Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14627/7
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Article New Diclofenac Hydrazones: Design, Synthesis, in Silico Studies and Anticancer Evaluation Against Breast Cancer(Elsevier, 2026) Birgul, Kaan; Oktay, Lalehan; Bekci, Hatice; Cikla-Suzgun, Pelin; Durdagi, Serdar; Kucukguzel, S. GunizBreast cancer remains one of the most prevalent and lethal malignancies among women, highlighting the urgent need for novel therapeutic strategies that can overcome resistance mechanisms. The p38 alpha mitogen-activated protein kinase (MAPK14) plays a key role in inflammation-associated oncogenic signaling, making it an attractive molecular target for drug development. In this study, a novel series of diclofenac-based hydrazone derivatives (4a-4o) were designed, synthesized, and characterized using FT-IR, 1H- and 13C-NMR spectroscopy, thin-layer chromatography, and elemental analysis. Computational target profiling using SwissTargetPrediction identified MAPK14 as the primary predicted target. Molecular docking against the MAPK14 crystal structure (PDB ID: 1WBS) revealed high binding affinities (-11.41 to -8.34 kcal/mol), supported by MM/GBSA free energy calculations and molecular dynamics simulations, which confirmed stable ligand-protein interactions through hydrogen bonding with Asp168 and Glu71. In vitro cytotoxicity assays on MCF-7 (luminal A) and MDA-MB-231 (triple-negative) breast cancer cell lines demonstrated low-micromolar IC50 values, with compounds 4c, 4d, and 4e showing the strongest activity (2.1-4.5 mu M), surpassing the reference drug Tamoxifen. Overall, the results indicate that diclofenac hydrazones represent promising candidates anticancer properties through MAPK14 inhibition, providing a foundation for the development of next-generation therapeutics against breast cancer.Article Safety and Efficacy of Colchicine in COVID-19 Treatment: Systematic Review and Meta-Analysis(Elsevier, 2025) Nada, Ahmed Hosney; Ibrahim, Ismail A.; Asar, Nada Khalid; Qenawy, Abdulrahman; Mohammed, Mariam M.; Wagdy, Mohamed; Farouk, Heidi SherifBackground: Colchicine is an anti-inflammatory drug used for the treatment of gout and other autoinflammatory conditions. Several trials reported promising results of the efficacy of colchicine in Covid-19 due to its antiinflammatory properties. However, applying these results to clinical settings remains the subject of ongoing research. Methods: We performed a systematic review and meta-analysis on the efficacy and safety of colchicine in the treatment of Covid-19. PubMed, Cochrane Library, Web of Science, and Scopus were searched for relevant studies. The primary outcomes were 28-day mortality, invasive mechanical ventilation, non-invasive mechanical ventilation, and ICU admissions. The risk ratio was used to compare effectiveness between the two groups. Subgroup analysis was done for C-reactive protein and duration of hospitalization. Results: 17 randomized controlled trials with a total of 25478 patients were included. The overall Risk ratio didn't favor any of the two groups in terms of 28-day mortality (RR =1.03, 95 % CI [0.93:1.15], P = 0.58), noninvasive mechanical ventilation (RR = 0.81, 95 % CI [0.44:1.48], P = 0.49), ICU admission (RR = 0.89, 95 % CI [0.56:1.41], P = 0.62). The overall mean difference (MD) did not show statistical significance between both groups in terms of Creactive protein (CRP) (mg/dl) (MD = -1.21, 95 % CI [-2.42:0.01], P = 0.05), lactate dehydrogenase (LDH) (U/ L) (MD = 50.95, 95 % CI [-92.07: 193.98], Ferritin (ng/ml) (MD = 128.08, 95 % CI [51.97:204.18], P = 0.001), ICU length of stay (MD = -0.09, 95 % CI [-0.34:0.15], P = 0.45) and duration of hospitalization (MD = -0.41, 95 % CI [-1.56:0.73], P = 0.48). Conclusion: In Covid-19 treatment, colchicine didn't result in significant benefits in terms of clinical outcomes. More large-scale randomized clinical trials with standardized dosages and long-term follow-up are needed for further investigation into the colchicine effect.Article Citation - WoS: 2Citation - Scopus: 2Novel Triazole-Urea Hybrids as Promising EGFR Inhibitors: Synthesis, Molecular Modeling and Antiproliferative Activity Studies Against Breast Cancer(Elsevier, 2025) Ture, Asli; Gulcan, Mehmet Metehan; Birgul, Serap Ipek Dingis; Erdogan, Oguz; Erdogan, Omer; Tuncay, Fulya Oz; Kucukguzel, Ilkay; Öz Tuncay, Fulya; Dingiş Birgül, Serap İpekBreast cancer is the second leading cause of mortality among women globally. In this study, novel promising urea derivatives containing a 4-phenyl-5-sulphanylidene-4,5-dihydro-1H-1,2,4-triazole group were synthesized and evaluated for their biological activities against breast cancer. The cytotoxicity and apoptotic profiles of these compounds were assessed on the MCF7 breast cancer cell line and the L929 fibroblast cell line. Compound 5c exhibited the strongest anticancer activity against MCF7 cells with an IC50 value of 56.97+4.22 mu M, while it showed significantly lower cytotoxicity against L929 cells (IC50 = 1651+18.39 mu M). Compound 5c also induced early apoptosis in MCF7 cells, with an apoptosis rate of 18.40% and 5.28%, respectively. Additionally, the EGFR inhibitory activities of the synthesized compounds were evaluated, with compound 5i demonstrating the most potent EGFR inhibition, showing an IC50 value of 35.1 nM. These results suggest that compound 5c likely exerts its anticancer effects through mechanisms other than EGFR inhibition, while compound 5i has significant potential as an effective EGFR inhibitor. Molecular modeling studies were conducted to suggest putative binding interactions of compounds 5d, 5e and 5i with wildtype hEGFR. Further studies are warranted to explore their activity against other cancer types.Article Turkish Validity and Reliability Study of the Kidney Transplant Understanding Tool (K-TUT) in Kidney Transplant Recipients(Elsevier, 2025) Akinci, Naile; Genc, Kadriye Nilay; Toprak, CaglaAim: The study was conducted methodologically to evaluate the validity and reliability of the KTUT scale in kidney transplant recipients. Material and Method: The population of the study consisted of kidney transplant patients at a private hospital group in Istanbul, while the sample comprised patients who met the inclusion criteria and volunteered for the study. Based on ten times the number of scale items, 220 individuals were included in the sample to prevent data loss and to ensure high representativeness. In the study, data collection tools such as the "Patient Information Form" and the "KTUT" scale were employed. The test-retest study was repeated two weeks later with 50 participants. The participants in the retest were not included in other tests of the scale. Findings: The overall content validity index of the scale (S-CVI/Ave) was found to be 0.93. According to the experts' opinions, the content validity of the scale is high, and the majority of the items have been deemed appropriate for the measurement purpose. The internal consistency reliability coefficient of the scale (Cronbach's Alpha) was calculated as 0.789. This threshold indicates that the scale possesses an acceptable level of reliability for use at the group level. In addition, the results of the study reveal that the scores of the K-TUT scale show a significant difference in the 27 % lower and 27 % upper groups. Conclusion: As a result of the study, the K-TUT scale has been shown to reliably distinguish knowledge levels and to be an effective measurement tool in the field of kidney transplant. It is thought that using the Turkish version of the K-TUT to evaluate the knowledge levels of kidney transplant recipients will contribute to evaluation of developed programs and the improvement of patients' treatment processes.Article Evaluation of Hopelessness, Decision Regret and Desire for Retransplantation in Patients With Graft Loss After Kidney Transplantation(Elsevier, 2025) Akinci, Naile; Toprak, CaglaAim: In this descriptive study, it was aimed to evaluate hopelessness, decision regret, and desire to be transplanted again in patients who developed graft loss after kidney transplantation. Material and Method: The study sample consisted of all patients who developed graft loss after kidney transplantation between January 2017 and February 2021 in a private hospital in XXX, who met the inclusion criteria and volunteered for the study. "Patient Information Form", 'Beck Hopelessness Scale' and 'Decision Regret Scale' were used as data collection tools in the study. Findings: It was determined that participants experienced a moderate level of hopelessness after graft rejection (13.370 +/- 4.379) while the average scores on the decision regret scale were generally high (66.435 +/- 18.213). Regarding the desire to be transplanted again, it was observed that the majority of the participants (52.2 %) did not want to be transplanted again. According to the results of the correlation analysis, there was a significant correlation between hopelessness and decision regret scores (p* < 0.05) while there was no significant correlation with the desire to be transplanted again (p > 0.05). In addition, hopelessness (p = 0.034) scores of individuals who were not employed were significantly higher than those who were employed, and both hopelessness (p = 0.000) and decision regret (p = 0.048) scores of those without religious belief were significantly higher than those with religious belief. Conclusion: The findings of the study emphasize the critical importance of monitoring and psychological support processes before and after kidney transplantation. Understanding the emotional processes individuals experience after kidney transplant graft loss is important for the development of psychological support and intervention strategies.Article Citation - WoS: 1Citation - Scopus: 1The Effect of Neck Mobilization Vs. Combined Neck and Lumbar Mobilization on Pain and Range of Motion in People With Cervical Disc Herniation: a Randomized Controlled Study(Elsevier, 2025) Ozdincler, Arzu; Aktas, Dogan; Reyhanioglu, Duygu Aktar; Ozturk, Basar; Aktar Reyhanioglu, DuyguBackground: To assess the effectiveness of Kaltenborn-Evjenth Orthopedic Manual Therapy (KEOMT) applied to cervical-only mobilization versus both lumbar and cervical regions on pain intensity and range of motion (ROM) in individuals with cervical disc herniation. Methods: Thirty-three participants were enrolled in the study. The patients were randomly assigned to two groups. Group A received cervical-only KEOMT, while Group B received combined lumbar and cervical KEOMT. Interventions were administered three times a week for four weeks. Pain was measured using the Visual Analog Scale (VAS), ROM was assessed for flexion and lateral flexion, and Neck Pain and Disability Index (NPDI) and Short-Form 36 Health Survey (SF-36) were used for evaluation. Results: In intra-group measurements, a statistically significant difference was observed in all parameters of pain, ROM, disability, and quality of life for the mobilization methods applied in both groups (p < 0.05). Group B demonstrated significantly greater improvements in ROM/flexion, pain, and disability outcomes compared to Group A in inter-group measurements (p < 0.05). Physical and emotional sub-groups of quality of life measures also favored Group B in intergroup analysis (p < 0.05). However, the power values for ROM and quality of life parameters were found to be low. Conclusions: The cervical plus lumbar KEOMT technique is more effective than cervical-only mobilization in improving pain and disability. However, low power values for ROM and quality of life suggest these results may lack clinical significance, warranting further research.Article Citation - WoS: 5Citation - Scopus: 5The Effects of Rational Emotive Behavior Therapy and Motivational Interviewing on Emotions, Automatic Thoughts, and Perceived Performance of Elite Female Volleyball Players(Elsevier, 2023) Urfa, O.; Asci, F. H.Objectives: The aim of this study was to examine the effect of Rational Emotive Behavior Therapy intervention alone (REBT-A) or with motivational interviewing (REBT + MI) on the emotions, automatic thoughts, and perceived performance of elite female volleyball players. Design: and method: Single-case, staggered multiple-baseline AB and ABC designs were adapted in the study. Five female volleyball players participated in the study, of which three players participated in the REBT-A and two players participated in the REBT + MI. The athletes were competing in the national volleyball league (Mage = 28, SD = 5.52). All participants were elite athletes with at least ten years of sports experience. Three scores (T1, T2, T3) were calculated for the athletes' perceived performance, emotion, and automatic thoughts. T1 was the baseline score calculated before the sessions. T2 was calculated after the first two sessions (the first three sessions for REBT + MI) and T3 was calculated after the last three sessions. In the data analysis, percentage changes, effect size, and visual analyzes were used in the T1, T2, and T3 scores. Results: REBT-A and REBT + MI interventions increased perceived performance, positive emotions, and positive automatic thoughts, and decreased negative emotions and negative automatic thoughts. REBT + MI was more advantageous than REBT-A in increasing positive emotion, positive automatic thought, and perceived performance. Conclusions: As a result, REBT alone or with motivational interviewing has a positive effect on perceived performance, emotions, and automatic thoughts, but REBT + MI has greater potential to increase positive constructs.Article Citation - WoS: 10Citation - Scopus: 10Novel Azole-Urea Hybrids as Vegfr-2 Inhibitors: Synthesis,<i> In</I><i> Vitro</I> Antiproliferative Evaluation And<i> In</I><i> Silico</I> Studies(Elsevier, 2023) Shirzad, Mohammad Musa; Kulabas, Necla; Erdogan, Omer; Cevik, Ozge; Dere, Damla; Yelekci, Kemal; Kucukguzel, IlkayThe vascular endothelial growth factor receptor-2 (VEGFR-2) is a receptor tyrosine kinase known to be abnormally expressed in various malignant tumors, including breast cancer, and is considered one of the most important contributors to tumor angiogenesis. Sorafenib is one of many VEGFR-2 inhibitors that have received approval for clinical use from the US FDA in recent years. Accordingly, in this study, the synthesis of two new pyrazoles, six 1,3,4-oxadiazoles, four 1,3,4-thiadiazoles, and ten 1,2,4-triazole-3-thione derivatives having structural characteristics similar to sorafenib was carried out. A preliminary screening of synthesized compounds and known inhibitors sorafenib and staurosporine at 10 mu M concentration on in vitro activity of VEGFR-2 was performed, and compounds 10c, 8a, and 11 g were identified as the most potent derivatives with% VEGFR-2 residual activities lower than 30%, and dose-dependent inhibition studies was carried out to determine the IC50 values of these inhibitors. Compound 10c was found to be the most potent inhibitor of VEGFR-2 activity with an IC50 value of 0.664 mu M. The anti-proliferative activity of synthesized derivatives was assessed against a breast carcinoma (MCF-7) cell line, a triple negative human breast adenocarcinoma (MDA-MB-231) cell line, and noncancerous fibroblast cells (L929). Compound 8a displayed superior activity when compared to sorafenib against MCF-7 (7.69 fold) and MDA-MB-231 (1.52 fold) cell lines while displaying 3.75-fold less toxicity against the normal L929 cell line. Annexin V binding assay revealed that compound 8a significantly increased early and late apoptosis in MCF-7 cells and late apoptosis and necrosis in MDA-MB-231 cells. Computational studies such as molecular docking and ADMET evaluation were performed to elucidate the binding interactions and druglikeness of the synthesized compounds. The results indicate that compound 8a could be a promising candidate for the development of a novel anti-angiogenic and anti-proliferative agent.Article Citation - WoS: 6Citation - Scopus: 6Tuning the Magnetic and Magnetocaloric Properties of a Compound Via Mixing (1-X).la0.67ca0.33mno3+x.la0.67sr0.33mno3 (x=0, 0.25, 0.50, 0.75, 1): Composite Materials or Composite Compounds?(Elsevier, 2023) Coskum, Atilla; Irmak, Ali Ekber; Altan, Baris; Ak, Yavuz Selim; Coskum, Arictan Tulga; Coşkun, AtillaThis study aims to optimize the magnetic and magnetocaloric properties of composite materials (or compounds) produced by mixing different ratios of two manganite compounds having different structural, magnetic, and magnetocaloric properties. The parent compounds were prepared using the sol-gel production method and the ultrasonic bath mixing technique was involved to prepare desired composite materials. SEM analyses revealed that the parents and composite materials have the same surface morphologies except for their grain sizes. EDS analyses were performed to identify the possible/candidate phases in the composite materials. These candidate phases are involved in refining XRD data. The fact that the Curie temperatures (TC) of the composite materials were found to be much higher than those of the parent compounds was another proof that composite compounds were obtained instead of composite materials by using the ultrasonic bath mixing technique. Although the TC of the composite compounds was higher than those of the parent compounds, the maximum magnetic entropy values were found to vary between the maximum magnetic entropy valuesof the parent compounds.Article Citation - WoS: 2Citation - Scopus: 1Synthesis and Investigation of Cytotoxic Effects of Compounds Derived From Flurbiprofen(Elsevier, 2023) Gokoglan, Ecem; Dere, Damla; Bedir, Ipek; Yelekci, Kemal; Telci, Dilek; Kucukguzel, S. GunizNew flurbiprofen derivatives containing 1,2,4-triazoline-5-thione (4) and thioethers (5a-r) were synthesized in this study. The structures of synthesized compounds were characterized by spectral methods (FT-IR, 1H NMR, 13C NMR) and 19F NMR (only compound 5l), besides elemental analysis. In addition, molecular binding of these compounds to the human methionine aminopeptidase 2 enzyme was performed using AutoDock 4.2, the software product of the research, computationally. All synthesized compounds were evaluated for cytotoxic effect against MDA-MB231 triple-negative breast cancer cell line by using WST-1 Cell Viability and Proliferation assay. Doxorubicin is in the anthracycline class and is an antineoplastic agent. It is used to provide regression in common neoplastic conditions such as breast carcinoma. Due to the cardiovascular side effects of doxorubicin, a combination study was conducted with the (& PLUSMN;)(R,S)-3-{1-[2-fluoro-(1,1 & PRIME;-biphenyl)-4-yl]ethyl}-4-methyl-5-{[2(trifluoromethyl)benzyl]thio}-4H-1,2,4-triazole (5l) with promising cytotoxic effects. As a result of the combination, it was shown as 7% MDA-MB231 cell viability. Therefore, based on the evaluations, a better cytotoxic effect was achieved with the 5l combination depending on the low dose of doxorubicin.
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