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Karakuş S, Başçıl E, Tok F, Erdoğan Ö, Çevik Ö, Başoğlu F. Synthesis, biological evaluation and molecular docking studies of novel 1,3,4-thiadiazoles as potential anticancer agents and human carbonic anhydrase inhibitors. Mol Divers 2023:10.1007/s11030-023-10778-5. [PMID: 38123787 DOI: 10.1007/s11030-023-10778-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Accepted: 11/17/2023] [Indexed: 12/23/2023]
Abstract
Thiosemicarbazide and also 1,3,4-thiadiazole derivatives have been garnering substantial attention from researchers worldwide due to their expansive range of biological activities, encompassing antimicrobial, anti-inflammatory, and anticancer properties. Herein, we embarked on a comprehensive investigation in this study, introducing a novel series of thiosemicarbazides (3a-3i) and their corresponding 1,3,4-thiadiazole (4a-4i) derivatives. The compounds were meticulously designed, synthesized, and subjected to meticulous characterization using various spectroscopic methods such as FT-IR, 1H-NMR, 13C-NMR, and elemental analysis. Afterward, their potential anti-proliferative effectiveness was assessed using MTT assay against two cancer cell lines (U87 and HeLa) and normal fibroblast cells (L929). Among the compounds, 4d showed the highest cytotoxic activity against U87 and 4i against HeLa. Compound 3b exhibited selective cytotoxic activity against both cancer cells. Among the molecules with selective activity against the U87 cell line; 3a, 3b, 4d and 4e were further evaluated by caspase-3 activity levels, Bax and Bcl-2 protein expression, and total oxidant status assay. Besides, carbonic anhydrase IX activity studies were also performed in order to understand the underlying mechanism of action. The results indicated that compound 4e showed higher efficacy than standard acetazolamide (IC50 = 0.58 ± 0.02 µM) with an IC50 value of 0.03 ± 0.01 µM. Furthermore, molecular docking studies were carried out using carbonic anhydrase IX crystals to determine the compound's interactions with the enzyme's active sites. This comprehensive investigation sheds light on the intricate interplay between molecular structure and biological activity, providing valuable insights into the therapeutic potential of these compounds.
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Affiliation(s)
- Sevgi Karakuş
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, 34854, Istanbul, Türkiye
| | - Elif Başçıl
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, 34854, Istanbul, Türkiye
| | - Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, 34854, Istanbul, Türkiye.
| | - Ömer Erdoğan
- Department of Medical Biochemistry, Faculty of Medicine, Gaziantep Islam Science and Technology University, 27010, Gaziantep, Türkiye
| | - Özge Çevik
- Department of Biochemistry, School of Medicine, Aydın Adnan Menderes University, 09010, Aydın, Türkiye
| | - Faika Başoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, European University of Lefke, Northern Cyprus TR-10, Mersin, Türkiye.
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Yüksel E, Inan LE, Tok F. Morphological and electrophysiological evaluation of median and ulnar nerve in complex regional pain syndrome type 1. Pain Pract 2023. [PMID: 36915259 DOI: 10.1111/papr.13222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 12/10/2022] [Accepted: 02/24/2023] [Indexed: 03/15/2023]
Abstract
OBJECTIVE Complex regional pain syndrome (CRPS) can be distinguished as type I without and type II with electrophysiological evidence of major nerve lesion. The pathophysiology of both subgroups is still under investigation. The aim of this research is to demonstrate the nerve morphology and electrophysiology in CRPS type I patients. MATERIALS AND METHODS Bilateral median and ulnar nerve cross-sectional areas were evaluated with ultrasound and also median and ulnar nerve conduction studies of both hands were performed. Cross-sectional areas of median and ulnar nerves and nerve conduction studies in healthy controls were also obtained and compared with the patients. RESULTS Twenty-five male patients and 11 healthy male controls were enrolled in the study. The mean age of the patients was 24.08 ± 5.50 years and controls was 23.18 ± 5.09 (p > 0.05). Compound muscle action potential (CMAP) and sensory nerve action potential (SNAP) amplitudes of the diseased side were found significantly lower than the healthy side (p < 0.05). Both median and ulnar nerve distal motor latency values were significantly higher in the patient group (p < 0.05). There was no significant difference in the median and ulnar nerve cross-sectional area when compared with the opposite extremity and healthy volunteers. CONCLUSION The lower SNAP and CMAP amplitudes of the median and ulnar nerves compared to the healthy side and the prolongation of the affected side median and ulnar nerve distal motor latencies of the affected individuals may indicate axonal involvement in patients with CRPS type 1. Decreased CMAP amplitudes may also indicate muscle atrophy due to a decrease in the number of functional motor units.
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Affiliation(s)
- Emine Yüksel
- Department of Algology, Ankara Training and Research Hospital, Altındağ, Ankara, Turkey
| | - Levent Ertuğrul Inan
- Department of Neurology, Ankara Training and Research Hospital, Altındağ, Ankara, Turkey
| | - Fatih Tok
- Department of Physical Medicine & Rehabilitation, Gulhane School of Medicine, Etlik, Ankara, Turkey
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Tok F, Yang X, Tabanca N, Koçyiğit-Kaymakçıoğlu B. Synthesis of Phthalimide Derivatives and Their Insecticidal Activity against Caribbean Fruit Fly, Anastrepha suspensa (Loew). Biomolecules 2023; 13:biom13020361. [PMID: 36830730 PMCID: PMC9953367 DOI: 10.3390/biom13020361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 01/17/2023] [Accepted: 02/02/2023] [Indexed: 02/17/2023] Open
Abstract
In this study, thirteen phthalimide derivatives were designed and synthesized. All synthesized compounds were evaluated to determine their potential for inhibitory activities against females of the Caribbean fruit fly, Anastrepha suspensa (Loew) (Diptera: Tephritidae). These efforts led to the discovery of three compounds 4a, 4c, and 4d with potent insecticidal activity (LD50 range from 0.70 to 1.91 μg/fly). Among these compounds, 4a exhibited the highest inhibitory potency with 0.70 μg/fly. In addition, in silico models indicated that compound 4a is less toxic than phthalimide and other precursors. Therefore, our results suggest that 4a has strong potential as a candidate component for developing a novel environmentally friendly insecticide for control of pest fruit flies.
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Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul 34854, Turkey
| | - Xiangbing Yang
- Subtropical Horticulture Research Station (SHRS), United States Department of Agriculture-Agricultural Research Service (USDA-ARS), 13601 Old Cutler Rd., Miami, FL 33158, USA
| | - Nurhayat Tabanca
- Subtropical Horticulture Research Station (SHRS), United States Department of Agriculture-Agricultural Research Service (USDA-ARS), 13601 Old Cutler Rd., Miami, FL 33158, USA
| | - Bedia Koçyiğit-Kaymakçıoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul 34854, Turkey
- Correspondence: ; Tel.: +90-(216)-777-5200
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Ugras Z, Tok F, Salva E, Ultav G, Kaymakcioglu-Kocyigit B. Synthesis and structural characterization of novel 2-pyrazoline derivatives: Evaluation of their antiproliferative activity and fluorescence properties. Acta Poloniae Pharmaceutica - Drug Research 2023. [DOI: 10.32383/appdr/157503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In this study, a series of novel 2-pyrazoline derivatives were synthesized and their structures were established by using spectral methods. The antiproliferative activities of compounds were investigated against human cell lines A-549 and MCF-7 by MTT assay and L-929 (mouse normal fibroblast) cell cytotoxicity was also examined. Apoptotic effects of the compounds in breast and lung cancer cells were assessed by Annexin V-FITC apoptosis assay using flow cytometry. The antiproliferative effect on lung carcinoma of the synthesized compounds was higher than breast carcinoma. Moreover, it was observed that none of all synthesized compounds have cytotoxic activity in healthy cells. Flow cytometry studies have shown that compounds induced apoptosis at high concentration. Additionally, fluorescence cell imaging studies were performed for the first time in A-549 and MCF-7 cancer cell lines to determine the potential of the biosensor compounds by fluorescence microscopy. Compounds 4b, 4d, 4e and 4f showed fluorescence properties by considering microscopic imaging.
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Akdağ K, Tok F, Karakuş S, Erdoğan Ö, Çevik Ö, Koçyiğit-Kaymakçıoğlu B. Synthesis and Biological Evaluation of Some Hydrazide-Hydrazone Derivatives as Anticancer Agents. Acta Chim Slov 2022; 69:863-875. [PMID: 36562164 DOI: 10.17344/acsi.2022.7614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 10/04/2022] [Accepted: 10/30/2022] [Indexed: 12/14/2022] Open
Abstract
In this study, a series of hydrazide-hydrazone derivatives (3a-3u) were synthesized and evaluated for their anticancer activities against prostate cancer cell line (PC-3), breast cancer cell line (MCF-7), colon cancer cell line (HT-29) and human umbilical vein endothelial cells (HUVEC) using MTT assay. In particular, compound 3h having a pyrrole ring was found to be the most potent derivative with IC50 = 1.32, 2.99, 1.71 µM against PC-3, MCF-7, HT-29 cancer cell lines respectively using paclitaxel as a standard compound. Furthermore, compound 3h was subjected to further biological studies such as caspase-3 activity and Annexin-V assay to evaluate their inhibitory potentials. The activity results displayed that compound 3h increased caspase-3 activation and the number of cells to early apoptosis. The additional studies like pharmacokinetics, bioavailability scores and drug-likeness properties were also evaluated. The in silico pharmacokinetics predictions displayed that the bioavailability of these compounds may be high.
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Affiliation(s)
- Kadriye Akdağ
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, 34854, Istanbul, Turkey.
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Özçakar L, Tok F, Ricci V, Mezian K, Wu CH, Wu WT, Park GY, Kwon DR, Prieto MG, Dughbaj M, Doğan Y, Aksöz B, Güvener O, Ekiz T, Tıraş M, Karaçoban L, Menderes Y, Çiftçi E, İlicepınar ÖF, Kaya U, Kara M, Chang KV. Artificial Intelligence Featuring EURO-MUSCULUS/USPRM Basic Scanning Protocols. Am J Phys Med Rehabil 2022; 101:e174-e175. [PMID: 35802706 DOI: 10.1097/phm.0000000000002070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Tok F, Sağlık BN, Özkay Y, Kaplancıklı ZA, Koçyiğit-Kaymakçıoğlu B. Design, synthesis, biological activity evaluation and in silico studies of new nicotinohydrazide derivatives as multi-targeted inhibitors for Alzheimer's disease. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tok F, Küçükal B, Baltaş N, Tatar Yılmaz G, Koçyiğit-Kaymakçıoğlu B. Synthesis of novel thiosemicarbazone derivatives as antidiabetic agent with enzyme kinetic studies and antioxidant activity. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2099857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Bahar Küçükal
- Department of Chemistry, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Nimet Baltaş
- Department of Chemistry, Faculty of Arts and Sciences, Recep Tayyip Erdoğan University, Rize, Turkey
| | - Gizem Tatar Yılmaz
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Tok F, Sağlık BN, Özkay Y, Kaplancıklı ZA, Koçyiğit-Kaymakçıoğlu B. N‐Substituted arylidene‐3‐(methylsulfonyl)‐2‐oxoimidazolidine‐1‐carbohydrazide as cholinesterase inhibitors: Design, synthesis, and molecular docking study. Chem Biodivers 2022; 19:e202200265. [DOI: 10.1002/cbdv.202200265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/27/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Fatih Tok
- Marmara Universitesi Eczacilik Fakultesi Pharmaceutical Chemistry Marmara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 34854 4/A Istanbul TURKEY
| | - Begüm Nurpelin Sağlık
- Anadolu University Yunus Emre Campus: Anadolu Universitesi Yunus Emre Kampusu Pharmaceutical Chemistry Tepebaşı 26470 Eskişehir TURKEY
| | - Yusuf Özkay
- Anadolu University Yunus Emre Campus: Anadolu Universitesi Yunus Emre Kampusu Pharmaceutical Chemistry Tepebaşı 26470 Eskişehir TURKEY
| | - Zafer Asım Kaplancıklı
- Anadolu University Yunus Emre Campus: Anadolu Universitesi Yunus Emre Kampusu Pharmaceutical Chemistry Tepebaşı 26470 Eskişehir TURKEY
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Tok F, Erdoğan Ö, Çevik Ö, Koçyiğit-Kaymakçıoğlu B. Design, Synthesis, In Silico ADMET Studies and Anticancer Activity of Some New Pyrazoline and Benzodioxole Derivatives. Acta Chim Slov 2022; 69:293-303. [PMID: 35861084 DOI: 10.17344/acsi.2021.7119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 11/19/2022] Open
Abstract
A new series of 2-pyrazoline derivatives starting from substituted benzodioxole chalcones were designed and synthesized. IR and 1H NMR spectral data and elemental analysis were used to characterize the structures of the synthesized compounds. The cytotoxic activities on HeLa, MCF-7 cancer cell lines and NIH-3T3 for these compounds were tested by using MTT assay. Among the synthesized compounds 2d, 2j, 3j and 3n against MCF-7 cells, and 3c against HeLa exhibited significant cytotoxic activity with IC50 between 10.08 and 27.63 μM. Compound 3f showed the most potent anticancer activity against both cancer cells with good selectivity (IC50 = 11.53 μM on HeLa with SI = 81.75 and IC50 = 11.37 μM on MCF-7 with SI = 82.90). Furthermore, in silico ADMET analyses were performed and the drug-likeness properties of the compounds were investigated.
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Tok F, Kaya M, Karaca H, Koçyiğit-Kaymakçıoğlu B. Synthesis of some novel 1,3,4-oxadiazole derivatives and evaluation of their antimicrobial activity. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2060751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Murat Kaya
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Hülya Karaca
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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Tok F, Baltaş N, Tatar G, Koçyiğit-Kaymakçıoğlu B. Synthesis, biological evaluation and in silico studies of new pyrazoline derivatives bearing benzo[d]thiazol-2(3H)-one moiety as potential urease inhibitors. Chem Biodivers 2022; 19:e202100826. [PMID: 35018718 DOI: 10.1002/cbdv.202100826] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 01/11/2022] [Indexed: 11/09/2022]
Abstract
Novel pyrazoline derivatives containing benzo[d]thiazol-2(3H)-one moiety were synthesized and screened for their inhibitory properties against to urease, a clinically important metabolic enzyme. In vitro enzyme inhibition studies revealed that all pyrazolines (7.21-87.77 µM) were more potent than the standard inhibitor acetohydroxamic acid (251.74 µM) against the urease enzyme. Most notably, compound 2m , which is more active than the other compounds in in vitro and molecular docking studies, showed a significant inhibition potential and efficient IC 50 values (7.21±0.09 µM) and in silico inhibition constant (0.11 µM). Furthermore, molecular dynamics (MD) simulation analysis suggests that the binding stability of urease enzyme and compound 2m were stably maintained during the 100 ns simulation time. Compound 2m also exhibited good physicochemical and pharmacokinetic parameters. The overall results of urease inhibition have indicated that these pyrazoline derivative compounds can be further optimized and developed for the discovery of novel urease inhibitors.
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Affiliation(s)
- Fatih Tok
- Marmara Universitesi Eczacilik Fakultesi, Pharmaceutical Chemistry, Marmara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry,, 34854 4/A, Istanbul, TURKEY
| | - Nimet Baltaş
- Recep Tayyip Erdogan University Faculty of Arts and Sciences: Recep Tayyip Erdogan Universitesi Fen Edebiyat Fakultesi, Chemistry, Department of Chemistry, Faculty of Arts and Sciences, Rize, TURKEY
| | - Gizem Tatar
- Karadeniz Technical University: Karadeniz Teknik Universitesi, Bioistatistics and Medical Informatics, Department of Biostatistics and Medical Informatics, Faculty of Medicine, Trabzon, TURKEY
| | - Bedia Koçyiğit-Kaymakçıoğlu
- Marmara University: Marmara Universitesi, Pharmaceutical Chemistry, Marmara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry,, Türkiye, 34854 4/A, Istanbul, TURKEY
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Tok F, Sağlık BN, Özkay Y, Ilgın S, Kaplancıklı ZA, Koçyiğit-Kaymakçıoğlu B. Synthesis of new hydrazone derivatives and evaluation of their monoamine oxidase inhibitory activity. Bioorg Chem 2021; 114:105038. [PMID: 34102520 DOI: 10.1016/j.bioorg.2021.105038] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/10/2021] [Accepted: 05/28/2021] [Indexed: 11/26/2022]
Abstract
A novel series of hydrazone derivatives were designed and synthesized. Their structures were characterized by IR, 1H NMR, 13C NMR and HR-MS spectroscopic methods. The newly synthesized compounds were evaluated for their inhibitory activity against monoamine oxidase enzymes (MAO-A and MAO-B). Compounds 2a, 2k, 4a and 4i showed significant inhibitory activity against MAO-A, with IC50 value in the range of 0.084-0.207 µM compared to reference drug moclobemide (IC50 value = 6.061 µM). These compounds (2a, 2k, 4a and 4i) were exposed to cytotoxicity tests to establish their preliminary toxicological profiles and were found to be non-cytotoxic. Moreover, the most effective compound 4i was evaluated using enzyme kinetics and docking studies to elucidate the plausible mechanisms of inhibition of MAO-A. According to enzyme kinetic studies, compound 4i was a reversible and competitive inhibitor with similar inhibition features as the substrates. Also, it was seen that this compound was settled down very properly at the active site of MAO-A enzyme by doing important interactions owing to the docking studies. Finally, ADME predictions were applied to estimate pharmacokinetic profiles of synthesized compounds. According to calculated ADME predictions, all parameters of the compounds were within the standard ranges in terms of "Rule of Five" and "Rule of Three" and it was detected that the synthesized compounds (2a-4i) have good and promising pharmacokinetic profiles.
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Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Begüm Nurpelin Sağlık
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey; Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Yusuf Özkay
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey; Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Sinem Ilgın
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
| | - Zafer Asım Kaplancıklı
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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Yilmaz S, Tok F, Sahar EA, Kaymakcioglu BK, Kirmizibayrak PB. Induction of Divergent Cell Death Pathways by Urea and Carbohydrazide Derivatives. Anticancer Agents Med Chem 2021; 22:1761-1768. [PMID: 34053426 DOI: 10.2174/1871520621666210528153949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/18/2021] [Accepted: 04/12/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND The complexity of cancer biology and the development of chemotherapy resistance are two main obstacles to cancer treatment and necessitate novel anticancer molecules that target different cell death pathways. Modulation of endoplasmic reticulum (ER) stress and subsequent activation of the unfolded protein response (UPR) has been proposed as potential chemotherapeutic target, as prolonged ER stress can lead to cell death via apoptosis or necrosis. OBJECTIVE The present study aims to evaluate the molecular mechanism underlying the cytotoxic activity of selected urea and carbohydrazide derivatives. METHODS Cell proliferation assays were performed on HeLa, Capan1, MCF7, HCC1937, and MRC5 cell lines by WST-1 assay. The expression levels of selected ER stress, autophagy, and apoptosis marker proteins were compared by immunoblotting to characterize the underlying mechanism of cytotoxicity. Flow cytometry was used to detect apoptosis. RESULTS Of the tested cytotoxic compounds, 3a, 4a, 5a, 6a, and 1b dramatically and 5b moderately increased ER stress-related CHOP protein levels. Interestingly, 5b but not 3a, 4a, 5a, 6a, or 1b increased the expression of pro-apoptotic proteins such as cleaved PARP-1 and cleaved caspase-3 and -7. Flow-cytometry analysis further confirmed that the cytotoxic activity of 5b but not the other compounds is mediated by apoptosis, which is also demonstrated by a significant increase in the percentage of late apoptotic cells (7-AAD/annexin V double-positive cells). CONCLUSION Our results suggest that changing a substituent from trifluoromethyl to nitro in urea and carbohydrazide core structure alters the cell death mechanism from apoptosis to an apoptosis-independent cell death pathway. This study shows an example of how such simple modifications of a core chemical structure could cause the induction of divergent cell death pathways.
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Affiliation(s)
- Sinem Yilmaz
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey
| | - Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Esra A Sahar
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey
| | - Bedia K Kaymakcioglu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Petek B Kirmizibayrak
- Department of Biotechnology, Graduate School of Natural and Applied Sciences, Ege University, Izmir, Turkey
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Türk S, Tok F, Erdoğan Ö, Çevik Ö, Tok TT, Koçyiğit-Kaymakçıoğlu B, Karakuş S. Synthesis, anticancer evaluation and in silico ADMET studies on urea/thiourea derivatives from gabapentin. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2020.1845678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Sevda Türk
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Karadeniz Technical University, Trabzon, Turkey
| | - Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Ömer Erdoğan
- Department of Biochemistry, School of Medicine, Aydın Adnan Menderes University, Aydın, Turkey
| | - Özge Çevik
- Department of Biochemistry, School of Medicine, Aydın Adnan Menderes University, Aydın, Turkey
| | - Tuğba Taşkın Tok
- Department of Chemistry, Faculty of Sciences and Arts, Gaziantep University, Gaziantep, Turkey
| | | | - Sevgi Karakuş
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
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Tok F, Koçyiğit-Kaymakçıoğlu B. Design, Synthesis and Biological Screening of Novel 1,5-Diphenyl-3-(4-(trifluoromethyl)phenyl)-2-pyrazoline Derivatives. Acta Chim Slov 2020. [DOI: 10.17344/acsi.2020.6028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
1-Phenyl-5-substituted-3-(4-(trifluoromethyl)phenyl)-4,5-dihydro-1H-pyrazole derivatives were synthesized from chalcone derivatives. The structures of compounds were characterized by IR, 1H NMR spectroscopic methods and elemental analysis. All compounds were evaluated for their in vitro antioxidant activity using DPPH and ABTS methods, anti-inflammatory activity using lipoxygenase inhibitory method and antidiabetic activity using the α-glucosidase inhibitory method. Especially, pyrazoline derivatives exhibited stronger anti-inflammatory activity than the reference drug indomethacin (IC50: 50.45 μM) and their IC50 values were in the range of 0.68 and 4.45 μM. In addition, the ADME properties of all chalcone and pyrazoline derivatives were calculated by Lipinski’s and Veber’s rules.
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Tok F, KoĂ yiÄźit-KaymakĂ Ä oÄźlu B. Design, Synthesis and Biological Screening of Novel 1,5-Diphenyl-3-(4-(trifluoromethyl)phenyl)-2-pyrazoline Derivatives. Acta Chim Slov 2020; 67:1139-1147. [PMID: 33533467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Abstract
1-Phenyl-5-substituted-3-(4-(trifluoromethyl)phenyl)-4,5-dihydro-1H-pyrazole derivatives were synthesized from chalcone derivatives. The structures of compounds were characterized by IR, 1H NMR spectroscopic methods and elemental analysis. All compounds were evaluated for their in vitro antioxidant activity using DPPH and ABTS methods, anti-inflammatory activity using lipoxygenase inhibitory method and antidiabetic activity using the ?-glucosidase inhibitory method. Especially, pyrazoline derivatives exhibited stronger anti-inflammatory activity than the reference drug indomethacin (IC50: 50.45 µM) and their IC50 values were in the range of 0.68 and 4.45 µM. In addition, the ADME properties of all chalcone and pyrazoline derivatives were calculated by Lipinski's and Veber's rules.
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Tok F, İrem Abas B, Çevik Ö, Koçyiğit-Kaymakçıoğlu B. Design, synthesis and biological evaluation of some new 2-Pyrazoline derivatives as potential anticancer agents. Bioorg Chem 2020; 102:104063. [PMID: 32663669 DOI: 10.1016/j.bioorg.2020.104063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/28/2020] [Accepted: 06/28/2020] [Indexed: 01/22/2023]
Abstract
A new series of N-(4-(1-Phenyl-5-aryl-4,5-dihydro-1H-pyrazol-3-yl)phenyl)-4-substitutedbenzamide derivatives were designed and synthesized from new chalcone derivatives. All newly synthesized compounds were determined by using IR, 1H-NMR, 13C-NMR spectroscopic methods, elemental analysis and evaluated for their in vitro antiproliferative activities on HeLa, MCF-7, MKN-45 cancer cell lines and NIH-3T3 cell line using MTT assay. Expression of Bax and Bcl-2 proteins was detected by Western-blot analysis and caspase-3 enzyme activity was measured. Notably, compounds 1f and 2f showed a significant cytotoxic effect in all three cancer cells and did not display cytotoxicity on NIH-3T3 normal cells. (IC50 = 26.66 ± 2.73 μM on HeLa, IC50 = 9.41 ± 2.19 μM on MCF-7, IC50 = 5.17 ± 3.54 μM on MKN-45 for 1f. IC50 = 17.96 ± 3.34 μM on HeLa, IC50 = 0.69 ± 0.13 μM on MCF-7, IC50 = 0.88 ± 0.16 μM on MKN-45 for 2f.) Moreover, 1f and 2f upregulated protein expression level of Bax and downregulated protein expression level of Bcl-2 in cells. Similarly, caspase-3 activity was increased in cells via 1f and 2f. It can be concluded that 1f and 2f activated apoptosis by inducing mitochondrial apoptotic proteins in HeLa, MCF-7, MKN-45. This could be potentially new anti-cancer derivatives and used to contribute to new therapeutic development.
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Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | - Burçin İrem Abas
- Department of Biochemistry, School of Medicine, Aydin Adnan Menderes University, Aydın, Turkey
| | - Özge Çevik
- Department of Biochemistry, School of Medicine, Aydin Adnan Menderes University, Aydın, Turkey
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Aras B, Adıgüzel E, Tok F. Blind Versus Ultrasound Guidance Injections: Lateral Femoral Cutaneous Nerve Blockage Revisited. tnd 2019. [DOI: 10.4274/tnd.galenos.2019.05935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Kocyigit-Kaymakcioglu B, Yazici SS, Tok F, Dikmen M, Engür S, Oruc-Emre EE, Iyidogan A. Synthesis and Anticancer Activity of New Hydrazide-hydrazones and Their Pd(II) Complexes. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180815666180816124102] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Background:
Hydrazones, one of the important classes of organic molecules, are pharmaceutical
agents comprising –CO-NH-N=CH- group in the structure therefore and exhibiting significant
biological activity.
Methods:
5-Chloro-N’-[(substituted)methylidene] pyrazine-2-carbohydrazide (3a-g) and their Pd(II)
complexes (4a-h) were synthesized and investigated in vitro anticancer activity on A549, Caco2 cancer
and normal 3T3 fibroblast cell lines, using the MTT assay.
Results:
Anticancer activity screening results revealed that some compounds showed remarkable cytotoxic
effect. Among them, 5-chloro-N'-[(4-hydroxyphenyl)methylidene] pyrazine-2-carbohydrazide
(3c) displayed higher cytotoxic activity against A549 cancer cell line than the reference drug cisplatin.
Conclusion:
Compound 3c showed high cytotoxic activity against A549 cancer cell line but it showed
low cytotoxic effect against normal 3T3 fibroblast cell line. Antiproliferative and antimetastatic effects
of 3c were determined by the real-time monitoring of cell proliferative system (RTCA DP). The cell
proliferation, metastatic and invasive activities of A549 cells were decreased due to increased concentration
of 3c.
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Affiliation(s)
| | - Senem Sinem Yazici
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul-34668, Turkey
| | - Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul-34668, Turkey
| | - Miriş Dikmen
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Eskisehir-26470, Turkey
| | - Selin Engür
- Department of Pharmacology, Faculty of Pharmacy, Anadolu University, Eskisehir-26470, Turkey
| | - Emine Elçin Oruc-Emre
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Gaziantep-27310, Turkey
| | - Aysegul Iyidogan
- Department of Chemistry, Faculty of Arts and Sciences, Gaziantep University, Gaziantep-27310, Turkey
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Tok F, Ilhan R, Günal S, Ballar-Kirmizibayrak P, Koçyiğit-Kaymakçioğlu B. Design, Synthesis and Evaluation of the Biological Activities of Some New Carbohydrazide and Urea Derivatives. Turk J Pharm Sci 2018; 15:304-308. [PMID: 32454674 DOI: 10.4274/tjps.64935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/21/2017] [Indexed: 12/01/2022]
Abstract
Objectives Urea and carbohydrazide derivatives are important compounds exhibiting cytotoxic activities. In this study, a series of new urea and carbohydrazide derivatives containing an pyridine ring were synthesized and evaluated for cytotoxic activity. Materials and Methods The proposed structures of the synthesized compounds were confirmed using elemental analysis, IR, and 1H-NMR spectroscopic techniques. The cytotoxic potencies of synthesized compounds were determined using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay (MTT) on BRCA mutant-carrying HCC1937 and Capan-1 cell lines, as well as on MCF7, HeLa, and MRC5 cells. Results 3a, 3b, 3c and 3d showed cytotoxic activity against all cancer cell lines. Conclusion Our data indicate that compounds 3a-d are more selective to cancer cells compared with nontumoral fibroblasts; however, these compounds are not more potent on HR defective cells with BRCA mutants.
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Affiliation(s)
- Fatih Tok
- Marmara University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, İstanbul, Turkey
| | - Recep Ilhan
- Ege University, Faculty of Pharmacy, Department of Biochemistry, İzmir, Turkey
| | - Selin Günal
- Ege University, Faculty of Pharmacy, Department of Biochemistry, İzmir, Turkey
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Kaymak B, Kara M, Tok F, Ulaşli AM, Öztürk GT, Chang KV, Hsi̇ao MY, Hung CY, Yağiz On A, Özçakar L. Sonographic guide for botulinum toxin injections of the lower limb: EUROMUSCULUS/USPRM spasticity approach. Eur J Phys Rehabil Med 2018; 54:486-498. [DOI: 10.23736/s1973-9087.17.04667-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Karakuş S, Tok F, Türk S, Salva E, Tatar G, Taskın-Tok T, Kocyigit-Kaymakcıoglu B. Synthesis, anticancer activity and ADMET studies of N-(5-methyl-1,3,4-thiadiazol-2-yl)-4-[(3-substituted)ureido/thioureido] benzenesulfonamide derivatives. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2018.1452924] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- S. Karakuş
- Department of Pharmaceutical Chemistry, Marmara University, Haydarpaşa, Istanbul, Turkey
| | - F. Tok
- Department of Pharmaceutical Chemistry, Marmara University, Haydarpaşa, Istanbul, Turkey
| | - S. Türk
- Department of Pharmaceutical Chemistry, Marmara University, Haydarpaşa, Istanbul, Turkey
| | - E. Salva
- Department of Pharmaceutical Technology, Inönü University, Malatya, Turkey
| | - G. Tatar
- Department of Bioinformatics and Computational Biology, Gaziantep University, Gaziantep, Turkey
| | - T. Taskın-Tok
- Department of Chemistry, Gaziantep University, Gaziantep, Turkey
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Tok F, Kocyigit-Kaymakcioglu B, Tabanca N, Estep AS, Gross AD, Geldenhuys WJ, Becnel JJ, Bloomquist JR. Synthesis and structure-activity relationships of carbohydrazides and 1,3,4-oxadiazole derivatives bearing an imidazolidine moiety against the yellow fever and dengue vector, Aedes aegypti. Pest Manag Sci 2018; 74:413-421. [PMID: 28869331 PMCID: PMC5817975 DOI: 10.1002/ps.4722] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/25/2017] [Accepted: 08/28/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND 1,3,4-Oxadiazole and imidazolidine rings are important heterocyclic compounds exhibiting a variety of biological activities. In this study, novel compounds with oxadiazole and imidazolidine rings were synthesized from 3-(methylsulfonyl)-2-oxoimidazolidine-1-carbonyl chloride and screened for insecticidal activities. The proposed structures of the 17 synthesized compounds were confirmed using elemental analysis, infrared (IR), proton nuclear magnetic resonance (1 H-NMR), and mass spectroscopy. RESULTS None of the compounds showed larvicidal activity at the tested concentrations against first-instar Aedes aegypti larvae. However, nine compounds exhibited promising adulticidal activity, with mortality rates of ≥80% at 5 µg per mosquito. Further dose-response bioassays were undertaken to determine median lethal dose (LD50 ) values. Compounds 1, 2b, 2c, 2d, 2 g, 3b, 3c, 3 g, and 3 h were effective, with typical LD50 values of about 5 - 10 µg per mosquito against female Ae. aegypti. Compounds 2c (bearing a nitro group on the aromatic ring; LD50 = 2.80 ± 0.54 µg per mosquito) and 3 h (double halogen groups at 2,4 position on the phenyl ring; LD50 = 2.80 ± 0.54 µg per mosquito) were the most promising compounds. CONCLUSION Preliminary mode of action studies failed to show consistent evidence of either neurotoxic or mitochondria-directed effects. Further chemical synthesis within this series may lead to the development of new effective insecticides. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Fatih Tok
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Marmara University, Istanbul, Turkey
| | | | - Nurhayat Tabanca
- Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
- Center for Medical, Agricultural, and Veterinary Entomology, USDA, ARS, Gainesville, FL, USA
| | - Alden S Estep
- Center for Medical, Agricultural, and Veterinary Entomology, USDA, ARS, Gainesville, FL, USA
- Navy Entomology Center of Excellence, CMAVE Detachment, Gainesville, FL, USA
| | - Aaron D Gross
- Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
| | - Werner J Geldenhuys
- Department of Pharmaceutical Sciences, School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - James J Becnel
- Center for Medical, Agricultural, and Veterinary Entomology, USDA, ARS, Gainesville, FL, USA
| | - Jeffrey R Bloomquist
- Department of Entomology and Nematology, Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
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Eroğlu A, Sarı E, Cüce F, Tok F, Atabey C, Düz B. The investigation of the role of the facet joint angle in the development of L5-S1 spondylolysis in young men. Turk J Phys Med Rehabil 2017; 63:253-258. [PMID: 31453462 PMCID: PMC6648250 DOI: 10.5606/tftrd.2017.295] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 08/07/2016] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVES This study aims to evaluate facet tropism in younger patients with lumbar spondylolysis and to investigate the role of facet tropism in the development of spondylolysis. PATIENTS AND METHODS Between February 2013 and December 2015, a total of 102 male patients with bilateral L5 pars defect including 53 with spondylolysis and 49 control subjects were included in this case-control study. The facet joint angles were measured bilaterally and axially at the level of L3-4, L4-5, L5-S1 using computed tomography (CT). The classification was made as follows: A difference between two reciprocal facet joint angles of <6° indicated no tropism, 6°-12° indicated moderate tropism, and >12° indicated severe tropism. RESULTS A total of 612 angles including 318 facet joint angles from 53 patients with spondylolysis and 294 facet joint angles from 49 control subjects were measured. L3-4 measurements in the control group showed no tropism in 87.8% (n=43), moderate tropism in 12.2% (n=6), and severe tropism in 0% (n=0). L4-5 measurements in control group showed no tropism in 79.6% (n=39), moderate tropism in 20.4% (n=10), and severe tropism in 0% (n=0). L5-S1 measurements in the control group showed no tropism in 69.4% (n=34), moderate tropism in 28.6% (n=14), and severe tropism in 2.0% (n=1). The mean facet joint angles in the spondylosis group were 32.9±5.1°, 37.5±5.4°, and 41.2±7.8° at the levels of L3-4, L4-5, and L5-S1, respectively. The mean facet joint angles of the control group were 33.2±5.7°, 39.7±4.9°, and 42.2±4.9° at the levels of L3-4, L4-5, and L5-S1, respectively, indicating no significant difference between the right and left mean facet joint angles between the groups (p>0.05). The frequency of facet tropism and the difference between right and left facet joint angles for all three levels were significantly higher in the spondylolysis group (p<0.05). Facet tropism at the level of L5-S1 was significantly more frequent than facet tropism at L3-4 level (p<0.05). CONCLUSION Our study results show that the rate of facet joint tropism is higher in the patients with spondylolysis, suggesting that facet tropism seems to play a role in the etiology of spondylolysis as a predisposing factor.
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Affiliation(s)
- Ahmet Eroğlu
- Department of Neurosurgery, Van Military Hospital, Van, Turkey
| | - Enes Sarı
- Department of Orthopedics and Traumatology, Aksaz Military Hospital, Muğla, Turkey
| | - Ferhat Cüce
- Department of Radiology, Mevki Military Hospital, Ankara, Turkey
| | - Fatih Tok
- Department of Physical Medicine and Rehabilitation, TSK Rehabilitation Center, Ankara, Turkey
| | - Cem Atabey
- Department of Neurosurgery, Mevki Military Hospital, Ankara, Turkey
| | - Bülent Düz
- Department of Neurosurgery, İstanbul Sultan Abdülhamid Han Training and Research Hospital, İstanbul, Turkey
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Kara M, Kaymak B, Ulaşli AM, Tok F, Öztürk GT, Chang KV, Hsiao MY, Hung CY, Yağiz On A, Özçakar L. Sonographic guide for botulinum toxin injections of the upper limb: EUROMUSCULUS/USPRM spasticity approach. Eur J Phys Rehabil Med 2017; 54:469-485. [PMID: 28264546 DOI: 10.23736/s1973-9087.17.04664-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The pertinent literature lacks overt technical data for optimal upper limb muscle botulinum toxin injections using ultrasound (US) imaging. Therefore, this guide is prepared for the commonly injected muscles of the upper limb and the shoulder girdle mainly in spasticity. It includes clinical information, anatomical description and explanation regarding the US imaging of several muscles. The figures have been organized to orient the readers on the innervation, injection sites, probe positioning and the US images simultaneously.
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Affiliation(s)
- Murat Kara
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
| | - Bayram Kaymak
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
| | - Alper M Ulaşli
- Ankara Physical Medicine and Rehabilitation, Training and Research Hospital, Ankara, Turkey
| | - Fatih Tok
- Gaziler Physical Medicine and Rehabilitation, Training and Research Hospital, Ankara, Turkey
| | - Gökhan T Öztürk
- Ankara Physical Medicine and Rehabilitation, Training and Research Hospital, Ankara, Turkey
| | - Ke-Vin Chang
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ming-Yen Hsiao
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chen-Yu Hung
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital and Community and Geriatric Research Center, Bei-Hu Branch, Taipei, Taiwan
| | - Arzu Yağiz On
- Department of Physical and Rehabilitation Medicine, Ege University Medical School, İzmir, Turkey
| | - Levent Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey
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Uğurlu FG, Sezer N, Aktekin L, Fidan F, Tok F, Akkuş S. The effects of acupuncture versus sham acupuncture in the treatment of fibromyalgia: a randomized controlled clinical trial. Acta Reumatol Port 2017; 42:32-37. [PMID: 28371571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE The aim of this manuscript is to determine and to compare the efficacy of real acupuncture with sham acupuncture on fibromyalgia (FM) treatment. METHODS 50 women with FM were randomized into 2 groups to receive either true acupuncture or sham acupuncture. Subjects were evaluated with VAS (at night, at rest, during activity), SF-36, Fibromyalgia Impact Questionnaire (FIQ), Beck Depression scale (BDI), Fatigue Severity Scale (FSS) at baseline, 1 month and 2 months after the 1st session. Patients in both groups received 3 sessions in the 1st week, 2 sessions/week during 2 weeks and 1 session/week in the following 5 weeks (totally 12 sessions). RESULTS 25 subjects with a mean age of 47,28±7,86 years were enrolled in true acupuncture group and 25 subjects with a mean age of 43,60±8,18 years were enrolled in sham acupuncture group. Both groups improved significantly in all parameters 1 month after the 1st session and this improvement persisted 2 months after the 1st session (p<0,05). However, real acupuncture group had better scores than sham acupuncture score in terms of all VAS scores, BDI and FIQ scores either 1 or 2 months after the 1st session (all p<0,05). CONCLUSION Acupuncture significantly improved pain and symptoms of FM. Although sham effect was important, real acupuncture treatment seems to be effective in treatment of FM.
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Yildirim P, Gultekin A, Yildirim A, Karahan AY, Tok F. Extracorporeal shock wave therapy versus corticosteroid injection in the treatment of trigger finger: a randomized controlled study. J Hand Surg Eur Vol 2016; 41:977-983. [PMID: 26763271 DOI: 10.1177/1753193415622733] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
UNLABELLED The purpose of this study was to compare the efficacies of extracorporeal shock wave therapy and corticosteroid injection for the management of trigger finger. In this prospective randomized clinical trial, 40 patients with actively correctable trigger fingers were randomly assigned to extracorporeal shock wave therapy (1000 impulses and 2.1 bar) or injection groups. The effectiveness of the treatment was assessed using cure rates, a visual analogue scale, the frequency of triggering, the severity of triggering, the functional impact of triggering, and the Quick-Disabilities of the Arm, Shoulder, and Hand questionnaire at 1, 3, and 6 months after treatment. An intention-to- treat analysis was used in this study. Both groups demonstrated statistically significant improvements in all outcome measures after treatment. The intention-to-treat analyses showed no between-group differences for cure rates, pain, and functional status at follow-up. We conclude that extracorporeal shock wave therapy could be a non-invasive option for treating trigger finger, especially for those patients who wish to avoid steroid injections. LEVEL OF EVIDENCE Level II.
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Affiliation(s)
- P Yildirim
- 1 Department of Physical Medicine and Rehabilitation, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - A Gultekin
- 2 Department of Orthopedics and Traumatology, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - A Yildirim
- 3 Department of Plastic Reconstructive and Aesthetic Surgery, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - A Y Karahan
- 4 Department of Physical Medicine and Rehabilitation, Konya Beyhekim State Hospital, Kocaeli, Turkey
| | - F Tok
- 5 Department of Physical Medicine and Rehabilitation, Gulhane Military Medical Academy, Kocaeli, Turkey
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Karahan AY, Tok F, Yildirim P, Ordahan B, Turkoglu G, Sahin N. The Effectiveness of Exergames in Patients with Ankylosing Spondylitis: A Randomized Controlled Trial. ADV CLIN EXP MED 2016; 25:931-936. [PMID: 28028958 DOI: 10.17219/acem/32590] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 10/23/2014] [Accepted: 11/04/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND Exergames are a well-known type of game based on a virtual avatar's body movements. This hightech approach promotes an active lifestyle. OBJECTIVES The aim of this randomized controlled trial was to evaluate the effects of exergames on pain, disease activity, functional capacity and quality of life in patients with ankylosing spondylitis (AS). MATERIAL AND METHODS The study involved 60 patients, who were randomized into either the exergame group (EG) or the control group (CG). The EG patients engaged in exergaming, and CG patients did not engage in any exercises. The exergaming sessions were performed five times a week for eight weeks (40 sessions in total). The patients were assessed before and after the eight-week program on a visual analog scale (VAS), the Bath Ankylosing Spondylitis Functional Index (BASFI), the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and the Ankylosing Spondylitis Quality of Life (ASQOL) questionnaire. RESULTS A statistically significant improvement was observed in VAS, BASFI, BASDAI and ASQoL scores in the EG group after completion of the exercise program (p < 0.05). CONCLUSIONS This study is a first step in investigating the possibilities of using an exergame platform to help patients with spondyloarthropathies to adopt a more physically active lifestyle. The results of this study suggest that exergames increase physical activity and decrease the pain scores in AS patients and also could, therefore, be feasible and safe.
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Affiliation(s)
- Ali Yavuz Karahan
- Department of Physical Medicine and Rehabilitation, Beyhekim State Hospital, Konya, Turkey
| | - Fatih Tok
- Department of Physical Medicine and Rehabilitation, Iskenderun Marine Regiment Medical Center, Iskenderun, Hatay, Turkey
| | - Pelin Yildirim
- Department of Physical Medicine and Rehabilitation, Kocaeli Derince Training and Research Hospital, Kocaeli, Turkey
| | - Banu Ordahan
- Department of Physical Medicine and Rehabilitation, Beyhekim State Hospital, Konya, Turkey
| | - Gozde Turkoglu
- Department of Physical Medicine and Rehabilitation, Beyhekim State Hospital, Konya, Turkey
| | - Nilay Sahin
- Department of Physical Medicine and Rehabilitation, Balikesir University, Balikesir, Turkey
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Ünal HU, Tok F, Adıgüzel E, Gezer M, Aydın İ, Yılmaz B, Oğuz Y. Ultrasonographic evaluation of the femoral cartilage thickness in patients with chronic renal failure. Ren Fail 2016; 38:600-4. [PMID: 26905953 DOI: 10.3109/0886022x.2016.1149685] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To investigate the effects of chronic renal failure (CRF) on the distal femoral cartilage thickness by using ultrasonography and to determine the relationship between cartilage thickness and certain disease-related parameters. DESIGN Fifty-seven CRF patients (41 male and 16 female) (mean [SD] age, 44.7 [12.1] years) and 60 healthy controls (41 male and 19 female) (mean [SD] age, 43.5 [13.3] years) were enrolled in this study. Demographic and clinical characteristics were recorded. Cartilage thickness measurements were taken from the medial and lateral condyles, and intercondylar areas of both knees. RESULTS Groups were similar in terms of age, weight, height, body mass index and gender (all p>0.05). The mean cartilage thickness was found to be less in CRF patients than in controls (statistically significant for medial condyles and intercondylar areas both in right and the left knees [all p<0.05]). Cartilage thickness showed no correlation with eGFR, and with the levels of serum urea, creatinine, calcium, magnesium, phosphor, hemoglobin, uric acid and as well as steroid use (all p>0.05) in CRF patients. CONCLUSION In the light of our findings, we imply that patients with CRF have thinner femoral cartilage than healthy controls. This result may support the view that patients with CRF are at increased risk for developing early knee osteoarthritis. Last but not least, clinicians should be aware of the importance of rehabilitation strategies aimed at decreasing onset and progression of knee osteoarthritis in patients with CRF.
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Affiliation(s)
- Hilmi Umut Ünal
- a Department of Nephrology , Gulhane Military Medical Academy , Ankara , Turkey
| | - Fatih Tok
- b Department of Physical Medicine and Rehabilitation , Gulhane Military Medical Academy , Ankara , Turkey
| | - Emre Adıgüzel
- b Department of Physical Medicine and Rehabilitation , Gulhane Military Medical Academy , Ankara , Turkey
| | - Mustafa Gezer
- a Department of Nephrology , Gulhane Military Medical Academy , Ankara , Turkey
| | - İbrahim Aydın
- c Department of Biochemistry , Gulhane Military Medical Academy , Ankara , Turkey
| | - Bilge Yılmaz
- b Department of Physical Medicine and Rehabilitation , Gulhane Military Medical Academy , Ankara , Turkey
| | - Yusuf Oğuz
- a Department of Nephrology , Gulhane Military Medical Academy , Ankara , Turkey
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Özçakar L, Kara M, Chang KV, Tok F, Hung CY, Akkaya N, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for knee. Eur J Phys Rehabil Med 2015; 51:641-646. [PMID: 26351105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned knee structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Akkaya N, Hung CY, Tok F, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for hip. Eur J Phys Rehabil Med 2015; 51:635-640. [PMID: 26351107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned hip structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Bayram Çarli A, Hung CY, Tok F, Wu CH, Akkaya N, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic Scanning Protocols for Ankle and foot. Eur J Phys Rehabil Med 2015; 51:647-653. [PMID: 26351106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned ankle/foot structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Hung CY, Tekın L, Ulaşlı AM, Wu CH, Tok F, Hsıao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for elbow. Eur J Phys Rehabil Med 2015; 51:485-489. [PMID: 26158916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned elbow structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Ulaşlı AM, Hung CY, Tekin L, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang T, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for wrist and hand. Eur J Phys Rehabil Med 2015; 51:479-484. [PMID: 26158917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned wrist/hand structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Tekin L, Hung CY, Ulaülı AM, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for shoulder. Eur J Phys Rehabil Med 2015; 51:491-496. [PMID: 26158915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned shoulder structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Akarsu S, Karadaş Ö, Tok F, Levent Gül H, Eroğlu E. Single versus repetitive injection of lignocaine in the management of carpal tunnel syndrome--a randomized controlled trial. J Hand Surg Eur Vol 2015; 40:179-83. [PMID: 25061062 DOI: 10.1177/1753193413517326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The aim of this study was to determine the efficacy of single versus repetitive injection of lignocaine into the carpal tunnel for the management of carpal tunnel syndrome. The 42 patients included were randomly assigned to two Groups: group 1 was injected with 4 mL of 1% lignocaine once and Group 2 was injected with 4 mL of 1% lignocaine twice a week for 2 weeks. Clinical and electrophysiological evaluations were performed at the study onset, and at 6 and 12 weeks following the final injection. Initially, the groups were similar with respect to clinical and electrophysiological findings. All parameters in Group 2 improved 6 weeks post treatment (p < 0.05), and these improvements persisted at 12 weeks post treatment (p < 0.05). Repetitive local lignocaine injection was effective in reducing the symptoms of carpal tunnel syndrome and improving electrophysiological findings.
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Affiliation(s)
- S Akarsu
- Department of Physical Medicine & Rehabilitation, Haydarpaşa Training Hospital, İstanbul, Turkey
| | - Ö Karadaş
- Neurology Service, Erzincan Military Hospital, Erzincan, Turkey
| | - F Tok
- Physical Medicine & Rehabilitation Service, İskenderun Military Hospital, İskenderun, Turkey
| | - H Levent Gül
- Department of Neurology, Kartal Training Hospital, İstanbul, Turkey
| | - E Eroğlu
- Department of Neurology, Gulhane Military Medical Academy, Ankara, Turkey
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Özçakar L, Tunç H, Öken Ö, Ünlü Z, Durmuş B, Baysal Ö, Altay Z, Tok F, Akkaya N, Doğu B, Çapkın E, Bardak A, Çarlı AB, Buğdaycı D, Toktaş H, Dıraçoğlu D, Gündüz B, Erhan B, Kocabaş H, Erden G, Günendi Z, Kesikburun S, Omaç ÖK, Taşkaynatan MA, Şenel K, Uğur M, Yalçınkaya EY, Öneş K, Atan Ç, Akgün K, Bilgici A, Kuru Ö, Özgöçmen S. Femoral cartilage thickness measurements in healthy individuals: learning, practicing and publishing with TURK-MUSCULUS. J Back Musculoskelet Rehabil 2015; 27:117-24. [PMID: 24284270 DOI: 10.3233/bmr-130441] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND OBJECTIVES Measurement of the femoral cartilage thickness by using in-vivo musculoskeletal ultrasonography (MSUS) has been previously shown to be a valid and reliable method in previous studies; however, to our best notice, normative data has not been provided before in the healthy population.The aim of our study was to provide normative data regarding femoral cartilage thicknesses of healthy individuals with collaborative use of MSUS. METHODS This is across-sectional study run at Physical and Rehabilitation Medicine Departments of 18 Secondary and Tertiary Centers in Turkey. 1544 healthy volunteers (aged between 25-40 years) were recruited within the collaboration of TURK-MUSCULUS (Turkish Musculoskeletal Ultrasonography Study Group). Subjects who had a body mass index value of less than 30 and who did not have signs and symptoms of any degenerative/inflammatory arthritis or other rheumatic diseases, history of knee trauma and previous knee surgery were enrolled. Ultrasonographic measurements were performed axially from the suprapatellar window by using linear probes while subjects' knees were in maximum flexion. Three (mid-point) measurements were taken from both knees (lateral condyle, intercondylar area, medial condyle). RESULTS A total of 2876 knees (of 817 M, 621 F subjects) were taken into analysis after exclusion of inappropriate images. Mean cartilage thicknesses were significantly lower in females than males (all p< 0.001). Thickness values negatively correlated with age; negatively (females) and positively (males) correlated with smoking. Men who regularly exercised had thicker cartilage than who did not exercise (all p < 0.05). Increased age (in both sexes) and absence of exercise (males) were found to be risk factors for decreased cartilage thicknesses. CONCLUSION Further data pertaining to other countries would be interesting to uncover whether ethnic differences also affect cartilage thickness. Collaborative use of MSUS seems to be promising in this regard.
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Affiliation(s)
- Levent Özçakar
- Department of Physical Medicine and Rehabilitation, Hacettepe University Medical School, Ankara, Turkey
| | - Hakan Tunç
- PMR Clinic, Ankara PMR Training and Research Hospital, Ankara, Turkey
| | - Öznur Öken
- PMR Clinic, Ankara PMR Training and Research Hospital, Ankara, Turkey
| | - Zeliha Ünlü
- Department of PMR, Celal Bayar University Medical School, Manisa, Turkey
| | - Bekir Durmuş
- Department of PMR, Inönü University Medical School, Malatya, Turkey
| | - Özlem Baysal
- Department of PMR, Inönü University Medical School, Malatya, Turkey
| | - Zuhal Altay
- Department of PMR, Inönü University Medical School, Malatya, Turkey
| | - Fatih Tok
- Department of PMR, Gülhane Military Medical Academy, Ankara, Turkey
| | - Nuray Akkaya
- Department of PMR, Pamukkale University Medical School, Denizli, Turkey
| | - Beril Doğu
- PMR Clinic, Şişli Etfal Training and Research Hospital, Istanbul, Turkey
| | - Erhan Çapkın
- Department of PMR, Karadeniz Technical University Medical School, Trabzon, Turkey
| | - Ayşenur Bardak
- PMR Clinic, Istanbul PMR Training and Research Hospital, Istanbul, Turkey
| | | | - Derya Buğdaycı
- PMR Clinic, Istanbul PMR Training and Research Hospital, Istanbul, Turkey
| | - Hasan Toktaş
- Department of PMR, Afyon Kocatepe University Medical School, Afyonkarahisar, Turkey
| | - Demirhan Dıraçoğlu
- Department of PMR, Istanbul University Istanbul Medical School, Istanbul, Turkey
| | - Berrin Gündüz
- PMR Clinic, Istanbul PMR Training and Research Hospital, Istanbul, Turkey
| | - Belgin Erhan
- PMR Clinic, Istanbul PMR Training and Research Hospital, Istanbul, Turkey
| | - Hilal Kocabaş
- PMR Clinic, Konya Training and Research Hospital, Konya, Turkey
| | - Gül Erden
- Department of PMR, Istanbul University Cerrahpaşa Medical School, Istanbul, Turkey
| | - Zafer Günendi
- Department of PMR, Gazi University Medical School, Ankara, Turkey
| | | | | | | | - Kazım Şenel
- Department of PMR, Atatürk University Medical School, Erzurum, Turkey
| | - Mahir Uğur
- Department of PMR, Atatürk University Medical School, Erzurum, Turkey
| | | | - Kadriye Öneş
- PMR Clinic, Istanbul PMR Training and Research Hospital, Istanbul, Turkey
| | - Çiğdem Atan
- Department of PMR, Gazi University Medical School, Ankara, Turkey
| | - Kenan Akgün
- Department of PMR, Istanbul University Cerrahpaşa Medical School, Istanbul, Turkey
| | - Ayhan Bilgici
- Department of PMR, Ondokuz Mayıs University Medical School, Samsun, Turkey
| | - Ömer Kuru
- Department of PMR, Ondokuz Mayıs University Medical School, Samsun, Turkey
| | - Salih Özgöçmen
- Division of Rheumatology, Department of PMR, Erciyes University Medical School, Kayseri, Turkey
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Özçakar L, Tok F, Murat Ulaşli A, Kara M, Bayram Çarli A, Akarsu S. What actually changed after the use of musculoskeletal ultrasound? An international survey study in PRM. Eur J Phys Rehabil Med 2014; 50:469-471. [PMID: 24710355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- L Özçakar
- Hacettepe University Medical School, Department of Physical and Rehabilitation Medicine, Ankara, Turkey -
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Ustun N, Tok F, Kalyoncu U, Motor S, Yuksel R, Yagiz AE, Guler H, Turhanoglu AD. Sclerostin and Dkk-1 in patients with ankylosing spondylitis. Acta Reumatol Port 2014; 39:146-151. [PMID: 25111416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To determine the serum Dickkopf-related protein 1 (Dkk-1) and sclerostin levels, and their relationship to structural damage and disease activity in patients with ankylosing spondylitis (AS), as well as to compare the serum Dkk-1 and sclerostin levels in patients receiving and not receiving anti-TNF-a treatment. MATERIALS AND METHOds: This cross-sectional study included 44 AS patients and 41 healthy age- and gender- -matched controls. Demographic data, disease activity parameters, and Bath Ankylosing Spondylitis Radiologic Index (BASRI) scores were recorded. Serum Dkk-1 and sclerostin levels were measured using commercially available ELISA. RESULTS Serum Dkk-1 levels were lower (P > 0.05) and sclerostin levels were significantly lower (P < 0.05) in the AS patients than in the controls. Dkk-1 and sclerostin levels were similar in the patients that did and didn't receive anti-TNF-a treatment, and in the patients with active and inactive disease (P > 0.05). There wasn’t a correlation between serum Dkk-1 or sclerostin levels, and disease activity indices (P > 0.05). BASRI scores did not correlate with serum Dkk-1 or sclerostin levels (P > 0.05). DISCUSSIOn: Sclerostin expression is impaired in AS, but this is not the case for Dkk-1. The lack of an association between Dkk-1 or sclerostin levels, and anti-TNF-a treatment, disease activity indices, and radiological damage might indicate that neither the Dkk-1 nor sclerostin level induce inflammation and radiological damage in AS patients. Pathologic bone formation in AS might be due to molecular dysfunction of sclerostin and Dkk-1 at the cellular level.
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Ulaşli AM, Tok F, Karaman A, Yaman F, Dikici O, Oruç S, Ozçakar L. Nerve enlargement after cold exposure: a pilot study with ultrasound imaging. Muscle Nerve 2014; 49:502-5. [PMID: 23835853 DOI: 10.1002/mus.23947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 06/28/2013] [Accepted: 06/30/2013] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Changes of electrophysiogical parameters with regard to cold have been studied intensively but not the morphology of nerves. We explored the effects of cold exposure on median nerve morphology. METHODS Cross-sectional area (CSA) and depth of the right median nerve were assessed at the carpal tunnel and mid-forearm levels before and after 15 min ice-pack application in 34 healthy volunteers. RESULTS After cooling, mean CSA measurements increased at the carpal tunnel and mid-forearm levels (from 8.00 to 8.85 and 6.64 to 7.55, respectively, P < 0.05); however, the depth values were similar. CONCLUSIONS These preliminary results revealed that cold exposure may cause acute nerve swelling. Further studies with larger samples will be necessary to confirm our findings, to correlate them with electrophysiological data, and to explore when/how the nerve edema resolves.
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Affiliation(s)
- Alper Murat Ulaşli
- Afyon Kocatepe Üniversitesi Hastanesi Fiziksel Tıp ve Rehabilitasyon Bölümü, 03200, Afyonkarahisar, Turkey
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Ustün N, Tok F, Yagz AE, Kizil N, Korkmaz I, Karazincir S, Okuyucu E, Turhanoglu AD. Ultrasound-guided vs. blind steroid injections in carpal tunnel syndrome: A single-blind randomized prospective study. Am J Phys Med Rehabil 2013; 92:999-1004. [PMID: 23811617 DOI: 10.1097/phm.0b013e31829b4d72] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The aim of this study was to compare the efficacy and the safety of ultrasound (US)-guided vs. blind steroid injections in patients with carpal tunnel syndrome (CTS). DESIGN This prospective randomized single-blind clinical trial included 46 patients with CTS (46 affected median nerves). The subjects were randomized-to either the US-guided or the blind injection group-before they received 40 mg of methylprednisolone. They were evaluated using the Boston Carpal Tunnel Questionnaire symptom/function at baseline and at 6 wks and 12 wks after injection, and the side effects were noted. RESULTS The symptom severity and functional status scores improved significantly in both groups at 6 wks after treatment, and these improvements persisted at 12 wks after treatment (all P < 0.05). The improvement in symptom severity scores in the US-guided group at 12 wks was higher than in the palpation-guided group (P < 0.05). Average time to symptom relief was shorter in the US-guided group (P < 0.05). There was no significant difference between the two groups in terms of side effects (P > 0.05). CONCLUSIONS Although both US-guided and blind steroid injections were effective in reducing the symptoms of CTS and improving the function, an earlier onset/better improvement of symptom relief suggests that US-guided steroid injection may be more effective than are blind injections in CTS.
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Affiliation(s)
- Nilgün Ustün
- From the Department of Physical Medicine and Rehabilitation (NU, AEY, NK, ADT), Department of Radiology (IK, SK), and Department of Neurology (EO), Faculty of Medicine, Mustafa Kemal University, Hatay, Turkey; and Physical Medicine and Rehabilitation Clinic, İskenderun Military Hospital, Hatay, Turkey (FT)
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Karadaş O, Gul H, Akarsu S, Tok F, Fırtına S. Single versus repetitive injection of lidocaine HCl in management of/INS; carpal tunnel syndrome. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Akarsu S, Tekin L, Ay H, Carli AB, Tok F, Simşek K, Kiralp MZ. The efficacy of hyperbaric oxygen therapy in the management of chronic fatigue syndrome. Undersea Hyperb Med 2013; 40:197-200. [PMID: 23682549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE Chronic fatigue syndrome (CFS) is a chronic disease with social components that ensue secondary to the incapacity of the person to fulfill work, social and family responsibilities. Currently, there is no consensus regarding its treatment. The aim of this study was to determine the efficacy of hyperbaric oxygen (HBO2) therapy in CFS. DESIGN Sixteen patients included in the study were diagnosed with CFS according to the Fukuda criteria. Patients received 15 treatment sessions of HBO2 therapy over a period of three consecutive weeks (five days per week). The outcome measures (visual analog fatigue scale (VAFS). Fatigue Severity Scale (FSS) and Fatigue Quality of Life Score (FQLS) were assessed before the treatment and after completion of the 15 sessions. RESULTS HBO2 therapy was well tolerated, with no complications. After treatment, patients' scores were found to have improved with respect to VAFS, FSS and FQLS (all p<0.005). CONCLUSIONS We ,may infer that HBO2 therapy decreases the severity of symptoms and increases the life quality of CFS patients. It may be a new treatment modality for the management of CFS. However, further studies with larger sample sizes and control groups are definitely awaited.
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Affiliation(s)
- Selim Akarsu
- Gülhane Military Medical Academy Haydarpasa Training Hospital, Department of Physical Medicine and Rehabilitation, Istanbul, Turkey.
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Karadaş Ö, Tok F, Akarsu S, Tekin L, Balaban B. Triamcinolone acetonide vs procaine hydrochloride injection in the management of carpal tunnel syndrome: randomized placebo-controlled study. J Rehabil Med 2013; 44:601-4. [PMID: 22674243 DOI: 10.2340/16501977-0990] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE The aim of this trial was to compare the efficacy of triamcinolone acetonide and procaine HCl with that of placebo in the treatment of carpal tunnel syndrome. DESIGN This prospective, randomized placebo-controlled trial included 57 patients (90 median nerves). Ninety median nerves were randomly assigned to 1 of 3 groups: group 1 was injected with 1 ml 0.09% saline, group 2 was injected with 40 mg triamcinolone acetonide, and group 3 was injected with 4 ml 1% procaine HCl. Clinical and electrophysiological evaluations were performed at study onset, and at 2 and 6 months post-treatment. RESULTS At study onset no significant differences were observed between groups with respect to clinical and electrophysiological parameters. Clinical and electrophysiological evaluations was improved significantly in groups 2 and 3 at post-treatment (p<0.05). No significant changes were observed in group 1 (p>0.05). Moreover, groups 2 and 3 had better scores than group 1 at 2 and 6 months post-treatment(p<0.05). There was no difference between groups 2 and 3 in terms of change scores of any terms at post-treatment (p>0.05). CONCLUSION Triamcinolone acetonide and procaine HCl injections are effective regarding short- and long-term outcomes compared with placebo injections, and procaine HCl injection was as effective as steroid injection.
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Affiliation(s)
- Ömer Karadaş
- Neurology Service, Erzincan Military Hospital, Erzincan, Turkey.
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Akarsu S, Tok F, Tekin L. Concomitant alopecia areata and hypertrichosis after infliximab therapy: rara avis. Acta Reumatol Port 2013; 38:49-50. [PMID: 24131912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present a 37 year-old man with HLA-B27 positive ankylosing spondylitis for the last 3 years. Interestingly, he developed both alopecia areata and hypertrichosis simultaneously following infliximab treatment. Reporting this interesting patient of ours -to our best notice for the first time in the literature- we call attention of clinicians to the contradistinctive effects of anti-TNF-α agents on hair growth cycle.
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Tok F, Balaban B, Yaşar E, Alaca R, Tan AK. The effects of onabotulinum toxin A injection into rectus femoris muscle in hemiplegic stroke patients with stiff-knee gait: a placebo-controlled, nonrandomized trial. Am J Phys Med Rehabil 2012; 91:321-6. [PMID: 22311056 DOI: 10.1097/phm.0b013e3182465feb] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE This study aimed to compare the efficacy of onabotulinum toxin A (onabot) injection into the rectus femoris muscle with that of placebo in the treatment of hemiplegic stroke patients presenting with stiff-knee gait. DESIGN Twenty-five chronic hemiparetic stroke patients presenting with a stiff-knee gait were included in this study. Fifteen patients received 100-125 U of onabot, and 10 patients received placebo into the rectus femoris muscle. Three-dimensional gait analysis, energy expenditure, 10-m and 6-min walk tests, and spasticity level of the rectus femoris were evaluated at baseline and 2 mos posttreatment. RESULTS The mean age of patients who received onabot was 53.86 ± 14.74 yrs and of those who received placebo was 59.00 ± 8.11 yrs. At study onset, groups were similar with respect to all parameters (P > 0.05). We observed significant improvement in knee flexion (7 degrees average) during swing and a reduction in energy cost of 0.8-J/kg per meter response to injection of 100-125 U of onabot into the rectus femoris muscle. Onabot treatment significantly reduced muscle tone and improved knee kinematics, energy expenditure during walking, and functional assessments at 2 mos (P < 0.05); however, placebo had no effects on these parameters. Moreover, maximum knee flexion at swing and energy expenditure in the onabot group was significantly better than placebo at 2 mos (P < 0.05). CONCLUSIONS Our results showed the superiority of onabot over placebo in increasing knee flexion during swing phase and decreasing energy expenditure. The application of onabot into the rectus femoris muscle in stroke patients who presented with stiff-knee gait may be a treatment option to provide independent, safe, and less tiring ambulation.
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Affiliation(s)
- Fatih Tok
- Physical Medicine and Rehabilitation Service, İskenderun Military Hospital, İskenderun, Hatay, Turkey
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Özçakar L, Tok F, Muynck M, Vanderstraeten G. Musculoskeletal ultrasonography in physical and rehabilitation medicine. J Rehabil Med 2012; 44:310-8. [DOI: 10.2340/16501977-0959] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Abstract
Although musculoskeletal ultrasound (MSUS) has emerged as an indispensible tool among physicians involved in musculoskeletal medicine in the last two decades, only recently has it become more attractive to pediatric rheumatologists. Thereafter, the use of MSUS in pediatric rheumatology has started to increase. Yet, an ever-growing body of literature shows parity and even superiority of MSUS when compared to physical examination and other imaging modalities.MSUS is suitable for examination of children of all ages and it has certain advantages over other imaging modalities; as it is cheaper, mobile, instantly accessible bedside, easy to combine with clinical assessment (interactivity) and non-invasive. It does not require sedation, which facilitates repetitive examinations. Assessment of multiple locations is possible during the same session. Agitation is rarely a problem and small children can be seated in their parents' lap or they can even play while being examined.
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Affiliation(s)
- Fatih Tok
- Hacettepe University Medical School, Department of Physical Medicine and Rehabilitation Ankara, Turkey.
| | - Erkan Demirkaya
- Gülhane Military Medical Academy, Department of Pediatrics, Division of Pediatric Nephrology & Rheumatology, Ankara, Turkey
| | - Levent Özçakar
- Hacettepe University Medical School, Department of Physical Medicine and Rehabilitation Ankara, Turkey
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