DSpace Arşivi :: by Yazar "Hatipoğlu, Abdulkerim" değerine göre listeleniyor

Yazar "Hatipoğlu, Abdulkerim" seçeneğine göre listele

Listeleniyor 1 - 12 / 12

Anticancer Activities of Zinc Oxide Nanoparticles (ZnONPs) Synthesized from Mentha longifolia L. Leaf Extract
(2024) İpek, Polat; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Baran, Ayşe
Recently, there has been a remarkable increase in cancer and cancer-related deaths. In this study, the impacts of zinc oxide nanoparticles (ZnONPs) produced from the aqueous leaf extract of Mentha longifolia L. (ML) on ovary adenocarcinoma (OVCAR-3), colorectal carcinoma (HCT-116), and healthy retinal pigment epithelial cell (RPE-1) lines were investigated. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test was performed to discover its antiproliferative properties. As a result of the application of ML-ZnONPs on RPE-1, OVCAR-3, and HCT-116 cell lines at doses (µg/mL) of 250, 500, and 1000 for 24 hours, the viability rates (%) in the cell lines were 18.73-30.56, 21.98-28.76, and 27.27-40.93, respectively. In the 48-hour application, the viability rates (%) of the same cells were between 29.51-46.83, 32.49-40.81, and 46.82-44.37, respectively. The MTT test revealed that ML-ZnONPs strongly suppressed the growth of RPE-1, OVCAR-3, and HCT-116 cell lines. The test showed that the effect of dose increase and time on the viability of both cancer cell lines was negative.
Anticancer Activities of Zinc Oxide Nanoparticles (ZnONPs) Synthesized from Mentha longifolia L. Leaf Extract
(Iğdır Üniversitesi, 2024) İpek, Polat; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Baran, Ayşe
Recently, there has been a remarkable increase in cancer and cancer-related deaths. In this study, the impacts of zinc oxide nanoparticles (ZnONPs) produced from the aqueous leaf extract of Mentha longifolia L. (ML) on ovary adenocarcinoma (OVCAR-3), colorectal carcinoma (HCT-116), and healthy retinal pigment epithelial cell (RPE-1) lines were investigated. The MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test was performed to discover its antiproliferative properties. As a result of the application of ML-ZnONPs on RPE-1, OVCAR-3, and HCT-116 cell lines at doses (µg/mL) of 250, 500, and 1000 for 24 hours, the viability rates (%) in the cell lines were 18.73-30.56, 21.98-28.76, and 27.27-40.93, respectively. In the 48-hour application, the viability rates (%) of the same cells were between 29.51-46.83, 32.49-40.81, and 46.82-44.37, respectively. The MTT test revealed that ML-ZnONPs strongly suppressed the growth of RPE-1, OVCAR-3, and HCT-116 cell lines. The test showed that the effect of dose increase and time on the viability of both cancer cell lines was negative.
Biosynthesis of silver nanoparticles from Arum dioscoridis plant leaf aqueous extract: anticancer and antimicrobial properties
(Gültekin ÖZDEMİR, 2023) İpek, Polat; Baran, Mehmet Fırat; Yıldız, Reşit; Hatipoğlu, Abdulkerim
This study was carried out to synthesize silver nanoparticles (AgNPs) from Arum dioscoridis (AD) leaf extract and to investigate the cytotoxic and antipathogenic effects of them. The plant material had a reducing and stabilizing effect on the synthesized nanomaterial. During the plant-mediated synthesis of nanomaterials, no substances that would cause environmental pollution were used. For the structural characterization of AD-AgNPs, Ultraviolet-visible (UV-vis) Spectroscopy, Field Emission Scanning Electron Microscopy (FE-SEM), Electron Dispersive X-ray (EDX) Spectroscopy, Fourier Transform Infrared (FT-IR) Spectroscopy, Transmission Electron Microscopy (TEM), X-ray Diffractometer (XRD), Atomic Force Microscopy (AFM) and Zetasizer analyses were performed. The produced AgNPs showed maximum surface plasmon resonance at 431.67 nm and had mostly spherical morphology. The zeta potential value of the nanomaterial was -9.76 mV and the average powder crystal size was 31.48 nm. The minimum inhibitory concentration (MIC) values (mg/L) of AD-AgNPs on Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, and Candida albicans were 0.25, 2.00, 0.125, 4.00, and 1.00, respectively. After 24 and 48 hours of application by MTT [3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolium bromid] assay, the half-maximal inhibitory concentrations (IC50: μg/mL) of AD-AgNPs on human colon adenocarcinoma cell (CACO-2), human breast cancer cell (MCF-7), glioblastoma multiforme cell (T98-G), and healthy human umbilical vein endothelial cell (HUVEC) lines were determined as 2.977, 2.801, 5.694, 4.392; 2.115, 2.300, 2.612, 4.091, respectively.
Cytotoxic potential of selenium nanoparticles (SeNPs) derived from leaf extract of Mentha longifolia L.
(2024) İpek, Polat; Baran, Ayşe; Hatipoğlu, Abdulkerim; Baran, Mehmet Fırat
The search for alternative methods in cancer treatments has been going on for many years. In the current study conducted for this purpose, selenium nanoparticles (ML-SeNPs) were produced from the aqueous leaf extract of Mentha longifolia L. easily and inexpensively, without harming the environment. The anticancer potential of ML-SeNPs on glioblastoma cell (U373), osteosarcoma cell (U2OS), and healthy retinal pigment epithelial cell (RPE-1) lines was determined by MTT (3-(4,5-dimetiltiazol-2-il)-2,5-difeniltetrazolium bromid) test. For the test, ML-SeNPs were applied at 100, 300, and 600 µg/mL levels and interaction was provided for 24 and 48 hours. The survival rates (%) in RPE-1, U373, and U2OS cell lines in the 24-hour application were 107.49-98.89, 97.66-86.82, and 87.81-83.37, respectively. The viability rates (%) of the cells in 48 hours of application were 72.27-87.39, 68.17-73.48, and 81.00-84.67, respectively. In general, it was discovered that the cytotoxic effect of ML-SeNPs on RPE-1, U373, and U2OS cell lines was greater at low doses and increased over time. In-vivo studies that support the antiproliferative action of ML-SeNPs may boost the prospect of using them as therapeutic agents in potential cancer treatment procedures in the following years.
Determination of aflatoxin M1 levels by elisa method in örgü (Knitted) cheese produced by traditional methods in Diyarbakır, Turkey
(Dicle Üniversitesi Fen Bilimleri Enstitüsü, 2019) Yeşil, Ömer Faruk; Hatipoğlu, Abdulkerim; Vural, Aydın; Erkan, Mehmet Emin; Yıldız, Abdunnasir
In this study, the contamination levels of Aflatoxin M1 were determined on 184 Diyarbakır Örgü Cheese (DÖC) samples between May and December 2013 were taken from randomly selected markets of Diyarbakır centrum by ELISA method. Since there is only one study about the presence of AFM1 in DÖC, the results were mostly compared with other types of cheese. On the other hand, results of the study were compared with the European Commission’s AFM1 level. The average AFM1 values of the samples were determined as 167.58 ng/kg. The minimum and maximum AFM1 values were detected as 50 and 800 ng/kg, respectively. The number of samples exceeding the limit specified for AFM1 in the European Commission are 32 (17.39%) samples. AFM1 contamination levels of 53 (28.80%), 73 (39.67%) and in 26 (14.13%) samples were determined as 51-250 ng/kg, 51- 150 ng/kg and 0-50 ng/kg, respectively. The results of the analysis show that the AFM1 levels of the DÖC offered for sale at different points in Diyarbakır have a potential risk for consumers.
Green synthesis and evaluation of antipathogenic, antioxidant, and anticholinesterase activities of gold nanoparticles (Au NPs) from Allium cepa L. peel aqueous extract
(Springer Science and Business Media, 2023) İpek, Polat; Baran, Mehmet Fırat; Baran, Ayşe; Hatipoğlu, Abdulkerim; Keskin, Cumali; Yıldıztekin, Mahmut
Gold nanoparticles (Au NPs) have potentially therapeutic properties as they are synthesized via biomolecules as reducing and stabilizing agent(s). The aim of this study is to develop an easy and eco-friendly method for the synthesis of Au NPs using extracts from the Allium cepa (AC) red peel (skin) extract and investigate the antibacterial and antioxidant activity and also inhibitory effects on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes. UV–Vis peak at ~ 564 nm confirmed the Au NPs absorbance. TEM images revealed the formation of Au NPs with mostly spherical shapes and sizes between 6.08 and 54.20 nm. FTIR analysis confirmed the important biological compounds responsible for the reduction of gold. The strong absorption property of Au NPs was studied by EDX. The produced Au NPs demonstrated significant antibacterial and antifungal activity against the bacterial and fungal strains tested, as well as efficient inhibitory activity against both AChE and BChE enzymes. The highest antimicrobial activities were found against Staphylococcus aureus (0.06° mg/ml) and Candida albicans (0.06° mg/ml). The antioxidant test findings revealed that AC-Au NPs had lesser activity when compared to normal antioxidants. The Au NPs showed excellent inhibitory efficacy against AChE and BChE. The proposed green technique could encourage the innocuous generation of Au NPs, implying therapeutic possibilities.
Green synthesis of silver nanoparticles based on the Raphanus sativus leaf aqueous extract and their toxicological/microbiological activities
(Springer Heidelberg, 2023) Hatipoğlu, Abdulkerim; Baran, Ayşe; Keskin, Cumali; Baran, Mehmet Fırat; Eftekhari, Aziz; Omarova, Sabina; Janas, Dawid
Silver nanoparticles (AgNPs) have several uses. Many scientists are working on producing AgNPs from plant extracts for use as biomedicines against drug-resistant bacteria and malignant cell lines. In the current study, plant-based AgNPs were synthesized using Raphanus sativus L. (RS) leaf aqua extract. Different concentrations of AgNO3 were used to optimize the synthesis process of RS-AgNPs from the aqueous leaf extract. Energy-dispersive X-ray analysis (EDX), transmission electron microscopy (TEM), scanning electron microscopy (SEM), atomic force microscope (AFM), and UV-vis spectroscopy were used to analyze the generated materials. Furthermore, to evaluate the biological properties of the obtained materials, Bacillus subtilis (B. subtilis), Pseudomonas aeruginosa (P. aeruginosa), Staphylococcus aureus (S. aureus), Escherichia coli (E. coli), and Candida albicans (C. albicans) pathogen strains were used for the minimum inhibitory concentration (MIC) assays. Subsequently, healthy cell lines (human dermal fibroblast (HDF)) and cancerous cell lines (glioma/U118, Ovarian/Skov-3, and colorectal adenocarcinoma/CaCo-2) were engaged to determine the cytotoxic effects of the synthesized NPs. The cytotoxic and anti-pathogenic potential of AgNPs synthesized by the proposed green approach was investigated. The results were encouraging compared to the standards and other controls. Plant-based AgNPs were found to be potential therapeutic agents against the human colon cancer cell (CaCo-2) and showed strong inhibitory activity on Candida albicans and Staphylococcus aureus growth. The RS-AgNPs generated have highly effective antimicrobial properties against pathogenic bacteria. Our findings also show that green RS-AgNPs are more cytotoxic against cancerous cell lines than normal cell lines. Synthesized nanoparticles with desirable morphology and ease of preparation are thought to be promising materials for antimicrobial, cytotoxic, and catalytic applications.
Green synthesis of silver nanoparticles derived from papaver rhoeas L. Leaf Extract: Cytotoxic and antimicrobial properties
(Multidisciplinary Digital Publishing Institute (MDPI), 2023) İpek, Polat; Yıldız, Reşit; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Baran, Ayşe; Sufianov, Albert; Beylerli, Ozal
In the last few decades, the search for metal nanoparticles as an alternative to cancer treatments and antibiotics has increased. In this article, the spectroscopic (ultraviolet–visible (UV-vis), electron-dispersing X-ray (EDX), and Fourier transform infrared (FT-IR)), microscopic (field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), and atomic force microscope (AFM)), structural (X-ray diffractometer (XRD) and zetasizer), and analytic (thermogravimetric/differential thermal analyzer (TGA-DTA)) characterization of the silver nanoparticles (AgNPs) produced from Papaver rhoeas (PR) L. leaf extract are presented. PR-AgNPs are generally spherical and have a maximum surface plasmon resonance of 464.03 nm. The dimensions of the manufactured nanomaterial are in the range of 1.47–7.31 nm. PR-AgNPs have high thermal stability and a zeta potential of −36.1 mV. The minimum inhibitory concentration (MIC) values (mg L−1) of PR-AgNPs on Staphylococcus aureus, Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, and Candida albicans are 1.50, 0.75, 3.00, 6.00, and 0.37, respectively. In the study, the cytotoxic and proliferative effects of PR-AgNPs using the MTT (3-(4,5-dimethylthiazol-2-yl)-diphenyltetrazolium bromide) method on various cancer cell lines (CACO-2 (human colon adenocarcinoma cell), MCF-7 (human breast cancer cell), T98-G (glioblastoma multiforme cell), and healthy HUVEC (human umbilical vein endothelial cell)) cell lines are presented. After 24 and 48 h of the application, the half-maximum inhibitory concentration (IC50) values (μg mL−1) of PR-AgNPs on HUVEC, CACO-2, MCF-7, and T98-G lines are 2.365 and 2.380; 2.526 and 2.521; 3.274 and 3.318; 3.472 and 3.526, respectively. Comprehensive in vivo research of PR-AgNPs is proposed to reveal their potential for usage in sectors such as nanomedicine and nanochemistry.
Green synthesis, characterization of gold nanomaterials using gundelia tournefortii leaf extract, and determination of their nanomedicinal (Antibacterial, antifungal, and cytotoxic) potential
(Hindawi LTD, 2022) Keskin, Cumali; Baran, Ayşe; Baran, Mehmet Fırat; Hatipoğlu, Abdulkerim; Adican, Mehmet Tevfik; Atalar, Mehmet Nuri; Yavuz, Ömer; Kandemir, Sevgi İrtegün
Introduction. Fighting against cancer and antibiotic resistance are important challenges of healthcare systems, and developing new treatment methods has become the most concentrated area of researchers. Method and Materials. Green synthesis, characterization, and some biological activities of gold nanomaterials (AuNPs) obtained with Gundelia tournefortii (kenger) leaf extract were investigated in this study. Fourier scanning electron microscope, UV-visible spectrophotometer, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectrophotometer, X-ray diffraction diffractometer, transmission electron microscope, and Zetasizer instrument data were used to elucidate the structures of nanoparticles. Results. The maximum surface plasmon resonance was observed at 532.15 nm after 1 hour. With the powder XRD model, the mean cubic crystallite size was determined as 23.53 nm. It was observed that the shapes of the obtained AuNPs were spherical, and the dimensions were 5-40 nm and hexagonal. Surface charges (-27 mV) and average size (365.3 nm) of gold nanoparticles were measured with a zeta analyzer. Conclusion. The suppressive effects of AuNPs on the growth of pathogenic microorganisms and healthy and cancer cell lines were determined using the MIC and MTT methods, respectively.
Investigation of antimicrobial and cytotoxic properties and specification of silver nanoparticles (AgNPs) derived from cicer arietinum L. green leaf extract
(Frontiers Media SA, 2022) Baran, Ayşe; Baran, Mehmet Fırat; Keskin, Cumali; Hatipoğlu, Abdulkerim; Yavuz, Ömer; Kandemir, Sevgi İrtegün
Using biological materials to synthesize metallic nanoparticles has become a frequently preferred method by researchers. This synthesis method is both fast and inexpensive. In this study, an aqueous extract obtained from chickpea (Cicer arietinum L.) (CA) leaves was used in order to synthesize silver nanoparticles (AgNPs). For specification of the synthesized AgNPs, UV-vis spectrophotometer, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), electron dispersive X-ray (EDX), and zeta potential (ZP) analyses data were used. Biologically synthesized AgNPs demonstrated a maximum surface plasmon resonance of 417.47 nm after 3 h. With the powder XRD model, the mean crystallite dimension of nanoparticles was determined as 12.17 mm with a cubic structure. According to the TEM results, the dimensions of the obtained silver nanoparticles were found to be 6.11-9.66 nm. The ZP of the electric charge on the surface of AgNPs was measured as -19.6 mV. The inhibition effect of AgNPs on food pathogen strains and yeast was determined with the minimum inhibition concentration (MIC) method. AgNPs demonstrated highly effective inhibition at low concentrations especially against the growth of B. subtilis (0.0625) and S. aureus (0.125) strains. The cytotoxic effects of silver nanoparticles on cancerous cell lines (CaCo-2, U118, Sk-ov-3) and healthy cell lines (HDF) were revealed. Despite the increase of AgNPs used against cancerous and healthy cell lines, no significant decrease in the percentage of viability was detected.
A research on the determination of aflatoxin M1 levels in milk and dairy products for sale in Diyarbakır by ELISA
(Erzincan Üniversitesi Fen Bilimleri Enstitüsü, 2019) Yeşil, Ömer Faruk; Hatipoğlu, Abdulkerim; Yıldız, Abdunnasır; Vural, Aydın; Erkan, Mehmet Emin
In this study, the contamination levels of Aflatoxin M1 of 248 sterilized milk, Beyaz, Cecil, Cokelek, Cream,Lor, Van Otlu (herbed), Van Otlu Lavash Cheese and butter samples randomly obtained from selected marketand supermarkets from Diyarbakır province center were determined by ELISA method. The average AFM1contamination value of the cheese samples investigated was 138.65 ng/kg; while the minimum and maximumvalues were 50 and 595.31 ng/kg, respectively. On the other hand, the average AFM1 value of 13 sterilized milksamples was 52.59 ng/kg; minimum and maximum values were determined as 25.97 and 80.0 ng/kg,respectively. In addition, the average AFM1 value of 18 butter samples was 97.54 ng/kg; the minimum andmaximum values were calculated as 50 and 308.13 ng/kg. In the study, the level of AFM1 contamination in the26 samples of cheese samples were exceeded the limits set by the European Commission for AFM1. In terms ofTurkish Food Codex, only 2 cheese samples exceeded the AFM1 tolerance limit. According to the study, thelevel of AFM1 contamination in the 7 milk samples and 15 butter samples exceeded both the EuropeanCommission and Turkish Food Codex AFM1 tolerance limit.
The Characterization of Silver Nanoparticles Synthesized From Prunus spinosa Fruit and Determination of Antimicrobial Effects on Some Food Pathogens
(RDCONF, 2021) Atalar, Mehmet Nuri; Baran, Ayşe; Hatipoğlu, Abdulkerim; Baran, M.firat; Yavuz, Ömer; Aktepe, Necmettin; Keskin, Cumali
Bu çalışmada, gümüş nanopartiküller (AgNP'ler) Prunus spinosa (PS) meyve özütü kullanılarak kolay, düşük maliyetli ve çevre dostu bir şekilde sentezlendi. Ultraviyole (UV)-görünür Spektrofotometre analiz verilerine göre, nanokristaller 438.3 nm'de karakteristik bir tepe noktası gösterdi. Alan Emisyon Taramalı Elektron Mikroskobu (FE-SEM), Transmisyon Elektron Mikroskobu (TEM) ve Atomik Güç Mikroskopisi (AFM) analizleri, biyosentezlenen AgNP'lerin morfolojik yapılarının küresel olduğunu ortaya koydu. XRD analizi sonuçlarına göre AgNP'lerin kristal yapılarının kübik olduğu belirlendi. Nanopartiküllerin boyutu, Debye-Scherrer denklemi ile 29,34 nm olarak hesaplandı. Sentezlenen nanomalzemenin zeta boyutu 117.4 nm olarak ölçülmüştür. AgNP’lerin gıda patojenleri olan Bacillus subtilis, Pseudomonas aeruginosa, Staphylococcus aureus ATCC 29213, Escherichia coli ATCC25922 ve Candida albicans üzerindeki inhibisyon etkileri Minimum İnhibitör Konsantrasyon (MİK) yöntemiyle ortaya konuldu.

Yazar "Hatipoğlu, Abdulkerim" seçeneğine göre listele

Sayfa Başına Sonuç

Sıralama seçenekleri