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The Efficacy Of The 3-Dimensional Vibe-Caipirinha-Dixon Technique In The Evaluation Of Pancreatic Steatosis, Ural Koç, Gökhan Ocakoğlu, Oktay Algin
The Efficacy Of The 3-Dimensional Vibe-Caipirinha-Dixon Technique In The Evaluation Of Pancreatic Steatosis, Ural Koç, Gökhan Ocakoğlu, Oktay Algin
Turkish Journal of Medical Sciences
Background/aim: CAIPIRINHA is a new technique in abdominal imaging. Pancreatic steatosis (PS) is a subject of increasing scientific interest. The aim of this study was to investigate the efficacy of the isotropic 3D-VIBE- CAIPIRINHA -DIXON technique on a new generation 3-tesla MR unit in the evaluation of PS.Materials and methods: In this retrospective study, the imaging findings of 49 patients with PS and 41 control subjects were examined. The pancreas-to-spleen ratio (PSR), pancreas-to-muscle ratio (PMR), and pancreatic signal intensity index (PSII) were defined as 3 new parameters and these indexes were calculated from the in-phase/out of phase 3D-VIBE- CAIPIRINHA-DIXON images. …
Posterior Fossa Horns; A New Calvarial Finding Of Mucopolysaccharidoses With Well-Known Cranial Mri Features, Çağri Damar, Betül Emi̇ne Deri̇nkuyu, Muazzez Asburçe Bi̇ke Olgaç Kiliçkaya, Mehmet Öztürk, Çi̇ğdem Öztunali, Ayşe Gül Alimli, Öznur Leman Boyunaga, Murat Uçar, Fati̇h Süheyl Ezgü, Leyla Tümer, Alp Özgün Börcek, Ahmet Siğirci
Posterior Fossa Horns; A New Calvarial Finding Of Mucopolysaccharidoses With Well-Known Cranial Mri Features, Çağri Damar, Betül Emi̇ne Deri̇nkuyu, Muazzez Asburçe Bi̇ke Olgaç Kiliçkaya, Mehmet Öztürk, Çi̇ğdem Öztunali, Ayşe Gül Alimli, Öznur Leman Boyunaga, Murat Uçar, Fati̇h Süheyl Ezgü, Leyla Tümer, Alp Özgün Börcek, Ahmet Siğirci
Turkish Journal of Medical Sciences
Background/aim: Mucopolysaccharidoses (MPS) are a group of hereditary metabolic diseases. The aim of this study was to share the previously unreported calvarial finding of internal hypertrophy of the occipitomastoid sutures (IHOMS) together with some other well- known cranial MRI findings in this patient series. Materials and methods: A retrospective evaluation was conducted of 80 cranial MRIs of patients who had been diagnosed and followed up with MPS from 2008 to 2019 in our center. Of these patients, 11 had Hurler, 14 had Hunter, 24 had Sanfilippo, 15 had Morquio, 14 had Maroteaux-Lamy, and 2 had Sly disease. The cranial MRIs …
Comparison Of The Efficacy Between Bilateral Proximal Tubal Occlusion And Total Salpingectomy On Ovarian Reserve And The Cholinergic System: An Experimental Study, Remzi̇ Atilgan, Şehmus Pala, Tuncay Kuloğlu, Cengi̇z Şanli, Şeyda Yavuzkir, Zehra Sema Özkan
Comparison Of The Efficacy Between Bilateral Proximal Tubal Occlusion And Total Salpingectomy On Ovarian Reserve And The Cholinergic System: An Experimental Study, Remzi̇ Atilgan, Şehmus Pala, Tuncay Kuloğlu, Cengi̇z Şanli, Şeyda Yavuzkir, Zehra Sema Özkan
Turkish Journal of Medical Sciences
Background and aim: To compare the effects of bilateral proximal tubal occlusion and bilateral total salpingectomy on ovarian reserve and the cholinergic system via rat experiment. Materials and methods: Twenty-one adult female rats were randomly divided into the following three groups: G1 (n = 7), sham group; G2 (n = 7), bilateral total salpingectomy group; and G3 (n = 7), bilateral proximal tubal occlusion group. Four weeks later, the abdomen of the rats was opened. The right ovarian tissues were stored in 10% formaldehyde, whereas the left ovarian tissues were stored at ?80 °C in aluminum foil. Serum samples were …
The Effect Of Baicalein On Wnt/Ss-Catenin Pathway And Mir-25 Expression In Saos-2 Osteosarcoma Cell Line, Esra Örenli̇li̇ Yaylagül, Celal Ülger
The Effect Of Baicalein On Wnt/Ss-Catenin Pathway And Mir-25 Expression In Saos-2 Osteosarcoma Cell Line, Esra Örenli̇li̇ Yaylagül, Celal Ülger
Turkish Journal of Medical Sciences
Background/aim: Osteosarcoma is the most common primary bone malignancy that occurs frequently in children and adolescents. Baicalein, a flavonoid that has attracted great attention in recent years with its strong antitumor activity, shows a wide range of biological and pharmaceutical effects.MicroRNAs have been found to be involved in many critical processes in cancers. This study aimed to investigate the effect of baicalein and miR-25 on Wnt/ß-catenin signaling pathway of osteosarcoma cell line Saos-2. Materials and methods: Cell viability was assessed, and qRT-PCR and Western blot were performed to study the effects of baicalein on expression of Wnt/ß-catenin signaling pathway-realted genes …
Omics Era In Forensic Medicine: Towards A New Age, Ramazan Akçan, Burak Taşteki̇n, Mahmut Şeri̇f Yildirim, Hali̇t Canberk Aydogan, Necdet Sağlam
Omics Era In Forensic Medicine: Towards A New Age, Ramazan Akçan, Burak Taşteki̇n, Mahmut Şeri̇f Yildirim, Hali̇t Canberk Aydogan, Necdet Sağlam
Turkish Journal of Medical Sciences
Background/aim: Forensic medicine and sciences is a multidisciplinary branch of science, which frequently benefit from novel technologies. State of the art omics technologies have begun to be performed in forensic medicine and sciences, particularly in postmortem interval, intoxication, drugs of abuse, diagnosis of diseases and cause of death. This review aims to discuss the role and use of great omics (metabolomics, proteomics, genomics and transcriptomics) in forensic sciences, in detail. Materials and methods: A detailed review of related literature was performed, and studies were subdivided as per the type of omics.Results and conclusion: Omics seems as a revolutionary step in …
The Importance Of Quality And Accreditation In Health Care Services In The Process Ofstruggle Against Covid-19, Demet Gökmen Kavak, Ayşe Si̇bel Öksüz, Canan Cengi̇z, İbrahi̇m Hali̇l Kayral, Fi̇gen Çi̇zmeci̇ Şenel
The Importance Of Quality And Accreditation In Health Care Services In The Process Ofstruggle Against Covid-19, Demet Gökmen Kavak, Ayşe Si̇bel Öksüz, Canan Cengi̇z, İbrahi̇m Hali̇l Kayral, Fi̇gen Çi̇zmeci̇ Şenel
Turkish Journal of Medical Sciences
Background/aim: The aim of this research is to evaluate the relationship between the quality of health and accreditation standards with the Covid-19 process and to reveal the importance of quality and accreditation in health care in the process of combating coronavirus. Materials and methods: The relationship between hospital accreditation standards of Turkish Healthcare Quality and Accreditation Institute and the Covid-19 process was evaluated. The standards were analyzed within the framework of the technical guidance areas provided by the World Health Organization for countries for the Covid-19 process. Results: The standards were found to be 79,6% related to the Covid-19 process. …
Tetanus Vaccine During Pregnancy: Data Of A Tertiary Hospital In Turkey, Gülşah Dağdevi̇ren, Gökçen Örgül, Aykan Yücel, Di̇lek Şahi̇n
Tetanus Vaccine During Pregnancy: Data Of A Tertiary Hospital In Turkey, Gülşah Dağdevi̇ren, Gökçen Örgül, Aykan Yücel, Di̇lek Şahi̇n
Turkish Journal of Medical Sciences
Background/aim: To evaluate the prevalence of tetanus vaccination in pregnant women and determine the factors affecting the vaccination and barriers to vaccination. Materials and methods: An observational-descriptive study was conducted on 494 women who gave birth at the Etlik Zübeyde Hanım Women's Health Training and Research Hospital, Ankara, Turkey. Participants were divided into 2 groups, vaccinated and unvaccinated. Sociodemographic characteristics, obstetric history, and prenatal care status were compared between the 2 groups. Results: There were 242 (48.9%) and 252 (51.1%) women in the vaccinated and unvaccinated groups, respectively. The vaccination rate decreased as the number of pregnancies increased (P = …
An Insight Into The Epitope-Based Peptide Vaccine Design Strategy And Studies Against Covid-19, Murat Topuzoğullari, Tayfun Acar, Peli̇n Peli̇t Arayici, Burcu Uçar, Erennur Uğurel, Emrah Şefi̇k Abamor, Tüli̇n Arasoğlu, Di̇lek Balik, Serap Derman
An Insight Into The Epitope-Based Peptide Vaccine Design Strategy And Studies Against Covid-19, Murat Topuzoğullari, Tayfun Acar, Peli̇n Peli̇t Arayici, Burcu Uçar, Erennur Uğurel, Emrah Şefi̇k Abamor, Tüli̇n Arasoğlu, Di̇lek Balik, Serap Derman
Turkish Journal of Biology
SARS-CoV-2 is a new member of the coronavirus family and caused the pandemic of coronavirus disease 2019 (COVID-19) in 2020. It is crucial to design and produce an effective vaccine for the prevention of rapid transmission and possible deaths wcaused by the disease. Although intensive work and research are being carried out all over the world to develop a vaccine, an effective and approved formulation that can prevent the infection and limit the outbreak has not been announced yet. Among all types of vaccines, epitope-based peptide vaccines outshine with their low-cost production, easy modification in the structure, and safety. In …
Down-Regulation Of Circular Rnaitch And Circhipk3 In Gastric Cancer Tissues, Sara Ghasemi, Modjtaba Emadi-Baygi, Parvaneh Nikpour
Down-Regulation Of Circular Rnaitch And Circhipk3 In Gastric Cancer Tissues, Sara Ghasemi, Modjtaba Emadi-Baygi, Parvaneh Nikpour
Turkish Journal of Medical Sciences
Background/aim: Gastric cancer (GC) is one of the major causes of cancer mortality worldwide. As a novel type of endogenous noncoding RNAs, circular RNAs (circRNAs) are formed by a covalent link between 5' and 3' ends. They are very stable and abundant in eukaryotes. As there were no reported studies on the expression profiles of circular RNA ITCH (cir-ITCH) and circHIPK3 in GC, in the current study, we aimed to delineate the expression profiles and clinicopathological relevance of these two circRNAs in GC tissues compared to their paired adjacent noncancerous tissues.Materials and methods: Quantitative real-time polymerase chain reaction was performed …
Design Of A Portable And Low-Cost Mass-Sensitive Sensor With The Capability Of Measurements On Various Frequency Quartz Tuning Forks, Mehmet Altay Ünal, İsmai̇l Cengi̇z Koçum, Di̇lek Çökeli̇ler Serdaroğlu
Design Of A Portable And Low-Cost Mass-Sensitive Sensor With The Capability Of Measurements On Various Frequency Quartz Tuning Forks, Mehmet Altay Ünal, İsmai̇l Cengi̇z Koçum, Di̇lek Çökeli̇ler Serdaroğlu
Turkish Journal of Electrical Engineering and Computer Sciences
Recently, sensor and biosensor applications have become widespread and are now significant tools in the biomedical field and other areas. Since quartz tuning fork (QTF) resonance frequency depends on the mass adsorbed to its prongs, it is generally used to measure minor mass change and detect target analyte in picogram levels. This study is undertaken to design and fabricate a sensor device for the measurement of QTF transducers. When QTF sensor studies were investigated, it was found that explanations on the details of instrumentation part were limited, and in addition, there was no compact commercial products. In this study, a …
A Descriptive Study Of Some Trifolium L. (Clover) Taxa Grown In Bolu Province, Emel Uslu, Mehmet Teki̇n Babaç
A Descriptive Study Of Some Trifolium L. (Clover) Taxa Grown In Bolu Province, Emel Uslu, Mehmet Teki̇n Babaç
Turkish Journal of Botany
Micromorphological characteristics of 13 Trifolium species, which are grown in the province of Bolu, were examined using a scanning electron microscope (SEM). The morphological characteristics determined from the study were subjected to morphometric analyses and their variation spectrums were defined. Tricolporate pollen grains showed two pollen shapes, prolate and subprolate, according to equatorial view. The smallest size of polar axis length (18.00 μm) was found in T. micranthum Viv. from section Chronosemium Ser.; the largest (88.95 μm) was found in T. hirtum All. from section Trifolium L.. Statistically, the smallest seeds were found in T. resupinatum L. from the section …
Is Body Mass Index A Risk Factor For Low Cerebral Oxygenation During Spinal Anesthesia In Women Undergoing Cesarean Section? A Preliminary Study, Gülçi̇n Aydin, Cemi̇le Dayangan Sayan
Is Body Mass Index A Risk Factor For Low Cerebral Oxygenation During Spinal Anesthesia In Women Undergoing Cesarean Section? A Preliminary Study, Gülçi̇n Aydin, Cemi̇le Dayangan Sayan
Turkish Journal of Medical Sciences
Background/aim: In this study, it was aimed to investigate the relationship between body mass index (BMI) and cerebral oxygenation during spinal anesthesia in women undergoing cesarean section. This study also aimed to demonstrate whether fetal cord blood oxygenation was affected by maternal BMI and/or delivery time.Materials and methods: The study included parturients with ASA I score undergoing cesarean section under spinal anesthesia in 2015 and 2016. They were divided into two groups according to BMI: Group 1 comprised parturients with BMI of
Comparative Transcriptome Sequencing To Determine Genes Related To The Nucellar Embryony Mechanism In Citrus, Özhan Şi̇mşek, Di̇cle Dönmez, Si̇nan Eti̇, Turgut Yeşi̇loğlu, Yildiz Kaçar
Comparative Transcriptome Sequencing To Determine Genes Related To The Nucellar Embryony Mechanism In Citrus, Özhan Şi̇mşek, Di̇cle Dönmez, Si̇nan Eti̇, Turgut Yeşi̇loğlu, Yildiz Kaçar
Turkish Journal of Agriculture and Forestry
Several citrus varieties produce apomictic seeds by the nucellar embryony (NE) mechanism. Nucellar embryos are created from nucellus tissue and have an identical genetic constitution to the mother plant. Nucellar embryony is known to be an unusual feature of seed production in many citrus cultivars. The term "NE" refers to the development of identical embryos from the maternal tissue known as the nucellus surrounding the embryo sac. The authors aimed here to detect differentially expressed genes involved in the NE mechanism. Orlando tangelo (OT), producing apomictic seeds, and a clementine mandarin, Algerian tangerine ranch selection (AT), known as monoembryonic, were …
Environmentally Friendly Fertilizers Can Enhance Yield And Bioactive Compounds Inchinese Cabbage (Brassica Rapa Ssp. Pekinensis), Jeongyeo Lee, Young-Hee Noh, Kun-Hyang Park, Dae-Soo Kim, Han Taek Jeong, Haeng-Soon Lee, Sung Ran Min, Hyeran Kim
Environmentally Friendly Fertilizers Can Enhance Yield And Bioactive Compounds Inchinese Cabbage (Brassica Rapa Ssp. Pekinensis), Jeongyeo Lee, Young-Hee Noh, Kun-Hyang Park, Dae-Soo Kim, Han Taek Jeong, Haeng-Soon Lee, Sung Ran Min, Hyeran Kim
Turkish Journal of Agriculture and Forestry
The objective of this study was to evaluate the performance of 3 environmentally friendly fertilizers and their effect on the growth of Chinese cabbage and its contents of bioactive compounds. The following fertilizers were applied: purslane extract, 5% sulfur, and 15% phosphoric acid with 5% calcium. A total of 9, 9, and 11 components were detected for fatty acids, carotenoids, and glucosinolates, respectively. The contents of cis-7 hexadecenoic acid, linoleic acid (C18:2n6c+t), and linolenic acid (C183n3) were generally increased, and also carotenoid amounts of violaxanthin, antheraxanthin, lutein, 13-cis-ß-carotene, α-carotene, ß-carotene, and 9-cis-ß-carotene were significantly increased by fertilizer treatments. All fertilization …
Authentication Of Gemlik Olive Cultivar Using 1h Nmr Spectroscopy Andchemometric Analysis, İbrahi̇m Sani̇ Özdemi̇r, Somer Beki̇roğlu
Authentication Of Gemlik Olive Cultivar Using 1h Nmr Spectroscopy Andchemometric Analysis, İbrahi̇m Sani̇ Özdemi̇r, Somer Beki̇roğlu
Turkish Journal of Agriculture and Forestry
In this study, 1H NMR spectroscopy was used to discriminate Gemlik olives cultivated in a protected designation of origin (PDO) region from those cultivated in non-PDO regions. For this purpose, 95 Gemlik olive samples (47 from PDO and 48 from non- PDO regions) were collected. 1H NMR spectral analysis was carried out on the oils extracted from these olive samples. The results of the partial least squares-discriminant analysis showed that olives from the PDO and non-PDO regions could be discriminated on the basis of their NMR profiles. The prediction ability of the model was better when olive samples from the …
Precision Cane Meristem Management Can Influence Productivity And Fruit Quality Offloricane Red Raspberry Cultivars, Aleksandar Zivotic, Nikola Micic, Mirjana Zabic, Borut Bosancic, Miljan Cvetkovic
Precision Cane Meristem Management Can Influence Productivity And Fruit Quality Offloricane Red Raspberry Cultivars, Aleksandar Zivotic, Nikola Micic, Mirjana Zabic, Borut Bosancic, Miljan Cvetkovic
Turkish Journal of Agriculture and Forestry
In Bosnia and Herzegovina, the hedgerow system is the main raspberry growing system, which has no clearly-defined standards regarding plant density and fruit-bearing potential per meter of hedgerow. This study evaluates the effect of precision cane meristem management in growing major floricane red raspberry cultivars in Bosnia and Herzegovina. During 2015 and 2016, in Willamette, Meeker, and Tulameen, grown under the hedgerow system, mixed buds were selected on fruiting laterals with the fruitbearing potential of 80, 100, and 120 well-developed and well-positioned mixed buds per meter of hedgerow. High stable yields were recorded under the medium load of 100 buds …
Molecular Characterization Of Apple (Malus × Domestica Borkh.) Genotypes Originatingfrom Three Complementary Conservation Strategies, Anca Butiuc, Ana Coste, Anca Farkas, Victoria Cristea, Valentina Isac, Adela Halmagyi
Molecular Characterization Of Apple (Malus × Domestica Borkh.) Genotypes Originatingfrom Three Complementary Conservation Strategies, Anca Butiuc, Ana Coste, Anca Farkas, Victoria Cristea, Valentina Isac, Adela Halmagyi
Turkish Journal of Agriculture and Forestry
Apple (Malus × domestica Borkh.) genotypes originating from different plant collections (field collection, in vitro plant collections undergoing or not undergoing cryopreservation) were screened and characterized by SSR markers. Shoot tips excised from plants grown in vitro were successfully cryopreserved by encapsulation-dehydration. The highest regrowth frequency (69%, cultivar Goldrush) of cryopreserved apices was achieved after 24 h of osmoprotection in 0.5 M sucrose, 3 h of desiccation, and 24% water content of alginate beads. No differences in morphological characteristics including shoot length and number and length of roots were observed between controls and plants recovered after cryopreservation. SSR markers were …
The Influence Of Exogenous Capsaicin Application On The Germination, Seedling Growth,And Yield Of Pepper, Levent Arin, Çağatay Arabaci
The Influence Of Exogenous Capsaicin Application On The Germination, Seedling Growth,And Yield Of Pepper, Levent Arin, Çağatay Arabaci
Turkish Journal of Agriculture and Forestry
The aim of this research was to investigate the effect of capsaicin application in different doses (0.0, 0.1, 1.0, 10.0, 25.0, 50.0, 100.0, and 200.0 ppm) on the germination, seedling growth, and yield of pepper plants (Capsicum annuum L. 'Burdem'). For this purpose, capsaicin was applied at several stages: (i) to the pepper seed before sowing, (ii) to the leaves during the 3rd to 4th true leaf stage for seedling quality evaluation, and (iii) to the leaves before planting in a greenhouse. There were no statistical differences among capsaicin doses and the control with respect to germination and emergence, but …
Identification And Characterization Of Hypovirus-Infected Cryphonectria Parasitica Isolates From Biological Control Plots In İzmir, Kütahya, And Sinop, Seçi̇l Akilli Şi̇mşek, Yakup Zekai̇ Katircioğlu, Nora Borst, Deni̇z Çakar, Simone Prospero, Daniel Rigling, Sali̇h Maden
Identification And Characterization Of Hypovirus-Infected Cryphonectria Parasitica Isolates From Biological Control Plots In İzmir, Kütahya, And Sinop, Seçi̇l Akilli Şi̇mşek, Yakup Zekai̇ Katircioğlu, Nora Borst, Deni̇z Çakar, Simone Prospero, Daniel Rigling, Sali̇h Maden
Turkish Journal of Agriculture and Forestry
In a pilot study, a biological control with hypovirus-infected Cryphonectria parasitica was applied in 3 study plots in Turkey, in June 2013. The aim of this study was to evaluate the success of the applied biological control by verifying the establishment of the released hypovirus (CHV-1) strains using molecular markers. C. parasitica isolates were sampled from cankers at 3 different time points: before the biological control treatments (April 2013), and 5 months (October 2013) and 11 months (May 2014) after the treatment. In total, 255 C. parasitica isolates were recovered and characterized. First, the culture morphology and vegetative compatibility type …
Development Of An In Vitro Micropropagation Protocol For Myrobalan 29c Rootstock, Murat Güney
Development Of An In Vitro Micropropagation Protocol For Myrobalan 29c Rootstock, Murat Güney
Turkish Journal of Agriculture and Forestry
Stone fruits are well known for their high nutritional value. Therefore, in horticulture, the micropropagation of suitable rootstocks is vital for their cultivation. The aim of the present study was to improve the micropropagation protocol of Myrobalan 29C (Prunus cerasifera Ehrh.) rootstock using shoot-tip culture. Murashige and Skoog (MS) basal medium containing 2 mg L-1 6-benzylaminopurine (BAP) and 0.05 mg L-1 gibberellic acid (GA3) resulted in the highest number (14.3) of multiple shoots. However, a greater shoot length (2.0 cm) was attained when GA3 was excluded from the MS medium and the concentration of BAP was reduced to 1 mg …
Change In Physiological And Biochemical Parameters Under Drought Stress Insalt-Tolerant And Salt-Susceptible Eggplant Genotypes, Sevi̇nç Kiran, Şebnem Kuşvuran, Fatma Özkay, Şeküre Şebnem Elli̇altioğlu
Change In Physiological And Biochemical Parameters Under Drought Stress Insalt-Tolerant And Salt-Susceptible Eggplant Genotypes, Sevi̇nç Kiran, Şebnem Kuşvuran, Fatma Özkay, Şeküre Şebnem Elli̇altioğlu
Turkish Journal of Agriculture and Forestry
This study was carried out to determine the changes in chlorophyll and ion contents, lipid peroxidation level, and antioxidative enzyme activities of 4 eggplant genotypes (Mardin Kızıltepe (MK), Burdur Merkez (BM), Artvin Hopa (AH), and Kemer (K)) with different salt tolerance levels under drought stress. Experiments were conducted in a greenhouse with controlled climatic conditions. When the plants reached the 3-4 leaves stage, 3 different treatments were applied to create the drought levels. The first condition in the study was obtained through control application treatment (D0), which was depletion of 40% of the available water holding capacity. The second application …
Comparative Study Of Solvent Extraction Of Molybdenum By Various Extractants, Abdoul Rachid Chaibou Yacouba, Salmana Laouali Ibrahim, Ibrahim Natatou
Comparative Study Of Solvent Extraction Of Molybdenum By Various Extractants, Abdoul Rachid Chaibou Yacouba, Salmana Laouali Ibrahim, Ibrahim Natatou
Turkish Journal of Chemistry
Solvent extraction of molybdenum from various acid media by Alamine 336, Aliquat 336, TOPO, and DEHPA in kerosene was studied. The extraction efficiency of molybdenum by diisobutyl ketone (DIBK), the effects of various parameters like diluents, mineral acids, extractant concentration, and applications of these extractants on molybdenum extraction contained in the uranium-bearing ore solutions were investigated. DIBK used as solvent can indeed extract the molybdenum without adding any extractants in the range of 20-50 mg/L. Molybdenum was extracted by Aliquat 336 in all mineral acids at more than 90%. On the basis of slope analysis, the compositions of the extracted …
Synthesis And Characterization Of Novel Indanone-Based Spiro-Dihydrobenzofuran Derivatives, Meli̇ha Burcu Gürdere, Neşe Dürü, Yakup Budak, Mustafa Ceylan
Synthesis And Characterization Of Novel Indanone-Based Spiro-Dihydrobenzofuran Derivatives, Meli̇ha Burcu Gürdere, Neşe Dürü, Yakup Budak, Mustafa Ceylan
Turkish Journal of Chemistry
In this study, the synthesis and characterization of novel indanone-based spiro-dihydrobenzofuran derivatives were examined. Firstly, chalcone-like compounds 4a-k, ($E)$-2-benzylidene-2,3-dihydro-1$H$-inden-1-one derivatives, were synthesized by the base-catalyzed addition of benzaldehyde derivatives to 2,3-dihydro-1$H$-inden-1-one. Then Mn(OAc)$_{3}$-mediated addition of dimedone (2) to the chalcone-like compounds gave two novel spiro-dihydrobenzofuran isomers: (3$S)$-6,6-dimethyl-3-aryl-6,7-dihydro-3$H$-spiro [benzofuran-2,2'-indene]-1',4(3'$H$,5$H)$-dione (5a-k) and (2'$S)$-6,6-dimethyl-2-aryl-6,7-dihydro-2$H$-spiro[benzofuran-3,2'-indene]-1',4(3'$H$,5$H)$-dione (6a-k) in good yields. The isomers were separated by column chromatography and their structures were elucidated on the basis of spectral data (NMR, IR) and elemental analysis.
The Solvatochromism And Electronic Structure Of (E)-2-(2-Hydroxystyryl)Quinolin-8-Ol, Ayşegül Gümüş, Yadi̇gar Gülseven Sidir, İsa Sidir, Selçuk Gümüş
The Solvatochromism And Electronic Structure Of (E)-2-(2-Hydroxystyryl)Quinolin-8-Ol, Ayşegül Gümüş, Yadi̇gar Gülseven Sidir, İsa Sidir, Selçuk Gümüş
Turkish Journal of Chemistry
The (E)-2-(2-hydroxystyryl)quinolin-8-ol (abbreviated as HSQ) molecule was synthesized and characterized. The ESIPT, solvatochromism properties, electronic structure, and ground and excited electric dipole moments of this molecule were measured using absorption and fluorescence spectra recorded in 13 different solvents. Its electronic structure via electronic transitions was investigated to find the quantitative values of solvatochromism properties by LSER calculations. The ESIPT mechanism was clarified; ground and excited dipole moments were determined using solvatochromic shift methods. The DFT (B3LYP)/6-311$++$G(d,p) method and basis set with potential energy surface (PES) calculations of proton transfer were used to explain the ESIPT mechanism. NBO analysis, NLO properties, …
Step-By-Step Optimization Of The Hilic Method For Simultaneous Determination Of Abacavir, Lamivudine, And Zidovudine From Dosage Form, Cem Erkmen, Mehmet Gümüştaş, Si̇bel Ayşil Özkan, Bengi̇ Uslu
Step-By-Step Optimization Of The Hilic Method For Simultaneous Determination Of Abacavir, Lamivudine, And Zidovudine From Dosage Form, Cem Erkmen, Mehmet Gümüştaş, Si̇bel Ayşil Özkan, Bengi̇ Uslu
Turkish Journal of Chemistry
Combined therapy for HIV treatment shows superior efficacy in comparison to single therapy. Furthermore, the separation and determination of the combined dosage forms hold a significant place in the pharmaceutical industry. Not only reverse phase high-performance liquid chromatography (HPLC) but also hydrophilic interaction liquid chromatography (HILIC) can be used for these purposes. Contrary to conventional RP systems, HILIC may be an alternative for the analysis of polar substances. The aim of this study was the step-by-step development of a simple, rapid, and reliable method for the simultaneous determination of antiviral compounds from their marketed formulation (Trizivir). In order to achieve …
Synthesis Of Hofmann-Type Zn(H$_2$O)$_2$Ni(Cn)$_4$.Ng (G = Water And 1,4-Dioxane) Clathrates And The Determination Of Their Structural Properties By Various Spectroscopic Methods, Zeki̇ Kartal, Onur Şahi̇n, Abdülkeri̇m Yavuz
Synthesis Of Hofmann-Type Zn(H$_2$O)$_2$Ni(Cn)$_4$.Ng (G = Water And 1,4-Dioxane) Clathrates And The Determination Of Their Structural Properties By Various Spectroscopic Methods, Zeki̇ Kartal, Onur Şahi̇n, Abdülkeri̇m Yavuz
Turkish Journal of Chemistry
Two new 2-dimensional cyanide-bridged coordination polymers [Zn(H$_{2}$O)$_{2}$Ni(CN)$_{4}$ 6(H$_{2}$O) and Zn(H$_{2}$O)$_{2}$ Ni(CN)$_{4}$ 3(C$_{4}$H$_{8}$O$_{2})$], which were similar to Hofmann-type clathrates, were synthesized based on [Ni(CN)$_{4}$]$^{2-}$ and Zn$^{2+}$ as building blocks. These substances were synthesized as compounds in crystalline form. Thes tructures of the crystalline compounds were characterized via their spectral analyses. General information about the structures of the newly obtained Hofmann-type clathrates was obtained from their vibration spectra by considering significant changes in the vibration peaks of the cyanide group, water ligand molecule, and guest molecules (water and 1,4-dioxane). The thermal behavior of the Hofmann-type clathrates was investigated in the range of …
Investigation Of The Effects Of Some Water-Soluble Vitamins On Glutathione Reductase Enzyme Purified From Bovine Liver, Mehmet Riza Kivanç, Vedat Türkoğlu
Investigation Of The Effects Of Some Water-Soluble Vitamins On Glutathione Reductase Enzyme Purified From Bovine Liver, Mehmet Riza Kivanç, Vedat Türkoğlu
Turkish Journal of Chemistry
Glutathione reductase (GR, EC 1.8.1.7) is an antioxidant enzyme and is involved in the reducing reaction of oxidized glutathione. Glutathione and reduced glutathione are very crucial for micro- and macroorganisms because of their barrier function against radicals. Therefore, the aim of this article was to purify GR and evaluate the relationship between purified GR and vitamins. GR was purified from bovine liver using 2',5'-ADP Sepharose 4B column materials. To check the purity of each subunit of the enzyme, SDS-PAGE electrophoresis was performed and each one was 55 kDa. Afterwards, specific activity and purified ratio for the enzyme were calculated as …
Synthesis, Characterization, And Investigation Of Singlet Oxygen, Dna Interaction, And Topoisomerase I Inhibition Properties Of Novel Zinc(Ii) Phthalocyanine, Ümi̇t Demi̇rbaş
Turkish Journal of Chemistry
In this work, phthalonitrile (3) and zinc(II) phthalocyanine (4) were prepared. To determine the photodynamic therapy potential of compound 4, singlet oxygen quantum yield, DNA binding and cleavage, and topoisomerase I inhibition experiments were performed. The singlet oxygen quantum yield value of compound 4 was found higher than that of the standard unsubstituted zinc(II) phthalocyanine compound (Std-ZnPc). The binding experiments showed that compound 4 interacted with ct-DNA strongly via nonintercalation mode. pBR322 plasmid DNA cleavage activity of the compound was investigated using agarose gel electrophoresis. The results showed that the compound 4 had important DNA cleavage activity. The E. coli …
Synthesis And Characterization Of Unsaturated Diacyl And Alkyl-Acyl Piperazine Derivatives, Sai̇t Sari, Seda Ünalan, Mehmet Yilmaz
Synthesis And Characterization Of Unsaturated Diacyl And Alkyl-Acyl Piperazine Derivatives, Sai̇t Sari, Seda Ünalan, Mehmet Yilmaz
Turkish Journal of Chemistry
The aim of this study is to obtain new unsaturated piperazine compounds by the reactions of piperazine (1a) and piperazine derivatives (1b-1d) with acylation reactive groups (a-2j). Methacryloyl piperazine (1b) was synthesized from the reaction of methacrylic anhydride with piperazine (1a). Acyl chlorides (2b-2d) were prepared from the reaction of thionyl chloride with carboxylic acids (3a-3c) obtained as a result of the reaction with malonic acid and suitable aldehyde (5-methylfuran-2-carbaldehyde for 3a, cinnamaldehyde for 3b, and thiophene-2-carbaldehyde for 3c), respectively, by literature methods. Acyl chlorides 2ed and 2f }were obtained from the reaction of commercially purchased carboxylic acids 3d and …