Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/395
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Article Citation - Scopus: 1Targeting HDAC Enzymes by SAHA Enhances the Cytotoxic Effects of Cisplatin on Acute Myeloid Leukemia Cells(Ondokuz Mayis Universitesi, 2024) Şansaçar, Merve; Pekin, Özge; Gencer Akçok, Emel BaşakChemotherapy is a widely used therapeutic approach to combat hematopoietic malignancies such as acute myeloid leukemia (AML). Although cisplatin is known as the first-generation platinum-based chemotherapy inhibitor, the wide use of cisplatin eventually leads to drug resistance, which is the biggest impediment to cancer chemotherapy. Histone deacetylase enzyme (HDAC) inhibitors have the ability to induce cell cycle arrest and apoptosis in different types of cancer, which stands as a promising alternative for those cancer patients not appropriate for intensive chemotherapy. This study concluded that there was a significant decrease in the proliferation of MOLM-13 and MV4-11 FLT3-ITD+ AML cell lines with the increasing SAHA and cisplatin concentrations in 48 hours using MTT cell proliferation assay. Moreover, the combination of SAHA and cisplatin led to a reduction in the proliferation of both cell lines correlated with the synergistic effect of the two drugs depending on the combination index (CI). Furthermore, investigating apoptosis for combined administration resulted in increased induction of apoptosis by Annexin-V/PI double staining. In conclusion, although additional studies are needed to fully elucidate the molecular mechanism underlying this combination, we propose a new approach to targeting AML, as AML increases over time with drug resistance and the consequent year-on-year increase in patient mortality. © 2025 Elsevier B.V., All rights reserved.Article Citation - WoS: 7Citation - Scopus: 8Synergistic Effect of Organic Acid on the Dissolution of Mixed Nickel-Cobalt Hydroxide Precipitate in Sulphuric Acid Solution(Edp Sciences S A, 2019) Kursunoglu, Sait; Kursunoglu, SaitThe synergistic effect of an organic acid on the dissolution of nickel and cobalt from a mixed nickel-cobalt hydroxide precipitate (MHP) in sulphuric acid solution was studied. The effects of sulphuric acid concentration, the type of organic acid, leaching time, leaching temperature and stirring speed on the dissolution of the metals were experimentally investigated. It was observed that there is no beneficial effect of leaching temperature and stirring speed on the dissolution of the metals from the used MHP product which contains 37.7% Ni, 2.1% Co and 5.6% Mn. It was found that citric acid was more effective than oxalic acid for the dissolution of nickel and manganese, whereas oxalic acid was more effective than citric acid for the dissolution of cobalt. The addition of oxalic acid into the leaching system, however, affected the dissolution of nickel negatively because nickel precipitate as nickel oxalate. Therefore, the use of citric acid as synergist for sulphuric acid leaching of MHP product is more promising. After 60 min of leaching, 90.9% Ni, 84.2% Co and 98.1% Mn were dissolved under the following conditions: 0.75 M sulphuric acid, 2 g citric acid, 1/10 solid-to-liquid ratio, 400 rpm stirring speed and 30 degrees C temperature. The experimental results demonstrate that the addition of citric acid as a synergist for sulphuric acid leaching of a MHP product provides beneficial effect for the dissolution of nickel, cobalt and manganese.