Marcelo Raul Vargas

Title
InstitutionMedical University of South Carolina
DepartmentCell and Molecular Pharmacology and Experimental Therapeutics
AddressP.O. Box MSC 509
BSB 319A
Basic Science Building - 173 Ashley Ave.
Phone843-792-1689
Fax843-792-2475
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Killoy KM, Harlan BA, Pehar M, Vargas MR. NR1D1 downregulation in astrocytes induces a phenotype that is detrimental to cocultured motor neurons. FASEB J. 2022 04; 36(4):e22262. PMID: 35319791.
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    2. Killoy KM, Pehar M, Harlan BA, Vargas MR. Altered expression of clock and clock-controlled genes in a hSOD1-linked amyotrophic lateral sclerosis mouse model. FASEB J. 2021 02; 35(2):e21343. PMID: 33508151.
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    3. Liu L, Killoy KM, Vargas MR, Yamamoto Y, Pehar M. Effects of RAGE inhibition on the progression of the disease in hSOD1G93A ALS mice. Pharmacol Res Perspect. 2020 08; 8(4):e00636. PMID: 32776498.
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    4. Killoy KM, Harlan BA, Pehar M, Vargas MR. FABP7 upregulation induces a neurotoxic phenotype in astrocytes. Glia. 2020 12; 68(12):2693-2704. PMID: 32619303.
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    5. Harlan BA, Killoy KM, Pehar M, Liu L, Auwerx J, Vargas MR. Evaluation of the NAD+ biosynthetic pathway in ALS patients and effect of modulating NAD+ levels in hSOD1-linked ALS mouse models. Exp Neurol. 2020 05; 327:113219. PMID: 32014438.
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    6. Harlan BA, Pehar M, Killoy KM, Vargas MR. Enhanced SIRT6 activity abrogates the neurotoxic phenotype of astrocytes expressing ALS-linked mutant SOD1. FASEB J. 2019 06; 33(6):7084-7091. PMID: 30841754.
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    7. Franco R, Vargas MR. Redox Biology in Neurological Function, Dysfunction, and Aging. Antioxid Redox Signal. 2018 06 20; 28(18):1583-1586. PMID: 29634346.
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    8. Killoy KM, Harlan BA, Pehar M, Helke KL, Johnson JA, Vargas MR. Decreased glutathione levels cause overt motor neuron degeneration in hSOD1WT over-expressing mice. Exp Neurol. 2018 04; 302:129-135. PMID: 29307609.
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    9. Pehar M, Harlan BA, Killoy KM, Vargas MR. Nicotinamide Adenine Dinucleotide Metabolism and Neurodegeneration. Antioxid Redox Signal. 2018 06 20; 28(18):1652-1668. PMID: 28548540.
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    10. Kim MJ, Vargas MR, Harlan BA, Killoy KM, Ball LE, Comte-Walters S, Gooz M, Yamamoto Y, Beckman JS, Barbeito L, Pehar M. Nitration and Glycation Turn Mature NGF into a Toxic Factor for Motor Neurons: A Role for p75NTR and RAGE Signaling in ALS. Antioxid Redox Signal. 2018 06 20; 28(18):1587-1602. PMID: 28537420.
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    11. Pehar M, Harlan BA, Killoy KM, Vargas MR. Role and Therapeutic Potential of Astrocytes in Amyotrophic Lateral Sclerosis. Curr Pharm Des. 2017; 23(33):5010-5021. PMID: 28641533.
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    12. Diaz-Amarilla P, Miquel E, Trostchansky A, Trias E, Ferreira AM, Freeman BA, Cassina P, Barbeito L, Vargas MR, Rubbo H. Electrophilic nitro-fatty acids prevent astrocyte-mediated toxicity to motor neurons in a cell model of familial amyotrophic lateral sclerosis via nuclear factor erythroid 2-related factor activation. Free Radic Biol Med. 2016 06; 95:112-20. PMID: 27012417.
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    13. Harlan BA, Pehar M, Sharma DR, Beeson G, Beeson CC, Vargas MR. Enhancing NAD+ Salvage Pathway Reverts the Toxicity of Primary Astrocytes Expressing Amyotrophic Lateral Sclerosis-linked Mutant Superoxide Dismutase 1 (SOD1). J Biol Chem. 2016 May 13; 291(20):10836-46. PMID: 27002158.
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    14. Pehar M, Ball LE, Sharma DR, Harlan BA, Comte-Walters S, Neely BA, Vargas MR. Changes in Protein Expression and Lysine Acetylation Induced by Decreased Glutathione Levels in Astrocytes. Mol Cell Proteomics. 2016 Feb; 15(2):493-505. PMID: 26486419.
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    15. Pehar M, Beeson G, Beeson CC, Johnson JA, Vargas MR. Mitochondria-targeted catalase reverts the neurotoxicity of hSOD1G?³A astrocytes without extending the survival of ALS-linked mutant hSOD1 mice. PLoS One. 2014; 9(7):e103438. PMID: 25054289.
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    16. Vargas MR, Burton NC, Kutzke J, Gan L, Johnson DA, Schäfer M, Werner S, Johnson JA. Absence of Nrf2 or its selective overexpression in neurons and muscle does not affect survival in ALS-linked mutant hSOD1 mouse models. PLoS One. 2013; 8(2):e56625. PMID: 23418589.
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    17. Gan L, Vargas MR, Johnson DA, Johnson JA. Astrocyte-specific overexpression of Nrf2 delays motor pathology and synuclein aggregation throughout the CNS in the alpha-synuclein mutant (A53T) mouse model. J Neurosci. 2012 Dec 05; 32(49):17775-87. PMID: 23223297.
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    18. Viera L, Radmilovich M, Vargas MR, Dennys CN, Wilson L, Barnes S, Franco MC, Beckman JS, Estévez AG. Temporal patterns of tyrosine nitration in embryo heart development. Free Radic Biol Med. 2013 Feb; 55:101-8. PMID: 23195686.
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    19. Vargas MR, Johnson DA, Johnson JA. Decreased glutathione accelerates neurological deficit and mitochondrial pathology in familial ALS-linked hSOD1(G93A) mice model. Neurobiol Dis. 2011 Sep; 43(3):543-51. PMID: 21600285.
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    20. Vargas MR, Johnson JA. Astrogliosis in amyotrophic lateral sclerosis: role and therapeutic potential of astrocytes. Neurotherapeutics. 2010 Oct; 7(4):471-81. PMID: 20880509.
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    21. Calkins MJ, Vargas MR, Johnson DA, Johnson JA. Astrocyte-specific overexpression of Nrf2 protects striatal neurons from mitochondrial complex II inhibition. Toxicol Sci. 2010 Jun; 115(2):557-68. PMID: 20211941.
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    22. Barbeito AG, Martinez-Palma L, Vargas MR, Pehar M, Mañay N, Beckman JS, Barbeito L, Cassina P. Lead exposure stimulates VEGF expression in the spinal cord and extends survival in a mouse model of ALS. Neurobiol Dis. 2010 Mar; 37(3):574-80. PMID: 19914377.
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    23. Vargas MR, Johnson JA. The Nrf2-ARE cytoprotective pathway in astrocytes. Expert Rev Mol Med. 2009 Jun 03; 11:e17. PMID: 19490732.
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    24. Calkins MJ, Johnson DA, Townsend JA, Vargas MR, Dowell JA, Williamson TP, Kraft AD, Lee JM, Li J, Johnson JA. The Nrf2/ARE pathway as a potential therapeutic target in neurodegenerative disease. Antioxid Redox Signal. 2009 Mar; 11(3):497-508. PMID: 18717629.
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    25. Chen PC, Vargas MR, Pani AK, Smeyne RJ, Johnson DA, Kan YW, Johnson JA. Nrf2-mediated neuroprotection in the MPTP mouse model of Parkinson's disease: Critical role for the astrocyte. Proc Natl Acad Sci U S A. 2009 Feb 24; 106(8):2933-8. PMID: 19196989.
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    26. Vargas MR, Johnson DA, Sirkis DW, Messing A, Johnson JA. Nrf2 activation in astrocytes protects against neurodegeneration in mouse models of familial amyotrophic lateral sclerosis. J Neurosci. 2008 Dec 10; 28(50):13574-81. PMID: 19074031.
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    27. Johnson JA, Johnson DA, Kraft AD, Calkins MJ, Jakel RJ, Vargas MR, Chen PC. The Nrf2-ARE pathway: an indicator and modulator of oxidative stress in neurodegeneration. Ann N Y Acad Sci. 2008 Dec; 1147:61-9. PMID: 19076431.
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    28. Vargas MR, Pehar M, Díaz-Amarilla PJ, Beckman JS, Barbeito L. Transcriptional profile of primary astrocytes expressing ALS-linked mutant SOD1. J Neurosci Res. 2008 Dec; 86(16):3515-25. PMID: 18683239.
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    29. Pehar M, Vargas MR, Robinson KM, Cassina P, Díaz-Amarilla PJ, Hagen TM, Radi R, Barbeito L, Beckman JS. Mitochondrial superoxide production and nuclear factor erythroid 2-related factor 2 activation in p75 neurotrophin receptor-induced motor neuron apoptosis. J Neurosci. 2007 Jul 18; 27(29):7777-85. PMID: 17634371.
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    30. Sáez ET, Pehar M, Vargas MR, Barbeito L, Maccioni RB. Production of nerve growth factor by beta-amyloid-stimulated astrocytes induces p75NTR-dependent tau hyperphosphorylation in cultured hippocampal neurons. J Neurosci Res. 2006 Oct; 84(5):1098-106. PMID: 16862561.
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    31. Pehar M, Cassina P, Vargas MR, Xie Y, Beckman JS, Massa SM, Longo FM, Barbeito L. Modulation of p75-dependent motor neuron death by a small non-peptidyl mimetic of the neurotrophin loop 1 domain. Eur J Neurosci. 2006 Sep; 24(6):1575-80. PMID: 17004921.
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    32. Pehar M, Vargas MR, Robinson KM, Cassina P, England P, Beckman JS, Alzari PM, Barbeito L. Peroxynitrite transforms nerve growth factor into an apoptotic factor for motor neurons. Free Radic Biol Med. 2006 Dec 01; 41(11):1632-44. PMID: 17145551.
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    33. Vargas MR, Pehar M, Cassina P, Beckman JS, Barbeito L. Increased glutathione biosynthesis by Nrf2 activation in astrocytes prevents p75NTR-dependent motor neuron apoptosis. J Neurochem. 2006 May; 97(3):687-96. PMID: 16524372.
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    34. Vargas MR, Pehar M, Cassina P, Martínez-Palma L, Thompson JA, Beckman JS, Barbeito L. Fibroblast growth factor-1 induces heme oxygenase-1 via nuclear factor erythroid 2-related factor 2 (Nrf2) in spinal cord astrocytes: consequences for motor neuron survival. J Biol Chem. 2005 Jul 08; 280(27):25571-9. PMID: 15870071.
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    35. Cassina P, Pehar M, Vargas MR, Castellanos R, Barbeito AG, Estévez AG, Thompson JA, Beckman JS, Barbeito L. Astrocyte activation by fibroblast growth factor-1 and motor neuron apoptosis: implications for amyotrophic lateral sclerosis. J Neurochem. 2005 Apr; 93(1):38-46. PMID: 15773903.
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    36. Pehar M, Vargas MR, Cassina P, Barbeito AG, Beckman JS, Barbeito L. Complexity of astrocyte-motor neuron interactions in amyotrophic lateral sclerosis. Neurodegener Dis. 2005; 2(3-4):139-46. PMID: 16909019.
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    37. Barbeito LH, Pehar M, Cassina P, Vargas MR, Peluffo H, Viera L, Estévez AG, Beckman JS. A role for astrocytes in motor neuron loss in amyotrophic lateral sclerosis. Brain Res Brain Res Rev. 2004 Dec; 47(1-3):263-74. PMID: 15572176.
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    38. Vargas MR, Pehar M, Cassina P, Estévez AG, Beckman JS, Barbeito L. Stimulation of nerve growth factor expression in astrocytes by peroxynitrite. In Vivo. 2004 May-Jun; 18(3):269-74. PMID: 15341182.
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    39. Orr RK, Hoehn JL, Col NF. The learning curve for sentinel node biopsy in breast cancer: practical considerations. Arch Surg. 1999 Jul; 134(7):764-7. PMID: 15056289.
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