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6-Triazolyl-6-deoxy-β-cyclodextrin derivatives: synthesis, cellular toxicity, and phase-solubility study. Carbohydr Res 2014; 391:22-8. [PMID: 24751856 DOI: 10.1016/j.carres.2014.03.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 02/23/2014] [Accepted: 03/18/2014] [Indexed: 11/21/2022]
Abstract
Heptakis{6-(4-hydroxymethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}-β-cyclodextrin (HTβCD) and heptakis{6-(4-sulfonylmethyl-1H-[1,2,3]triazol-1-yl)-6-deoxy}-β-cyclodextrin (STβCD) were prepared using copper(I)-catalyzed azide-alkyne cycloaddition between 6-azido-6-deoxy-β-CD and one of two alkynes, propargyl alcohol, and sodium propargyl sulfonate, respectively. The structures of HTβCD and STβCD were characterized by NMR techniques. NMR interpretations and computer modeling suggested that the limited freedom of rotation of the triazole moieties keeps HTβCD and STβCD rigid and compact. Water solubility tests of HTβCD and STβCD showed that the minimum water solubility of HTβCD and STβCD is at least 20times higher than that of β-CD. MTT assay showed that HTβCD and STβCD did not influence the cell viability under 1mM. A phase-solubility study of prednisolone with the CD derivatives showed increased solubility of prednisolone in the presence of increasing concentrations of HTβCD and STβCD.
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Abstract
Loading drugs into carriers such as liposomes can increase the therapeutic ratio by reducing drug concentrations in normal tissues and raising their concentrations in tumors. Although this strategy has proven advantageous in certain circumstances, many drugs are highly hydrophobic and nonionizable and cannot be loaded into liposomes through conventional means. We hypothesized that such drugs could be actively loaded into liposomes by encapsulating them into specially designed cyclodextrins. To test this hypothesis, two hydrophobic drugs that had failed phase II clinical trials because of excess toxicity at deliverable doses were evaluated. In both cases, the drugs could be remotely loaded into liposomes after their encapsulation (preloading) into cyclodextrins and administered to mice at higher doses and with greater efficacy than possible with the free drugs.
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103
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Blasi P, Schoubben A, Giovagnoli S, Rossi C, Ricci M. The real value of novel particulate carriers for sunscreen formulation. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/edm.11.57] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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104
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Tang D, Jiang X, Liu H, Li C, Zhao Y. Synthesis and properties of heterografted toothbrush-like copolymers with alternating PEG and PCL grafts and tunable RAFT-generated segments. Polym Chem 2014. [DOI: 10.1039/c4py00332b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Novel (A-g-D)(B-alt-C)mD-type heterografted toothbrush-like copolymers with great potential in smart drug delivery systems and thermo-responsive surface materials are investigated.
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Affiliation(s)
- Dandan Tang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Xiao Jiang
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Huanhuan Liu
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Cangxia Li
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
| | - Youliang Zhao
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application
- Department of Polymer Science and Engineering
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
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105
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Potier J, Menuel S, Azaroual N, Monflier E, Hapiot F. Limits of the Inversion Phenomenon in Triazolyl-Substituted β-Cyclodextrin Dimers. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301681] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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106
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Shi Y, Goodisman J, Dabrowiak JC. Cyclodextrin capped gold nanoparticles as a delivery vehicle for a prodrug of cisplatin. Inorg Chem 2013; 52:9418-26. [PMID: 23889547 DOI: 10.1021/ic400989v] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this work, we explore the use of a quick coupling mechanism for "arming" a cyclodextrin coated gold nanoparticle (AuNP) delivery vehicle, 2, with an adamantane-oxoplatin conjugate that is a prodrug of cisplatin, 3, to produce a cytotoxic nanodrug, 4. The two-part arming system, which utilizes the well-known guest-host interaction between β-cyclodextrin and adamantane, may be useful for rapidly constituting polyfunctional nanodrugs prior to their application in chemotherapy. The 4.7 ± 1.1 nm delivery vehicle, 2, coated with per-6-thio-β-cyclodextrin (βSCD), was characterized using transmission electron microscopy and absorption spectroscopy, and the density of surface-attached βSCD molecules, ∼210 βSCD/AuNP, was determined using thermogravimetric analysis. Because (13)C NMR spectra of βSCD used in the study exhibited disulfide linkages and the observed surface density on the AuNP exceeded that possible for a close-packed mono layer, a fraction of the surface-attached βSCD molecules on the particle were oligomerized through disulfide linkages. Determination of the binding constant, K, for the 3-βCD interaction using (1)H NMR chemical shifts was complicated by the self-association of 3 to form a dimer through its conjugated adamantane residue. With a dimerization constant of K2 = 26.7 M(-1), the value of K for the 3-βCD interaction (1:1 stoichiometry) is 400-800 M(-1), which is lower than the value, K = 1.4 × 10(3) M(-1), measured for the 2-3 interaction using ICP-MS. Optical microscopy showed that when neuroblastoma SK-N-SH cells are treated with the nanodrug, 4 (2+3), clusters of gold nanoparticles are observed in the nuclear regions of living cells within 24 h after exposure, but, at later times when most cells are dying or dead, clustering is no longer observed. Treating the cells with 4 for 72 h gave percent inhibitions that are lower than that of cisplatin, suggesting that the Pt(IV) ions in 4 may be incompletely reduced to cytotoxic Pt(II) species in the cell.
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Affiliation(s)
- Yi Shi
- Department of Chemistry, Syracuse University, 111 College Place, CST, Rm 1-014, Syracuse, New York 13244-4100, United States
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107
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Strategies for the design of orally bioavailable antileishmanial treatments. Int J Pharm 2013; 454:539-52. [PMID: 23871737 DOI: 10.1016/j.ijpharm.2013.07.035] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/08/2013] [Accepted: 07/10/2013] [Indexed: 12/21/2022]
Abstract
Leishmaniasis is one of the six major tropical diseases targeted by the World Health Organization. The most serious, life-threatening form is visceral leishmaniasis (VL). No vaccine is yet available for human use and chemotherapy is the main mean of dealing with this disease. This review focuses on the development of drug delivery systems (DDS) for treatment of leishmaniasis. After an overview of the significance of leishmaniasis in 2013, current chemotherapy and its limitations are considered, leading to possible strategies to improve the treatment of VL: new drugs, combinations of existing drugs and DDS, particularly for oral administration. Nanostructured biomaterials such as lipid-based or polymeric nanoparticles have unique physicochemical properties, ultra-small and controllable size, large surface area to mass ratio and the possibility of surface modification which can be used to advantage for the oral administration of antileishmanial drugs. They can improve the rate of dissolution of poorly water-soluble drugs, increase intestinal residence time by bioadhesion and, especially when lipid additives are used, influence the route and efficiency of absorption. These recent advances in this very active field should lead to better management of this serious disease.
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Pandit V, Gorantla R, Devi K, Pai R, Sarasija S. Preparation and characterization of pioglitazone cyclodextrin inclusion complexes. J Young Pharm 2013; 3:267-74. [PMID: 22224032 PMCID: PMC3249738 DOI: 10.4103/0975-1483.90234] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Pioglitazone, a class II Biopharmaceutical Classification System drug having poor water solubility and slow dissolution rate may have a negative impact on its subtherapeutic plasma drug levels leading to therapeutic failure. In order to improve its water solubility and thus dissolution, cyclodextrin complexation technique was followed. The phase solubility studies were carried using three different types of cyclodextrins viz., β, methyl-β and γ-cyclodextrins. The Gibbs free energy was calculated in order to determine ease of the complexation. Binary systems of pioglitazone with cyclodextrins were prepared by kneading method and spray drying method. The phase solubility profiles with all the three cyclodextrins were classified as AL-type, indicating the formation of 1:1 stoichiometric inclusion complexes. The complexation capability of cyclodextrins with pioglitazone increased in the order of methyl-β > β > γ-cyclodextrin. The Gibbs free energy was found to be in the order γ > methyl-β > β cyclodextrin. Characterization of inclusion complexes was done by solubility studies, in vitro dissolution studies, Fourier transformation-infrared spectroscopy, scanning electron microscopy, differential scanning calorimetry and X-ray powder diffractometry studies. Inclusion complexes exhibited higher rates of dissolution than the corresponding physical mixtures and pure drug. Greater solubility was observed with spray-dried methyl-β cyclodextrin complexes (2.29 ± 0.001 mg/ml) in comparison to the kneaded methyl-β cyclodextrin complexes (1.584 ± 0.053 mg/ml) and pure drug (0.0714 ± 0.0018 mg/ml).
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Affiliation(s)
- V Pandit
- Department of Pharmaceutics, Al Ameen College of Pharmacy, Bangalore, India
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109
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Roux M, Sternin E, Bonnet V, Fajolles C, Djedaíni-Pilard F. Dynamic lipid lateral segregation driven by lauryl cyclodextrin interactions at the membrane surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3677-3687. [PMID: 23409976 DOI: 10.1021/la304524a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Amphiphilic cyclodextrins, with a cholesterol anchor (βChol) or an aspartic acid moiety esterified by two lauryl acyl chains (βDLC), were designed to combine the inclusion ability of the cyclodextrin cavity with the carrier properties of model membranes. Their insertion in phosphatidylcholine bilayers induces a marked lateral phase separation into a pure lipid phase and a cyclodextrin-rich phase (LCD), organized as a 2D cyclodextrin network stabilized by intermolecular hydrogen bonds between the saccharide headgroups at the membrane surface (Roux, M.; Perly, B.; Djedaïni-Pilard, F. Self-Assemblies of Amphiphilic Cyclodextrins. Eur. Biophys. J.2007, 36, 861-867). We have replaced the dilauryl anchor by a single lauryl chain grafted onto a leucine residue, giving monolauryl-β-cyclodextrin (βMLC), which readily inserts into bilayers of chain-deuterated DMPC-d27. The removal of one lauryl acyl chain leads to a dynamic membrane insertion of this new cyclodextrin derivative, with significant lipid exchange on the deuterium NMR time scale between a loosely packed cyclodextrin-enriched phase (L'CD) and free lipid regions, yielding broadened two-component NMR spectra. Like the LCD phases, the cyclodextrin-enriched L'CD regions remain (partially) fluid below the DMPC-d27 main fluid-to-gel transition but do not undergo a clear transition toward a gel state, as observed at 14.5 °C in the LCD phase induced by the dilauryl derivative. Partially fluid lipids of the βMLC-induced L'CD phase coexist with pure lipids in the Pβ' gel phase with possible exchange between them until all of the lipids undergo a transition toward an Lβ' gel state at around 7 °C. Trimethylated monolauryl-β-cyclodextrins induce only an ordering of the lipid acyl chains just above the main transition, without any lateral phase separation. Similar chain ordering is also observed within the βMLC-induced L'CD phase as a consequence of the deep membrane insertion of the monolauryl nonmethylated cyclodextrin derivative.
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Affiliation(s)
- Michel Roux
- CEA/DSV/iBiTec-S, UMR CNRS 8221, SB2SM, F-91191 Gif sur Yvette Cedex, France
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110
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Sutton JT, Haworth KJ, Pyne-Geithman G, Holland CK. Ultrasound-mediated drug delivery for cardiovascular disease. Expert Opin Drug Deliv 2013; 10:573-92. [PMID: 23448121 DOI: 10.1517/17425247.2013.772578] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Ultrasound (US) has been developed as both a valuable diagnostic tool and a potent promoter of beneficial tissue bioeffects for the treatment of cardiovascular disease. These effects can be mediated by mechanical oscillations of circulating microbubbles, or US contrast agents, which may also encapsulate and shield a therapeutic agent in the bloodstream. Oscillating microbubbles can create stresses directly on nearby tissue or induce fluid effects that effect drug penetration into vascular tissue, lyse thrombi or direct drugs to optimal locations for delivery. AREAS COVERED The present review summarizes investigations that have provided evidence for US-mediated drug delivery as a potent method to deliver therapeutics to diseased tissue for cardiovascular treatment. In particular, the focus will be on investigations of specific aspects relating to US-mediated drug delivery, such as delivery vehicles, drug transport routes, biochemical mechanisms and molecular targeting strategies. EXPERT OPINION These investigations have spurred continued research into alternative therapeutic applications, such as bioactive gas delivery and new US technologies. Successful implementation of US-mediated drug delivery has the potential to change the way many drugs are administered systemically, resulting in more effective and economical therapeutics, and less-invasive treatments.
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Affiliation(s)
- Jonathan T Sutton
- University of Cincinnati, College of Medicine, Internal Medicine, Division of Cardiovascular Diseases, and Biomedical Engineering Program, Cincinnati, OH, USA
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111
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Badilli U, Amasya G, Şen T, Tarimci N. Topical emulgel formulation containing inclusion complex of calcipotriol with cyclodextrin. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0293-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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112
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Tan Q, He D, Wu M, Yang L, Ren Y, Liu J, Zhang J. Characterization, activity, and computer modeling of a molecular inclusion complex containing rifaldazine. Int J Nanomedicine 2013; 8:477-84. [PMID: 23390365 PMCID: PMC3564462 DOI: 10.2147/ijn.s38937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background The purpose of this study was to develop, characterize, and investigate a molecular inclusion complex containing rifaldazine with good solubility and antibacterial activity. Methods Rifaldazine, a lipophilic molecule, was encapsulated into the hydrophobic cavity of β-cyclodextrin to form a molecular inclusion complex (RAABCD) with good solubility. RAABCD was prepared in a short time using a solid-state grinding method. The inclusion ratio, binding constant, and change in Gibbs free energy were determined by a phase solubility diagram and/or ultraviolet-visible spectroscopy. Differential scanning calorimetry and Fourier transform infrared spectroscopy of RAABCD were performed. Morphological features of RAABCD were observed by photomicroscopy. The most likely optimal configuration for RAABCD was simulated by computer modeling. Broth macrodilution testing was done to investigate the antibacterial activity of RAABCD. Results The inclusion ratio, binding constant, and change in Gibbs free energy, determined by a phase solubility diagram and/or ultraviolet-visible spectroscopy were 1:1, 288.33/261.33 L/mol, and 32.29/31.73 kJ/mol, respectively. Differential scanning calorimetry and Fourier transformed infrared spectra of RAABCD confirmed the molecular interaction between rifaldazine and β-cyclodextrin. The morphological difference between irregular and amorphous-shaped RAABCD and columnar-shaped rifaldazine further confirmed the molecular encapsulation of rifaldazine. The most likely optimal configuration for RAABCD was confirmed by computer modeling. Broth macrodilution testing indicated that RAABCD had good antibacterial activity. Conclusion RAABCD had improved solubility and good activity, and might be a promising alternative for treatment of a range of bacterial infections.
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Affiliation(s)
- Qunyou Tan
- Department of Thoracic Surgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, People’s Republic of China
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113
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Gambini J, López-Grueso R, Olaso-González G, Inglés M, Abdelazid K, El Alami M, Bonet-Costa V, Borrás C, Viña J. [Resveratrol: distribution, properties and perspectives]. Rev Esp Geriatr Gerontol 2013; 48:79-88. [PMID: 23332579 DOI: 10.1016/j.regg.2012.04.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2011] [Revised: 02/02/2012] [Accepted: 04/02/2012] [Indexed: 02/02/2023]
Abstract
Resveratrol is a natural polyphenol which can be found in many plants and fruits, such as peanuts, mulberries, blueberries and, above all, in grapes and red wine. Its synthesis is regulated by the presence of stressful factors, such as fungal contamination and ultra-violet radiation. In plants, it plays a role as a phytoalexin, showing a capacity to inhibit the development of certain infections. Plant extracts which contain resveratrol have been employed by traditional medicine for more than 2000 years. Resveratrol was first isolated, and its properties were initially studied with scientific methods, thirty years ago. Its in vitro properties have been extensively studied and demonstrated. It is worth highlighting its activity as an anti-cancer agent, platelet anti-aggregation agent, anti-inflammatory, antiallergenic, etc. The activity of its in vivo properties are not so clear. There are many studies that report benefits on the cardiovascular system, illnesses such as diabetes, and in longevity. However, other authors did not find any agreement between in vitro and in vivo studies. This discrepancy is due to the bioavailability of resveratrol. After an oral dose, it has been demonstrated that the absorption is very high, but the metabolic pathways leave just a little free resveratrol in blood, therefore the bioavailability in the target tissues is very low and the concentrations used in in vitro studies are not found in these tissues. Thus, resveratrol is a very active molecule for maintaining health, but due to the low bioavailability not all the in vitro effects can be translated to in vivo. This opens a new potential approach, seeking derivatives of resveratrol that can be measured in the desired tissues.
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Affiliation(s)
- Juan Gambini
- Departamento de Fisiología, Facultad de Medicina, Universidad de Valencia, INCLIVA, Valencia, Spain
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114
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Pawar VK, Asthana S, Mishra N, Chaurasia M, Chourasia MK. Chitosan coated hydroxypropyl methylcellulose-ethylcellulose shell based gastroretentive dual working system to improve the bioavailability of norfloxacin. RSC Adv 2013. [DOI: 10.1039/c3ra42726a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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115
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Tomasina J, Lheureux S, Gauduchon P, Rault S, Malzert-Fréon A. Nanocarriers for the targeted treatment of ovarian cancers. Biomaterials 2013; 34:1073-101. [DOI: 10.1016/j.biomaterials.2012.10.055] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Accepted: 10/23/2012] [Indexed: 12/09/2022]
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116
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Palanca JM, Aguirre-Rueda D, Granell MV, Aldasoro M, Garcia A, Iradi A, Obrador E, Mauricio MD, Vila J, Gil-Bisquert A, Valles SL. Sugammadex, a neuromuscular blockade reversal agent, causes neuronal apoptosis in primary cultures. Int J Med Sci 2013; 10:1278-85. [PMID: 23983586 PMCID: PMC3752716 DOI: 10.7150/ijms.6254] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 07/18/2013] [Indexed: 12/20/2022] Open
Abstract
Sugammadex, a γ-cyclodextrin that encapsulates selectively steroidal neuromuscular blocking agents, such as rocuronium or vecuronium, has changed the face of clinical neuromuscular pharmacology. Sugammadex allows a rapid reversal of muscle paralysis. Sugammadex appears to be safe and well tolerated. Its blood-brain barrier penetration is poor (< 3% in rats), and thus no relevant central nervous toxicity is expected. However the blood brain barrier permeability can be altered under different conditions (i.e. neurodegenerative diseases, trauma, ischemia, infections, or immature nervous system). Using MTT, confocal microscopy, caspase-3 activity, cholesterol quantification and Western-blot we determine toxicity of Sugammadex in neurons in primary culture. Here we show that clinically relevant sugammadex concentrations cause apoptotic/necrosis neuron death in primary cultures. Studies on the underlying mechanism revealed that sugammadex-induced activation of mitochondria-dependent apoptosis associates with depletion of neuronal cholesterol levels. Furthermore SUG increase CytC, AIF, Smac/Diablo and CASP-3 protein expression in cells in culture. Potential association of SUG-induced alteration in cholesterol homeostasis with oxidative stress and apoptosis activation occurs. Furthermore, resistance/sensitivity to oxidative stress differs between neuronal cell types.
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Affiliation(s)
- José M Palanca
- Department of Surgery/Anaesthesiology, School of Medicine and Odontology, University of Valencia, Spain
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Onnainty R, Schenfeld EM, Quevedo MA, Fernández MA, Longhi MR, Granero GE. Characterization of the Hydrochlorothiazide: β-Cyclodextrin Inclusion Complex. Experimental and Theoretical Methods. J Phys Chem B 2012; 117:206-17. [DOI: 10.1021/jp311274c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Renée Onnainty
- Departamento de Farmacia, UNITEFA,
CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, X5000HUA,
Argentina
| | - Esteban M. Schenfeld
- Departamento de Farmacia, UNITEFA,
CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, X5000HUA,
Argentina
| | - Mario A. Quevedo
- Departamento de Farmacia, UNITEFA,
CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, X5000HUA,
Argentina
| | - Mariana A. Fernández
- Departamento
de Química
Orgánica, INFIQC, CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba,
X5000HUA, Argentina
| | - Marcela R. Longhi
- Departamento de Farmacia, UNITEFA,
CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, X5000HUA,
Argentina
| | - Gladys E. Granero
- Departamento de Farmacia, UNITEFA,
CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, X5000HUA,
Argentina
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118
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Host –guest interactions involving platinum anticancer agents. DNA binding and cytotoxicity of a β-cyclodextrin-adamantane-Pt(IV) complex. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2012.06.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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119
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6-Hydroxymethyltriazolyl-6-deoxy-β-cyclodextrin: a highly water soluble and structurally well-defined β-cyclodextrin click cluster. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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120
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Park GH, Baek JM, Le HT, Lim CW, Kim TW. Cooperative perfunctionalization and partial labeling of 6-azido-6-deoxy-α-cyclodextrin through copper(I)-catalyzed azide–alkyne cycloaddition. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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121
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Park J, Kim WJ. Current status of gene delivery: spotlight on nanomaterial-polymer hybrids. J Drug Target 2012; 20:648-66. [PMID: 22804769 DOI: 10.3109/1061186x.2012.704634] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Gene therapy aims to treat human disorders by introducing genetic materials into specific target cells or tissues. Despite the curability for the origIn of diseases by restoring missing functionalities, no technical feasibility of gene therapy has been established due to the lack of safe and efficient gene delivery systems. The emergence of nanotechnology has provided an opportunity to create nanomaterials that are suitable for the biomedical applications. Nanomaterials integrated with cationic polymers offer novel platforms that allow not only easy incorporation of genetic materials through electrostatic interactions but also further modifications to be upgraded to theranostics. In this article, current status of gene delivery utilizing hybrid nanomaterials that are composed of novel nanoplatforms and cationic polymers are highlighted. In particular, different strategies employed for the construction of nanomaterial-polymer hybrids are described.
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Affiliation(s)
- Juhee Park
- Department of Chemistry, BK21 Program, Polymer Research Institute, Pohang University of Science and Technology (POSTECH) , Pohang , Republic of Korea
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122
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Image guided therapy: the advent of theranostic agents. J Control Release 2012; 161:328-37. [PMID: 22626940 DOI: 10.1016/j.jconrel.2012.05.028] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 05/15/2012] [Accepted: 05/15/2012] [Indexed: 12/13/2022]
Abstract
Theranostic agents represent a recently introduced class of imaging probes designed to offer to pharmacologists and physicians a robust tool for minimally invasive in vivo visualization of drug delivery/release and therapy monitoring. By means of these agents, novel strategies able to integrate diagnosis and therapy could be developed. This highly interdisciplinary research field is one of the more innovative products resulting from the synergism between molecular imaging and nanomedicine. Potential applications of theranosis include the in vivo assessment of drug biodistribution and accumulation at the target site, visualization of the drug release from a given nanocarrier, and real-time monitoring of the therapeutic outcome. The expected end-point of theranostic agents is to provide a fundamental support for the optimization of innovative diagnostic and therapeutic strategies that could contribute to emerging concepts in the field of the "personalized medicine". This perspective paper aims at providing the reader the basic principles of theranosis with a particular emphasis to the design of theranostic agents.
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Stloukal P, Kucharczyk P, Sedlarik V, Bazant P, Koutny M. Low molecular weight poly(lactic acid) microparticles for controlled release of the herbicide metazachlor: preparation, morphology, and release kinetics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:4111-9. [PMID: 22480233 DOI: 10.1021/jf300521j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The preemergence chloroacetamide herbicide metazachlor was encapsulated in biodegradable low molecular weight poly(lactic acid) micro- and submicroparticles, and its release to the water environment was investigated. Three series of particles, S, M, and L, varying in their size (from 0.6 to 8 μm) and with various initial amounts of the active agent (5%, 10%, 20%, 30% w/w) were prepared by the oil-in-water solvent evaporation technique with gelatin as biodegradable surfactant. The encapsulation efficiencies reached were about 60% and appeared to be lower for smaller particles. Generally, it was found that the rate of herbicide release decreased with increasing size of particles. After 30 days the portions of the herbicide released for its highest loading (30% w/w) were 92%, 56%, and 34% for about 0.6, 0.8, and 8 μm particles, respectively. The release rates were also lower for lower herbicide loadings. Metazachlor release from larger particles tended to be a diffusion-controlled process, while for smaller particles the kinetics was strongly influenced by an initial burst release.
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Affiliation(s)
- Petr Stloukal
- Centre of Polymer Systems, Tomas Bata University in Zlin, Zlin, Czech Republic
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124
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Quinn K, Gullapalli RP, Merisko-liversidge E, Goldbach E, Wong A, Liversidge GG, Hoffman W, Sauer JM, Bullock J, Tonn G. A Formulation Strategy for Gamma Secretase Inhibitor ELND006, a BCS Class II Compound: Development of a Nanosuspension Formulation with Improved Oral Bioavailability and Reduced Food Effects in Dogs. J Pharm Sci 2012; 101:1462-74. [DOI: 10.1002/jps.23034] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 10/27/2011] [Accepted: 12/09/2011] [Indexed: 11/09/2022]
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125
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Cyclodextrins adsorbed onto activated carbons: Preparation, characterization, and effect on the dispersibility of the particles in water. J Colloid Interface Sci 2012; 371:89-100. [DOI: 10.1016/j.jcis.2011.11.083] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 11/18/2011] [Accepted: 11/19/2011] [Indexed: 11/20/2022]
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126
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Aksungur P, Demirbilek M, Denkbaş EB, Ünlü N. Comparative evaluation of cyclosporine A/HPβCD-incorporated PLGA nanoparticles for development of effective ocular preparations. J Microencapsul 2012; 29:605-13. [DOI: 10.3109/02652048.2012.668961] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Pelin Aksungur
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Hacettepe University,
06100 Ankara, Turkey
| | - Murat Demirbilek
- Nanotechnology Nanomedicine Division, Chemistry Department – Biochemistry Division, Beytepe, Hacettepe University,
06800 Ankara, Turkey
| | - Emir B. Denkbaş
- Nanotechnology Nanomedicine Division, Chemistry Department – Biochemistry Division, Beytepe, Hacettepe University,
06800 Ankara, Turkey
| | - Nurşen Ünlü
- Faculty of Pharmacy, Department of Pharmaceutical Technology, Hacettepe University,
06100 Ankara, Turkey
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127
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de Jesus MB, Fraceto LF, Martini MF, Pickholz M, Ferreira CV, de Paula E. Non-inclusion complexes between riboflavin and cyclodextrins. J Pharm Pharmacol 2012; 64:832-42. [DOI: 10.1111/j.2042-7158.2012.01492.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Abstract
Objectives
To investigate the molecular interaction between β-cyclodextrin (βCD) or hydroxypropyl-β-cyclodextrin (HPβCD) and riboflavin (RF), and to test the anticancer potential of these formulations.
Methods
The physicochemical characterization of the association between RF and CDs was performed by UV-vis absorption, fluorescence, differential scanning calorimetry and NMR techniques. Molecular dynamics simulation was used to shed light on the mechanism of interaction of RF and CDs. Additionally, in-vitro cell culture tests were performed to evaluate the cytotoxicity of the RF–CD complexes against prostate cancer cells.
Key findings
Neither βCD nor HPβCD led to substantial changes in the physicochemical properties of RF (with the exception of solubility). Additionally, rotating frame Overhauser effect spectroscopy experiments detected no spatial correlations between hydrogens from the internal cavity of CDs and RF, while molecular dynamics simulations revealed ‘out-of-ring’ RF–CD interactions. Notwithstanding, both RF–βCD and RF–HPβCD complexes were cytotoxic to PC3 prostate cancer cells.
Conclusions
The interaction between RF and either βCD or HPβCD, at low concentrations, seems to be made through hydrogen bonding between the flavonoid and the external rim of both CDs. Regardless of the mechanism of complexation, our findings indicate that RF–CD complexes significantly increase RF solubility and potentiate its antitumour effect.
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Affiliation(s)
- Marcelo Bispo de Jesus
- Department of Biochemistry, Institute of Biology, State University of Campinas (Unicamp), Campinas, Brazil
| | - Leonardo Fernandes Fraceto
- Department of Biochemistry, Institute of Biology, State University of Campinas (Unicamp), Campinas, Brazil
- Department of Environmental Engineering, State University of São Paulo (Unesp), Sorocaba, Brazil
| | - Maria Florencia Martini
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires and CONICET, Argentina
| | - Monica Pickholz
- Department of Biochemistry, Institute of Biology, State University of Campinas (Unicamp), Campinas, Brazil
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires and CONICET, Argentina
| | - Carmen Veríssima Ferreira
- Department of Biochemistry, Institute of Biology, State University of Campinas (Unicamp), Campinas, Brazil
| | - Eneida de Paula
- Department of Biochemistry, Institute of Biology, State University of Campinas (Unicamp), Campinas, Brazil
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128
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Hapiot F, Bricout H, Tilloy S, Monflier E. Functionalized Cyclodextrins as First and Second Coordination Sphere Ligands for Aqueous Organometallic Catalysis. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101316] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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129
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Delrivo A, Zoppi A, Longhi MR. Interaction of sulfadiazine with cyclodextrins in aqueous solution and solid state. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.10.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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130
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Yuan W, Zou H, Guo W, Wang A, Ren J. Supramolecular amphiphilic star-branched copolymer: from LCST–UCST transition to temperature–fluorescence responses. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm35297d] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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131
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Mechanical grinding effect on thermodynamics and inclusion efficiency of loratadine–cyclodextrin inclusion complex formation. Carbohydr Polym 2012; 87:512-517. [DOI: 10.1016/j.carbpol.2011.08.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2011] [Revised: 07/29/2011] [Accepted: 08/04/2011] [Indexed: 11/18/2022]
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132
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Multiphoton microscopy. a powerful tool in skin research and topical drug delivery science. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50036-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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133
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Physicochemical and biological properties of 2-O-α-d-galactosyl-cyclomaltohexaose (α-cyclodexterin) and -cyclomaltoheptaose (β-cyclodextrin). Carbohydr Res 2011; 346:1018-22. [DOI: 10.1016/j.carres.2011.02.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 02/24/2011] [Accepted: 02/28/2011] [Indexed: 11/21/2022]
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134
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Grasso GI, Bellia F, Arena G, Vecchio G, Rizzarelli E. Noncovalent Interaction-Driven Stereoselectivity of Copper(II) Complexes with Cyclodextrin Derivatives of l- and d-Carnosine. Inorg Chem 2011; 50:4917-24. [DOI: 10.1021/ic200132a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Giuseppa Ida Grasso
- Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Francesco Bellia
- Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Giuseppe Arena
- Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Graziella Vecchio
- Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
| | - Enrico Rizzarelli
- Department of Chemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy
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135
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Macartney DH. Encapsulation of Drug Molecules by Cucurbiturils: Effects on their Chemical Properties in Aqueous Solution. Isr J Chem 2011. [DOI: 10.1002/ijch.201100040] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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136
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Paolino D, Cosco D, Molinaro R, Celia C, Fresta M. Supramolecular devices to improve the treatment of brain diseases. Drug Discov Today 2011; 16:311-24. [DOI: 10.1016/j.drudis.2011.02.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 01/05/2011] [Accepted: 02/08/2011] [Indexed: 01/03/2023]
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137
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Delmas D, Aires V, Limagne E, Dutartre P, Mazué F, Ghiringhelli F, Latruffe N. Transport, stability, and biological activity of resveratrol. Ann N Y Acad Sci 2011; 1215:48-59. [DOI: 10.1111/j.1749-6632.2010.05871.x] [Citation(s) in RCA: 157] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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