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Lin J, Shi T, Wang Y, He Z, Mu Z, Cai X, Deng H, Shen J, Liu F. Hybrid Hydrogel Loaded with Chlorhexidine⊂β-CD-MSN Composites as Wound Dressing. Int J Nanomedicine 2023; 18:1725-1740. [PMID: 37025923 PMCID: PMC10072218 DOI: 10.2147/ijn.s401705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/21/2023] [Indexed: 04/03/2023] Open
Abstract
Background Much attention has been paid to sustained drug release and anti-infection in wound management. Hydrogels, which are biocompatible materials, are promising tools for controlled drug release and infective protection during wound healing. However, hydrogels also demonstrate limitations in the highly efficient treatment of wounds because of the diffusion rate. In this work, we explored pH-sensitive hydrogels that enable ultra-long-acting drug release and sustained antibacterial properties. Methods We constructed a hybrid gelatin methacrylate (GelMA) system with sustainable antibacterial properties combining hyaluronic acid (HA)-coated mesoporous silica nanoparticles (MSN), which loaded host-guest complexes of chlorhexidine (CHX) with β-cyclodextrins (β-CD) (CHX⊂CD-MSN@HA@GelMA). The release mechanism of CHX was explored using UV-vis spectra after intermittent diffusion of CHX. The hybrid hydrogels were characterized, and the drug content in terms of the release profile, bacterial inhibition, and in vivo experiments were investigated. Results Except for dual protection from both hydrogels, MSN in the HA improved the drug loading efficiency to promote the local drug concentration. It showed that complicated CHX-loaded MSN releases CHX more gradually and over a longer duration than CHX-loaded MSNs. This demonstrated a 12-day CHX release time and antibacterial activity, primarily attributable to the capacity of β-CD to form an inclusion complex with CHX. Meanwhile, in vivo experiments revealed that the hydrogels safely promote skin wound healing and enhance therapeutic efficacy. Conclusion We constructed pH-sensitive CHX⊂CD-MSN@HA@GelMA hydrogels that enable ultra-long-acting drug release and sustained antibacterial properties. The combination of β-CD and MSN would be better suited to release a reduced rate of active molecules over time (slow delivery), making them great candidates for wound dressing anti-infection materials.
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Affiliation(s)
- Jian Lin
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Tianpeng Shi
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, People’s Republic of China
| | - Yi Wang
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Zhiqi He
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Zhixiang Mu
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Xiaojun Cai
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Hui Deng
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
- Correspondence: Hui Deng; Fen Liu, Email ;
| | - Jianliang Shen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, People’s Republic of China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People’s Republic of China
- Department of Regenerative Medicine, Vision, and Brain Health, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, People’s Republic of China
| | - Fen Liu
- Department of Histology and Embryology, Wenzhou Medical University, Wenzhou, People’s Republic of China
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Maraldi M, Lisi M, Moretti G, Sponchioni M, Moscatelli D. Health care-associated infections: Controlled delivery of cationic antiseptics from polymeric excipients. Int J Pharm 2021; 607:120956. [PMID: 34333024 DOI: 10.1016/j.ijpharm.2021.120956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/02/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Nowadays, the treatment of health care-associated infections represents a serious issue, due to the increasing number of bacterial strains resistant to traditional antibiotics. The use of antiseptics like quaternary ammonium salts and biguanides is a viable alternative to face these life-threatening infections. However, their inherent toxicity as well as the necessity of providing a sustained release to avoid the formation of pathogen biofilms are compelling obstacles towards their assessment in the hospitals. Within this framework, the role of polymeric drug delivery systems is fundamental to overcome the aforementioned problems. Biocompatibility, biodegradability and excipient-drug interactions are crucial properties determining the efficacy of the formulation. In this work, we provide an in-depth analysis of the polymer drug delivery systems that have been developed or are under development for the sustained release of positively charged antiseptics, highlighting the crucial characteristics that allowed to achieve the most relevant therapeutic effects. We reported and compared natural occurring polymers and synthetic carriers to show their pros and cons and applicability in the treatment of health care-associated infections. Then, the discussion is focused on a particularly relevant class of materials adopted for the scope, represented by polyesters, which gave rise, due to their biodegradability, to the field of resorbable drug delivery devices. Finally, a specific analysis on the effect of the polymer functionalization over the formulation performances for the different types of polymeric carriers is presented.
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Affiliation(s)
- Matteo Maraldi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Marco Lisi
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Giacomo Moretti
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
| | - Mattia Sponchioni
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy.
| | - Davide Moscatelli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Via Luigi Mancinelli 7, 20131 Milano, Italy
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3
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Guimarães PPG, de Menezes AC, Teixeira KIR, Denadai ÂML, Fills RA, Cortés ME, Sinisterra RD. Enhanced efficacy against bacterial biofilms via host:guest cyclodextrin‐doxycycline inclusion complexes. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-020-01041-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Hewitt MG, Morrison PWJ, Boostrom HM, Morgan SR, Fallon M, Lewis PN, Whitaker D, Brancale A, Varricchio C, Quantock AJ, Burton MJ, Heard CM. In Vitro Topical Delivery of Chlorhexidine to the Cornea: Enhancement Using Drug-Loaded Contact Lenses and β-Cyclodextrin Complexation, and the Importance of Simulating Tear Irrigation. Mol Pharm 2020; 17:1428-1441. [PMID: 32125863 DOI: 10.1021/acs.molpharmaceut.0c00140] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Microbial keratitis is a severe, sight-threatening condition caused by various pathogens. Eyedrops are the standard delivery modality for treating these disorders; however, blinking reflex, elevated tear production, and nasolacrimal drainage eliminate much of the instilled dose within a few seconds. Therefore, eyedrops must be applied repeatedly for prolonged periods. The present study aimed to probe more effective ocular delivery of chlorhexidine based upon drug-loaded hydrogel contact lenses and β-cyclodextrin (β-CD), while also determining the effect of constant irrigation with simulated tear fluid (STF) in in vitro experiments. Chlorhexidine digluconate (as 0.2 and 2% solutions, β-CD inclusion complexes, and loaded hydrogel contact lenses) were applied to enucleated porcine eyes as single or multiple 10 μL doses, or as drug-loaded contact lenses, with and without β-CD. The corneas were then excised and drug-extracted quantified by high-performance liquid chromatography (HPLC). The effect of constant irrigation by STF was evaluated to test the effect of increased tear production on corneal delivery. Potential antimicrobial activity of the delivered drug was also assessed. Results showed that drug-loaded contact lenses delivered the greatest amount of chlorhexidine into the cornea over a 24 h period, while the eyedrop solution comparator delivered the least. The β-CD significantly enhanced chlorhexidine delivery to the cornea from eyedrop solution, although contact lenses loaded with chlorhexidine-β-CD failed to enhance delivery. β-CD within the hydrogel matrix impeded drug release. Constant irrigation with STF significantly reduced the amount of drug delivered to the cornea in all cases. Chlorhexidine retained antimicrobial activity in all delivery methods. Hydrogel contact lenses loaded with chlorhexidine delivered significantly higher levels to the cornea compared to eyedrops, either multiple hourly doses or a single dose. They also offer reduced application, in particular, to a nonulcerated corneal infection. Finally, the importance of fully accounting for tear production in in vitro ocular delivery experiments was highlighted.
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Affiliation(s)
- Melissa G Hewitt
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K
| | - Peter W J Morrison
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K.,School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - Hannah M Boostrom
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K
| | - Siân R Morgan
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K.,School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - Melissa Fallon
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K.,School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - Philip N Lewis
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K.,School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - David Whitaker
- School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K.,School of Healthcare Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - Andrea Brancale
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K
| | - Carmine Varricchio
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K
| | - Andrew J Quantock
- School of Optometry and Vision Sciences, Cardiff University, Wales, Cardiff CF24 4HQ, U.K
| | - Matthew J Burton
- International Centre for Eye Health, Faculty of Infectious & Tropical Diseases, London School of Hygiene and Tropical Medicine, London WC1E 7HT, U.K.,Moorfields Eye Hospital NHS Foundation Trust, London EC1V 2PD, U.K
| | - Charles M Heard
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, Cardiff CF10 3NB, U.K
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Inoue BS, Streit S, Dos Santos Schneider AL, Meier MM. Bioactive bacterial cellulose membrane with prolonged release of chlorhexidine for dental medical application. Int J Biol Macromol 2020; 148:1098-1108. [PMID: 31917984 DOI: 10.1016/j.ijbiomac.2020.01.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/19/2019] [Accepted: 01/05/2020] [Indexed: 10/25/2022]
Abstract
Bioabsorbable barrier membrane is desired in dental medicine for treatment of periodontal diseases caused by different types of bacteria. Bioactive and bioabsorbable bacterial cellulose (BC) is a promising material for such application. However, a key challenge to implement this approach is produce BC membranes selectively oxidized and loaded with a bactericide, in order to modulate bioabsortion time and bactericide effect, respectively. In the present study, the drug model chlorhexidine (CHX) was chosen and NaIO4 was used as oxidizing agent. To modulate CHX release and efficacy, inclusion complexes of CHX with β-cyclodextrin (CHX:βCD) were synthesized. A linear dependence between degree of oxidation (DO) and oxidant concentration was found (DO = 2.07 + 45 [NaIO4]). CHX has strong chemical interaction with cellulose structure, contributing for its significant retention. The association of membrane oxidation and formation of the inclusion complex with βCD causes a 10-fold increase in CHX release rate compared to unmodified cellulose. Thus, validating the concept that CHX release can be modulated using these two strategies. All membranes loaded with CHX inhibited S. aureus, E. coli and C. albicans growth, but DABC+CHX:βCD showed greater inhibition zone (p < 0.05). That, associated with other results, indicates potential application as bioactive and bioabsorbable membrane.
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Affiliation(s)
- Barbara Sanay Inoue
- NIPOL, Departament of Chemistry, Santa Catarina State University (UDESC), R. Paulo Malschitzki, 200, 89219-710 Joinville, SC, Brazil
| | - Sandriele Streit
- NIPOL, Departament of Chemistry, Santa Catarina State University (UDESC), R. Paulo Malschitzki, 200, 89219-710 Joinville, SC, Brazil
| | - Andrea Lima Dos Santos Schneider
- Engineering of Process Program, University of Joinville Region (UNIVILLE), Campus Universitário, 10, 89, 201-972 Joinville, SC, Brazil
| | - Marcia Margarete Meier
- NIPOL, Departament of Chemistry, Santa Catarina State University (UDESC), R. Paulo Malschitzki, 200, 89219-710 Joinville, SC, Brazil.
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Chakraborty S, Ghosh P, Basu B, Mandal A. Inclusion complex of β-cyclodextrin with tetrabutylammonium bromide: Synthesis, characterization and interaction with calf thymus DNA. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111525] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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7
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de Carvalho FG, Magalhães TC, Teixeira NM, Gondim BLC, Carlo HL, dos Santos RL, de Oliveira AR, Denadai ÂML. Synthesis and characterization of TPP/chitosan nanoparticles: Colloidal mechanism of reaction and antifungal effect on C. albicans biofilm formation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109885. [DOI: 10.1016/j.msec.2019.109885] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 05/29/2019] [Accepted: 06/11/2019] [Indexed: 11/27/2022]
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8
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Hydrophobic nanoprecipitates formed by benzoylphenylureas and β-cyclodextrin inclusion compounds: synthesis, characterization and toxicity against aedes aegypti larvae. Heliyon 2019; 5:e02013. [PMID: 31321326 PMCID: PMC6612800 DOI: 10.1016/j.heliyon.2019.e02013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/20/2022] Open
Abstract
The aim of this work was to synthesize and characterize the inclusion compounds formed by the complexation of β-cyclodextrin (βCD) with insecticides from the class of benzoylphenylureas (BPUs), named novaluron (NOV) and diflubenzuron (DIF), beyond evaluate their larvicidal activity against Aedes aegypti larvae. Solid state characterization by FTIR showed changes in the main peaks of BPUs and βCD, suggesting the formation of inclusion compounds in solid phase. DTA and TGA thermal analysis showed changes in temperatures of BPUs decomposition as result of molecular interactions. 1H NMR experiments allowed to observe the occurrence of interactions in solution through changes in chemical shifts of BPUs aromatic hydrogens. However, the presence of H–H intermolecular correlations in 2D ROESY was found only for the DIF/βCD complex, suggesting different topology for each complex. Such hypothesis was corroborated by thermodynamic analysis using ITC, which showed different profile of titration curves, beyond endothermic and exothermic interactions for NOV/βCD and DIF/βCD complexes, respectively. DLS titrations of BPUs or BPUs/βCD DMSO solutions in aqueous solution demonstrated that the spontaneously formed hydrophobic nanoprecipitates (HNPs) have different profile of sizes depending on the BPU/βCD system, corroborating also with the hypothesis about the existence of different topologies for each complex. Finally, the HNPs of inclusion compounds showed to be more efficient than free BPUs, allowing proposing a new insecticide formulation.
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9
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Inclusion vs. micellization in the cethylpyridine chloride / β-cyclodextrin system: A structural and thermodynamic approach. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Equilibrium, structural and antibacterial characterization of moxifloxacin-β-cyclodextrin complex. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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11
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Wang J, Li Q, Yi S, Chen X. Visible-light/temperature dual-responsive hydrogel constructed by α-cyclodextrin and an azobenzene linked surfactant. SOFT MATTER 2017; 13:6490-6498. [PMID: 28880328 DOI: 10.1039/c7sm01528c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel photo-responsive anionic surfactant with a dimethylamino-substituted azobenzene located at the end of the hydrophobic chain, 6-(4-dimethylaminoazobenzene-4'-oxy)hexanoate sodium (DAH), has been designed. Through the host-guest interaction in aqueous solution, the trans-DAH could be spontaneously included by using two native α-cyclodextrin (α-CD) molecules. The formed hydrophilic inclusion complex (DAH@2α-CD), however, could act as a gelator to induce the formation of a supramolecular hydrogel, which is driven mainly by hydrogen bonds between neighboring α-CDs and also between the carboxylate in DAH and water. Compared with common hydrogels that consist of networks with fibres or discrete polymer chains, the hydrogel formed by DAH@2α-CD was composed of periodic lamellar structures possessing good shear-thinning behavior and much swollen water layers. The more interesting point for such a hydrogel was its visible-light responsibility for gel-sol reversible phase transition. This originated from the introduction of an electron-donating group (dimethylamino) to azobenzene, which noticeably red-shifted the responsive wavelength for its trans-to-cis isomerization. It was also worth noting that the host-guest interaction between azobenzene in DAH and α-CD significantly improved the photo-transition efficiency from trans to cis forms of azobenzene, which played a critical role in the visible-light responsibility of the hydrogel. This unique visible-light-responsive behavior combined with the inherent thermo-responsive property from α-CD should make the prepared hydrogel find more potential applications in biomedical systems.
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Affiliation(s)
- Jiao Wang
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, China.
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Morelli L, Cappelluti MA, Ricotti L, Lenardi C, Gerges I. An Injectable System for Local and Sustained Release of Antimicrobial Agents in the Periodontal Pocket. Macromol Biosci 2017; 17. [PMID: 28464538 DOI: 10.1002/mabi.201700103] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Indexed: 01/22/2023]
Abstract
Periodontitis treatments usually require local administration of antimicrobial drugs with the aim to reduce the bacterial load inside the periodontal pocket. Effective pharmaceutical treatments may require sustained local drug release for several days in the site of interest. Currently available solutions are still not able to fulfill the clinical need for high-quality treatments, mainly in terms of release profiles and patients' comfort. This work aims to fill this gap through the development of an in situ gelling system, capable to achieve controlled and sustained release of antimicrobial agents for medium-to-long-term treatments. The system is composed of micrometer-sized β-cyclodextrin-based hydrogel (bCD-Jef-MPs), featured by a strong hydrophilic character, suspended in a synthetic block-co-polymer solution (Poloxamer 407), which is capable to undergo rapid thermally induced sol-gel phase transition at body temperature. The chemical structure of bCD-Jef-MPs was confirmed by cross-correlating data from Fourier transform infrared (FTIR) spectroscopy, swelling test, and degradation kinetics. The thermally induced sol-gel phase transition is demonstrated by rheometric tests. The effectiveness of the described system to achieve sustained release of antimicrobial agents is demonstrated in vitro, using chlorhexidine digluconate as a drug model. The results achieved in this work disclose the potential of the mentioned system in effectively treating periodontitis lesions.
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Affiliation(s)
- Laura Morelli
- Filarete Foundation, Viale Ortles 22/4, 20139, Milano, Italy
| | | | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna, viale R. Piaggio 34, 56025, Pontedera Pisa, Italy
| | - Cristina Lenardi
- Filarete Foundation, Viale Ortles 22/4, 20139, Milano, Italy
- CIMAINA and Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133, Milano, Italy
| | - Irini Gerges
- Tensive S.r.l., Via Timavo 34, 20124, Milano, Italy
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Sikwal DR, Kalhapure RS, Jadhav M, Rambharose S, Mocktar C, Govender T. Non-ionic self-assembling amphiphilic polyester dendrimers as new drug delivery excipients. RSC Adv 2017. [DOI: 10.1039/c6ra28100a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Solubility enhancement of poorly soluble antibiotics via self-assembling nano systems could be a promising approach to effectively treat bacterial infections in the current scenario of evolving resistant species.
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Affiliation(s)
- Dhiraj R. Sikwal
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Rahul S. Kalhapure
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Mahantesh Jadhav
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Sanjeev Rambharose
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Chunderika Mocktar
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
| | - Thirumala Govender
- Discipline of Pharmaceutical Sciences
- University of KwaZulu-Natal
- Durban
- South Africa
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14
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Wang J, Yao M, Li Q, Yi S, Chen X. β-Cyclodextrin induced hierarchical self-assembly of a cationic surfactant bearing an adamantane end group in aqueous solution. SOFT MATTER 2016; 12:9641-9648. [PMID: 27858041 DOI: 10.1039/c6sm02329k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A cationic surfactant with adamantane as the end group, 1-[11-((adamantane-1-carbonyl)oxy)-undecyl]pyridinium bromide (AP), has been synthesized. Its β-cyclodextrin (β-CD) induced hierarchical self-assembling behaviors in aqueous solution were investigated using transmission or scanning electron microscopy methods and small-angle X-ray scattering measurements. Like conventional single chain surfactants, micelles could be formed by AP itself in dilute solutions. However, the dramatic phase transitions of these micelles occurred when host-guest inclusions between AP and β-CD were sequentially produced at different host/guest molar ratios (R), corresponding to the supramolecules with different chemical structures. The AP micelles could be changed into spherical unilamellar vesicles by adding β-CD to reach an R value of 1 : 1. Such vesicles then evolved into multi-wall nanotubes or hydrogels when the β-CD amount was further increased to obtain an R value of 2 : 1. The unique structural characteristics of these supramolecular aggregates come from their "monolayer-like" walls, which have rarely been reported in the past for CD/surfactant inclusion complexes. The interesting results obtained here not only enrich the β-CD/surfactant aggregation systems, but also provide a novel and facile strategy to tune the morphology and structure of aggregates.
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Affiliation(s)
- Jiao Wang
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, China.
| | - Meihuan Yao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Qintang Li
- State Key Laboratory of Cultivation Base for Nonmetal Composites and Functional Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Sijing Yi
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, China.
| | - Xiao Chen
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, China.
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Meng N, Su Y, Zhou N, Zhang M, Shao M, Fan Y, Zhu H, Yuan P, Chi C, Xiao Y. Carboxylated graphene oxide functionalized with β-cyclodextrin—Engineering of a novel nanohybrid drug carrier. Int J Biol Macromol 2016; 93:117-122. [DOI: 10.1016/j.ijbiomac.2016.08.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 08/13/2016] [Accepted: 08/17/2016] [Indexed: 11/30/2022]
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16
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Kettel MJ, Heine E, Schaefer K, Moeller M. Chlorhexidine Loaded Cyclodextrin Containing PMMA Nanogels as Antimicrobial Coating and Delivery Systems. Macromol Biosci 2016; 17. [PMID: 27647823 DOI: 10.1002/mabi.201600230] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 07/29/2016] [Indexed: 01/26/2023]
Abstract
Antimicrobial nanogels, aggregates, and films are prepared by complexation of the antiseptic and bacteriostatic agent chlorhexidine (CHX) for medical and dental applications. A series of α-, β-, and γ-cyclodextrin methacrylate (CD-MA) containing hydrophobic poly(methyl methacrylate) (PMMA) based nanogels are loaded quantitatively with CHX in aqueous dispersion. The results show that CHX is enhancedly complexed by the use of CD-MA domains in the particles structure. β-CD-MA nanogels present the highest uptake of CHX. Furthermore, it is observed that the uptake of CHX in nanogels is influenced by the hydrophobic PMMA structure. CHX acts as external cross-linker of nanogels by formation of 1:2 (CHX:CD-MA) inclusion complexes of two β-CD-MA units on the surfaces of two different nanogels. The nanogels adsorb easily onto glass surfaces by physical self-bonding and formation of a dense crosslinked nanogel film. Biological tests of the applied CHX nanogels with regard to antimicrobial efficiency are successfully performed against Staphylococcus aureus.
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Affiliation(s)
- Markus J Kettel
- DWI - Leibniz Institute for Interactive Materials e. V. and Textile and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, 52056, Aachen, Germany
| | - Elisabeth Heine
- DWI - Leibniz Institute for Interactive Materials e. V. and Textile and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, 52056, Aachen, Germany
| | - Karola Schaefer
- DWI - Leibniz Institute for Interactive Materials e. V. and Textile and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, 52056, Aachen, Germany
| | - Martin Moeller
- DWI - Leibniz Institute for Interactive Materials e. V. and Textile and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstrasse 50, 52056, Aachen, Germany
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17
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Ryzhakov A, Do Thi T, Stappaerts J, Bertoletti L, Kimpe K, Sá Couto AR, Saokham P, Van den Mooter G, Augustijns P, Somsen GW, Kurkov S, Inghelbrecht S, Arien A, Jimidar MI, Schrijnemakers K, Loftsson T. Self-Assembly of Cyclodextrins and Their Complexes in Aqueous Solutions. J Pharm Sci 2016; 105:2556-2569. [DOI: 10.1016/j.xphs.2016.01.019] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/19/2016] [Accepted: 01/21/2016] [Indexed: 12/12/2022]
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18
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Kfoury M, Balan R, Landy D, Nistor D, Fourmentin S. Investigation of the complexation of essential oil components with cyclodextrins. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1051977] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Miriana Kfoury
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), ULCO, F-59140 Dunkerque, France
- Bioactive Molecules Research Group, Department of Chemistry and Biochemistry, Faculty of Sciences-2, Doctoral School of Science and Technology, Lebanese University, Fanar, Lebanon
| | - Ramona Balan
- Department of Chemical and Food Engineering, University Vasile Alecsandri, 600115 Bacau, Roumania
| | - David Landy
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), ULCO, F-59140 Dunkerque, France
| | - Denisa Nistor
- Department of Chemical and Food Engineering, University Vasile Alecsandri, 600115 Bacau, Roumania
| | - Sophie Fourmentin
- Unité de Chimie Environnementale et Interactions sur le Vivant (UCEIV), ULCO, F-59140 Dunkerque, France
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19
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Claveria-Gimeno R, Vega S, Grazu V, de la Fuente JM, Lanas A, Velazquez-Campoy A, Abian O. Rescuing compound bioactivity in a secondary cell-based screening by using γ-cyclodextrin as a molecular carrier. Int J Nanomedicine 2015; 10:2249-59. [PMID: 25834436 PMCID: PMC4371900 DOI: 10.2147/ijn.s79480] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In vitro primary screening for identifying bioactive compounds (inhibitors, activators or pharmacological chaperones) against a protein target results in the discovery of lead compounds that must be tested in cell-based efficacy secondary screenings. Very often lead compounds do not succeed because of an apparent low potency in cell assays, despite an excellent performance in primary screening. Primary and secondary screenings differ significantly according to the conditions and challenges the compounds must overcome in order to interact with their intended target. Cellular internalization and intracellular metabolism are some of the difficulties the compounds must confront and different strategies can be envisaged for minimizing that problem. Using a novel screening procedure we have identified 15 compounds inhibiting the hepatitis C NS3 protease in an allosteric fashion. After characterizing biophysically the interaction with the target, some of the compounds were not able to inhibit viral replication in cell assays. In order to overcome this obstacle and potentially improve cellular internalization three of these compounds were complexed with γ-cyclodextrin. Two of them showed a five- and 16-fold activity increase, compared to their activity when delivered as free compounds in solution (while γ-cyclodextrin did not show antiviral activity by itself). The most remarkable result came from a third compound that showed no antiviral activity in cell assays when delivered free in solution, but its γ-cyclodextrin complex exhibited a 50% effective concentration of 5 μM. Thus, the antiviral activity of these compounds can be significantly improved, even completely rescued, using γ-cyclodextrin as carrier molecule.
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Affiliation(s)
- Rafael Claveria-Gimeno
- Instituto Aragonés de Ciencias de la Salud (IACS), Zaragoza, Spain
- IIS Aragón, Zaragoza, Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Unit IQFR-CSIC-BIFI, Universidad de Zaragoza, Zaragoza, Spain
| | - Sonia Vega
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Unit IQFR-CSIC-BIFI, Universidad de Zaragoza, Zaragoza, Spain
| | - Valeria Grazu
- Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, Zaragoza, Spain
| | - Jesús M de la Fuente
- Instituto de Nanociencia de Aragon (INA), Universidad de Zaragoza, Zaragoza, Spain
- Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC-Universidad de Zaragoza, Zaragoza, Spain
- Institute NanoBiomedicine and Engineering, Shanghai Jiao Tong University, Shanghai, People’s Republic of China
| | - Angel Lanas
- IIS Aragón, Zaragoza, Spain
- Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
- Servicio de Aparato Digestivo, Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
- Department of Medicine, University of Zaragoza, Zaragoza, Spain
| | - Adrian Velazquez-Campoy
- IIS Aragón, Zaragoza, Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Unit IQFR-CSIC-BIFI, Universidad de Zaragoza, Zaragoza, Spain
- Fundacion ARAID, Government of Aragon, Spain
| | - Olga Abian
- Instituto Aragonés de Ciencias de la Salud (IACS), Zaragoza, Spain
- IIS Aragón, Zaragoza, Spain
- Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint Unit IQFR-CSIC-BIFI, Universidad de Zaragoza, Zaragoza, Spain
- Centro de Investigación Biomédica en Red en el Área Temática de Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
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20
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Nascimento LO, Goulart PP, Correa JL, Abrishamkar A, Da Silva JG, Mangrich AS, de França AA, Denadai ÂM. Molecular and supramolecular characterization of Ni(II)/losartan hydrophobic nanoprecipitate. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Lavoine N, Tabary N, Desloges I, Martel B, Bras J. Controlled release of chlorhexidine digluconate using β-cyclodextrin and microfibrillated cellulose. Colloids Surf B Biointerfaces 2014; 121:196-205. [DOI: 10.1016/j.colsurfb.2014.06.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 04/27/2014] [Accepted: 06/06/2014] [Indexed: 01/26/2023]
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22
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Kaldybekova GM, Kemel’bekov US, Abdildanova AA, Praliev KD, Volynkin VA, Nasyrova SR, Imashova SO, Pichkhadze GM. Preparation of an Inclusion Complex of 1-(3-n-butoxypropyl)-4-vinylacetylen-4-benzoyloxypiperidine with B-cyclodextrin and its Local Anesthetic Activity. Pharm Chem J 2014. [DOI: 10.1007/s11094-014-1076-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Suárez DF, Consuegra J, Trajano VC, Gontijo SML, Guimarães PPG, Cortés ME, Denadai ÂL, Sinisterra RD. Structural and thermodynamic characterization of doxycycline/β-cyclodextrin supramolecular complex and its bacterial membrane interactions. Colloids Surf B Biointerfaces 2014; 118:194-201. [PMID: 24816509 DOI: 10.1016/j.colsurfb.2014.01.028] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 12/10/2013] [Accepted: 01/20/2014] [Indexed: 10/25/2022]
Abstract
Doxycycline is a semi-synthetic antibiotic commonly used for the treatment of many aerobic and anaerobic bacteria. It inhibits the activity of matrix metalloproteinases (MMPs) and affects cell proliferation. In this study, the structural and thermodynamic parameters of free DOX and a DOX/βCD complex were investigated, as well as their interactions and effects on Staphylococcus aureus cells and cellular cytotoxicity. Complexation of DOX and βCD was confirmed to be an enthalpy- and entropy-driven process, and a low equilibrium constant was obtained. Treatment of S. aureus with higher concentrations of DOX or DOX/βCD resulted in an exponential decrease in S. aureus cell size, as well as a gradual neutralization of zeta potential. These thermodynamic profiles suggest that ion-pairing and hydrogen bonding interactions occur between DOX and the membrane of S. aureus. In addition, the adhesion of βCD to the cell membrane via hydrogen bonding is hypothesized to mediate a synergistic effect which accounts for the higher activity of DOX/βCD against S. aureus compared to pure DOX. Lower cytotoxicity and induction of osteoblast proliferation was also associated with DOX/βCD compared with free DOX. These promising findings demonstrate the potential for DOX/βCD to mediate antimicrobial activity at lower concentrations, and provides a strategy for the development of other antimicrobial formulations.
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Affiliation(s)
- Diego F Suárez
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil
| | - Jessika Consuegra
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil
| | - Vivianne C Trajano
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil(1)
| | - Sávio M L Gontijo
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil(1)
| | - Pedro P G Guimarães
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil
| | - Maria E Cortés
- Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil(1)
| | - Ângelo L Denadai
- Departamento de Farmácia, Universidade Federal de Juiz de Fora, UFJF, Campus Governador Valadares, MG. Av. Dr. Raimundo Monteiro de Rezende 330, Centro, 35010-177, Governador Valadares, MG, Brazil
| | - Rubén D Sinisterra
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil.
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Teixeira KIR, Denadai AML, Sinisterra RD, Cortés ME. Cyclodextrin modulates the cytotoxic effects of chlorhexidine on microrganisms and cellsin vitro. Drug Deliv 2014; 22:444-53. [DOI: 10.3109/10717544.2013.879679] [Citation(s) in RCA: 14] [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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25
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Danciu C, Soica C, Oltean M, Avram S, Borcan F, Csanyi E, Ambrus R, Zupko I, Muntean D, Dehelean CA, Craina M, Popovici RA. Genistein in 1:1 inclusion complexes with ramified cyclodextrins: theoretical, physicochemical and biological evaluation. Int J Mol Sci 2014; 15:1962-82. [PMID: 24473144 PMCID: PMC3958832 DOI: 10.3390/ijms15021962] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 12/30/2013] [Accepted: 01/15/2014] [Indexed: 11/16/2022] Open
Abstract
Genistein is one of the most studied phytocompound in the class of isoflavones, presenting a notable estrogenic activity and in vitro and/or in vivo benefits in different types of cancer such as those of the bladder, kidney, lung, pancreatic, skin and endometrial cancer. A big inconvenience for drug development is low water solubility, which can be solved by using hydrophilic cyclodextrins. The aim of this study is to theoretically analyze, based on the interaction energy, the possibility of a complex formation between genistein (Gen) and three different ramified cyclodextrins (CD), using a 1:1 molar ratio Gen:CD. Theoretical data were correlated with a screening of both in vitro and in vivo activity. Proliferation of different human cancer cell lines, antimicrobial activity and angiogenesis behavior was analyzed in order to see if complexation has a beneficial effect for any of the above mentioned activities and if so, which of the three CDs is the most suitable for the incorporation of genistein, and which may lead to future improved pharmaceutical formulations. Results showed antiproliferative activity with different IC50 values for all tested cell lines, remarkable antimicrobial activity on Bacillus subtilis and antiangiogenic activity as revealed by CAM assay. Differences regarding the intensity of the activity for pure and the three Gen complexes were noticed as explained in the text. The data represent a proof that the three CDs can be used for furtherer research towards practical use in the pharmaceutical and medical field.
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Affiliation(s)
- Corina Danciu
- Faculty of Pharmacy, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Codruta Soica
- Faculty of Pharmacy, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Mircea Oltean
- Faculty of Physics, Babes-Bolyai University, Kogalniceanu 1, 400084 Cluj-Napoca, Romania.
| | - Stefana Avram
- Faculty of Pharmacy, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Florin Borcan
- Faculty of Pharmacy, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Erzsebet Csanyi
- Department of Pharmaceutical Technology, University of Szeged, 6 Eotvos Str, H-6720 Szeged, Hungary.
| | - Rita Ambrus
- Department of Pharmaceutical Technology, University of Szeged, 6 Eotvos Str, H-6720 Szeged, Hungary.
| | - Istvan Zupko
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, 6 Eotvos Str, H-6720 Szeged, Hungary.
| | - Delia Muntean
- Faculty of Medicine, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Cristina A Dehelean
- Faculty of Pharmacy, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Marius Craina
- Faculty of Medicine, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania.
| | - Ramona A Popovici
- Faculty of Dental Medicine, University of Medicine and Pharmacy "Victor Babeş", Eftimie Murgu Square, No. 2, 300041 Timişoara, Romania,.
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Tabary N, Chai F, Blanchemain N, Neut C, Pauchet L, Bertini S, Delcourt-Debruyne E, Hildebrand HF, Martel B. A chlorhexidine-loaded biodegradable cellulosic device for periodontal pockets treatment. Acta Biomater 2014; 10:318-29. [PMID: 24090988 DOI: 10.1016/j.actbio.2013.09.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 09/19/2013] [Accepted: 09/24/2013] [Indexed: 10/26/2022]
Abstract
Absorbent points widely used in endodontic therapy were transformed into bioresorbable chlorhexidine delivery systems for the treatment of the periodontal pocket by preventing its recolonization by the subgingival microflora. These paper points (PPs) were first oxidized to promote their resorption, then grafted with β-cyclodextrin (CD) or maltodextrin (MD) in order to achieve sustained delivery of chlorhexidine. We investigated the oxidation step parameters through the time of reaction and the nitric and phosphoric acid ratios in the oxidizing mixture, and then the dextrin grafting step parameters through the time and temperature of reaction. A first selection of the appropriate functionalization parameters was undertaken in relation to the degradation profile kinetics of the oxidized (PPO) and oxidized-grafted samples (PPO-CD and PPO-MD). Samples were then loaded with chlorhexidine digluconate (digCHX), a widely used antiseptic agent in periodontal therapy. The release kinetics of digCHX from PPO-CD and PPO-MD samples were compared to PP, PPO and to PerioChip(®) (a commercial digCHX containing gelatine chip) in phosphate buffered saline (pH 7.4) by ultraviolet spectrophotometry. The cytocompatibility of the oxidized-grafted PP was demonstrated by cell proliferation assays. Finally, the disc diffusion test from digCHX loaded PPO-MD samples immersed in human plasma was developed on pre-inoculated agar plates with four common periodontal pathogenic strains: Fusobacterium nucleatum, Prevotella melaninogenica, Aggregatibacter actinomycetem comitans and Porphyromonas gingivalis. To conclude, the optimized oxidized-dextrin-grafted PPs responded to our initial specifications in terms of resorption and digCHX release rates and therefore could be adopted as a reliable complementary periodontal therapy.
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27
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Denadai ÂM, Da Silva JG, Guimarães PP, Gomes LBS, Mangrich AS, de Rezende EI, Daniel IM, Beraldo H, Sinisterra RD. Control of size in losartan/copper(II) coordination complex hydrophobic precipitate. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:3916-22. [DOI: 10.1016/j.msec.2013.05.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 02/11/2013] [Accepted: 05/13/2013] [Indexed: 11/16/2022]
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Finger S, Wiegand C, Buschmann HJ, Hipler UC. Antibacterial properties of cyclodextrin-antiseptics-complexes determined by microplate laser nephelometry and ATP bioluminescence assay. Int J Pharm 2013; 452:188-93. [PMID: 23665083 DOI: 10.1016/j.ijpharm.2013.04.080] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 04/30/2013] [Indexed: 02/02/2023]
Abstract
Cyclodextrins (CDs) are able to form inclusion complexes with other molecules, thereby, protecting these guest molecules from degradation, enhancing their biocompatibility or influencing their physiological distribution while retaining their activity. Here, antibacterial effects of CD-complexes with the antiseptics chlorhexidine diacetate (CHX), iodine (IOD) and polihexanide (PHMB) were determined using two different in vitro methods, microplate laser nephelometry and an ATP bioluminescence assay. Laser nephelometry is a direct method for monitoring and evaluating growth of micro-organisms by measurement of the turbidity of the solution. In contrast, the ATP bioluminescence assay determines specifically the amount of metabolic active bacterial cells. The antibacterial effects of CD-antiseptics-complexes were examined for Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus and Staphylococcus epidermidis and the results of both methods were compared in respect of calculated means of half maximal inhibitory concentrations (IC50) and statistical evaluated Pearson's correlation coefficients (r). It could be demonstrated that both methods showed a high comparability although they differ in the parameters tested. This study revealed that CD-complexes with CHX and PHMB were most effective against E. coli and the tested staphylococci. While CD-IOD-complexes obtained high activity against K. pneumoniae, P. aeruginosa was distinctly more resistant compared to the other bacteria.
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Affiliation(s)
- Susanne Finger
- Department of Dermatology, University Medical Center Jena, Germany.
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29
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Sun T, Ma M, Yan H, Shen J, Su J, Hao A. Vesicular particles directly assembled from the cyclodextrin/UR-144 supramolecular amphiphiles. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.02.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Oliveira F, Denadai A, Guerra L, Fulgêncio F, Windmöller D, Santos G, Fernandes N, Yoshida M, Donnici C, Magalhães W, Machado J. Positronium formation studies in crystalline molecular complexes: Triphenylphosphine oxide – Acetanilide. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2012.12.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Consuegra J, de Lima ME, Santos D, Sinisterra RD, Cortés ME. Peptides: β-cyclodextrin inclusion compounds as highly effective antimicrobial and anti-epithelial proliferation agents. J Periodontol 2013; 84:1858-68. [PMID: 23510146 DOI: 10.1902/jop.2013.120679] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The use of antimicrobial peptides (AMPs) as therapeutic agents for periodontal infections has great advantages, such as broad spectrum of action, low toxicity, and limited bacterial resistance. However, their practical use is limited because of the large amount of peptide required to exercise the microbicidal function. METHODS LyeTxI, LL37f, and KR12 cationic peptides were prepared with β-cyclodextrin (βCD) at 1:1 molar ratios. The susceptibility of Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, and Fusobacterium nucleatum were assessed in anaerobic conditions. Cytotoxicity assays were performed using osteoblast and Caco-2 epithelial cells, and hemolytic activity was assessed on rabbit erythrocytes at an absorbance of 414 nm. Parameters of surface roughness and electrical charge were established by atomic force microscopy and zeta (ζ) potential, respectively. RESULTS AMP/βCDs drastically decreased the peptide concentration required for activity against the bacteria tested. Moreover, AMPs associated with βCD were able to modify cell-surface parameters, such as roughness and ζ potential. On the other hand, AMP/βCD did not alter the degree of hemolysis induced by the pure AMPs. The effective concentration at half-maximum values of the peptides and compounds on osteoblasts were greater than the concentrations required to achieve inhibition of bacterial growth in all the species tested. AMP/βCDs inhibited the proliferation of Caco-2 epithelial cells in a more efficient manner than AMPs alone. CONCLUSION AMP/βCD compounds more effectively inhibit periodontopathogenic bacteria than AMPs alone, with the additional ability of inhibiting the proliferation of epithelial cells at concentrations that are non-cytotoxic for osteoblasts and erythrocytes.
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Affiliation(s)
- Jessika Consuegra
- Department of Physiology and Biophysics, Biologic Science Institute (ICB), Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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MacGillivray BC, Macartney DH. Cucurbit[7]uril Host-Guest Complexes with Biguanidinium Cations in Aqueous Solution. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201655] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Insights into the multi-equilibrium, superstructure system based on β-cyclodextrin and a highly water soluble guest. Int J Pharm 2012; 439:207-15. [DOI: 10.1016/j.ijpharm.2012.09.039] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Revised: 09/03/2012] [Accepted: 09/17/2012] [Indexed: 12/17/2022]
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34
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Sun T, Shen J, Yan H, Hao J, Hao A. Stable vesicles assembled by “supramolecular amphiphiles” with double hydrophobic chains. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.08.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Positronium formation studies in solid molecular complexes: Triphenylphosphine oxide–triphenylmethanol. J Mol Struct 2012. [DOI: 10.1016/j.molstruc.2012.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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How to conduct and interpret ITC experiments accurately for cyclodextrin–guest interactions. Drug Discov Today 2012; 17:623-9. [DOI: 10.1016/j.drudis.2012.01.023] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 12/08/2011] [Accepted: 01/26/2012] [Indexed: 01/01/2023]
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Teixeira KIR, Araújo PV, Sinisterra RD, Cortés ME. Chlorhexidine: beta-cyclodextrin inhibits yeast growth by extraction of ergosterol. Braz J Microbiol 2012; 43:810-8. [PMID: 24031894 PMCID: PMC3768818 DOI: 10.1590/s1517-83822012000200047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 02/03/2011] [Accepted: 06/07/2012] [Indexed: 11/25/2022] Open
Abstract
Chlorhexidine (Cx) augmented with beta-cyclodextrin (β-cd) inclusion compounds, termed Cx:β-cd complexes, have been developed for use as antiseptic agents. The aim of this study was to examine the interactions of Cx:β-cd complexes, prepared at different molecular ratios, with sterol and yeast membranes. The Minimal Inhibitory Concentration (MIC) against the yeast Candida albicans (C.a.) was determined for each complex; the MICs were found to range from 0.5 to 2 μg/mL. To confirm the MIC data, quantitative analysis of viable cells was performed using trypan blue staining. Mechanistic characterization of the interactions that the Cx:β-cd complexes have with the yeast membrane and assessment of membrane morphology following exposure to Cx:β-cd complexes were performed using Sterol Quantification Method analysis (SQM) and scanning electron microscopy (SEM). SQM revealed that sterol extraction increased with increasing β-cd concentrations (1.71 ×103; 1.4 ×103; 3.45 ×103, and 3.74 ×103 CFU for 1:1, 1:2, 1:3, and 1:4, respectively), likely as a consequence of membrane ergosterol solubilization. SEM images demonstrated that cell membrane damage is a visible and significant mechanism that contributes to the antimicrobial effects of Cx:β-cd complexes. Cell disorganization increased significantly as the proportion of β-cyclodextrin present in the complex increased. Morphology of cells exposed to complexes with 1:3 and 1:4 molar ratios of Cx:β-cd were observed to have large aggregates mixed with yeast remains, representing more membrane disruption than that observed in cells treated with Cx alone. In conclusion, nanoaggregates of Cx:β-cd complexes block yeast growth via ergosterol extraction, permeabilizing the membrane by creating cluster-like structures within the cell membrane, possibly due to high amounts of hydrogen bonding.
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Affiliation(s)
- K I R Teixeira
- Faculdade de Odontologia, Departamento de Odontologia Restauradora, Universidade Federal de Minas Gerais , Belo Horizonte, MG , Brasil
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Lula I, De Sousa FB, Denadai ÂM, de Lima GF, Duarte HA, dos Mares Guia TR, Faljoni-Alario A, Santoro MM, de Camargo AC, dos Santos RA, Sinisterra RD. Interaction between bradykinin potentiating nonapeptide (BPP9a) and β-cyclodextrin: A structural and thermodynamic study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.10.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Teixeira KIR, Araújo PV, Neves BRA, Mahecha GAB, Sinisterra RD, Cortés ME. Ultrastructural changes in bacterial membranes induced by nano-assemblies β-cyclodextrin chlorhexidine: SEM, AFM, and TEM evaluation. Pharm Dev Technol 2012; 18:600-8. [PMID: 22260726 DOI: 10.3109/10837450.2011.649853] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chemical hosts bind their guests by the same physical mechanisms as biomolecules and often display similarly subtle structure activity relationships. The cyclodextrins have found increasing application as inert, nontoxic carriers of active compounds in drug formulations. The present study was conducted to prepare inclusion complexes of chlorhexidine:β-cyclodextrin (Cx:β-cd), and evaluate their interactions with bacterial membrane through: scanning electron microscopy (SEM) and transmission electron microscopy (TEM); and measuring morphology alterations, roughness values, and cell weights by atomic force microscopy (AFM). It was found that the antimicrobial activity was significantly enhanced by cyclodextrin encapsulation. SEM analysis images demonstrated recognizable cell membrane structural changes and ultrastructural membrane swelling. By TEM, cellular alterations such as vacuolization, cellular leakage, and membrane defects were observed; these effects were enhanced at 1:3 and 1:4 Cx:β-cd. In addition, AFM analysis at these ratios showed substantially more membrane disruption and large aggregates mixing with microorganism remains. In conclusion, nanoaggregates formed by cyclodextrin inclusion compounds create cluster-like structures with the cell membrane, possibly due to a hydrogen rich bonding interaction system with increasing surface roughness and possibly increasing the electrostatic interaction between cationic chlorhexidine with the lipopolysaccharides of Gram negative bacteria.
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De Sousa FB, Lima AC, Denadai AML, Anconi CPA, De Almeida WB, Novato WTG, Dos Santos HF, Drum CL, Langer R, Sinisterra RD. Superstructure based on β-CD self-assembly induced by a small guest molecule. Phys Chem Chem Phys 2012; 14:1934-44. [PMID: 22234498 DOI: 10.1039/c2cp22768a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The size, shape and surface chemistry of nanoparticles play an important role in cellular interaction. Thus, the main objective of the present study was the determination of the β-cyclodextrin (β-CD) self-assembly thermodynamic parameters and its structure, aiming to use these assemblies as a possible controlled drug release system. Light scattering measurements led us to obtain the β-CD's critical aggregation concentration (cac) values, and consequently the thermodynamic parameters of the β-CD spontaneous self-assembly in aqueous solution: Δ(agg)G(o) = -16.31 kJ mol(-1), Δ(agg)H(o) = -26.48 kJ mol(-1) and TΔ(agg)S(o) = -10.53 kJ mol(-1) at 298.15 K. Size distribution of the self-assembled nanoparticles below and above cac was 1.5 nm and 60-120 nm, respectively. The number of β-CD molecules per cluster and the second virial coefficient were identified through Debye's plot and molecular dynamic simulations proposed the three-fold assembly for this system below cac. Ampicillin (AMP) was used as a drug model in order to investigate the key role of the guest molecule in the self-assembly process and the β-CD:AMP supramolecular system was studied in solution, aiming to determine the structure of the supramolecular aggregate. Results obtained in solution indicated that the β-CD's cac was not affected by adding AMP. Moreover, different complex stoichiometries were identified by nuclear magnetic resonance and isothermal titration calorimetry experiments.
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Affiliation(s)
- Frederico B De Sousa
- Laboratório de Encapsulamento Molecular e Biomateriais (LEMB), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, 31270-901, MG, Brazil
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Xin F, Zhang H, An W, Sun L, Hao A, Li Y. Vesicles Prepared from Inclusion Complexes Between Cyclodextrins and Ethyl Benzoate. J DISPER SCI TECHNOL 2012. [DOI: 10.1080/01932691.2010.528671] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Denadai ÂM, de Oliveira AM, Daniel IM, Carneiro LA, Ribeiro KC, Beraldo HDO, da Costa KJ, da Cunha VC, Cortés ME, Sinisterra RD. Chlorhexidine/losartan ionic pair binding and its nanoprecipitation: physico-chemical characterisation and antimicrobial activity. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.642101] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Passos JJ, De Sousa FB, Lula IS, Barreto EA, Lopes JF, De Almeida WB, Sinisterra RD. Multi-equilibrium system based on sertraline and β-cyclodextrin supramolecular complex in aqueous solution. Int J Pharm 2011; 421:24-33. [DOI: 10.1016/j.ijpharm.2011.09.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 07/26/2011] [Accepted: 09/14/2011] [Indexed: 11/25/2022]
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Complex formation of chlorhexidine gluconate with hydroxypropyl-β-cyclodextrin (HPβCD) by proton nuclear magnetic resonance spectroscopy (1H NMR). Carbohydr Res 2011; 346:1037-46. [DOI: 10.1016/j.carres.2011.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 03/09/2011] [Accepted: 03/16/2011] [Indexed: 11/23/2022]
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de Paula WX, Denadai ÂM, Santoro MM, Braga AN, Santos RA, Sinisterra RD. Supramolecular interactions between losartan and hydroxypropyl-β-CD: ESI mass-spectrometry, NMR techniques, phase solubility, isothermal titration calorimetry and anti-hypertensive studies. Int J Pharm 2011; 404:116-23. [DOI: 10.1016/j.ijpharm.2010.11.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 11/03/2010] [Accepted: 11/10/2010] [Indexed: 10/18/2022]
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Zhang H, Liu Z, Xin F, An W, Hao A, Li J, Li Y, Sun L, Sun T, Zhao W, Li Y, Kong L. Successively-responsive drug-carrier vesicles assembled by ‘supramolecular amphiphiles’. Carbohydr Res 2011; 346:294-304. [DOI: 10.1016/j.carres.2010.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2010] [Revised: 06/06/2010] [Accepted: 11/10/2010] [Indexed: 10/18/2022]
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Sun T, Li Y, Zhang H, Li J, Xin F, Kong L, Hao A. pH-reversible vesicles based on the “supramolecular amphiphilies” formed by cyclodextrin and anthraquinone derivate. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2010.11.067] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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An W, Zhang H, Sun L, Hao A, Hao J, Xin F. Reversible vesicles based on one and two head supramolecular cyclodextrin amphiphile induced by methanol. Carbohydr Res 2010; 345:914-21. [DOI: 10.1016/j.carres.2010.02.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Accepted: 02/01/2010] [Indexed: 11/30/2022]
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Sun L, Zhang H, An W, Hao A, Hao J. Vesicles prepared by β-cyclodextrins Inclusion complexes based on switching supramolecular interaction models induced by mixed solvents. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-010-9785-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Denadai ÂM, Santoro MM, Texeira AV, Sinisterra RD. New insights regarding the cyclodextrin/AAS self-assembly: A molar ratio dependent system. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010. [DOI: 10.1016/j.msec.2009.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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