Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/395
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Article Citation - WoS: 8Citation - Scopus: 9Synthesis of Benzotriazole Functionalized ZIF-8 by Postsynthetic Modification for Enhanced CH4 and CO2 Uptakes(Elsevier, 2022-08) Erkartal, Mustafa; Incekara, Kaan; Sen, UnalIn this work, a series of functionalized ZIF-8 were synthesized via incorporation of benzotriazole ligands into the framework with a post-synthetic method. The crystal structure and porosity were preserved for all functionalized samples. Although a relatively low percentage of ligand exchange (approximately 10-22%) was observed due to steric and kinetic effects, a remarkable improvement was found in CO2 and CH4 uptake capacities due to the incorporation of more polar N sites into the structure and the change in pore size of the frameworks. The resulting ZIF-8-S5 exhibited 45.17(CO2) and 15.08 (CH4) cm(3) g(-1) at 273 K under 1.2 bar, which corresponds to an enhancement of 20 and 35% compared to pristine ZIF-8. Further, all functionalized samples showed the significant improvement of selective CO2 over N-2.Article Citation - WoS: 13Citation - Scopus: 15Prevention of Cisplatin-Induced Nephrotoxicity by Kidney-Targeted siRNA Delivery(Elsevier, 2022-11) Aydin, Erkin; Cebeci, Aysun; Lekesizcan, AycaCisplatin is a potent and widely used chemotherapy agent, however, nephrotoxicity limits its use. Many patients need to pause or withdraw from chemotherapy to prevent acute kidney injury. To prevent cisplatin damage, we designed chitosan/siRNA nanoparticleswhich are nontoxic and are readily taken up by HEK293 cells. The nanoparticles contained siRNA against cationic membrane transport (OCT1&2) and apoptosis related proteins (p53, PKC8, and gamma GT). In mice treated with cisplatin, serum creatinine levels increased from 15 to 88 mg/dL and blood urea nitrogen levels increased from 0.25 to 1.7 mg/dL, however, siRNA nanoparticles significantly limited these levels to 30 mg/dL and 0.55 mg/dL, respectively. Western and IHC analyses showed lower p53, PKC8, and gamma GT expressions in siRNA treated mice. Histomorphological evaluation revealed high-level protection of kidney proximal tubules from cisplatin damage. Protein expressions and extent of kidney protection were directly correlated with number of siRNA applications. Our results suggest that this novel approach for kidney -targeted delivery of select siRNAs may represent a promising therapy for preventing cisplatin-induced nephro-toxicity. Furthermore, this or other similarly sized nanocarriers could potentially be utilized to passively target kidneys for diagnostic, protective, or treatment purposes.Book Part Citation - Scopus: 1Green Magnetic Nanoparticles: Recent Advancements in Synthesis and Characterization(Elsevier, 2024) Alrifai, Wardishan Kassem; Dadi, Seyma; Öçsoy, IsmailVarious types of nanoparticles (NPs) have been used in numerous scientific and industrial fields. Specifically, magnetic nanoparticles (MNPs) have drawn great attention in the last two decades concerning their synthesis, development, functionality, and relevant applications in a variety of areas including data storage, wastewater treatment, catalysis, bio-separation, and medicine. Several strategies have been developed to synthesize MNPs with various shapes, sizes, and compositions. The magnetization performance of MNPs is directly dependent on their high size, size distribution, composition, and crystallinity of the NP. The highly crystalline, monodisperse, and uniform MNPs called “high-quality MNPs” with unique magnetic properties have been synthesized by chemical synthesis method in the presence of hydrophobic surfactant (long hydrocarbon chain) and nonpolar solvents at high temperatures; however, these MNPs are toxic, insoluble in water and lack of use in all bio-related applications. To use these MNPs in biological applications, it is mandatory to apply a ligand exchange process to remove hydrophilic ligands and make MNPs soluble and stable in aqueous solutions. To address these issues, green synthesis methods using biomolecules, plant extracts, and microorganisms have been developed for the synthesis of biocompatible MNPs. This chapter aims to display recent developments in the synthesis of MNPs with green synthesis methods and in their characterization. © 2024 Elsevier B.V., All rights reserved.