Kuran, Ebru Didem

Profile URL
https://hdl.handle.net/20.500.14627/1211
Name Variants
Job Title
Dr. Öğr. Üyesi
Email Address
ebru.kuran@fbu.edu.tr
Main Affiliation
ECZACILIK MESLEK BİLİMLERİ BÖLÜMÜ
Status
Current Staff
Website
ORCID ID
0000-0001-5068-0188
Scopus Author ID
58192189000
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
AEJ-4249-2022

Research Topics

Domains
Physical SciencesHealth SciencesLife Sciences
Fields
ChemistryMedicineBiochemistry, Genetics and Molecular BiologyComputer Science
Subfields
Organic ChemistryPharmacologyMolecular BiologyComputational Theory and Mathematics
Specific Research Areas
Synthesis and biological activity
Cholinesterase and Neurodegenerative Diseases
Enzyme function and inhibition
Synthesis and Characterization of Heterocyclic Compounds
Computational Drug Discovery Methods

Sustainable Development Goals

SDG data is not available

Publication Collaboration

Affiliation Name Count
Istanbul University 12
European University of Lefke 4
Bezmiâlem Vakıf Üniversitesi 4
Istanbul Kent University 4
Fenerbahçe University 3
1 / 7
Data obtained from OpenAlex
Scholarly Output

3

Articles

3

WoS Citation Count

3

Scopus Citation Count

3

Filters

2025 - 20263

Settings

Author of Publication: search.filters.isAuthorOfPublication.aab3453b-7db3-4cd6-a1a4-0489f8a342bb

Scholarly Output Search Results

Now showing 1 - 3 of 3
  • Article
    Sub-Cytotoxic Mitochondrial Stress in Cardiomyocytes and Whole-Organism Toxicity in C. Elegans Induced by Molnupiravir
    (SAGE Publications Inc, 2026) Gunaydin-Akyildiz, Aysenur; Keskin, Zehra; Ozhan, Gul; Kuran, Ebru Didem; Gulec, Meltem
    Many antiviral agents are known to induce off-target mitochondrial toxicity due to the prokaryotic origin of mitochondria. Mitochondrial dysfunction is frequently linked to cardiotoxicity. We aimed to elucidate the mitochondrial toxicity profile of molnupiravir via focusing on mitochondrial dynamics, biogenesis, and oxidative stress in cardiac cells. Mitochondrial function was evaluated by luminometric measurement of ATP (adenosine triphosphate) content, and flow cytometric analysis of mitochondrial membrane potential, and mitochondrial mass. The expression levels of genes involved in mitochondrial fusion-fission were assessed by RT-PCR. In addition, molecular docking analysis was performed to evaluate the interaction between molnupiravir and the dynamin related-protein DRP1. Protein carbonylation was determined as an oxidative stress parameter. Toxicity evaluation was further investigated in Caenorhabditis elegans to support the in vitro findings at the organismal level. Molnupiravir exposure led to a significant dose-dependent reduction in intracellular ATP level and mitochondrial mass, accompanied by increased protein carbonylation. Mitochondrial membrane potential remained slightly increased. Alterations in the expression of genes regulating mitochondrial dynamics suggested an imbalance between fusion and fission processes, while mitochondrial biogenesis-related signaling was progressively suppressed. C. elegans exposed to higher concentrations of the drug (20-500 & micro;M) exhibited significant lifespan reduction at all doses. Molecular docking analysis demonstrated a moderate binding affinity of molnupiravir to DRP1, supporting a potential direct interaction with mitochondrial fission machinery. In conclusion, our results demonstrate that molnupiravir induces mitochondrial stress through oxidative damage, impaired biogenesis, and altered dynamics, emphasizing the need for careful evaluation of mitochondrial safety of molnupiravir in cardiac tissue.
  • Article
    Synthesis, Experimental and Quantum Mechanical Investigation of the Crystal Structures of Two Triazolyl-Indole Compounds, along with the Evaluation of Their Antioxidant Activity
    (Elsevier, 2026) Pınar, Deniz; Kurt-Şirin, Özlem; Ulusoy-Güzeldemirci, Nuray; Dincel, Efe Doğukan; Karayel, Arzu; Kuran, Ebru Didem; Ulusoy‐güzeldemirci, Nuray
    In this study, two 1,2,4-triazolyl-indole compounds, 5-(1H-indol-3-yl)-4-propyl-2,4 dihydro-3H-1,2,4-triazole-3-thione (3a) and 5-(1H-indol-3-yl)-4-butyl-2,4-dihydro-3H-1,2,4-triazole-3-thione (3b), were synthesized and the structures of these compounds were determined by X-ray diffraction method. These two compounds crystallize in the orthorhombic space groups, Pbca. The structures have been determined by direct methods and refined to R, 0.0459 (3a) and 0.0714 (3b). The molecular and crystal structures are stabilized by two intermolecular hydrogen bond for both molecules. The triazole parts of the molecules are almost perpendicular to propyl and butyl groups. NMR studies was also performed to enhance comprehension of the molecular structure of the compounds. The most stable states of the structures, as determined by both DFT analysis and experimental realizations (X-ray, NMR and FT-IR), are the thione form. Although the thione forms are thermodynamically more stable than the thiol forms (Delta H degrees approximate to-15 kcal/mol), they display higher chemical reactivity, as reflected by their smaller HOMO-LUMO energy gaps (Delta E = 4.374 eV for 3a and 4.377 eV for 3b). In addition, the antioxidant activities of both compounds were evaluated using ABTS, DPPH, and FRAP assays. Although both (3a) and (3b) exhibited measurable radical scavenging and reducing power, their antioxidant capacities were found to be lower than that of the reference compound quercetin.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Synthesis, Characterization, and Antimicrobial Evaluation of Some Novel Hydrazinecarbothioamides
    (Galenos Publishing House, 2025) Güler, Emrah; Dinç, Harika Öykü; Dincel, Efe Doğukan; Güzeldemirci, Nuray Ulusoy; Başoğlu-ünal, Faika; Kuran, Ebru Dıdem; Başoğlu, Faika; Ulusoy Güzeldemirci, Nuray
    Objectives: This study focused on synthesizing and characterizing novel thiosemicarbazide derivatives containing a 1,2,4-triazole moiety and evaluating their antimicrobial activity against several bacterial strains. The research aimed to identify key structural features that enhance antimicrobial efficacy through structure-activity relationship analysis and identify the minimum inhibitory concentration (MIC) of the most potent compounds to assess their potential for further development as antimicrobial agents. Materials and Methods: Nine novel thiosemicarbazide derivatives containing a 1,2,4-triazole moiety were synthesized by reacting 1,2,4-triazole derivatives with thiosemicarbazide precursors, and the products were characterized using infrared spectroscopy, proton nuclear magnetic resonance (1H-NMR), carbon-13 nuclear magnetic resonance (13C-NMR) spectroscopy, and elemental analysis. The antimicrobial activity of these compounds (5a-i) was tested against Klebsiella pneumoniae (K. pneumoniae), Escherichia coli, Staphylococcus aureus, Enterococcus faecalis, and Pseudomonas aeruginosa (P. aeruginosa), using microdilution, disk diffusion, and broth microdilution methods. Dimethyl sulfoxide was used as a negative control, and Vancomycin and Meropenem were used as positive controls, with all results converted to µM for consistent analysis. Results: The synthesized thiosemicarbazide derivatives (5a-i) were confirmed to be structurally correct through Fourier-transform infrared spectroscopy, 1H-NMR, and 13C-NMR spectroscopy. Among the tested compounds, 5e (4-bromophenyl) and 5g (n-propyl) showed significant antimicrobial activity, with 5g exhibiting the strongest effects against S. aureus and P. aeruginosa. Other derivatives, such as 5b (4-NO2Ph), 5c (4-FPh), and 5d (4-ClPh), showed moderate activity, while no significant activity was observed against K. pneumoniae or E. faecalis. Conclusion: The study successfully synthesized a series of novel thiosemicarbazide derivatives with a 1,2,4-triazole moiety and evaluated their antimicrobial potential. Compounds 5e and 5g exhibited significant antibacterial activity, particularly against S. aureus and P. aeruginosa, with MIC values in the low micromolar range. These findings suggest that the compounds hold promise as potential antimicrobial agents, and further studies should focus on optimizing their efficacy and exploring their mechanism of action.