylcellulose (CMC) and poly N-vinylpyrrolidone (PVP) was cross-linked through disulfide bond and deposited on graphene oxide nanoparticles (GO NPs) using layer-by-layer technique. Overexpression of folate receptors on tumor cells is a great hallmark for drug delivery systems; though the NPs were functionalized by monoclonal folic acid antibody (FA) using polyethylene glycol (PEG) as linker. The mean diameter of synthesized nanoparticles was 60 nm. Curcumin was encapsulated within CMC layer with high encapsulation capacity of 94%. In vitro investigation showed 87% curcumin release at simulated tumor environment. Curcumin loaded FA modified CMC/PVP GO NPs showed high inhibition of 76 and 81% against Saos2 and MCF7 cell lines in vitro. In vivo investigations on 4T1 bearing breast cancer mice model exhibited 76% antitumor efficiency via active targeting mechanism of folate mediated transport without any significant side effect. Immunohistochemistry and immunofluorescence analyses showed enhanced antiangiogenesis, apoptosis and tumor growth inhibition.
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Affiliation(s)
- Foozie Sahne
- Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani University of Technology, Shariati Avenue, Babol 47148, Iran
| | - Maedeh Mohammadi
- Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani University of Technology, Shariati Avenue, Babol 47148, Iran
| | - Ghasem D Najafpour
- Biotechnology Research Laboratory, Faculty of Chemical Engineering, Babol Noushirvani University of Technology, Shariati Avenue, Babol 47148, Iran
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Javanbakht S, Nezhad-Mokhtari P, Shaabani A, Arsalani N, Ghorbani M. Incorporating Cu-based metal-organic framework/drug nanohybrids into gelatin microsphere for ibuprofen oral delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 96:302-309. [DOI: 10.1016/j.msec.2018.11.028] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/17/2018] [Accepted: 11/21/2018] [Indexed: 12/31/2022]
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20
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Sajjad M, Khan MI, Naveed S, Ijaz S, Qureshi OS, Raza SA, Shahnaz G, Sohail MF. Folate-Functionalized Thiomeric Nanoparticles for Enhanced Docetaxel Cytotoxicity and Improved Oral Bioavailability. AAPS PharmSciTech 2019; 20:81. [PMID: 30645705 DOI: 10.1208/s12249-019-1297-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 12/28/2018] [Indexed: 02/07/2023] Open
Abstract
To achieve remotely directed delivery of anticancer drugs, surface-decorated nanoparticles with ligands are reported. In this study, folic acid- and thiol-decorated chitosan nanoparticles loaded with docetaxel (DTX-NPs) were prepared for enhanced cellular internalization in cancer cells and improved oral absorption. The DTX-NPs were explored through in vitro and in vivo parameters for various parameters. The DTX-NPs were found to be monodisperse nanoparticles with an average particle size of 158.50 ± 0.36 nm, a polydispersity index of 0.36 ± 0.0, a zeta potential of + 18.30 ± 2.52 mV, and an encapsulation efficiency of 71.47 ± 5.62%. The drug release from DTX-NPs followed the Korsmeyer-Peppas model with about 78% of drug release in 12 h. In in vitro cytotoxicity studies against folate receptor, positive MDA-MBB-231 cancerous cells showed improved cytotoxicity with IC50 of 0.58 μg/mL, which is significantly lower as compared to docetaxel (DTX). Ex vivo permeation enhancement showed an efflux ratio of 0.99 indicating successful transport across the intestine. Oral bioavailability was significantly improved as Cmax and AUC were higher than DTX suspension. Overall, the results suggest that DTX-NPs can be explored as a promising carrier for oral drug delivery.
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21
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Corneal chemical burn treatment through a delivery system consisting of TGF-β 1 siRNA: in vitro and in vivo. Drug Deliv Transl Res 2018; 8:1127-1138. [PMID: 29869292 DOI: 10.1007/s13346-018-0546-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Chemical burns are major causes of corneal blindness. Transforming growth factor beta-1 (TGFβ1) plays an important role in induction of corneal inflammation-related-fibrosis leading to the blindness. Here, a topical delivery system consisting anti-fibrotic TGF-β1 siRNA, an inflammatory suppressing gene, was designed for treatment of corneal injuries. TGF-β1 siRNA loaded in nanoparticles (NPs) made up of polyethyleneimine polymer demonstrated high fibroblast transfection efficiency. Moreover, TGF-β1 and PDGF genes and ECM deposition were suppressed in isolated human corneal fibroblasts. NPs inhibited proliferation and transformation of fibroblasts to myofibroblasts by S-phase arrest and α-SMA suppression in vitro, respectively. The mentioned finding was also confirmed in vivo, addressing high wound-healing potential of prepared gene delivery system which was superior to conventional betamethasone treatment. Besides, CD4+ and α-SMA antibody staining showed inhibited angiogenesis and myofibroblast accumulation in treated corneas. This study opens a new way for treating corneal fibrosis through topical siRNA delivery.
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Javanbakht S, Pooresmaeil M, Hashemi H, Namazi H. Carboxymethylcellulose capsulated Cu-based metal-organic framework-drug nanohybrid as a pH-sensitive nanocomposite for ibuprofen oral delivery. Int J Biol Macromol 2018; 119:588-596. [DOI: 10.1016/j.ijbiomac.2018.07.181] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/14/2018] [Accepted: 07/29/2018] [Indexed: 12/20/2022]
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23
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Javanbakht S, Nazari N, Rakhshaei R, Namazi H. Cu-crosslinked carboxymethylcellulose/naproxen/graphene quantum dot nanocomposite hydrogel beads for naproxen oral delivery. Carbohydr Polym 2018; 195:453-459. [DOI: 10.1016/j.carbpol.2018.04.103] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 04/21/2018] [Accepted: 04/26/2018] [Indexed: 11/26/2022]
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Glutathione responsive chitosan-thiolated dextran conjugated miR-145 nanoparticles targeted with AS1411 aptamer for cancer treatment. Carbohydr Polym 2018; 201:131-140. [PMID: 30241804 DOI: 10.1016/j.carbpol.2018.08.060] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/04/2018] [Accepted: 08/15/2018] [Indexed: 01/12/2023]
Abstract
miR-145 is a tumor suppressive miRNA which is abnormally reduced in different cancers. miR-145 overexpression reduces cancer migration, invasion, and cell adhesion. Increasing miR-145 level using suitable and efficient gene delivery systems could be valuable in cancer treatment. In this study, a redox-responsive miR-145 conjugated thiolated dextran (TD-miR) was prepared. Also, polyelectrolyte complexes (PECs) of TD-miR and chitosan were fabricated and decorated with anti nucleolin aptamer, AS1411 (apt-PEC). The size of the PECs was between 40-270 nm, and the zeta potential was varied according to the TD-miR to chitosan molar ratio. The outcomes of cellular studies indicated the excellence of the apt-PEC as a duel targeted delivery system and the PECs composed of chitosan 18 kDa with TD-miR to chitosan ratio of 5. TD-miR and the PECs are appropriate as the smart gene delivery systems which preserve and transfect the cargo and release it in cytoplasm.
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25
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Laffleur F. Novel adhesive hyaluronic acid based solid dosage form for pediatric application. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Zaman M, Hanif M, Sultana K, Atta-Ur-Rehman. Synthesis of thiolated arabinoxylan and its application as sustained release mucoadhesive film former. ACTA ACUST UNITED AC 2018; 13:025019. [PMID: 29176054 DOI: 10.1088/1748-605x/aa9d69] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The present work aimed to synthesize thiolated arabinoxylan (TAX), and to evaluate its mucoadhesive potential. Synthesis of TAX was accomplished by esterification of arabinoxylan (AX) with thioglycolic acid (TGA). The appearance of a characteristic peak at 2516 cm-1 in the FTIR spectrum of TAX, and presence of 6.01 ± 1.03 m moles of thiol per gram of the polymer confirmed successful thiolation of AX. The incorporation of the thiol group considerably promoted mucoadhesive strength of the polymer-viz. 3.99-fold. Moreover, in vivo safety analysis in albino rats revealed TAX to be safe in the concentration range of 750-1000 mg kg-1 body weight. Synthesized TAX was utilized to prepare Tizanidine HCl (TZN HCl) loaded sustained release (SR) mucoadhesive buccal films using a solvent casting technique. Results proved that the prepared films were of uniform thickness, good mechanical strength (with folding endurance >300), acceptable moisture contents (5%-7%) and surface pH (6.23 ± 0.81 to 6.43 ± 0.49) compatible to that of the buccal cavity. Presence of greater that 90% of drug contents indicated the excellent drug loading ability of the prepared films. Results of in vitro dissolution studies and ex vivo permeation studies conducted respectively by USP dissolution apparatus II and Franz diffusion cell indicated that sustained effect of TAX was achieved for 8 h. These results have conclusively proven that TAX has the potential to improve the bioavailability of TZN HCl due to enhanced mucoadhesion in buccal cavity, hence signifying its suitability as a mucoadhesive buccal film former.
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Affiliation(s)
- Muhammad Zaman
- Department of Pharmacy, Bahauddin Zakariya University, Multan 60800, Pakistan. Faculty of Pharmacy, The University of Lahore, Lahore, Pakistan
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Thiolated citrus low-methoxyl pectin: Synthesis, characterization and rheological and oxidation-responsive gelling properties. Carbohydr Polym 2017; 181:964-973. [PMID: 29254061 DOI: 10.1016/j.carbpol.2017.11.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/23/2017] [Accepted: 11/15/2017] [Indexed: 10/18/2022]
Abstract
In the present study, citrus low-methoxyl pectin was modified by conjugating cysteine via amide bonds, and the resultant polymer (CYS-PEC) was characterized. CYS-PEC conjugates with thiol contents varying from 77.8μmol/g to 296μmol/g were synthesized, and the successful conjugation was evidenced by elemental, and FT-IR analyses. The sulfur in CYS-PEC is predominately in the thiol form, with a minor fraction forming disulfide bonds (∼15%), which occur when thiol/disulfide interchange interrupts the intended thiolation. Both native and modified pectin dispersions exhibited strong pseudoplastic properties, and the frequency sweeps revealed them to be dispersions containing microgel particles. Dynamic viscoelastic analysis was used to determine the oxidation-response gelling capacities of polymer dispersions containing H2O2, especially those that are highly thiolated and have cross-linked gel properties. For oxidation-induced CYS-PEC gels, their gelation time, hardness, viscosity and elastic moduli and swelling-disintegration ratio are dependent on the thiol group content, H2O2 concentration and polymer concentration.
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28
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Perrone M, Lopedota A, Liberati E, Russo V, Cutrignelli A, Laquintana V, de Sousa IP, Franco M, Tongiani S, Denora N, Bernkop-Schnürch A. Natural dendrimers: Synthesis and in vitro characterization of glycogen-cysteamine conjugates. Eur J Pharm Biopharm 2017; 115:168-176. [DOI: 10.1016/j.ejpb.2017.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 01/26/2017] [Accepted: 02/25/2017] [Indexed: 10/20/2022]
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Laffleur F, Michalek M. Modified xanthan gum for buccal delivery-A promising approach in treating sialorrhea. Int J Biol Macromol 2017; 102:1250-1256. [PMID: 28487193 DOI: 10.1016/j.ijbiomac.2017.04.123] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
Abstract
AIM The aim of this study was to modify xanthan, a well-known gelling agent, in order to treat sialorrhea, which increases salivary flow due to an excessive stimulus of the salivary reflex. METHODS Chemical modification occurs by covalent attachment of l-cysteine (SH) to the polymeric backbone of xanthan (X) via amide bond formation. Safety considerations, water uptake capacity, and erosion were evaluated. Furthermore, mucoadhesiveness on buccal mucosa and vapor uptake studies were performed. In vitro/in vivo correlation of reduce of salivary flow was conducted and drug release of embedded tannin was determined. RESULTS Safety investigations ensured modified X-SH being safe to use. X-SH exposed 1.5-x higher water uptake capacity in comparison to unmodified xanthan. Then, stability of X-SH augmented 5.5-fold in the case of matrix erosion studies. Reduction of salivary flow could be obtained 1.6-fold improved in case of X-SH compared to X. Furthermore, tannin was 1.8-fold controlled released in comparison to unmodified xanthan. CONCLUSION Taking these findings into consideration, chemical modified xanthan emerged with its distinctive properties as a promising approach in treating sialorrhea.
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Affiliation(s)
- Flavia Laffleur
- Department of Pharmaceutical Technology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
| | - Martina Michalek
- Department of Pharmaceutical Technology, Institute of Pharmacy, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria
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30
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Hanif M, Zaman M. Thiolation of arabinoxylan and its application in the fabrication of controlled release mucoadhesive oral films. Daru 2017; 25:6. [PMID: 28320456 PMCID: PMC5359919 DOI: 10.1186/s40199-017-0172-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 02/28/2017] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Mucoadhesion is an important property that helps oral drug delivery system to remain attached with buccal mucosa and hence to improve the delivery of the drug. The current study was designed to achieve the thiol modification of Arabinoxylan (ARX) and to develop a mucoadhesive oral film for the improved delivery of tizanidine hydrochloride (TZN HCl). METHOD Synthesis of thiolated arabinoxylan (TARX) was accomplished by esterification of ARX with thioglycolic acid (TGA). TARX was further used for the development of mucoadhesive oral films which were prepared by using a solvent casting technique. Formulation of the films was designed and optimized by using central composite design (CCRD), selecting TARX (X1) and glycerol (X2) as variables. Prepared film formulations were evaluated for mechanical strength, ex-vivo mucoadhesion, in-vitro drug release, ex-vivo drug permeation, surface morphology and drug contents. RESULTS Thiolation of ARX was confirmed by fourier transform infra-red spectroscopy (FTIR) as a peak related to thiol group appeared at 2516 cm-1. The claim of successful thiolation of ARX was strengthened by the presence of 2809.003 ± 1.03 μmoles of thiol contents per gram of the polymer, which was determined by Ellman's reagent method. From the results, it was observed that the films were of satisfactory mechanical strength and mucoadhesiveness with folding endurance greater than 300 and mucoadhesive strength 11.53 ± 0.17 N, respectively. Reasonable drug retention was observed during in-vitro dissolution (85.03% cumulative drug release) and ex-vivo permeation (78.90% cumulative amount of permeated drug) studies conducted for 8 h. Effects of varying concentrations of both polymer and plasticizer on prepared mucoadhesive oral films were evaluated by ANOVA and it was observed that glycerol can enhanced the dissolution as well as permeation of the drug while TARX has opposite impact on these parameters. CONCLUSION In nutshell, TARX in combination with glycerolwas found to be suitable for the development of controlled release mucoadhesive oral films of TZN HCl. Schematic diagram showing conversion of ARX to TARX, TARX to oral film and evaluation of fabricated oral film.
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Affiliation(s)
- Muhammad Hanif
- Department of Pharmacy, Bahauddin Zakariya University, Multan, 60800 Pakistan
| | - Muhammad Zaman
- Department of Pharmacy, Bahauddin Zakariya University, Multan, 60800 Pakistan
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Shahnaz G, Edagwa BJ, McMillan J, Akhtar S, Raza A, Qureshi NA, Yasinzai M, Gendelman HE. Development of mannose-anchored thiolated amphotericin B nanocarriers for treatment of visceral leishmaniasis. Nanomedicine (Lond) 2017; 12:99-115. [PMID: 27879160 PMCID: PMC5144491 DOI: 10.2217/nnm-2016-0325] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/26/2016] [Indexed: 02/07/2023] Open
Abstract
AIM Our goal was to improve treatment outcomes for visceral leishmaniasis by designing nanocarriers that improve drug biodistribution and half-life. Thus, long-acting mannose-anchored thiolated chitosan amphotericin B nanocarrier complexes (MTC AmB) were developed and characterized. MATERIALS & METHODS A mannose-anchored thiolated chitosan nanocarrier was manufactured and characterized. MTC AmB was examined for cytotoxicity, biocompatibility, uptake and antimicrobial activities. RESULTS MTC AmB was rod shaped with a size of 362 nm. MTC AmB elicited 90% macrophage viability and 71-fold enhancement in drug uptake compared with native drug. The antileishmanial IC50 for MTC AmB was 0.02 μg/ml compared with 0.26 μg/ml for native drug. CONCLUSION These studies show that MTC can serve as a platform for clearance of Leishmania in macrophages.
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Affiliation(s)
- Gul Shahnaz
- Department of Pharmacy, Quaid-i-Azam University Islamabad, 45320, Pakistan
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Benson J Edagwa
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - JoEllyn McMillan
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sohail Akhtar
- Department of Entomology, University College of Agriculture & Environmental Sciences, The Islamia University, Bahawalpur, Pakistan
| | - Abida Raza
- Nuclear Medicine, Oncology & Radiotherapy Institute, Islamabad, Pakistan
| | - Naveeda A Qureshi
- Department of Animal Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Masoom Yasinzai
- Centre for Interdisciplinary Research in Basic Sciences, International Islamic University, Islamabad, Pakistan
| | - Howard E Gendelman
- Department of Pharmacology & Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Deng X, Yin Z, Zhou Z, Wang Y, Zhang F, Hu Q, Yang Y, Lu J, Wu Y, Sheng W, Zeng Y. Carboxymethyl Dextran-Stabilized Polyethylenimine-Poly(epsilon-caprolactone) Nanoparticles-Mediated Modulation of MicroRNA-34a Expression via Small-Molecule Modulator for Hepatocellular Carcinoma Therapy. ACS APPLIED MATERIALS & INTERFACES 2016; 8:17068-17079. [PMID: 27300477 DOI: 10.1021/acsami.6b03122] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
MicroRNA-34a (miR-34a) modulation therapy has shown great promise to treat hepatocellular carcinoma (HCC). 2'-Hydroxy-2,4,4',5,6'-pentamethoxychalcone, termed Rubone, has been shown to specifically upregulate miR-34a expression in HCC cells and considered as novel anticancer agent. However, the extremely low aqueous solubility of Rubone hampers its use in cancer treatment. In the present study, surface-stabilized nanoparticles-based delivery strategy was engaged to overcome this impediment. In our preparation, Rubone was encapsulated in the micelles composed of polyethylenimine-poly(epsilon-caprolactone) (PEI-PCL) through hydrophobic interactions, which were subsequently stabilized with anionic carboxymethyl dextran CMD via electronic interaction. We found that Rubone-encapsulating nanoparticles are dispersed well in aqueous solution. The results further demonstrated that Rubone could be efficiently delivered in HCC cells by nanoparticles and upregulate miR-34a expression, which in turn led to inhibition of proliferation, migration, and increased apoptosis of HCC cells. In vivo experiments showed that Rubone can be preferentially delivered into tumor tissues by CMD-stabilized PEI-PCL nanoparticles after intravenous administration and significantly inhibited tumor growth. Furthermore, low cytotoxicity of the nanoparticles was observed in vitro and in vivo analyses, indicating a good compatibility of generated nanoparticles. The obtained results suggest that CMD-stabilized PEI-PCL nanoparticles may serve as a novel approach for small-molecule-modulator-mediated miR-34a restoration for HCC therapy.
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Affiliation(s)
- Xiongwei Deng
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , No. 11 Beiyitiao, Zhongguancun, Beijing 100190, People's Republic of China
| | - Zhaoxia Yin
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Zhixiang Zhou
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Yihui Wang
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Fang Zhang
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Qin Hu
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Yishu Yang
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Jianqing Lu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , No. 11 Beiyitiao, Zhongguancun, Beijing 100190, People's Republic of China
| | - Yan Wu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology , No. 11 Beiyitiao, Zhongguancun, Beijing 100190, People's Republic of China
| | - Wang Sheng
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
| | - Yi Zeng
- College of Life Science and Bioengineering, Beijing University of Technology , No. 100 Pingleyuan, Chaoyang District, Beijing 100124, People's Republic of China
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Kiani M, Mirzazadeh Tekie FS, Dinarvand M, Soleimani M, Dinarvand R, Atyabi F. Thiolated carboxymethyl dextran as a nanocarrier for colon delivery of hSET1 antisense: In vitro stability and efficiency study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 62:771-8. [PMID: 26952483 DOI: 10.1016/j.msec.2016.02.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/01/2015] [Accepted: 02/03/2016] [Indexed: 01/10/2023]
Abstract
Gene therapy is an optimistic approach in cancer treatment. However, for efficient delivery of gene materials, designing an appropriate vector is necessary. Polyelectrolyte complexes (PECs) of chitosan and dextran could be considered a proper nanoparticulate carrier for sensitive biomaterials. In this study, PECs of chitosan and thiolated dextran were used as either an injectable or oral gene delivery system. hSET1 antisense was loaded into the PECs to suppress proliferation of colon cancer cell line. The prepared nanoparticles have ~115nm diameter size and positive zeta potential with high mucoadhesion properties. They are able to protect antisense from degradation in serum and biorelevant fluids (FaSSIF and FaSSGF). Furthermore, prepared nanoparticles demonstrated superior cellular penetration and inhibitory effect on SW480 colon cancer cell proliferation. All nanoparticles significantly down regulated hSET1 in comparison with naked antisense. It can be concluded that thiolated PECs have potential use for injectable or oral delivery of nucleic acids such as antisense.
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Affiliation(s)
- Melika Kiani
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran.
| | - Farnaz Sadat Mirzazadeh Tekie
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran.
| | - Meshkat Dinarvand
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran.
| | - Masoud Soleimani
- Stem Cell Technology Research Centre, P.O. Box 14155-3174, Tehran, Iran; Department of Hematology, School of Medical Sciences, Tarbiat Modares University, P.O. Box: 14115-111, Tehran, Iran.
| | - Rassoul Dinarvand
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran; Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
| | - Fatemeh Atyabi
- Department of Pharmaceutical Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, Iran; Nanotechnology Research Centre, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
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Sohail MF, Javed I, Hussain SZ, Sarwar S, Akhtar S, Nadhman A, Batool S, Irfan Bukhari N, Saleem RSZ, Hussain I, Shahnaz G. Folate grafted thiolated chitosan enveloped nanoliposomes with enhanced oral bioavailability and anticancer activity of docetaxel. J Mater Chem B 2016; 4:6240-6248. [DOI: 10.1039/c6tb01348a] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Folate grafted and thiolated chitosan coated nanoliposomes were evaluated to improve the oral absorption and targeted pharmacological activity of docetaxel.
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Han HS, Lee M, An JY, Son S, Ko H, Lee H, Chae YS, Kang YM, Park JH. A pH-responsive carboxymethyl dextran-based conjugate as a carrier of docetaxel for cancer therapy. J Biomed Mater Res B Appl Biomater 2015; 104:789-96. [DOI: 10.1002/jbm.b.33581] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 10/10/2015] [Accepted: 11/18/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Hwa Seung Han
- School of Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Minchang Lee
- School of Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Jae Yoon An
- School of Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Soyoung Son
- Department of Health Sciences and Technology; SAIHST, Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Hyewon Ko
- Department of Health Sciences and Technology; SAIHST, Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Hansang Lee
- School of Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Yee Soo Chae
- School of Medicine; Kyungpook National University; Daegu 700-422 Republic of Korea
| | - Young Mo Kang
- School of Medicine; Kyungpook National University; Daegu 700-422 Republic of Korea
| | - Jae Hyung Park
- School of Chemical Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
- Department of Health Sciences and Technology; SAIHST, Sungkyunkwan University; Suwon 440-746 Republic of Korea
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Laffleur F, Leder N, Barthelmes J. In vitroevaluation of thio-poly acrylic acid for intraoral delivery. Drug Deliv 2015; 23:2065-73. [DOI: 10.3109/10717544.2015.1122673] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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37
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Preparation and investigation of smart hydrogels of thiolated dextran and miR-145. J Control Release 2015; 213:e32-3. [DOI: 10.1016/j.jconrel.2015.05.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mahmood A, Bonengel S, Laffleur F, Ijaz M, Idrees MA, Hussain S, Huck CW, Matuszczak B, Bernkop-Schnürch A. Can thiolation render a low molecular weight polymer of just 20-kDa mucoadhesive? Drug Dev Ind Pharm 2015; 42:686-93. [DOI: 10.3109/03639045.2015.1061538] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Arshad Mahmood
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
| | - Sonja Bonengel
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
| | - Flavia Laffleur
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
| | - Muhammad Ijaz
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
| | - Muneeb Ahmad Idrees
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
| | - Shah Hussain
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria, and
| | - Christian W. Huck
- Institute of Analytical Chemistry and Radiochemistry, University of Innsbruck, Innsbruck, Austria, and
| | - Barbara Matuszczak
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria
| | - Andreas Bernkop-Schnürch
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innsbruck, Austria,
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A potential tailor-made hyaluronic acid buccal delivery system comprising rotigotine for Parkinson's disease? Future Med Chem 2015; 7:1225-32. [DOI: 10.4155/fmc.15.66] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Aims: Parkinson's disease (PD) affects over 10 million people around the world. Dysphagia is one of its main problems. Therefore, mucosal delivery is beneficial for patient compliance. This study aimed to synthesize mucoadhesive hyaluronic acid (HA) comprising rotigotine for the treatment of PD. Materials & methods: HA – a biocompatible, naturally occurring polysaccharide – was chemically modified with the thiol-bearing ligand cysteine ethyl ester via amide bond formation (HAC). HAC was evaluated in terms of stability, cytotoxicity, permeation enhancement, controlled drug release and mucoadhesiveness. Results: HAC showed 1.49-fold higher stability, 3.47-fold improved swelling capacity and 12.16-fold augmentation in mucoadhesion. Additionally, HAC exhibited 1.18-fold permeation enhancement over HA. Discussion: Taking the findings into consideration, HAC represents a pillar of mucosal buccal delivery in the treatment of PD.
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40
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Fang G, Tang B, Chao Y, Xu H, Gou J, Zhang Y, Xu H, Tang X. Cysteine-Functionalized Nanostructured Lipid Carriers for Oral Delivery of Docetaxel: A Permeability and Pharmacokinetic Study. Mol Pharm 2015; 12:2384-95. [DOI: 10.1021/acs.molpharmaceut.5b00081] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Guihua Fang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Bo Tang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Yanhui Chao
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Helin Xu
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Jingxin Gou
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Yu Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Hui Xu
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
| | - Xing Tang
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, China
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Kassem AA, Farid RM, Issa DAE, Khalil DS, Abd-El-Razzak MY, Saudi HI, Eltokhey HM, El-Zamarany EA. Development of mucoadhesive microbeads using thiolated sodium alginate for intrapocket delivery of resveratrol. Int J Pharm 2015; 487:305-13. [PMID: 25865569 DOI: 10.1016/j.ijpharm.2015.04.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 04/04/2015] [Accepted: 04/06/2015] [Indexed: 11/28/2022]
Abstract
Resveratrol (Res), a polyphenolic phytoalexin, had shown a promising therapeutic efficacy towards treatment of periodontal disease in vitro. This work aims to develop Res microbeads with strong mucoadhesion using thiolated alginate (TA) for local treatment of periodontal pockets. TA was synthesized by conjugating sodium alginate (A) with thioglycolic acid. Product was evaluated by IR and DSC. Both A and A:TA Res microbeads with different ratios were prepared by ionotropic gelation method. Formulations were evaluated regarding their entrapment efficiency (%EE), swelling index (SI), in vitro drug release and kinetics. Selected formula was examined for its mucoadhesion by ex vivo wash-off method, surface morphology using scanning electron microscope (SEM) and stability against light. Clinical evaluation is running.Formation of TA was confirmed. %EE for all formulations ranged from 83.72 to 104.54%. Results revealed a significant lower SI for TA rich formulation (A/TA 1:1) along with slower release rate and zero-order kinetics, in addition to powerful mucoadhesion; 26% remaining of microbeads after 1h, compared to 2% for A microbeads. SEM micrographs showed a rough surface with drug precipitation. The formula maintained its %EE after 5h exposure to direct sunlight. A/TA 1:1 mucoadhesive Res microbeads could be exploited as a prolonged drug release devices for intrapocket application.
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Affiliation(s)
- Abeer Ahmed Kassem
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia; Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
| | - Ragwa Mohamed Farid
- Department of Pharmaceutics, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Alexandria, Egypt
| | - Doaa Ahmed Elsayed Issa
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon; Department of Pharmaceutical chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Doaa Said Khalil
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dentistry, Pharos University in Alexandria, Alexandria, Egypt
| | - Mona Yehia Abd-El-Razzak
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dentistry, Tanta University, Tanta, Egypt
| | - Hussein Ibrahim Saudi
- Department of Oral Medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dentistry, Tanta University, Tanta, Egypt
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42
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Gaowa A, Horibe T, Kohno M, Tabata Y, Harada H, Hiraoka M, Kawakami K. Enhancement of anti-tumor activity of hybrid peptide in conjugation with carboxymethyl dextran via disulfide linkers. Eur J Pharm Biopharm 2015; 92:228-36. [PMID: 25801495 DOI: 10.1016/j.ejpb.2015.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 03/09/2015] [Accepted: 03/12/2015] [Indexed: 01/08/2023]
Abstract
To improve the anti-tumor activity of EGFR2R-lytic hybrid peptide, we prepared peptide-modified dextran conjugates with the disulfide bonds between thiolated carboxymethyl dextran (CMD-Cys) and cysteine-conjugated peptide (EGFR2R-lytic-Cys). In vitro release studies showed that the peptide was released from the CMD-s-s-peptide conjugate in a concentration-dependent manner in the presence of glutathione (GSH, 2μM-2mM). The CMD-s-s-peptide conjugate exhibited a similar cytotoxic activity with free peptide alone against human pancreatic cancer BxPC-3 cells in vitro. Furthermore, it was shown that the CMD-s-s-peptide conjugates were highly accumulated in tumor tissue in a mouse xenograft model using BxPC-3 cells, and the anti-tumor activity of the conjugate was more effective than that of the free peptide. In addition, the plasma concentrations of peptide were moderately increased and the elimination half-life of the peptide was prolonged after intravenous injection of CMD-s-s-peptide conjugates. These results demonstrated that the conjugate based on thiolated CMD polymer would be potentially useful carriers for the sustained release of the hybrid peptide in vivo.
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Affiliation(s)
- Arong Gaowa
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Tomohisa Horibe
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Masayuki Kohno
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Yasuhiko Tabata
- Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan
| | - Hiroshi Harada
- Department of Radiation Oncology and Image-applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masahiro Hiraoka
- Department of Radiation Oncology and Image-applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan.
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Abstract
Thiomers are the polymers modified for the mucoadhesive properties and other additive properties by incorporating thiol moieties in the backbone of the unmodified polymeric chain by substitution reactions or simple oxidation reactions. Drugs that are less soluble and permeable can be complexed with thiomers for their increased absorption through the mucosal membranes by increase in contact time and prolonged stay in body due to mucoadhesion. Immobilization of thiol group therefore increases the mucoadhesive properties of the modified polymer by 2–140-folds. The prepared thiomers are characterized and made stable by different techniques. Thiomers also give the controlled delivery of the active pharmaceutical ingredients in the body. Different polymers that are modified by thiolation are chitosan, polyacrylic acid, sodium alginate, sodium carboxy methyl cellulose, guar gum, and so forth. Thiomeric formulations are a challenge to deliver drugs with low therapeutic compatibility. Micro- and nanopreparations containing thiomers can be prepared by different techniques such as covalent crosslinking, in situ gelation, radical emulsion polymerization, and emulsification. Nowadays thiomers have wide range of applications as a promising pharmaceutical excipient in the evaluating era of pharmaceutical technology.
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Thambi T, You DG, Han HS, Deepagan VG, Jeon SM, Suh YD, Choi KY, Kim K, Kwon IC, Yi GR, Lee JY, Lee DS, Park JH. Bioreducible carboxymethyl dextran nanoparticles for tumor-targeted drug delivery. Adv Healthc Mater 2014; 3:1829-38. [PMID: 24753360 DOI: 10.1002/adhm.201300691] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/14/2014] [Indexed: 11/06/2022]
Abstract
Bioreducible carboxymethyl dextran (CMD) derivatives are synthesized by the chemical modification of CMD with lithocholic acid (LCA) through a disulfide linkage. The hydrophobic nature of LCA allows the conjugates (CMD-SS-LCAs) to form self-assembled nanoparticles in aqueous conditions. Depending on the degree of LCA substitution, the particle diameters range from 163 to 242 nm. Doxorubicin (DOX), chosen as a model anticancer drug, is effectively encapsulated into the nanoparticles with high loading efficiency (>70%). In vitro optical imaging tests reveal that the fluorescence signal of DOX quenched in the bioreducible nanoparticles is highly recovered in the presence of glutathione (GSH), a tripeptide capable of reducing disulfide bonds in the intracellular compartments. Bioreducible nanoparticles rapidly release DOX when they are incubated with 10 mm GSH, whereas the drug release is greatly retarded in physiological buffer (pH 7.4). DOX-loaded bioreducible nanoparticles exhibit higher toxicity to SCC7 cancer cells than DOX-loaded nanoparticles without the disulfide bond. Confocal laser scanning microscopy observation demonstrate that bioreducible nanoparticles can effectively deliver DOX into the nuclei of SCC7 cells. In vivo biodistribution study indicates that Cy5.5-labeled CMD-SS-LCAs selectively accumulate at tumor sites after systemic administration into tumor-bearing mice. Notably, DOX-loaded bioreducible nanoparticles exhibit higher antitumor efficacy than reduction-insensitive control nanoparticles. Overall, it is evident that bioreducible CMD-SS-LCA nanoparticles are useful as a drug carrier for cancer therapy.
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Affiliation(s)
- Thavasyappan Thambi
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Dong Gil You
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
- Biomedical Research Institute; Korea Institute of Science and Technology; Seoul 136-791 Republic of Korea
| | - Hwa Seung Han
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - V. G. Deepagan
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Sang Min Jeon
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Yung Doug Suh
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
- NanoBio Fusion Research Center, Korea Research Institute of Chemical Technology; Daejeon 305-600 Republic of Korea
| | - Ki Young Choi
- Biomedical Research Institute; Korea Institute of Science and Technology; Seoul 136-791 Republic of Korea
| | - Kwangmeyung Kim
- Biomedical Research Institute; Korea Institute of Science and Technology; Seoul 136-791 Republic of Korea
| | - Ick Chan Kwon
- Biomedical Research Institute; Korea Institute of Science and Technology; Seoul 136-791 Republic of Korea
| | - Gi-Ra Yi
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Jun Young Lee
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Doo Sung Lee
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
| | - Jae Hyung Park
- School of Chemical Engineering, College of Engineering; Sungkyunkwan University; Suwon 440-746 Republic of Korea
- NanoBio Fusion Research Center, Korea Research Institute of Chemical Technology; Daejeon 305-600 Republic of Korea
- Department of Health Sciences and Technology; SAIHST Sungkyunkwan University; Suwon 440-746 Republic of Korea
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45
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Li G, Li Y, Tang Y, Zhang Y, Zhang Y, Yin T, Xu H, Cai C, Tang X. Hydroxyethyl starch conjugates for improving the stability, pharmacokinetic behavior and antitumor activity of 10-hydroxy camptothecin. Int J Pharm 2014; 471:234-44. [DOI: 10.1016/j.ijpharm.2014.05.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 04/15/2014] [Accepted: 05/19/2014] [Indexed: 11/15/2022]
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46
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Du AW, Stenzel MH. Drug Carriers for the Delivery of Therapeutic Peptides. Biomacromolecules 2014; 15:1097-114. [DOI: 10.1021/bm500169p] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Alice W. Du
- Centre for Advanced Macromolecular
Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Martina H. Stenzel
- Centre for Advanced Macromolecular
Design, School of Chemistry, The University of New South Wales, Sydney, New South Wales, 2052, Australia
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47
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Hypoxia-responsive polymeric nanoparticles for tumor-targeted drug delivery. Biomaterials 2014; 35:1735-43. [DOI: 10.1016/j.biomaterials.2013.11.022] [Citation(s) in RCA: 259] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 11/07/2013] [Indexed: 11/22/2022]
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48
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Kuwahara Y, Miyazaki T, Shirosaki Y, Kawashita M. Effects of organic polymer addition in magnetite synthesis on the crystalline structure. RSC Adv 2014. [DOI: 10.1039/c4ra02073a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Various polymers with different functional groups and surface charges were added to the precursor solution of Fe3O4 to clarify the relationship between the chemical structure of the organic substances and the crystal structure of Fe3O4.
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Affiliation(s)
- Yoshimitsu Kuwahara
- Graduate School of Life Science and Systems Engineering
- Kyushu Institute of Technology
- Kitakyushu 808-0196, Japan
| | - Toshiki Miyazaki
- Graduate School of Life Science and Systems Engineering
- Kyushu Institute of Technology
- Kitakyushu 808-0196, Japan
| | - Yuki Shirosaki
- Frontier Research Academy for Young Researchers
- Kyushu Institute of Technology
- Kitakyushu, Japan
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49
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Drug resistance in leishmaniasis: current drug-delivery systems and future perspectives. Future Med Chem 2013; 5:1877-88. [DOI: 10.4155/fmc.13.143] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Leishmaniasis is a complex of diseases with numerous clinical manifestations for instance harshness from skin lesions to severe disfigurement and chronic systemic infection in the liver and spleen. So far, the most classical leishmaniasis therapy, despite its documented toxicities, remains pentavalent antimonial compounds. The arvailable therapeutic modalities for leishmaniasis are overwhelmed with resistance to leishmaniasis therapy. Mechanisms of classical drug resistance are often related with the lower drug uptake, increased efflux, the faster drug metabolism, drug target modifications and over-expression of drug transporters. The high prevalence of leishmaniasis and the appearance of resistance to classical drugs reveal the demand to develop and explore novel, less toxic, low cost and more promising therapeutic modalities. The review describes the mechanisms of classical drug resistance and potential drug targets in Leishmania infection. Moreover, current drug-delivery systems and future perspectives towards Leishmaniasis treatment are also covered.
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50
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Design and in vitro evaluation of a novel polymeric excipient for buccal applications. Future Med Chem 2013; 5:511-22. [PMID: 23573970 DOI: 10.4155/fmc.13.33] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The objective of this study was to develop and evaluate a more effective mucoadhesive thiomer for buccal drug-delivery systems. METHODS 2-iminothiolane was covalently attached to a chitosan backbone. A preactivation step followed, mediated by 6,6´dithionicotinamide, thiol groups were modified by disulfide bonds formation. Mucoadhesion studies were performed on buccal mucosa. In addition, water-uptake capacity, disintegration, release and cytotoxicity studies were completed. RESULTS The obtained chitosan-thiobutylamidine conjugate displayed 647.4 ± 85.23 µmol/g immobilized thiol groups. Due to the preactivation, approximately 60% of thiol groups were modified by formation of disulfide bonds. Chitosan-thiobutylamidine-mercaptonicotinamide displayed 1.8-fold higher stability and 1.6-fold higher mucoadhesive properties, respectively. The release study demonstrated a 1.4-fold more prolonged drug release compared with corresponding thiomers. CONCLUSION According to these results, preactivated thiomers demonstrate an improved stability and increased mucoadhesive properties. Therefore, they seem to be advantageous for buccal administration over corresponding thiomers and chitosan.
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