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Alhowail AH, Eggert M, Bloemer J, Pinky PD, Woodie L, Bhattacharya S, Bhattacharya D, Buabeid MA, Smith B, Dhanasekaran M, Piazza G, Reed MN, Escobar M, Arnold RD, Suppiramaniam V. Phenyl-2-aminoethyl selenide ameliorates hippocampal long-term potentiation and cognitive deficits following doxorubicin treatment. PLoS One 2023; 18:e0294280. [PMID: 37948406 PMCID: PMC10637675 DOI: 10.1371/journal.pone.0294280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/30/2023] [Indexed: 11/12/2023] Open
Abstract
Chemotherapy-induced memory loss ("chemobrain") can occur following treatment with the widely used chemotherapeutic agent doxorubicin (DOX). However, the mechanisms through which DOX induces cognitive dysfunction are not clear, and there are no commercially available therapies for its treatment or prevention. Therefore, the aim of this study was to determine the therapeutic potential of phenyl-2-aminoethyl selenide (PAESe), an antioxidant drug previously demonstrated to reduce cardiotoxicity associated with DOX treatment, against DOX-induced chemobrain. Four groups of male athymic NCr nude (nu/nu) mice received five weekly tail-vein injections of saline (Control group), 5 mg/kg of DOX (DOX group), 10 mg/kg PAESe (PAESe group), or 5 mg/kg DOX and 10 mg/kg PAESe (DOX+PAESe group). Spatial memory was evaluated using Y-maze and novel object location tasks, while synaptic plasticity was assessed through the measurement of field excitatory postsynaptic potentials from the Schaffer collateral circuit. Western blot analyses were performed to assess hippocampal protein and phosphorylation levels. In this model, DOX impaired synaptic plasticity and memory, and increased phosphorylation of protein kinase B (Akt) and extracellular-regulated kinase (ERK). Co-administration of PAESe reduced Akt and ERK phosphorylation and ameliorated the synaptic and memory deficits associated with DOX treatment.
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Affiliation(s)
- Ahmad H. Alhowail
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, Buraydah, Kingdom of Saudi Arabia
| | - Matthew Eggert
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Jenna Bloemer
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Priyanka D. Pinky
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Lauren Woodie
- Department of Nutrition, Dietetics and Hospitality Management, College of Human Sciences, Auburn University, Auburn, AL, United States of America
| | - Subhrajit Bhattacharya
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Dwipayan Bhattacharya
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Manal A. Buabeid
- College of Pharmacy and Health Sciences, Ajman University, Ajman, UAE
| | - Bruce Smith
- Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, United States of America
| | - Muralikrishnan Dhanasekaran
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
- Center for Neuroscience Initiative, Auburn University, Auburn, AL, United States of America
| | - Gary Piazza
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
| | - Miranda N. Reed
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
- Center for Neuroscience Initiative, Auburn University, Auburn, AL, United States of America
| | - Martha Escobar
- Department of Psychology, Oakland University, Rochester, MI, United States of America
| | - Robert D. Arnold
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
- Center for Neuroscience Initiative, Auburn University, Auburn, AL, United States of America
| | - Vishnu Suppiramaniam
- Department of Drug Discovery and Development, Auburn University, Auburn, AL, United States of America
- Center for Neuroscience Initiative, Auburn University, Auburn, AL, United States of America
- Department of Molecular and Cellular Biology, College of Science and Mathematics, Kennesaw State University, Kennesaw, Georgia
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Cowan EA, Taylor JL, Oldham CD, Dasari M, Doyle D, Murthy N, May SW. Cellular antioxidant activity of phenylaminoethyl selenides as monitored by chemiluminescence of peroxalate nanoparticles and by reduction of lipopolysaccharide-induced oxidative stress. Enzyme Microb Technol 2013; 53:373-7. [DOI: 10.1016/j.enzmictec.2013.08.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 08/09/2013] [Indexed: 01/23/2023]
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The antioxidant phenylaminoethyl selenide reduces doxorubicin-induced cardiotoxicity in a xenograft model of human prostate cancer. Arch Biochem Biophys 2011; 515:112-9. [PMID: 21906582 DOI: 10.1016/j.abb.2011.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/05/2011] [Accepted: 08/23/2011] [Indexed: 12/21/2022]
Abstract
Anthracyclines are potent anticancer agents, but cardiotoxicity mediated by free radical generation limits their clinical use. This study evaluated the anticancer activity of phenyl-2-aminoethyl selenide (PAESe) and its potential to reduce doxorubicin (DOX)-induced cardiotoxicity. Growth inhibitory effects of PAESe with DOX, and vincristine, clinically used anticancer agents, and tert-butylhydroperoxide (TBHP), a known oxidant, on the growth of human prostate carcinoma (PC-3) cells was determined. PAESe (≤1μm) did not alter the growth of PC-3 cells, however, concomitant use of PAESe decreased the oxidative-mediated cytotoxicity of TBHP, but had limited effect on vincristine or DOX activity. Further, PAESe decreased the formation of intracellular reactive oxygen species from TBHP and DOX. The effect of PAESe on the activity of DOX was determined using a tumor (PC-3) xenograft model in mice. PAESe did not alter DOX antitumor activity and showed evidence of direct antitumor activity relative to controls. DOX treatment decreased mice body weight significantly, whereas concomitant administration of PAESe and DOX was similar to controls. Most importantly, PAESe decreased DOX-mediated infiltration of neutrophil and macrophages into the myocardium. These data suggest PAESe had in vivo antitumor activity and in combination with DOX decreased early signs of cardiotoxicity while preserving its antitumor activity.
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Ayaz M, Ozdemir S, Yaras N, Vassort G, Turan B. Selenium-induced alterations in ionic currents of rat cardiomyocytes. Biochem Biophys Res Commun 2005; 327:163-73. [PMID: 15629445 DOI: 10.1016/j.bbrc.2004.12.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2004] [Indexed: 11/16/2022]
Abstract
In the present study, rats were treated with sodium selenite (5 micromol/kg body weight/day, ip) for 4 weeks and the parameters of contractile activity, action potential, L-type Ca2+-current (ICaL), as well as transient outward (Ito), inward rectifier (IK1), and steady state (Iss) K+-currents were investigated. Sodium selenite treatment increased rat blood glucose level and lowered plasma insulin level, significantly. This treatment also caused slightly prolongation in action potential with no significant effects on spontaneous contraction parameters and intracellular Ca2+ transients of the heart preparations. These effects were associated with marked alterations in the kinetics of both ICaL and Ito including a significant slowing in both inactivation time constants of ICaL and a significant shift to negative potential at half-inactivation of these channels without any change in the current density. Also, there was a significantly faster inactivation of Ito and no shift in half-inactivation of this channel without any change in its current density. Consequently, there was a approximately 50% increase in total charges carried by Ca2+ current and approximately 50% decrease in total charges carried by K+ currents of the treated rat cardiomyocytes. Additionally we observed a significant inhibition in IK1 density in treated rat cardiomyocytes. Oxidized glutathione level was significantly increased (70%) while the observed decrease in reduced glutathione was much less. Since a shift in redox state of regulatory proteins is related with cell dysfunction, selenium-induced increase in blood glucose and decrease in plasma insulin may correlate these alterations. These alterations, in the kinetics of the channels and in IK1 density, might lead to proarrhythmic effect of chronic selenium supplementation.
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Affiliation(s)
- Murat Ayaz
- Department of Biophysics, School of Medicine, Ankara University, 06100 Ankara, Turkey
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Yaras N, Turan B. Interpretation of relevance of sodium?calcium exchange in action potential of diabetic rat heart by mathematical model. Mol Cell Biochem 2005; 269:121-9. [PMID: 15786724 DOI: 10.1007/s11010-005-3439-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sarcolemmal Na+-Ca2+ exchange plays a central role in ion transport of the myocardium and the current carried with it contributes to the late phase of the action potential (AP) besides the contribution of outward K+-currents. In this study, the mathematical model for AP of the diabetic rat ventricular myocytes [34] was modified and used for the diabetic rat papillary muscle. We used our experimentally measured values of two K+-currents; transient outward current, Ito and steady-state outward current, Iss, as well as L-type Ca2+-current, I(CaL), then compared with the simulated values. We have demonstrated that the prolongation in the AP of the papillary muscle of the diabetic rats are not due to the alteration of I(CaL) but mainly due to the inhibition of the K+-currents and also the Na+-Ca2+ exchanger current, I(Na-Ca). In combination with our experimental data on sodium-selenite-treated diabetic rats, our simulation results provide new information concerning plausible ionic mechanisms, and second a possible positive effect of selenium treatment on the altered I(Na-Ca) for the observed changes in the AP duration of streptozotocin-induced diabetic rat heart.
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Affiliation(s)
- Nazmi Yaras
- Department of Biophysics, School of Medicine, Ankara University, Ankara, Turkey
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Abstract
The biochemistry and pharmacology of selenium is a subject of intense current interest, particularly from the viewpoint of public health. Selenium, long recognised as a dietary antioxidant, is now known to be an essential component of the active sites of several enzymes, including glutathione peroxidase and thioredoxin reductase, which catalyse reactions essential to the protection of cellular components against oxidative and free radical damage. A low concentration of selenium in plasma has been identified as a risk factor for several diseases, including cancer, cardiovascular disease, osteoarthritis and AIDS, and several large-scale selenium supplementation human trials are now underway. Evidence is emerging that, at least in the case of cancer, the antitumorigenic effect of selenium supplementation arises at least in part from enhanced production of specific selenium-containing metabolites, not just from maximal expression of selenoenzymes. Therefore a number of novel pharmaceutical agents which are selenium-based or which target specific aspects of selenium metabolism are under development. Among these are orally-active antihypertensive agents, anticancer, antiviral, immunosuppressive and antimicrobial agents, and organoselenium compounds which reduce oxidative tissue damage and edema. It can be anticipated that as our understanding of the basic biology and biochemistry of selenium increases, the coming years will bring further development of new selenium-based pharmaceutical agents with therapeutic potential toward a variety of human diseases.
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Affiliation(s)
- Sheldon W May
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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