41 results on '"Oznur M"'
Search Results
2. Global impact of the COVID-19 pandemic on cytopathology practice: Results from an international survey of laboratories in 23 countries
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Vigliar, E., Cepurnaite, R., Alcaraz-Mateos, E., Ali, S.Z., Baloch, Z.W., Bellevicine, C., Bongiovanni, M., Botsun, P., Bruzzese, D., Bubendorf, L., Büttner, R., Canberk, S., Capitanio, A., Casadio, C., Cazacu, E., Cochand-Priollet, B., D’Amuri, A., Eloy, C., Engels, M., Fadda, G., Fontanini, G., Fulciniti, F., Hofman, P. (Pieter), Iaccarino, A., Ieni, A., Jiang, X.S., Kakudo, K., Kern, I., Kholova, I., Liu, C., Lobo, A., Lozano, M.D., Malapelle, U., Maleki, Z., Michelow, P., Musayev, J., Özgün, G., Oznur, M., Peiró Marqués, F.M., Pisapia, P., Poller, D., Pyzlak, M., Robinson, B., Rossi, E.D., Roy-Chowdhuri, S., Saieg, M., Savic Prince, S., Schmitt, F.C., Javier Seguí Iváñez, F., Štoos-Veić, T., Sulaieva, O., Sweeney, B.J., Tuccari, G., van Velthuysen, M.L., VanderLaan, P.A., Vielh, P., Viola, P., Voorham, R., Weynand, B., Zeppa, P., Faquin, W.C., Pitman, M.B., Troncone, G., Vigliar, E., Cepurnaite, R., Alcaraz-Mateos, E., Ali, S.Z., Baloch, Z.W., Bellevicine, C., Bongiovanni, M., Botsun, P., Bruzzese, D., Bubendorf, L., Büttner, R., Canberk, S., Capitanio, A., Casadio, C., Cazacu, E., Cochand-Priollet, B., D’Amuri, A., Eloy, C., Engels, M., Fadda, G., Fontanini, G., Fulciniti, F., Hofman, P. (Pieter), Iaccarino, A., Ieni, A., Jiang, X.S., Kakudo, K., Kern, I., Kholova, I., Liu, C., Lobo, A., Lozano, M.D., Malapelle, U., Maleki, Z., Michelow, P., Musayev, J., Özgün, G., Oznur, M., Peiró Marqués, F.M., Pisapia, P., Poller, D., Pyzlak, M., Robinson, B., Rossi, E.D., Roy-Chowdhuri, S., Saieg, M., Savic Prince, S., Schmitt, F.C., Javier Seguí Iváñez, F., Štoos-Veić, T., Sulaieva, O., Sweeney, B.J., Tuccari, G., van Velthuysen, M.L., VanderLaan, P.A., Vielh, P., Viola, P., Voorham, R., Weynand, B., Zeppa, P., Faquin, W.C., Pitman, M.B., and Troncone, G.
- Abstract
BACKGROUND: To the authors’ knowledge, the impact of the coronavirus disease 2019 (COVID-19) pandemic on cytopathology practices worldwide has not been investigated formally. In the current study, data from 41 respondents from 23 countries were reported. METHODS: Data regarding the activity of each cytopathology laboratory during 4 weeks of COVID-19 lockdown were collected and compared with those obtained during the corresponding period in 2019. The overall number and percentage of exfoliative and fine-needle aspiration cytology samples from each anatomic site were recorded. Differences in the malignancy and suspicious rates between the 2 periods were analyzed using a meta-analytical approach. RESULTS: Overall, the sample volume was lower compared with 2019 (104,319 samples vs 190,225 samples), with an average volume reduction of 45.3% (range, 0.1%-98.0%). The percentage of samples from the cervicovaginal tract, thyroid, and anorectal region was significantly reduced (P < .05). Conversely, the percentage of samples from the urinary tract, serous cavities, breast, lymph nodes, respiratory tract, salivary glands, central nervous system, gastrointestinal tract, pancreas, liver, and biliary tract increased (P < .05). An overall increase of 5.56% (95% CI, 3.77%- 7.35%) in the malignancy rate in nongynecological samples during the COVID-19 pandemic was observed. When the suspicious category was included, the overall increase was 6.95% (95% CI, 4.63%-9.27%). CONCLUSIONS: The COVID-19 pandemic resulted in a drastic reduction in the total number of cytology specimens regardless of anatomic site or specimen type. The rate of malignancy increased, reflecting the prioritization of patients with cancer who were considered to be at high risk. Prospective monitoring of the effect of delays in access to health services during the lockdown period is warranted.
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- 2020
- Full Text
- View/download PDF
3. Global impact of the COVID-19 pandemic on cytopathology practice: Results from an international survey of laboratories in 23 countries
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Vigliar, E, Cepurnaite, R, Alcaraz-Mateos, E, Ali, SZ, Baloch, ZW, Bellevicine, C, Bongiovanni, M, Botsun, P, Bruzzese, D, Bubendorf, L, Büttner, R, Canberk, S, Capitanio, A, Casadio, C, Cazacu, E, Cochand-Priollet, B, D’Amuri, A, Eloy, C, Engels, M, Fadda, G, Fontanini, G, Fulciniti, F, Hofman, P, Iaccarino, A, Ieni, A, Jiang, XS, Kakudo, K, Kern, I, Kholova, I, Liu, Chang, Lobo, A, Lozano, MD, Malapelle, U, Maleki, Z, Michelow, P, Musayev, J, Özgün, G, Oznur, M, Peiró Marqués, FM, Pisapia, P, Poller, D, Pyzlak, M, Robinson, B, Rossi, ED, Roy-Chowdhuri, S, Saieg, M, Savic Prince, S, Schmitt, FC, Javier Seguí Iváñez, F, Štoos-Vei?, T, Sulaieva, O, Sweeney, BJ, Tuccari, G, van Velthuysen, MLF (M. Loes), VanderLaan, PA, Vielh, P, Viola, P, Voorham, R, Weynand, B, Zeppa, P, Faquin, WC, Pitman, MB, Troncone, G, Vigliar, E, Cepurnaite, R, Alcaraz-Mateos, E, Ali, SZ, Baloch, ZW, Bellevicine, C, Bongiovanni, M, Botsun, P, Bruzzese, D, Bubendorf, L, Büttner, R, Canberk, S, Capitanio, A, Casadio, C, Cazacu, E, Cochand-Priollet, B, D’Amuri, A, Eloy, C, Engels, M, Fadda, G, Fontanini, G, Fulciniti, F, Hofman, P, Iaccarino, A, Ieni, A, Jiang, XS, Kakudo, K, Kern, I, Kholova, I, Liu, Chang, Lobo, A, Lozano, MD, Malapelle, U, Maleki, Z, Michelow, P, Musayev, J, Özgün, G, Oznur, M, Peiró Marqués, FM, Pisapia, P, Poller, D, Pyzlak, M, Robinson, B, Rossi, ED, Roy-Chowdhuri, S, Saieg, M, Savic Prince, S, Schmitt, FC, Javier Seguí Iváñez, F, Štoos-Vei?, T, Sulaieva, O, Sweeney, BJ, Tuccari, G, van Velthuysen, MLF (M. Loes), VanderLaan, PA, Vielh, P, Viola, P, Voorham, R, Weynand, B, Zeppa, P, Faquin, WC, Pitman, MB, and Troncone, G
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- 2020
4. In vitro culture of tumor infiltrating lymphocytes for adoptive immunotherapy in breast cancer patients
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Seber, S., primary, Yetisyigit, T., additional, Turgut, B., additional, Bulus, S., additional, Ozkan Gürdal, S., additional, and Oznur, M., additional
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- 2018
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5. Ascaris lumbricoides presenting as an omental mass
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Ozyalvacli, G., Kucukbayrak, A., Uzuner, E., Ayaz, E., Oznur, M., BAİBÜ, Tıp Fakültesi, Cerrahi Tıp Bilimleri Bölümü, Özyalvaçlı, Gülzade, Küçükbayrak, Abdülkadir, and Ayaz, Erol
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Ascariasis ,Pregnancy ,Omentum - Abstract
WOS:000364114900037 Introduction: Ascaris lumbricoides (AL), is an intestinal Parasite with various clinical presentations. It is common in underdeveloped rural areas both in Turkey and in the rest of the World; Ectopic localizations of AL are rare, and there only a few reported cases of mental localization. Case: We present a rare case in which an omental and a paratubal mass were detected during cesarean section in an asymptomatic pregnant patient. The histopathological examination revealed a granulomatous reaction and AL eggs inside the masses. Discussion: Infection With AL causes various intestinal complications like acute appendicitis, volvulus, invagination, intestinal perforation and gramdotnatous peritonitis. Conclusion: It should be kept in mind that granulomatous lesions presenting as mental masses may be randomly detected in asymptomatic individuals and pregnant woman infected with AL.
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- 2014
6. 958: Effect of Survivin gene −1547 A>G (rs3764383) polymorphism in Turkish breast cancer patients
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Acar, M., primary, Sahin, H., additional, Oznur, M., additional, Bender, O., additional, Surgit, O., additional, Gunduz, E., additional, and Gunduz, M., additional
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- 2014
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7. 288: Effect of boric acid on head and neck cancer cell lines
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Gunduz, M., primary, Acar, M., additional, Fakioglu, K., additional, Dogan, B., additional, Oznur, M., additional, and Gunduz, E., additional
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- 2014
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8. The first case of Henoch-Schonlein purpura associated with rosuvastatin: colonic involvement coexisting with small intestine
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Gonen, K. A., primary, Erfan, G., additional, Oznur, M., additional, and Erdogan, C., additional
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- 2014
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9. Lymphangioma: surrounding the ovarian vein and ovary
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Gonen, K. A., primary, Abali, R., additional, Oznur, M., additional, and Erdogan, C., additional
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- 2013
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10. Alveolar distraction osteogenesis applications in cleft lip and palate patients: a literature review
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Öznur Mülayim, Fatma Deniz Uzuner, and Belma Işık Aslan
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Cleft lip ,cleft palate ,distraction osteogenesis ,orthodontics ,Dentistry ,RK1-715 - Abstract
Distraction osteogenesis technique has been successfully applied in the craniofacial area for long time, and it is being applied increasingly more in cleft lip and palate patients also. Especially in large cleft palate cases, bone grafting or surgical procedures such as distraction osteogenesis can be applied in order to ensure a smooth alveolar arc. In this literature review, alveolar (segmental) distraction osteogenesis applications in patients with cleft lip and palate, indications of the technique, advantages and disadvantages, application methods and types of appliances used for this purpose have been evaluated. As conclusion, especially with the application of alveolar (segmental) distraction osteogenesis, successful outcome can be achieved in cleft lip and palate patients with velopharyngeal insufficiency, maxillary hypoplasia and maxillary crowding, and this technique may be an alternative to conventional osteotomies and extraoral distractions.
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- 2016
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11. THE MOST APPLICABLE SAMPLE OF PROTECTIONISM: EXPORT-ORIENTED INDUSTRIALIZATION
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Pinar ERYIGIT, Serkan CURA, and Öznur MERT
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Industrialization ,Growth Model ,Protectionism ,Economic theory. Demography ,HB1-3840 ,Economics as a science ,HB71-74 - Abstract
A developing country may have two different paths aimed at industrialization policies according to it’s foreign trade perspective. The first one is import substitution industrialization based on protectionism and the second one is the policy of export-oriented industrialization aimed at integration in the international economy. Export-oriented industrialization is a strategy related to the world for connecting local economy to global economy. At the same time, countries that have to shape their allocation of resources according to foreign demand are compulsory to be open for international trade. The reason is that this strategy reaches to success if developed countries open their markets to developing or less developed countries. Whereas, it’s clearly known that developed countries open their market to other develop countries. But in Turkey, when the import substitution industrialization policies that has been applied since 1963 started to be inadequate, export-oriented industrialization policy was adopted with the decision taken within the framework of the Stabilization Program on January 24th 1980 and while the significant increases were performed in Turkey’s export volume as a result of positive developments created by these policies, the composition of export products has changed. The best evidence of this change is incredible progress that is seen in export item of manufacturing industry which is one of the most important industrial sectors in the economic structure.
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- 2014
12. The role of adipocytokines in colon cancer and adenomas
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Tulubas Feti, Mete Rafet, Oznur Meltem, and Topcu Birol
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adiponectin ,apelin ,visfatin ,colon adenoma ,colon cancer ,Biochemistry ,QD415-436 - Abstract
Background: Metabolic changes resulting from obesity, insulin insensitivity, and imbalances in hormones such as adiponectin, leptin, resistin, apelin and visfatin, which are derived from white adipose tissue-derived hormone, are directly linked to both colon cancer (CC) and inflammatory bowel diseases increasing tissue-derived risk. We conducted this study to evaluate the relationship between the circulating concentrations of adiponectin, leptin, resistin, apelin and visfatin and colon adenoma and CC. Methods: Our study included 90 participants aged >18 years who were divided into three groups: colon cancer, adenoma and control. The serum concentrations of the investigated adipohormones were measured with ELISA in 30 patients with colon adenoma, 30 with CC and 30 controls with no colon pathology. Results: Demographic, anthropometric, metabolic and hormonal parameters were also recorded. The group means were compared by using one-way analysis of variance (ANOVA). Dual comparisons between groups were analyzed with the Tukey test. Pearson correlation coefficient was used to determine the relation between continuous variables. Adiponectin and leptin levels in patients with adenomas (p
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- 2014
13. Production of long bunch trains with 4.5 μC total charge using a photoinjector
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Oznur Mete, Eric Chevallay, Marta Csatari, Anne Dabrowski, Steffen Doebert, Daniel Egger, Valentine Fedosseev, Maja Olvegaard, and Massimo Petrarca
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Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
A photoinjector, PHIN (PHotoINjector), has been realized at CERN by a joint effort of several institutes within the European Coordinated Accelerator Research in Europe program. The test facility has been installed and commissioned at CERN with the aim to demonstrate the beam parameters needed for the CLIC Test Facility 3 (CTF3). This beam is unique with respect to its long bunch train and high average charge per bunch requirements. The nominal beam for CTF3 consists of 1908 bunches each having a 2.33 nC charge and a bunch frequency of 1.5 GHz. Thus, a total charge of ∼4.4 μC has to be extracted and accelerated. The stability of the intensity and the beam parameters along this exceptionally high average current train is crucial for the correct functioning of the CLIC drive beam scheme. Consequently, extensive time-resolved measurements of the transverse and longitudinal beam parameters have been developed, optimized, and performed. The shot-to-shot intensity stability has been studied in detail for the electron and the laser beams, simultaneously. The PHIN photoinjector has been commissioned between 2008 and 2010 during intermittent operations. This paper reports on the obtained results in order to demonstrate the feasibility and the stability of the required beam parameters.
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- 2012
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14. Giant cell tumor-like lesion of the urinary bladder: a report of two cases and literature review; giant cell tumor or undifferentiated carcinoma?
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Oznur Meltem, Huq Gülben, Aydın Övgü, Canberk Şule, Durak Haydar, Behzatoğlu Kemal, Özyalvaçlı Gül, and Yıldız Pelin
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Pathology ,RB1-214 - Abstract
Summary Giant cell tumor, excluding its prototype in bone, is usually a benign but local aggressive neoplasm originating from tendon sheath or soft tissue. Malignant behavior is uncommon. Visceral organ involvement including urinary bladder is rare. Giant cell tumors in visceral organs usually accompany epithelial tumors and the clinical behavior of giant cell tumor in urinary bladder is similar to its bone counterpart. Here, we report two cases of giant cell tumor located in urinary bladder in comparison with nine reported cases in the English literature. Concurrent noninvasive urothelial carcinoma was also described in all these previous reports and only one patient with follow-up died of disease. One of the two cases we present had no concurrent urothelial tumor at the time of diagnosis but had a history of a low grade noninvasive urothelial carcinoma with three recurrences. The histology of these two cases was similar to the giant cell tumor of bone and composed of oval to spindle mononuclear cells with evenly spaced osteoclast-like giant cells. Immunohistochemically, the giant cells showed staining with osteoclastic markers including CD68, TRAP, and LCA. Immunohistochemical expression of vimentin, CD68, LCA, and smooth muscle actin in mononuclear cells supported a mesenchymal origin with histiocytic lineage. The histologic and immunohistochemical properties in our cases as well as their clinical courses were consistent with a giant cell tumor. Consequently, tumors in urinary bladder showing features of giant cell tumor of bone may also be considered and termed "giant cell tumor".
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- 2009
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15. Global impact of the COVID‐19 pandemic on cytopathology practice: Results from an international survey of laboratories in 23 countries
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Pio Zeppa, Gonca Özgün, Eugeniu Cazacu, Franco Fulciniti, Alessandro D’Amuri, Izidor Kern, Philippe Vielh, Reinhard Büttner, Jamal Musayev, Meltem Öznur, Chiara Casadio, Brenda Sweeney, Marianne Engels, Tajana Štoos-Veić, William C. Faquin, Eduardo Alcaraz-Mateos, Birgit Weynand, Esther Diana Rossi, Béatrix Cochand-Priollet, Claudio Bellevicine, Zubair W. Baloch, Betsy Robinson, Paul A. VanderLaan, Fernando Schmitt, Anandi Lobo, Martha B. Pitman, Kennichi Kakudo, Antonio Ieni, Rima Cepurnaite, Sule Canberk, David N. Poller, Arrigo Capitanio, Marie Louise F. van Velthuysen, Dario Bruzzese, Giancarlo Troncone, Francisco Javier Seguí Iváñez, Pamela Michelow, Ivana Kholová, Pasquale Pisapia, Rinus Voorham, Michal Pyzlak, Lukas Bubendorf, Gabriella Fontanini, Umberto Malapelle, Guido Fadda, Pavlina Botsun, Oksana Sulaieva, Sinchita Roy-Chowdhuri, Catarina Eloy, Francisca Maria Peiró Marqués, Antonino Iaccarino, Chinhua Liu, Giovanni Tuccari, Mauro Saieg, Xiaoyin Sara Jiang, Elena Vigliar, Syed Z. Ali, Zahra Maleki, Maria D. Lozano, Massimo Bongiovanni, Patrizia Viola, Paul Hofman, Spasenija Savic Prince, Vigliar, E., Cepurnaite, R., Alcaraz-Mateos, E., Ali, S. Z., Baloch, Z. W., Bellevicine, C., Bongiovanni, M., Botsun, P., Bruzzese, D., Bubendorf, L., Buttner, R., Canberk, S., Capitanio, A., Casadio, C., Cazacu, E., Cochand-Priollet, B., D'Amuri, A., Eloy, C., Engels, M., Fadda, G., Fontanini, G., Fulciniti, F., Hofman, P., Iaccarino, A., Ieni, A., Jiang, X. S., Kakudo, K., Kern, I., Kholova, I., Liu, C., Lobo, A., Lozano, M. D., Malapelle, U., Maleki, Z., Michelow, P., Musayev, J., Ozgun, G., Oznur, M., Peiro Marques, F. M., Pisapia, P., Poller, D., Pyzlak, M., Robinson, B., Rossi, E. D., Roy-Chowdhuri, S., Saieg, M., Savic Prince, S., Schmitt, F. C., Javier Segui Ivanez, F., Stoos-Veic, T., Sulaieva, O., Sweeney, B. J., Tuccari, G., van Velthuysen, M. -L., Vanderlaan, P. A., Vielh, P., Viola, P., Voorham, R., Weynand, B., Zeppa, P., Faquin, W. C., Pitman, M. B., Troncone, G., Erasmus MC other, and Pathology
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Cancer Research ,Biopsy ,neoplasms ,0302 clinical medicine ,Surveys and Questionnaires ,Cytology ,Pathology ,Surveys and Questionnaire ,coronavirus disease 2019 (COVID‐ ,malignancy rate ,Societies, Medical ,Gastrointestinal tract ,Pathology, Clinical ,medicine.diagnostic_test ,stopnja malignosti ,udc:616 ,Serous fluid ,citopatologija ,Fine-needle aspiration ,Oncology ,Biliary tract ,030220 oncology & carcinogenesis ,coronavirus disease 2019 (COVID-19) ,Life Sciences & Biomedicine ,Human ,medicine.medical_specialty ,fine‐ ,Urinary system ,Biopsy, Fine-Needle ,030209 endocrinology & metabolism ,Workload ,Malignancy ,cytopathology ,fine-needle aspiration ,needle aspiration ,COVID-19 ,Communicable Disease Control ,Humans ,Laboratories, Hospital ,SARS-CoV-2 ,Hospital ,Clinical ,coronavirus disease 2019 ,03 medical and health sciences ,novotvorbe ,Medical ,Internal medicine ,medicine ,coronavirus disease 2019 (COVID-19), cytopathology, fine-needle aspiration, malignancy rate ,tankoigelna biopsija ,Science & Technology ,koronavirusna bolezen ,business.industry ,medicine.disease ,patologija ,Cytopathology ,Fine-Needle ,pathology ,Laboratories ,Societies ,19) ,business - Abstract
BACKGROUND: To the authors' knowledge, the impact of the coronavirus disease 2019 (COVID-19) pandemic on cytopathology practices worldwide has not been investigated formally. In the current study, data from 41 respondents from 23 countries were reported. METHODS: Data regarding the activity of each cytopathology laboratory during 4 weeks of COVID-19 lockdown were collected and compared with those obtained during the corresponding period in 2019. The overall number and percentage of exfoliative and fine-needle aspiration cytology samples from each anatomic site were recorded. Differences in the malignancy and suspicious rates between the 2 periods were analyzed using a meta-analytical approach. RESULTS: Overall, the sample volume was lower compared with 2019 (104,319 samples vs 190,225 samples), with an average volume reduction of 45.3% (range, 0.1%-98.0%). The percentage of samples from the cervicovaginal tract, thyroid, and anorectal region was significantly reduced (P < .05). Conversely, the percentage of samples from the urinary tract, serous cavities, breast, lymph nodes, respiratory tract, salivary glands, central nervous system, gastrointestinal tract, pancreas, liver, and biliary tract increased (P < .05). An overall increase of 5.56% (95% CI, 3.77%-7.35%) in the malignancy rate in nongynecological samples during the COVID-19 pandemic was observed. When the suspicious category was included, the overall increase was 6.95% (95% CI, 4.63%-9.27%). CONCLUSIONS: The COVID-19 pandemic resulted in a drastic reduction in the total number of cytology specimens regardless of anatomic site or specimen type. The rate of malignancy increased, reflecting the prioritization of patients with cancer who were considered to be at high risk. Prospective monitoring of the effect of delays in access to health services during the lockdown period is warranted. ispartof: CANCER CYTOPATHOLOGY vol:128 issue:12 pages:885-894 ispartof: location:United States status: published
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- 2020
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16. Association between Pityriasis Rosea (PR) and HHV-6/HHV-7 Infection: Importance of Sample Selection and Diagnostic Techniques.
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Aydin Kurc M, Erfan G, Kaya AD, Gülen D, Oznur M, and Yanik ME
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Recent studies have focused on the role of human herpesvirus 6 (HHV-6) and human herpesvirus 7 (HHV-7) in PR etiology with varying results. In our study, with the approach that the discrepancy between the results may be related to the different samples and techniques used, we aimed to clarify the etiology by examining tissue and plasma samples using molecular methods and evaluating the results together with serological parameters. Skin biopsies and plasma samples of twenty-five PR patients were tested to detect HHV-6 and HHV-7 DNA using calibrated quantitative real-time polymerase chain reaction (CQ RT-PCR). IgG and IgM antibodies against HHV-6 and HHV-7 were tested by enzyme-linked immunosorbent assay and indirect immunofluorescence. Of the patient group, 64% were positive for HHV-6 IgG without IgM positivity. HHV-6 DNA was present in seven tissue and ten plasma samples. HHV-7 positivity was 100% and 12% for IgG and IgM antibodies, respectively. HHV-7 DNA was detected in four tissue samples and one plasma sample. Patients with HHV-7 DNA-positive plasma and tissue samples had also HHV-7 IgM antibodies. In conclusion, our results seem to support the role of HHV-6/HHV-7 in the etiology of PR. To clarify the etiology of PR and avoid confusion, the collection of different biological materials simultaneously and the usage of CQ RT-PCR as a diagnostic technique are recommended.
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- 2024
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17. Efficacy of Neoadjuvant Chemotherapy in Lobular and Rare Subtypes of Breast Cancer.
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Seber ES, Iriagac Y, Cavdar E, Karaboyun K, Avci O, Yolcu A, Gurdal SO, Oznur M, Ekinci F, Aytac A, Gulturk I, Yilmaz M, Sever N, Kapagan T, Ferhatoglu F, Kahvecioglu FA, and Hacibekiroglu I
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- Humans, Female, Ki-67 Antigen, Neoadjuvant Therapy, Retrospective Studies, Pathologic Complete Response, Breast Neoplasms drug therapy, Carcinoma, Lobular drug therapy, Carcinoma, Signet Ring Cell, Adenocarcinoma, Mucinous
- Abstract
Objective: To determine the predictive factors for the pathological complete response (pCR) in patients with non-ductal invasive breast cancer (ND-BC) receiving neoadjuvant chemotherapy., Study Design: Observational study. Place and Duration of the Study: Departments of Medical Oncology, Tekirdag Namik Kemal University, Sirnak State Hospital, Aydin Adnan Menderes University, Marmara University, Bakirkoy Sadi Konuk Hospital, Basaksehir Cam and Sakura Hospital, Sakarya University, Balıkesir Ataturk Hospital, Turkiye, from April 2016 to December 2022., Methodology: A total of 222 non-metastatic breast cancer patients who received neoadjuvant chemotherapy were included in this retrospective multicentric study. The clinicopathologic data were obtained from the hospitals' electronic-record-system. The logistic regression models were used to identify predictive factors for pCR., Results: One hundred and twenty-six patients (56.8%) had invasive lobular carcinoma and 28 patients (12.6%) had signet ring cell/mucinous carcinoma. A total of 45 patients (20.3%) achieved pCR. The pCR rate was 14.3% for lobular carcinoma and 17.9% for signet ring cell/mucinous carcinoma. The univariate analysis showed that estrogen receptor-negative tumours (p = 0.017), high Ki-67 (p = 0.008), high histologic grade (p<0.001), HER2+ expression (p<0.001), and non-lobular histologic type (p = 0.012) were predictive factors for pCR. The multivariate model revealed that HER2 expression (p<0.001) and Ki-67 (p = 0.005) were independent predictors., Conclusion: Neoadjuvant chemotherapy demonstrated effectiveness in ND-BC patients, leading to favourable pCR rates and enabling breast-conserving surgery. Predictive markers for pCR varied depending on histologic types, with HER2 expression, ER status, Ki-67, and histologic grade showing significance in non-ductal subtypes, while HER2 status alone was predictive in lobular carcinoma., Key Words: Neoadjuvant chemotherapy, Non-ductal breast cancer, Lobular carcinoma.
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- 2024
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18. How Many Bundles Does the Anterior Cruciate Ligament Consist of? A Case Report.
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Gunaydin B, Ozcaglayan TIK, Sever C, Oznur M, Cetin MU, Can E, and Eren OT
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In some cases with anterior cruciate ligament (ACL) injury, physical examination and magnetic resolution imaging cannot clearly identify whether the ACL is intact or partially or completely ruptured. A 40-year-old female patient was admitted to our clinic with complaints of knee pain. After the requested examinations, we could not clearly identify whether the ACL was intact or partially or completely ruptured. Arthroscopic knee surgery was planned for the patient. In diagnostic arthroscopy, it was also determined that there was a multibundle ACL that was not surrounded by the synovium and was tight in the figure 4 position. The surgery was completed by repairing the meniscal tear. It was seen in the current case report that the ACL was a multibundle structure without overlying synovium around. In such cases, it is difficult to evaluate the ACL, and it should be kept in mind that there may also be variations of the ACL., Competing Interests: None declared., (© Copyright 2023 by The Medical Bulletin of Sisli Etfal Hospital.)
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- 2023
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19. Investigation of serum E-Cadherin, VEGF121, Survivin, Tenascin C and Tetraspanin 8 levels in patients with glioblastoma.
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Tunckale T, Caliskan T, Potoglu B, Engin T, Guzel S, Celikkol A, Yilmaz A, and Oznur M
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- Humans, Biomarkers, Tumor genetics, Cadherins, Neoplasm Recurrence, Local, Survivin, Vascular Endothelial Growth Factor A, Glioblastoma pathology, Tenascin
- Abstract
Objective: The aim of this study is to determine biomarkers, which may be used in order to understand the pathophysiology, the diagnosis, progression surveillance/monitoring, and treatment efficacy of high graded glial tumors., Background: Radiological imaging in the diagnosis and relapse surveillance of glial tumors is sometimes insufficient. There is need for additional methods of diagnosis and surveillance in order to rule out contradictory circumstances., Method: Using enzyme like immune sorbent assay method, E-Cadherin, Tenascin C, Tetraspanin 8, Survivin and VEGF121 levels were investigated in serum and tumor tissues of 28 patients diagnosed with pathological glioblastoma, and in the serum of 26 healthy individuals. Correlation between tumor tissue values and Ki67 percentage, and P53 mutation, and difference between unhealthy and healthy serum levels were sought., Results: It was found out that E-Cadherin and VEGF 121 levels in the unhealthy serum were high in comparison to the control group (p 0.05)., Conclusion: EC and VEGF121 are biomarkers, which have the potential to be used in the diagnosis, recurrence and treatment follow-up in high graded glial tumors (Tab. 2, Fig. 1, Ref. 37). Text in PDF www.elis.sk Keywords: E-Cadherin, VEGF, Survivin, Tenascin-C, Tetraspanin, glioblastoma.
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- 2023
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20. Impact of the 3rd Edition of the Bethesda System for Reporting Thyroid Cytopathology on Grey Zone Categories.
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Guerreiro SC, Tastekin E, Mourao M, Loureiro I, Eusebio R, Marques HP, Oznur M, Caliskan CK, Schmitt FC, Bongiovanni M, and Canberk S
- Subjects
- Humans, Male, Female, Middle Aged, Retrospective Studies, Biopsy, Fine-Needle, Thyroid Cancer, Papillary, Thyroid Neoplasms diagnosis, Thyroid Neoplasms surgery, Thyroid Neoplasms pathology, Thyroid Nodule diagnosis, Thyroid Nodule surgery, Thyroid Nodule pathology, Adenocarcinoma, Follicular diagnosis, Adenocarcinoma, Follicular surgery, Adenocarcinoma, Follicular pathology
- Abstract
Introduction: Thyroid Bethesda Reporting System is a six-tiered system that aims to bring uniformity in reporting thyroid cytology and improve the communication with clinicians. The system has achieved its goal as a presurgical diagnostic method; however, it remains a screening method in the grey zone categories, namely atypia of undetermined significance (AUS) and follicular neoplasm (FN). The book recently released the 3rd edition, following the recent changes in thyroid pathology. One of the most important novelties is subgrouping AUS category and FN to be able to make a better risk stratification in these categories. Our group aims to retrospectively analyze a large dataset based on the new TBSRTC, with a focus on the grey zone categories., Methods: Only patients who underwent lobectomy or total thyroidectomy were included, allowing for direct comparison between cytological and histopathological results. Cytological evaluations, based on the TBSRTC 3rd edition, were methodically compared with their respective histopathological results, enabling a comprehensive analysis., Results: Of the 244 patients (female:male ratio = 8.8:1, mean age = 56), a total of 252 nodules were evaluated. A distinction was noted with 79 nodules (31%) diagnosed as AUS and 173 nodules (69%) as FN. Intriguingly, the risk of malignancy (ROM) for AUS-overall stood at 44.3%, with AUS-nuclear atypia at 50% and AUS-other at 43.2%. Although the AUS subdivisions did not demonstrate statistical significance, a significant disparity was observed in their distribution, with 15% as AUS-nuclear atypia compared to 85% as AUS-other. This disparity raises the question: Could AUS-other be considered the new waste-basket category in the TBSRTC 3rd edition? Using the TBSRTC 3rd edition as a base, we added a subclassification for FN nodules based on the presence or absence of papillary thyroid carcinoma (PTC) nuclear features. Our findings showed that differentiating FN with oncocytic characteristics correlated well with histological outcomes and ROMs. Though retrospective in design with inherent bias potential, our data suggest a possible improvement in PTC case segregation in the FN category when differentiating between FN nodules with and without PTC nuclear features., Conclusion: Our retrospective study sheds light on the potential advantages of the TBSRTC 3rd edition, particularly in refining the AUS and FN categories for thyroid nodules. The clear disparity in AUS subcategories raises important questions about their classification and potential future refinements. Moreover, the differentiation of FN nodules based on PTC nuclear features holds a promising approach for better risk stratification., (© 2023 S. Karger AG, Basel.)
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- 2023
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21. A Rare Case in Urology: Inflammatory Myofibroblastic Tumour.
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Akgul M, Sahin MF, Arslan A, Oznur M, and Yazici C
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- Humans, Male, Urinary Bladder pathology, Prostate pathology, Urology, Ureter, Hydronephrosis etiology, Hydronephrosis surgery, Granuloma, Plasma Cell diagnosis, Granuloma, Plasma Cell surgery, Granuloma, Plasma Cell pathology
- Abstract
Inflammatory myofibroblastic tumour (IMT) is a soft tissue malignancy with a mixture of myofibroblastic spindle cells with hyalinised stroma and inflammatory infiltrates. We report a case of a 35-year male patient with a 100×90 mm mass located at the posterior wall of the urinary bladder just adjacent to the prostate and rectum. The mass caused grade 3 hydronephrosis in the left kidney and grade 1 hydronephrosis in the right kidney. The patient was operated and the mass lesion was excised completely. Because the left ureter was adherent to the mass, it was excised at the most distal part and uretero-neo-cystostomy was performed as the bladder and the prostate were preserved. Morphology and immunohistochemistry were consistent with IMT. With surgical excision of the tumour, no recurrence or metastases were seen up to 3 years postoperatively. Key Words: Inflammatory myofibroblastic tumour, Bladder, Urinary system, Hydronephrosis.
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- 2022
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22. The shrinkage effect of formalin on renal cell carcinoma: Does it change the stages.
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Akgul M, Arslan AI, Yazici C, Altin E, and Oznur M
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- Male, Female, Humans, Formaldehyde pharmacology, Retrospective Studies, Nephrectomy methods, Carcinoma, Renal Cell diagnostic imaging, Carcinoma, Renal Cell surgery, Kidney Neoplasms diagnostic imaging, Kidney Neoplasms surgery, Kidney Neoplasms pathology
- Abstract
Objective: To determine the shrinkage effect of formalin on renal cell carcinoma., Methods: The retrospective study was conducted from October to November 2020 at Tekirdağ Namık Kemal University, Turkey, and comprised all radical and partial nephrectomy cases performed by a single surgeon in a single clinic between January 2014 and August 2020. Pre-operative images and post-operative pathology were reviewed by the same clinician. Pre-operative longest tumour diameter of radiological images and pathological specimens measured after formalin fixation shrinkage were compared, and the effect of the difference between the two measurements on the circumference of the tumour was examined. The formalin-related shrinkage rates of renal tumours according to the tumour size and the tumour types were also analysed. Data was analysed using SPSS 20., Results: Of the 101 cases, 58(57.4%) were of radical and 43(42.6%) of partial nephrectomy. Also, there were 77(76.2%) renal cell carcinoma cases, 22(21.8%) benign renal tumours and 2(1.9%) had other malignant tumours. There were 59(58.4%) males and 42(41.6%) females with an overall mean age of 58.1±12,2 years (range: 30-82 years). The mean radiological size of the renal tumours was 55.3±30.4 mm and it was 52.9±31.6 mm at pathological examination (p>0.05)., Conclusion: Formalin fixation of tissues post-surgery caused a difference between the radiological and pathological dimensions. Though the difference was no significant, under-staging due to the shrinkage post-surgery should be considered.
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- 2022
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23. COVID-19 pandemic impact on cytopathology practice in the post-lockdown period: An international, multicenter study.
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Vigliar E, Pisapia P, Dello Iacovo F, Alcaraz-Mateos E, Alì G, Ali SZ, Baloch ZW, Bellevicine C, Bongiovanni M, Botsun P, Bruzzese D, Bubendorf L, Büttner R, Canberk S, Capitanio A, Casadio C, Cazacu E, Cochand-Priollet B, D'Amuri A, Davis K, Eloy C, Engels M, Fadda G, Fontanini G, Fulciniti F, Hofman P, Iaccarino A, Ieni A, Jiang XS, Kakudo K, Kern I, Kholova I, Linton McDermott KM, Liu C, Lobo A, Lozano MD, Malapelle U, Maleki Z, Michelow P, Mikula MW, Musayev J, Özgün G, Oznur M, Peiró Marqués FM, Poller D, Pyzlak M, Robinson B, Rossi ED, Roy-Chowdhuri S, Saieg M, Savic Prince S, Schmitt FC, Seguí Iváñez FJ, Štoos-Veić T, Sulaieva O, Sweeney BJ, Tuccari G, van Velthuysen ML, VanderLaan PA, Vielh P, Viola P, Voorham QJM, Weynand B, Zeppa P, Faquin WC, Pitman MB, and Troncone G
- Subjects
- Communicable Disease Control, Humans, Pandemics prevention & control, SARS-CoV-2, COVID-19 epidemiology, Neoplasms diagnosis, Neoplasms epidemiology
- Abstract
Background: In a previous worldwide survey, the authors showed a drastic reduction in the number of cytological specimens processed during the coronavirus disease 2019 "lockdown" period along with an increase in malignancy rates. To assess the continued impact of the pandemic on cytological practices around the world, they undertook a second follow-up worldwide survey collecting data from the post-lockdown period (2020)., Methods: Participants were asked to provide data regarding their cytopathology activity during the first 12 weeks of their respective national post-lockdown period (2020), which ranged from April 4 to October 31. Differences between the post-lockdown period and the corresponding 2019 period were evaluated, and the authors specifically focused on rates of malignant diagnoses., Results: A total of 29 respondents from 17 countries worldwide joined the survey. Overall, a lower number of cytological specimens (n = 236,352) were processed in comparison with the same period in 2019 (n = 321,466) for a relative reduction of 26.5%. The overall malignancy rate showed a statistically significant increase (12,442 [5.26%] vs 12,882 [4.01%]; P < .001) during the same time period. Similar results were obtained if both malignancy and suspicious for malignancy rates were considered together (15,759 [6.58%] vs 16,011 [4.98%]; P < .001)., Conclusions: The data showed a persistent reduction in the cytological specimen volume during the post-lockdown period (2020). However, the relative increase in the cytological workload in the late part of the post-lockdown is a promising finding of a slow return to normality., (© 2022 American Cancer Society.)
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- 2022
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24. Gene Expression Profiles of Tumor Necrosis Factor-α and Endothelin-1 in Obstructive Sleep Apnea.
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Ugur KS, Acar M, Ozol D, Dagli E, Oznur M, Kosus A, and Gunduz M
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- Adult, Aged, Aged, 80 and over, Body Mass Index, Case-Control Studies, Cross-Sectional Studies, Endothelin-1 metabolism, Female, Humans, Male, Middle Aged, Polysomnography, Prospective Studies, RNA, Messenger metabolism, Sleep Apnea, Obstructive metabolism, Tumor Necrosis Factor-alpha metabolism, Young Adult, Endothelin-1 genetics, Sleep Apnea, Obstructive genetics, Tumor Necrosis Factor-alpha genetics
- Abstract
Background/aims: The aim of this study was to observe the relationship between the gene expression profiles of tumor necrosis factor (TNF)-α and endothelin (EDN)-1 and obstructive sleep apnea (OSA)., Methods: A prospective, cross-sectional study performed at a tertiary-care academic center; 108 patients with snoring and day-time sleeplessness were included in this study carried out in the Otolaryngology Department. All patients were evaluated with 1-night polysomnography (PSG). There were 63 patients with OSA and 45 patients without OSA. In the OSA group, the median apnea hypopnea index (AHI) was 29.1; in the non-OSA group, the median AHI was 2.1. Blood samples were obtained from all 108 patients for the genetic analysis of the expression of TNF-α and EDN-1. PSG findings and gene expression levels were evaluated in both groups., Results: The median (range) age was 46 (20-81) years, BMI 24.9 (15-49), EDN-1 gene expression 0.45 (0.02-67.88) pg/µL, and TNF-α gene expression 1.71 (0.08-59.52) pg/µL. We found that EDN-1 and TNF-α gene expression levels were significantly higher in the OSA group than in the control group (p = 0.009 vs. p < 0.001)., Conclusion: EDN-1 and TNF-α gene expression levels were associated with the occurrence of OSA., (© 2018 S. Karger AG, Basel.)
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- 2019
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25. Lichen nitidus presenting with trachyonychia.
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Albayrak H, Yanık ME, Erfan G, Oznur M, and Kulac M
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- Adrenal Cortex Hormones administration & dosage, Child, Preschool, Diagnosis, Differential, Humans, Lichen Nitidus drug therapy, Male, Nail Diseases drug therapy, Lichen Nitidus complications, Lichen Nitidus diagnosis, Nail Diseases complications, Nail Diseases diagnosis
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- 2017
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26. Coffin-Siris syndrome with café-au-lait spots, obesity and hyperinsulinism caused by a mutation in the ARID1B gene.
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Sonmez FM, Uctepe E, Gunduz M, Gormez Z, Erpolat S, Oznur M, Sagiroglu MS, Demirci H, and Gunduz E
- Abstract
Coffin-Siris syndrome (CSS) (MIM 135900) is characterized by developmental delay, severe speech impairment, distinctive facial features, hypertrichosis, aplasia or hypoplasia of the distal phalanx or nail of the fifth digit and agenesis of the corpus callosum. Recently, it was shown that mutations in the ARID1B gene are the main cause of CSS, accounting for 76% of identified mutations. Here, we report a 15 year-old female patient who was admitted to our clinic with seizures, speech problems, dysmorphic features, bilaterally big, large thumb, café-au-lait (CAL) spots, obesity and hyperinsulinism. First, the patient was thought to have an association of neurofibromatosis and Rubinstein Taybi syndrome. Because of the large size of the NF1 gene for neurofibromatosis and CREBBP gene for Rubinstein Taybi syndrome, whole exome sequence analysis (WES) was conducted and a novel ARID1B mutation was identified. The proband WES test identified a novel heterozygous frameshift mutation c.3394_3395insTA in exon 13 of ARID1B (NM_017519.2) predicting a premature stop codon p.(Tyr1132Leufs*67). Sanger sequencing confirmed the heterozygous c.3394_3395insTA mutation in the proband and that it was not present in her parents indicating de novo mutation. Further investigation and new cases will help to understand this phenomenon better.
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- 2016
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27. Protective effects of onion (Allium cepa) extract against doxorubicin-induced hepatotoxicity in rats.
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Mete R, Oran M, Topcu B, Oznur M, Seber ES, Gedikbasi A, and Yetisyigit T
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- Animals, Liver chemistry, Liver pathology, Male, Rats, Rats, Sprague-Dawley, Toxicity Tests, Acute, Chemical and Drug Induced Liver Injury pathology, Doxorubicin toxicity, Liver drug effects, Onions chemistry, Plant Extracts pharmacology, Protective Agents pharmacology
- Abstract
Background/aim: Doxorubicin (DOX) is a widely used and potent chemotherapeutic agent. However, serious dose-limiting toxicity through generation of free oxygen radicals is a commonly encountered clinical problem. The aim of the current study was to assess the protective role of onion (Allium cepa) extract (ACE) against DOX-induced hepatotoxicity in rats., Method: A total of 24 rats were randomly divided into 3 equal experimental groups: (1) DOX; (2) ACE + DOX; and (3) control groups. ACE was given orally as 1 mL of fresh ACE juice for 14 consecutive days followed by DOX injection. DOX was injected intraperitoneally in a single dose of 30 mg/kg body weight to induce hepatotoxicity, and the rats were killed after 48 h from injection. Control group was given saline only., Results: In the ACE pretreated group (ACE + DOX), serum aspartate transaminase, alanine transaminase, and tissue malondialdehyde and glutathione levels were significantly lower, while superoxide dismutase and glutathione peroxidase were higher compared with the DOX group. The histopathological examination of liver specimens revealed parenchymal necrosis, proliferation of biliary duct in DOX group; while ACE pretreatment provided marked reduction in these changes., Conclusion: Our study indicates that pretreatment with ACE protects against DOX-induced hepatotoxicity due to the antioxidant properties of ACE. Further studies on efficacy of antioxidant treatment by ACE in DOX-mediated toxicity and underlying mechanisms would provide a better explanation., (© The Author(s) 2013.)
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- 2016
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28. Symmetrical drug-related intertriginous and flexural exanthema due to codeine.
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Erfan G, Yanik ME, Kaya S, Tasolar K, Oznur M, and Kulac M
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- Breast, Exanthema pathology, Female, Groin, Humans, Middle Aged, Neck, Analgesics, Opioid adverse effects, Codeine adverse effects, Drug Eruptions etiology, Drug Eruptions pathology, Exanthema chemically induced
- Published
- 2015
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29. Leukocytoclastic vasculitis due to duloxetine.
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Erfan G, Alp R, Albayrak S, Oguz K, Kalayci S, Oznur M, and Kulac M
- Subjects
- Drug Eruptions pathology, Female, Humans, Middle Aged, Vasculitis, Leukocytoclastic, Cutaneous pathology, Analgesics adverse effects, Drug Eruptions etiology, Duloxetine Hydrochloride adverse effects, Vasculitis, Leukocytoclastic, Cutaneous chemically induced
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- 2015
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30. The role of Human Dectin-1 Y238X Gene Polymorphism in recurrent vulvovaginal candidiasis infections.
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Usluogullari B, Gumus I, Gunduz E, Kaygusuz I, Simavli S, Acar M, Oznur M, Gunduz M, and Kafali H
- Subjects
- Adult, Candidiasis, Vulvovaginal microbiology, Case-Control Studies, Female, Genetic Predisposition to Disease, Genotype, Humans, Recurrence, Risk Factors, Young Adult, Alleles, Candidiasis, Vulvovaginal genetics, Lectins, C-Type genetics, Polymorphism, Genetic
- Abstract
Recurrent vulvovaginal candidiasis (RVVC) is defined as having four or more symptomatic vulvovaginal candidiasis (VVC) attacks within a year. This study aimed to investigate whether Human Dectin-1 Y238X Gene Polymorphism plays a role in RVVC pathogenesis. In order to examine and explore this aim, an experimental study was undergone. The clinical study design was conducted with 50 women diagnosed with RVVC and had four or more symptomatic VVC attacks who were included in the experimental group; while 50 women who did not have previous RVVC history and diagnosis and did not have vaginal discharge and itching in the past year were included in the control group. Blood samples were collected from these patients and transferred to EDTA tubes, to investigate the Dectin-1 Y238X gene polymorphism, and stored at -80°. When Dectin-1 genotypes were compared, there was no significant difference between the two groups (p = 0.452, p = 0.615, p = 0.275). History of familial RVVC was significantly higher in the experimental group (p = 0.001). When the multivariate analysis was used to evaluate factors that could determine RVVC frequency, history of familial RVVC was found to increase the frequency of RVVC attacks by 3.3 units. This study is the first-of-its-kind to investigate the correlation between Dectin-1 Y238X polymorphism, which has not been previously studied in the Turkish population, and RVVC. The result of this study suggests that there is no correlation between this polymorphism and RVVC.
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- 2014
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31. Cytological features of pure micropapillary carcinoma of various organs: A report of eight cases.
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Huq GE, Canberk S, Oznur M, Yildiz P, Bahadir B, and Behzatoğlu K
- Abstract
Micropapillary carcinoma (MPC) is a rare aggressive tumor, which generally accompanies the primary carcinoma of the organ of its origin, while the pure form is extremely uncommon. Angiolymphatic involvement is widespread and a considerable proportion of the cases present with metastases. The current study presents eight pure MPC cases arising from the breast (n=3), urinary bladder (n=3), parotid gland (n=1) and lung (n=1, presenting with pericardial effusion), with the cytological findings. The eight patients included three female and five male cases aged between 48 and 74 years. The most common cytological findings were three-dimensional aggregates, cell clusters with angulated or scalloped borders, single cells with a columnar configuration and eccentric nuclei, and high-grade nuclear features. Histopathological sections showed accompanying in situ ductal carcinoma in the cases of MPC arising in the parotid gland and breast (n=3), and one case in the bladder exhibited only in situ MPC. The average follow-up period was 20 months (range, 6-54 months) and, during this period, three patients succumbed to the disease. At present, four patients are alive with disease and one patient is alive and disease-free. In conclusion, cytology is an important tool for the diagnosis and management of MPC.
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- 2014
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32. The first case of Henoch-Schonlein purpura associated with rosuvastatin: colonic involvement coexisting with small intestine.
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Gonen KA, Erfan G, Oznur M, and Erdogan C
- Subjects
- Colonic Diseases diagnosis, Humans, IgA Vasculitis diagnosis, Ileal Diseases diagnosis, Intestines diagnostic imaging, Male, Middle Aged, Rosuvastatin Calcium, Skin pathology, Tomography, X-Ray Computed, Ultrasonography, Colonic Diseases chemically induced, Fluorobenzenes adverse effects, Hydroxymethylglutaryl-CoA Reductase Inhibitors adverse effects, IgA Vasculitis chemically induced, Ileal Diseases chemically induced, Pyrimidines adverse effects, Sulfonamides adverse effects
- Abstract
Henoch-Schönlein purpura (HSP) is a systemic vasculitis affecting small vessels. It is the most common systemic vasculitis in children, and is rare in adults. Serious gastrointestinal complications are more common in childhood. Infections and drugs are the most prominent factors in the aetiology. Wall thickening in segments of the small intestine is commonly seen in imaging studies in gastrointestinal system (GIS) involvement. Simultaneous involvement of small intestine and colon is rare. An HSP case involving small intestine and colon in an adult patient due to the use of rosuvastatin, an antihyperlipidaemic agent, is presented, and is first of its kind reported in the literature.
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- 2014
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33. Gastric gastrointestinal stromal tumor with bone metastases - case report and review of the literature.
- Author
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Sahin E, Yetişyiğit T, Oznur M, and Elboğa U
- Subjects
- Antineoplastic Agents therapeutic use, Antineoplastic Combined Chemotherapy Protocols, Bone Neoplasms surgery, Bone Neoplasms therapy, Gastrointestinal Stromal Tumors surgery, Gastrointestinal Stromal Tumors therapy, Humans, Male, Middle Aged, Prognosis, Bone Neoplasms secondary, Gastrointestinal Stromal Tumors pathology
- Abstract
Gastrointestinal stromal tumors (GISTs) represent rather rare neoplasms. Most GISTs are benign; malignant tumors account for 20- 30% of cases (overall, approximately 10- 30% of GISTs exhibit malignant behavior). GISTs most commonly metastasize to the liver and abdominal cavity. Distant metastases to other sites, especially to the bones, are relatively rare. We report a case of a 62 year old man with metastatic spread of GIST to skull, ribs and both sacroiliac joints manifesting six months after surgical resection of a gastric tumor. Although bone metastases from GISTs are rare and there are only a few reported cases in the literature, this case emphasizes that metastatic disease should always be considered in a patient with gastric GIST and suspicious bone lesions.
- Published
- 2014
34. Protective effect of infliximab on ischemia/reperfusion injury in a rat ovary model: biochemical and histopathologic evaluation.
- Author
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Abali R, Tasdemir N, Yuksel MA, Guzel S, Oznur M, Nalbantoglu B, and Tasdemir UG
- Subjects
- Animals, Catalase blood, Female, Infliximab, Malondialdehyde metabolism, Nitric Oxide metabolism, Rats, Rats, Sprague-Dawley, Reperfusion Injury pathology, Reperfusion Injury prevention & control, Torsion Abnormality therapy, Antibodies, Monoclonal therapeutic use, Antioxidants therapeutic use, Ovary injuries, Reperfusion Injury drug therapy
- Abstract
Objective: The aim of this study was to investigate the effect of infliximab on experimentally induced ovarian ischemia/reperfusion injury (IRi)., Study Design: A total of 42 female rats were equally divided into 6 experimental groups; group 1: sham operation, group 2: 3-h ischemia, group 3 and 4: 3-h ischemia, 3-h reperfusion, group 5 and 6: 3-h ischemia, 24h reperfusion. In group 4 and group 6, 30 min before reperfusion, infliximab was administered intraperitoneally at a dose of 5mg/kg. Bilateral ovaries were removed for histopathologic and biochemical analysis. Serum MDA (sMDA), tissue MDA (tMDA), serum NO (sNO), tissue NO (tNO) and serum catalase concentrations were analyzed. Tissue damage of ovarian tissue was scored by histological examination., Results: The infliximab administration significantly lowered the sNO, tNO and sMDA concentrations in group 4 compared to group 3 (p=0.041, p=0.025 and p=0.035, respectively). sNO, tNO and sMDA concentrations were also lower in group 6 when compared to group 5, but this differences were not significant (p>0.05). On the other hand, tMDA concentrations were lower in infliximab-applied groups when compared to ischemia/reperfusion groups (group 3 vs. 4 and 5 vs. 6) (p=0.045 and p=0.048, respectively). Moreover, histopathologic tissue damage scores in infliximab administration groups were significantly lower than in ischemia/reperfusion groups (p<0.001)., Conclusion: Infliximab attenuates I/R-induced ovarian tissue injury in rats subjected to ischemia/reperfusion., (Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2013
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35. Lymphangioma: surrounding the ovarian vein and ovary.
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Gonen KA, Abali R, Oznur M, and Erdogan C
- Subjects
- Female, Humans, Lymphangioma pathology, Lymphangioma surgery, Middle Aged, Ovarian Neoplasms pathology, Ovarian Neoplasms surgery, Treatment Outcome, Lymphangioma diagnosis, Ovarian Neoplasms diagnosis, Ovary blood supply, Veins pathology
- Abstract
Lymphangiomas are usually benign lesions seen in the head and neck region in children. Intra-abdominal localisation is rare and the majority of these cases are in early childhood. Retroperitoneal lymphangiomas constitute approximately 1% of all lymphangiomas. They are generally diagnosed incidentally, may be asymptomatic or may present with a palpable abdominal mass. A limited number of cases of ovarian lymphangiomas have been reported in women, whereas there are no reported cases of paraovarian localisation. We present a rare case of lymphangioma located in bilateral paraovarian region and along the left ovarian vein with radiological findings.
- Published
- 2013
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36. Tear osmolarity and ocular surface changes in patient with polycystic ovary syndrome.
- Author
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Gonen T, Celik C, Oznur M, Abali R, Gonen KA, Horozoglu F, Aksu E, and Keskinbora KH
- Subjects
- Adult, Conjunctival Diseases diagnosis, Corneal Diseases diagnosis, Dry Eye Syndromes diagnosis, Female, Humans, Hyperandrogenism complications, Osmolar Concentration, Prospective Studies, Young Adult, Conjunctival Diseases complications, Corneal Diseases complications, Dry Eye Syndromes complications, Polycystic Ovary Syndrome complications, Tears chemistry
- Abstract
Purpose: To evaluate the tear osmolarity and ocular surface changes in patients with polycystic ovary syndrome (PCOS)., Materials and Methods: Forty-eight patients with recently diagnosed PCOS and thirty-three control volunteers were enrolled in this prospective, observational study. Ocular surface disease index (OSDI) score was calculated. Tear osmolarity was measured using the TearLab Osmolarity System (Tearlab, San Diego, CA, USA). All subjects also underwent the following ophthalmologic evaluation: Schirmer I test, tear-film breakup time (TBUT), ocular surface flourescein staining, and conjunctival impression cytology., Results: Mean OSDI score was significantly higher in patients with PCOS than control subjects (P = 0.001). Tear osmolarity was similar in both groups (P = 0.404). There were no significant differences between groups in Schirmer I test results, TBUT, and ocular surface flourescein staining scores (P > 0.05). Compared to control group, a statistically significant squamous metaplasia was observed in temporal bulbar conjunctival impression cytology specimens in PCOS group (P = 0.032)., Conclusions: In patients with recently diagnosed PCOS, tear volume and osmolarity are not affected but, conjunctival morphology may be affected, though on a limited scale.
- Published
- 2013
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37. Precipitation and exacerbation of psoriasiform eruption due to leuprolide acetate.
- Author
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Erfan G, Rifaioglu EN, Kulac M, Kalayci S, Kaya S, and Oznur M
- Subjects
- Adult, Female, Humans, Severity of Illness Index, Antineoplastic Agents, Hormonal adverse effects, Breast Neoplasms drug therapy, Leuprolide adverse effects, Psoriasis chemically induced
- Published
- 2013
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38. A rare cause of virilization; Ovarian steroid cell tumor, not otherwise specified (NOS).
- Author
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Taşdemir N, Celik C, Abalı R, Aksu E, Oznur M, and Yılmaz M
- Abstract
Sex cord-stromal tumors account for 5% of ovarian tumors and 2% of malignant ovarian tumors. Steroid cell tumors (SCT), not otherwise specified (NOS), are rare sex cord-stromal tumors of the ovary and account for less than 0.1% of all ovarian tumors. We report a rare case of a post-menopausal woman presented with hirsutism, virilism and with findings of hyperestrogenism.
- Published
- 2012
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39. A synchronous occurrence of urothelial carcinoma with abundant myxoid stroma and inverted papilloma of the urinary bladder.
- Author
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Behzatoğlu K, Yildiz P, Oznur M, and Bozkurt ER
- Abstract
Abundant myxoid stroma rarely occurs in urothelial carcinomas, and may cause diagnostic challenges when cells with eosinophilic cytoplasm forming nests and cords in a myxoid background are seen, particularly in the absence of typical carcinomatous appearance. Microscopic examination of transurethral resection specimen of a 71-year-old male patient revealed non-cohesive oval or elongated tumor cells with eosinophilic cytoplasm arranged in cord-like filigree pattern in an abundant myxoid stroma. Immunohistochemically the tumor was positive for cytokeratin 7, cytokeratin 20, and 34BE12. About 90 to 100% nuclear staining was observed with p63, p53, and Ki-67. A second neoplasm with a flat overlying urothelial epithelium and a complete inverted cellular growth pattern was also noted. The neoplasm exhibited less than 2% and 10% nuclear staining with Ki-67 and p53, respectively. Considering histological, histochemical, and immunohistochemical findings, a diagnosis of synchronous urothelial carcinoma with abundant myxoid stroma and inverted papilloma was made.
- Published
- 2012
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40. Detection of deletions and/or amplifications of genes related with lung cancer by multiplex ligation-dependent probe amplification (MLPA) technique.
- Author
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Tepeli E, Muslumanoglu MH, Uludag A, Buyukpinarbasili N, Ozdemir M, Oznur M, Aslan H, and Artan S
- Subjects
- Carcinoma, Non-Small-Cell Lung pathology, Chromosomes, Human genetics, Chromosomes, Human ultrastructure, DNA, Neoplasm genetics, Female, Genetic Association Studies, Genomic Instability, Humans, Lung Neoplasms pathology, Male, Middle Aged, Neoplasm Staging, Carcinoma, Non-Small-Cell Lung genetics, Gene Amplification, Gene Deletion, Genes, Neoplasm, Lung Neoplasms genetics, Nucleic Acid Amplification Techniques
- Abstract
Background: Lung cancer has the leading mortality rate among all cancers and it is the second most common cause of death following cardiovascular diseases.The aim of the study was determining deleted and/or amplified regions of 64 different loci previously associated with lung cancer, by using Multiplex Ligation-dependent Probe Amplification (MLPA)., Results: The most frequently seen deletions in lung cancerous tissues were in 2p, 3p, 13q, 17p, 16p and the most frequently seen amplifications were in 17q, 8p and 5q. We observed same deletions in the same regions in normal lung tissues as in cancerous tissues in lower frequencies. Deletions in 5q, 8p, 9q, 10p, 11p. 11q, 12p, 14q, 17q and 21q probe regions were seen especially in cancerous tissues., Materials/methods: One hundred non small cell lung cancer (NSCLC) tissue samples which had been previously examined histopathologically were included in this investigation. DNA extracts of normal lung tissues from the same patients were used as control group in the study., Conclusions: As a conclusion, it was determined that MLPA is an alternative technique which can give cheap, fast and reliable results in the screening of lung cancers. The findings obtained in the study are compatible with the literature. MLPA is one of the most important molecular techniques which have been developed recently and it can be used in cancer screening easily and reliably.
- Published
- 2009
- Full Text
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41. Parachordoma or myoepithelion?: a case report of a rare soft tissue tumor.
- Author
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Behzatoğlu K, Canberk S, Bahadir B, and Oznur M
- Subjects
- Aged, Biomarkers, Tumor analysis, Calcium-Binding Proteins analysis, Chordoma chemistry, Chordoma surgery, Diagnosis, Differential, Female, Glial Fibrillary Acidic Protein analysis, Humans, Immunohistochemistry, Microfilament Proteins analysis, Myoepithelioma chemistry, Myoepithelioma surgery, Soft Tissue Neoplasms chemistry, Soft Tissue Neoplasms surgery, Treatment Outcome, Calponins, Chordoma pathology, Myoepithelioma pathology, Soft Tissue Neoplasms pathology
- Published
- 2007
- Full Text
- View/download PDF
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