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ŞEKERLER, TURGUT

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ŞEKERLER

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TURGUT

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2017 - 20192
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Subject: APOPTOSIS ×

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    Protective effect of ferulic acid on cisplatin induced nephrotoxicity in rats
    (ELSEVIER, 2017) OKUYAN, BETÜL; Bami, Erliasa; Ozakpinar, Ozlem Bingol; Ozdemir-Kumral, Zarife Nigar; Koroglu, Kutay; Ercan, Feriha; Cirakli, Zeynep; Sekerler, Turgut; Izzettin, Fikret Vehbi; Sancar, Mesut; Okuyan, Betul
    This study aims to determine the potential protective effects of ferulic acid against cisplatin-induced nephrotoxicity and to compare its effect with curcumin, a well-known protective agent against cisplatin- induced toxicity in rats. Administration of cisplatin resulted in high BUN (Blood Urea Nitrogen), creatinine, MDA (Malondialdehyde), MPO (Myeloperoxidase), TOS (Total Oxidative Status), PtNT (Protein Nitrotyrosine) levels (p < 0.05). Histological observations showed abnormal morphology of kidney; in addition with appearance of TUNEL positive cells indicating apoptosis in cisplatin administered group. HO-1 (Heme Oxygenase-1) levels measured by RT-PCR (Real Time Polymerase Chain Reaction), and TAS (Total Antioxidative Status) revealed antioxidant depletion due to cisplatin toxicity in animals (p < 0.05). All parameters showed improvement in groups treated with ferulic acid (p < 0.05). Ferulic acid treatment was found significant in preventing oxidative stress, increasing antioxidative status and regaining histological parameters to normal, indicating nephroprotective and antioxidant effects of this phenolic compound.
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    Synthesis and Biological Activity of N-(arylsulfonyl) Valine Hydrazones and Assistance of NMR Spectroscopy for Definitive 3D Structure
    (BENTHAM SCIENCE PUBL LTD, 2019) TATAR, ESRA; Senkardes, Sevil; Tatar, Esra; Nepravishta, Ridvan; Cela, Dorisa; Paci, Maurizio; Ozakpinar, Ozlem Bingol; Sekerler, Turgut; De Clercq, Erik; Pannecouque, Christophe; Kucukguzel, S. Guniz; Kucukguzel, Ilkay
    Background: Hydrazide-hydrazones constitute an important class of compounds for new drug development. In this study, a series of 39 new acylhydrazones (3-41), derived from (2S)-3-methyl-2-[[( 4-methylphenyl)sulfonyl]amino]butanoic acid hydrazide were synthesized with further aim to achieve biologically active acylhydrazones carrying an amino acid side chain. Methods: Compounds 3-41 were synthesized by microwave-assisted method. All synthesized compounds have been tested for their anti-HIV activity compound 21 was subjected to a new set of 2D-NMR analysis for the characterization of the isomers in solution and determination of its 3D structure. Results: The IC50 values for compounds 2-40 were found between >125-10.90 mu g/ml against HIV-1( IIIB) and HIV-2(ROD) strains in MT-4 cells. Compounds 3, 6, 10, 12, 23, 24, 27, 32, and 37 with CC50 values between 10.90-14.50 mu g/ml were selected to evaluate for their antileukemia activity. IC50 values for these mentioned compounds were found as >100 mu M on human chronic myelogenous leukemia, K562 cell line. Conclusion: Some compounds with IC50 values between 10.90-14.50 mu g/ml will be of benefit in the development of novel leads.