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Hara T, Okazaki T, Hashiya T, Nozawa K, Yasuike S, Kurita J, Yamamoto C, Hamada N, Kaji T. Effects of Substitution on Cytotoxicity of Diphenyl Ditelluride in Cultured Vascular Endothelial Cells. Int J Mol Sci 2021; 22:ijms221910520. [PMID: 34638861 PMCID: PMC8531998 DOI: 10.3390/ijms221910520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 11/28/2022] Open
Abstract
Among organic–inorganic hybrid molecules consisting of organic structure(s) and metal(s), only few studies are available on the cytotoxicity of nucleophilic molecules. In the present study, we investigated the cytotoxicity of a nucleophilic organotellurium compound, diphenyl ditelluride (DPDTe), using a cell culture system. DPDTe exhibited strong cytotoxicity against vascular endothelial cells and fibroblasts along with high intracellular accumulation but showed no cytotoxicity and had less accumulation in vascular smooth muscle cells and renal epithelial cells. The cytotoxicity of DPDTe decreased when intramolecular tellurium atoms were replaced with selenium or sulfur atoms. Electronic state analysis revealed that the electron density between tellurium atoms in DPDTe was much lower than those between selenium atoms of diphenyl diselenide and sulfur atoms of diphenyl disulfide. Moreover, diphenyl telluride did not accumulate and exhibit cytotoxicity. The cytotoxicity of DPDTe was also affected by substitution. p-Dimethoxy-DPDTe showed higher cytotoxicity, but p-dichloro-DPDTe and p-methyl-DPDTe showed lower cytotoxicity than that of DPDTe. The subcellular distribution of the compounds revealed that the compounds with stronger cytotoxicity showed higher accumulation rates in the mitochondria. Our findings suggest that the electronic state of tellurium atoms in DPDTe play an important role in accumulation and distribution of DPDTe in cultured cells. The present study supports the hypothesis that nucleophilic organometallic compounds, as well as electrophilic organometallic compounds, exhibit cytotoxicity by particular mechanisms.
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Affiliation(s)
- Takato Hara
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi 274-8510, Japan; (T.H.); (C.Y.)
| | - Takahiro Okazaki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan; (T.O.); (T.H.)
| | - Tamayo Hashiya
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan; (T.O.); (T.H.)
| | - Kyohei Nozawa
- Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan;
| | - Shuji Yasuike
- School of Pharmaceutical Sciences, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan;
| | - Jyoji Kurita
- Faculty of Pharmaceutical Sciences, Hokuriku University, Ho-3 Kanagawa-machi, Kanazawa 920-1181, Japan;
| | - Chika Yamamoto
- Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi 274-8510, Japan; (T.H.); (C.Y.)
| | - Noriaki Hamada
- Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan;
- Correspondence: (N.H.); (T.K.)
| | - Toshiyuki Kaji
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan; (T.O.); (T.H.)
- Correspondence: (N.H.); (T.K.)
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2
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Toxicology and pharmacology of synthetic organoselenium compounds: an update. Arch Toxicol 2021; 95:1179-1226. [PMID: 33792762 PMCID: PMC8012418 DOI: 10.1007/s00204-021-03003-5] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022]
Abstract
Here, we addressed the pharmacology and toxicology of synthetic organoselenium compounds and some naturally occurring organoselenium amino acids. The use of selenium as a tool in organic synthesis and as a pharmacological agent goes back to the middle of the nineteenth and the beginning of the twentieth centuries. The rediscovery of ebselen and its investigation in clinical trials have motivated the search for new organoselenium molecules with pharmacological properties. Although ebselen and diselenides have some overlapping pharmacological properties, their molecular targets are not identical. However, they have similar anti-inflammatory and antioxidant activities, possibly, via activation of transcription factors, regulating the expression of antioxidant genes. In short, our knowledge about the pharmacological properties of simple organoselenium compounds is still elusive. However, contrary to our early expectations that they could imitate selenoproteins, organoselenium compounds seem to have non-specific modulatory activation of antioxidant pathways and specific inhibitory effects in some thiol-containing proteins. The thiol-oxidizing properties of organoselenium compounds are considered the molecular basis of their chronic toxicity; however, the acute use of organoselenium compounds as inhibitors of specific thiol-containing enzymes can be of therapeutic significance. In summary, the outcomes of the clinical trials of ebselen as a mimetic of lithium or as an inhibitor of SARS-CoV-2 proteases will be important to the field of organoselenium synthesis. The development of computational techniques that could predict rational modifications in the structure of organoselenium compounds to increase their specificity is required to construct a library of thiol-modifying agents with selectivity toward specific target proteins.
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3
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Wang X, Huan Y, Li C, Cao H, Sun S, Lei L, Liu Q, Liu S, Ji W, Liu H, Huang K, Zhou J, Shen Z. Diphenyl diselenide alleviates diabetic peripheral neuropathy in rats with streptozotocin-induced diabetes by modulating oxidative stress. Biochem Pharmacol 2020; 182:114221. [DOI: 10.1016/j.bcp.2020.114221] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/13/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022]
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4
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Dos Santos MM, de Macedo GT, Prestes AS, Ecker A, Müller TE, Leitemperger J, Fontana BD, Ardisson-Araújo DMP, Rosemberg DB, Barbosa NV. Modulation of redox and insulin signaling underlie the anti-hyperglycemic and antioxidant effects of diphenyl diselenide in zebrafish. Free Radic Biol Med 2020; 158:20-31. [PMID: 32544425 DOI: 10.1016/j.freeradbiomed.2020.06.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/01/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022]
Abstract
The organic selenium compound diphenyl diselenide (DD) has been recognized as an antioxidant and neuroprotective agent, exerting an anti-hyperglycemic effect in experimental models of diabetes. However, the precise mechanisms involved in the protection are unclear. Using the zebrafish (Danio rerio) as a model organism, here we investigated biomarkers underlying the protective effects of DD against hyperglycemia, targeting in a transcriptional approach the redox and insulin-signaling pathway. Fish were fed on a diet containing DD (3 mg/kg) for 74 days. In the last 14 days, they were exposed to a 111 mM glucose solution to induce a hyperglycemic state. DD reduced blood glucose levels as well as normalized the brain mRNA transcription of four insulin receptors-coding genes (Insra1, Insra2, Insrb1, Insrb2), which were down-regulated by glucose. DD alone caused an up-regulation of relative mRNA transcription in both Insra receptors and glucose transporter 3 genes. DD counteracted hyperglycemia-induced lipid peroxidation, protein and thiol depletion. Along with the decreased activity of antioxidant enzymes SOD and GPx, the brain of hyperglycemic fish presented a reduction in mRNA transcription of FoxO3A, FoxO3B, Nrf2, GPx3A, SOD1, and SOD2 genes. Besides normalizing the transcriptional levels, DD caused an up-regulation of relative mRNAs that encode Nrf2, FoxO1A, FOXO3A, GPx4A, PTP1B, AKT and SelP. Collectively, our findings suggest that the antioxidant and anti-hyperglycemic actions of DD in a zebrafish diabetes model are likely associated with the regulation of the oxidative stress resistance and the insulin-signaling pathway and that could be related to the modulation at mRNA level of two important transcription factors, Nrf2 and FoxO.
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Affiliation(s)
- Matheus M Dos Santos
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Gabriel T de Macedo
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Alessandro S Prestes
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Assis Ecker
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Talise E Müller
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Jossiele Leitemperger
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Bárbara D Fontana
- Brain and Behaviour Laboratory, School of Pharmacy and Biomedical Sciences, University of Portsmouth, England, UK
| | - Daniel M P Ardisson-Araújo
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil
| | - Denis B Rosemberg
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil; Zebrafish Neuroscience Research Consortium (ZNRC), 309 Palmer Court, Slidell, LA, 70458, USA
| | - Nilda V Barbosa
- Programa de Pós-graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Avenida Roraima, 1000, 97105-900, Santa Maria, RS, Brazil.
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5
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Radatz CS, Coelho FL, Gil ES, da Silveira Santos F, Schneider JMFM, Gonçalves PFB, Rodembusch FS, Schneider PH. Ground and excited-state properties of 1,3-benzoselenazole derivatives: A combined theoretical and experimental photophysical investigation. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Hariharan S, Dharmaraj S. Selenium and selenoproteins: it's role in regulation of inflammation. Inflammopharmacology 2020; 28:667-695. [PMID: 32144521 PMCID: PMC7222958 DOI: 10.1007/s10787-020-00690-x] [Citation(s) in RCA: 256] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 02/06/2020] [Indexed: 12/22/2022]
Abstract
Abstract Selenium is an essential immunonutrient which holds the human’s metabolic activity with its chemical bonds. The organic forms of selenium naturally present in human body are selenocysteine and selenoproteins. These forms have a unique way of synthesis and translational coding. Selenoproteins act as antioxidant warriors for thyroid regulation, male-fertility enhancement, and anti-inflammatory actions. They also participate indirectly in the mechanism of wound healing as oxidative stress reducers. Glutathione peroxidase (GPX) is the major selenoprotein present in the human body, which assists in the control of excessive production of free radical at the site of inflammation. Other than GPX, other selenoproteins include selenoprotein-S that regulates the inflammatory cytokines and selenoprotein-P that serves as an inducer of homeostasis. Previously, reports were mainly focused on the cellular and molecular mechanism of wound healing with reference to various animal models and cell lines. In this review, the role of selenium and its possible routes in translational decoding of selenocysteine, synthesis of selenoproteins, systemic action of selenoproteins and their indirect assimilation in the process of wound healing are explained in detail. Some of the selenium containing compounds which can acts as cancer preventive and therapeutics are also discussed. These compounds directly or indirectly exhibit antioxidant properties which can sustain the intracellular redox status and these activities protect the healthy cells from reactive oxygen species induced oxidative damage. Although the review covers the importance of selenium/selenoproteins in wound healing process, still some unresolved mystery persists which may be resolved in near future. Graphic abstract ![]()
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Affiliation(s)
- Sneha Hariharan
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India
| | - Selvakumar Dharmaraj
- Department of Biochemistry, Karpagam Academy of Higher Education, Eachanari Post, Pollachi Main Road, Coimbatore, Tamil Nadu, 641021, India.
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7
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Yamakawa GR, Eyolfson E, Weerawardhena H, Mychasiuk R. Administration of diphenyl diselenide (PhSe)2 following repetitive mild traumatic brain injury exacerbates anxiety-like symptomology in a rat model. Behav Brain Res 2020; 382:112472. [DOI: 10.1016/j.bbr.2020.112472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 01/05/2020] [Accepted: 01/05/2020] [Indexed: 02/07/2023]
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8
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Bortoli M, Bruschi M, Swart M, Orian L. Sequential oxidations of phenylchalcogenides by H2O2: insights into the redox behavior of selenium via DFT analysis. NEW J CHEM 2020. [DOI: 10.1039/c9nj06449d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The biological activity of sulfur and selenium, despite their similarity, shows some remarkable differences that have been recognized in many different scenarios.
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Affiliation(s)
- Marco Bortoli
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Via Marzolo 1
- 35131 Padova
- Italy
| | - Matteo Bruschi
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Via Marzolo 1
- 35131 Padova
- Italy
| | - Marcel Swart
- University of Girona
- Campus Montilivi (Ciències)
- IQCC
- 17003 Girona
- Spain
| | - Laura Orian
- Dipartimento di Scienze Chimiche
- Università degli Studi di Padova
- Via Marzolo 1
- 35131 Padova
- Italy
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9
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Tiezza MD, Ribaudo G, Orian L. Organodiselenides: Organic Catalysis and Drug Design Learning from Glutathione Peroxidase. CURR ORG CHEM 2019. [DOI: 10.2174/1385272822666180803123137] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Organodiselenides are an important class of compounds characterized by the
presence of two adjacent covalently bonded selenium nuclei. Among them,
diaryldiselenides and their parent compound diphenyl diselenide attract continuing interest
in chemistry as well as in close disciplines like medicinal chemistry, pharmacology and
biochemistry. A search in SCOPUS database has revealed that in the last three years 105
papers have been published on the archetypal diphenyl diselenide and its use in organic
catalysis and drug tests. The reactivity of the Se-Se bond and the redox properties of selenium
make diselenides efficient catalysts for numerous organic reactions, such as Bayer-
Villiger oxidations of aldehydes/ketones, epoxidations of alkenes, oxidations of alcohols
and nitrogen containing compounds. In addition, organodiselenides might find application
as mimics of glutathione peroxidase (GPx), a family of enzymes, which, besides performing other functions,
regulate the peroxide tone in the cells and control the oxidative stress level. In this review, the essential synthetic
and reactivity aspects of organoselenides are collected and rationalized using the results of accurate
computational studies, which have been carried out mainly in the last two decades. The results obtained in
silico provide a clear explanation of the anti-oxidant activity of organodiselenides and more in general of their
ability to reduce hydroperoxides. At the same time, they are useful to gain insight into some aspects of the enzymatic
activity of the GPx, inspiring novel elements for rational catalyst and drug design.
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Affiliation(s)
- Marco Dalla Tiezza
- Dipartimento di Scienze Chimiche, Universita degli Studi di, Via Marzolo 1, 35131 Padova, Italy
| | - Giovanni Ribaudo
- Dipartimento di Scienze del Farmaco, Universita degli Studi di Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Laura Orian
- Dipartimento di Scienze Chimiche, Universita degli Studi di, Via Marzolo 1, 35131 Padova, Italy
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10
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Gandin V, Khalkar P, Braude J, Fernandes AP. Organic selenium compounds as potential chemotherapeutic agents for improved cancer treatment. Free Radic Biol Med 2018; 127:80-97. [PMID: 29746900 DOI: 10.1016/j.freeradbiomed.2018.05.001] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/12/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022]
Abstract
Selenium(Se)-containing compounds have attracted a growing interest as anticancer agents over recent decades, with mounting reports demonstrating their high efficacy and selectivity against cancer cells. Typically, Se compounds exert their cytotoxic effects by acting as pro-oxidants that alter cellular redox homeostasis. However, the precise intracellular targets, signalling pathways affected and mechanisms of cell death engaged following treatment vary with the chemical properties of the selenocompound and its metabolites, as well as the cancer model that is used. Naturally occurring organic Se compounds, besides encompassing a significant antitumor activity with an apparent ability to prevent metastasis, also seem to have fewer side effects and less systemic effects as reported for many inorganic Se compounds. On this basis, many novel organoselenium compounds have also been synthesized and examined as potential chemotherapeutic agents. This review aims to summarize the most well studied natural and synthetic organoselenium compounds and provide the most recent developments in our understanding of the molecular mechanisms that underlie their potential anticancer effects.
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Affiliation(s)
- Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Prajakta Khalkar
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Jeremy Braude
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Aristi P Fernandes
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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11
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Thomé GR, Oliveira VA, Chitolina Schetinger MR, Saraiva RA, Souza D, Dorneles Rodrigues OE, Teixeira Rocha JB, Ineu RP, Pereira ME. Selenothymidine protects against biochemical and behavioral alterations induced by ICV-STZ model of dementia in mice. Chem Biol Interact 2018; 294:135-143. [PMID: 30120923 DOI: 10.1016/j.cbi.2018.08.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/10/2018] [Accepted: 08/10/2018] [Indexed: 11/29/2022]
Abstract
The present study evaluated the neuroprotective effects of one selenium-containing AZT derivative compound (S1073) in memory and learning impairment caused by Intracerebroventricular-streptozotocin (ICV-STZ). ICV-STZ in mice causes impairment of energy metabolism with oxidative damage and cholinergic dysfunction, and provides a relevant model for sporadic dementia of Alzheimer's type (AD). Acetylcolinesterase (AChE), Catalase (CAT), dichlorofluorescein oxidation (DCFH), TBARS and thiol content were measured. Swiss adult mice were pre-treated with S1073 [1 mmol/kg] (i.p.) and after 30 min of the injection received a bilateral dose of STZ [11.3 μmol/l]. After 8 days' STZ injection, we performed the behavioral experiments (Beaker test, Open field and Morris water maze task). ICV-STZ caused significant learning and memory impairments, which were significantly improved by S1073 pre-treatment. A significant increase in cerebral DFCH, TBARS levels and AChE activity and a disturbance in the memory and learning were observed in ICV-STZ injected animals. S1073 significantly ameliorated all alterations induced by ICV-STZ in mice. All these findings support the neuroprotective role of S1073 in mice model of Alzheimer's dementia-type induced by ICV-STZ, which may be associated with its antioxidant activity and/or with its inhibitory effect in brain AChE. In fact, in silico analysis indicated that S1073 may be an inhibitor of AChE.
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Affiliation(s)
- Gustavo Roberto Thomé
- Federal Technology University of Paraná, Post-Graduation Program of Chemical and Biochemical Processes, Brazil.
| | | | - Maria Rosa Chitolina Schetinger
- Federal University of Santa Maria, Post-Graduation Program of Biological Sciences: Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Brazil
| | | | - Diego Souza
- Federal University of Santa Maria, Post-Graduation Program of Biological Sciences: Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Brazil
| | - Oscar Endrigo Dorneles Rodrigues
- Federal University of Santa Maria, Post-Graduation Program of Biological Sciences: Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Brazil
| | - João Batista Teixeira Rocha
- Federal University of Santa Maria, Post-Graduation Program of Biological Sciences: Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Brazil
| | - Rafael Porto Ineu
- Federal Technology University of Paraná, Post-Graduation Program of Food Technology, Brazil
| | - Maria Ester Pereira
- Federal University of Santa Maria, Post-Graduation Program of Biological Sciences: Toxicological Biochemistry, Department of Biochemistry and Molecular Biology, Brazil
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12
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Barbosa NV, Nogueira CW, Nogara PA, de Bem AF, Aschner M, Rocha JBT. Organoselenium compounds as mimics of selenoproteins and thiol modifier agents. Metallomics 2017; 9:1703-1734. [PMID: 29168872 DOI: 10.1039/c7mt00083a] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Selenium is an essential trace element for animals and its role in the chemistry of life relies on a unique functional group: the selenol (-SeH) group. The selenol group participates in critical redox reactions. The antioxidant enzymes glutathione peroxidase (GPx) and thioredoxin reductase (TrxR) exemplify important selenoproteins. The selenol group shares several chemical properties with the thiol group (-SH), but it is much more reactive than the sulfur analogue. The substitution of S by Se has been exploited in organic synthesis for a long time, but in the last 4 decades the re-discovery of ebselen (2-phenyl-1,2-benzisoselenazol-3(2H)-one) and the demonstration that it has antioxidant and therapeutic properties has renovated interest in the field. The ability of ebselen to mimic the reaction catalyzed by GPx has been viewed as the most important molecular mechanism of action of this class of compound. The term GPx-like or thiol peroxidase-like reaction was previously coined in the field and it is now accepted as the most important chemical attribute of organoselenium compounds. Here, we will critically review the literature on the capacity of organoselenium compounds to mimic selenoproteins (particularly GPx) and discuss some of the bottlenecks in the field. Although the GPx-like activity of organoselenium compounds contributes to their pharmacological effects, the superestimation of the GPx-like activity has to be questioned. The ability of these compounds to oxidize the thiol groups of proteins (the thiol modifier effects of organoselenium compounds) and to spare selenoproteins from inactivation by soft-electrophiles (MeHg+, Hg2+, Cd2+, etc.) might be more relevant for the explanation of their pharmacological effects than their GPx-like activity. In our view, the exploitation of the thiol modifier properties of organoselenium compounds can be harnessed more rationally than the use of low mass molecular structures to mimic the activity of high mass macromolecules that have been shaped by millions to billions of years of evolution.
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Affiliation(s)
- Nilda V Barbosa
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Cristina W Nogueira
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Pablo A Nogara
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Andreza F de Bem
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - João B T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
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13
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Barros LM, Duarte AE, Pansera Waczuk E, Roversi K, da Cunha FAB, Rolon M, Coronel C, Gomez MCV, de Menezes IRA, da Costa JGM, Boligon AA, Hassan W, Souza DO, da Rocha JBT, Kamdem JP. Safety assessment and antioxidant activity of Lantana montevidensis leaves: Contribution to its phytochemical and pharmacological activity. EXCLI JOURNAL 2017; 16:566-582. [PMID: 28694758 PMCID: PMC5491919 DOI: 10.17179/excli2017-163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 04/10/2017] [Indexed: 12/25/2022]
Abstract
Lantana camara, the widely studied species, and L. montevidensis, the less studied species of the genus Lantana are both used in traditional medicine for the same purpose (anti-asthma, anti-ulcer, anti-tumor, etc). However, little is known about the toxicity of L. montevidensis and there is limited information on its chemical constituents. Here, we investigated for the first time the genotoxicity and cytotoxicity of the ethanolic (EtOH) and aqueous extracts from the leaves of Lantana montevidensis in human leukocytes, as well as their possible interaction with human erythrocyte membranes in vitro. The antioxidant activities of both extracts were also investigated in chemical and biological models. Treatment of leukocytes with EtOH or aqueous extracts (1-480 µg/mL) did not affect DNA damage index, but promoted cytotoxicity at higher concentrations (240-480 µg/mL). Both extracts did not modify the osmotic fragility of human erythrocytes. The extracts scavenged DPPH radical and prevented Fe2+-induced lipid peroxidation in rat's brain and liver homogenates, and this was likely not attributed to Fe (II) chelation. The HPLC analysis of the extracts showed different amounts of polyphenolic compounds (isoquercitrin, gallic acid, catechin, ellagic acid, apigenin, kaempferol, caffeic acid, rutin, quercitrin, quercetin, chlorogenic acid, luteolin) that may have contributed to these effects. These results supported information on the functional use of L. montevidensis in folk medicine.
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Affiliation(s)
- Luiz Marivando Barros
- Universidade Regional do Cariri-URCA, Centro de Ciências Biológicas e da Saúde-CCBS, Departamento de Ciências Biológicas, CEP: 63105-000, Pimenta, Crato-Ceará, Brazil.,Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Antonia Eliene Duarte
- Universidade Regional do Cariri-URCA, Centro de Ciências Biológicas e da Saúde-CCBS, Departamento de Ciências Biológicas, CEP: 63105-000, Pimenta, Crato-Ceará, Brazil.,Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Emily Pansera Waczuk
- Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Katiane Roversi
- Departamento de Farmacologia, Programa de Pós-Graduação em Ciências Farmacêuticas, Farmatox, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Francisco Assis Bezerra da Cunha
- Universidade Regional do Cariri-URCA, Centro de Ciências Biológicas e da Saúde-CCBS, Departamento de Ciências Biológicas, CEP: 63105-000, Pimenta, Crato-Ceará, Brazil.,Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Mirian Rolon
- Centro Para El Desarrollo de La Investigación Científica (CEDIC),Fundación Moisés Bertoni /Laboratorios Diaz Gill, Asuncion, Paraguay
| | - Cathia Coronel
- Centro Para El Desarrollo de La Investigación Científica (CEDIC),Fundación Moisés Bertoni /Laboratorios Diaz Gill, Asuncion, Paraguay
| | - Maria Celeste Vega Gomez
- Centro Para El Desarrollo de La Investigación Científica (CEDIC),Fundación Moisés Bertoni /Laboratorios Diaz Gill, Asuncion, Paraguay
| | - Irwin Rose Alencar de Menezes
- Universidade Regional do Cariri-URCA, Departamento de Química Biológica, Laboratório de Farmacologia, Crato-Ceará, Brazil
| | - José Galberto Martins da Costa
- Universidade Regional do Cariri-URCA, Departamento de Química Biológica, Laboratório de Pesquisas de Produtos Naturais, CEP 63.105.000, Crato-Ceará, Brazil
| | - Aline Augusti Boligon
- Laboratório de Fitoquímica, Departamento de Farmácia Industrial, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Waseem Hassan
- Institute of Chemical Sciences, University of Peshawar, Peshawar -25120, Khyber Pakhtunkhwa, Pakistan
| | - Diogo Onofre Souza
- Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
| | - João Batista Teixeira da Rocha
- Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil
| | - Jean Paul Kamdem
- Universidade Regional do Cariri-URCA, Centro de Ciências Biológicas e da Saúde-CCBS, Departamento de Ciências Biológicas, CEP: 63105-000, Pimenta, Crato-Ceará, Brazil.,Departamento de Bioquímica e Biologia Molecular, Programa de Pós-Graduação em Bioquímica Toxicológica, Universidade Federal de Santa Maria, Santa Maria, RS 97105-900, Brazil.,Departamento de Bioquímica, Instituto de Ciências Básica da Saúde, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS CEP 90035-003, Brazil
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14
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Meinerz DF, Branco V, Aschner M, Carvalho C, Rocha JBT. Diphenyl diselenide protects against methylmercury-induced inhibition of thioredoxin reductase and glutathione peroxidase in human neuroblastoma cells: a comparison with ebselen. J Appl Toxicol 2017; 37:1073-1081. [DOI: 10.1002/jat.3458] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/30/2017] [Accepted: 01/31/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Daiane F. Meinerz
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
| | - Vasco Branco
- Research Institute for Medicines (iMed.ULisboa); Faculty of Pharmacy, Universidade de Lisboa; Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - Michael Aschner
- Department of Molecular Pharmacology; Albert Einstein College of Medicine; Forchheimer 209, 1300 Morris Park Avenue Bronx NY 10461 USA
| | - Cristina Carvalho
- Research Institute for Medicines (iMed.ULisboa); Faculty of Pharmacy, Universidade de Lisboa; Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - João Batista T. Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas; Universidade Federal de Santa Maria; 97105-900 Santa Maria RS Brazil
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15
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Gómez Castaño JA, Romano RM, Salamanca AR, Amésquita G, Beckers H, Willner H, Della Védova CO. Vibrational spectra, conformational properties and argon matrix photochemistry of diacetyl diselenide, CH3C(O)Se2C(O)CH3. J PHYS ORG CHEM 2016. [DOI: 10.1002/poc.3587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jovanny A. Gómez Castaño
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas; Universidad Nacional de La Plata; 47 esq. 115 1900 La Plata Argentina
- Laboratorio de Química Teórica y Computacional, Grupo de Investigación Química-Física Molecular y Modelamiento Computacional (QUIMOL), Facultad de Ciencias; Universidad Pedagógica y Tecnológica de Colombia (UPTC); Avenida Central del Norte Tunja Boyacá Colombia
| | - Rosana M. Romano
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas; Universidad Nacional de La Plata; 47 esq. 115 1900 La Plata Argentina
| | - Ana R. Salamanca
- Laboratorio de Química Teórica y Computacional, Grupo de Investigación Química-Física Molecular y Modelamiento Computacional (QUIMOL), Facultad de Ciencias; Universidad Pedagógica y Tecnológica de Colombia (UPTC); Avenida Central del Norte Tunja Boyacá Colombia
| | - Germán Amésquita
- Grupo de Investigación en Informática, Electrónica y Comunicaciones (INFELCOM), Facultad de Ingenieria; Universidad Pedagógica y Tecnológica de Colombia (UPTC); Avenida Central del Norte Tunja Boyacá Colombia
| | - Helmut Beckers
- Anorganische Chemie; Bergische Universität Wuppertal; Gaußstr. 20 D-42097 Wuppertal Germany
| | - Helge Willner
- Anorganische Chemie; Bergische Universität Wuppertal; Gaußstr. 20 D-42097 Wuppertal Germany
| | - Carlos O. Della Védova
- CEQUINOR (UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas; Universidad Nacional de La Plata; 47 esq. 115 1900 La Plata Argentina
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16
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Adedara IA, Klimaczewski CV, Barbosa NBV, Farombi EO, Souza DO, Rocha JBT. Influence of diphenyl diselenide on chlorpyrifos-induced toxicity in Drosophila melanogaster. J Trace Elem Med Biol 2015; 32:52-9. [PMID: 26302912 DOI: 10.1016/j.jtemb.2015.05.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/06/2015] [Accepted: 05/15/2015] [Indexed: 01/06/2023]
Abstract
Exposure to chlorpyrifos (CPF) poses several harmful effects to human and animal health. The present study investigated the influence of diphenyl diselenide (DPDS) on CPF-induced toxicity in Drosophila melanogaster. Firstly, the time course lethality response of virgin flies (2- to 3-day-old) to CPF (0.075-0.6μg/g) and DPDP (5-40μmol/kg) in the diet for 28 consecutive days were investigated. Subsequently, the protective effect of DPDS (10, 20 and 40μmol/kg) on CPF (0.15μg/g)-induced mortality, locomotor deficits, neurotoxicity and oxidative stress was assessed in a co-exposure paradigm for 7 days. Results showed that CPF exposure significantly decreased the percent live flies in a time- and concentration-dependent manner, whereas the percent live flies with DPDS treatment was not statistically different from control following 28 days of treatment. In the co-exposure study, CPF significantly increased flies mortality while the survivors exhibited significant locomotor deficits with decreased acetylcholinesterase (AChE) activity. Dietary supplementation with DPDS was associated with marked decrease in mortality, improvement in locomotor activity and restoration of AChE activity in CPF-exposed flies. Moreover, CPF exposure significantly decreased catalase and glutathione-S-transferase activities, total thiol level with concomitant significant elevation in the levels of reactive oxygen species and thiobarbituric acid reactive substances in the head and body regions of the treated flies. Dietary supplementation with DPDS significantly improved the antioxidant status and prevented CPF-induced oxidative stress, thus demonstrating the protective effect of DPDS in CPF-treated flies.
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Affiliation(s)
- Isaac A Adedara
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil; Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil; Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Claudia V Klimaczewski
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Nilda B V Barbosa
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Diogo O Souza
- Departamento de Bioquímica, Instituto de Ciências Básicas da Saúde, Universidade Federal do Rio Grande do Sul, Rua Ramiro Barcelos 2600-Anexo, 90035-003 Porto Alegre, RS, Brazil
| | - Joao B T Rocha
- Departamento de Bioquímica e Biologia Molecular, CCNE, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil.
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17
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Organoselenocyanates and symmetrical diselenides redox modulators: Design, synthesis and biological evaluation. Eur J Med Chem 2015; 97:190-201. [PMID: 25969171 DOI: 10.1016/j.ejmech.2015.05.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 04/25/2015] [Accepted: 05/02/2015] [Indexed: 12/16/2022]
Abstract
Oxidative stress (OS) and disturbed intracellular redox balance have been predominantly observed in different types of cancer, including hepatocellular carcinoma (HCC). Agents which can stop OS multi-stressor events and modulate the intracellular redox state are becoming a major focus in HCC prevention. Among them, compounds with glutathione peroxidase (GPx)-like activity are of particularly concern. We herein report the synthesis of novel series of organoselenocyanates and symmetrical diselenide antioxidants, inspired by the natural redox enzyme, GPx and the synthetic organoselenium ebselen antioxidants. Their cytotoxic activity was evaluated against Hep G2 cells and their antimicrobial activities were evaluated against Candida albicans (C. albicans) fungus as well as against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), gram-negative and gram-positive bacteria, respectively. These compounds were also tested for their antioxidant activities using 2,2-diphenyl-1-picrylhydrazyl (DPPH), GPx-like activity and bleomycin dependent DNA damage assays and a basic structure-activity relationship was subsequently established. The physicochemical parameters and drug-likeness were computed employing the Molinspiration online property calculation toolkit and MolSoft software. Interestingly, some compounds proved to be more cytotoxic than ebselen and the known anticancer drug 5-Fu and in the same time they showed similar, sometime even more, antifungal activity than the reference antifungal drugs. Among these compounds, compound 16 was considered to be the most interesting with free radical-scavenging activity comparable to ascorbic acid and a GPx-like activity similar to ebselen. As most of these compounds comply with Lipinski's Rule of Five, they promise good bioavailability, which needs to be studied as part of future investigations.
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18
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Rusetskaya NY, Borodulin VB. Biological activity of organoselenium compounds in heavy metal intoxication. BIOCHEMISTRY MOSCOW-SUPPLEMENT SERIES B-BIOMEDICAL CHEMISTRY 2015. [DOI: 10.1134/s1990750815010072] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Rusetskaya N, Borodulin V. Biological activity of selenorganic compounds at heavy metal salts intoxication. ACTA ACUST UNITED AC 2015; 61:449-61. [DOI: 10.18097/pbmc20156104449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Possible mechanisms of the antitoxic action of organoselenium compounds in heavy metal poisoning have been considered. Heavy metal toxicity associated with intensification of free radical oxidation, suppression of the antioxidant system, damage to macromolecules, mitochondria and the genetic material can cause apoptotic cell death or the development of carcinogenesis. Organic selenium compounds are effective antioxidants during heavy metal poisoning; they exhibit higher bioavailability in mammals than inorganic ones and they are able to activate antioxidant defense, bind heavy metal ions and reactive oxygen species formed during metal-induced oxidative stress. One of promising organoselenium compounds is diacetophenonyl selenide (DAPS-25), which is characterized by antioxidant and antitoxic activity, under conditions including heavy metal intoxication
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Affiliation(s)
- N.Y. Rusetskaya
- Razumovskiy Saratov State Medical University, Saratov, Russia
| | - V.B. Borodulin
- Razumovskiy Saratov State Medical University, Saratov, Russia
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20
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Stefanello ST, Flores da Rosa EJ, Dobrachinski F, Amaral GP, Rodrigues de Carvalho N, Almeida da Luz SC, Bender CR, Schwab RS, Dornelles L, Soares FAA. Effect of diselenide administration in thioacetamide-induced acute neurological and hepatic failure in mice. Toxicol Res (Camb) 2015. [DOI: 10.1039/c4tx00166d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hepatic encephalopathy is a common complication of severe acute hepatic failure and has been associated with high short-term mortality rates.
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21
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Redox Changes Induced by General Anesthesia in Critically Ill Patients with Multiple Traumas. Mol Biol Int 2015; 2015:238586. [PMID: 26693352 PMCID: PMC4674615 DOI: 10.1155/2015/238586] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 10/15/2015] [Indexed: 01/07/2023] Open
Abstract
The critically ill polytrauma patient is a constant challenge for the trauma team due to the complexity of the complications presented. Intense inflammatory response and infections, as well as multiple organ dysfunctions, significantly increase the rate of morbidity and mortality in these patients. Moreover, due to the physiological and biochemical imbalances present in this type of patients, the bioproduction of free radicals is significantly accelerated, thus installing the oxidative stress. In the therapeutic management of such patients, multiple surgical interventions are required and therefore they are being subjected to repeated general anesthesia. In this paper, we want to present the pathophysiological implications of oxidative stress in critically ill patients with multiple traumas and the implications of general anesthesia on the redox mechanisms of the cell. We also want to summarize the antioxidant treatments able to reduce the intensity of oxidative stress by modulating the biochemical activity of some cellular mechanisms.
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22
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Cardoso BR, Roberts BR, Bush AI, Hare DJ. Selenium, selenoproteins and neurodegenerative diseases. Metallomics 2015; 7:1213-28. [DOI: 10.1039/c5mt00075k] [Citation(s) in RCA: 164] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A review of selenium's essential role in normal brain function and its potential involvement in neurodegenerative diseases.
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Affiliation(s)
- Bárbara Rita Cardoso
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville, Australia
- Faculty of Pharmaceutical Sciences
- Department of Food and Experimental Nutrition
| | - Blaine R. Roberts
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville, Australia
| | - Ashley I. Bush
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville, Australia
| | - Dominic J. Hare
- The Florey Institute of Neuroscience and Mental Health
- The University of Melbourne
- Parkville, Australia
- Elemental Bio-imaging Facility
- University of Technology Sydney
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23
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Nascimento V, Ferreira NL, Canto RF, Schott KL, Waczuk EP, Sancineto L, Santi C, Rocha JB, Braga AL. Synthesis and biological evaluation of new nitrogen-containing diselenides. Eur J Med Chem 2014; 87:131-9. [DOI: 10.1016/j.ejmech.2014.09.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Revised: 09/06/2014] [Accepted: 09/06/2014] [Indexed: 12/15/2022]
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24
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Roy SS, Chakraborty P, Biswas J, Bhattacharya S. 2-[5-Selenocyanato-pentyl]-6-amino-benzo[de]isoquinoline-1,3-dione inhibits angiogenesis, induces p53 dependent mitochondrial apoptosis and enhances therapeutic efficacy of cyclophosphamide. Biochimie 2014; 105:137-48. [DOI: 10.1016/j.biochi.2014.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 07/07/2014] [Indexed: 01/08/2023]
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25
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Kiełczykowska M, Kocot J, Kurzepa J, Lewandowska A, Żelazowska R, Musik I. Could selenium administration alleviate the disturbances of blood parameters caused by lithium administration in rats? Biol Trace Elem Res 2014; 158:359-64. [PMID: 24676629 PMCID: PMC4012153 DOI: 10.1007/s12011-014-9952-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/18/2014] [Indexed: 11/25/2022]
Abstract
Lithium is widely used in medicine, but its administration can cause numerous side effects. The present study aimed at the evaluation of the possible application of selenium, an essential and antioxidant element, as a protective agent against lithium toxicity. The experiment was performed on four groups of Wistar rats: I (control)-treated with saline, II (Li)-treated with lithium (Li2CO3), III (Se)-treated with selenium (Na2SeO3) and IV (Li + Se)-treated with lithium and selenium (Li2CO3 and Na2SeO3) in the form of water solutions by stomach tube for 6 weeks. The following biochemical parameters were measured: concentrations of sodium, potassium, calcium, magnesium, phosphorus, iron, urea, creatinine, cholesterol, glucose, total protein and albumin and activities of alkaline phosphatase, aspartate aminotransferase and alanine aminotransferase in serum as well as whole blood superoxide dismutase and glutathione peroxidase. Morphological parameters such as red blood cells, haemoglobin, haematocrit, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration, platelets, white blood cells, neutrophils as well as lymphocytes were determined. Lithium significantly increased serum calcium and glucose (2.65 ± 0.17 vs. 2.43 ± 0.11; 162 ± 31 vs. 121 ± 14, respectively), whereas magnesium and albumin were decreased (1.05 ± 0.08 vs. 1.21 ± 0.15; 3.85. ± 0.12 vs. 4.02 ± 0.08, respectively). Selenium given with lithium restored these parameters to values similar to those observed in the control (Ca-2.49 ± 0.08, glucose-113 ± 26, Mg-1.28 ± 0.09, albumin-4.07 ± 0.11). Se alone or co-administered with Li significantly increased aspartate aminotransferase and glutathione peroxidase. The obtained outcomes let us suggest that the continuation of research on the application of selenium as an adjuvant in lithium therapy seems warranted.
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Affiliation(s)
- Małgorzata Kiełczykowska
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Joanna Kocot
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Jacek Kurzepa
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Anna Lewandowska
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Renata Żelazowska
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Irena Musik
- Chair and Department of Medical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
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26
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Ibrahim M, Hassan W, Anwar J, Deobald AM, Kamdem JP, Souza DO, Rocha JBT. 1-(2-(2-(2-(1-Aminoethyl)phenyl)diselanyl)phenyl)ethanamine: An amino organoselenium compound with interesting antioxidant profile. Toxicol In Vitro 2014; 28:524-30. [DOI: 10.1016/j.tiv.2013.12.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/29/2013] [Accepted: 12/21/2013] [Indexed: 02/02/2023]
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27
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Diphenyl diselenide administration enhances cortical mitochondrial number and activity by increasing hemeoxygenase type 1 content in a methylmercury-induced neurotoxicity mouse model. Mol Cell Biochem 2014; 390:1-8. [DOI: 10.1007/s11010-013-1870-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Accepted: 10/18/2013] [Indexed: 12/12/2022]
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28
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Neuroprotective Effect of Diphenyl Diselenide in a Experimental Stroke Model: Maintenance of Redox System in Mitochondria of Brain Regions. Neurotox Res 2014; 26:317-30. [DOI: 10.1007/s12640-014-9463-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 02/21/2014] [Indexed: 01/07/2023]
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29
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Menezes C, Leitemperger J, Santi A, Dias G, Pedron FA, Neto JR, Salman SM, Barbosa NBV, Loro VL. Evaluation of the effects induced by dietary diphenyl diselenide on common carp Cyprinus carpio. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:141-149. [PMID: 23877622 DOI: 10.1007/s10695-013-9831-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 07/05/2013] [Indexed: 06/02/2023]
Abstract
Several diets employed in aquaculture are enriched with selenium (Se), as it is a fundamental element to aquatic vertebrates. Diphenyl diselenide [(PhSe)₂], which is a synthetic organoselenium compound, has been considered a potential antioxidant agent in different experimental models. Thus, the aim of this study was to evaluate the effects of dietary diphenyl diselenide at concentrations of 1.5, 3.0, and 5.0 mg/kg for 60 days and to determine its optimal supplemental level for carp, Cyprinus carpio. Neither growth retardation nor hepatoxicity was induced by the inclusion of diphenyl diselenide at concentrations ranging from 1.5 to 5.0 mg/kg. In addition, the inclusion of 3.0 mg/kg of diphenyl diselenide stimulated the weight and length of the carp. The supplementation with 1.5 and 3.0 mg/kg of diphenyl diselenide did not produce oxidative damage in the tissues, verified by peroxidation lipid and protein carbonyl assays. However, at 5.0 mg/kg, it caused an increase of the lipid peroxidation in the liver, brain, and muscle, and inhibited the cerebral acetylcholinesterase activity. An increase of the hepatic superoxide dismutase activity and non-protein thiols content in all tissues and ascorbic acid in the liver, gills, and brain was verified in carp fed with the diet containing 3.0 mg/kg of diphenyl diselenide. This diet had advantageous effects for the fish used in experiments. Therefore, this compound could be considered a beneficial dietary supplement for carp nutrition.
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Affiliation(s)
- Charlene Menezes
- Programa de Pós, Graduação em Bioquímica Toxicológica, Santa Maria, Brazil
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30
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Luo Z, Liang L, Sheng J, Pang Y, Li J, Huang L, Li X. Synthesis and biological evaluation of a new series of ebselen derivatives as glutathione peroxidase (GPx) mimics and cholinesterase inhibitors against Alzheimer's disease. Bioorg Med Chem 2014; 22:1355-61. [PMID: 24461494 DOI: 10.1016/j.bmc.2013.12.066] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 12/19/2013] [Accepted: 12/30/2013] [Indexed: 10/25/2022]
Abstract
A series of ebselen derivatives were designed, synthesised and evaluated as inhibitors of cholinesterases (ChEs) and glutathione peroxidase (GPx) mimics. Most of the compounds were found to be potent against AChEs and BuChE, compounds 5e and 5i, proved to be the most potent against AChE with IC₅₀ values of 0.76 and 0.46 μM, respectively. Among these hybrids, most of the compounds were found to be good GPx mimics compare with ebselen. The selected compounds 5e and 5i were also used to determine the catalytic parameters and in vitro hydrogen peroxide scavenging activity. The results indicate that compounds 5e and 5i may be excellent multifunctional agents for the treatment of AD.
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Affiliation(s)
- Zonghua Luo
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Liang Liang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
| | - Jianfei Sheng
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yanqing Pang
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jianheng Li
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ling Huang
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xingshu Li
- Institute of Drug Synthesis and Pharmaceutical Process, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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Dias GRM, de Almeida TM, Sudati JH, Dobrachinski F, Pavin S, Soares FAA, Nogueira CW, Barbosa NBV. Diphenyl diselenide supplemented diet reduces depressive-like behavior in hypothyroid female rats. Physiol Behav 2014; 124:116-22. [DOI: 10.1016/j.physbeh.2013.10.036] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/22/2013] [Accepted: 10/29/2013] [Indexed: 12/26/2022]
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Roseni Mundstock Dias G, Medeiros Golombieski R, de Lima Portella R, Pires do Amaral G, Antunes Soares F, Teixeira da Rocha JB, Wayne Nogueira C, Vargas Barbosa N. Diphenyl diselenide modulates gene expression of antioxidant enzymes in the cerebral cortex, hippocampus and striatum of female hypothyroid rats. Neuroendocrinology 2014; 100:45-59. [PMID: 25012258 DOI: 10.1159/000365515] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 06/24/2014] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Cellular antioxidant signaling can be altered either by thyroid disturbances or by selenium status. AIMS To investigate whether or not dietary diphenyl diselenide can modify the expression of genes of antioxidant enzymes and endpoint markers of oxidative stress under hypothyroid conditions. METHODS Female rats were rendered hypothyroid by continuous exposure to methimazole (MTZ; 20 mg/100 ml in the drinking water) for 3 months. Concomitantly, MTZ-treated rats were either fed or not with a diet containing diphenyl diselenide (5 ppm). mRNA levels of antioxidant enzymes and antioxidant/oxidant status were determined in the cerebral cortex, hippocampus and striatum. RESULTS Hypothyroidism caused a marked upregulation in mRNA expression of catalase, superoxide dismutase (SOD-1, SOD-3), glutathione peroxidase (GPx-1, GPx-4) and thioredoxin reductase (TrxR-1) in brain structures. SOD-2 was increased in the cortex and striatum, while TrxR-2 increased in the cerebral cortex. The increase in mRNA expression of antioxidant enzymes was positively correlated with the Nrf-2 transcription in the cortex and hippocampus. Hypothyroidism caused oxidative stress, namely an increase in lipid peroxidation and reactive oxygen species levels in the hippocampus and striatum, and a decrease in nonprotein thiols in the cerebral cortex. Diphenyl diselenide was effective in reducing brain oxidative stress and normalizing most of the changes observed in gene expression of antioxidant enzymes. CONCLUSION The present work corroborates and extends that hypothyroidism disrupts antioxidant enzyme gene expression and causes oxidative stress in the brain. Furthermore, diphenyl diselenide may be considered a promising molecule to counteract these effects in a hypothyroidism state.
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Affiliation(s)
- Glaecir Roseni Mundstock Dias
- Programa de Pós-Graduação em Bioquímica Toxicológica, Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Santa Maria, Santa Maria, Brazil
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New therapeutic approach: diphenyl diselenide reduces mitochondrial dysfunction in acetaminophen-induced acute liver failure. PLoS One 2013; 8:e81961. [PMID: 24349162 PMCID: PMC3859582 DOI: 10.1371/journal.pone.0081961] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Accepted: 10/18/2013] [Indexed: 01/24/2023] Open
Abstract
The acute liver failure (ALF) induced by acetaminophen (APAP) is closely related to oxidative damage and depletion of hepatic glutathione, consequently changes in cell energy metabolism and mitochondrial dysfunction have been observed after APAP overdose. Diphenyl diselenide [(PhSe)2], a simple organoselenium compound with antioxidant properties, previously demonstrated to confer hepatoprotection. However, little is known about the protective mechanism on mitochondria. The main objective of this study was to investigate the effects (PhSe)2 to reduce mitochondrial dysfunction and, secondly, compare in the liver homogenate the hepatoprotective effects of the (PhSe)2 to the N-acetylcysteine (NAC) during APAP-induced ALF to validate our model. Mice were injected intraperitoneal with APAP (600 mg/kg), (PhSe)2 (15.6 mg/kg), NAC (1200 mg/kg), APAP+(PhSe)2 or APAP+NAC, where the (PhSe)2 or NAC treatment were given 1 h following APAP. The liver was collected 4 h after overdose. The plasma alanine and aspartate aminotransferase activities increased after APAP administration. APAP caused a remarkable increase of oxidative stress markers (lipid peroxidation, reactive species and protein carbonylation) and decrease of the antioxidant defense in the liver homogenate and mitochondria. APAP caused a marked loss in the mitochondrial membrane potential, the mitochondrial ATPase activity, and the rate of mitochondrial oxygen consumption and increased the mitochondrial swelling. All these effects were significantly prevented by (PhSe)2. The effectiveness of (PhSe)2 was similar at a lower dose than NAC. In summary, (PhSe)2 provided a significant improvement to the mitochondrial redox homeostasis and the mitochondrial bioenergetics dysfunction caused by membrane permeability transition in the hepatotoxicity APAP-induced.
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Cytotoxicity and genotoxicity evaluation of organochalcogens in human leucocytes: a comparative study between ebselen, diphenyl diselenide, and diphenyl ditelluride. BIOMED RESEARCH INTERNATIONAL 2013; 2013:537279. [PMID: 24350274 PMCID: PMC3856129 DOI: 10.1155/2013/537279] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Accepted: 11/06/2013] [Indexed: 11/20/2022]
Abstract
Organochalcogens, particularly ebselen, have been used in experimental and clinical trials with borderline efficacy. (PhSe)2 and (PhTe)2 are the simplest of the diaryl dichalcogenides and share with ebselen pharmacological properties. In view of the concerns with the use of mammals in studies and the great number of new organochalcogens with potential pharmacological properties that have been synthesized, it becomes important to develop screening protocols to select compounds that are worth to be tested in vivo. This study investigated the possible use of isolated human white cells as a preliminary model to test organochalcogen toxicity. Human leucocytes were exposed to 5–50 μM of ebselen, (PhSe)2, or (PhTe)2. All compounds were cytotoxic (Trypan's Blue exclusion) at the highest concentration tested, and Ebselen was the most toxic. Ebselen and (PhSe)2 were genotoxic (Comet Assay) only at 50 μM, and (PhTe)2 at 5–50 μM. Here, the acute cytotoxicity did not correspond with in vivo toxicity of the compounds. But the genotoxicity was in the same order of the in vivo toxicity to mice. These results indicate that in vitro genotoxicity in white blood cells should be considered as an early step in the investigation of potential toxicity of organochalcogens.
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35
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Luo Z, Sheng J, Sun Y, Lu C, Yan J, Liu A, Luo HB, Huang L, Li X. Synthesis and evaluation of multi-target-directed ligands against Alzheimer's disease based on the fusion of donepezil and ebselen. J Med Chem 2013; 56:9089-99. [PMID: 24160297 DOI: 10.1021/jm401047q] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A novel series of compounds obtained by fusing the cholinesterase inhibitor donepezil and the antioxidant ebselen were designed as multi-target-directed ligands against Alzheimer's disease. An in vitro assay showed that some of these molecules did not exhibit highly potent cholinesterase inhibitory activity but did have various other ebselen-related pharmacological effects. Among the molecules, compound 7d, one of the most potent acetylcholinesterase inhibitors (IC50 values of 0.042 μM for Electrophorus electricus acetylcholinesterase and 0.097 μM for human acetylcholinesterase), was found to be a strong butyrylcholinesterase inhibitor (IC50 = 1.586 μM), to possess rapid H2O2 and peroxynitrite scavenging activity and glutathione peroxidase-like activity (ν0 = 123.5 μM min(-1)), and to be a substrate of mammalian TrxR. A toxicity test in mice showed no acute toxicity at doses of up to 2000 mg/kg. According to an in vitro blood-brain barrier model, 7d is able to penetrate the central nervous system.
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Affiliation(s)
- Zonghua Luo
- School of Pharmaceutical Sciences, Sun Yat-sen University , Guangzhou 510006, China
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36
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Giordani CFA, de Souza D, Dornelles L, Nogueira CW, Alves MP, Prigol M, Rodrigues OED. Diphenyl Diselenide-Loaded Nanocapsules: Preparation and Biological Distribution. Appl Biochem Biotechnol 2013; 172:755-66. [DOI: 10.1007/s12010-013-0554-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 09/24/2013] [Indexed: 01/06/2023]
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37
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Glaser V, Moritz B, Schmitz A, Dafré AL, Nazari EM, Rauh Müller YM, Feksa L, Straliottoa MR, de Bem AF, Farina M, da Rocha JBT, Latini A. Protective effects of diphenyl diselenide in a mouse model of brain toxicity. Chem Biol Interact 2013; 206:18-26. [DOI: 10.1016/j.cbi.2013.08.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 07/24/2013] [Accepted: 08/03/2013] [Indexed: 11/30/2022]
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38
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Kade IJ, Balogun BD, Rocha JBT. In vitro glutathione peroxidase mimicry of ebselen is linked to its oxidation of critical thiols on key cerebral suphydryl proteins - A novel component of its GPx-mimic antioxidant mechanism emerging from its thiol-modulated toxicology and pharmacology. Chem Biol Interact 2013; 206:27-36. [PMID: 23933410 DOI: 10.1016/j.cbi.2013.07.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 07/27/2013] [Accepted: 07/30/2013] [Indexed: 11/30/2022]
Abstract
The antioxidant mechanism of ebselen in rats brain is largely linked with its glutathione peroxidase (GPx) rather than its peroxiredoxin mimicry ability. However, the precise molecular dynamics between the GPx-mimicry of ebselen and thiol utilization is yet to be fully clarified and thus still open. Herein, we investigated the influence of dithiothreitol (DTT) on the antioxidant action of ebselen against oxidant-induced cerebral lipid peroxidation and deoxyribose degradation. Furthermore, the critical inhibitory concentrations of ebselen on the activities of sulphydryl enzymes such as cerebral sodium pump, δ-aminolevulinic acid dehydratase (δ-ALAD) and lactate dehydrogenase (LDH) were also investigated. We observe that ebselen (at ≥42 μM) markedly inhibited lipid peroxidation in the presence and absence of DTT, whereas it inhibited deoxyribose degradation only in the presence of DTT. Furthermore, under in vitro conditions, ebselen inhibited the thiol containing enzymes; cerebral sodium pump (at ≥40 μM), δ-ALAD (≥10 μM) and LDH (≥1 μM) which were either prevented or reversed by DTT. However, the inhibition of the activities of these sulphydryl proteins in diabetic animals was prevented by ebselen. Summarily, it is apparent that the effective in vitro inhibitory doses of ebselen on the activity of the sulphydryl proteins are far less than its antioxidant doses. In addition, the presence of DTT is evidently a critical requirement for ebselen to effect its antioxidant action against deoxyribose degeradation and not lipid peroxidation. Consequently, we conclude that ebselen possibly utilizes available thiols on sulphydryl proteins to effect its GPx mimicry antioxidant action against lipid peroxidation in rat brain homogenate.
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Affiliation(s)
- I J Kade
- Department of Biochemistry, Federal University of Technology, Akure, Ondo State, Nigeria.
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39
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de Oliveira J, Moreira ELG, Mancini G, Hort MA, Latini A, Ribeiro-do-Valle RM, Farina M, da Rocha JBT, de Bem AF. Diphenyl diselenide prevents cortico-cerebral mitochondrial dysfunction and oxidative stress induced by hypercholesterolemia in LDL receptor knockout mice. Neurochem Res 2013; 38:2028-36. [PMID: 23881289 DOI: 10.1007/s11064-013-1110-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 07/03/2013] [Accepted: 07/10/2013] [Indexed: 12/26/2022]
Abstract
Recent studies have indicated a causal link between high dietary cholesterol intake and brain oxidative stress. In particular, we have previously shown a positive correlation between elevated plasma cholesterol levels, cortico-cerebral oxidative stress and mitochondrial dysfunction in low density lipoprotein receptor knockout (LDLr(-/-)) mice, a mouse model of familial hypercholesterolemia. Here we show that the organoselenium compound diphenyl diselenide (PhSe)2 (1 mg/kg; o.g., once a day for 30 days) significantly blunted the cortico-cerebral oxidative stress and mitochondrial dysfunction induced by a hypercholesterolemic diet in LDLr(-/-) mice. (PhSe)2 effectively prevented the inhibition of complex I and II activities, significantly increased the reduced glutathione (GSH) content and reduced lipoperoxidation in the cerebral cortex of hypercholesterolemic LDLr(-/-) mice. Overall, (PhSe)2 may be a promising molecule to protect against hypercholesterolemia-induced effects on the central nervous system, in addition to its already demonstrated antiatherogenic effects.
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Affiliation(s)
- Jade de Oliveira
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
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Protective effect of diphenyl diselenide against peroxynitrite-mediated endothelial cell death: A comparison with ebselen. Nitric Oxide 2013; 31:20-30. [DOI: 10.1016/j.niox.2013.03.003] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 03/11/2013] [Indexed: 02/07/2023]
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41
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Straliotto MR, de Oliveira J, Mancini G, Bainy AC, Latini A, Deobald AM, Rocha JB, de Bem AF. Disubstituted diaryl diselenides as potential atheroprotective compounds: Involvement of TrxR and GPx-like systems. Eur J Pharm Sci 2013; 48:717-25. [DOI: 10.1016/j.ejps.2013.01.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 01/03/2013] [Indexed: 02/08/2023]
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42
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Puntel RL, Roos DH, Seeger RL, Rocha JB. Mitochondrial electron transfer chain complexes inhibition by different organochalcogens. Toxicol In Vitro 2013; 27:59-70. [DOI: 10.1016/j.tiv.2012.10.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 10/12/2012] [Accepted: 10/13/2012] [Indexed: 01/17/2023]
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43
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Puntel RL, Roos DH, Seeger RL, Aschner M, Rocha JBT. Organochalcogens inhibit mitochondrial complexes I and II in rat brain: possible implications for neurotoxicity. Neurotox Res 2012; 24:109-18. [PMID: 23224748 DOI: 10.1007/s12640-012-9365-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 11/20/2012] [Accepted: 11/21/2012] [Indexed: 12/31/2022]
Abstract
Organochalcogens, such as organoselenium and organotellurium compounds, can be neurotoxic to rodents. Since mitochondrial dysfunction plays a pivotal role in neurological disorders, the present study was designed to test the hypothesis that rat brain mitochondrial complexes (I, II, I-III, II-III and IV) could be molecular targets of organochalcogens. The results show that organochalcogens caused statistically significant inhibition of mitochondrial complex I activity, which was prevented by preincubation with NADH and fully blunted by reduced glutathione (GSH). Mitochondrial complex II activity remained unchanged in response to (PhSe)₂ treatment. Ebs and (PhTe)₂ caused a significant concentration-dependent inhibition of complex II that was also blunted by GSH. Mitochondrial complex IV activity was not modified by organochalcogens. Collectively, Ebs, (PhSe)₂ and (PhTe)₂ were more effective inhibitors of brain mitochondrial complex I than of complex II, whereas they did not affect complex IV. These observations are consistent with organochalcogens inducing mitochondrial complex I and II inhibition via their thiol-oxidase-like activity, with Ebs, (PhSe)₂ and (PhTe)₂ effectively oxidising critical thiol groups of these complexes.
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Affiliation(s)
- Robson Luiz Puntel
- Universidade Federal do Pampa, Campus Uruguaiana BR-472 Km 7, Uruguaiana, RS 97500-970, Brazil.
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44
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Diphenyl diselenide prevents methylmercury-induced mitochondrial dysfunction in rat liver slices. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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45
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Ibrahim M, Hassan W, Meinerz DF, dos Santos M, V. Klimaczewski C, M. Deobald A, Costa MS, Nogueira CW, Barbosa NBV, Rocha JBT. Antioxidant properties of diorganoyl diselenides and ditellurides: modulation by organic aryl or naphthyl moiety. Mol Cell Biochem 2012; 371:97-104. [DOI: 10.1007/s11010-012-1426-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 08/03/2012] [Indexed: 01/22/2023]
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46
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Sabir SM, Salman SM, Rocha JBT. Antioxidant properties of β-seleno amines against lipid peroxidation in rat brain and liver. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 34:446-453. [PMID: 22797322 DOI: 10.1016/j.etap.2012.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 06/13/2012] [Accepted: 06/16/2012] [Indexed: 06/01/2023]
Abstract
β-Seleno amines were screened for in vitro antioxidant activity. The compounds (C1-C4) were tested against lipid peroxidation induced by iron and sodium nitroprusside in rat brain and liver homogenates. The compounds showed inhibition against thiobarbituric acid reactive species (TBARS) induced by different pro-oxidants (10μM FeSO(4) and 5μM sodium nitroprusside (SNP) in rat brain and liver homogenates. The compounds exhibited strong antioxidant activity in 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and phosphomolybdenum assays. The IC(50) values revealed that the β-seleno amines in which the amino group was protected with protecting groups tert-butyloxycarbonyl (Boc) and Tosyl (Ts) groups showed better antioxidant profiles compared to the free monoselenides. The total antioxidant activity of C1, C2, C3 and C4 were found to be 85.2±11.5, 114±7.9, 138±8.5, 125.81±5.2μM/ml of ascorbic acid respectively. Therefore, these compounds may be used as synthetic antioxidants.
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Affiliation(s)
- S M Sabir
- Department of Eastern Medicine and Surgery, University of the Pooch Rawalakot Azad Kashmir Pakistan.
| | - Syed M Salman
- Department of Chemistry, Abdul Wali Khan University Mardan, Khyber pakhtunkhwa, Pakistan
| | - J B T Rocha
- Departmento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, CEP 97105-900, Brazil
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Mercury toxicity on sodium pump and organoseleniums intervention: a paradox. J Biomed Biotechnol 2012; 2012:924549. [PMID: 22927724 PMCID: PMC3425867 DOI: 10.1155/2012/924549] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 07/01/2012] [Indexed: 12/21/2022] Open
Abstract
Mercury is an environmental poison, and the damage to living system is generally severe. The severity of mercury poisoning is consequent from the fact that it targets the thiol-containing enzymes, irreversibly oxidizing their critical thiol groups, consequently leading to an inactivation of the enzyme. The Na+/K+-ATPase is a sulfhydryl protein that is sensitive to Hg2+ assault. On the other hand, organoseleniums are a class of pharmacologically promising compounds with potent antioxidant effects. While Hg2+ oxidizes sulfhydryl groups of Na+/K+-ATPase under in vitro and in vivo conditions, the organoselenium compounds inhibit Na+/K+-ATPase in vitro but enhance its activities under in vivo conditions with concomitant increase in the level of endogenous thiols. Paradoxically, it appears that these two thiol oxidants can be used to counteract one another under in vivo conditions, and this hypothesis serves as the basis for this paper.
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48
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Role of calcium and mitochondria in MeHg-mediated cytotoxicity. J Biomed Biotechnol 2012; 2012:248764. [PMID: 22927718 PMCID: PMC3425894 DOI: 10.1155/2012/248764] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 06/12/2012] [Accepted: 06/14/2012] [Indexed: 11/17/2022] Open
Abstract
Methylmercury (MeHg) mediated cytotoxicity is associated with loss of intracellular calcium (Ca2+) homeostasis. The imbalance in Ca2+ physiology is believed to be associated with dysregulation of Ca2+ intracellular stores and/or increased permeability of the biomembranes to this ion. In this paper we summarize the contribution of glutamate dyshomeostasis in intracellular Ca2+ overload and highlight the mitochondrial dysfunctions induced by MeHg via Ca2+ overload. Mitochondrial disturbances elicited by Ca2+ may involve several molecular events (i.e., alterations in the activity of the mitochondrial electron transport chain complexes, mitochondrial proton gradient dissipation, mitochondrial permeability transition pore (MPTP) opening, thiol depletion, failure of energy metabolism, reactive oxygen species overproduction) that could culminate in cell death. Here we will focus on the role of oxidative stress in these phenomena. Additionally, possible antioxidant therapies that could be effective in the treatment of MeHg intoxication are briefly discussed.
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de Souza Prestes A, Stefanello ST, Salman SM, Pazini AM, Schwab RS, Braga AL, de Vargas Barbosa NB, Rocha JBT. Antioxidant activity of β-selenoamines and their capacity to mimic different enzymes. Mol Cell Biochem 2012; 365:85-92. [PMID: 22311601 DOI: 10.1007/s11010-012-1246-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 01/14/2012] [Indexed: 11/25/2022]
Abstract
The antioxidant properties of organoselenium compounds have been extensively investigated because oxidative stress is a hallmark of a variety of chronic human diseases. Here, we reported the influence of substituent groups in the antioxidant activity of β-selenoamines. We have investigated whether they exhibited glutathione peroxidase-like (GPx-like) activity and whether they could be substrate of thioredoxin reductase (TrxR). In the DPPH assay, the β-selenium amines did not exhibit antioxidant activity. However, the β-selenium amines with p-methoxy and tosyl groups prevented the lipid peroxidation. The β-selenium amine compound with p-methoxy substituent group exhibited thiol-peroxidase-like activity (GPx-like activity) and was reduced by the hepatic TrxR. These results contribute to understand the influence of structural alteration of non-conventional selenium compounds as synthetic mimetic of antioxidant enzymes of mammalian organisms.
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Affiliation(s)
- Alessandro de Souza Prestes
- Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS CEP 97105-900, Brazil
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50
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Diphenyl diselenide diet intake improves spatial learning and memory deficits in hypothyroid female rats. Int J Dev Neurosci 2012; 30:83-9. [DOI: 10.1016/j.ijdevneu.2011.12.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2011] [Revised: 12/16/2011] [Accepted: 12/26/2011] [Indexed: 12/22/2022] Open
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