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Usta U, Taştekin E. Present and Future of Artificial Intelligence in Pathology. Balkan Med J 2024; 41:157-158. [PMID: 38700263 PMCID: PMC11077921 DOI: 10.4274/balkanmedj.galenos.2024.2024.060324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2024] Open
Affiliation(s)
- Ufuk Usta
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Türkiye
| | - Ebru Taştekin
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Türkiye
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Arıkan MG, Soyluoğlu S, Korkmaz Ü, Taştekin E, Elboğa U, Arda E. Correlation between pre-radical prostatectomy standardized SUVmax ratios detected on 68Ga-PSMA-I&T PET/CT and final histopathology outcomes: an in-depth analysis. Rev Esp Med Nucl Imagen Mol 2024; 43:100-106. [PMID: 38331250 DOI: 10.1016/j.remnie.2024.02.002] [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: 10/10/2023] [Revised: 12/27/2023] [Accepted: 01/02/2024] [Indexed: 02/10/2024]
Abstract
OBJECTIVE To evaluate the predictive potential of the maximum standardized uptake value(SUVmax) value of intraprostatic tumors derived from preoperative 68Ga-PSMA-I&T PET/CT (SUVT), and its ratios to SUVmax in the liver (SUVTLR) and parotid gland (SUVTPR) with respect to histopathological findings. MATERIALS AND METHODS Data from patients who underwent radical prostatectomy (RP) for prostate cancer (PC) at our clinic between 2017 and 2020 were assessed. Patients with a secondary malignancy, a history of transurethral prostate resection, prior treatment for PC, or who received salvage RP were excluded. Whole-body images obtained using the same device, as per the guidelines, were reviewed by two nuclear medicine specialists with more than a decade of experience to reach a consensus for each lesion. The relationships between age, PSA, Prostate Volume, clinical T stage, biopsy International Society of Urological Pathology grade (ISUP), D'amico risk group, intraprostatic tumor volume (HPTV) identified in the final histopathological specimen review, HP-ISUP grade, seminal vesicle invasion (SVI), extracapsular invasion (ECI), positive surgical margine (PSM), SUVT, SUVTLR, and SUVTPR were analyzed. RESULTS The mean age of the 64 included patients was 64.1 ± 5.3. A statistically significant correlation was found between SUVT, SUVTLR, SUVTPR values, and histopathologic stage parameters, such as biopsy ISUP, D'amico Risk Classification, HP-ISUP, HPTV (p < 0.05). PSMATV, SUVT, and SUVTLR were statistically significant predictors of extracapsular invasion, while PSA, PSMATV, and SUVTLR were significant predictors of SVI (p < 0.05). CONCLUSION The standardized SUVT, SUVTLR, and SUVTPR values could be employed as noninvasive markers to assist in predicting postoperative histopathological findings, particularly ECI, SVI, and PSM.
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Affiliation(s)
- M G Arıkan
- Hatay Dörtyol State Hospital, Urology Clinic, Hatay, Turkey.
| | - S Soyluoğlu
- Trakya University School of Medicine, Department of Nuclear Medicine, Edirne, Turkey.
| | - Ü Korkmaz
- Trakya University School of Medicine, Department of Nuclear Medicine, Edirne, Turkey.
| | - E Taştekin
- Trakya University School of Medicine, Department of Pathology, Edirne, Turkey.
| | - U Elboğa
- Gaziantep University School of Medicine, Department of Nuclear Medicine, Gaziantep, Turkey.
| | - E Arda
- Trakya University School of Medicine, Department of Urology, Edirne, Turkey.
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Gökmen İ, Taştekin E, Demir N, Özcan E, Akgül F, Hacıoğlu MB, Erdoğan B, Topaloğlu S, Çiçin İ. Molecular Pattern and Clinical Implications of KRAS/NRAS and BRAF Mutations in Colorectal Cancer. Curr Issues Mol Biol 2023; 45:7803-7812. [PMID: 37886935 PMCID: PMC10605734 DOI: 10.3390/cimb45100491] [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: 08/24/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 10/28/2023] Open
Abstract
The aim of our study was to evaluate the incidence of KRAS/NRAS and BRAF mutations, analyze molecular patterns, and investigate associations with clinical parameters of these mutations in CRC KRAS/NRAS and BRAF mutations analyzed by next-generation sequencing. The detection rates of these mutations and patients' demographics were recorded and the relationship between them was evaluated using the chi-square test. KRAS mutation was detected in 332 of 694 patients, while the mutation rates in KRAS exons 2/3 and 4 were 39.6%/3.2% and 5%, respectively. The most common mutation pattern was KRAS G12D. Five atypical variants were detected: V14I in KRAS exon 2, A18D, Q22K and T50I in exon 3, and T148P in exon 4. NRAS mutation was detected in 29 (4.5%) patients. One atypical variant L80W was detected in NRAS exon 3. BRAF mutation was seen in 37 (5.3%) patients, with BRAFV600E (83.8%) being the most common mutation pattern. NRAS mutation was significantly more frequent in patients > 64 years of age, BRAF mutation in women, and NRAS/BRAF mutations in right colon tumors. Grouping BRAF mutations into BRAFV600E and BRAFnon-V600E and their analysis according to specific tumor localizations showed that all four BRAFnon-V600E mutations originated in the rectum. In our study, KRAS exon 2 and other RAS mutation rates were higher than in the literature, while the BRAF v.600E mutation rate was similar. NRAS and BRAF mutations were significantly more frequent in the right colon. BRAF mutation was more common in women and in the right colon.
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Affiliation(s)
- İvo Gökmen
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne 22030, Turkey;
| | - Nazan Demir
- Department of Medical Oncology, Sultan I. Murat Public Hospital, Edirne 22030, Turkey;
| | - Erkan Özcan
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - Fahri Akgül
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - Muhammed Bekir Hacıoğlu
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - Bülent Erdoğan
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - Sernaz Topaloğlu
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
| | - İrfan Çiçin
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne 22030, Turkey; (E.Ö.); (F.A.); (M.B.H.); (S.T.); (İ.Ç.)
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Hereklioğlu S, Karabulut D, Özdemir G, Taştekin E, Tunçbilek N. Gastric Teratoma in an Adult Female Patient: A Case Report. Curr Med Imaging 2023; 20:CMIR-EPUB-133884. [PMID: 37602541 DOI: 10.2174/1573405620666230821142832] [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: 12/09/2022] [Revised: 06/17/2023] [Accepted: 07/07/2023] [Indexed: 08/22/2023]
Abstract
BACKGROUND Gastric teratoma (GT) occurs as a rule in infancy and is an extremely unusual gastric tumor in adult patients. CASE PRESENTATION In this paper, we present the clinical and imaging findings of a 56-year-old female patient with a GT. The patient's main symptoms were increasing abdominal discomfort and pain. After the physical examination, she underwent ultrasound (US) and computed tomography (CT), which showed a large mass at the posterior wall of the stomach, and a teratoma was initially considered. After surgery, pathology confirmed the diagnosis of GT. The patient recovered after surgery and was discharged in good health. To the best of our knowledge, this study is the first reported case of gastric teratoma in an adult woman in the literature. CONCLUSION Gastric teratoma of the adult period is a rare benign neoplasm that may have several complications; therefore, imaging is crucial for diagnosis and accurate treatment management. The aim of this study is to emphasize the value of US and CT in the diagnosis and treatment monitoring of mature gastric teratomas.
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Affiliation(s)
- Savaş Hereklioğlu
- Department of Radiology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Derya Karabulut
- Department of Radiology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Gülşah Özdemir
- Department of Radiology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Nermin Tunçbilek
- Department of Radiology, Trakya University Faculty of Medicine, Edirne, Turkey
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Erdogan EG, Yalta TD, Can N, Süt N, Taştekin E, Usta U, Puyan FÖ, Usturalı Keskin FE, Kurt BB. Clinicopathological and molecular analyses of uterine carcinosarcomas using next-generation sequencing: A single-center experience. INDIAN J PATHOL MICR 2023; 66:449-455. [PMID: 37530323 DOI: 10.4103/ijpm.ijpm_777_21] [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] [Indexed: 08/03/2023] Open
Abstract
Background Uterine carcinosarcomas (UCS) constitute 3-4% of all uterine malignancies and 16% of deaths caused due to uterine neoplasms. Aim In this study, we aimed to perform DNA-based mutation analysis in 12 genes (KRAS, NRAS, EGFR, C-KIT, BRAF, PDGFRA, ALK, ERBB2, ERBB3, ESR1, RAF1, PIK3CA) to determine the molecular subtypes of UCS using next-generation sequencing (NGS) in patients with aggressive UCS and poor prognosis. We aimed to compare the results of our analysis with clinicopathological data to contribute to the development of targeted therapy approaches related to the molecular changes of UCS. Materials and Methods In this study, we included 12 cases diagnosed with uterine carcinosarcomas and examined the changes in oncogenes that play a role in UCS pathogenesis. For the analysis of mutation, the clinicopathological data were compared with the variations in the DNA-based gene panel consisting of 12 genes and 1237 variants in the UCS using the NGS method. Results EGFR mutation was found in 91.7% of the cases, mutation in 41.7%, PDGFRA mutation in 25%, KRAS and PIK3CA mutation in 16.7%, and C-KIT mutation in 8.3% of the cases. Although no statistical significance was found between the detected mutation and clinicopathological data, it was concluded that PDGFRA mutation might be associated with advanced-stage disease development. Conclusion This study's findings regarding different molecular types of UCS and information on oncogenesis of UCS can provide inferences for targeted therapies in the future by identifying targetable mutations representing early oncogenic events and thereby contribute toward further studies on this subject.
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Affiliation(s)
- Ezgi Genc Erdogan
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne; Department of Pathology, Lüleburgaz State Hospital, Kırklareli, Turkey
| | - Tülin D Yalta
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Nuray Can
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Necdet Süt
- Department of Biostatistics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ufuk Usta
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Fulya Öz Puyan
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | | | - Busem B Kurt
- Department of Pathology, Tekirdağ State Hospital, Tekirdağ, Turkey
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Cakcak İE, Aytın YE, Sayın S, Küçükarda A, Gökyer A, Gökmen İ, Özcan E, Korkmaz S, Taştekin E, Çiçin İ. An experimental study: the effect of S. boulardii on abemaciclibinduced diarrhea. Turk J Med Sci 2023; 53:51-57. [PMID: 36945921 PMCID: PMC10388128 DOI: 10.55730/1300-0144.5557] [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: 04/07/2022] [Accepted: 07/24/2022] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND In our study, we aimed to investigate the protective effects of Saccharomyces boulardii on abemaciclib-induced diarrhea model, which is a commonly used drug in breast cancer. METHODS Thirty rats were divided into 3 groups as control (Group 1), abemaciclib (Group 2), and abemaciclib + Saccharomyces boulardii (Group 3) groups. The clinical status, body weight, and defecation status were monitored daily. At the end of the 15-day experiment period, the rats were killed with high-dose anesthesia and the resected small intestine segments were evaluated histopathologically. Lesions were classified according to thickening of the villus, inflammation and edema of mucosa and intraepithelial leukocyte accumulation. Then, mean values of both crypt depths and villi thicknesses were calculated for each rat. Normal distribution assumption was controlled with the Shapiro-Wilk test. One-way analysis of variance for normally distributed variables in the comparisons of more than two independent groups and Kruskal-Wallis test for nonnormally distributed variables were used. The significance value was accepted as 0.05. RESULTS : There was one death in Group 3, but none in the others. There were no findings of mucositis in Group I. There was mild diarrhea and weight loss in only one rat in Group 1. For the comparison of the severity of diarrhea (72.5%/39%) and weight loss (72.5%/45%), a decrease was found in Group 3 according to Group 2 (p < 0.01). Histopathological findings such as edema, inflammation, and intraepithelial leukocyte accumulation also showed a decrease in Group 3 compared to Group 2 (p < 0.01). DISCUSSION Saccharomyces boulardii should be considered as a treatment option in abaemaciclib (chemotherapy)-induced diarrhea. Further comparative studies and in vivo human randomized controlled studies can be conducted in the future.
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Affiliation(s)
- İbrahim Ethem Cakcak
- Department of General Surgery, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Yusuf Emre Aytın
- Department of General Surgery, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Sezin Sayın
- Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ahmet Küçükarda
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ali Gökyer
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - İvo Gökmen
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Erkan Özcan
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Selçuk Korkmaz
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - İrfan Çiçin
- Department of Medical Oncology, Faculty of Medicine, Trakya University, Edirne, Turkey
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Harmankaya I, Çaloğlu VY, Taştekin E, Türkkan G, Çaloğlu M, Uzal C. Prognostic importance of microvessel density, VEGF expression and perineural invasion in laryngeal cancer treated with adjuvant radiotherapy. INDIAN J PATHOL MICR 2022; 65:521-526. [PMID: 35900477 DOI: 10.4103/ijpm.ijpm_655_21] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND AND AIMS We aimed to investigate the prognostic importance of the microvessel density (MVD) value, the vascular endothelial growth factor (VEGF) expression, and the presence of perineural invasion (PNI) in laryngeal cancer (LSCC) patients. METHODS Pathological specimens of 62 LSCC patients were assessed for the evaluation of the MVD value, the VEGF expression level, and the presence of PNI of the tumors. The tumor characteristics and prognostic effects of these parameters on local control (LC) and overall survival (OS) were analyzed. STATISTICAL ANALYSIS Descriptive analyses were done using frequencies for the demographic variables. The survival estimates were calculated by the Kaplan-Meier survival curves. The effects of the parameters on LC and OS were investigated by using the log-rank test comparing the survival rates. Cox regression analysis was used for multivariable analysis. RESULTS The 5-year LC and OS rates of the 62 LSCC patients were 64.5 and 53.9%, respectively. Twenty-two patients (35.5%) had PNI and the frequency of PNI was higher in the patients with a high-grade disease (P = 0.01). The MVD value was higher in the tumors of older patients (P = 0.035) and was correlated with the VEGF expression (P = 0.009). A higher tumor grade was related to a higher VEGF expression (P = 0.01) and the increase in the VEGF expression was associated with a significant decrease in the OS (P = 0.03). CONCLUSION The VEGF expression, the MVD value, and the presence of PNI had no prognostic significance on the LC in the LSCC patients while only the VEGF expression was associated with the OS.
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Affiliation(s)
- Ilknur Harmankaya
- Department of Radiation Oncology, Basaksehir Cam and Sakura City Hospital, Istanbul, Turkey
| | - Vuslat Yürüt Çaloğlu
- Department of Radiation Oncology, Trakya University Medical Faculty, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University Medical Faculty, Edirne, Turkey
| | - Görkem Türkkan
- Department of Radiation Oncology, Istinye University Medical Faculty, Arel University Medical Faculty, Istanbul, Turkey
| | - Murat Çaloğlu
- Department of Radiation Oncology, Trakya University Medical Faculty, Edirne, Turkey
| | - Cem Uzal
- Department of Radiation Oncology, Arel University Medical Faculty, Istanbul, Turkey
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Taştekin E, Canberk Ş, Schmidt FC. Follicular Growth Pattern Disease on Thyroid Fine-needle Aspiration Biopsy. Balkan Med J 2022; 39:230-238. [PMID: 35719013 PMCID: PMC9326944 DOI: 10.4274/balkanmedj.galenos.2022.2022-5-17] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Thyroid nodules are a common worldwide health problem and a diagnostic challenge for clinicians and cytopathologists. Follicular growth pattern constitutes the majority of thyroid lesions. Thyroid nodules can be neoplastic or non-neoplastic, and neoplastic nodules can be classified as benign, malignant, or gray zone. Gray zone lesions include different benign and malignant entities that might be resulted in unnecessary thyroidectomies with risk of morbidity and higher health care costs. Depending on the cellularity, most cases might fall into the follicular neoplasia (FN)/ suspicious for FN (SFN) category or follicular lesion of undetermined significance (FLUS) in The Bethesda System for Reporting Thyroid Cytopathology (TBSRTC). Pathologists must be aware of the relationship between this diagnostic category and follow-up patient management and avoid over-diagnosing by mastering the diagnostic criteria.
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Affiliation(s)
- Ebru Taştekin
- Department of Pathology, Faculty of Medicine Trakya University, Edirne, Turkey
| | - Şule Canberk
- Pathology Instituto de Investigação e Inovação em Saúde, University of Porto, Institute of Molecular Pathology and Immunology, Porto, Portugal
| | - Fernando C Schmidt
- Pathology Instituto de Investigação e Inovação em Saúde, University of Porto, Institute of Molecular Pathology and Immunology, Porto, Portugal
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Bulut E, Taştekin E, Topuz C, Öztürk S, Gökyer A. Exceptional Variant with Distant Cutaneous Metastasis as the First Clinical Sign in Gastric Signet-Ring Carcinoma. J Gastrointest Cancer 2021; 53:1135-1137. [PMID: 34786642 DOI: 10.1007/s12029-021-00747-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2021] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Skin metastases from gastric cancer are rare and usually occur very late in the course of the disease. The most common metastatic sites liver, the peritoneal surfaces, and the non regional or distant lymph nodes. CASE REPORT In this case we report the short-term survival of a 67-year-old man complined of multiple nodular lesions in various part of his skin. Histology showed a metastatic signet ring cell adenocarsinoma. Esophagogastroduodenoscopy was performed and a crater- like ulcer, about 3 cm in diameter, was observed on the anterior part of the stomach corpus distal. A biopsy specimen was obtained, and histopathological findings were consistent with gastric signet-ring cell carcinoma. XELOX chemotherapy regimen was initiated for the patient. CONCLUSION Skin metastasis of gastric adenocarcinoma is a rare condition with a poor prognosis. It may be the first manifestation of a clinically silent visceral cancer or may represent a recurrence of an internal malignancy.
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Affiliation(s)
- Ezgi Bulut
- Trakya University School of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Canberk Topuz
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Sevgi Öztürk
- Department of Dermatology, Çanakkale 18 Mart School of Medicine, Çanakkale, Turkey
| | - Ali Gökyer
- Division of Medical Oncology, Department of Internal Medicine, Trakya University School of Medicine, Edirne, Turkey.
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Keskin EU, Taştekin E, Can N, Mut A, Celik M, Bulbul BY, Puyan FO, Ozyilmaz F, Guldiken S, Ayturk S, Sezer A, Üstün F. SURVIVIN POSITIVITY AND PROGNOSTIC FACTORS IN PAPILLARY THYROID CARCINOMAS. Acta Endocrinol (Buchar) 2021; 17:455-461. [PMID: 35747869 PMCID: PMC9206154 DOI: 10.4183/aeb.2021.455] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
CONTEXT Papillary thyroid carcinoma(PTC)s are the indolent progressive tumours. Survivin is a unique bifunctional protein with cell cycle regulation and apoptosis inhibition. The expression of this protein has been shown to be increased in thyroid tumours correlated with aggressive behavior from well differentiated to anaplastic. OBJECTIVE In this study, we aimed to investigate the relationship between immunohistochemically survivin expression and tumour-associated prognostic factors in papillary thyroid carcinomas. DESIGN In patients with thyroidectomy, we compared the clinicopathological findings and immunohistochemical positivity for survivin. SUBJECTS AND METHODS In 109 patients, sex, age, tumour size, histological tumour variant, tumour focality, tumour border pattern, tumour peripheral/intratumoural lymphocytic and stromal response, intraglandular spread, extrathyroideal spread, lymph node metastases, lymphocytic tiroiditis and relationships of these findings with survivin positivity were investigated. RESULTS When we indicated the tumour size and compared it with survivin expression, tumour size correlates with, survivin expression (p = 0.016). Survivin expression was correlated statistically significant with lymphovascular invasion, without stromal response and with intraglandular extension respectively (p<0.001, p = 0.043, p<0.001). No significant correlation was found between other clinicopathological parameters and survival. CONCLUSION Few studies have investigated the relationship of survivin expression with prognosis in thyroid papillary carcinomas and showed that survivin was a poor prognostic marker. If its expression is detected in preoperative cytology smears, it may affects the surgical treatment strategy. When it is detected in the tissue, postoperative radioactive iodine treatment plan may be modified and the need for more aggressive follow-up may be considered.
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Affiliation(s)
- E. Usturali Keskin
- Correspondence to: Elif Usturalı Keskin MD, Trakya University, Faculty of Medicine, Department of Pathology, Edirne, 22030, Turkey, E-mail:
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Gökyer A, Küçükarda A, Köstek O, Gökmen İ, Özcan E, Sayın S, Taştekin E, Hacıoğlu B, Erdoğan B, Uzunoğlu S, Çiçin İ. Comparison of real-life data from patients with NGS panel negative and KRAS mutation positive metastatic lung adenocarcinoma. Tumori 2021; 108:141-146. [PMID: 33624577 DOI: 10.1177/0300891621996448] [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] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To evaluate clinical and demographic characteristics and the results of cytotoxic treatments of KRASG12C, KRASother, and next-generation sequencing (NGS) panel negative patients. METHODS NGS data of 1264 patients with non-small cell lung cancer were retrospectively evaluated. Among these patients, the mutation distributions of 1081 patients with metastatic lung adenocarcinoma were analyzed. A total of 150 patients with negative NGS panel or mutant KRAS followed up in our clinic were included. Clinical features, overall survival, first-line chemotherapy responses, and progression-free survival of NGS panel negative, KRASG12C, and KRASother groups were compared. RESULTS In 1081 patients who underwent NGS from tumor tissue with the diagnosis of metastatic lung adenocarcinoma, 296 (27%) NGS panel negative and 276 (26%) KRAS mutant patients were detected. Among these patients, 150 patients whose data were available were 71 (47.3%) NGS panel negative, 54 (36%) KRASother, and 25 (16.7%) KRASG12C. Clinical features, brain metastasis, and first-line chemotherapy response were similar among groups. Bone metastases were detected more often in the NGS panel negative group (p = 0.03). The median follow-up was 8.4 months. Overall, 107 deaths had occurred at the time of analysis. There was no difference in overall survival (p = 0.56) or progression-free survival (p = 0.71) among NGS panel negative, KRASother, and KRASG12C patients. CONCLUSION There is no difference in overall survival, first-line chemotherapy response, or progression-free survival among patients with NGS panel negative, KRASG12C, or KRASother metastatic lung adenocarcinoma. Bone metastases were observed more frequently in the NGS panel negative group.
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Affiliation(s)
- Ali Gökyer
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Ahmet Küçükarda
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Osman Köstek
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - İvo Gökmen
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Erkan Özcan
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Sezin Sayın
- Trakya University School of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Bekir Hacıoğlu
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Bülent Erdoğan
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Sernaz Uzunoğlu
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - İrfan Çiçin
- Department of Internal Medicine, Division of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
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Akçaer V, Eren T, Taştekin E. Primary renal neuroblastoma mimicking Wilms' tumor. Balkan Med J 2020; 38:135-136. [PMID: 33233872 PMCID: PMC8909253 DOI: 10.4274/balkanmedj.galenos.2020.2020.7.204] [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] [Indexed: 12/01/2022] Open
Affiliation(s)
- Vedat Akçaer
- Department of Pediatric Surgery, Trakya University School of Medicine, Edirne, Turkey
| | - Tuba Eren
- Department of Pediatric Hematology and Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
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Üstün F, Taştekin E, Taş A, Altun GD. The Clinical Significance of Incidental Parotid Uptake in a PET/CT Study: A Diagnostic Algorithm. Curr Med Imaging 2020; 15:326-333. [PMID: 31989884 DOI: 10.2174/1573405614666171213160244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 11/28/2017] [Accepted: 12/02/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND Patients diagnosed with cancer do not have sufficient clinical data for the management of incidental parotid lesions. We aimed to reveal the importance of randomized parotid lesions encountered during oncologic F-18 fluorodeoxyglucose positron emission tomography (FDG PET/CT) imaging in our clinical practice and the diagnostic algorithm of such lesions. METHODS We performed a database search of PET/CT records generated from 2009 to 2015 for "parotid" in reports of patients who underwent PET/CT examination for a known malignancy elsewhere, or cancer screening. RESULTS Incidental parotid FDG uptake on PET/CT had a prevalence of 1.1%. The incidence of parotid metastasis in our series was 36.4%, and 75% of them had malign melanoma metastasis. Of the 11 cases, 5 were of Warthin tumours, and Warthin tumours showed stronger GLUT1 expression than metastatic parotid lesions. CONCLUSION In patients with malignancy elsewhere, focal involvement of FDG by the parotid gland, especially if malignant melanoma or SCC is absent, should not be considered a metastatic disease without histopathologic confirmation. If parotid disease would change the patient's treatment plan and disease stage, the parotid lesion should be evaluated by additional methods, such as fine needle aspiration biopsy.
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Affiliation(s)
- Funda Üstün
- Department of Nuclear Medicine, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Abdullah Taş
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Gülay Durmuş Altun
- Department of Nuclear Medicine, Faculty of Medicine, Trakya University, Edirne, Turkey
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Aydoğdu N, Yalçınkaya Yavuz Ö, Taştekin E, Tayfur P, Kaya O, Kandemir N. The Effects of Irisin on Nω-Nitro-L-arginine Methyl Ester Hydrochloride-Induced Hypertension in Rats. Balkan Med J 2019; 36:337-346. [PMID: 31486326 PMCID: PMC6835167 DOI: 10.4274/balkanmedj.galenos.2019.2019.5.113] [Citation(s) in RCA: 5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Background: The cause of about 95% of hypertension, an important public health problem, is unknown. Intensive studies are underway to understand the physiopathology of hypertension. Irisin, a newly discovered hormone, has been reported to dilate vascular smooth muscle and lower blood pressure acutely. Aims: To investigate the effects of chronic irisin treatment on blood pressure and renal functions in a hypertension model established by nitric oxide synthase inhibition by treatment with Nω-nitro-L-arginine methyl ester hydrochloride. Study Design: Animal experimentation. Methods: Male Sprague−Dawley rats were divided into four groups (n=8). Control and irisin groups received an intravenous saline injection, hypertension and hypertension + irisin (hypertension + irisin) groups received 1.5 mg/100 g Nω-nitro-L-arginine methyl ester hydrochloride. Nω-nitro-L-arginine methyl ester hydrochloride (150 mg/L) was added to the drinking water of rats in groups hypertension and hypertension + irisin for three weeks. In the second week of the experiment, irisin (50 nmol/day) was given to rats in groups irisin and hypertension + irisin, and saline was administered to rats in groups control and hypertension for two weeks through subcutaneously placed osmotic minipumps. Blood pressure was measured by the tail-cuff plethysmography method. On the twenty-first day of the experiment, 24-hour urine, blood, and both kidneys of the rats were collected. Results: The hypertension group had elevated systolic, diastolic, and mean arterial blood pressure values compared with the control group, with decreased glutathione levels in tissue and serum, but an increase in serum oxidized glutathione level (p<0.05). Histopathologically, increased tubular injury, cast formation, glomerular sclerosis, and peritubular fibrosis levels were observed (p<0.05). Irisin treatment did not cause any significant change in blood pressure, renal functions, and injury scores. However, renal nitric oxide levels significantly increased, and endothelial nitric oxide synthase immunoreactivity was determined to be reduced (p<0.05). Conclusion: Treatment with chronic irisin at a physiological dose does not reduce blood pressure in an experimental model of hypertension. In different models of experimental hypertension, the effects of irisin administration at different doses and at different periods should be thoroughly investigated.
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Affiliation(s)
- Nurettin Aydoğdu
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
| | | | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Pınar Tayfur
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
| | - Oktay Kaya
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
| | - Nihayet Kandemir
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
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Canberk S, Montezuma D, Taştekin E, Grangeia D, Demirhas MP, Akbas M, Tokat F, Ince U, Soares P, Schmitt F. “The other side of the coin”: understanding noninvasive follicular tumor with papillary-like nuclear features in unifocal and multifocal settings. Hum Pathol 2019; 86:136-142. [DOI: 10.1016/j.humpath.2018.10.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/28/2018] [Accepted: 10/04/2018] [Indexed: 12/13/2022]
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16
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Can N, Taştekin E, Deniz Yalta T, Süt N, Korkmaz S, Usta U, Öz Puyan F, Genç E, Cezik M, Binboğa Tutuğ B, Köstek O, Tozkir H. BRAF V600 Mutation Profile of Metastatic Melanoma in the Thrace Region of Turkey. Turk Patoloji Derg 2018. [PMID: 29419849 DOI: 10.5146/tjpath.2017.01421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 BRAF is the most common mutation in melanoma. The most common subtype is BRAF V600E, followed by V600K. Initially, the authors aimed to investigate whether clinicopathological features of melanoma are associated with BRAF mutations. We then aimed to present the relationships between the clinicopathological features and the mutated subtype (V600E vs V600K). MATERIAL AND METHOD 61 patients with metastatic malignant melanoma (affecting the lymph node or other distant sites) were selected. Patient data regarding age at the time of diagnosis, sex, metastatic site (lymph node, distant metastasis or both) and primary tumour site were obtained from the hospital's database. Tissue samples containing at least 30% tumour cells were isolated from the specimens of 61 patients (24 samples from primary tumours and 37 from metastatic foci) for BRAF analysis. Comparisons between the BRAF V600 mutation and clinicopathological and histopathological features were performed. RESULTS BRAF V600 mutation was detected in 34 (55.7%) patients. The subtype was BRAF V600E in 22 (64.7%) patients, BRAF V600K in 11(32.4%) patients and BRAF V600R in 1(2.9%) patient. The crucial results of the present study may be summarized as follows: i) BRAF V600 mutation was more common in older patients and tumors with BRAF V600 mutation revealed necrosis and LVI more commonly than wild-type tumors, ii) BRAF V600K mutation was more common in older patients and BRAF V600K mutated tumors exhibited ulceration more commonly than tumors with BRAF V600E mutation (close to significant). CONCLUSION The BRAF V600 mutation may have interactions with prognostic clinicoptahological features of melanoma including necrosis and lymphovascular invasion. V600K mutation may be more common than expected and may have different associations with properties of the tumor such as tumor ulceration and patient age. Investigation of the mutated subtype of the BRAF gene may therefore reveal more detailed data about the management of melanoma and may also prevent missing of candidates for BRAF inhibitor therapies.
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Affiliation(s)
- Nuray Can
- Department of Pathology, Trakya University, Faculty of Medicine, Balkan Campus, EDİRNE, TURKEY
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Can N, Taştekin E, Deniz Yalta T, Süt N, Korkmaz S, Usta U, Öz Puyan F, Genç E, Cezik M, Binboğa Tutuğ B, Köstek O, Tozkir H. BRAF V600 Mutation Profile of Metastatic Melanoma in the Thrace Region of Turkey. Turk Patoloji Derg 2018. [PMID: 29419849 DOI: 10.5146/tjpath.2018.01422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 BRAF is the most common mutation in melanoma. The most common subtype is BRAF V600E, followed by V600K. Initially, the authors aimed to investigate whether clinicopathological features of melanoma are associated with BRAF mutations. We then aimed to present the relationships between the clinicopathological features and the mutated subtype (V600E vs V600K). MATERIAL AND METHOD 61 patients with metastatic malignant melanoma (affecting the lymph node or other distant sites) were selected. Patient data regarding age at the time of diagnosis, sex, metastatic site (lymph node, distant metastasis or both) and primary tumour site were obtained from the hospital's database. Tissue samples containing at least 30% tumour cells were isolated from the specimens of 61 patients (24 samples from primary tumours and 37 from metastatic foci) for BRAF analysis. Comparisons between the BRAF V600 mutation and clinicopathological and histopathological features were performed. RESULTS BRAF V600 mutation was detected in 34 (55.7%) patients. The subtype was BRAF V600E in 22 (64.7%) patients, BRAF V600K in 11(32.4%) patients and BRAF V600R in 1(2.9%) patient. The crucial results of the present study may be summarized as follows: i) BRAF V600 mutation was more common in older patients and tumors with BRAF V600 mutation revealed necrosis and LVI more commonly than wild-type tumors, ii) BRAF V600K mutation was more common in older patients and BRAF V600K mutated tumors exhibited ulceration more commonly than tumors with BRAF V600E mutation (close to significant). CONCLUSION The BRAF V600 mutation may have interactions with prognostic clinicoptahological features of melanoma including necrosis and lymphovascular invasion. V600K mutation may be more common than expected and may have different associations with properties of the tumor such as tumor ulceration and patient age. Investigation of the mutated subtype of the BRAF gene may therefore reveal more detailed data about the management of melanoma and may also prevent missing of candidates for BRAF inhibitor therapies.
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Affiliation(s)
- Nuray Can
- Department of Pathology, Trakya University, Faculty of Medicine, Balkan Campus, EDİRNE, TURKEY
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Ege Aktas G, Taştekin E, Sarikaya A. Assessment of biological and clinical aggressiveness of invasive ductal breast cancer using baseline 18F-FDG PET/CT-derived volumetric parameters. Nucl Med Commun 2018; 39:83-93. [DOI: 10.1097/mnm.0000000000000779] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Abstract
Background: Myoglobinuric acute kidney injury is a uremic syndrome that develops due to damage of skeletal muscle. Free radicals and nitric oxide play an important role in the pathogenesis of myoglobinuric acute kidney injury. Baicalin has multiple bioactivities, including antimicrobial, anti-inflammatory and antioxidant properties and is a potent free radical scavenger. Aims: To investigate the nephroprotective mechanism of baicalin on myoglobinuric acute kidney injury. Study Design: Animal experimentation. Methods: In our study, male Sprague Dawley rats were divided into 4 groups. Control (n=8), Baicalin (n=8), myoglobinuric acute kidney injury (n=10) and myoglobinuric acute kidney injury + baicalin (n=10). The rats were deprived of water for 24 hours before receiving intramuscular injection. The control and baicalin groups were injected intramuscularly with saline (8 ml/kg), and the myoglobinuric acute kidney injury and myoglobinuric acute kidney injury + baicalin groups were given 50% glycerol 8 ml/kg. One hour later, the control and myoglobinuric acute kidney injury groups received saline intraperitoneally, and the baicalin and myoglobinuric acute kidney injury + baicalin groups were given 200 mg/kg baicalin. Twenty-four hours after the glycerol injection, urine and blood samples were taken, and the kidneys of the rats were harvested under intraperitoneally injections of anaesthesia. Results: We found that the levels of creatinine, urea, nitric oxide, alanine transaminase, aspartate aminotransferase, creatine kinase in serum samples, malondialdehyde, nitric oxide, inducible nitric oxide synthase, and endothelial nitric oxide synthase concentrations in renal tissue were increased in the myoglobinuric acute kidney injury group compared with the control group (p<0.05). The nitric oxide and glutathione levels in the kidney were significantly decreased in the myoglobinuric acute kidney injury + baicalin group compared with the myoglobinuric acute kidney injury group (p<0.05). There were no significant differences between any other parameters. Conclusion: Our results did not show any protective effect of baicalin on myoglobinuric acute kidney injury, possibly because the different effective factors in the pathogenesis of experimental myoglobinuric acute kidney injury used in this experiment deviate from other experimental models. Moreover, detailed studies are needed to clarify the effects of baicalin in different doses and treatment durations in glycerol-induced acute kidney injury model.
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Affiliation(s)
| | - Nurettin Aydoğdu
- Department of Physiology, Trakya University School of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Necdet Süt
- Department of Biostatistics, Trakya University School of Medicine, Edirne, Turkey
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Kodaz H, Taştekin E, Erdoğan B, Hacıbekiroğlu İ, Tozkır H, Gürkan H, Türkmen E, Demirkan B, Uzunoğlu S, Çiçin İ. KRAS Mutation in Small Cell Lung Carcinoma and Extrapulmonary Small Cell Cancer. Balkan Med J 2016; 33:407-10. [PMID: 27606136 DOI: 10.5152/balkanmedj.2016.150610] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 05/15/2015] [Accepted: 11/21/2015] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Lung cancer is one of the most lethal cancers. It is mainly classified into 2 groups: non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). Extrapulmonary small cell carcinomas (EPSCC) are very rare. The Ras oncogene controls most of the cellular functions in the cell. Overall, 21.6% of human cancers contain a Kirsten Ras (KRAS) mutation. SCLC and EPSCC have several similar features but their clinical course is different. AIMS We investigated the KRAS mutation status in SCLC and EPSCC. STUDY DESIGN Mutation research. METHODS Thirty-seven SCLC and 15 EPSCC patients were included in the study. The pathological diagnoses were confirmed by a second pathologist. KRAS analysis was performed in our medical genetic department. DNA isolation was performed with primary tumor tissue using the QIAamp DNA FFPE Tissue kit (Qiagen; Hilden, Germany) in all patients. The therascreen KRAS Pyro Kit 24 V1 (Qiagen; Hilden, Germany) was used for KRAS analyses. RESULTS Thirty-four (91.9%) of the SCLC patients were male, while 11 (73.3%) of the EPSCC l patients were female. SCLC was more common in males, and EPSCC in females (p=0.001). A KRAS mutation was found in 6 (16.2%) if SCLC patients. The most common mutation was Q61R (CAA>CGA). Among the 15 EPSCC patients, 2 had a KRAS mutation (13.3%). When KRAS mutant and wild type patients were compared in the SCLC group, no difference was found for overall survival (p=0.6). CONCLUSION In previous studies, the incidence of KRAS mutation in SCLC was 1-3%; however, it was 16.2% in our study. Therefore, there may be ethnic and geographical differences in the KRAS mutations of SCLC. As a result, KRAS mutation should not be excluded in SCLC.
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Affiliation(s)
- Hilmi Kodaz
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Medical Pathology, Trakya University School of Medicine, Edirne, Turkey
| | - Bülent Erdoğan
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - İlhan Hacıbekiroğlu
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Hilmi Tozkır
- Department of Medical Genetics, Trakya University School of Medicine, Edirne, Turkey
| | - Hakan Gürkan
- Department of Medical Genetics, Trakya University School of Medicine, Edirne, Turkey
| | - Esma Türkmen
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - Bora Demirkan
- Department of Medical Genetics, Trakya University School of Medicine, Edirne, Turkey
| | - Sernaz Uzunoğlu
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
| | - İrfan Çiçin
- Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
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Palabiyik O, Karaca A, Taştekin E, Yamasan BE, Tokuç B, Sipahi T, Vardar SA. The Effect of a High-Protein Diet and Exercise on Cardiac AQP7 and GLUT4 Gene Expression. Biochem Genet 2016; 54:731-45. [PMID: 27294385 DOI: 10.1007/s10528-016-9753-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 08/10/2015] [Accepted: 06/08/2016] [Indexed: 12/18/2022]
Abstract
High-protein (HP) diets are commonly consumed by athletes despite their potential health hazard, which is postulated to enforce a negative effect on bone and renal health. However, its effects on heart have not been known yet. Aquaporin-7 (AQP7) is an aquaglyceroporin that facilitates glycerol and water transport. Glycerol is an important cardiac energy production substrate, especially during exercise, in conjunction with fatty acids and glucose. Glucose transporter 4 (GLUT4) is an insulin-sensitive glucose transporter in heart. We aimed to investigate the effect of HPD on AQP7 and GLUT4 levels in the rat heart subjected to exercise. Male Sprague-Dawley rats were divided into control (n = 12), exercise (E) training (n = 10), HPD (n = 12), and HPD-E training (n = 9) groups. The HPD groups were fed a 45 % protein-containing diet 5 weeks. The HPD-E and E groups were performed the treadmill exercise during the 5-week study period. Real-time polymerase chain reaction and immunohistochemistry techniques were used to determine the gene expression and localization of AQP7 and GLUT4 in heart tissue. Results of relative gene expression were calculated by the 'Pfaffl' mathematical method using the REST program. Differences in AQP7 and GLUT4 gene expression were expressed as fold change compared to the control group. Heart weight/tibia ratio and ventricular wall thickness were evaluated as markers of cardiac hypertrophy. Further, serum glucose, glycerol, and insulin levels were also measured. AQP7 gene expression was found to be increased in the E (3.47-fold, p < 0.001), HPD (5.59-fold, p < 0.001), and HPD-E (3.87-fold, p < 0.001) groups compared to the control group. AQP7 protein expression was also increased in the HPD and HPD-E groups (p < 0.001). Additionally, cardiac mRNA expression levels of GLUT4 showed a significant increase in the E (2.16-fold, p < 0.003), HPD (7.14-fold, p < 0.001), and HPD-E (3.43-fold, p < 0.001) groups compared to the control group. GLUT4 protein expression was significantly increased in the E, HPD, and HPD-E groups compared to the control group (p = 0.024, p < 0.001, and p < 0.001, respectively). Furthermore, Serum glucose levels were significantly different between groups (p < 0.005). This difference was observed between the HPD groups and normal-protein diet groups (C and E). Serum insulin levels were higher for HPD groups compared with the normal-protein diet groups (p < 0.001), whereas no differences were observed between the exercise and sedentary groups (p = 0.111). Serum glycerol levels were significantly increased in the HPD groups compared with control and E groups (p < 0.05 and p < 0.05, respectively). Consumption of HPD supplementation caused the increased effects on AQP7 and GLUT4 expression in rat heart.
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Affiliation(s)
- Orkide Palabiyik
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey.
| | - Aziz Karaca
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Bilge Eren Yamasan
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Burcu Tokuç
- Department of Public Health, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Tammam Sipahi
- Department of Biophysics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Selma Arzu Vardar
- Department of Physiology, Faculty of Medicine, Trakya University, Edirne, Turkey
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Güler B, Özyılmaz F, Tokuç B, Can N, Taştekin E. Histopathological Features of Gastrointestinal Stromal Tumors and the Contribution of DOG1 Expression to the Diagnosis. Balkan Med J 2015; 32:388-96. [PMID: 26740899 DOI: 10.5152/balkanmedj.2015.15912] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 10/18/2014] [Accepted: 05/09/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Gastrointestinal stromal tumors (GIST) have KIT or platelet-derived growth factor receptor α (PDGFRα) mutations affecting receptor tyrosine kinase activity and do not benefit from classic treatment regimens. AIMS The aim of this study was to review the algorithm that may be followed for the diagnosis and differential diagnosis in GISTs by investigating the histomorphological parameters and expression characteristics of classical immunohistochemical antibodies used in routine tests in addition to DOG1 expression. STUDY DESIGN Diagnostic accuracy study. METHODS We reevaluated the histological and immunohistochemical parameters of 37 GISTs. The standard immunohistochemical diagnosis and differential diagnosis panel antibodies (CD117, PDGFRα, CD34, vimentin, desmin, SMA, S-100, and Ki67) were studied on the tumor sections. We also used the popular marker DOG1 antibody with accepted sensitivity for GISTs in recent years and the PDGFRα immune marker for which the benefit in routine practice is discussed. RESULTS Classification according to progressive disease risk groups of the 37 cases revealed that 54% were in the high risk, 19% in the moderate risk, 16% in the low risk, 8% in the very low risk and 8% in the no risk group. Cytological atypia, necrosis, mucosal invasion and the Ki67 index were found to be related to the progressive disease risk groups of the tumors (p<0.05). Positive immunoreaction was observed with CD117 and PDGFRα in all GISTs in the study (100%). Positivity with the DOG1 antibody was found in 33 (89%) cases. CD34 was positive in 62% (23) of the cases. CONCLUSION The CD117 antibody still plays a key role in GIST diagnosis. However, the use of DOG1 and PDGFRα antibodies combined with CD117 as sensitive markers can be beneficial.
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Affiliation(s)
- Beril Güler
- Department of Pathology, Bezmialem Vakıf University Faculty of Medicine, İstanbul, Turkey
| | - Filiz Özyılmaz
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Burcu Tokuç
- Department of Public Health, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Nuray Can
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
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İnci O, Taştekin E, Gençhellaç H, Arabacı Ö, İşler S, Atakan İH. A Case of Urachal Malacoplakia that Seems Like Urachal Cancer. Balkan Med J 2015; 32:114-7. [PMID: 25759783 DOI: 10.5152/balkanmedj.2015.15053] [Citation(s) in RCA: 3] [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: 02/14/2014] [Accepted: 11/24/2014] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Urachal masses observed in adults should be considered malignant unless they are confuted. It is very difficult to differentiate between malignant or benign lesions, including especially calcified foci and solid areas. CASE REPORT Our case was a 63-year-old male patient who was diagnosed as Behçet's Disease 26 years ago. Upon clinical examination, he was also diagnosed with adenocarcinoma of prostate. He was examined by computerized tomography to define the stage of prostatic adenocarcinoma. The existence of a hypodense multiseptated cystic lesion with irregular margins and solid areas located between anterosuperior of bladder and umbilicus was reported. Hence, the lesion was evaluated as urachal carcinoma and locally advanced prostate cancer by the urooncology council. Resection of the mass, partial cystectomy and pelvic lymphadenectomy were performed as one of the surgical approach options in urachal carcinoma. After pathological examination, the mass was diagnosed as malakoplakia and metastasis of prostate adenocarcinoma was also detected in the right obdurator lymph nodule. In the literature, case reports of urachal malakoplakia are extremely rare. It is also interesting to note the absence of specific clinical symptoms for the urachal mass and the existence of concomitant adenocarcinoma in our case. CONCLUSION Malakoplakia can only be diagnosed by pathological examination. Particularly, urachal malakoplakia should also be taken into consideration in the differential diagnosis of lesions which include solid areas and are located in the urachus.
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Affiliation(s)
- Osman İnci
- Department of Urology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Hakan Gençhellaç
- Department of Radiology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Özcan Arabacı
- Department of Urology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Serap İşler
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
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Tekataş A, Gemici Yİ, Tuncel SA, Çağlı B, Taştekin E, Ünlü E, Çelik Y. A Rare Cause of Headache and Increased Intracranial Pressure: Primary Leptomeningeal Melanomatosis. tnd 2014. [DOI: 10.4274/tnd.26122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Aksu V, Yüksel V, Chousein S, Taştekin E, İşcan Ş, Sağiroğlu G, Canbaz S, Sunar H. The effects of sildenafil and n-acetylcysteine on ischemia and reperfusion injury in gastrocnemius muscle and femoral artery endothelium. Vascular 2014; 23:21-30. [DOI: 10.1177/1708538114527939] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Purpose We aimed to examine the effects of sildenafil and n-acetylcystein on ischemia/reperfusion injury in femoral artery endothelium and gastrocnemius muscle. Basic methods 32 rats of Sprague-Dawley breed were randomly divided into four groups (n = 8). Median laparotomy was performed, then a 120-minute ischemia was created by microvascular clamping of infrarenal aorta, followed by the release of clamping. In sildenafil group, 1 mg/kg of sildenafil infusion and in the n-acetylcystein group, 100 mg/kg of n-acetylcystein infusion was administered after release of clamps. Blood samples and tissue samples of femoral artery and gastrocnemius muscle were extracted for a histopathological evaluation. Principal findings Serum levels of malondialdehyde in ischemia/reperfusion group (6.16 ± 0.79) were higher compared to the control group (4.69 ± 0.33), whereas a significant decrease was detected in sildenafil (5.17 ± 0.50) and n-acetylcystein (4.96 ± 0.49) groups. Femoral artery tissue sections of the control group, mean tumor necrosis factor alpha and hypoxy-induced factor-1 alpha immunoreactivity were found to be negative. In the ischemia/reperfusion group, mean tumor necrosis factor α immunoreactivity was intense and mean hypoxy-induced factor-1 alpha immunoreactivity was 51–75%. In the ischemia/reperfusion + Sildenafil and ischemia/reperfusion + NAS groups, mean tumor necrosis factor α immunoreactivity was slight and mean hypoxy-induced factor-1 alpha immunoreactivity was 26–50%. Conclusions In conclusion, sildenafil and n-acetylcystein may reduce femoral artery endothelium and gastrocnemius muscle injury following lower extremity ischemia/reperfusion.
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Affiliation(s)
- Volkan Aksu
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
| | - Volkan Yüksel
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
| | - Serchat Chousein
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
| | - Ebru Taştekin
- Pathology Department, Trakya University, Edirne, Turkey
| | - Şahin İşcan
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
| | - Gönül Sağiroğlu
- Anesthesiology Department, Trakya University, Edirne, Turkey
| | - Suat Canbaz
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
| | - Hasan Sunar
- Cardiovascular Surgery Department, Trakya University, Edirne, Turkey
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Sivri N, Yalta T, Sayın C, Yalta K, Ozpuyan F, Taştekin E, Yetkin E. Evaluation of cardiovascular risk factors in women with uterine leimyoma: is there a link with atherosclerosis? Balkan Med J 2012; 29:320-3. [PMID: 25207023 DOI: 10.5152/balkanmedj.2012.002] [Citation(s) in RCA: 3] [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: 09/06/2011] [Accepted: 02/11/2012] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Both uterine leimyoma (UL) and cardiovascular disease are public health problems affecting women at different age ranges. Smoking, obesity, and hypertension have been shown to be associated with UL in different random studies. However cardiovascular risk factors have not been evaluated systematically in patients with UL. Accordingly, we aimed to evaluate the cardiovascular risk factors and their relation with the presence of UL. MATERIAL AND METHODS One hundred and eighty nine patients with the pathological diagnosis of UL and one hundred and eighty nine age matched control subjects without UL were retrospectively included in the study from our data base of the pathology and gynecology departments. Controls were patients with intact uteri who had visited the same physicians for a routine checkup that included a pelvic examination and uterine sonogram and without mention of physical findings consistent with UL. The following clinical and demographic parameters were recorded; age, sex, hypertension, diabetes mellitus, and hypercholesterolemia. Current cigarette smoking was defined as active smoking within the past 12 months. RESULTS Comparison of cardiovascular risk factors between with and without UL revealed that the presence of hypertension (80 (42.3%) vs 53 (28%) p=0.004) diabetes mellitus (33 (17.4%) vs. 16 (8.4%) p=0.009), smoking (31 (16.4%) vs. 11 (5.8%) p=0.001), were significantly higher in patients with UL than in control subjects. The mean-age and presence of hyperlipidemia were comparable between the two groups. Logistic regression analysis revealed an independent and positive association of UL with the presence of hypertension (odds ratio 2.02 CI: 1.25-3.27 p=0.004), diabetes mellitus (odds ratio 2.43 CI: 1.23-4.79 p=0.010), and smoking status (odds ratio 3.46 CI: 1.65-7.22 p=0.001). CONCLUSION We have shown that major cardiovascular risk factors namely, hypertension, diabetes mellitus and smoking are significantly and independently associated with UL. Our findings highlight the possible association of UL with atherosclerosis.
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Affiliation(s)
- Nasir Sivri
- Department of Cardiology, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Tülin Yalta
- Department of Pathology, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Cenk Sayın
- Department of Gynecology and Obstetrics, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Kenan Yalta
- Department of Cardiology, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Fulya Ozpuyan
- Department of Pathology, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Ebru Taştekin
- Department of Pathology, Faculty of Medicine, Trakya Univeristy, Edirne, Turkey
| | - Ertan Yetkin
- Department of Cardiology, IMC Hospital, Mersin Turkey
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Abstract
Cervicovaginal smear screening is well known to reduce morbidity and mortality rates of invasive cervical carcinoma. Herein, we report a case of 56-year-old woman whose cervicovaginal smear was found to consist of malignant cells characterized by high nuclear/cytoplasmic ratio, scant rim of cytoplasm, coarsely granular nuclear chromatin and irregular nuclear membrane that were all reminiscent of a malignant lymphoma. Histopathological examination of the hysterectomy and unilateral adnexectomy specimen confirmed the presence of a diffuse large B-cell non Hodgkin's lymphoma involving the cervix, endometrium, myometrium, serosa and the right ovary.
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Affiliation(s)
- Tulin Yalta
- Department of Pathology, Trakya University, Edirne, Turkey
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Inal HA, Kaplan PB, Usta U, Taştekin E, Aybatli A, Tokuc B. Neuromuscular morphometry of the vaginal wall in women with anterior vaginal wall prolapse. Neurourol Urodyn 2010; 29:458-63. [PMID: 19714736 DOI: 10.1002/nau.20779] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION AND HYPOTHESIS The aim of this study was to compare the changes in hystomorphometry and innervation of the anterior vaginal wall in women with and without anterior vaginal wall prolapse. METHODS Eighty-nine biopsy specimens were obtained from the anterior vaginal wall of women having a cystocele repaired (stage >or=II; prolapse group, 49) and the same location in patients with no prolapse (stage <II; control group, 40). Routine H&E staining and immunohistochemical staining for protein gene product 9.5 (PGP-9.5) and smooth muscle alpha-actin (SMA) were performed for all specimens. RESULTS Number and diameter of the submucosal nerve fibers were significantly lower, submucosal distance to muscular region was significantly higher in the vaginal wall of patients with cystocele than in women with normal vaginal support. We found that there was a negative correlation between the vaginal delivery and the nerve number and diameter measurements, and positive correlation between the vaginal delivery and submucosal distance of muscular level. CONCLUSIONS Results indicate that women with a cystocele have a significantly lower total innervation and higher muscular distance of the anterior vaginal epithelium than the control subjects.
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Affiliation(s)
- Hasan Ali Inal
- Department of Obstetric & Gynecology, Trakya University Medical Faculty, Edirne, Turkey
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