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Demir I, Yilmaz I, Horoz E, Bozkaya G, Bilgir O. The relationship between stathmin-2 level and metabolic parameters in newly diagnosed type 2 diabetes mellitus patients. Am J Med Sci 2024:S0002-9629(24)01154-6. [PMID: 38575071 DOI: 10.1016/j.amjms.2024.03.023] [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: 02/10/2023] [Revised: 10/19/2023] [Accepted: 03/28/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Stathmin is a phosphoprotein that plays a role in intercellular and intracellular signalization, inflammation, and differentiation. Our aim was to evaluate the stathmin-2 level and its relationship with the metabolic parameters of newly diagnosed type 2 diabetes mellitus (nT2DM) patients. MATERIAL AND METHOD This case-control study included 76 patients with nT2DM and 76 healthy individuals with a normal oral glucose tolerance test who were matched for body mass index (BMI), age, and gender. In addition to laboratory and anthropometric measurements related to type 2 diabetes mellitus (T2DM), stathmin-2 levels were determined using an enzyme-linked immunosorbent assay. RESULTS We observed significantly higher circulating stathmin-2 levels in subjects with T2DM compared to the control group (6.39±1.60 ng/mL and 4.66±0.80 ng/mL, p<0.0001). In patients with metabolic syndrome, circulating stathmin-2 levels were significantly elevated compared to those without metabolic syndrome in both the T2DM and control groups (T2DM: 7.16±1.24 vs 5.06±1.24 ng/mL, p<0.001; Control: 3.84±1.40 vs 3.82±1.40 ng/mL). In both groups, we observed a positive correlation between stathmin-2 levels and BMI and circumference. Moreover, stathmin-2 showed a positive correlation with high-sensitivity C-reactive protein (hs-CRP), homeostatic model assessment of insulin resistance, insulin, fasting blood glucose, hemoglobin A1c, BMI, low-density lipoprotein cholesterol, and total cholesterol. A negative correlation was observed with stathmin-2 and high-density lipoprotein cholesterol. Stathmin-2 did not show any correlation with age, triglyceride, and lactate dehydrogenase. CONCLUSIONS Stathmin-2 levels were found to be elevated in patients with nT2DM and exhibited positive correlations with hyperinsulinaemia, hyperglycaemia, HOMO-IR and hs-CRP levels. These results indicate that stathmin-2 may play a role in T2DM pathogenesis.
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Affiliation(s)
- Ismail Demir
- Health Sciences University, Izmir Bozyaka Training and Research Hospital, Department of Internal Medicine, Karabaglar, Izmir, Turkey.
| | - Ismail Yilmaz
- Izmir Kâtip Celebi University Faculty of Medicine, Department of Pharmacology and Toxicology, Izmir, Turkey
| | - Ersan Horoz
- Izmir Kâtip Celebi University Faculty of Medicine, Department of Pharmacology and Toxicology, Izmir, Turkey
| | - Giray Bozkaya
- Health Sciences University, Izmir Bozyaka Training and Research Hospital, Department of Biochemistry, Izmir, Turkey
| | - Oktay Bilgir
- Health Sciences University, Izmir Bozyaka Training and Research Hospital, Department of Internal Medicine, Karabaglar, Izmir, Turkey
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Demir I, Yilmaz I, Horoz E, Calik B, Bilgir O. Matriptase as a potential biomarker and therapeutic target in newly diagnosed type 2 diabetes mellitus. Ir J Med Sci 2024; 193:223-230. [PMID: 37418107 DOI: 10.1007/s11845-023-03441-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 06/26/2023] [Indexed: 07/08/2023]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder that affects the processing of carbohydrates, proteins, and lipids. In T2DM, metabolic dysregulation occurs through various pathways caused by increased levels of many adipokines and inflammatory chemokines. Impaired insulin-glucose metabolism occurs in tissues. The proteolytic enzyme matriptase is thought to be closely related to glucose metabolism due to its glycolization sites. AIM Our study aimed to evaluate the correlation between matriptase, a proteolytic enzyme, and metabolic parameters in individuals recently diagnosed with T2DM. We also sought to investigate the potential involvement of matriptase in the development of diabetes. METHODS We measured all participants' metabolic laboratory parameters, including basic biochemical tests, hemograms, high-sensitivity C-reactive protein (hsCRP), and matriptase levels. RESULTS Our results showed a significant increase in circulating matriptase levels in individuals with T2DM compared to the control group. Furthermore, individuals with metabolic syndrome had significantly higher matriptase levels than those without in the T2DM and control groups. We also observed that T2DM patients had elevated levels of Homeostatic Model Assessment for Insulin Resistance (HOMA-IR), hsCRP, and matriptase, which displayed a positive correlation. CONCLUSION Our study is the first to report elevated levels of matriptase in individuals with newly diagnosed T2DM and/or metabolic syndrome. Additionally, we found a significant positive correlation between matriptase levels and metabolic and inflammatory parameters, indicating a potential role for matriptase in the pathogenesis of T2DM and glucose metabolism. Further research on matriptase could lead to its recognition as a novel target for investigation.
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Affiliation(s)
- Ismail Demir
- Department of Internal Medicine, Health Sciences University, Izmir, Bozyaka Training and Research Hospital, 35170, Karabaglar, Izmir, Turkey.
| | - Ismail Yilmaz
- Faculty of Medicine, Department of Pharmacology and Toxicology, Izmir Kâtip Celebi University, Izmir, Turkey
| | - Ersan Horoz
- Faculty of Medicine, Department of Pharmacology and Toxicology, Izmir Kâtip Celebi University, Izmir, Turkey
| | - Bulent Calik
- Department of General Surgery, Health Sciences University Izmir, Bozyaka Training and Research Hospital, Izmir, Turkey
| | - Oktay Bilgir
- Department of Internal Medicine, Health Sciences University, Izmir, Bozyaka Training and Research Hospital, 35170, Karabaglar, Izmir, Turkey
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Kaplan M, Yavuz O, Ozdemir E, Alcay Y, Kaya K, Yilmaz I. Architecture of Easy-to-Synthesize and Superior Probe Based on Aminoquinoline Appended Naphthoquinone: Instant and On-Site Cu 2+ Ion Quantification in Real Samples and Unusual Crystal Structure and Logic Gate Operations. Inorg Chem 2024; 63:2257-2267. [PMID: 38221778 DOI: 10.1021/acs.inorgchem.3c04229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Easy-to-synthesize aminoquinoline (AQ) appended naphthoquinone (NQ)-based colorimetric and ratiometric probe (AQNQ) was successfully synthesized in one step with high yield and low cost, and was utilized to supply an effective solution to critical shortcomings encountered in Cu2+ analysis. The structure of AQNQ and its interaction with Cu2+ forming an unusual AQNQ-Cu complex were enlightened with single-crystal X-ray diffraction analysis and different spectroscopic methods. AQNQ-Cu complex is the first Cu2+ containing dinuclear crystal where the octahedral coordination sphere is fulfilled through the coordination of a NQ oxygen atom. AQNQ exhibited long-term stability (more than 1 month), superior probe ability toward Cu2+ with quite fast response (30 s), high selectivity among many ions, and limit of detection of 12.13 ppb that is significantly below the highest amount of Cu2+ allowed in drinking water established by both WHO and EPA. Ratiometric determination of Cu2+ using AQNQ was performed with high recovery and low RSD values for drinking water, tap water, lake water, cherry, and watermelon samples. Colorimetric on-site determination including smartphone and paper strip applications, IMPLICATION, and INHIBIT logic gate applications were successfully carried out. The reversibility and reusability of the response to Cu2+ ions with the paper strip application were examined for the first time.
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Affiliation(s)
- Mehmet Kaplan
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
| | - Ozgur Yavuz
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
| | - Emre Ozdemir
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
| | - Yusuf Alcay
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
| | - Kerem Kaya
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
| | - Ismail Yilmaz
- Department of Chemistry, Istanbul Technical University, Istanbul 34469, Maslak, Turkey
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Demir I, Akan OY, Bilgir F, Yilmaz I, Bozkaya G, Bilgir O. Epiregulin: A new prognostic molecule in non-Hodgkin lymphoma. Ir J Med Sci 2024:10.1007/s11845-024-03609-5. [PMID: 38270775 DOI: 10.1007/s11845-024-03609-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 01/10/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Epiregulin is a molecule that plays a role in cell proliferation, tumor development, inflammation, and angiogenesis in malignant diseases. AIM Our study aims to reveal, for the first time, the predictive value of this molecule in non-Hodgkin lymphoma (NHL) and its association with disease stage, cell type, and extranodal involvement. METHODS The study is an observational case-control trial involving 60 newly diagnosed NHL patients and 60 healthy individuals (control group) between 18 and 75 years old. Demographic characteristics of all volunteers, stages of patients' illnesses and lymphoma cell types, hemogram, biochemistry tests, beta 2-microglobulin, C-reactive protein (CRP), and epiregulin levels were measured and statistically evaluated. RESULTS Epiregulin levels were significantly higher in NHL patients compared to the control group (P < 0.0001). Similarly, a significant increase in epiregulin levels was observed in advanced NHL patients. Furthermore, the most common NHL subgroup within the NHL group, diffuse Large B Cell Lymphoma (DLBCL), and the subgroup with extranodal involvement also had significantly higher levels of epiregulin. A positive correlation was found between the epiregulin molecule and CRP, beta 2-microglobulin, and lactate dehydrogenase (LDH) levels in NHL patients. CONCLUSION Our study suggests that serum epiregulin levels, discovered to increase in NHL patients for the first time, may be an independent predictive molecule in an advanced stage, extranodal involvement, and the DLBCL subtype of this disease. Epiregulin positively correlates with prognostic molecules such as beta 2-microglobulin, LDH, and CRP. Illuminating its potential role in NHL pathogenesis could make epiregulin a vital drug target for treatment.
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Affiliation(s)
- Ismail Demir
- Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, Health Sciences University, 35170, Karabaglar, Izmir, Turkey.
| | - Ozden Yildirim Akan
- Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, Health Sciences University, 35170, Karabaglar, Izmir, Turkey
| | - Ferda Bilgir
- Department of Allergy and Immunology, Ataturk Training and Research Hospital, Izmir Kâtip Celebi University, Izmir, Turkey
| | - Ismail Yilmaz
- Department of Pharmacology and Toxicology, Izmir Kâtip Celebi University Faculty of Medicine, Izmir, Turkey
| | - Giray Bozkaya
- Department of Biochemistry, Izmir Bozyaka Training and Research Hospital, Health Sciences University, Izmir, Turkey
| | - Oktay Bilgir
- Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, Health Sciences University, 35170, Karabaglar, Izmir, Turkey
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Orgen Calli A, Issin G, Yilmaz I, Ince D, Tural E, Guzelis I, Cecen RE, Olgun HN, Gokcay D, Ozer E. The association of miR-204 and mir-483 5p expression with clinicopathological features of Wilms tumor: Could this provide foresight? Jpn J Clin Oncol 2023; 53:1170-1176. [PMID: 37647636 DOI: 10.1093/jjco/hyad113] [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: 03/03/2023] [Accepted: 08/08/2023] [Indexed: 09/01/2023] Open
Abstract
BACKGROUND Wilms tumor is the most common cancer of the kidney that occurs during childhood, and histologically, it mimics renal embryogenesis. With the development and improvement of up-to-date treatment protocols, the survival rates of Wilms tumor have increased. However, metastases or local relapses are still observed in 15% of patients. The search for reliable biomarkers to identify at-risk patients is ongoing to predict the variability in treatment success. Currently, the evaluation of clinical, histopathological and genetic features are common diagnostic methods; however, epigenetic features can be examined with microRNA expression analyses and might allow us to comment on the behavior of the tumor and treatment response. METHODS In this study, we aimed to evaluate the relationship between microRNA-204 and microRNA-483-5p expression with clinicopathological data and the effect on Wilms tumor survival. For this purpose, the expression levels of RNU6B, microRNA-204 and microRNA-483-5p were evaluated in tumor and normal tissue by qreal time-polymerase chain reaction. We also investigated the relationship between microRNA expression levels with the clinicopathological and histological features of Wilms tumor. RESULTS AND CONCLUSION The results of our study indicate that the relative expression levels of microRNA-204 in Wilms tumor tissues were significantly lower than that in adjacent normal tissues. By contrast, tumor tissue had a higher microRNA-483-5p expression than the corresponding normal tissues. A statistically significant difference between microRNA-204 expression level with age and the presence of anaplasia was observed. The upregulation of microRNA-483-5p was found to have a significant correlation with patients after preoperative chemotherapy and complete tumor necrosis. Taken together, our data suggest that microRNA-204 could play a critical role as a tumor suppressor, whereas microRNA-483-5p acts as an oncogene in Wilms tumor progression. More importantly, microRNA-204 might be a novel predictive biomarker for anaplastic histology and could be useful for developing therapeutic interventions targeting this marker.
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Affiliation(s)
- Aylin Orgen Calli
- Department of Pathology, Ataturk Training and Research Hospital, Izmir Katip Celebi University, Izmir, Turkiye
| | - Gizem Issin
- Department of Pathology, Mengucek Gazi Training and Research Hospital, Erzincan Binali Yıldırım University, Erzincan, Turkiye
| | - Ismail Yilmaz
- Department of Pathology, Istanbul Sultan Abdulhamid Han Training and Research Hospital, Medical Sciences University, Istanbul, Turkiye
| | - Dilek Ince
- Department of Pediatric Oncology, Institute of Oncology, Izmir Dokuz Eylul University, Izmir, Turkiye
| | - Ersin Tural
- Department of Pediatrics, Istanbul Sultan Abdulhamid Han Training and Research Hospital, Medical Sciences University, Istanbul, Turkiye
| | - Ismail Guzelis
- Department of Pathology, Ataturk Training and Research Hospital, Izmir Katip Celebi University, Izmir, Turkiye
| | - Refik Emre Cecen
- Department of Pediatric Oncology, Institute of Oncology, Izmir Dokuz Eylul University, Izmir, Turkiye
| | - Hatice Nur Olgun
- Department of Pediatric Oncology, Institute of Oncology, Izmir Dokuz Eylul University, Izmir, Turkiye
| | - Deniz Gokcay
- Department of Pathology, Izmir Dokuz Eylul University, Izmir, Turkiye
| | - Erdener Ozer
- Department of Pathology, Izmir Dokuz Eylul University, Izmir, Turkiye
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Akarsu SA, Gungor IH, Acisu TC, Cakir A, Guler E, Koca RH, Yilmaz I, Sonmez M, Gur S, Turk G, Kaya SO, Yuce A. Determination of the cryoprotective effect of n-methylacetamide in rabbit semen. Cryo Letters 2023; 44:378-384. [PMID: 38311932] [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: 02/06/2024]
Abstract
BACKGROUND Amides are low molecular weight cryoprotectants. N-methylacetamide (MA) is one of the cryoprotectant agents in this group. OBJECTIVE To investigate the cryoprotective effect of MA in rabbit semen. MATERIALS AND METHODS For this purpose, six ejaculates from six New Zealand rabbits were collected and pooled using an artificial vagina. Pooled semen was divided into four equal parts and diluted with TCG+ egg yolk. CPA was added to form the following groups: Control with 6% DMSO; Group 1 with 1% MA; Group 2 with 2% MA; and Group 3 with 3% MA. After the addition of CPA, the semen eqilibration procedure was started. Sperm were then drawn into 0.25 mL straws, frozen by automatic semen freezing and stored in a liquid nitrogen container. Pipettes were thawed after 24 h and analyses were performed. RESULTS Total, progressive and rapid motility values of the Control group were higher than those of the MA groups (p<0.05). However, there was no statistical difference between the Control and Group 2 in terms of these parameters. While there was no statistical difference between the groups in terms of acrosome damage and mitochondrial membrane potential, the best results were observed in Control, Group 2, Group 1 and Group 3, respectively. When we compared all groups, no difference was found in terms of MDA, CAT and GSH-Px. There was a statistical difference between Group 3 and the Control in terms of GSH level (p<0.05). CONCLUSION DMSO appeared to be more useful for the cryopreservation of rabbit semen compared to MA. Doi.org/10.54680/fr23610110812.
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Affiliation(s)
- S A Akarsu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Ataturk University, Erzurum, Turkey
| | - I H Gungor
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - T C Acisu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - A Cakir
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - E Guler
- Department of Physiology, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - R H Koca
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bingol University, Bingol, Turkey.
| | - I Yilmaz
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - M Sonmez
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - S Gur
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - G Turk
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - S O Kaya
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
| | - A Yuce
- Department of Physiology, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey
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Issin G, Demir F, Guvendir Bakkaloglu I, Cagatay DV, Aktug Simsek H, Yilmaz I, Zemheri E. High Incidence of Appendiceal Neoplasms in the Elderly: A Critical Concern for Non-Surgical Treatment. Med Princ Pract 2023; 32:358-368. [PMID: 37778333 PMCID: PMC10727520 DOI: 10.1159/000534347] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 09/27/2023] [Indexed: 10/03/2023] Open
Abstract
OBJECTIVE Appendiceal neoplasms (ANs) are rare tumors that are often discovered incidentally during histopathological examinations. The increasing incidence of ANs is a critical issue in the non-operative management of acute appendicitis. This study aimed to document the temporal trends over a 12-year period by analyzing the clinical presentation, imaging findings, and histopathological features of ANs. SUBJECTS AND METHODS Health records of patients who underwent appendectomy from 2011 to 2022 were examined. Demographic and clinical data, laboratory results, imaging findings, and histopathological features were documented. The characteristics of both ANs and non-neoplastic cases were evaluated. RESULTS A total of 22,304 cases were identified, of which 330 (1.5%) were diagnosed with ANs. The odds ratio for ANs increased with age, with the highest odds ratio observed in patients aged 70 or older. Receiver Operating Characteristic analysis showed that age and appendiceal diameter were significant predictors of ANs. An optimal age cut-off point of 28.5 years was determined, yielding a sensitivity of 72% and a specificity of 64%. For appendiceal diameter, the optimal cut-off was found to be 9.5 mm, exhibiting a sensitivity of 77% and a specificity of 56%. CONCLUSION Although the incidence of ANs remains relatively low, a steady increase has been observed over the past decade. The increasing rate of ANs raises concerns regarding non-surgical management options. The results of this study highlight the importance of considering ANs as a potential diagnosis in older patients and in patients with an appendix diameter greater than 9.5 mm. These findings may have implications for treatment and management.
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Affiliation(s)
- Gizem Issin
- Department of Pathology, Erzincan Binali Yildirim University, Mengucek Gazi Training and Research Hospital, Erzincan, Turkey
| | - Fatih Demir
- Department of Pathology, Erzincan Binali Yildirim University, Mengucek Gazi Training and Research Hospital, Erzincan, Turkey
| | - Irem Guvendir Bakkaloglu
- Department of Pathology, Health Science University Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Diren Vuslat Cagatay
- Department of Pathology, Erzincan Binali Yildirim University, Mengucek Gazi Training and Research Hospital, Erzincan, Turkey
| | | | - Ismail Yilmaz
- Department of Pathology, University of Health Sciences, Sultan II. Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Ebru Zemheri
- Department of Pathology, Health Science University Umraniye Training and Research Hospital, Istanbul, Turkey
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Alcay Y, Ozdemir E, Yildirim MS, Ertugral U, Yavuz O, Aribuga H, Ozkilic Y, Şenyurt Tuzun N, Ozdabak Sert AB, Kok FN, Yilmaz I. A methionine biomolecule-modified chromenylium-cyanine fluorescent probe for the analysis of Hg2+ in the environment and living cells. Talanta 2023; 259:124471. [PMID: 37001401 DOI: 10.1016/j.talanta.2023.124471] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023]
Abstract
The objective of the study is, for the first time, to construct a new near infrared (NIR) fluorophore, spectrophotometric, colorimetric, ratiometric, and turn-on probe (CSME) based on chromenylium cyanine platform decorated with methionine biomolecule to provide an efficient solution for critical shortcoming to be encountered for analysis of hazardous Hg2+ in environment and living cell. The CSME structure and its interaction with Hg2+ ion were evaluated by NMR, FTIR, MS, UV-Vis and fluorescence methods as well as Density Functional Theory (DFT) calculations. The none fluorescence CSME having spirolactam ring only interacted with Hg2+ in aqueous solution including competing ions. This interaction caused the fluorescence CSME with opened spirolactam form which exhibited spectral and colorimetric changes in the NIR region. The probe based on UV-Vis and fluorescence techniques respond in 90 s, has wide linear ranges (for UV-Vis: 6.29 × 10-8 - 1.86 × 10-4 M; for fluorescence: 9.49 × 10-9 - 1.13 × 10-5 M), and has a lower Limit of Detection (LOD) value (for fluorescence: 4.93 × 10-9 M, 0.99 ng/mL) than the value predicted by the US Environmental Protection Agency (EPA) organization. Hg2+ analysis was performed in drinking and tap water with low Relative Standard Deviation (RSD) values and high recovery. Smartphone and living cell applications were successfully performed for colorimetric sensing Hg2+ in real samples and 3T3 cells, respectively.
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Ozdemir E, Alcay Y, Yavuz O, Yildirim MS, Aribuga H, Ertugral U, Kaya K, Yilmaz I. Colorimetric and near-infrared spectrophotometric monitoring of bisulfite using glyoxal modified chromenylium-cyanine chemosensor: Smartphone and paper strip applications for on-site food and beverages control. Talanta 2023; 261:124660. [PMID: 37207509 DOI: 10.1016/j.talanta.2023.124660] [Citation(s) in RCA: 1] [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: 03/17/2023] [Revised: 03/29/2023] [Accepted: 05/08/2023] [Indexed: 05/21/2023]
Abstract
Detection of bisulfite (HSO3-) in food and beverages has vital importance because the excessive amount leads to ill effects on the human body. Colorimetric and fluorometric chromenylium-cyanine-based chemosensor CyR was synthesized and applied for high selective and sensitive analysis of HSO3- in red wine, rose wine and, granulated sugar with high recovery ranges and very fast response time without any interference from other competitive species. The limits of detection (LOD) for the UV-Vis and fluorescence titrations were found as 11.5 μM and 3.77 μM, respectively. The on-site and very rapid methods based on paper strips and smartphone which depend on the color changes from yellow to green have been successfully developed to analyze HSO3- concentration (10-5-10-1 M for paper strip and 163-1205 μM for smartphone). CyR and the bisulfite-adduct formed in the nucleophilic addition reaction with HSO3- were verified by FT-IR, 1H NMR, and MALDI-TOF results as well as Single-Crystal X-Ray Crystallography for CyR.
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Affiliation(s)
- Emre Ozdemir
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | | | - Hulya Aribuga
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Utku Ertugral
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Kerem Kaya
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey.
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Cetin D, Yavuz O, Alcay Y, Semih Yildirim M, Kaplan M, Aribuga H, Ozdemir E, Ertugral U, Yilmaz I. Development of a new near-infrared, spectrophotometric, and colorimetric probe based on phthalocyanine containing mercaptoquinoline unit for discriminative and highly sensitive detection of Ag +, Cu 2+, and Hg 2+ ions. Spectrochim Acta A Mol Biomol Spectrosc 2023; 297:122725. [PMID: 37075687 DOI: 10.1016/j.saa.2023.122725] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/29/2023] [Accepted: 04/09/2023] [Indexed: 05/03/2023]
Abstract
A new near-infrared, spectrophotometric, and colorimetric probe based on a phthalocyanine-containing mercaptoquinoline unit (MQZnPc) has been constructed and utilized for discriminative and highly selective/sensitive detection of Ag+, Cu2+, and Hg2+ ions by using proper masking agents like EDTA, KI, and NaCl. The probe only responds to Ag+, Cu2+, and Hg2+ among the tested ions without any interference. The probe performs quite well (the limit of detection: 160 ppb, 148 ppb, and 276 ppb of Ag+, Cu2+, and Hg2+ions for UV-Vis, and 15 ppb, 37 ppb, and 467 ppb of Ag+, Cu2+, and Hg2+ ions for fluorescence, respectively), and has a fast response time (150 sec, 90 sec, and 90 sec of Ag+, Cu2+, and Hg2+ions for UV-Vis, and 300 sec, 240 sec, and 90 sec Ag+, Cu2+, and Hg2+ions for fluorescence, respectively). The probe also displays a colorimetric feature for UV-Vis and smartphone applications. Based on a single probe, Ag+, Cu2+, and Hg2+ ions which are the main toxic water contaminants could be recognized very quickly and colorimetrically with high recovery values in tap water samples. This study stands out with its unique properties compared to the related studies in the literature.
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Affiliation(s)
- Dila Cetin
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | | | - Mehmet Kaplan
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Hulya Aribuga
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Emre Ozdemir
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Utku Ertugral
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey.
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Aribuga H, Ertugral U, Alcay Y, Yavuz O, Yildirim MS, Ozdemir E, Kaya K, Sert ABO, Kok FN, Tuzun NŞ, Yilmaz I. A new Fe 3+-selective, sensitive, and dual-channel turn-on probe based on rhodamine carrying thiophenecarboxaldehyde: Smartphone application and imaging in living cells. Spectrochim Acta A Mol Biomol Spectrosc 2023; 287:122060. [PMID: 36395583 DOI: 10.1016/j.saa.2022.122060] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/21/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
A new dual-channel probe based on rhodamine B derivative (MSB) was successfully designed, synthesized, characterized by Nuclear Magnetic Resonance (NMR) Spectroscopy, Fourier Transform Infrared Spectrophotometer (FTIR), Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry (MALDI-TOF MS), X-ray Photoelectron Spectroscopy (XPS), and Single Crystal X-rayDiffraction, and the sensing abilities toward Fe3+ cation have been demonstrated and the probe was successfully utilized for fluorescence imaging of Fe3+ in living cells. The probe demonstrated quite fast, sensitive, and selective response to Fe3+ by causing an extreme enhancement in UV-vis and fluorescence spectroscopy techniques in the buffered aqueous media which makes MSB a dual-channel probe. While the color of MSB solution was initially light yellow, it turned pink in the presence of Fe3+, which provided highly selective naked-eye determination among several ions as alkaline, alkaline-earth, and transition metal ions. After that, the probe was easily applied to paper strips and real samples such as drinking waters and supplementary iron tablets for sensing Fe3+ in an aqueous solution. The detection limit (LOD) and the response time of the probe were determined as 4.85x10-9 M and 4 min, respectively, which are quite lower compared with other rhodamine based Fe3+ sensors in the literature. According to Job's plot, 1H NMR titration, MALDI-TOF MS, XPS, and DFT study techniques, the complexation ratio between MSB and Fe3+ was found as 1:1. Moreover, the spectral response was reversible with alternately addition of Fe3+ or Na2EDTA to the MSB solution. In addition, fluorescence imaging in NIH/3T3 mouse fibroblast cells and studies in real samples with a quite high recovery rate exhibited that the probe is qualified for detection of Fe3+ ion with multiple practical usages.
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Affiliation(s)
- Hulya Aribuga
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Utku Ertugral
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | | | - Emre Ozdemir
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Kerem Kaya
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ayse Buse Ozdabak Sert
- Istanbul Technical University, Molecular Biology-Genetics and Biotechnology Program, MOBGAM, 34469 Maslak, Istanbul, Turkey; Istanbul Technical University, Molecular Biology and Genetics Department, 34469 Maslak, Istanbul, Turkey
| | - Fatma Nese Kok
- Istanbul Technical University, Molecular Biology-Genetics and Biotechnology Program, MOBGAM, 34469 Maslak, Istanbul, Turkey; Istanbul Technical University, Molecular Biology and Genetics Department, 34469 Maslak, Istanbul, Turkey
| | - Nurcan Şenyurt Tuzun
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey.
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Yavuz O, Sezen M, Alcay Y, Semih Yildirim M, Aribuga H, Ozdemir E, Ertugral U, Ozkilic Y, Şenyurt Tuzun N, Yilmaz I. A new highly Selective, sensitive and NIR spectrophotometric probe based on A 2B 2-Type of unsymmetrical phthalocyanine for hazardous Be 2+ recognition. Spectrochim Acta A Mol Biomol Spectrosc 2023; 284:121484. [PMID: 35729029 DOI: 10.1016/j.saa.2022.121484] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/02/2022] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
The aim of this work is to construct a new A2B2-type of unsymmetrical and ratiometric phthalocyanine (Pc) based-probe O-A2B2ZnPc to provide an effective solution to critical inadequacy to be experienced for the detection of hazardous Be2+. O-A2B2ZnPc enabling strong absorption and emission in Near-Infrared region (λabs-λem wavelengths of 694-712 nm) showed excellent selectivity and sensitivity toward Be2+ among competitive metal ions by both spectrophotometric and fluorometric methods. The probe with oligomeric Pc form in THF was degraded with the addition of aqueous Be2+ and arranged to J-aggregation form, resulting in a remarkably diminishing in Q-band at 694 nm as well as a new band formation at 746 nm, and a considerably decreasing in fluorescence emission. The probe has superior features for the determination of Be2+ such as high quantum efficiency and photochemical stability, rapid response (1 s), high selectivity and very low Limit of Detection (0.26 ppb and 1.5 ppb) for UV-Vis and fluorescence, respectively which are quite good values according to the permissible amount of Be2+ (4 ppb) in water as specified by World Health Organization. O-A2B2ZnPc can be shown among the best performing probes with its unique properties according to previous studies in the literature. In addition, the geometrical and spectral features of the O-A2B2ZnPc were analyzed in detail by DFT calculations.
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Affiliation(s)
- Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Mustafa Sezen
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | | | - Hulya Aribuga
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Emre Ozdemir
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Utku Ertugral
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Yilmaz Ozkilic
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Nurcan Şenyurt Tuzun
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey.
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Tosun I, Karabulut MH, Yilmaz I, Cırık AA, Sahin O. Biphenotypic sinonasal sarcoma with PAX3/FOXO1 fusion. POL J PATHOL 2023; 74:282-285. [PMID: 38477090 DOI: 10.5114/pjp.2023.134321] [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] [Indexed: 03/14/2024] Open
Abstract
Biphenotypic sinonasal sarcoma (BSNS), previously known as low-grade sinonasal sarcoma, is a rare tumour of the sinonasal tract, first described in 2012. It involves both myogenic and neural differentiation and is characterized by PAX3 rearrangement. MAML3 is the most frequent fusion partner of PAX3; however, its partner remains unidentified in a subset of cases. These tumours have significant local recurrence rates but lack metastatic potential. Here, we report a case of BSNS with PAX3/FOXO1 fusion and discuss its clinicopathological features and differential diagnosis.
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Affiliation(s)
- Ilkay Tosun
- Department of Pathology, University of Health Sciences, Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Murat H Karabulut
- Department of Pathology, University of Health Sciences, Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Ismail Yilmaz
- Department of Pathology, University of Health Sciences, Sultan 2. Abdul Hamid Khan Educational and Research Hospital, Istanbul, Turkey
| | - Ahmet A Cırık
- Department of Otolaryngology, University of Healt Sciences, Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Onur Sahin
- Department of Pathology, University of Health Sciences, Umraniye Training and Research Hospital, Istanbul, Turkey
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Issın G, sayar İ, Demir F, Guvendir Bakkaloglu I, Gamsızkan M, Yildiz Z, Yilmaz I, Akalp Ozmen S, Cagatay DV, Zemheri E, Demiriz M, Gunal A. Clinicopathologic features and prognostic significance of immunohistochemistry and in Situ Hybridization based molecular classification in gastric carcinoma. J Environ Pathol Toxicol Oncol 2023. [PMID: 37522564 DOI: 10.1615/jenvironpatholtoxicoloncol.2023047662] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND/AIM Gastric carcinoma (GC) is a highly heterogeneous disease with many subtypes that have different morphologic and molecular characteristics. In the current study, we analyzed immunohistochemical (IHC) and in situ hybridization (ISH) features of GCs and evaluated their association with prognosis and clinicopathological features. MATERIALS AND METHODS Three hundred cases analyzed by IHC and ISH for microsatellite stability, p53, e-cadherin, HER2, PD-L1 expression, and Epstein-Barr virus (EBV) status. Cases were classified into five subgroups based on expression profile. The relationships between subgroups, clinicopathological features, and survival were determined. RESULTS Ten (3.3%) cases were classified as EBV-associated, 45 (15%) as microsatellite instable (MSI), 73 (24.3%) as EBV-/microsatellite-stable (MSS)/epithelial-mesenchymal-transformation (EMT)-like, 75 (25%) as EBV-/MSS/ non-EMT-like/p53+, and 97 (32.3%) as EBV-/MSS/non-EMT-like/p53-. The MSI subtype had the best overall survival (OS). In contrast, the EBV-/MSS/EMT-like subtype had the poorest OS. The MSI subtype was also related with old age of the patient and antrum-corpus localized tumors, whereas the EBV-/MSS/EMT-like was associated with young age, larger tumor size, and advanced stage presentation. PD-L1 positivity is highly correlated with MSI and EBV-associated subtypes. CONCLUSION Our data demonstrated a link between IHC/ISH characteristics of GC and clinical outcomes. IHC/ISH based molecular classification may be helpful in predicting the survival.
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Onder S, Mete O, Yilmaz I, Bayram A, Bagbudar S, Altay AY, Issin G, Terzi NK, Iscan Y, Sormaz IC, Tunca F, Senyurek YG, Yegen G. DICER1 Mutations Occur in More Than One-Third of Follicular-Patterned Pediatric Papillary Thyroid Carcinomas and Correlate with a Low-Risk Disease and Female Gender Predilection. Endocr Pathol 2022; 33:437-445. [PMID: 36251117 DOI: 10.1007/s12022-022-09736-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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] [Accepted: 10/08/2022] [Indexed: 11/03/2022]
Abstract
Some pediatric papillary thyroid carcinoma (PPTC) cohorts have suggested a preliminary correlation with respect to DICER1 mutation status and histomorphology in both benign and malignant follicular cell-derived nodules; however, the data regarding correlates of DICER1-related sporadic PPTCs subtyped based on the 2022 WHO classification criteria are largely unavailable. The current study investigated the status of hotspot DICER1 mutations with clinical, histological and outcome features in a series of 56 patients with PPTCs with no clinical or family history of DICER1-related syndromic manifestation. Fifteen (27%) PPTCs harbored BRAF p.V600E. Eight (14%) cases of PPTCs harbored DICER1 mutations with no associated BRAF p.V600E. DICER1 mutations were identified in exons 26 and 27. A novel D1810del (c.5428_5430delGAT) mutation was also detected. We also confirmed the absence of hotspot DICER1 mutations in the matched non-tumor tissue DNA in all 8 DICER1-related PPTCs. The mean age of DICER1-harboring PPTCs was 15.1 (range: 9-18) years whereas the rest of this cohort had a mean age of 14.8 (range 6-18) years. With the exception of one PPTC, all DICER1-related PPTCs were seen in females (female-to-male ratio: 7). The female to male ratio was 3.8 in 48 DICER1-wild type PPTCs. In terms of histological correlates, 5 of 8 (63%) DICER1-mutant PPTCs were invasive encapsulated follicular variant papillary thyroid carcinomas (FVPTCs) including 4 minimally invasive FVPTCs and 1 encapsulated angioinvasive FVPTC, whereas the remaining 3 PPTCs were infiltrative classic papillary thyroid carcinomas (p < 0.05). The incidence of DICER1 mutations was 19.5% in BRAF p.V600E-wild type PPTCs. Sixty-three percent of DICER1 hotspot mutations occurred in invasive encapsulated FVPTCs, and this figure represents 38% of invasive encapsulated FVPTCs. Only one (12%) patient with DICER1-related disease showed a single lymph node with micro-metastasis. Unlike DICER1-wild type patients, no distant metastasis is identified in patients with DICER1-related PPTCs. The current series expands on the surgical epidemiology of somatic DICER1-related PPTCs by correlating the mutation status with the clinicopathological variables. Our findings underscore that female gender predilection and enrichment in low-risk follicular-patterned PTCs are characteristics of DICER1-related PPTCs.
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Affiliation(s)
- Semen Onder
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Millet Caddesi, Capa, 34134, Istanbul, Turkey.
| | - Ozgur Mete
- Department of Pathology, University Health Network, Toronto General Hospital, 200 Elizabeth Street, 11th floor, Toronto, ON, M5G 2C4, Canada
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Endocrine Oncology Site, Princess Margaret Cancer Centre, Toronto, ON, Canada
| | - Ismail Yilmaz
- Department of Pathology, Sultan Abdulhamid Han Training & Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Aysel Bayram
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Millet Caddesi, Capa, 34134, Istanbul, Turkey
| | - Sidar Bagbudar
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Millet Caddesi, Capa, 34134, Istanbul, Turkey
| | - Ali Yılmaz Altay
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Millet Caddesi, Capa, 34134, Istanbul, Turkey
| | - Gizem Issin
- Department of Pathology, Sultan Abdulhamid Han Training & Research Hospital, University of Health Sciences, Istanbul, Turkey
- Department of Pathology, Mengucek Gazi Education & Research Hospital, Erzincan University, Erzincan, Turkey
| | - Neslihan Kaya Terzi
- Department of Pathology, Sultan Abdulhamid Han Training & Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Yalın Iscan
- Department of General Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Ismail Cem Sormaz
- Department of General Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Fatih Tunca
- Department of General Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Yasemin Giles Senyurek
- Department of General Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Gulcin Yegen
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Millet Caddesi, Capa, 34134, Istanbul, Turkey
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Inan S, Gultekin G, Yilmaz I, Buyuklu AF. Effect of Functional Septorhinoplasty with Concha Bullosa Resection on Sinonasal Symptoms. Laryngoscope 2022; 133:1375-1381. [PMID: 36196949 DOI: 10.1002/lary.30428] [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: 08/01/2022] [Revised: 09/02/2022] [Accepted: 09/21/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate the impact of functional septorhinoplasty (SRP) with and without concha bullosa resection (CBR) on sinonasal symptoms and nasal obstruction severity using the Nasal Obstruction Symptom Evaluation (NOSE) and Sino-Nasal Outcome Test-22 (SNOT-22) scale. METHODS Consecutive adult participants who underwent SRP were retrospectively analyzed. Patients were divided into two groups: Group 1 (SRPwCB) underwent SRP with CBR (bulbous or extensive type MTs), and Group 2 (SRPO) underwent SRP only (normal or lamellar-type MTs). The NOSE and SNOT-22 scales were assessed preoperatively and at the 3-month follow-up evaluation. Patient demographics, self-reported outcomes, nasoseptal angle (NSA), and Lund-Mackay scores (LMS) were analyzed. RESULTS There were 119 participants (SRPwCB n = 57; SPRO n = 62). There were no statistically significant differences in age, sex, allergy, smoking, LMS, and NSA according to the presence of MTCB. Compared to SRPO, SRPwCB patients had significantly higher preoperative NOSE and SNOT-22 scores, whereas their postoperative NOSE and SNOT-22 scores were similar. SRPwCB patients also had significantly more postnasal discharge, ear fullness, facial pain/pressure, poor sleep, night waking, daytime fatigue, sense of taste/smell, and blockage symptoms before surgery compared with SRPO patients. CONCLUSION SRPwCB patients had higher nasal obstruction and sinonasal symptom scores and greater improvement after surgery than SRPO patients. Therefore, evaluating the middle turbinate before functional SRP may be an important for surgical treatment of sinonasal symptoms. LEVEL OF EVIDENCE 3 Laryngoscope, 2022.
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Affiliation(s)
- Serhat Inan
- Department of Otorhinolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey
| | - Goknil Gultekin
- Department of Otorhinolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey
| | - Ismail Yilmaz
- Department of Otorhinolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey
| | - Adnan Fuat Buyuklu
- Department of Otorhinolaryngology, Başkent University Faculty of Medicine, Ankara, Turkey
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Yilmaz I, Akalan H, Karaarslan N, Yasar Sirin D, Kaplan N, Dogan M, Ozbek H, Ates O. Can transcription factors in the intervertebral disc of lopinavir/ritonavir prevent degeneration in the nucleus pulposus by mediating the regulation of inflammation through signaling pathways? Eur Rev Med Pharmacol Sci 2022; 26:6845-6855. [PMID: 36196733 DOI: 10.26355/eurrev_202209_29788] [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: 06/16/2023]
Abstract
OBJECTIVE This study was conducted to examine whether lopinavir/ritonavir (Lop/r), an HIV protease inhibitor, can improve disc physiology and slow down intervertebral disc (IVD) degeneration through in vitro experimental methods, as well as whether it can suppress inflammation with interleukin-1 beta (IL-1β) and sex-determining region Y (SRY) protein-related high-mobility group box genes-9 (SOX9) through hypoxia-inducible factor 1-alpha (HIF-1α) and the nuclear factor kappa B (NF-κB) signaling pathway. The aim was to investigate whether Lop/r application is toxic to IVD cells and the microenvironment simultaneously. PATIENTS AND METHODS Human primary cell cultures were prepared using herniated IVD tissues obtained from patients with lumbar disc hernia who were unresponsive to conservative and medical treatment, and thereby, were operated on. The untreated culture samples served as control group, and the samples treated with Lop/r served as study group. Microscopic evaluations were performed simultaneously using fluorescent and supravital dyes in all groups. In addition to cell viability, toxicity, and proliferation analysis through a commercial kit, IL-1β, SOX9, HIF-1α, and NF-κB protein expressions were evaluated using Western blotting. In the statistical comparison of the obtained data, an alpha value less than 0.05 was considered significant. RESULTS Cell proliferation decreased in the Lop/r group, but no cell death was observed (p < 0.05). Moreover, at the end of 72 hours after Lop/r application, IL-1β and NF-kB protein expressions decreased by 40% and 52%, respectively, while HIF-1α and SOX9 protein expressions increased by 4% and 59%, respectively (p< 0.05). CONCLUSIONS Although these data were obtained from an in vitro experimental study, it is believed that these findings could make significant contributions to the pharmaco-regenerative treatment modalities of IVD degeneration. Lop/r suppresses the IL-1β and NF-κB and induces SOX9 and HIF-1α, since these signaling pathways may be related to human IVD degeneration.
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Affiliation(s)
- I Yilmaz
- Unit of Pharmacovigilance and Rational Use of Drugs, Republic of Turkey, Ministry of Health, Dr. Ismail Fehmi Cumalıoglu City Hospital, Tekirdag, Turkey.
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Yilmaz I, Akalan H, Oznam K, Karaarslan N, Yasar Sirin D, Ozbek H. Does oseltamivir protect human chondrocyte and nucleus pulposus cells from degeneration by inhibiting senescence and proinflammation mediated by the NLRP3 inflammasome and NF-κB? Eur Rev Med Pharmacol Sci 2022; 26:4816-4827. [PMID: 35856374 DOI: 10.26355/eurrev_202207_29207] [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: 06/15/2023]
Abstract
OBJECTIVE Recent drug design studies suggest that inflammation is among the most important factors in the development of both intervertebral disc (IVD) degeneration (IVDD) and osteoarthritis (OA) due to cartilage damage. This study aimed to investigate whether the anti-inflammatory drug oseltamivir has a toxic effect on IVD and cartilage tissue cells. It assessed what effect oseltamivir has on hypoxia-inducible factor (HIF)-1 alpha (HIF1α), which plays an important role in anabolic pathways in IVD and cartilage tissue. In addition, the study analyzed whether oseltamivir could inhibit the release of inflammatory interleukin-1 beta (IL-1β) via the nuclear factor kappa-B (NF-κB) signaling pathway by activating the nucleotide-binding oligomerization domain and leucine-rich repeat protein-3 (NLRP3) inflammasome. MATERIALS AND METHODS Human lumbar IVD (n = 8) tissues were isolated for annulus fibrosus (AF) and nucleus pulposus (NP) primary cell cultures, and human tibial and femoral cartilage tissues (n = 8) were isolated for primary chondrocyte cultures. Untreated groups served as the control and oseltamivir-treated groups as the study sample. Cell viability and cytotoxicity were evaluated at 0, 24, 48, and 72 h in all groups for changes in HIF-1α, IL-1β, NF-κB, and the NLRP3-inflammasome protein expressions using Western blotting. The α significance value was < 0.05. RESULTS In the oseltamivir-treated groups, cell proliferation decreased in both AF/NP cell and chondrocyte cultures obtained from IVD cartilage tissues. After Western blotting analysis, changes were observed in the protein expressions of HIF-1α, IL-1β, NF-κB, and the NLRP3 inflammasome in both AF/NP cells and chondrocytes. The results were statistically significant (p < 0.05). CONCLUSIONS Oseltamivir treatment may be a promising regenerative strategy to manage IVDD and osteoarthritic cartilage tissues.
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Affiliation(s)
- I Yilmaz
- Department of Pharmacovigilance, Republic of Turkey, Ministry of Health, Doctor Ismail Fehmi Cumalioglu City Hospital, Tekirdag, Turkey.
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Kiran G, Yilmaz I, Aydin S, Sanlikan F, Ozkaya E. The shortest distance between the skin and the peritoneal cavity is obtained with fascial elevation: a preliminary prospective laparoscopic entry study. Facts Views Vis Obgyn 2022; 14:171-175. [DOI: 10.52054/fvvo.14.2.028] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The purpose of this study was to prospectively compare the measurement of skin-to-fascia distances in the neutral state, during manual elevation and by fascial elevation in patients who underwent laparoscopic surgery. In 53 patients, the distance between the skin and anterior wall of the rectus sheath was measured prospectively in following three different ways: (1) in neutral position, (2) during manual elevation and (3) during elevation of the fascia using forceps following an infraumbilical vertical skin incision. In all patients, subcutaneous tissue up to the fascia was dissected after a vertical skin incision. The skin-to-fascia distance of 30.9 mm (14.0-52.0 mm) in the neutral position decreased to 11.1 mm (0.0-26.0 mm) during the fascial elevation, while the mean distance increased to 40.1 mm (19-70 mm) during manual elevation (p < 0.001). In the closed laparoscopic entry technique in which a Veress needle is inserted into the peritoneum through a small incision, the needle should be introduced from the shortest distance between the skin and the peritoneum. Lifting the fascia with a proper surgical instrument in suitable patients could enable us to achieve this goal.
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Yilmaz I, Akalan H, Yasar Sirin D, Karaarslan N, Kaplan N, Ozbek H. Effects of an acetylcholinesterase inhibitor and an N-methyl-D-aspartate receptor antagonist on inflammation and degeneration of the nucleus pulposus. Eur Rev Med Pharmacol Sci 2022; 26:4409-4419. [PMID: 35776042 DOI: 10.26355/eurrev_202206_29080] [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: 06/15/2023]
Abstract
OBJECTIVE The study aimed to examine the effects of two drugs, an acetylcholinesterase inhibitor (AChEI) and an N-methyl-D-aspartate receptor (NMDAR) antagonist, on degenerated annulus fibrosus (AF) and nucleus pulposus (NP) cells and the extracellular matrix (ECM) structure in vitro. PATIENTS AND METHODS Tissue samples were obtained from patients with intervertebral disc herniation (four males and four females; classified as Pfirmann stage IV) and used to prepare cell cultures. Untreated cell culture samples served as the control group. Study group samples were treated with donepezil, memantine or a combination of the two drugs. Cell viability, toxicity and proliferation were evaluated in all groups. Western blotting was used to examine changes in protein expression of signal transducer and activator of transcription 3 (STAT3), phospho-STAT3 (ser727), hypoxia-inducible factor (HIF)-1 alpha (HIF-1α) and nucleotide-binding oligomerisation domain (NOD) leucine-rich repeat (LRR)-containing proteins (NLR) family pyrin domain containing 3 (NLRP3) inflammasome. The alpha significance value was < 0.05. RESULTS Analysis of the microscopy and commercial kit results revealed that cell proliferation was suppressed, and no cell death was observed. The protein expression levels of NLRP3, STAT3, ser727 and HIF-1α were lower in the samples treated with donepezil and memantine at 72 h (p < 0.05). The protein expression levels of NLRP3, STAT3, ser727 and HIF-1α were higher in the samples treated with the combination of donepezil and memantine (p < 0.05). CONCLUSIONS The combined administration of memantine a NMDAR antagonist which can prevent neurodegeneration and donepezil an AChEI used for pain relief increased the protein expression levels in the anabolic pathway. However, it did not reduce the protein expression levels in the catabolic pathway. Therefore, further studies are needed to provide extensive insight into whether it may be among the potential targets for the therapy of intervertebral disc (IVD) diseases.
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Affiliation(s)
- I Yilmaz
- Republic of Turkey, Ministry of Health, Dr. Ismail Fehmi Cumalioglu City Hospital, Unit of Pharmacovigilance and Rational Use of Drugs, Tekirdag, Turkey.
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Emirzeoglu L, Olmez O, Mustafayev F, Berber U, Yilmaz I, Celik S, Oven B, Ozgun M. Prognostic value of expression levels of miR‑148a, miR‑152 and HLA‑G in colon cancer. Oncol Lett 2022; 24:226. [PMID: 35720471 PMCID: PMC9185158 DOI: 10.3892/ol.2022.13347] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 04/26/2022] [Indexed: 11/05/2022] Open
Affiliation(s)
- Levent Emirzeoglu
- Department of Medical Oncology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
| | - Ozgur Olmez
- Department of Medical Oncology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
| | - Fatma Mustafayev
- Department of Medical Oncology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
| | - Ufuk Berber
- Department of Pathology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
| | - Ismail Yilmaz
- Department of Pathology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
| | - Serkan Celik
- Department of Medical Oncology, Yeditepe University Koşuyolu Hospital, 34718 Istanbul, Turkey
| | - Bala Oven
- Department of Medical Oncology, Yeditepe University Koşuyolu Hospital, 34718 Istanbul, Turkey
| | - Mehmet Ozgun
- Department of Medical Oncology, University of Health Sciences, Sultan II. Abdulhamid Khan Educational and Research Hospital, 34660 Istanbul, Turkey
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Yilmaz I, Karaarslan N. Examining the effects of HMG-CoA reductase inhibitors on anabolic and catabolic signaling pathway proteins associated with degenerative disc disease. Eur Rev Med Pharmacol Sci 2022; 26:2990-3000. [PMID: 35503599 DOI: 10.26355/eurrev_202204_28630] [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: 06/14/2023]
Abstract
OBJECTIVE Recent evidence suggests that statins, among lipid-lowering drugs, can be used to lower serum cholesterol levels for reducing the risk of cardiovascular disease in individuals with high cholesterol, as well as reducing DNA damage and having anti-ageing and pleiotropic effects. Additionally, nuclear factor kappa B (NF-κB) is reported to be suppressed in statin-administered nucleus pulposus (NP) cells for the prevention of interleukin (IL) -1 beta (IL-1β)-induced apoptosis and extracellular matrix (ECM) degradation. The purpose of this study is the examine whether it is possible for pharmacological synthetic statin agents added into primary cell cultures obtained from human intervertebral disc tissue (IVD) to stop and eliminate tissue degeneration through the anabolic/catabolic signaling pathways associated with inflammation. MATERIALS AND METHODS Pitavastatin and rosuvastatin were added to monolayer grown human primary annulus fibrosus (AF)/NP cells. Cytotoxicity and proliferation analyses were carried out. AF/NP cells and ECM structure were also examined microscopically. In addition, changes in transcription factors and protein expressions of proinflammatory cytokines, which play important roles in anabolic and catabolic pathways associated with inflammation, were analyzed. RESULTS Decreased proliferation and cell necrosis were observed at the end of 72 hours in the samples, in which statins were added, compared to the samples in the control group to which no pharmacological agent was administered. In addition to this, changes were observed in the expressions of proteins. All results were statistically significant (p<0.05). CONCLUSIONS To better understand the regenerative effects of these two pharmacological agents on degenerated AF/NP cells, there is an urgent need for prospective studies in which different signaling pathways and receptors on these pathways are investigated, apart from IL-1β; NF-κB signaling pathway and SOX9.
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Affiliation(s)
- I Yilmaz
- Unit of Pharmacovigilance, and Rational Use of Drugs, Republic of Turkey, Ministry of Health, Dr. Ismail Fehmi Cumalioglu Hospital, Tekirdag, Turkey.
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Bayram R, Yilmaz I, Yaykasli KO, Kaya E. Erdosteine reduces alpha- and beta-amanitin-induced cytotoxicity, not gamma-amanitin, in CA3 hepatocyte cultures. Toxicon 2022; 213:52-58. [DOI: 10.1016/j.toxicon.2022.04.009] [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] [Received: 02/22/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/30/2022]
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Acimis NM, Yilmaz I, Tekindal MA, Kilic R. Rational use of drugs in healthcare services: a sample of tertiary hospital. Eur Rev Med Pharmacol Sci 2022; 26:1701-1707. [PMID: 35302219 DOI: 10.26355/eurrev_202203_28239] [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: 06/14/2023]
Abstract
OBJECTIVE This study aimed at evaluating physicians' attitudes towards the rational use of drugs (RUD) at a training and research hospital. SUBJECTS AND METHODS This cross-sectional study was conducted in a training and research hospital affiliated with the Ministry of Health between December 2014 and April 2015. All 424 active-duty physicians were asked to participate in the survey study. Of these physicians, 193 (45.5%) volunteered to respond to a 64-item survey. A total of 193 (45.5%) physicians volunteered to participate in the study. The chi-squared test, ANOVA, and multiple logistic regression analysis were used for the evaluation of the study data. RESULTS Of the physicians who participated in the study, 58.0% were male. Prescriptions were dispensed for 52.73% (± 27.44) of the patients, with a mean of 2.67±0.98 items per prescription. The rational use of drugs was defined as prescribing an effective drug for the patient (85.4%), prescribing an appropriate drug for the patient (84.9%), and prescribing a safe drug for the patient (77.2%). Compared to residents, the prescription preferences of specialists were affected 2-fold by follow-up visit (p=0.010, β 0.694, CI 1.180 3.396), 1-fold by patient examination percentage (p=0.002, β 0.022, CI 1.008 1.037), and 3.5-fold by prescribing iron supplements (p=0.001, β 1.274, CI 1.644 7.774) (R2 0.259, p=0.001). CONCLUSIONS The results of the study showed that tertiary hospital specialists and residents have similar attitudes towards patients, their prescribing preferences and RUD knowledge level. This study provides comprehensive information on physicians' attitudes towards RUD.
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Affiliation(s)
- N M Acimis
- Pamukkale University School of Medicine, Denizli, Turkey.
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Yilmaz I, Inan S, Vural O, Akdogan V, Hizal E, Ozer F, Yavuz H, Naci Ozluoglu L. Evaluation of the Relationship Between Facial Nerve and Lateral Semicircular Canal in the Posterior Tympanotomy Approach. J Int Adv Otol 2022; 18:57-61. [PMID: 35193847 PMCID: PMC9450025 DOI: 10.5152/iao.2022.21167] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background: To clinically and radiologically evaluate the relationship between the facial nerve and the lateral semicircular canal during posterior tympanotomy. Methods: Patients who received cochlear implants between 2010 and 2020 were included in the study. The relationship between the facial nerve and the lateral semicircular canal was classified into 3 types by evaluating the axial section computed tomography images. If the facial nerve passed medially without contacting the lateral semicircular canal dome, it was classified as type 1; if the facial nerve passed by contacting the medial border of the lateral semicircular canal dome, it was classified as type 2; and if the facial nerve contacted the lateral border of the lateral semicircular canal dome or passed more laterally, it was classified as type 3. Results: In total, 309 ears of 257 patients [139 males (54.1%) and 118 females (45.9%)] were included in the study. Ninety-three (30.1%) of the ears were classified as type 1, 179 (57.9%) were type 2, and 37 (12%) were type 3. It was found that the combined posterior tympanotomy/endomeatal approach was used in 6 ears (1.9%), of which 4 were type 3, and 2 were type 2 (P = .006). Conclusion: Systematic evaluation of the relationship between facial nerve and lateral semicircular canal in computed tomography axial sections might help prevent facial nerve damage that can occur during posterior tympanotomy. It was concluded that type 3 ears should be evaluated in this respect, as a combined posterior tympanotomy/endomeatal approach may be required.
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Affiliation(s)
- Ismail Yilmaz
- Department of Otolaryngology, Head and Neck Surgery, Başkent University Faculty of Medicine, Adana Dr. Turgut Noyan Application and Research Center, Adana, Turkey
| | - Serhat Inan
- Department of Otolaryngology, Head and Neck Surgery, Başkent University Faculty of Medicine, Adana Dr. Turgut Noyan Application and Research Center, Adana, Turkey
| | - Omer Vural
- Department of Otolaryngology, Head and Neck Surgery,Başkent University Faculty of Medicine, Ankara, Turkey
- Corresponding author: Omer Vural, e-mail:
| | - Volkan Akdogan
- Department of Otolaryngology, Head and Neck Surgery, Başkent University Faculty of Medicine, Konya Application and Research Center, Konya, Turkey
| | - Evren Hizal
- Department of Otolaryngology, Head and Neck Surgery,Başkent University Faculty of Medicine, Ankara, Turkey
| | - Fulya Ozer
- Department of Otolaryngology, Head and Neck Surgery, Başkent University Faculty of Medicine, Adana Dr. Turgut Noyan Application and Research Center, Adana, Turkey
| | - Haluk Yavuz
- Department of Otolaryngology, Head and Neck Surgery, Başkent University Faculty of Medicine, Adana Dr. Turgut Noyan Application and Research Center, Adana, Turkey
| | - Levent Naci Ozluoglu
- Department of Otolaryngology, Head and Neck Surgery,Başkent University Faculty of Medicine, Ankara, Turkey
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Katirci Y, Yilmaz I, Kaya E. Effects of thymoquinone on alpha-amanitin induced hepatotoxicity in human C3A hepatocytes. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e191072] [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: 11/22/2022] Open
Affiliation(s)
| | - Ismail Yilmaz
- Izmir Kâtip Celebi University School of Medicine, Turkey
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Terzi NK, Yilmaz I, Oz AB. The Place and Prognostic Value of TERT Promoter Mutation in Molecular Classification in Grade II-III Glial Tumors and Primary Glioblastomas. Turk Patoloji Derg 2021; 38:90-98. [PMID: 34558656 PMCID: PMC9999695 DOI: 10.5146/tjpath.2021.01555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Diffuse gliomas, the most common primary malignant brain tumors, have been classified by the World Health Organization as class II-IV gliomas. After 2016, two mutations in the promoter region of the telomerase reverse transcriptase (TERT) gene were identified in addition to the IDH, 1p / 19q, and ATRX status. MATERIAL AND METHOD We identified 84 patients with grade II-IV glioma with IDH, ATRX, 1p / 19q and TERT status. All tumor samples were subjected to molecular genetic screening (Sanger sequencing for IDH and TERT mutations, fluorescence in situ hybridization for 1p/19q status) after histological diagnosis (immunohistochemistry for IDH1 R132H, ATRX, and p53) for a more precise molecular diagnosis. The confidence intervals were calculated at the 95% confidence level, and differences at p < 0.05 were considered statistically significant. RESULTS Primary glioblastomas had the highest frequency of TERT promoter mutations (25 of 28, 89.2%, p=0.006) followed by oligodendrogliomas (29 of 35, 82.8%, p < 0.001) while astrocytomas showed the lowest frequency (3 of 15, 20%, p=0.107), and the positivity significantly differed among these three groups (p < 0.001). TERT promoter mutations were more frequent in patients older than 55 years of age at diagnosis (p=0.023). The group with TERT promoter mutations, and without IDH mutations showed the worst overall survival. However, the presence of both TERT promoter and IDH mutations, which resembled oligodendroglial progression, showed best overall survival (p=0.042). CONCLUSION The discovery of TERT promoter mutations in numerous gliomas has opened the door for a better molecular classification of gliomas, and TERT status is associated with survival. Further studies will help in elucidating the value of TERT promoter mutations as biomarkers in clinical practice, and eventual therapeutic targets.
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Affiliation(s)
- Neslihan Kaya Terzi
- Department of Pathology, University of Health Sciences Gaziosmanpasa Research and Training Hospital, ISTANBUL, TURKEY
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Abstract
BACKGROUND AND OBJECTIVES In cochlear implant (CI) surgery, the results and causes of revision and reimplantation may guide surgeons in establishing surgical protocols for revision surgery with safe audiological outcomes. The aim of this study was to review our experience in terms of etiology, surgical strategy, and hearing outcomes in pediatric patients who underwent CI removal and reimplantation. SUBJECTS AND PURPOSE All patients received implants of the same brand. Pre and postoperative Categories of Auditory Performance score and aided free-field pure tone audiometry thresholds were noted. In vivo integrity tests were performed for each patient and the results of ex vivo tests of each implant were obtained from manufacturer. RESULTS A total of 149 CIs were placed in 121 patients aged <18 years. The revision rate in children was 6.7% (10/121 children). Six patients had a history of head injury leading to a hard failure. The causes of reimplantation in others were soft failure (n=1), electrode migration (n=1), infection (n=1), and other (n=1). All patients showed better or similar postreimplantation audiological performance compared with pre-reimplantation results. CONCLUSIONS It is very important to provide a safe school and home environment and educate the family for reducing reimplantation due to trauma. Especially for active children, psychiatric consultation should be continued postoperatively.
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Affiliation(s)
- Fulya Ozer
- Department of Otorhinolaryngology, Head and Neck Surgery, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Haluk Yavuz
- Department of Otorhinolaryngology, Head and Neck Surgery, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Ismail Yilmaz
- Department of Otorhinolaryngology, Head and Neck Surgery, Baskent University Faculty of Medicine, Ankara, Turkey
| | - Levent N Ozluoglu
- Department of Otorhinolaryngology, Head and Neck Surgery, Baskent University Faculty of Medicine, Ankara, Turkey
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Kebudi R, Dural O, Bay SB, Gorgun O, Onder S, Bilgic B, Yilmaz I, Iribas A, Arndt CA, Harris AK, Field A, Schultz KAP, Hill DA. Childhood Rhabdomyosarcoma of the Female Genital Tract: Association with Pathogenic DICER1 Variation, Clinicopathological Features, and Outcomes. J Pediatr Adolesc Gynecol 2021; 34:449-453. [PMID: 33484847 DOI: 10.1016/j.jpag.2021.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Received: 10/18/2020] [Revised: 12/23/2020] [Accepted: 01/14/2021] [Indexed: 12/17/2022]
Abstract
STUDY OBJECTIVE Rhabdomyosarcomas (RMSs) of the female genital tract (FGT) have been recently shown to be associated with germline pathogenic variation in DICER1, which can underlie a tumor predisposition disorder. We sought to determine the incidence of a pathogenic variation in DICER1 in a cohort of RMSs of the FGT, as well as to evaluate the clinicopathological features and outcomes of the patients. DESIGN, SETTING, PARTICIPANTS, INTERVENTIONS, AND MAIN OUTCOME MEASURES: We retrospectively reviewed medical records of the patients diagnosed with RMS of the FGT between 1990 and 2019. Molecular genetic sequencing of the tumor to detect an RNase IIIb domain hot spot mutation in DICER1 samples was performed in 7 patients. Individuals with a missense mutation in the tumor were also screened for a loss of function germline mutation in DICER1. RESULTS Of 210 cases of pediatric RMS, 11 arose from the FGT. Molecular genetic sequencing of the tumor samples revealed a somatic missense mutation in the RNase IIIb domain of DICER1 in a total of 3 patients, 2 patients with embryonal RMS of the cervix/uterus, and 1 patient with ovarian embryonal RMS. As a result of genetic testing for the loss of function germline mutation in DICER1, a heterozygous pathogenic variant was also found in 2 of these patients. CONCLUSION Despite the limited number of patients, our findings suggest that it is important to be aware of the possible association between RMS of FGT and pathogenic germline DICER1 variants because the detection of this mutation in a patient or relatives can provide the opportunity for surveillance of related conditions that might improve long-term outcomes and survival.
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Affiliation(s)
- Rejin Kebudi
- Division of Pediatric Hematology-Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey.
| | - Ozlem Dural
- Department of Obstetrics and Gynecology, Istanbul University, School of Medicine, Istanbul, Turkey
| | - Sema Buyukkapu Bay
- Division of Pediatric Hematology-Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - Omer Gorgun
- Division of Pediatric Hematology-Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - Semen Onder
- Department of Pathology, Istanbul University, School of Medicine, Istanbul, Turkey
| | - Bilge Bilgic
- Department of Pathology, Istanbul University, School of Medicine, Istanbul, Turkey
| | - Ismail Yilmaz
- University of Health Sciences, Department of Pathology, Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Ayca Iribas
- Radiation Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - Carola A Arndt
- Department of Pediatric and Adolescent Medicine, Mayo Clinic and Foundation, Rochester, Minnesota
| | - Anne K Harris
- International Pleuropulmonary Blastoma/DICER1 Registry, Minneapolis, Minnesota; International Ovarian and Testicular Stromal Tumor (OTST) Registry, Minneapolis, Minnesota; Cancer and Blood Disorders, Children's Minnesota, Minneapolis, Minnesota
| | | | - Kris Ann P Schultz
- International Pleuropulmonary Blastoma/DICER1 Registry, Minneapolis, Minnesota; International Ovarian and Testicular Stromal Tumor (OTST) Registry, Minneapolis, Minnesota; Children's Minnesota, Minneapolis, Minnesota
| | - D Ashley Hill
- ResourcePath, Sterling, Virginia; Department of Pathology, Children's National Health System, Washington, DC; George Washington University School of Medicine and Health Sciences, Washington, DC
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Yilmaz I, Ozden D, Arslan GG. Intensive care nurses' evidence-based knowledge and experiences regarding closed suctioning system. Niger J Clin Pract 2021; 24:883-891. [PMID: 34121737 DOI: 10.4103/njcp.njcp_211_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Endotracheal suctioning is a vital procedure performed by intensive care nurses to maintain airway patency and optimal gas exchange in critically ill patients under mechanical ventilation. As the procedure can cause several complications, intensive care nurses should have adequate evidence-based knowledge on how to perform the procedure. Aims This study aimed at examining intensive care nurses' knowledge and experience of the closed suctioning system. This study was a prospective, cross-sectional, descriptive, and multi-centered study conducted with 195 nurses working in the tertiary intensive care units in five Turkish hospitals. Subjects and Methods The data were collected with a questionnaire developed by the researchers in light of the literature. The data were evaluated with Kruskal-Wallis and Mann-Whitney U tests. Results The mean age of the nurses was 30.58 ± 6.28 years. The mean knowledge score of the nurses for the closed system was 27.35 ± 12.05 (range = 0-80) and 80.5% of them obtained scores ranging between 0 and 40. Also, 71.8% stated that they did not have any difficulty performing suctioning with the closed system catheter, and 85% said that they saved time with the closed system. However, 50.8% of the nurses said they were not able to suction viscous and sticky secretions efficiently, 44.6% stated they did not need to irrigate the inside of the catheter, and 45.1% of them were undecided whether the coude tip catheter led to hemorrhagic secretion more than straight tip catheter. Conclusions Almost one-fifth of the nurses had good scores on evidence-based knowledge of suctioning. Most of the nurses' experiences regarding the use and manipulation of the closed system were positive. However, almost half of the nurses pointed out that the closed system was not effective enough to suction viscous and sticky secretions. Regular in-service training sessions may help to improve nurses' current knowledge and experiences.
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Affiliation(s)
- I Yilmaz
- Dokuz Eylul University, Institute of Health Sciences; Department of Fundamentals Nursing, Dokuz Eylul University, Faculty of Nursing, Balcova, Izmir, Turkey
| | - D Ozden
- Department of Fundamentals Nursing, Dokuz Eylul University, Faculty of Nursing, Balcova, Izmir, Turkey
| | - G G Arslan
- Department of Fundamentals Nursing, Dokuz Eylul University, Faculty of Nursing, Balcova, Izmir, Turkey
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Sahin S, Romano M, Guzel F, Kasapcopur O, Piskin D, Yilmaz I, Demirkaya E. POS1375 THE EFFECT OF M694V HOMOZYGOSITY ON THE CAROTID INTIMA-MEDIA THICKNESS AND FLOW MEDIATED DILATATION IN PATIENTS WITH FMF RELATED AMYLOIDOSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3582] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:There are limited data in FMF associated AA amyloidosis patients regarding the vascular abnormalities including atherosclerosis and endothelial dysfunction, all of which are contributors of cardiovascular disease (CVD) risk. And, this risk assessment for future CV events have not yet been evaluated between FMF amyloidosis patients with different genotypes.Objectives:We aimed to compare early markers of endothelial dysfunction and atherosclerosis, mortality and other disease characteristics in FMF-related amyloidosis patients with a homozygous M694V genotype and in patients with other genotypes with this cross-sectional comparative study.Methods:For this purpose, patients with FMF-related amyloidosis were assigned according to the MEFV gene mutation to one of the two groups. Group 1: Patients homozygous for M694V (which is the most common genotype associated with the most severe clinical phenotype in FMF) Group 2: Patients homozygous (other than M694V) or compound heterozygous (including M694V) for other MEFV variants. Potential confounders were controlled by excluding the patients with untreated hypertension, diabetes mellitus, obesity, smoking, previous history of CVD low glomerular filtration rate (eGFR <70 mL/min). Flow-mediated dilatation (FMD), pentraxin-3 (PTX3) as early markers of endothelial dysfunction and carotid intima-media thickness (cIMT), fibroblast Growth Factor 23 (FGF23) as an indicator of atherosclerotic vascular disease, all of which are non-invasive tests that are also used to identify subjects at increased risk for future CV events were measured in these 2 groups.Results:We analyzed demographic, clinical, genetic, survival data and these non-invasive markers of endothelial dysfunction (FMD and PTX3) and atherosclerosis (cIMT and FGF23) in 76 FMF amyloidosis patients with homozygous M694V mutations (Group 1) and 93 FMF amyloidosis patients with two pathogenic mutations apart from M694V homozygosity (Group 2) (Table 1). Brachial artery FMD was significantly lower in Group 1 when compared with Group 2 subjects (6.0 vs. 6.5%, p<0.001). cIMT, FGF23 and PTX3 levels were higher in Group 1 when compared with Group 2 (cIMT: 0.84 vs. 0.67 mm, p<0.001; FGF23: 52.4 vs. 38.0 pg/dL, p=0.01; PTX3: 14.0 vs. 3.2 ng/mL, p<0.001). Time to develop amyloidosis was similar in patients homozygous for M694V (median 10.0 years, 95%CI: 8.99-11.0) and in Group 2 (median 10.0 years, 95%CI: 8.97-11.0) (p>0.05). Mortality rate was significantly higher in Group 1 compared to Group 2 (18.4% vs. 1.1%, p<0.001) over a median of 7.8 years of follow-up. FMF amyloidosis patients homozygous for M694V had reduced survival (mean survival: 97 months, 95%CI: 94.9 to 101.0 months) as compared to Group 2 (mean survival: 100.7 months, 95%CI: 100.0 to 101.3 months) (p<0.001) (Figure 1). The proportion of the clinical manifestations including fever, serositis, erysipelas-like erythema, all of which are associated with an FMF attack did not differ between two groups (p>0.05) apart from arthritis (76.3% in Group 1 and 59.1% in Group 2, p<0.05) (Table 1).Conclusion:In patients with FMF related amyloidosis, M694V homozygosity is associated with lower FMD values and higher cIMT, FGF23 and PTX3 levels. In summary, the data demonstrate that a genotype-phenotype association exists in terms of endothelial dysfunction and atherosclerosis in FMF patients with amyloidosis.Table 1.Group 1 (n=76)Group 2 (n=93)Total (n=169)pClinical Findingsn (%)n (%)n (%)Dialysis2 (2.6)3 (3.2)5 (3.0) 1.00*Kidney transplantation5 (6.6)4 (4.3)9 (5.3)0.73*Kidney biopsy68 (89.5)85 (91.4)153 (90.5)0.67Median(Min-max)Median(Min-max)Median(Min-max)Age (years)36.5 (19.0-49.0)35.0 (22.0-49.0)36.0 (19.0-49.0)0.16Age of amyloidosis (years)20.0 (13.0-31.0)20.0 (15.0-26.0)20.0 (13.0-31.0)0.86BMI (kg/m2)26.0 (21.0-32.0)27.0 (19.0-32.0)26.6 (29.0-32.0)0.89HOMA2.2 (1.2-7.3)2.4 (1.1-8.4)2.4 (1.1-8.4)0.40Proteinuria (g/24h)7.64,65.4<0.001Disclosure of Interests:None declared
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Mermer Z, Yavuz O, Atasen SK, Alcay Y, Yilmaz I. Architecture of multi-channel and easy-to-make sensors for selective and sensitive Hg 2+ ion recognition through Hg‒C and Hg‒N bonds of naphthoquinone-aniline/pyrene union. J Hazard Mater 2021; 410:124597. [PMID: 33309140 DOI: 10.1016/j.jhazmat.2020.124597] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 11/05/2020] [Accepted: 11/12/2020] [Indexed: 06/12/2023]
Abstract
The aim of this work is, for the first time, to develop new inexpensive, easy-to-make and multi-channel receptors, naphthoquinone-aniline/pyrene union ((Nq-An) and (Nq-Pyr)) and their Hg2+ complexes [Hg-(Nq-An)2] and [Hg-(Nq-Pyr)2] to supply an efficient solution to critical deficiencies to be encountered for Hg2+ recognition. This study is based on colorimetric, fluorometric, and voltammetric methods for determination of Hg2+ ions through Hg-C and Hg-N binding mode of the naphthoquinone-aniline/pyrene union in aqueous media. The binding mode of the receptors with Hg2+ cation was confirmed by usual characterization techniques for the synthesized Hg2+-complexes [Hg-(Nq-An)2] / [Hg-(Nq-Pyr)2] and voltammetric, 1H NMR titration experiments as well as Job's method, indicating a 2:1 complex between the receptors and Hg2+ cation. The receptors showed a considerable color switching from orange to pink along with a red-shift of absorption wavelength, and fluorescence enhancement via the Chelation Enhanced Fluorescence effect (CHEF), and distinctive changes on the voltammogram of the electroactive naphthoquinone unit with Hg2+ cation. The experiments indicate that the sensors are highly selective and sensitive toward Hg2+ among the studied metal ions in aqueous media compared with other reported Hg2+ sensors.
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Affiliation(s)
- Zeliha Mermer
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | | | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey.
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Onder S, Hurdogan O, Bayram A, Yilmaz I, Sozen H, Yavuz E. The role of FOXL2, SOX9, and β-catenin expression and DICER1 mutation in differentiating sex cord tumor with annular tubules from other sex cord tumors of the ovary. Virchows Arch 2021; 479:317-324. [PMID: 33566167 DOI: 10.1007/s00428-021-03052-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/22/2021] [Accepted: 02/03/2021] [Indexed: 12/15/2022]
Abstract
Sex cord tumor with annular tubules (SCTAT) is a highly rare type of ovarian sex cord-stromal tumor (SCST), the diagnosis of which remains to be challenging. The aim of this study was to scrutinize the utility of three immunohistochemical markers including Forkhead box protein 2 (FOXL2), SOX9, and β-catenin and DICER1 mutation status in distinguishing SCTATs from other ovarian SCSTs. Nine cases of SCTAT, 10 Sertoli-Leydig cell tumor (SCLT), 10 adult-type granulosa cell tumor (AGCT), and 8 juvenile-type granulosa cell tumor (JGCT) were included in the study. SCTATs were characterized by diffuse and strong expression of SOX9, focal and weak expression of FOXL2, and the absence of DICER1 mutation. However, AGCTs and JGCTs displayed strong and diffuse expression of FOXL2, focal/no immunoreaction for SOX9. SLCTs generally showed moderate intensity of FOXL2 and SOX9 expression. Nuclear β-catenin expression was observed in none of SLCT, 1/9 of SCTAT, 6/8 JGCT, and 4/10 AGCT cases, respectively. DICER1 hotspot mutation was detected in only 3 cases of SLCT and 2 cases of JGCT. We conclude that in addition to strong and diffuse SOX9 expression, weak/absent expression of FOXL2 is suggestive for the diagnosis of SCTAT. Hence, we suggest that inclusion of these two markers, SOX-9 and FOXL2, to the immunohistochemical panel helps in differentiation of SCTAT from other SCSTs in addition to morphologic findings. We also conclude that SCTATs of the ovary do not harbor DICER1 hotspot mutation.
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Affiliation(s)
- Semen Onder
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34093, Istanbul, Turkey
| | - Ozge Hurdogan
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34093, Istanbul, Turkey.
| | - Aysel Bayram
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34093, Istanbul, Turkey
| | - Ismail Yilmaz
- Department of Pathology, Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Hamdullah Sozen
- Department of Obstetrics and Gynecology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Ekrem Yavuz
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Capa, 34093, Istanbul, Turkey
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Versace DL, Breloy L, Yagci Y, Yilmaz I, Yavuz O. Design, Synthesis and Use of Phthalocyanines as a New Class of Visible-Light Photoinitiators for Free-Radical and Cationic Polymerizations. Polym Chem 2021. [DOI: 10.1039/d1py00462j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phthalocyanines (Pcs) are interesting molecules offering a fascinating chemistry world which received tremendous interest in the last decade. Their certain features such as high thermal, chemical, and optical stability as...
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Breloy L, Alcay Y, Yilmaz I, Breza M, Bourgon J, Brezová V, Yagci Y, Versace DL. Dimethyl amino phenyl substituted silver phthalocyanine as a UV- and visible-light absorbing photoinitiator: in situ preparation of silver/polymer nanocomposites. Polym Chem 2021. [DOI: 10.1039/d0py01712d] [Citation(s) in RCA: 4] [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: 11/21/2022]
Abstract
Synthesis of a novel phthalocyanine for dual free-radical and cationic photopolymerizations and the in situ preparation of nanocomposites without using metal salts.
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Affiliation(s)
- Louise Breloy
- Institut de Chimie et de Matériaux Paris-Est (ICMPE)
- Equipe Systèmes Polymères Complexes
- CNRS-UPEC UMR 7182
- Thiais
- France
| | - Yusuf Alcay
- Istanbul Technical University
- Department of Chemistry
- Istanbul
- Turkey
| | - Ismail Yilmaz
- Istanbul Technical University
- Department of Chemistry
- Istanbul
- Turkey
| | - Martin Breza
- Slovak University of Technology in Bratislava
- Faculty of Chemical and Food Technology
- Institute of Physical Chemistry and Chemical Physics
- Department of Physical Chemistry
- SK-812 37 Bratislava
| | - Julie Bourgon
- Institut de Chimie et de Matériaux Paris-Est (ICMPE)
- Equipe Systèmes Polymères Complexes
- CNRS-UPEC UMR 7182
- Thiais
- France
| | - Vlasta Brezová
- Slovak University of Technology in Bratislava
- Faculty of Chemical and Food Technology
- Institute of Physical Chemistry and Chemical Physics
- Department of Physical Chemistry
- SK-812 37 Bratislava
| | - Yusuf Yagci
- Istanbul Technical University
- Department of Chemistry
- Istanbul
- Turkey
| | - Davy-Louis Versace
- Institut de Chimie et de Matériaux Paris-Est (ICMPE)
- Equipe Systèmes Polymères Complexes
- CNRS-UPEC UMR 7182
- Thiais
- France
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Kostakoglu U, Kant A, Atalar S, Ertunc B, Erensoy S, Dalmanoglu E, Yilmaz I, Sevimli B, Erturk A, Yilmaz G. Diagnostic value of Chest CT and Initial Real-Time RT-PCR in COVID-19 Infection. Pak J Med Sci 2020; 37:234-238. [PMID: 33437283 PMCID: PMC7794132 DOI: 10.12669/pjms.37.1.2956] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Objectives: To evaluate the diagnostic value of the rtRT-PCR test and CT in patients presenting with typical clinical symptoms of COVID-19. Methods: The study with the participation of four center in Turkey was performed retrospectively from 20 March-15 April 2020 in 203 patients confirmed for COVID-19. The initial rtRT-PCR test was positive in 142 (70.0%) of the patients (Group-I) and negative in 61 patients (Group-II). Results: The mean age of the patients in Group-I was 49.7±18.0 years and the time between the onset of symptoms and admission to the hospital was 3.6±2.0 days; whereas the same values for the patients in Group-II were 58.1±19.9 and 5.3±4.2, respectively (p=0.004; p=0.026). Initial rtRT-PCR was found positive with 83.5% sensitivity and 74.1% PPV in patients with symptom duration of less than five days. It was found that rtRT-PCR positivity correlated negatively with the presence of CT findings, age, comorbidity, shortness of breath, and symptom duration, while rtRT-PCR positivity correlated positively with headache. Presence of CT findings was positively correlated with age, comorbidity, shortness of breath, fever, and the symptom duration. Conclusions: It should be noted that a negative result in the rtRT-PCR test does not rule out the possibility of COVID-19 diagnosis in patients whose symptom duration is longer than five days, who are elderly with comorbidities and in particular who present with fever and shortness of breath. In these patients, typical CT findings are diagnostic for COVID-19. A normal chest CT is no reason to loosen up measures of isolation in patients with newly beginning symptoms until the results are obtained from the PCR test.
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Affiliation(s)
- Ugur Kostakoglu
- Ugur Kostakoglu, Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Aydin Kant
- Aydin Kant, Chest Diseases Department, Trabzon Vakfikebir State Hospital, Trabzon, Turkey
| | - Serhat Atalar
- Serhat Atalar, Department of Infection Diseases and Clinical Microbiology, Niksar State Hospital, Tokat, Turkey
| | - Baris Ertunc
- Baris Ertunc, Department of Infection Diseases and Clinical Microbiology, Akcaabat HackalIbaba State Hospital, Trabzon, Turkey
| | - Sukru Erensoy
- Sukru Erensoy, Department of Infection Diseases and Clinical Microbiology, Yavuz Selim Bone Diseases and Rehabilitation Hospital, Trabzon, Turkey
| | - Enes Dalmanoglu
- Enes Dalmanoglu, Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Ismail Yilmaz
- Ismail Yilmaz, Chest Diseases Department, Akcaabat HackalIbaba State Hospital, Trabzon, Turkey
| | - Belgin Sevimli
- Belgin Sevimli, Department of Ophthalmology, Trabzon Vakfikebir State Hospital, Trabzon, Turkey
| | - Ayse Erturk
- Ayse Erturk, Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, Rize, Turkey
| | - Gurdal Yilmaz
- Gurdal Yilmaz Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
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Yilmaz I, Karaarslan N, Yasar Sirin D, Ozbek H. Pharmaco-molecular assessment of the effects of anandamide and its antagonists on hippocampal tissue in Wistar albino rats. Eur Rev Med Pharmacol Sci 2020; 24:11871-11882. [PMID: 33275258 DOI: 10.26355/eurrev_202011_23845] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The members of the matrix metalloproteinase (MMP) family and cannabinoids (CBs) are reportedly associated with hippocampus-dependent memory functions. However, the effects of endogenously formed CBs on hippocampal long-term potentiation remain unknown. The present study aimed to investigate the changes in the gene and protein expression levels of matrix metallopeptidase 9 (MMP-9), phosphatase and tensin homolog (PTEN), and NOTCH receptor 1 (NOTCH1) in rat hippocampal tissues treated with anandamide (AEA), AM251, 6-iodopravadolin (AM630), and N-[4-{[(3,4-Dimethyl-5-isoxazolyl)amino]sulfonyl}phenyl] (ML193). MATERIALS AND METHODS The subjects were divided into 10 groups (n = five per group). The pharmaceuticals were administered via intraperitoneal injection once a day for seven days, except for the control group. The resected hippocampal tissues were then evaluated using a quantitative real-time polymerase chain reaction (RT-qPCR) and Western blot analysis. The data obtained were statistically analyzed, and p < 0.01 was considered statistically significant. RESULTS Contrary to the literature, the changes in MMP-9 expression were not statistically significant, but the changes in PTEN and NOTCH1 were. The findings of this in vivo experimental study revealed that the agonists and antagonists acting on the CB system have significant molecular effects on hippocampal tissue. CONCLUSIONS The changes in gene and protein expressions may be one of the reasons for the neurodegenerative processes observed in patients using these agonists and antagonists, whose effects on the CB system have not been fully explained yet. Our study can contribute to the literature as it is the first study investigating the MMP-9, PTEN and NOTCH1 gene and protein expression.
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Affiliation(s)
- I Yilmaz
- Department of Medical Pharmacology, Istanbul Medipol University School of Medicine, Turkey.
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Erkul E, Yilmaz I. TERT promoter mutation in patients with second primary of tongue squamous cell carcinoma. Oral Oncol 2020; 114:105089. [PMID: 33189577 DOI: 10.1016/j.oraloncology.2020.105089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 12/16/2022]
Abstract
It is well known that head and neck squamous cell carcinomas are characterized by genetic alterations, genomic instability and different immune defects and Telomerase reverse transcriptase promoter mutations have been found with high rates in patients with tongue squamous cell carcinomas. We presented a non-smoker, no alcohol consuming woman who had a second primary tongue SCC after four and a half years later of her first tongue SCC with TERT promoter mutation. The primary tumor and its recurrences in woman with tongue SCC who have never smoked and had no alcohol consumption may need to be differing from other tongue carcinomas. TERT promoter mutations may have a relation in etiopathogenesis of tumor and mutations need to be on mind in future studies.
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Affiliation(s)
- Evren Erkul
- Department of Otorhinolaryngology, Hamidiye Medical School, Sultan II. Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey.
| | - Ismail Yilmaz
- Department of Pathology, Sultan II. Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
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Akata I, Yilmaz I, Kaya E, Coskun NC, Donmez M. Toxin components and toxicological importance of Galerina marginata from Turkey. Toxicon 2020; 187:29-34. [PMID: 32866473 DOI: 10.1016/j.toxicon.2020.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 07/10/2020] [Revised: 08/13/2020] [Accepted: 08/19/2020] [Indexed: 12/30/2022]
Abstract
Amatoxins, most of which are hepatotoxic, can cause fatal intoxication. While mushrooms in the amatoxin-containing Galerina genus are rare, they can poison humans and animals worldwide. Few studies have profiled the toxicity of Galerina marginata. In addition, many studies indicate that macrofungi can have different characteristics in different regions. In this study, the quantities of toxins present in G. marginata from different provinces in Turkey were analysed using reversed-phase high-performance liquid chromatography with ultraviolet detection (RP-HPLC-UV) and liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS). G. marginata samples were collected from three different regions of Turkey. The taxonomic categorization of mushrooms was based on their micro- and macroscopic characteristics. The presence of toxins α-amanitin (AA), β-amanitin (BA), γ-amanitin (GA), phalloidin (PHD) and phallacidin (PHC) quantities were measured using RP-HPLC-UV and then were confirmed using LC-ESI-MS/MS. BA levels were higher than AA levels in G. marginata mushrooms collected from all three regions. Moreover, the levels of GA were below the detection limit and no phallotoxins were detected. This is the first study to identify and test the toxicity of G. marginata collected from three different regions of Turkey using RP-HPLC-UV. This is also the first study to confirm the UV absorption of amatoxins in G. marginata using LC-ESI-MS/MS, which is a far more sensitive process. More studies evaluating the toxicity of G. marginata in other geographic regions of the world are needed.
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Affiliation(s)
- Ilgaz Akata
- Department of Biology, Faculty of Science, Ankara University, Ankara, Turkey
| | - Ismail Yilmaz
- Department of Pharmacology and Toxicology, Izmir Kâtip Celebi University School of Medicine, Izmir, Turkey.
| | - Ertugrul Kaya
- Department of Pharmacology, Duzce University School of Medicine, Duzce, Turkey
| | - Nuri Cenk Coskun
- Department of Pharmacology, Duzce University School of Medicine, Duzce, Turkey
| | - Mert Donmez
- Department of Natural, Herbal and Cosmetic Products, Duzce University, Duzce, Turkey
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Coskun S, Gamsizkan M, Yilmaz I, Yalcinkaya U, Sungur MA, Buyucek S, Onal B. BRAF mutation, TERT promoter mutation, and HER2 amplification in sporadic or neurofibromatosis-related neurofibromas and malignant peripheral nerve sheath tumors: do these molecules have a signature in malignant transformation? APMIS 2020; 128:515-522. [PMID: 32580246 DOI: 10.1111/apm.13063] [Citation(s) in RCA: 1] [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] [Received: 12/18/2019] [Accepted: 06/16/2020] [Indexed: 11/28/2022]
Abstract
Peripheral nerve sheath tumors may occur sporadically or related to neurofibromatosis (NF). Unless the mechanisms of tumorigenesis in NF related malignant peripheral nerve sheath tumors (MPNST) are better understood, it remained unclear in sporadic cases. We aimed to investigate the genetic route for malignancy in both individuals with NF-1 and sporadic ones to open a way for targeted therapies in the future. We investigated the role of HER2 with Dual ISH DNA Probe Cocktail test, BRAF mutation (exon 15) and TERT promoter mutation frequency with Sanger sequencing method in respectively 25 sporadic neurofibromas, 25 NF-1 related neurofibromas and 25 MPNST cases from two institutes. Categorical data were analyzed and summarized as frequency and percentage. Statistical analysis was done with SPSS v.22 statistical package, and the statistical significance level was considered as 0.05. We identified TERT promoter mutation only in one sporadic MPNST (4%) and no BRAF mutation in any case. HER2 amplification is found in 10/25 (40%) MPNST cases. No mutations or gene amplification detected in neurofibromas (p < 0.001). MPNSTs are sarcomas with poor prognosis and limited treatment options. TERT promoter mutations and HER2 amplification may play a putative role in therapeutic purposes.
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Affiliation(s)
- Sinem Coskun
- Department of Pathology and Cytology, School of Medicine, Duzce University, Duzce, Turkey
| | - Mehmet Gamsizkan
- Department of Pathology and Cytology, School of Medicine, Duzce University, Duzce, Turkey
| | - Ismail Yilmaz
- Department of Pathology, School of Medicine, Istanbul Sultan Abdulhamid Khan Training and Research Hospital, Istanbul, Turkey
| | - Ulviye Yalcinkaya
- Department of Pathology, School of Medicine, Uludag University, Bursa, Turkey
| | - Mehmet Ali Sungur
- Department of Statistics, School of Medicine, Duzce University, Duzce, Turkey
| | - Seyma Buyucek
- Department of Pathology and Cytology, School of Medicine, Duzce University, Duzce, Turkey
| | - Binnur Onal
- Department of Pathology and Cytology, School of Medicine, Duzce University, Duzce, Turkey
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Kebudi R, Bay Buyukkapu S, Gorgun O, Dural O, Onder S, Bilgic B, Yilmaz I, Iribas A, Arndt CAS, Harris A, Field A, Schultz KAP, Hill A, Darendeliler E. Rhabdomyosarcoma of the female genital tract: Long-term outcome and association with DICER1 variation. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.15_suppl.10538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
10538 Background: Rhabdomyosarcoma (RMS) of the female genital tract is rare, accounting for 3.5% of cases of rhabdomyosarcomas. Germline DICER1 mutations are associated with predisposition to pleuropulmonary blastoma and other tumors including sarcomas. Recently DICER1-associated RMS of the uterus/ovary has ben reported.. The aim of this study is to evaluate demographic characteristics, molecular pathogenesis, treatment and long term outcome of female genital tract rhabdomyosarcoma. Methods: Files of children with RMS of the female genital tract diagnosed at the Istanbul University, Oncology Institute during 1990-2019 were reviewed. Molecular genetic sequencing was performed by polymerase chain reaction amplification of genomic DNA extracted from the formalin-fixed, paraffin embedded tumors, followed by Sanger sequencing. Genetic testing for DICER1 variants of the proband and family members was performed if DICER1 mutation was detected in the tumor of the proband. Results: Of 210 RMS cases, 11 arose from the female genital tract. The median age at diagnosis was 52 months (10 months-15 years). Primary sites were vaginal (n = 5), uterus (n = 4), and ovary(n = 2). Presenting symptoms included vaginal mass (n = 6), vaginal bleeding (n = 5), and abdominal pain (n = 3). Four had group 1, five group 3, two group 2 disease and all received chemotherapy (vincristine, actinomycinD + cyclophosphamide).Three received radiotherapy; three underwent hysterectomy. DICER1 mutation was detected in tumor tissue in three patients:[ c.5113G > A (p.E1705K); c.5428G > T (p.D1810Y); c.1870C > T (p.Arg624Ter)] Genetic testing revealed germline DICER1 pathogenic variation in two patients and their family members, one of whom had cystic nephroma in infancy and history of Wilms tumor in an uncle. They were referred for surveillance for the DICER1 related diseases. A patient with metachronous bilateral ovarian RMS died. Two are married, one has children. The 5 year survival for RMS of the female genital tract was 85.7 % at a median follow-up of 34 (4-298) months. Conclusions: Rhabdomyosarcoma of the female genital tract is associated with a favorable prognosis, however some individuals undergo aggressive local therapies. Individuals with RMS of the female genital tract should be tested for DICER1 pathogenic variation. The detection of a DICER1 mutation in an individual or family members is important to facilitate surveillance for related tumors, so that they may be detected at the earliest possible stage, potentially increasing survival and decreasing risks of late effects.
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Affiliation(s)
- Rejin Kebudi
- Istanbul University, Oncology Institute, Pediatric Hematology-Oncology, Istanbul, Turkey
| | - Sema Bay Buyukkapu
- Istanbul University, Oncology Institute, Pediatric Hematology-Oncology, Istanbul, Turkey
| | - Omer Gorgun
- Istanbul University, Oncology Institute, Pediatric Hematology-Oncology, Istanbul, Turkey
| | - Ozlem Dural
- Istanbul University, Istanbul Medical Faculty, Dept.of Obstetrics and Gynecology, Istanbul, Turkey
| | - Semen Onder
- Istanbul University, Istanbul Medical Faculty, Dept. of Pathology, Istanbul, Turkey
| | - Bilge Bilgic
- Istanbul University, Istanbul Medical Faculty, Dept. of Pathology, Istanbul, Turkey
| | - Ismail Yilmaz
- Sultan Abdulhamid Han Training and Research Hospital, Dept. of Pathology, Istanbul, Turkey
| | - Ayca Iribas
- Istanbul University, Oncology Institute, Radiation Oncology, Istanbul, Turkey
| | | | - Anne Harris
- Children's Hospitals and Clinics of Minnesota, Minneapolis, MN
| | | | | | - Ashley Hill
- George Washington University School of Medicine and Health Sciences, Dept. of Pathology, Washington, WA
| | - Emin Darendeliler
- Istanbul University, Oncology Institute, Radiation Oncology, Istanbul, Turkey
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Yilmaz I, Erkul BE, Ozturk Sari S, Issin G, Tural E, Terzi Kaya Terzi N, Karatay H, Celik M, Ulusan M, Bilgic B. Promoter region mutations of the telomerase reverse transcriptase (TERT) gene in head and neck squamous cell carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 130:63-70. [PMID: 32404253 DOI: 10.1016/j.oooo.2020.02.015] [Citation(s) in RCA: 5] [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] [Received: 09/18/2019] [Revised: 01/07/2020] [Accepted: 02/17/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The aim of the present study was to assess the prevalence of TERT promoter region mutations in tumor samples of patients with squamous cell carcinoma at different sites of the head and neck region and correlate it with patients' clinicopathologic data. STUDY DESIGN Mutations in promoter region of the TERT gene were analyzed with polymerase chain reaction-based direct sequencing method using formalin-fixed, paraffin-embedded tumor samples of 189 HNSCCs. TERT promoter region mutations were assessed in terms of age, gender, location, smoking, alcohol consumption, and overall survival. RESULTS TERT promoter region mutations were detected in the oral cavity (75%); larynx (8.4%), hypopharynx (16.6%), and oropharynx (0%). TERT promoter region mutations are associated with younger age and female gender and have a reverse relationship with smoking and alcohol consumption. CONCLUSIONS We found statistically significant higher rates of TERT promoter region mutations in tumor samples of patients with squamous cell carcinoma in the oral cavity compared with other locations in the head and neck region.
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Affiliation(s)
- Ismail Yilmaz
- Department of Pathology, Sultan Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey.
| | - Bulent Evren Erkul
- Department of Otorhinolaryngology, Gulhane Medical School, Sultan Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Sule Ozturk Sari
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Gizem Issin
- Department of Pathology, Mengucek Gazi Education and Research Hospital, Erzincan University, Erzincan, Turkey
| | - Ersin Tural
- Department of Pediatrics, Sultan Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Neslihan Terzi Kaya Terzi
- Department of Pathology, Sultan Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Huseyin Karatay
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Mehmet Celik
- Department of Otorhinolaryngology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Murat Ulusan
- Department of Otorhinolaryngology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Bilge Bilgic
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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43
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Hurdogan O, Yilmaz I, Bay SB, Vural S, Tugcu D, Kebudi R, Gun F, Ozkan B, Bilgic B, Firat P, Yilmazbayhan D, Ozluk Y. DICER1 Hotspot Mutations in Pleuropulmonary Blastoma: A Case Series From a Tertiary Center. Pediatr Dev Pathol 2020; 23:204-209. [PMID: 31603374 DOI: 10.1177/1093526619878602] [Citation(s) in RCA: 1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Pleuropulmonary blastoma (PPB) is a potentially aggressive, rare childhood neoplasia. We investigated histopathological features, survival, and DICER1 hotspot mutations among PPB patients. Archive records at our institution were reviewed, covering a 20-year period. Thirteen children (6 males and 7 females) with a mean age of 30.5 (range 6-83) months were included. The tumor subtypes were type I in 6 (46%), type II in 4 (31%), and type III in 3 (23%). Only tumors with type II and type III histology showed anaplasia (4/7, 57%). Median follow-up was 28 (range 9-216) months. Three-year overall survival rate was 83.3% and 3-year progression-free survival rate was 25%. Progression was seen in 60% (3/5) of type I and 66.7% (4/6) of type II and type III cases. Two patients died of disseminated disease at 9 and 44 months. Hotspot missense mutations on DICER1 gene were detected in all 11 patients with available tumor tissue. We found an additional novel germline loss-of-function mutation (c.5436dupT; p.E1813*) in 1 case. To the best of our knowledge, this is the first study to investigate hotspot missense mutations on DICER1 gene among the largest series of Turkish children with PPB.
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Affiliation(s)
- O Hurdogan
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - I Yilmaz
- Department of Pathology, Sultan Abdulhamid Han Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - S B Bay
- Division of Pediatric Hematology-Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey
| | - S Vural
- Department of Pediatric Oncology, Sisli Etfal Training and Research Hospital, Istanbul, Turkey
| | - D Tugcu
- Department of Pediatric Hematology-Oncology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - R Kebudi
- Division of Pediatric Hematology-Oncology, Oncology Institute, Istanbul University, Istanbul, Turkey.,Department of Pediatric Oncology, Cerrahpasa Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - F Gun
- Department of Pediatric Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - B Ozkan
- Department of Thoracic Surgery, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - B Bilgic
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - P Firat
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - D Yilmazbayhan
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Y Ozluk
- Department of Pathology, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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Dural O, Kebudi R, Yavuz E, Yilmaz I, Buyukkapu Bay S, Schultz KAP, Hill DA. DICER1-Related Embryonal Rhabdomyosarcoma of the Uterine Corpus in a Prepubertal Girl. J Pediatr Adolesc Gynecol 2020; 33:173-176. [PMID: 31838154 PMCID: PMC7459144 DOI: 10.1016/j.jpag.2019.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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] [Received: 09/29/2019] [Revised: 12/01/2019] [Accepted: 12/08/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND Germline DICER1 mutations increase the risk of developing a wide variety of generally uncommon tumors. We describe a case of DICER1-related embryonal rhabdomyosarcoma (ERMS) of the uterine corpus in a prepubertal girl. CASE A 10-year-old- girl with a history of cystic nephroma presented with a 3-week history of vaginal bleeding. A 3-cm mass filling the uterine cavity was detected, and histopathologic examination of hysteroscopy-guided biopsy samples revealed ERMS. Molecular genetic sequencing of the tumor sample revealed a DICER1 mutation. SUMMARY AND CONCLUSION This report highlights the importance of screening for DICER1 mutations in the presence of the early-onset features of this syndrome, and extends the spectrum of DICER1-related tumors by showing the mutation in a case of ERMS of the uterine corpus.
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Affiliation(s)
- Ozlem Dural
- School of Medicine, Department of Obstetrics and Gynecology, Istanbul University, Istanbul, Turkey
| | - Rejin Kebudi
- Oncology Institute, Division of Pediatric Hematology-Oncology, Istanbul University, Istanbul, Turkey; School of Medicine, Pediatric Hematology and Oncology, Istanbul University, Istanbul, Turkey.
| | - Ekrem Yavuz
- School of Medicine, Department of Pathology, Istanbul University, Istanbul, Turkey
| | - Ismail Yilmaz
- Sultan Abdulhamid Han Training and Research Hospital, Department of Pathology, University of Health Sciences, Istanbul, Turkey
| | - Sema Buyukkapu Bay
- Oncology Institute, Division of Pediatric Hematology-Oncology, Istanbul University, Istanbul, Turkey
| | - Kris Ann P Schultz
- Children's Minnesota, Minneapolis, Minnesota; International Pleuropulmonary Blastoma/DICER1 Registry, Minneapolis, Minnesota; International Ovarian and Testicular Stromal Tumor (OTST) Registry, Minneapolis, Minnesota
| | - D Ashley Hill
- Department of Pathology, Children's National Health System, Washington, DC; George Washington University School of Medicine and Health Sciences, Washington, DC; ResourcePath LLC, Sterling, Virginia
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Breloy L, Brezová V, Blacha-Grzechnik A, Presset M, Yildirim MS, Yilmaz I, Yagci Y, Versace DL. Visible Light Anthraquinone Functional Phthalocyanine Photoinitiator for Free-Radical and Cationic Polymerizations. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b01630] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Louise Breloy
- Institut de Chimie et des Matériaux Paris-Est (ICMPE) − UMR-CNRS 7182 Equipe Systèmes Polymères Complexes (SPC) 2-8, rue Henri Dunant, 94320 Thiais, France
| | - Vlasta Brezová
- Institute of Physical Chemistry and Chemical Physics, Department of Physical Chemistry, Slovak University of Technology in Bratislava, Radlinského 9, SK-812 37 Bratislava, Slovak Republic
| | - Agata Blacha-Grzechnik
- Faculty of Chemistry, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Marc Presset
- Institut de Chimie et des Matériaux Paris-Est (ICMPE) − UMR-CNRS 7182 Equipe Systèmes Polymères Complexes (SPC) 2-8, rue Henri Dunant, 94320 Thiais, France
| | | | - Ismail Yilmaz
- Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Yusuf Yagci
- Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | - Davy-Louis Versace
- Institut de Chimie et des Matériaux Paris-Est (ICMPE) − UMR-CNRS 7182 Equipe Systèmes Polymères Complexes (SPC) 2-8, rue Henri Dunant, 94320 Thiais, France
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Affiliation(s)
- I Yilmaz
- Erciyes University School of Medicine, Department of Chest Diseases, Division of Immunology and Allergy, Kayseri, Turkey
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47
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Kurul NO, Ates F, Yilmaz I, Narli G, Yesildal C, Senkul T. The association of let-7c, miR-21, miR-145, miR-182, and miR-221 with clinicopathologic parameters of prostate cancer in patients diagnosed with low-risk disease. Prostate 2019; 79:1125-1132. [PMID: 31045265 DOI: 10.1002/pros.23825] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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] [Received: 10/18/2018] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND The diagnostic benefit of prostate specific antigen (PSA) is limited, owing to its lack of specificity, particularly in men with PSA levels of 4.0 to 10.0 ng/mL. Therefore, there is a need for more specific and sensitive biomarkers to improve diagnostic accuracy and to predict prostate cancer (PCa) progression. Assessing the expression levels of specific microRNAs (miRNAs) in patients with PCa may be helpful in detecting cancer and predicting the cancer prognosis and its evolution, and may serve as markers to decide the treatment. We examined the expression levels of five miRNAs (let-7c, miR-21, miR-145, miR-185, and miR-221) on patients with low-risk PCa who had been eligible for active surveillance but underwent radical prostatectomy. We investigated the correlation between the relative expression of miRNAs and clinicopathologic parameters to evaluate their clinical significance. MATERIALS AND METHODS Total RNA was isolated from the tumor and the corresponding non-neoplastic prostate tissue of 45 patients who underwent radical prostatectomy. Quantitative reverse transcriptase-polymerase chain reaction was used to measure the levels of let-7c, miR-21, miR-145, miR-185, miR-221, and RNU6B expression, using TaqMan MicroRNA Assays. miRNA expression was examined in low-risk PCa, and miRNAs' association with Gleason upgraded (GU) and biochemical recurrent (BR) patients was evaluated. RESULTS We observed that miR-21 and miR-182 were overexpressed; conversely, let-7c, miR-145, and miR-221 were underexpressed in patients with low-risk PCa. GU patients (n = 16) and non-upgraded patients (n = 28) were compared. miR-145 was downregulated significantly in the GU group (P = 0.03). Similarly, miR-221 was downregulated significantly in patients with BR (n = 14) compared with non-recurrent patients (n = 30) (P = 0.04). Receiver operator characteristics (ROC) curve analysis revealed that miR-221 levels were significantly associated with BR in patients with a cut-off <-1.666, a value at which sensitivity was 70% and specificity 71% (area under curve [AUC] = 0.705, P = 0.030). CONCLUSIONS There is still a need for a tumor marker with higher sensitivity and specificity than that of PSA. Among the five miRNAs examined, miR-221 was most associated with biochemical recurrence in low-risk PCa.
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Affiliation(s)
- N Ozgur Kurul
- Department of Urology, Duzici Public Hospital, Osmaniye, Turkey
| | - Ferhat Ates
- Department of Urology, Sultan Abdulhamid Han Training Hospital, Istanbul, Turkey
| | - Ismail Yilmaz
- Department of Pathology, Sultan Abdulhamid Han Training Hospital, Istanbul, Turkey
| | - Gizem Narli
- Department of Pathology, Binali Yildirim University Mengucek Gazi Training Hospital, Erzincan, Turkey
| | - Cumhur Yesildal
- Department of Urology, Sisli Hamidiye Etfal Training Hospital, Istanbul, Turkey
| | - Temucin Senkul
- Department of Urology, Mehmet Toprak Hospital, Istanbul, Turkey
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Yavuz O, Alcay Y, Kaya K, Sezen M, Kirlangic Atasen S, Yildirim MS, Ozkilic Y, Tuzun NŞ, Yilmaz I. Superior Sensor for Be2+ Ion Recognition via the Unprecedented Octahedral Crystal Structure of a One-Dimensional Coordination Polymer of Crown Fused Zinc Phthalocyanine. Inorg Chem 2018; 58:909-923. [DOI: 10.1021/acs.inorgchem.8b03038] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ozgur Yavuz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Yusuf Alcay
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Kerem Kaya
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Mustafa Sezen
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | | | | | - Yilmaz Ozkilic
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Nurcan Şenyurt Tuzun
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
| | - Ismail Yilmaz
- Istanbul Technical University, Department of Chemistry, 34469 Maslak, Istanbul, Turkey
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Kabatas S, Demir CS, Civelek E, Yilmaz I, Kircelli A, Yilmaz C, Akyuva Y, Karaoz E. Neuronal regeneration in injured rat spinal cord after human dental pulp derived neural crest stem cell transplantation. ACTA ACUST UNITED AC 2018. [PMID: 29536742 DOI: 10.4149/bll_2018_028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE This study aimed to analyze the effect of human Dental Pulp-Neural Crest Stem Cells (hDP-NCSCs) delivery on lesion site after spinal cord injury (SCI), and to observe the functional recovery after transplantation. METHODS Neural Crest Stem Cells (NCSCs) were isolated from human Dental Pulp (hDP). The experimental rat population was divided into four groups (n = 6/24). Their behavioral motility was scored regularly. After 4-weeks, rats were sacrificed, and their spinal cords were examined for Green Fluorescent Protein (GFP) labeled hDP-NCSCs by immunofluorescence (IF) staining. RESULTS In early post-injury (p.i) period, the ultrastructure of spinal cord tissue was preserved in Group 4. The majority of cells forming the ependymal region around the central canal were found to be hDP-NCSCs. While the grey-and-white-matter around the ependymal region was composed of e.g. GFP cells, with astrocytic-like appearance. The scores showed significant motor recovery in hind limb functions in Group 4. However, no obvious change was observed in other groups. CONCLUSION Cells e.g., mesenchymal (Vimentin+) which express GFP+ cells in the gray-and-white-matter around the ependymal region could indicate the potential to self-renewal and plasticity. Thus, transplantation of hDP-NCSCs might be an effective strategy to improve functional recovery following spinal cord trauma (Fig. 10, Ref. 32).
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Caylakli F, Yilmaz I, Alkan O. Complications of Formaldehyde Injection for a Cystic Mass of the Neck. Turk Arch Otorhinolaryngol 2018; 56:122-125. [DOI: 10.5152/tao.2018.3168] [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] [Received: 01/03/2018] [Accepted: 03/29/2018] [Indexed: 11/22/2022] Open
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