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    p(thyme oil) and p(clove oil) organo-particles with biocompatible, anticancer, antioxidant, and antibacterial properties against Capan-1 and L-929 cells
    (Wiley, 2024) Alpaslan, Duygu; Dudu, Tuba Ersen; Bozer, Büşra Moran; Aktaş, Nahit; Türk, Mustafa
    The synthesis of p(ClO) and p(TO) organo-particles from clove oil and thyme oil is the first in the literature. The particles were tested against the L-929 cell line for cell viability/cytotoxicity. The anticancer activity was studied against the Capan-1 pancreatic cancer cell line. p(ClO) and p(TO) organo-particles were featured by thermogravimetry (TGA), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), particle size (DLS), and particle charge (zeta potential, Zeta) analyses. Antioxidant, biocompatible, antimicrobial, and in vitro cytotoxicity specialties were investigated. p(ClO) and p(TO) organo-particles were found to be effective on the L-929 fibroblast cell line and Capan-1 pancreatic cancer cell line in research on Capan-1 and L-929 cell lines. Additionally, it was shown that large dosages of p(ClO) organo-particles were not hazardous to L-929 cell lines. A difference was found between the rates of cell viability and apoptosis and necrosis when the MTT study findings of p(ClO) and p(TO) organo-particles were studied in Capan-1 cell line. The p(TO) organo-particle had the highest % apoptosis rate. At the 100 g mL(-1) concentration, the fibroblast cell viability of p(ClO) and p(TO) organo-particles was 176.46% and 107.78%, respectively. The IC50 value derived for the decrease in viability was determined as (2.22 mg mL(-1)) and it was calculated that it would kill the pancreatic cancer cells by 50% when doxorubicin and p(ClO) were administered combined.
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    Spectral analysis and biological activity assessment of silver doped hydroxyapatite
    (Taylor & Francis Ltd, 2021) Erdem, Ümit; Bozer, Büşra Moran; Turkoz, Mustafa B.; Metin, Ayşegül Ülkü; Yıldırım, Gürcan; Türk, Mustafa; Nezir, Saffet
    In this study, the hydroxyapatite biomaterials are produced by the precipitation method and the role of silver doping within the different molar ratios of 2.0, 5.0, and 10.0% are investigated with some fundamental analysis, including powder XRD, SEM, EDS, FTIR, Raman, and material densities. In vitro biocompatibility assessment is conducted with cytotoxicity and agar diffusion tests. Moreover, genotoxicity tests determine whether the biomaterials produced cause the mutations or not. In addition, a hemolytic effect test examines the variation of hemolytic behavior of compounds. Also, the cell migration experiments inspect the influence of silver ion levels in biomaterials on many biological processes. The experimental results reveal that the honeycomb-patterned morphological structures are obtained for all the products. FTIR and Raman analyses reveal that the dramatic changes in the characteristic functional group peaks are obtained with the increment in the amount of silver ions. The experimental parts related to the biocompatibility assessment of the study show that there seems to be deterioration in biocompatibility as the silver ion-doping level increases in the system. To sum up, the ideal doping value for bone tissue engineering applications is found to be 2%.
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    Synthesis of biocompatible Ti-6Al-4V composite reinforced with ZrO2 and bioceramic produced by powder metallurgy: Morphological, structural, and biocompatibility analysis
    (Wiley, 2024) Pul, Muharrem; Erdem, Ümit; Bozer, Büşra Moran; Şimşek, Tuncay; Yılmazel, Rüstem; Erten, Mustafa Yasin
    In this experimental study, the initial phase involved preparing composite structures with various mix ratios using the Ti-6Al-4V alloy, widely used in clinical applications, in conjunction with ZrO2 and hydroxyapatite (HA) synthesized via the precipitation method, employing powder metallurgy techniques. Subsequently, the microstructures of the resultant hybrid composite materials were imaged, and x-ray diffraction (XRD) phase analyses were conducted. In the final phase of the experimental work, tests were performed to determine the biocompatibility properties of the hybrid composites. For this purpose, cytotoxicity and genotoxicity assays were carried out. The tests and examinations revealed that structures compatible both morphologically and elementally were obtained with no phase transformations that could disrupt the structure. The incorporation of ZrO2 into the Ti-6Al-4V alloy was observed to enhance cell viability values. The value of 98.25 +/- 0.42 obtained by adding 20% ZrO2 gave the highest cell viability result. The addition of HA into the hybrid structures further increased the cell viability values by approximately 10%. All viability values for both HA-added and HA-free groups were obtained above the 70% viability level defined in the standard. According to the genotoxicity test results, the highest cytokinesis-block proliferation index values were obtained as 1.666 and 0.620 in structures containing 20% ZrO2 and 10% ZrO2 + 10% HA, respectively. Remarkably, all fabricated composite and hybrid composite materials surpassed established biocompatibility standards and exhibited nontoxic and nongenotoxic properties. This comprehensive study contributes vital insights for future biomechanical and other in vitro and in vivo experiments, as it meticulously addresses fundamental characterization parameters crucial for medical device development.