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Jia Y, Huang T. Overview of Antabuse ® (Disulfiram) in Radiation and Cancer Biology. Cancer Manag Res 2021; 13:4095-4101. [PMID: 34045896 PMCID: PMC8146747 DOI: 10.2147/cmar.s308168] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 04/23/2021] [Indexed: 12/13/2022] Open
Abstract
Antabuse®, generic name disulfiram, has been extensively used in daily clinical practice to treat alcohol abuse. In vivo and in vitro experiments have demonstrated that disulfiram was capable of inhibiting tumor cell proliferation; clinical studies have indicated that the administration of this drug was associated with favorable survival, whilst in vitro experiments have elucidated the anticancer mechanism of disulfiram. In addition, radiation and cancer biology studies have shown that disulfiram can protect normal cells and sensitize tumor cells during radiotherapy. This review aims at describing the antitumor activity of disulfiram in both preclinical studies and clinical trials, whilst focusing on the advances of this drug in radiation and cancer biology, and the promise of repurposing it as a novel sensitizer to, and protector against, radiation on the incoming clinical studies.
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Affiliation(s)
- Yaqi Jia
- Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Tao Huang
- Department of Hepatobiliary Surgery, The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
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Wang R, Shen J, Yan H, Gao X, Dong T, Wang P, Zhou J. The Evolving Role of Disulfiram in Radiobiology and the Treatment of Breast Cancer. Onco Targets Ther 2020; 13:10441-10446. [PMID: 33116623 PMCID: PMC7569069 DOI: 10.2147/ott.s271532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 08/29/2020] [Indexed: 12/15/2022] Open
Abstract
Disulfiram (DSF), also known as “Antabuse”, has been widely used in clinical practice to treat alcoholism. In the past decades, both in vivo and in vitro experiments showed that DSF has strong anti-cancer activity, there were some clinical studies indicated the administration of this drug was associated with favorable survival in breast cancer. It is also evident that DSF has a radioprotective effect on normal cells and could be utilized during the course of radiation therapy. Moreover, increasing evidences demonstrated the role of DSF in enhancing the radiosensitivity of tumor cells in number of alternative mechanisms. Recent studies have also elaborated the anticancer mechanism of DSF in tumor cells. This review summarizes the anticancer activity of DSF both in preclinical studies and clinical trials, focuses on the advances of this drug in radiobiology and the treatment of breast cancer, and reveals the promising of repurposing DSF as a novel radiosensitizer and radioprotector in further clinical trials.
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Affiliation(s)
- Rui Wang
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Jun Shen
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Huanhuan Yan
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Xitao Gao
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Tianfu Dong
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Peishun Wang
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Jun Zhou
- Department of Surgery, The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
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Octa-arginine modified lipid emulsions as a potential ocular delivery system for disulfiram: A study of the corneal permeation, transcorneal mechanism and anti-cataract effect. Colloids Surf B Biointerfaces 2017; 160:305-314. [DOI: 10.1016/j.colsurfb.2017.08.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 08/14/2017] [Accepted: 08/21/2017] [Indexed: 12/30/2022]
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Agarwal R, Iezhitsa I, Agarwal P, Abdul Nasir NA, Razali N, Alyautdin R, Ismail NM. Liposomes in topical ophthalmic drug delivery: an update. Drug Deliv 2014; 23:1075-91. [DOI: 10.3109/10717544.2014.943336] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Affiliation(s)
- Renu Agarwal
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
- Brain & Neuroscience, Communities of Research (Core), Research Management Institute (RMI), Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia,
| | - Igor Iezhitsa
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
- Brain & Neuroscience, Communities of Research (Core), Research Management Institute (RMI), Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia,
- Research Institute of Pharmacology, Volgograd State Medical University, Volgograd, Russian Federation, and
| | - Puneet Agarwal
- Department of Ophthalmology, IMU Clinical School, International Medical University, Jalan Rasah, Seremban, Malaysia
| | - Nurul Alimah Abdul Nasir
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
- Brain & Neuroscience, Communities of Research (Core), Research Management Institute (RMI), Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia,
| | - Norhafiza Razali
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
- Brain & Neuroscience, Communities of Research (Core), Research Management Institute (RMI), Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia,
| | - Renad Alyautdin
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
| | - Nafeeza Mohd Ismail
- Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia,
- Brain & Neuroscience, Communities of Research (Core), Research Management Institute (RMI), Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, Malaysia,
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Zhao M, Chalmers L, Cao L, Vieira AC, Mannis M, Reid B. Electrical signaling in control of ocular cell behaviors. Prog Retin Eye Res 2011; 31:65-88. [PMID: 22020127 DOI: 10.1016/j.preteyeres.2011.10.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 10/01/2011] [Accepted: 10/04/2011] [Indexed: 12/13/2022]
Abstract
Epithelia of the cornea, lens and retina contain a vast array of ion channels and pumps. Together they produce a polarized flow of ions in and out of cells, as well as across the epithelia. These naturally occurring ion fluxes are essential to the hydration and metabolism of the ocular tissues, especially for the avascular cornea and lens. The directional transport of ions generates electric fields and currents in those tissues. Applied electric fields affect migration, division and proliferation of ocular cells which are important in homeostasis and healing of the ocular tissues. Abnormalities in any of those aspects may underlie many ocular diseases, for example chronic corneal ulcers, posterior capsule opacity after cataract surgery, and retinopathies. Electric field-inducing cellular responses, termed electrical signaling here, therefore may be an unexpected yet powerful mechanism in regulating ocular cell behavior. Both endogenous electric fields and applied electric fields could be exploited to regulate ocular cells. We aim to briefly describe the physiology of the naturally occurring electrical activities in the corneal, lens, and retinal epithelia, to provide experimental evidence of the effects of electric fields on ocular cell behaviors, and to suggest possible clinical implications.
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Affiliation(s)
- Min Zhao
- Department of Dermatology, UC Davis School of Medicine, 2921 Stockton Blvd., Sacramento, CA 95817, USA.
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Ito Y, Nagai N, Shimomura Y. Reduction in Intraocular Pressure by the Instillation of Eye Drops Containing Disulfiram Included with 2-Hydroxypropyl-.BETA.-cyclodextrin in Rabbit. Biol Pharm Bull 2010; 33:1574-8. [DOI: 10.1248/bpb.33.1574] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yoshimasa Ito
- Faculty of Pharmacy, Kinki University
- Pharmaceutical Research and Technology Institute, Kinki University
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Nagai N, Inomata M, Ito Y. Contribution of aldehyde dehydrogenase 3A1 to disulfiram penetration through monolayers consisting of cultured human corneal epithelial cells. Biol Pharm Bull 2008; 31:1444-8. [PMID: 18591790 DOI: 10.1248/bpb.31.1444] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We previously prepared 2-hydroxypropyl-beta-cyclodextrin (HPbetaCD) solutions containing disulfiram (DSF) and hydroxypropylmethylcellulose (HPMC, DSF solutions), and found the instillation of this DSF solutions delayed lens opacification in ICR/f rats, a recessive-type hereditary cataractous strain. In this study, we determined the corneal penetration mechanism of DSF solutions using human cornea epithelial cell monolayers based on the immortalized human cornea epithelial cell line (HCE-T) developed by Tropainen et al. [Invest. Ophthalmol. Vis. Sci., 42, 2942-2948 (2001)]. The transepithelial electrical resistance (TER) values of HCE-T cells increases from approximately 275 to 388 Omega.cm(2) by exposure to an air-liquid interface for 2 weeks. The penetration of DSF into the basolateral chamber was prevented by the increase in TER values. The DSF in solution was converted to diethyldithiocarbamate (DDC) during the penetration experiment using HCE-T cell monolayers, and a close relationship between the penetration coefficient of DDC and aldehyde dehydrogenase (ALDH) 3A1 mRNA expression (y=41.202x+18.587, R=0.9413) was observed. In addition, an anti-ALDH3A1 antibody significantly inhibited the DSF-DDC conversion. These results suggest that DSF in DSF solutions is converted to DDC via catalysis by an ALDH3A1 in the cornea, and then transited from the apical side to the basolateral side.
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Nagai N, Ito Y, Takeuchi N. Effect of disulfiram eye drops on lipid peroxide formation via excessive nitric oxide in lenses of hereditary cataract ICR/f rats. Biol Pharm Bull 2008; 31:981-5. [PMID: 18451530 DOI: 10.1248/bpb.31.981] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The ICR/f rat is a recessive-type hereditary cataractous strain, and opacity in the lens usually becomes evident at around 75 d of age. We previously found that the instillation of eye drops containing a disulfiram and hydroxypropyl-beta-cyclodextrin inclusion complex (DSF eye drops) delays lens opacification in ICR/f rats. In this study, we attempted to clarify the mechanisms of the delaying effect of DSF eye drops on cataract development in ICR/f rats. The calcium ion (Ca2+) content in the lenses of ICR/f rats increases at 77 d of age, and this elevation is preceded by a decrease in Ca2+-ATPase activity. On the other hand, the levels of nitric oxide (NO) and lipid peroxide (LPO) also increase in the lenses of ICR/f rats at 63 d of age, while the lenses are still transparent. The instillation of DSF eye drops reduces the changes in Ca2+ content, Ca2+-ATPase activity, NO and LPO levels in the lenses of ICR/f rats. The present study demonstrates that excessive NO production induces the increase in LPO, which causes the decrease in Ca2+-ATPase activity, and the increase in Ca2+ content in the lenses of ICR/f rat during cataract development. DSF eye drops have the ability to attenuate the increase in the NO and LPO levels, resulting in a delay in cataract development.
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Affiliation(s)
- Noriaki Nagai
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
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Permeability and anticataract effects of a topical ocular drug delivery system of disulfiram. J Drug Deliv Sci Technol 2008. [DOI: 10.1016/s1773-2247(08)50054-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Diebold Y, Jarrín M, Sáez V, Carvalho ELS, Orea M, Calonge M, Seijo B, Alonso MJ. Ocular drug delivery by liposome–chitosan nanoparticle complexes (LCS-NP). Biomaterials 2007; 28:1553-64. [PMID: 17169422 DOI: 10.1016/j.biomaterials.2006.11.028] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2006] [Accepted: 11/18/2006] [Indexed: 11/22/2022]
Abstract
This study evaluated in vitro and in vivo a colloidal nanosystem with the potential to deliver drugs to the ocular surface. This nanosystem, liposome-chitosan nanoparticle complexes (LCS-NP), was created as a complex between liposomes and chitosan nanoparticles (CS-NP). The conjunctival epithelial cell line IOBA-NHC was exposed to several concentrations of three different LCS-NP complex to determine the cytotoxicity. The uptake of LCS-NP by the IOBA-NHC conjunctival cell line and by primary cultured conjunctival epithelial cells was examined by confocal microscopy. Eyeball and lid tissues from LCS-NP-treated rabbits were evaluated for the in vivo uptake and acute tolerance of the nanosystems. The in vitro toxicity of LCS-NP in the IOBA-NHC cells was very low. LCS-NPs were identified inside IOBA-NHC cells after 15 min and inside primary cultures of conjunctival epithelial cells after 30 min. Distribution within the cells had different patterns depending on the LCS-NP formulation. Fluorescence microscopy of the conjunctiva revealed strong cellular uptake of LCS-NP in vivo and less intensive uptake by the corneal epithelium. No alteration was macroscopically observed in vivo after ocular surface exposure to LCS-NP. Taken together, these data demonstrate that LCS-NPs are potentially useful as drug carriers for the ocular surface.
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Affiliation(s)
- Yolanda Diebold
- IOBA, University of Valladolid, Ramón y Cajal 7, E-47005 Valladolid, Spain.
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Nagai N, Takeda M, Ito Y, Takeuchi N, Kamei A. Delay in ICR/f Rat Lens Opacification by the Instillation of Eye Drops Containing Disulfiram and Hydroxypropyl-.BETA.-cyclodextrin Inclusion Complex. Biol Pharm Bull 2007; 30:1529-34. [PMID: 17666815 DOI: 10.1248/bpb.30.1529] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, we attempted to enhance disulfiram (DSF) solubility using a 2-hydroxypropyl-beta-cyclodextrin (HPbetaCD) and hydroxypropylmethylcellulose (HPMC). We also investigated the effect of an HPbetaCD solution containing DSF and HPMC (DSF eye drops) on cataract development in ICR/f rat. The solubility of DSF increased with increasing HPbetaCD concentration, and the solubility of DSF in HPbetaCD solution containing 0.1% HPMC was approximately 20% greater than that of DSF in HPbetaCD solution without HPMC. In in vivo transcorneal penetration experiments using rabbits, only diethyldithiocarbamate (DDC) was detected (DSF was not detected) in the aqueous humor. This DSF-DDC conversion in the cornea was inhibited by treatment with a sulfhydryl (SH) inhibitor, p-mercuribenzoate and N-ethylmaleimide, in in vitro transcorneal penetration experiments using rabbit corneas. On the other hand, the instillation of 0.25% and 0.5% DSF eye drops delayed cataract development in ICR/f rats, a recessive-type hereditary cataractous strain. The present study demonstrates that DSF in HPbetaCD solution with HPMC is converted to DDC by the catalysis of proteins containing SH residues in the cornea, and this DDC may cause the delay in cataract development in ICR/f rats.
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Affiliation(s)
- Noriaki Nagai
- School of Pharmaceutical Sciences, Kinki University, Higashi-Osaka, Osaka 577-8502, Japan
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Abstract
PURPOSE This review aims to provide a literature survey of the association between photo-oxidation of lens proteins and lipid peroxidation with the genesis of age-related cataract in laboratory studies using rodent models, in epidemiological and interventional studies in humans. MATERIALS AND METHODS A Medline search using initial search terms lens, oxidation, antioxidant, and diet was employed to search for research papers covering the areas noted above from 1995 to 2005. Literature cited in those papers was also reviewed to provide as comprehensive a coverage of research work as possible. RESULTS Lens protein photo-oxidation and lipid peroxidation are widely acknowledged as important steps in age-related cataractogenesis. Dietary antioxidants are central in retarding cataractogenesis, although most evidence for this is gained from laboratory-based work on relatively unphysiologic rodent cataract models, using antioxidant regimes that could not be sustained in clinical practice. Most research in humans is retrospective epidemiology although some interventional research has been undertaken, with mixed results. CONCLUSIONS Dietary antioxidants are likely to be important in retarding cataractogenesis in older animals and in humans. Work on companion animals could provide a valuable stepping stone between rodent-based laboratory work and human interventional studies.
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Affiliation(s)
- David L Williams
- Department of Clinical Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 OES, England, UK.
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Sączewski J, Frontera A, Gdaniec M, Brzozowski Z, Sączewski F, Tabin P, Quiñonero D, Deyà PM. Synthesis, X-ray structure analysis and computational studies of novel bis(thiocarbamoyl) disulfides with non-covalent S⋯N and S⋯S interactions. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.02.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wang S, Li D, Ito Y, Liu X, Zhang J, Wu C. An ocular drug delivery system containing zinc diethyldithiocarbamate and HPbetaCD inclusion complex--corneal permeability, anti-cataract effects and mechanism studies. J Pharm Pharmacol 2005; 56:1251-7. [PMID: 15482639 DOI: 10.1211/0022357044526] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Our purpose was to study the formulation and anti-cataract effects of aqueous eye drops containing a high concentration of zinc diethyldithiocarbamate (Zn-DDC). A possible mechanism of the anti-cataract effect of Zn-DDC was also studied. Zn-DDC and hydroxypropyl-beta-cyclodextrin (HPbetaCD) inclusion complex (Zn-DDC/HPbetaCD) was studied using the saturation solution method and characterized by differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (IR). Suitable formulations for Zn-DDC eye drops were established by means of in-vitro trans-corneal penetration experiments. The anti-cataract effect of the selected formulation was demonstrated by the delay in lens opacity development in hereditary shumuya cataract rats (SCRs). Semiquantitative reverse transcription polymerase chain reaction (RT-PCR) was performed to study the effect of diethyldithiocarbamate (DDC), a metabolite of Zn-DDC, on the transcription inducible nitric oxide synthase (iNOS) mRNA in human lens epithelial cells (HLEC). In the presence of 22% (w/v) HPbetaCD, the solubility of Zn-DDC in water (0.2 mM) was increased almost 850 fold (to 17 mM), by the formation of Zn-DDC/HPbetaCD. The stoichiometry of Zn-DDC inclusion was 1:1. The Zn-DDC/HPbetaCD stability constant, Ks (1:1) was estimated to be 3453 M(-1). The ophthalmic preparation containing 0.1% HPMC and 0.1% poloxamer 188 (P188) exhibited better permeability than the others in-vitro, and significantly delayed cataract formation in SCRs compared with non-treated SCRs. DDC inhibits the transcription of iNOS mRNA in HLEC. We concluded that this drug delivery system increases both the drug solubility in aqueous eye drops and the permeability of drug through the rabbit cornea, by the formation of a drug-cyclodextrin inclusion complex and the addition of polymers and penetration enhancers. The preparation effectively prevented the development of cataracts in SCRs. DDC, the metabolite of Zn-DDC, may be one of the factors in the prevention of cataract formation because it inhibits the transcription of iNOS mRNA.
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Affiliation(s)
- Siling Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Shigeta Y, Imanaka H, Ando H, Ryu A, Oku N, Baba N, Makino T. Skin whitening effect of linoleic acid is enhanced by liposomal formulations. Biol Pharm Bull 2004; 27:591-4. [PMID: 15056874 DOI: 10.1248/bpb.27.591] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Linoleic acid (LA) is known to have a whitening effect on hyperpigmented skin, and is encapsulated in liposomes for topical application because of its low solubility in aqueous solution, although the effect of liposomalization of LA on the whitening activity has not been evaluated. In the present study, we evaluated the effect of liposomalization on the whitening activity of LA by using LA in ethanol, hydrogel containing LA, and hydrogel containing liposomal LA towards the UV-stimulated hyperpigmented dorsal skin of brownish guinea pigs. The whitening effect was far greater for hydrogel containing liposomal LA (0.1% w/w as a final concentration of LA) than for free LA in ethanol or hydrogel containing LA. Next, the whitening effect of LA was examined with UV-stimulated hyperpigmented human upper arm skin by using a hydrogel containing liposomal LA (0.1% LA) and non-liposomal LA (3.0, 10.0% LA). Liposomal LA (0.1%) showed a whitening effect comparable to 10.0% non-liposomal LA and was far more effective than 3.0% non-liposomal LA. These results indicate that liposomal formulations are favorable for the transdermal application of LA.
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Affiliation(s)
- Yasutami Shigeta
- Department of Bioresources Chemistry, Faculty of Agriculture, Okayama University, 1-1-1 Tsushimanaka, Okayama 700-8530, Japan.
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Gandhi NM, Gopalaswamy UV, Nair CRK. Radiation protection by disulfiram: protection of membrane and DNA in vitro and in vivo against gamma-radiation. JOURNAL OF RADIATION RESEARCH 2003; 44:255-259. [PMID: 14646230 DOI: 10.1269/jrr.44.255] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Disufiram (a drug used for the treatment of alcoholism) protected microsomal membranes and plasmid DNA against damages induced by gamma-radiation. The peroxidation of membrane lipids increased linearly with the radiation dose up to 600 Gy, and the presence of disulfiram inhibited membrane lipid peroxidation as assayed by the presence of thiobarbituric acid reacting substances. The reduction of the quantity of the supercoiled (ccc) form of plasmid pBR322 DNA is directly related to the radiation-induced damage, particularly to DNA strand breaks. There was a complete protection of plasmid DNA when exposed to gamma-radiation in the presence of disufiram (0.1 mM) at 300 Gy. This drug also protected deoxyribose against damages caused by hydroxyl radicals produced by the Fenton reaction. The administration of DSF to mice prior to whole-body radiation exposure (4 Gy) resulted in a reduction of peroxidation of membrane lipids in mice liver as well as a decrease in radiation-induced damage to cellular DNA, as assayed by single-cell gel electrophoresis (comet assay). The results thus suggest the possible use of DSF as a radioprotector.
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Affiliation(s)
- Nitin Motilal Gandhi
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, India
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Congdon NG. Prevention strategies for age related cataract: present limitations and future possibilities. Br J Ophthalmol 2001; 85:516-20. [PMID: 11316704 PMCID: PMC1723947 DOI: 10.1136/bjo.85.5.516] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- N G Congdon
- Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University Schools of Medicine and Public Health, USA.
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Furneri PM, Fresta M, Puglisi G, Tempera G. Ofloxacin-loaded liposomes: in vitro activity and drug accumulation in bacteria. Antimicrob Agents Chemother 2000; 44:2458-64. [PMID: 10952595 PMCID: PMC90085 DOI: 10.1128/aac.44.9.2458-2464.2000] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Different ofloxacin-loaded unilamellar vesicles were prepared by the extrusion technique, and their antimicrobial activities were determined in comparison to those of the free drug by means of MIC determinations with both American Type Culture Collection standards and wild-type bacterial strains (six strains of Enterococcus faecalis, seven strains of Escherichia coli, six strains of Staphylococcus aureus, and six strains of Pseudomonas aeruginosa). The accumulation of ofloxacin and liposome-ofloxacin was measured by determining the amount of the drug inside the bacteria as a function of time. Encapsulated fluoroquinolone yielded MICs which were at least twofold lower than those obtained with the free drug. In particular, liposomes made up of dimyristoylphosphatidylcholine-cholesterol-dipalmitoylphosphatidylser ine and dimyristoylphosphatidylcholine-cholesterol-dihexadecylphosphate (4:3:4 molar ratio) provided the best improvement in antimicrobial activity against the various bacterial strains investigated. The liposome formulation produced higher intracellular fluoroquinolone concentrations than those achieved simultaneously with the free drug in both E. coli and P. aeruginosa.
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Affiliation(s)
- P M Furneri
- Department of Microbiological Sciences, University of Catania, Italy.
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Literature alerts. J Microencapsul 2000; 17:657-69. [PMID: 11038124 DOI: 10.1080/026520400417702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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