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Clostridium perfringens epsilon toxin induces blood brain barrier permeability via caveolae-dependent transcytosis and requires expression of MAL.

Linden JR, Flores C, Schmidt EF, Uzal FA, Michel AO, Valenzuela M, Dobrow S, Vartanian T.

PLoS Pathog. 2019 Nov 8;15(11):e1008014. doi: 10.1371/journal.ppat.1008014. eCollection 2019 Nov.


Black African and Latino/a identity correlates with increased plasmablasts in MS.

Telesford KM, Kaunzner UW, Perumal J, Gauthier SA, Wu X, Diaz I, Kruse-Hoyer M, Engel C, Marcille M, Vartanian T.

Neurol Neuroimmunol Neuroinflamm. 2019 Oct 31;7(1). pii: e634. doi: 10.1212/NXI.0000000000000634. Print 2020 Jan.


A Novel Panel of Rabbit Monoclonal Antibodies and Their Diverse Applications Including Inhibition of Clostridium perfringens Epsilon Toxin Oligomerization.

Linden JR, Telesford K, Shetty S, Winokour P, Haigh S, Cahir-McFarland E, Antognetti G, Datta A, Wang T, Meier W, Vartanian T.

Antibodies (Basel). 2018 Oct 25;7(4). pii: E37. doi: 10.3390/antib7040037.


"Highlighting" red nuclei by atypical posterior reversible encephalopathy syndrome in a patient with systemic lupus erythematosus.

Vaysman T, Xu P, Vartanian T, Michalak P, Pike K, Liu A.

Clin Case Rep. 2019 Jun 13;7(7):1404-1408. doi: 10.1002/ccr3.2245. eCollection 2019 Jul.


Clostridium perfringens Epsilon Toxin Compromises the Blood-Brain Barrier in a Humanized Zebrafish Model.

Adler D, Linden JR, Shetty SV, Ma Y, Bokori-Brown M, Titball RW, Vartanian T.

iScience. 2019 May 31;15:39-54. doi: 10.1016/j.isci.2019.04.016. Epub 2019 Apr 11.


Recurrent Caterpillar-like Arachnoid Cysts Following Initial Resection: A Unique Presentation of a Disorder Where the Limits of Modern Medicine Are Reached.

Kaloostian SW, Vartanian TK, Ordookhanian C, Vartanian T, Kaloostian PE.

Cureus. 2019 Jan 23;11(1):e3946. doi: 10.7759/cureus.3946.


Concomittant fibrous dysplasia with aneurysmal bone cyst formation within the skull, humerus and rib.

Kaloostian SW, Vartanian TK, Ordookhanian C, Vartanian T, Kaloostian PE.

J Surg Case Rep. 2018 Jul 21;2018(7):rjy180. doi: 10.1093/jscr/rjy180. eCollection 2018 Jul.


Induction of disease remission with one cycle of alemtuzumab in relapsing-remitting MS.

Kocsik AS, Klein DE, Liedke M, Kaunzner UW, Nealon NM, Gauthier SA, Vartanian T, Perumal JS.

J Neurol. 2018 May;265(5):1226-1229. doi: 10.1007/s00415-018-8845-4. Epub 2018 Apr 17.


Thrombocytopenia at the time of alemtuzumab infusion in relapsing-remitting multiple sclerosis.

Ranganathan U, Kaunzner U, Foster S, Vartanian T, Perumal JS.

Mult Scler. 2018 Apr;24(4):553-554. doi: 10.1177/1352458517719152. Epub 2017 Jun 29. No abstract available.


Reduction of PK11195 uptake observed in multiple sclerosis lesions after natalizumab initiation.

Kaunzner UW, Kang Y, Monohan E, Kothari PJ, Nealon N, Perumal J, Vartanian T, Kuceyeski A, Vallabhajosula S, Mozley PD, Riley CS, Newman SM, Gauthier SA.

Mult Scler Relat Disord. 2017 Jul;15:27-33. doi: 10.1016/j.msard.2017.04.008. Epub 2017 Apr 29.


MRI Analysis of White Matter Myelin Water Content in Multiple Sclerosis: A Novel Approach Applied to Finding Correlates of Cortical Thinning.

Dayan M, Hurtado Rúa SM, Monohan E, Fujimoto K, Pandya S, LoCastro EM, Vartanian T, Nguyen TD, Raj A, Gauthier SA.

Front Neurosci. 2017 May 26;11:284. doi: 10.3389/fnins.2017.00284. eCollection 2017.


Immediate transient thrombocytopenia at the time of alemtuzumab infusion in multiple sclerosis.

Ranganathan U, Kaunzner U, Foster S, Vartanian T, Perumal JS.

Mult Scler. 2018 Apr;24(4):540-542. doi: 10.1177/1352458517699876. Epub 2017 Mar 13.


Oral Multiple Sclerosis Drugs Inhibit the In vitro Growth of Epsilon Toxin Producing Gut Bacterium, Clostridium perfringens.

Rumah KR, Vartanian TK, Fischetti VA.

Front Cell Infect Microbiol. 2017 Jan 25;7:11. doi: 10.3389/fcimb.2017.00011. eCollection 2017.


Differential Impact of Multiple Sclerosis on Cortical and Deep Gray Matter Structures in African Americans and Caucasian Americans.

Al-Kawaz M, Monohan E, Morris E, Perumal JS, Nealon N, Vartanian T, Gauthier SA.

J Neuroimaging. 2017 May;27(3):333-338. doi: 10.1111/jon.12393. Epub 2016 Sep 16.


A study of patients with aggressive multiple sclerosis at disease onset.

Kaunzner UW, Kumar G, Askin G, Gauthier SA, Nealon NN, Vartanian T, Perumal JS.

Neuropsychiatr Dis Treat. 2016 Aug 1;12:1907-12. doi: 10.2147/NDT.S111885. eCollection 2016.


Relapses in multiple sclerosis: Relationship to disability.

Goodin DS, Reder AT, Bermel RA, Cutter GR, Fox RJ, John GR, Lublin FD, Lucchinetti CF, Miller AE, Pelletier D, Racke MK, Trapp BD, Vartanian T, Waubant E.

Mult Scler Relat Disord. 2016 Mar;6:10-20. doi: 10.1016/j.msard.2015.09.002. Epub 2015 Sep 8. Review.


Measuring longitudinal myelin water fraction in new multiple sclerosis lesions.

Vargas WS, Monohan E, Pandya S, Raj A, Vartanian T, Nguyen TD, Hurtado Rúa SM, Gauthier SA.

Neuroimage Clin. 2015 Sep 12;9:369-75. doi: 10.1016/j.nicl.2015.09.003. eCollection 2015.


Clostridium perfringens Epsilon Toxin Causes Selective Death of Mature Oligodendrocytes and Central Nervous System Demyelination.

Linden JR, Ma Y, Zhao B, Harris JM, Rumah KR, Schaeren-Wiemers N, Vartanian T.

mBio. 2015 Jun 16;6(3):e02513. doi: 10.1128/mBio.02513-14.


The Myelin and Lymphocyte Protein MAL Is Required for Binding and Activity of Clostridium perfringens ε-Toxin.

Rumah KR, Ma Y, Linden JR, Oo ML, Anrather J, Schaeren-Wiemers N, Alonso MA, Fischetti VA, McClain MS, Vartanian T.

PLoS Pathog. 2015 May 20;11(5):e1004896. doi: 10.1371/journal.ppat.1004896. eCollection 2015 May.


Re-evaluating the treatment of acute optic neuritis.

Bennett JL, Nickerson M, Costello F, Sergott RC, Calkwood JC, Galetta SL, Balcer LJ, Markowitz CE, Vartanian T, Morrow M, Moster ML, Taylor AW, Pace TW, Frohman T, Frohman EM.

J Neurol Neurosurg Psychiatry. 2015 Jul;86(7):799-808. doi: 10.1136/jnnp-2014-308185. Epub 2014 Oct 29. Review.


Isolation of Clostridium perfringens type B in an individual at first clinical presentation of multiple sclerosis provides clues for environmental triggers of the disease.

Rumah KR, Linden J, Fischetti VA, Vartanian T.

PLoS One. 2013 Oct 16;8(10):e76359. doi: 10.1371/journal.pone.0076359. eCollection 2013.


Development of a novel portable multi-channel near infrared spectroscopy system.

Kostic MN, Vartanian T, Culjat M, Singh R, Grundfest WS.

Stud Health Technol Inform. 2013;184:230-4.


The effects of childhood SNAP use and neighborhood conditions on adult body mass index.

Vartanian TP, Houser L.

Demography. 2012 Aug;49(3):1127-54. doi: 10.1007/s13524-012-0115-y.


T2 prep three-dimensional spiral imaging with efficient whole brain coverage for myelin water quantification at 1.5 tesla.

Nguyen TD, Wisnieff C, Cooper MA, Kumar D, Raj A, Spincemaille P, Wang Y, Vartanian T, Gauthier SA.

Magn Reson Med. 2012 Mar;67(3):614-21. doi: 10.1002/mrm.24128. Epub 2012 Jan 3.


The effects of childhood neighborhood conditions on self-reports of adult health.

Vartanian TP, Houser L.

J Health Soc Behav. 2010 Sep;51(3):291-306. doi: 10.1177/0022146510378241.


Nna1 mediates Purkinje cell dendritic development via lysyl oxidase propeptide and NF-κB signaling.

Li J, Gu X, Ma Y, Calicchio ML, Kong D, Teng YD, Yu L, Crain AM, Vartanian TK, Pasqualini R, Arap W, Libermann TA, Snyder EY, Sidman RL.

Neuron. 2010 Oct 6;68(1):45-60. doi: 10.1016/j.neuron.2010.08.013.


Carbon monoxide suppresses membrane expression of TLR4 via myeloid differentiation factor-2 in betaTC3 cells.

Rocuts F, Ma Y, Zhang X, Gao W, Yue Y, Vartanian T, Wang H.

J Immunol. 2010 Aug 15;185(4):2134-9. doi: 10.4049/jimmunol.0902782. Epub 2010 Jul 14.


Hyaluronan blocks oligodendrocyte progenitor maturation and remyelination through TLR2.

Sloane JA, Batt C, Ma Y, Harris ZM, Trapp B, Vartanian T.

Proc Natl Acad Sci U S A. 2010 Jun 22;107(25):11555-60. doi: 10.1073/pnas.1006496107. Epub 2010 Jun 3.


A clear and present danger: endogenous ligands of Toll-like receptors.

Sloane JA, Blitz D, Margolin Z, Vartanian T.

Neuromolecular Med. 2010 Jun;12(2):149-63. doi: 10.1007/s12017-009-8094-x. Epub 2009 Oct 14. Review.


T lymphocytes potentiate endogenous neuroprotective inflammation in a mouse model of ALS.

Chiu IM, Chen A, Zheng Y, Kosaras B, Tsiftsoglou SA, Vartanian TK, Brown RH Jr, Carroll MC.

Proc Natl Acad Sci U S A. 2008 Nov 18;105(46):17913-8. doi: 10.1073/pnas.0804610105. Epub 2008 Nov 7.


Clinical and neuropathologic findings in a woman with the FMR1 premutation and multiple sclerosis.

Greco CM, Tassone F, Garcia-Arocena D, Tartaglia N, Coffey SM, Vartanian TK, Brunberg JA, Hagerman PJ, Hagerman RJ.

Arch Neurol. 2008 Aug;65(8):1114-6. doi: 10.1001/archneur.65.8.1114.


Melanoma complicating treatment with natalizumab for multiple sclerosis.

Mullen JT, Vartanian TK, Atkins MB.

N Engl J Med. 2008 Feb 7;358(6):647-8. doi: 10.1056/NEJMc0706103. No abstract available.


The immunogenicity of disease-modifying therapies for multiple sclerosis: clinical implications for neurologists.

Fox EJ, Vartanian TK, Zamvil SS.

Neurologist. 2007 Nov;13(6):355-62. Review.


Toll-like receptor 3 is a potent negative regulator of axonal growth in mammals.

Cameron JS, Alexopoulou L, Sloane JA, DiBernardo AB, Ma Y, Kosaras B, Flavell R, Strittmatter SM, Volpe J, Sidman R, Vartanian T.

J Neurosci. 2007 Nov 21;27(47):13033-41.


TLR8: an innate immune receptor in brain, neurons and axons.

Ma Y, Haynes RL, Sidman RL, Vartanian T.

Cell Cycle. 2007 Dec 1;6(23):2859-68. Epub 2007 Sep 4. Review.


Myosin Va controls oligodendrocyte morphogenesis and myelination.

Sloane JA, Vartanian TK.

J Neurosci. 2007 Oct 17;27(42):11366-75.


WAVE1 and regulation of actin nucleation in myelination.

Sloane JA, Vartanian TK.

Neuroscientist. 2007 Oct;13(5):486-91. Review.


Toll-like receptor 8 functions as a negative regulator of neurite outgrowth and inducer of neuronal apoptosis.

Ma Y, Li J, Chiu I, Wang Y, Sloane JA, Lü J, Kosaras B, Sidman RL, Volpe JJ, Vartanian T.

J Cell Biol. 2006 Oct 23;175(2):209-15.


A mechanism for neurodegeneration induced by group B streptococci through activation of the TLR2/MyD88 pathway in microglia.

Lehnardt S, Henneke P, Lien E, Kasper DL, Volpe JJ, Bechmann I, Nitsch R, Weber JR, Golenbock DT, Vartanian T.

J Immunol. 2006 Jul 1;177(1):583-92.


WAVE1 is required for oligodendrocyte morphogenesis and normal CNS myelination.

Kim HJ, DiBernardo AB, Sloane JA, Rasband MN, Solomon D, Kosaras B, Kwak SP, Vartanian TK.

J Neurosci. 2006 May 24;26(21):5849-59.


Purkinje neuron degeneration in nervous (nr) mutant mice is mediated by a metabolic pathway involving excess tissue plasminogen activator.

Li J, Ma Y, Teng YD, Zheng K, Vartanian TK, Snyder EY, Sidman RL.

Proc Natl Acad Sci U S A. 2006 May 16;103(20):7847-52. Epub 2006 May 8.


High-resolution anatomic, diffusion tensor, and magnetization transfer magnetic resonance imaging of the optic chiasm at 3T.

Vinogradov E, Degenhardt A, Smith D, Marquis R, Vartanian TK, Kinkel P, Maier SE, Hackney DB, Lenkinski RE.

J Magn Reson Imaging. 2005 Aug;22(2):302-6.


Peroxynitrite generated by inducible nitric oxide synthase and NADPH oxidase mediates microglial toxicity to oligodendrocytes.

Li J, Baud O, Vartanian T, Volpe JJ, Rosenberg PA.

Proc Natl Acad Sci U S A. 2005 Jul 12;102(28):9936-41. Epub 2005 Jul 5.


The ErbB4 neuregulin receptor mediates suppression of oligodendrocyte maturation.

Sussman CR, Vartanian T, Miller RH.

J Neurosci. 2005 Jun 15;25(24):5757-62.


Neutralizing antibodies to disease-modifying agents in the treatment of multiple sclerosis.

Vartanian TK, Zamvil SS, Fox E, Sorensen PS.

Neurology. 2004 Dec 14;63(11 Suppl 5):S42-9. Review.


Impact of neutralizing antibodies on the clinical efficacy of interferon beta in multiple sclerosis.

Vartanian T, Sölberg Sørensen P, Rice G.

J Neurol. 2004 Jun;251 Suppl 2:II25-30.


Integrin-linked kinase is required for laminin-2-induced oligodendrocyte cell spreading and CNS myelination.

Chun SJ, Rasband MN, Sidman RL, Habib AA, Vartanian T.

J Cell Biol. 2003 Oct 27;163(2):397-408. Erratum in: J Cell Biol. 2006 Jul 17;174(2):315.


Activation of innate immunity in the CNS triggers neurodegeneration through a Toll-like receptor 4-dependent pathway.

Lehnardt S, Massillon L, Follett P, Jensen FE, Ratan R, Rosenberg PA, Volpe JJ, Vartanian T.

Proc Natl Acad Sci U S A. 2003 Jul 8;100(14):8514-9. Epub 2003 Jun 24.

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