Araştırma Çıktıları

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Author: search.filters.author.Avsar, TimucinHas files: Yes

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    Associations of meningioma molecular subgroup and tumor recurrence
    (OXFORD UNIV PRESS INC, 2021-01-01) Youngblood, Mark W.; Miyagishima, Danielle F.; Jin, Lan; Gupte, Trisha; Li, Chang; Duran, Daniel; Montejo, Julio D.; Zhao, Amy; Sheth, Amar; Tyrtova, Evgeniya; Ozduman, Koray; Iacoangeli, Francesco; Peyre, Matthieu; Boetto, Julien; Pease, Matthew; Avsar, Timucin; Huttner, Anita; Bilguvar, Kaya; Kilic, Turker; Pamir, M. Necmettin; Amankulor, Nduka; Kalamarides, Michel; Erson-Omay, E. Zeynep; Gunel, Murat; Moliterno, Jennifer
    Background. We and others have identified mutually exclusive molecular subgroups of meningiomas
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    CSF Proteomics Identifies Specific and Shared Pathways for Multiple Sclerosis Clinical Subtypes
    (PUBLIC LIBRARY SCIENCE, 2015-01-01) Avsar, Timucin; Durasi, Ilknur Melis; Uygunoglu, Ugur; Tutuncu, Melih; Demirci, Nuri Onat; Saip, Sabahattin; Sezerman, O. Ugur; Siva, Aksel; Turanli, Eda Tahir
    Multiple sclerosis (MS) is an immune-mediated, neuro-inflammatory, demyelinating and neurodegenerative disease of the central nervous system (CNS) with a heterogeneous clinical presentation and course. There is a remarkable phenotypic heterogeneity in MS, and the molecular mechanisms underlying it remain unknown. We aimed to investigate further the etiopathogenesis related molecular pathways in subclinical types of MS using proteomic and bioinformatics approaches in cerebrospinal fluids of patients with clinically isolated syndrome, relapsing remitting MS and progressive MS (n=179). Comparison of disease groups with controls revealed a total of 151 proteins that are differentially expressed in clinically different MS subtypes. KEGG analysis using PANOGA tool revealed the disease related pathways including aldosterone-regulated sodium reabsorption (p=8.02x10(-5)) which is important in the immune cell migration, renin-angiotensin (p=6.88x10(-5)) system that induces Th17 dependent immunity, notch signaling (p=1.83x10(-10)) pathway indicating the activated remyelination and vitamin digestion and absorption pathways (p=1.73x10(-5)). An emerging theme from our studies is that whilst all MS clinical forms share common biological pathways, there are also clinical subtypes specific and pathophysiology related pathways which may have further therapeutic implications.