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Comparative Study Of Electrochemical-Based Sensors And Immunosensors In Terms Of Advantageous Features For Detection Of Cancer Biomarkers, Göksu Özçeli̇kay, Ahmet Çeti̇nkaya, Sari̇ye İrem Kaya, Si̇bel Ayşil Özkan
Comparative Study Of Electrochemical-Based Sensors And Immunosensors In Terms Of Advantageous Features For Detection Of Cancer Biomarkers, Göksu Özçeli̇kay, Ahmet Çeti̇nkaya, Sari̇ye İrem Kaya, Si̇bel Ayşil Özkan
Turkish Journal of Chemistry
Cancer, becoming increasingly common globally, has a high mortality rate. Despite the much research on diagnosis and treatment methods, the benefits of technological developments, and newly developed sensor devices, cancer is still one of the leading causes of death worldwide. Early detection using powerful and noninvasive tools could be a future focus for prognosis and treatment follow-up. Therefore, electrochemical biosensors can be a strong choice for the detection of cancer biomarkers (such as alpha-fetoprotein, cytochrome c, prostate-specific antigen, myoglobin, carcinoembryonic antigen, alpha-fetoprotein, a cancer antigen, epidermal growth factor receptor, vascular endothelial growth factor, circulating tumor cell, and breast cancer antigen …
Fluid-Based Wearable Sensors: A Turning Point In Personalized Healthcare, Berfi̇n Vural, İnci̇ Uludağ, Bahar İnce, Canan Özyurt, Funda Öztürk, Mustafa Kemal Sezgi̇ntürk
Fluid-Based Wearable Sensors: A Turning Point In Personalized Healthcare, Berfi̇n Vural, İnci̇ Uludağ, Bahar İnce, Canan Özyurt, Funda Öztürk, Mustafa Kemal Sezgi̇ntürk
Turkish Journal of Chemistry
Nowadays, it has become very popular to develop wearable devices that can monitor biomarkers to analyze the health status of the human body more comprehensively and accurately. Wearable sensors, specially designed for home care services, show great promise with their ease of use, especially during pandemic periods. Scientists have conducted many innovative studies on new wearable sensors that can noninvasively and simultaneously monitor biochemical indicators in body fluids for disease prediction, diagnosis, and management. Using noninvasive electrochemical sensors, biomarkers can be detected in tears, saliva, perspiration, and skin interstitial fluid (ISF). In this review, biofluids used for noninvasive wearable sensor …
Green Catalyst For Clean Fuel Production Via Hydrodeoxygenation, Selva Bi̇lge Yücel, Yusuf Osman Donar, Samed Ergenekon, Beyza Özoylumlu, Ali̇ Sinağ
Green Catalyst For Clean Fuel Production Via Hydrodeoxygenation, Selva Bi̇lge Yücel, Yusuf Osman Donar, Samed Ergenekon, Beyza Özoylumlu, Ali̇ Sinağ
Turkish Journal of Chemistry
The development of new fuel sources to replace nonrenewable fossil fuels has received substantial attention due to the ongoing demand for fossil fuels. Biomass and raw waste materials are crucial sources to produce suitable alternative fuels instead of nonrenewable fuels and offer a greener approach. Therefore, improving the fuel properties of biooils produced from the thermochemical conversion of biomass and raw waste materials is critical as it is used as an alternative to nonrenewable fuel. Developing an economical and eco-friendly method to produce sustainable and renewable oil by improving biooil containing large amounts of phenolic compounds has become imperative. One …
Arsenic Speciation By Using Emerging Sample Preparation Techniques: A Review, Muhammad Saqaf Jagirani, Mustafa Soylak
Arsenic Speciation By Using Emerging Sample Preparation Techniques: A Review, Muhammad Saqaf Jagirani, Mustafa Soylak
Turkish Journal of Chemistry
Arsenic is a hazardous element that causes environmental pollution. Due to its toxicological effects, it is crucial to quantify and minimize the hazardous impact on the ecology. Despite the significant advances in analytical techniques, sample preparation is still crucial for determining target analytes in complex matrices. Several factors affect the direct analysis, such as trace-level analysis, advanced regulatory requirements, complexity of sample matrices, and incompatible with analytical instrumentation. Along with the development in the sample preparation process, microextraction methods play an essential role in the sample preparation process. Microextraction techniques (METs) are the newest green approach that replaces traditional sample …
Influence Of Soft Segment Structure, Hydrogen Bonding, And Diisocyanate Symmetry On Morphology And Properties Of Segmented Thermoplastic Polyurethanes And Polyureas, Emel Yilgör, İskender Yilgör
Influence Of Soft Segment Structure, Hydrogen Bonding, And Diisocyanate Symmetry On Morphology And Properties Of Segmented Thermoplastic Polyurethanes And Polyureas, Emel Yilgör, İskender Yilgör
Turkish Journal of Chemistry
A comprehensive review of the structure-morphology-property relations in segmented thermoplastic polyurethanes and polyureas (TPU) is provided. Special emphasis is given to the influence of the soft segment structure, polarity, and molecular weight, diisocyanate symmetry and the nature, extent, and strength of hydrogen bonding on the morphology and thermal and mechanical properties of TPUs. Experimental results obtained on composition-dependent TPU morphology and properties by various techniques were also compared by the morphology profiles generated by computational methods such as quantum mechanical calculations and molecular dynamics simulations
Metal-Organic Frameworks As Photocatalysts In Energetic And Environmental Applications, Eli̇f Özcan, Zeli̇ha Mermer, Yunus Zorlu
Metal-Organic Frameworks As Photocatalysts In Energetic And Environmental Applications, Eli̇f Özcan, Zeli̇ha Mermer, Yunus Zorlu
Turkish Journal of Chemistry
Metal-organic frameworks (MOFs) are an exciting new class of porous materials with great potential for photocatalytic applications in the environmental and energy sectors. MOFs provide significant advantages over more traditional materials when used as photocatalysts due to their high surface area, adaptable topologies, and functional ability. In this article, we summarize current developments in the use of MOFs as photocatalysts for a variety of applications, such as CO2 reduction, water splitting, pollutant degradation, and hydrogen production. We discuss the fundamental properties of MOFs that make them ideal for photocatalytic applications, as well as strategies for improving their performance. The opportunities …
Determination Of Ketamine Using Melamine-Modified Gold Nanoparticles, Güler Güneş, Zi̇ya Can, Ayşem Arda, Mustafa Reşat Apak
Determination Of Ketamine Using Melamine-Modified Gold Nanoparticles, Güler Güneş, Zi̇ya Can, Ayşem Arda, Mustafa Reşat Apak
Turkish Journal of Chemistry
Ketamine is used in medicine because of its anaesthetic and antidepressant effects at low doses. Unfortunately, due to its narcotic effect when used at high doses, its abuse among young people is increasing. It is also one of the most common drugs used in rape. Therefore, there is a need for fast and inexpensive tests that can be performed on-site. With the advancement of nanotechnology, nanoparticle-based approaches have found their place in selective analyses as in many fields. In the developed method, firstly gold nanoparticles were modified with melamine (AuNPs@Mel). Under optimized conditions, hydrogen bonds formed between ketamine and AuNPs@Mel …
Combination Of Smartphone Digital Image Colorimetry And Uv-Vis Spectrophotometry As Detection Systems With Solidified Floating Organic Drop Microextraction As Preconcentration Method For The Quantification Of Methyl Red In Wastewater Samples, Mi̇ray Bombom, Ayça Gi̇rgi̇n, Buse Tuğba Zaman, Fatma Turak, Sezgi̇n Bakirdere
Combination Of Smartphone Digital Image Colorimetry And Uv-Vis Spectrophotometry As Detection Systems With Solidified Floating Organic Drop Microextraction As Preconcentration Method For The Quantification Of Methyl Red In Wastewater Samples, Mi̇ray Bombom, Ayça Gi̇rgi̇n, Buse Tuğba Zaman, Fatma Turak, Sezgi̇n Bakirdere
Turkish Journal of Chemistry
In this study, a portable smartphone-based digital image colorimetric system (SDIC) was designed and integrated with a solidified floating organic drop microextraction method (SFODME) for the quantification of methyl red in textile wastewater samples. The RGB (red, green, and blue) data were evaluated for each captured image, and the green channel was selected for quantification due to its linear response for the analyte. Under optimal conditions, an acceptable linear range was recorded for the analyte. The proposed method recorded a limit of detection (LOD) value of 0.046 mg/L. The developed microextraction method was also combined with UVVis spectrophotometry, which recorded …
Sonophotochemical And Photochemical Efficiency Of Thiazole-Containing Metal Phthalocyanines And Their Gold Nanoconjugates, Nazli Farajzadeh, Hacer Yasemi̇n Yeni̇lmez, Göknur Yaşa Atmaca, Ali̇ Erdoğmuş, Zehra Bayir
Sonophotochemical And Photochemical Efficiency Of Thiazole-Containing Metal Phthalocyanines And Their Gold Nanoconjugates, Nazli Farajzadeh, Hacer Yasemi̇n Yeni̇lmez, Göknur Yaşa Atmaca, Ali̇ Erdoğmuş, Zehra Bayir
Turkish Journal of Chemistry
This study presents the synthesis of some metal {M = Zn(II), Lu(III), Si(IV)} phthalocyanines bearing chlorine and 2-(4-methylthiazol-5-yl) ethoxy groups at peripheral or axial positions. The newly synthesized metal phthalocyanines were characterized by applying FT-IR, 1 H NMR, mass, and UV-Vis spectroscopic approaches. Additionally, the surface of gold nanoparticles was modified with zinc(II) and silicon(IV) phthalocyanines. The resultant nanoconjugates were characterized using TEM images. Moreover, the effect of metal ions and position of substituent, and gold nanoparticles on the photochemical and sonophotochemical properties of the studied phthalocyanines was investigated. The highest singlet oxygen quantum yield was obtained for the lutetium …
Ph-Responsive Intermediary Layer Cross-Linked Micelles From Zwitterionic Triblock Copolymers And Investigation Of Their Drug-Release Behaviors, Agung Ari Wibowo, Vural Bütün
Ph-Responsive Intermediary Layer Cross-Linked Micelles From Zwitterionic Triblock Copolymers And Investigation Of Their Drug-Release Behaviors, Agung Ari Wibowo, Vural Bütün
Turkish Journal of Chemistry
ABC-type triblock copolymers, namely poly[(ethylene glycol)methyl ether]-block-poly(tert-butyl methacrylate)-block-poly[2-N-(diisopropylamino)ethyl methacrylate] (MPEG-b-PBuMA-b-PDPA), were first synthesized and then the middle blocks were successfully converted into poly(methacrylic acid) to obtain MPEG-b-PMAA-b-PDPA zwitterionic triblock copolymers. These block copolymers were soluble in water and formed micellar aggregates with complex cores via hydrogen bonding interactions between MPEG and PMAA blocks below pH 4.0. When the pH was between 5.0 and 7.0, due to charge compensation between partially protonated PDPA and partially ionized PMAA blocks, micelles with polyion complex cores were observed. If the solution pH was above 8.0, deprotonation of tertiary amine groups provided a hydrophobic character …
Cibacron Blue F3ga Ligand Dye-Based Magnetic Silica Particles For The Albumin Purification, Nurhak Tatar, Semra Akgönüllü, Handan Yavuz Alagöz, Adi̇l Deni̇zli̇
Cibacron Blue F3ga Ligand Dye-Based Magnetic Silica Particles For The Albumin Purification, Nurhak Tatar, Semra Akgönüllü, Handan Yavuz Alagöz, Adi̇l Deni̇zli̇
Turkish Journal of Chemistry
Dye-ligand affinity chromatography is among the increasingly popular affinity chromatography based on molecular recognition for the purification of albumin. This study focuses on the binding of Cibacron Blue F3GA ligand dye with magnetic silica particles and purification by separation. Mono-disperse silica particles with bimodal pore size distribution were employed as a high-performance adsorbent for human serum albumin (HSA) protein purification under equilibrium conditions. The synthesized ligand-dye affinity based magnetic silica particles were characterized by electron spin resonance, Fourier-transform infrared spectroscopy, scanning electron microscopy, vibrating sample magnetometer, elemental analysis, and dispersive X-ray analysis. The HSA purification performance of the proposed material …
Advanced Tetra Amino (Ata-100) Cobalt(Ii) Phthalocyanine-Based Metallo-Covalent Organic Polymer For Sensitively Detecting Volatile Organic Compounds, Günseli̇ Güney, Gülay Altindemi̇r Kaplan, Ci̇hat Taşaltin, İlke Gürol
Advanced Tetra Amino (Ata-100) Cobalt(Ii) Phthalocyanine-Based Metallo-Covalent Organic Polymer For Sensitively Detecting Volatile Organic Compounds, Günseli̇ Güney, Gülay Altindemi̇r Kaplan, Ci̇hat Taşaltin, İlke Gürol
Turkish Journal of Chemistry
The synthesis and characterization of a novel covalent organic polymer cobalt (II) phthalocyanine (ATA-100) including tetra amino group is described for the first time. This covalent organic polymer (COP) is characterized by FTIR, TGA, RAMAN, PXRD, and SEM-EDS. The developed sensor is tested for acetone, ethyl butyrate, n-hexane, chloroform, and n-butyraldehyde in a range of 80-10,900 ppm. ATA-100 showed the highest sensitivity for ethyl butyrate. The results have confirmed the possibility of utilizing ATA-100 COP-based surface acoustic wave (SAW) sensors for a wide variety of applications, including indoor air quality and environmental monitoring of volatile organic compounds (VOCs).
The Chemical And Electrochemical Stimuli Viologen Substituted Phthalocyanine With Tunable Optical Features1, Özge Di̇lara Ateş, Gülenay Tunç, Ahmet Şenocak, Burcu Dedeoğlu, Mehmet Menaf Ayhan, Ayşe Gül Gürek
The Chemical And Electrochemical Stimuli Viologen Substituted Phthalocyanine With Tunable Optical Features1, Özge Di̇lara Ateş, Gülenay Tunç, Ahmet Şenocak, Burcu Dedeoğlu, Mehmet Menaf Ayhan, Ayşe Gül Gürek
Turkish Journal of Chemistry
In this study, viologen-tetrasubstituted Zn(II) phthalocyanines (PcV1 and PcV2) were designed and synthesized to achieve the tunable optical features via redox-active viologen groups. Several parameters relevant to the evaluation of the tunable optical features have been investigated: UV-Vis, cyclic voltammetry (CV), EPR, square wave voltammetry (SWV), and theoretical analyses. The results showed that upon reductions and oxidations of viologen groups either chemically or electrochemically, the optical features of PcV1 and PcV2 change drastically with switchable processes. These outcomes indicate that achieving control over optical features of large organic chromophores such as Pc with our rational design can be used for …
Amplifying The Dielectric Constant Of Shellac By Incorporating Natural Clays For Organic Field Effect Transistors (Ofets), Sunwoo Kim, Cigdem Yumusak, Cristian-Vlad Irimia, Mateusz Bednorz, Esma Yenel, Mahmut Kuş, Ni̇yazi̇ Serdar Sariçi̇ftçi̇, Bong Sup Shim, Mihai Irimia
Amplifying The Dielectric Constant Of Shellac By Incorporating Natural Clays For Organic Field Effect Transistors (Ofets), Sunwoo Kim, Cigdem Yumusak, Cristian-Vlad Irimia, Mateusz Bednorz, Esma Yenel, Mahmut Kuş, Ni̇yazi̇ Serdar Sariçi̇ftçi̇, Bong Sup Shim, Mihai Irimia
Turkish Journal of Chemistry
We demonstrate in this work the practical use of uniform mixtures of a bioresin shellac and four natural clays, i.e. montmorillonite, sepiolite, halloysite and vermiculate as dielectrics in organic field effect transistors (OFETs). We present a thorough characterization of their processability and film forming characteristic, surface characterization, elaborate dielectric investigation and the fabrication of field effect transistors with two classic organic semiconductors, i.e. pentacene and fullerene C60. We show that low operating voltage of approximately 4 V is possible for all the OFETs using several combinations of clays and shellac. The capacitance measurements show an improvement of the dielectric constant …
Architecture Design Of Tio2 With Co-Doped Cds Quantum Dots Photoelectrode For Water Splitting, Fati̇h Tezcan, Abrar Ahmad, Gülfeza Kardaş
Architecture Design Of Tio2 With Co-Doped Cds Quantum Dots Photoelectrode For Water Splitting, Fati̇h Tezcan, Abrar Ahmad, Gülfeza Kardaş
Turkish Journal of Chemistry
Photoelectrochemical hydrogen production is a critical key to solving the carbon-zero goal of countries due to renewable sources of solar light and combustion products of hydrogen-only water. Here, an architecture design for an n-type nano rosettes-rod TiO2 (RT) surface using CdS and Co-doped CdS quantum dots (QDs) is carried out utilizing the SILAR (simple ionic layer adsorption and reaction) method. Furthermore, the photocatalytic behaviour of Co-doped CdS QDs SILAR cycles deposition is investigated in various cycles, including 5, 8, 10, and 12. The FESEM, Raman XRD, Uv-Vis spectrometer, and vibration modes are used to evaluate the photoelectrode surface structure, crystal …
A Facile Tert-Butyl Nitrite-Assisted Preparation Of Deamino Graphitic Carbon Nitride (Da-Gcn) As A Photocatalyst For The C-H Arylation Of Heteroarenes Using Anilines As Radical Source, Palani Natarajan, Begümhan Karapinar Koç, Önder Meti̇n
A Facile Tert-Butyl Nitrite-Assisted Preparation Of Deamino Graphitic Carbon Nitride (Da-Gcn) As A Photocatalyst For The C-H Arylation Of Heteroarenes Using Anilines As Radical Source, Palani Natarajan, Begümhan Karapinar Koç, Önder Meti̇n
Turkish Journal of Chemistry
In pristine graphitic carbon nitride (g-CN), amino groups often function as structural defects that trap photogenerated charges, resulting in low photocatalytic activity as well as reaction with nitrite, aldehyde, etc., ensuing in poor product yield. Without significantly altering the optical characteristics, the removal of amino groups is necessary to increase the photocatalytic activity and structural stability of pristine g-CN. The deamino graphitic carbon nitride (DA-gCN-5) was prepared by tert-butyl nitrite (TBN)- treatment, characterized and used as a photocatalyst for the radical C-H arylation of heteroarenes using anilines as radical source. Indeed, the photophysical characteristics of DA-gCN-5 and those of pristine …
Reducible Tungsten(Vi) Oxide-Supported Ruthenium(0) Nanoparticles: Highly Active Catalyst For Hydrolytic Dehydrogenation Of Ammonia Borane, Serdar Akbayrak, Yalçin Tonbul, Sai̇m Özkar
Reducible Tungsten(Vi) Oxide-Supported Ruthenium(0) Nanoparticles: Highly Active Catalyst For Hydrolytic Dehydrogenation Of Ammonia Borane, Serdar Akbayrak, Yalçin Tonbul, Sai̇m Özkar
Turkish Journal of Chemistry
Reducible WO3 powder with a mean diameter of 100 nm is used as support to stabilize ruthenium(0) nanoparticles. Ruthenium(0) nanoparticles are obtained by NaBH4 reduction of ruthenium(III) precursor on the surface of WO3 support at room temperature. Ruthenium(0) nanoparticles are uniformly dispersed on the surface of tungsten(VI) oxide. The obtained Ru0 /WO3 nanoparticles are found to be active catalysts in hydrolytic dehydrogenation of ammonia borane. The turnover frequency (TOF) values of the Ru0 /WO3 nanocatalysts with the metal loading of 1.0%, 2.0%, and 3.0% wt. Ru are 122, 106, and 83 min-1, respectively, in releasing hydrogen gas from …
A Multifunctional Thienothiophene Member: 4-Thieno[3,2-B]Thiophen-3-Ylbenzonitrile (4-Cnphtt), Recep İşçi̇, Turan Öztürk
A Multifunctional Thienothiophene Member: 4-Thieno[3,2-B]Thiophen-3-Ylbenzonitrile (4-Cnphtt), Recep İşçi̇, Turan Öztürk
Turkish Journal of Chemistry
Thieno[3,2-b]thiophene (TT) has been attracting significant attention in the field of organic electronics and optoelectronics. In this study, a useful building block of TT derivative 4-thieno[3,2-b]thiophen-3-ylbenzonitrile (4-CNPhTT), developed by our group and possessing a strong electron-withdrawing 4-CNPh moiety, is reviewed as it has been the source of the development of various organic electronic materials. Some optic and electronic properties are discussed based on electrochemical polymerization of 4-CNPhTT performed using cyclic voltammetry, and spectroelectrochemical measurements are conducted to investigate the optical variations of the polymer film upon doping. Moreover, 4-CNPhTT is clarified by scanning electron microscopy at different magnitudes ranging from …
Innovative Polymer Engineering For The Investigation Of Electrochemical Properties And Biosensing Ability, Sila Can Osmanoğullari, Sani̇ye Söylemez, Oğuzhan Karakurt, Şeri̇fe Özdemi̇r Hacioğlu, Ali̇ Çirpan, Levent Kami̇l Toppare
Innovative Polymer Engineering For The Investigation Of Electrochemical Properties And Biosensing Ability, Sila Can Osmanoğullari, Sani̇ye Söylemez, Oğuzhan Karakurt, Şeri̇fe Özdemi̇r Hacioğlu, Ali̇ Çirpan, Levent Kami̇l Toppare
Turkish Journal of Chemistry
Subtle engineering for the generation of a biosensor from a conjugated polymer with the inclusion of fluorine-substituted benzothiadiazole and indole moieties is reported. The engineering includes the electrochemical copolymerization of the indole-6-carboxylic acid (M1) and 5-fluoro-4,7-bis(4-hexylthiophen-2-yl)benzo[c][1,2,5]thiadiazole (M2) on the indium tin oxide and graphite electrode surfaces for the investigation of both their electrochemical properties and biosensing abilities with their copolymer counterparts. The intermediates and final conjugated polymers, Poly(M1) [P-In6C], Poly(M2) [P-FBTz], and copoly(M1 and M2) [P-In6CFBTz], were entirely characterized by 1 H NMR, 13C NMR, CV, UV-Vis-NIR spectrophotometry, and SEM techniques. HOMO energy levels of electrochemically obtained polymers were calculated …
Recommendations For Improving The Experimental Protocol For The Determination Of Photocatalytic Activity By Nitric Oxide Oxidation Measurements, Seli̇n Ernam, Zeynep Ece Akgül, Deni̇z Üner
Recommendations For Improving The Experimental Protocol For The Determination Of Photocatalytic Activity By Nitric Oxide Oxidation Measurements, Seli̇n Ernam, Zeynep Ece Akgül, Deni̇z Üner
Turkish Journal of Chemistry
The photocatalytic nitric oxide (NO) oxidation reaction is used as a standard diagnostic tool for photocatalytic activity according to the well-defined protocol described by ISO Standard 22197-1-2007. This protocol identifies the negative peak showing a NOx concentration drop during a gas flow switch from the calibration bypass to the reactor as adsorption of NOx on the surface. Evidence is provided for this first transient to be due to a dilution effect in the gas phase within the reactor. With proper models of residence time distribution analysis, this transient revealed the internal hydrodynamics and it can be used to determine the …
Current Developments In Surface Electromyography, Veysel Alcan, Murat Zi̇nnuroğlu
Current Developments In Surface Electromyography, Veysel Alcan, Murat Zi̇nnuroğlu
Turkish Journal of Medical Sciences
Background/aim: Surface electromyography (surface EMG) is a primary technique to detect the electrical activities of muscles through surface electrodes. In recent years, surface EMG applications have grown from conventional fields into new fields. However, there is a gap between the progress in the research of surface EMG and its clinical acceptance, characterized by the translational knowledge and skills in the widespread use of surface EMG among the clinician community. To reduce this gap, it is necessary to translate the updated surface EMG applications and technological advances into clinical research. Therefore, we aimed to present a perspective on recent developments in …
Effects Of Vitrification Solution Supplemented With Platelet-Rich Plasma In Rat Ovarian Tissue Cryopreservation, Ayli̇n Gökhan, Türker Çavuşoğlu, Kubi̇lay Doğan Kiliç, Cansin Şi̇ri̇n, Canberk Tomruk, Gürkan Yi̇ği̇ttürk, Oytun Erbaş, Eser Sözmen, Meral Baka
Effects Of Vitrification Solution Supplemented With Platelet-Rich Plasma In Rat Ovarian Tissue Cryopreservation, Ayli̇n Gökhan, Türker Çavuşoğlu, Kubi̇lay Doğan Kiliç, Cansin Şi̇ri̇n, Canberk Tomruk, Gürkan Yi̇ği̇ttürk, Oytun Erbaş, Eser Sözmen, Meral Baka
Turkish Journal of Medical Sciences
Background/aim: The subject of this study was to investigate the utility of platelet-rich plasma (PRP) in the cryopreservation process to reduce cryodamage and increase tissue viability. Materials and methods: Twenty-one female Wistar rats were randomly allocated to three groups. In Group 1 (G1), rats were not subjected to vitrification (n = 7). Group 2 (G2) was the vitrification group in which PRP was added to the basic vitrification solution (n = 7). Group 3 (G3) was the vitrification group in which fetal bovine serum was added to the basic vitrification solution (n = 7). Warmed tissues were evaluated with histochemical …
Acetone Extracts Of Berberis Vulgaris And Cornus Mas L. Induce Apoptosis In Mcf-7 Breast Cancer Cells, Burcu Uslu, Mustafa Yaman, Tuba Özdemi̇r Sanci, Mustafa Güngörmüş, Çağla Zübeyde Köprü, Fatma Esra Güneş
Acetone Extracts Of Berberis Vulgaris And Cornus Mas L. Induce Apoptosis In Mcf-7 Breast Cancer Cells, Burcu Uslu, Mustafa Yaman, Tuba Özdemi̇r Sanci, Mustafa Güngörmüş, Çağla Zübeyde Köprü, Fatma Esra Güneş
Turkish Journal of Medical Sciences
Background/aim: This study aimed to determine the proliferation and apoptotic effects of extracts from Cornus mas L. and Berberis vulgaris fruits on human breast cancer cells (MCF-7). Materials and methods: The Cornus mas L. and Berberis vulgaris fruits, which constitute the herbal material of the study, were turned into 80% acetone extract after washing. The total phenolic content in Berberis vulgaris fruit extracts was determined calorimetrically using Folin-Ciocalteu reagent. The spectrophotometric method was used to determine the total flavonoid amount of the extracts. In order to measure the antioxidant capacity of Cornus mas L. and Berberis vulgaris fruits and extracts, …
Recurrent Lower Urinary Tract Infections: More Than An Infection For Older Women, Sencer Gani̇dağli, Ercüment Öztürk, Zeynel Abi̇di̇n Öztürk
Recurrent Lower Urinary Tract Infections: More Than An Infection For Older Women, Sencer Gani̇dağli, Ercüment Öztürk, Zeynel Abi̇di̇n Öztürk
Turkish Journal of Medical Sciences
Background/aim: Older adults tend to have more urinary tract infections (UTIs). The frequency of recurrent lower urinary tract infections (rLUTIs) increases with age. rLUTIs are associated with long-term chronic effects on geriatric syndromes in older adults. We aimed to investigate possible risk factors that influence rLUTIs in older adults based on comprehensive geriatric assessment (CGA). Materials and methods: This cross-sectional study included 235 older adults admitted to Gaziantep University?s Geriatric Outpatient Clinic between June 1 and November 30, 2022. All patients underwent CGA. The Geriatric Depression Scale (GDS), the European Quality of Life-Five Dimension (EQ-5D) questionnaire, the Pittsburgh Sleep Quality …
The Effect Of Natural Surfactants On The Development Of Postoperative Intraabdominal Adhesion, Ahmet Gökhan Güler, Ali̇ Erdal Karakaya, Ahmet Burak Doğan, Abdulkadi̇r Yasi̇r Bahar, Sadik Yurttutan
The Effect Of Natural Surfactants On The Development Of Postoperative Intraabdominal Adhesion, Ahmet Gökhan Güler, Ali̇ Erdal Karakaya, Ahmet Burak Doğan, Abdulkadi̇r Yasi̇r Bahar, Sadik Yurttutan
Turkish Journal of Medical Sciences
Background/aim: The development of postoperative adhesion after abdominal surgery is sometimes a severe problem. Our study investigates the effectiveness of exogenous surfactant application in preventing adhesion development in the experimental adhesion model. Materials and methods: This randomized-controlled interventional study was carried out in the animal laboratory of Kahramanmaraş Sütçü İmam University between March 1 and March 31, 2020. An experimental intra-abdominal adhesion model was established in 24 adult female rats by cecal abrasion. Rats were randomly divided into four groups. Groups I, II, and III were taken intraperitoneally as beractant, poractant, and calfactant applied groups, respectively. Group IV was the …
Adjustable Bone Plate: From Bench To Operating Room, Gazi̇ Huri̇, Erdi̇ Özdemi̇r, Ömer Sunkar Bi̇çer, Pinar Huri̇, Sai̇t Polat, Tuğçe Sapmaz, Mahmut Nedi̇m Doral
Adjustable Bone Plate: From Bench To Operating Room, Gazi̇ Huri̇, Erdi̇ Özdemi̇r, Ömer Sunkar Bi̇çer, Pinar Huri̇, Sai̇t Polat, Tuğçe Sapmaz, Mahmut Nedi̇m Doral
Turkish Journal of Medical Sciences
Background/aim: We have designed an adjustable bone plate (ABP) which allows bone shortening and lengthening after fixation, which is a property not present in any of the plate systems available today. The aim of the current study was to examine the new ABP?s segmental bone transfer capability for the treatment of a segmental bone defect in an animal model. Materials and methods: Five sheep had ABPs attached to 10 of their tibias and bone defects of 15 mm in size were created. The pinion mechanism was moved with a manual screwdriver at a rate of 1mm/day for 15 days starting …
Androgen Receptor Contributes To Repairing Dna Damage Induced By Inflammation And Oxidative Stress In Prostate Cancer, Bi̇lge Debeleç Bütüner, Nurşah Ertunç Hasbal, Eli̇f İşel, Dirk Roggenbuck, Kemal Sami̇ Korkmaz
Androgen Receptor Contributes To Repairing Dna Damage Induced By Inflammation And Oxidative Stress In Prostate Cancer, Bi̇lge Debeleç Bütüner, Nurşah Ertunç Hasbal, Eli̇f İşel, Dirk Roggenbuck, Kemal Sami̇ Korkmaz
Turkish Journal of Biology
Background: Androgen deprivation therapy remains the first-line therapy option for prostate cancer, mostly resulting in the transition of the disease to a castration-resistant state. The lack of androgen signaling during therapy affects various cellular processes, which sometimes paradoxically contributes to cancer progression. As androgen receptor (AR) signaling is known to contribute to oxidative stress regulation, loss of AR may also affect DNA damage level and the response mechanism in oxidant and inflammatory conditions of the prostate tumor microenvironment. Therefore, this study aimed to investigate the role of AR and AR-regulated tumor suppressor NKX3.1 upon oxidative stress-induced DNA damage response (DDR) …
Evaluation Of The Effects Of Ghrelin And Metformin On Sperm Parameters, Testosterone Hormones, And Immunohistochemical And Immunofluorescent Markers In An Experimental Diabetes Model, Saadet Belhan, Zübeyi̇r Huyut, Serkan Yildirim, Özlem Ergül Erkeç, Uğur Özdek
Evaluation Of The Effects Of Ghrelin And Metformin On Sperm Parameters, Testosterone Hormones, And Immunohistochemical And Immunofluorescent Markers In An Experimental Diabetes Model, Saadet Belhan, Zübeyi̇r Huyut, Serkan Yildirim, Özlem Ergül Erkeç, Uğur Özdek
Turkish Journal of Veterinary & Animal Sciences
Testicular dysfunction, a severe secondary complication of diabetes, negatively affects reproductive health. Ghrelin is a peptide that plays a role in many metabolic events, such as stimulating growth hormones and regulating appetite, blood pressure, and reproduction. Metformin has antiinflammatory and antioxidant properties and is widely used to treat type 2 diabetes. Therefore, in this study, to investigate the effects of ghrelin and metformin on testicular function in experimental diabetic rats given streptozotocin, placed on a high-fat diet, and that had their sperm parameters evaluated, testosterone hormone, caspase 3 and iNOS expression, and histopathological examinations were performed. In total, 38 Wistar …
The Effect Of Using Different Litter Materials In Broiler Rearing On Performance, Carcass Yield, Antioxidant Status, Some Litter Parameters, And Coccidiosis Oocysts, Gökhan Şen, Mehmet Naci̇ Oktay, Şevket Evci̇, Sami̇ Gökpinar, Ali̇ Şenol
The Effect Of Using Different Litter Materials In Broiler Rearing On Performance, Carcass Yield, Antioxidant Status, Some Litter Parameters, And Coccidiosis Oocysts, Gökhan Şen, Mehmet Naci̇ Oktay, Şevket Evci̇, Sami̇ Gökpinar, Ali̇ Şenol
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the effects of various mixtures of different litter materials containing wood shaving and barley straw on body weight gain, feed consumption, feed efficiency, carcass yield, antioxidant state, litter quality, and coccidio oocysts in broilers rearing. For this purpose, a total of 120, 0-day-old Ross 308 broilers were assigned to 3 groups with 4 replicates. Wood shaving, barley straw, and wood shaving + barley straw group had 10 chicks in each replicate, a total of 40 chicks in each group. When the overall period of the study was examined, it was determined that …