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Aktas E, Seber T, Cagir U, Uylar Seber T, Kamalak Guzel D, Savranlar A, Tokmak TT, Celik I. The relationship between thorax computed tomography findings and prognosis in patients diagnosed with COVID-19. Eur Rev Med Pharmacol Sci 2023; 27:10839-10844. [PMID: 38039012 DOI: 10.26355/eurrev_202311_34450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
OBJECTIVE This study aimed to demonstrate the relationship between thorax computed tomography (CT) findings at the time of admission and prognosis using a semiquantitative CT severity scoring system in patients diagnosed with coronavirus disease 2019 (COVID-19) who tested positive for reverse transcriptase polymerase chain reaction (RT-PCR). PATIENTS AND METHODS A total of 305 patients aged 18 years and older who were diagnosed with COVID-19 confirmed by RT-PCR and underwent thorax CT at the time of admission, were included in the study between March and July 2020. The demographic data of the patients, their presenting complaints at the time of admission, RT-PCR results, and thorax CT images were scanned retrospectively from electronic medical records. Lesions on thorax CT were evaluated for the presence of ground glass opacity, consolidation, and septal thickening and scoring. RESULTS No significant relationship was found between mortality and CT score or other parameters. A significant relationship was found between admission to the intensive care unit and CT scoring (p=0.014), aortic diameter (p=0.032), chronic pulmonary disease (p=0.004), halo sign (p=0.031), mortality (p<0.001), fever (p=0.038), and dyspnea (p=0.031). A statistically significant difference was detected in the score parameter between discharged patients and intensive care unit patients who survived and those who died (p<0.001). In the parameter of the number of lobes, a statistically significant difference was found only between discharged patients and intensive care unit patients who survived (p=0.016). CONCLUSIONS Thorax CT is an advisor for early diagnosis, treatment, and prognosis assessment of the disease. Semiquantitative CT severity scoring can provide valuable information about the prognosis of the patient.
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Affiliation(s)
- E Aktas
- Department of Radiology, Ankara Oncology Education and Research Hospital, Ankara, Turkey.
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Alafnan A, Dogan R, Bender O, Celik I, Mollica A, Malik JA, Rengasamy KRR, Break MKB, Khojali WMA, Alharby TN, Atalay A, Anwar S. Beta Elemene induces cytotoxic effects in FLT3 ITD-mutated acute myeloid leukemia by modulating apoptosis. Eur Rev Med Pharmacol Sci 2023; 27:3270-3287. [PMID: 37140277 DOI: 10.26355/eurrev_202304_32098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
OBJECTIVE: β-Elemene, a sesquiterpene with a broad anti-cancer spectrum, is particularly effective against drug-resistant and complex tumors. It can also be efficient against FLT3-expressed acute myeloid leukemia. This research aims to determine whether β-Elemene has cytotoxic effects on FLT3 ITD-mutated AML cells. MATERIALS AND METHODS: Cytotoxicity, cell morphology, mRNA analysis with apoptotic markers, and analysis of 43 distinct protein markers related to cell death, survival, and resistance were all performed to elucidate its mechanism. Additionally, in order to understand how β-Elemene and FLT3 interact, molecular docking, molecular dynamics simulations, and computational ADME investigations were performed. RESULTS: β-Elemene exhibited cytotoxic activity against FLT3-mutated MV4-11 and FLT3 wild-type THP-1 cells, with an IC50 of around 25 µg/ml. The molecular studies revealed that β-Elemene inhibited cell proliferation by inducing p53, and the involvement of p21, p27, HTRA, and HSPs were also demonstrated. The interactive inhibition in proliferation was confirmed via molecular docking and dynamics analyses. β-Elemene occupied the FLT3 enzymatic pocket with good stability at the FLT3 active site. CONCLUSIONS: We concluded from our observations that β-Elemene causes cell death in ITD mutant AML cells, together with the effects of stress factors and inhibiting cell division.
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Affiliation(s)
- A Alafnan
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail, Saudi Arabia.
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Işık A, Acar Çevik U, Karayel A, Celik I, Erçetin T, Koçak A, Özkay Y, Kaplancıklı ZA. Synthesis and molecular modelling of thiadizole based hydrazone derivatives as acetylcholinesterase and butyrylcholinesterase inhibitory activities. SAR QSAR Environ Res 2022; 33:193-214. [PMID: 35243936 DOI: 10.1080/1062936x.2022.2041723] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Some novel substituted thiazolylhydrazine derivatives were designed, synthesized and their inhibitory effects on acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) enzymes and antioxidant activities were investigated. The structures of the synthesized compounds were determined using different spectroscopic techniques such as 1H-NMR, 13C-NMR, and HRMS. According to the enzyme inhibition results, the synthesized compounds showed selectivity against BuChE enzyme inhibition. Compounds 5e, 5g, 5i and 5j displayed significant BuChE inhibition potencies. Among them, compound 5i was found to be the most effective derivative with an IC50 value of 56.01 ± 0.054 µM. In addition, their antioxidant properties were evaluated in vitro through the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. For compounds 5e, 5g, 5i and 5j in silico molecular docking and 100 ns molecular dynamics simulations studies against the BuChE enzyme were performed to determine possible protein-ligand interactions and stability. DFT-D3 study was performed to stabilize of compounds 5e, 5g, 5i and 5j both in gas and solvent medium and investigated their electronic properties. Of all geometries, that of DMSO is the lowest one.
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Affiliation(s)
- A Işık
- Department of Biochemistry, Faculty of Science, Selçuk University, Konya, Turkey
| | - U Acar Çevik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Doping and Narcotic Compounds Analysis Laboratory, Anadolu University, Eskişehir, Turkey
| | - A Karayel
- Faculty of Arts and Science Department of Physics, Hitit University, Çorum, Turkey
| | - I Celik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - T Erçetin
- Department of Pharmacognosy, Eastern Mediterranean University, Famagusta, Cyprus
| | - A Koçak
- Department of Chemistry, Faculty of Science, Selçuk University, Konya, Turkey
| | - Y Özkay
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Doping and Narcotic Compounds Analysis Laboratory, Anadolu University, Eskişehir, Turkey
| | - Z A Kaplancıklı
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, Eskişehir, Turkey
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Kolus T, Coban E, Yalcinkaya H, Esra Ulker H, Durmus E, Celik I. The Effectiveness of Different Types of Varnishes in Preventing Erosion. Dent Mater 2022. [DOI: 10.1016/j.dental.2021.12.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bati B, Celik I, Vuran NE, Turan A, Alkan EE, Zirek AK. Effects of Gundelia tournefortii L. on biochemical parameters, antioxidant activities and DNA damage in a rat model of experimental obesity. BRAZ J BIOL 2021; 83:e251198. [PMID: 34550296 DOI: 10.1590/1519-6984.251198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/19/2021] [Indexed: 11/21/2022] Open
Abstract
The present study was designed to investigate the effects of Gundelia tournefortii L. plant extract on different tissues in terms of DNA damage, biochemical and antioxidant parameter values in rats with high-calorie diets. With this aim, Wistar albino male rats were divided into 4 groups containing 6 rats each and the study was completed over 12 weeks duration. At the end of the implementation process over the 12 weeks, rats were sacrificed and blood and tissue samples were obtained. Analyses were performed on blood and tissue samples. According to results for DNA damage (8-OHdG), in brain tissue the OG2 group was significantly reduced compared to the NC group. For MDA results in liver tissue, OG1 and OG2 groups were determined to increase by a significant degree compared to the control group, while the OG2 group was also increased significantly compared to the obese group. In terms of the other parameters, comparison between the groups linked to consumption of a high calorie diet (HCD) and administration of Gundelia tournefortii L. in terms of antioxidant activities and serum samples obtained statistically significant results. Gundelia tournefortii L. plant extracts had effects that may be counted as positive on antioxidant parameter activity and were especially identified to improve DNA damage and MDA levels in brain tissues. Additionally, consumption of Gundelia tournefortii L. plant extract in the diet may have antiobesity effects; thus, it should be evaluated for use as an effective weight-loss method and as a new therapeutic agent targeting obesity.
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Affiliation(s)
- B Bati
- Van Yüzüncü Yıl University, Faculty of Education, Department of Mathematics and Science Education, Van, Turkey
| | - I Celik
- Van Yüzüncü Yıl University, Science Faculty, Department of Molecular Biology and Genetic, Van, Turkey
| | - N Eray Vuran
- Van Yüzüncü Yıl University, Science Faculty, Department of Molecular Biology and Genetic, Van, Turkey
| | - A Turan
- Van Yüzüncü Yıl University, Science Faculty, Department of Molecular Biology and Genetic, Van, Turkey
| | - E E Alkan
- Van Yüzüncü Yıl University, Faculty of Education, Department of Mathematics and Science Education, Van, Turkey
| | - A K Zirek
- Hakkari University, Institute of Sciences, Medical Services and Techniques, Hakkari, Turkey
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Kabas A, Celik I. Effect of newly developed interspecific hybrid rootstocks on mineral nutrient composition and fruit quality in tomato (Solanum lycopersicum L.). AAlim 2021. [DOI: 10.1556/066.2021.00009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
AbstractTomato (Solanum lycopersicum L.) is one of the important vegetables in the world due to large production area and consumer interest. Biotic and abiotic stresses have negative effect on tomato production. Utilisation of rootstocks conferring resistance to biotic stresses can be considered as the most effective and environment friendly solution in tomato production to overcome this problem. Although wild tomato species is a good rootstock candidate due to its resistance to multiple plant diseases, effects of wild tomato species as rootstock on mineral nutrient composition and fruit quality are not clear. In the present study, effects of interspecific hybrids derived from two wild tomato species (Solanum habrochaites and Solanum penellii) as rootstock on tomato fruit mineral nutrient composition (phosphor (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), manganese (Mn), and copper (Cu)) and fruit quality traits (soluble solids content (SSC), pH, percent titratable acidity (TA), and lycopene content) were evaluated. In the study, Amaron, Armstrong, and Arazi commercial rootstocks were used as control and AK0004 F1 (candidate tomato hybrid) was used as a source of scion. As result, only lycopene content was affected by different rootstocks. S. penellii was found to be with more potential for lycopene content. For mineral nutrient composition, all hybrids and controls had similar contents of potassium, phosphor, calcium, and magnesium. Manganese and copper contents decreased in all plants. S. habrochaites had more potential regarding nitrogen, iron, and zinc contens than S. penellii. This is the first study to evaluate two interspecific hybrids derived from S. habrochaites and S. penellii, and the results might be useful to understand effects of rootstocks derived from wild tomato species on mineral nutrient content and fruit quality.
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Affiliation(s)
- A. Kabas
- Manavgat Vocational School, Akdeniz University, Antalya, Turkey
| | - I. Celik
- Çal Vocational School, Pamukkale University, Denizli, Turkey
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Barişta I, Tekuzman G, Güllü I, Baltali E, Kars A, Ozişik Y, Güler N, Celik I, Atahan IL, Firat D. Non-Hodgkin's Lymphomas of the Tonsil: A Retrospective Analysis of Twenty-Eight Patients with Primary Tonsillary Lymphoma. Tumori 2018; 81:234-7. [PMID: 8540117 DOI: 10.1177/030089169508100403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aims To analyze the clinical and therapeutic aspects of patients with primary tonsillary non-Hodgkin's lymphoma. Methods Twenty-eight patients with primary tonsillary non-Hodgkin's lymphoma who had been followed in the Hacettepe Oncology Institute between 1974 and 1992 were retrospectively analyzed. Fifteen patients were male, 13 were female. Median age was 55 years. Results Constitutional symptoms were present in 10 patients (35.7%). Stages according to the Ann Arbor classification were I and II in 12 and 16 patients, respectively. According to the Rappaport classification, poorly differentiated lymphocytic was the most common pathologic subgroup (42.9%). Grades according to the Working Formulation were low, intermediate and high in 3, 22 and 3 patients, respectively. Twenty-two patients had received chemotherapy. Cyclophosphamide, vincristine and prednisone (CVP), and cyclophosphamide, doxorubicin, vincristine and prednisone (CHOP) were the regimens most commonly employed. Eighteen patients received radiotherapy to Waldeyer's ring and neck. Eight patients achieved remission with chemotherapy plus radiotherapy, 7 patients with chemotherapy alone, and 5 patients with radiotherapy alone. In addition to the 20 patients who achieved complete remission, 3 patients achieved partial remission; the overall response rate was 82.1%. The response rates and survival attained with the combined modality, chemotherapy, or radiotherapy alone were not statistically different (P > 0.05). The median follow-up was 14 months. Overall and disease-free survival at 5 years were 62.6% and 77.6%, respectively. Pathologic grade was the most important prognostic factor influencing overall survival in the Cox multivariate model. Conclusions Poorly differentiated lymphocytic lymphomas were the most common pathologic subtype, and pathologic grade was the most important prognostic factor to influence survival in the present study. Although combined modality treatment did not appear to be superior to chemotherapy or radiotherapy alone, a larger number of patients is needed to draw definite conclusions.
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Affiliation(s)
- I Barişta
- Department of Medical Oncology, Hacettepe University, Ankara, Turkey
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8
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Kiraz S, Baltali E, Güler N, Barişta I, Benekli M, Celik I, Güllü IH, Kars A, Tekuzman G, Firat D. Ifosfamide and Etoposide in Previously Treated Patients with Advanced Breast Cancer. Tumori 2018; 83:604-7. [PMID: 9226029 DOI: 10.1177/030089169708300225] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Aims and background Ifosfamide is an active alkylating agent in the treatment of breast cancer, as a first-line therapy and in advanced disease. Since the combination of etoposide with an alkylating agent produces a synergistic and tolerable activity in various malignancies, in the present study, ifosfamide and etoposide were administered to patients with advanced breast cancer to evaluate the response characteristics and the toxicity profile. Study design The combination of ifosfamide, mesna and etoposide was prospectively administered to 41 previously treated patients with stage IV breast carcinoma. The treatment schedule consisted of ifosfamide, 1500 mg/m2, infused over 24 hrs with 1500 mg/m2 mesna on days 1 to 5 and 120 mg/m2 etoposide, infused over 1 hr on days 1 to 3, to be repeated every 4th week. Results After a median follow-up of 10 months, an objective response rate of 23% (overall 2.5% complete remission and 20.5% partial remission) and a median response duration of 5.3 months were obtained in 39 assessable patients. The non-responder group consisted of 28.3% stable disease and 48.7% progressive disease. The prior status of chemotherapy was the only significant prognostic factor with an impact on the response rate. The overall toxicity was generally mild, with grade 3 myelotoxicity encountered in 25.7% of patients. Conclusions The tolerable side effect profile of the ifosfamide and etoposide combination might be advantageous as regards the quality of life. To improve the rate and/or the duration of response and to clarify the precise role of the ifosfamide-etoposide combination in previously treated advanced breast cancer, further trials are warranted.
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Affiliation(s)
- S Kiraz
- Department of Medical Oncology, Hacettepe University, Ankara, Turkey
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Ozaydın T, Oznurlu Y, Sur E, Celik I, Uluısık D, Dayan MO. Effects of bisphenol A on antioxidant system and lipid profile in rats. Biotech Histochem 2018; 93:231-238. [DOI: 10.1080/10520295.2017.1420821] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Affiliation(s)
- T Ozaydın
- Departments of Histology and Embryology, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
| | - Y Oznurlu
- Departments of Histology and Embryology, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
| | - E Sur
- Departments of Histology and Embryology, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
| | - I Celik
- Departments of Histology and Embryology, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
| | - D Uluısık
- Departments of Physiology, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
| | - MO Dayan
- Departments of Anatomy, Selcuk University, Faculty of Veterinary Science, Konya, Turkey
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Xiong W, Tian H, Clark A, Shaw J, Kaleta R, Celik I, Girard P. Pharmacodynamic (PD) biomarkers for the p70S6K/Akt inhibitor, M2698: Translation from animal to human and relevance to dose selection. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx367.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Erdem H, Inan A, Guven E, Hargreaves S, Larsen L, Shehata G, Pernicova E, Khan E, Bastakova L, Namani S, Harxhi A, Roganovic T, Lakatos B, Uysal S, Sipahi OR, Crisan A, Miftode E, Stebel R, Jegorovic B, Fehér Z, Jekkel C, Pandak N, Moravveji A, Yilmaz H, Khalifa A, Musabak U, Yilmaz S, Jouhar A, Oztoprak N, Argemi X, Baldeyrou M, Bellaud G, Moroti RV, Hasbun R, Salazar L, Tekin R, Canestri A, Čalkić L, Praticò L, Yilmaz-Karadag F, Santos L, Pinto A, Kaptan F, Bossi P, Aron J, Duissenova A, Shopayeva G, Utaganov B, Grgic S, Ersoz G, Wu AKL, Lung KC, Bruzsa A, Radic LB, Kahraman H, Momen-Heravi M, Kulzhanova S, Rigo F, Konkayeva M, Smagulova Z, Tang T, Chan P, Ahmetagic S, Porobic-Jahic H, Moradi F, Kaya S, Cag Y, Bohr A, Artuk C, Celik I, Amsilli M, Gul HC, Cascio A, Lanzafame M, Nassar M. The burden and epidemiology of community-acquired central nervous system infections: a multinational study. Eur J Clin Microbiol Infect Dis 2017; 36:1595-1611. [PMID: 28397100 DOI: 10.1007/s10096-017-2973-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [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: 02/12/2017] [Accepted: 03/22/2017] [Indexed: 12/11/2022]
Abstract
Risk assessment of central nervous system (CNS) infection patients is of key importance in predicting likely pathogens. However, data are lacking on the epidemiology globally. We performed a multicenter study to understand the burden of community-acquired CNS (CA-CNS) infections between 2012 and 2014. A total of 2583 patients with CA-CNS infections were included from 37 referral centers in 20 countries. Of these, 477 (18.5%) patients survived with sequelae and 227 (8.8%) died, and 1879 (72.7%) patients were discharged with complete cure. The most frequent infecting pathogens in this study were Streptococcus pneumoniae (n = 206, 8%) and Mycobacterium tuberculosis (n = 152, 5.9%). Varicella zoster virus and Listeria were other common pathogens in the elderly. Although staphylococci and Listeria resulted in frequent infections in immunocompromised patients, cryptococci were leading pathogens in human immunodeficiency virus (HIV)-positive individuals. Among the patients with any proven etiology, 96 (8.9%) patients presented with clinical features of a chronic CNS disease. Neurosyphilis, neurobrucellosis, neuroborreliosis, and CNS tuberculosis had a predilection to present chronic courses. Listeria monocytogenes, Staphylococcus aureus, M. tuberculosis, and S. pneumoniae were the most fatal forms, while sequelae were significantly higher for herpes simplex virus type 1 (p < 0.05 for all). Tackling the high burden of CNS infections globally can only be achieved with effective pneumococcal immunization and strategies to eliminate tuberculosis, and more must be done to improve diagnostic capacity.
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Affiliation(s)
- H Erdem
- Principal Coordinator of ID-IRI, Ankara, Turkey.
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Medical Academy, 06010, Etlik, Ankara, Turkey.
| | - A Inan
- Department of Infectious Diseases and Clinical Microbiology, Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - E Guven
- Beytepe Murat Erdi Eker State Hospital, Ankara, Turkey
| | - S Hargreaves
- International Health Unit, Section of Infectious Diseases and Immunity, Commonwealth Building, Hammersmith Campus, Imperial College London, London, UK
| | - L Larsen
- Department of Infectious Diseases Q, Odense University Hospital, Odense, Denmark
| | - G Shehata
- Department of Neurology and Psychiatry, Assiut University Hospital, Assiut, Egypt
| | - E Pernicova
- Avenier, Centres for Vaccination and Travel Medicine, Prague, Czech Republic
- Faculty Hospital Brno, Department of Infectious Diseases, Brno, Czech Republic
| | - E Khan
- Shifa International Hospital, Islamabad, Pakistan
| | - L Bastakova
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - S Namani
- Infectious Diseases Clinic, University Clinical Center of Kosovo, Prishtina, Kosovo
| | - A Harxhi
- Service of Infectious Disease, University Hospital Center of Tirana, Tirana, Albania
| | - T Roganovic
- Infectious Diseases Clinic, University Hospital Clinical Center Banja Luka, Banja Luka, Bosnia and Herzegovina
| | - B Lakatos
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - S Uysal
- Department of Infectious Diseases and Clinical Microbiology, Seyfi Demirsoy State Hospital, Buca, İzmir, Turkey
| | - O R Sipahi
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - A Crisan
- Department of Infectious Diseases, Victor Babes University of Medicine and Pharmacy, Timisoara, Romania
| | - E Miftode
- Hospital of Infectious Diseases, Gr. T. Popa University of Medicine and Pharmacy, Iasi, Romania
| | - R Stebel
- Faculty Hospital Brno, Department of Infectious Diseases and Masaryk University Faculty of Medicine, Brno, Czech Republic
| | - B Jegorovic
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Z Fehér
- Department of Infectious Diseases, Markusovszky University Teaching Hospital, Szombathely, Hungary
| | - C Jekkel
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - N Pandak
- General Hospital Slavonski Brod, Department for Infectious Diseases, School of Medicine, University of Split, Split, Croatia
| | - A Moravveji
- Social Determinants of Health Research Center, Department of Community Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - H Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, Ondokuz Mayis University School of Medicine, Samsun, Turkey
| | - A Khalifa
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - U Musabak
- Department of Immunology and Allergy, Losante Hospital, Ankara, Turkey
| | - S Yilmaz
- Gulhane Medical Academy, Blood Bank, Clinical Microbiology Division, Ankara, Turkey
| | - A Jouhar
- Department of Neurology, Damascus Hospital, Damascus, Syria
| | - N Oztoprak
- Antalya Education and Research Hospital, Antalya, Turkey
| | - X Argemi
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - M Baldeyrou
- Infectious Diseases Department, Nouvel Hôpital Civil, Strasbourg, France
| | - G Bellaud
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - R V Moroti
- Carol Davila University of Medicine and Pharmacy and Matei Bals National Institute for Infectious Diseases, Bucharest, Romania
| | - R Hasbun
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - L Salazar
- Medical School, Department of Infectious Diseases, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - R Tekin
- Department of Infectious Diseases and Clinical Microbiology, Dicle University School of Medicine, Diyarbakir, Turkey
| | - A Canestri
- Department of Infectious Diseases, Tenon University Hospital, Paris, France
| | - L Čalkić
- Department of Infectious Diseases, Zenica Cantonal Hospital, Zenica, Bosnia and Herzegovina
| | - L Praticò
- University Division of Infectious and Tropical Diseases, Piazza Spedali Civili, 25123, Brescia, Italy
| | - F Yilmaz-Karadag
- Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - L Santos
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Pinto
- Infectious Diseases Service, Centro Hospitalar São João and Faculty of Medicine, University of Porto, Porto, Portugal
| | - F Kaptan
- Department of Infectious Diseases and Clinical Microbiology, Katip Celebi University School of Medicine, Izmir, Turkey
| | - P Bossi
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - J Aron
- Department Maladies Infectieuses, Institut Pasteur de Paris-HPA, Paris, France
| | - A Duissenova
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - G Shopayeva
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - B Utaganov
- Department of Infectious and Tropical Diseases, Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | - S Grgic
- Clinic for Infectious Diseases, University Hospital of Mostar, Mostar, Bosnia and Herzegovina
| | - G Ersoz
- Department of Infectious Diseases and Clinical Microbiology, Mersin University School of Medicine, Mersin, Turkey
| | - A K L Wu
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - K C Lung
- Department of Clinical Pathology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - A Bruzsa
- Department of Infectious Diseases, Saint Laszlo Hospital, Budapest, Hungary
| | - L B Radic
- Department of Infectious Diseases, General Hospital Dubrovnik, Dubrovnik, Croatia
| | - H Kahraman
- Department of Infectious Diseases and Clinical Microbiology, Ege University School of Medicine, Izmir, Turkey
| | - M Momen-Heravi
- Department of Infectious Diseases, Social Determinants of Health Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - S Kulzhanova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - F Rigo
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Konkayeva
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - Z Smagulova
- Department of Infectious Diseases, Astana Medical University, Astana, Kazakhstan
| | - T Tang
- Infectious Diseases Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - P Chan
- Neurology Team, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - S Ahmetagic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - H Porobic-Jahic
- University Clinical Center Tuzla, Tuzla, Bosnia and Herzegovina
| | - F Moradi
- Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - S Kaya
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University School of Medicine, Trabzon, Turkey
| | - Y Cag
- School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Medeniyet University, Istanbul, Turkey
| | - A Bohr
- Institute of Inflammation Research, Department of Infectious Diseases and Rheumatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - C Artuk
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - I Celik
- Department of Infectious Diseases and Clinical Microbiology, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - M Amsilli
- Infectious Diseases Unit, CHU Bicètre, Paris, France
| | - H C Gul
- Department of Infectious Diseases and Clinical Microbiology, Gulhane Training and Research Hospital, Ankara, Turkey
| | - A Cascio
- Department of Health Promotion Sciences and Mother and Child Care "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - M Lanzafame
- Unit of Infectious Diseases, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - M Nassar
- Infection Control Department, Saudi German Hospital Group, Jeddah, Saudi Arabia
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12
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Schädel-Höpfner M, Böhringer G, Gotzen L, Celik I. Traction Radiography for the Diagnosis of Scapholunate Ligament Tears. ACTA ACUST UNITED AC 2016; 30:464-7. [PMID: 15993522 DOI: 10.1016/j.jhsb.2005.04.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2003] [Accepted: 04/25/2005] [Indexed: 10/25/2022]
Abstract
The diagnosis of scapholunate ligament injury by traction radiography was investigated within a consecutive study. The right wrists of 25 healthy volunteers and 22 wrists with arthroscopically proven complete scapholunate ligament tears were examined. Traction radiography was performed under fluoroscopy with a force of 5 kg applied to the thumb. In the normal wrists, this led to selective widening of the scapholunate joint space whereas the lunotriquetral distance remained unchanged. In 25 healthy right wrists, the median scapholunate distance measured 2.1 (range 1.3–2.6) mm on resting radiographs and 2.2 (range 1.7–3.5) mm on the stress radiographs. For the 22 wrists with complete scapholunate ligament tears, the median scapholunate distance was increased from 2.0 (range 1.0–3.0) mm to 3.8 (range 3.0–5.5) mm by traction (median difference of 1.8 (range 1.0–3.0) mm). In conclusion, a scapholunate distance of 3.0 mm or more in unloaded wrists or widening of the scapholunate interval by 1.0 mm or more under thumb traction should both be considered as pathological findings. We recommend traction radiography as a simple and valuable diagnostic procedure for suspected scapholunate ligament injury.
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Affiliation(s)
- M Schädel-Höpfner
- Department of Traumatology and Hand Surgery, University Hospital, Marburg, Germany.
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13
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Tirakotai W, Mennel HD, Lapanich S, Sure U, Bertalanffy H, Celik I. The Possible Role of Mast Cells and VEGF in Peritumoural Oedema of Secretory Meningioma. J Med Assoc Thai 2016; 99 Suppl 3:S8-S115. [PMID: 29901331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Secretory meningiomas constitute a relatively rare subtype of meningiomas and present often with massive peritumoural oedema. From our previous report, a high number of mast cells were demonstrable in this subtype of meningiomas. The present study aimed to obtain more information about mast cell derived progangiogenic factors and mediators as well as VEGF receptors in secretory meningioma. Additionally, the correlation of histological factors such as the presence of mast cells and the radiological evidence of surrounding tumour oedema was analysed. MATERIAL AND METHOD Sixteen cases of secretory meningioma were examined. Relevant clinical information was obtained from the patient files. The peritumoural oedema was determined either by CT or MRI scans and graded as mild, moderate and severe. Immunohistochemical studies of histamine, substance P, serotonin, VEGF and VEGF receptors were performed. A double-blind quantitative evaluation of mast cells staining positively for VEGF in a comparison with total mast cells in secretory meningiomas was made by two histopathologists. RESULTS There was no immunoreactivity against histamine or substance P within the tumour tissue or in mast cells. Fine granules of serotonin were demonstrated within the mast cells and a coarse granular expression of VEGF was found within the mast cells. Our preliminary data demonstrated that tumours with moderate to severe degree of peritumoural oedema usually contained more than 50% of VEGF-staining positive mast cells. CONCLUSION Secretory meningiomas are characterized by a significantly increased number of mast cells. VEGF and serotonin might be involved in the pathophysiological process of this vasogenic brain oedema. The preliminary data demonstrated the potential relation between the radiological evidence of increasing oedema and the high numbers of mast cell staining positively for VEGF.
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Hayran KM, Yuce D, Celik I, Erman M. Need for Proper Training for Assessing Dependency and Exposure of Smoking. Eur J Public Health 2015. [DOI: 10.1093/eurpub/ckv176.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Urun Y, Abal H, Turna H, Esin E, Sedef A, Alkan A, Oksüzoğlu B, Ozdemir N, Sendur M, Sezer A, Kiliçkap S, Akbulut H, Celik I. 3354 Prognostic factors for survival in patients with metastatic melanoma treated with ipilimumab: Turkish Oncology Group (TOG) Study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31872-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Yuce D, Hayran M, Kilickap S, Erman M, Celik I. Health Related Quality of Life in Cancer Patients: Evaluation With A Self-Administered Ipad Application. Value Health 2014; 17:A573. [PMID: 27201919 DOI: 10.1016/j.jval.2014.08.1921] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- D Yuce
- Hacettepe University, Ankara, Turkey
| | - M Hayran
- Hacettepe University, Ankara, Turkey
| | | | - M Erman
- Hacettepe University, Ankara, Turkey
| | - I Celik
- Hacettepe University, Ankara, Turkey
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Hayran M, Yuce D, Huseyin B, Esin E, Kilickap S, Erman M, Celik I. Association of Health Care Cost with Quality of Life for Various Types of Cancers. Value Health 2014; 17:A631. [PMID: 27202241 DOI: 10.1016/j.jval.2014.08.2257] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- M Hayran
- Hacettepe University, Ankara, Turkey
| | - D Yuce
- Hacettepe University, Ankara, Turkey
| | - B Huseyin
- Hacettepe University, Ankara, Turkey
| | - E Esin
- Hacettepe University, Ankara, Turkey
| | | | - M Erman
- Hacettepe University, Ankara, Turkey
| | - I Celik
- Hacettepe University, Ankara, Turkey
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Erman M, Hayran M, Celik I, Kilickap S, Huseyin B, Yuce D. High Smoking Cessation Rates After National Awareness Campaigns and By Comprehensive Treatment Approach. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu353.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Kamisli S, Hayran M, Kucukcoban S, Kiliçkap S, Yüce D, Celik I. 160 Study of interaction with a group of cancer patients: guiding cancer patients through psychoeducational interventions. Eur J Oncol Nurs 2014. [DOI: 10.1016/s1462-3889(14)70177-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Vermorken JB, Psyrri A, Mesía R, Peyrade F, Beier F, de Blas B, Celik I, Licitra L. Impact of tumor HPV status on outcome in patients with recurrent and/or metastatic squamous cell carcinoma of the head and neck receiving chemotherapy with or without cetuximab: retrospective analysis of the phase III EXTREME trial. Ann Oncol 2014; 25:801-807. [PMID: 24577117 PMCID: PMC3969553 DOI: 10.1093/annonc/mdt574] [Citation(s) in RCA: 173] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Tumor human papillomavirus (HPV) status is an important prognostic factor in locoregionally advanced squamous cell carcinoma of the head and neck (SCCHN). Prognostic value in recurrent and/or metastatic (R/M) disease remains to be confirmed. This retrospective analysis of the EXTREME trial, comparing chemotherapy plus cetuximab with chemotherapy first line in R/M SCCHN, investigated efficacy and prognosis according to tumor p16 and HPV status. PATIENTS AND METHODS Paired tissue samples were used: p16INK4A expression was assessed by immunohistochemistry, and HPV status determined in extracted DNA samples using oligonucleotide hybridization assays. RESULTS Altogether, 416 of 442 patients had tumor samples available for p16 and HPV: 10% of tumors were p16 positive and 5% were HPV positive. Adding cetuximab to chemotherapy improved survival, irrespective of tumor p16 or HPV status. This pattern remained in a combined analysis of p16 and HPV. p16 positivity and HPV positivity were associated with prolonged survival compared with p16 negativity and HPV negativity. Subgroup analysis of patients with oropharyngeal cancer demonstrated a similar pattern to all evaluable patients. CONCLUSION The results from this analysis suggest that p16 and HPV status have prognostic value in R/M SCCHN and survival benefits of chemotherapy plus cetuximab over chemotherapy alone are independent of tumor p16 and HPV status.
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MESH Headings
- Aged
- Antibodies, Monoclonal, Humanized/administration & dosage
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/virology
- Cetuximab
- Cyclin-Dependent Kinase Inhibitor p16/genetics
- Cyclin-Dependent Kinase Inhibitor p16/isolation & purification
- Disease-Free Survival
- Female
- Head and Neck Neoplasms/drug therapy
- Head and Neck Neoplasms/genetics
- Head and Neck Neoplasms/pathology
- Head and Neck Neoplasms/virology
- Humans
- Male
- Middle Aged
- Neoplasm Metastasis
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/genetics
- Neoplasm Recurrence, Local/pathology
- Neoplasm Recurrence, Local/virology
- Papillomaviridae/genetics
- Papillomaviridae/isolation & purification
- Papillomaviridae/pathogenicity
- Prognosis
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Affiliation(s)
- J B Vermorken
- Department of Medical Oncology, Antwerp University Hospital, Edegem, Belgium.
| | - A Psyrri
- Internal Medicine Propaedeutic, University of Athens Medical School, Attikon University Hospital, Athens, Greece
| | - R Mesía
- Department of Medical Oncology, Catalan Institute of Oncology, Hospitalet de Llobregat, Barcelona, Spain
| | - F Peyrade
- Department of Onco-Hematology, Centre Régional de Lutte Contre le Cancer de Nice, Nice, France
| | - F Beier
- Global Biostatistics, Merck KGaA, Darmstadt, Germany
| | - B de Blas
- Global Clinical Development Unit, Merck KGaA, Darmstadt, Germany
| | - I Celik
- Global Clinical Development Unit, Merck KGaA, Darmstadt, Germany
| | - L Licitra
- Head and Neck Medical Oncology Unit, Department of Cancer Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
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Kutluk T, Mutlu Hayran K, Kilickap S, Yuce D, Celik I, Erman M, Yalcin S. Increasing performance of a hospital-based cancer registry: Hacettepe University hospitals experience. J BUON 2013; 18:1088-1096. [PMID: 24344044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE High-quality hospital-based cancer registry systems are the key elements of a healthy population-based cancer data. The purpose of this study was to present a recent history of establishing a valuable and reliable hospital- based cancer registry in a university hospital in Turkey, and the data gathered by this system in the last 9 years. METHODS This study included the cancer registry records of Hacettepe University Hospitals between 1-Jan-2003, and 31-Dec-2011. The study cohort included data of 39351 cancer patients and the cancer registry system was based on active data acquisition method. RESULTS Most frequent departments of reference were Medical Oncology, Radiation Oncology, General Surgery, Urology, and Pediatrics. The annual number of records gradually increased from 2675 in 2003 to 5152 in 2011. The 5 cancer types most frequency seen in adults were lung (15.5%), prostate (13.5%), stomach (6.6%), bladder (6.2%), and colon (5.8%) in men; and breast (32.7%), ovary (6.4%), uterine corpus (6.2%), uterine cervix (5.6%), and thyroid (5.0%) in women. Childhood cancers were classified according to the International Classification of Childhood Cancers, 3rd Edition (ICCC-3), and the most frequent 5 cancer types in children were tumors of the central nervous system (20.1%), lymphomas (14.6%), leukemia (14.1%), retinoblastoma (9.4%), and tumors of the sympathetic nervous system (7.7%). CONCLUSION Active data acquisition from departments that deal with oncologic patients in a hospital is the precise method for establishing a high-quality cancer registry system that is able to resemble the general population. Hospital- based cancer registry systems also provide highly critical information for planning, monitoring, and measuring the cancer-related services, research, and education.
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Affiliation(s)
- T Kutluk
- Department of Pediatric Oncology, Hacettepe University Cancer Institute, Ankara, Turkey
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Ozaydın T, Celik I, Sur E, Oznurlu Y, Uluısık D. Cytochemistry of peripheral blood leukocytes in thoroughbred foals. Biotech Histochem 2013; 88:295-301. [PMID: 23614369 DOI: 10.3109/10520295.2013.782067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We attempted to characterize the cytochemical staining patterns of leukocytes and to determine the percentages of alpha-naphthyl acetate esterase (ANAE) and acid phosphatase (ACPase) positive lymphocytes in peripheral blood of thoroughbred foals at different ages. Blood samples were obtained from the jugular veins of 60 healthy thoroughbred foals, 1 day, 3 days and 1 year old. Each age group included 10 male and 10 female animals. Peroxidase (PO) activity was detected in neutrophils, eosinophils and monocytes. Lymphocytes were negative for PO staining. Periodic acid-Schiff (PAS) staining was observed in neutrophils and monocytes; eosinophils were negative. The majority of lymphocytes were negative, but a few cells showed granular PAS positivity. Monocytes were strongly positive for ANAE and ACPase, and the enzymatic reaction was common in lymphocytes. Neutrophils showed a weakly positive reaction for ANAE and ACPase. Eosinophil granules were negative or weakly positive for ANAE and usually negative for ACP, but intergranular areas were positive. Mean ANAE positive peripheral blood lymphocytes (PBL) were 67.70, 73.10 and 49.20% in females; 64.00, 70.53, and 50.60% in males 1 day, 3 days, and 1 year old, respectively. ACPase positive PBL were 27.33, 32.83, and 37.40% in females; 29.67, 31.67, and 38.40% in males 1 day, 3 days, and 1 year old, respectively. For both enzymes, the differences between mean values for the genders were not statistically significant, but significant differences were found with regard to age. We provide comparative hematological data as a guide for identifying blood cells in thoroughbred foals.
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Affiliation(s)
- T Ozaydın
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Selçuk, 42075 Konya, Turkey.
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24
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Lordick F, Kang YK, Chung HC, Salman P, Oh SC, Bodoky G, Kurteva G, Volovat C, Moiseyenko VM, Gorbunova V, Park JO, Sawaki A, Celik I, Götte H, Melezínková H, Moehler M. Capecitabine and cisplatin with or without cetuximab for patients with previously untreated advanced gastric cancer (EXPAND): a randomised, open-label phase 3 trial. Lancet Oncol 2013; 14:490-9. [PMID: 23594786 DOI: 10.1016/s1470-2045(13)70102-5] [Citation(s) in RCA: 640] [Impact Index Per Article: 58.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Patients with advanced gastric cancer have a poor prognosis and few efficacious treatment options. We aimed to assess the addition of cetuximab to capecitabine-cisplatin chemotherapy in patients with advanced gastric or gastro-oesophageal junction cancer. METHODS In our open-label, randomised phase 3 trial (EXPAND), we enrolled adults aged 18 years or older with histologically confirmed locally advanced unresectable (M0) or metastatic (M1) adenocarcinoma of the stomach or gastro-oesophageal junction. We enrolled patients at 164 sites (teaching hospitals and clinics) in 25 countries, and randomly assigned eligible participants (1:1) to receive first-line chemotherapy with or without cetuximab. Randomisation was done with a permuted block randomisation procedure (variable block size), stratified by disease stage (M0 vs M1), previous oesophagectomy or gastrectomy (yes vs no), and previous (neo)adjuvant (radio)chemotherapy (yes vs no). Treatment consisted of 3-week cycles of twice-daily capecitabine 1000 mg/m(2) (on days 1-14) and intravenous cisplatin 80 mg/m(2) (on day 1), with or without weekly cetuximab (400 mg/m(2) initial infusion on day 1 followed by 250 mg/m(2) per week thereafter). The primary endpoint was progression-free survival (PFS), assessed by a masked independent review committee in the intention-to-treat population. We assessed safety in all patients who received at least one dose of study drug. This study is registered at EudraCT, number 2007-004219-75. FINDINGS Between June 30, 2008, and Dec 15, 2010, we enrolled 904 patients. Median PFS for 455 patients allocated capecitabine-cisplatin plus cetuximab was 4.4 months (95% CI 4.2-5.5) compared with 5.6 months (5.1-5.7) for 449 patients who were allocated to receive capecitabine-cisplatin alone (hazard ratio 1.09, 95% CI 0.92-1.29; p=0.32). 369 (83%) of 446 patients in the chemotherapy plus cetuximab group and 337 (77%) of 436 patients in the chemotherapy group had grade 3-4 adverse events, including grade 3-4 diarrhoea, hypokalaemia, hypomagnesaemia, rash, and hand-foot syndrome. Grade 3-4 neutropenia was more common in controls than in patients who received cetuximab. Incidence of grade 3-4 skin reactions and acne-like rash was substantially higher in the cetuximab-containing regimen than in the control regimen. 239 (54%) of 446 in the cetuximab group and 194 (44%) of 436 in the control group had any grade of serious adverse event. INTERPRETATION Addition of cetuximab to capecitabine-cisplatin provided no additional benefit to chemotherapy alone in the first-line treatment of advanced gastric cancer in our trial. FUNDING Merck KGaA.
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Affiliation(s)
- Florian Lordick
- University Cancer Center Leipzig, University of Leipzig, Leipzig, Germany.
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Kibar AE, Hallioglu O, Erdem S, Celik I. Prenatal Diagnosis and Postnatal Follow-up of congenitally corrected transposition of the great arteries and recurrent supraventricular tachycardia. Images Paediatr Cardiol 2013; 15:7-11. [PMID: 23720695 PMCID: PMC3663155] [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] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The prenatal sonographic diagnosis of congenitally corrected transposition of the great arteries (ccTGA), a rare form of congenital heart disease is very difficult. A24-year-old woman was referred to our center at 28 weeks' gestationbecause of suspected fetal cardiac anomalies. We report a case of ccTGA with supraventricular tachycardia, ventricular septal defect, pulmonary valve stenosis, tricuspid valvar displacement and moderate tricuspid regurgitation during her pregnancy. The combined presence of SVT and ccTGA are occasionally present in the literature.
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Affiliation(s)
- AE Kibar
- Departments of Pediatric Cardiology, Mersin Maternal and Child Health Hospital, Mersin, Turkey.,
Kibar Ayse Esin, Mersin Maternal and Child Health Hospital Güneykent/ Mersin, Turkey.
| | - O Hallioglu
- Departments of Pediatric Cardiology, Mersin Maternal and Child Health Hospital, Mersin, Turkey
| | - S Erdem
- Departments of Pediatric Cardiology, Mersin Maternal and Child Health Hospital, Mersin, Turkey
| | - I Celik
- Departments of Neonatology, Neonatal Intensive Care Unit, Mersin Maternal and Child Health Hospital, Mersin, Turkey
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Rüschoff J, Kerr KM, Grote HJ, Middel P, von Heydebreck A, Alves VA, Baldus SE, Büttner R, Carvalho L, Fink L, Jochum W, Lo AWI, López-Ríos F, Marx A, Molina TJ, Olszewski WT, Rieker RJ, Volante M, Thunnissen E, Wrba F, Celik I, Störkel S. Reproducibility of immunohistochemical scoring for epidermal growth factor receptor expression in non-small cell lung cancer: round robin test. Arch Pathol Lab Med 2012; 137:1255-61. [PMID: 23270410 DOI: 10.5858/arpa.2012-0605-oa] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
CONTEXT The addition of cetuximab to first-line chemotherapy substantially prolonged survival in patients with advanced non-small cell lung cancer whose tumors expressed high levels of epidermal growth factor receptor (EGFR; immunohistochemistry score of ≥200 on a scale of 0-300). OBJECTIVE To evaluate the interobserver reproducibility of this EGFR immunohistochemistry scoring system, based on both the tumor cell membrane staining intensity (graded 0-3+) and the percentage of cells staining at each intensity. DESIGN In parts 1 (initial feasibility study) and 2 of this 2-part round robin test, sections of different non-small cell lung cancer tissue microarrays were stained in a central reference laboratory. Following reference evaluation, EGFR expression in 30 selected tumor cores was characterized in serial sections by lung cancer pathology specialists. The reproducibility of scoring by different raters was assessed. Analysis of between-rater agreement was based on the allocation of EGFR immunohistochemistry scores into low- (<200) and high- (≥200) EGFR expression groups. RESULTS After discussion with raters of the issues impacting reproducibility identified in part 1 and following adjustment of processes, part 2 of the round robin test showed a high interobserver agreement in EGFR immunohistochemistry scoring, with an overall concordance rate of 90.9% and a mean κ coefficient of 0.812. Specimens with a reference EGFR immunohistochemistry score of lower than 200 and of 200 or higher showed mean concordance rates of 94.7% and 85.6%, respectively. CONCLUSIONS After appropriate training, assessing EGFR expression by this immunohistochemistry-based method allowed a highly reproducible allocation of non-small cell lung cancers into clinically relevant high- or low-EGFR expression groups.
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Affiliation(s)
- Josef Rüschoff
- Department of Pathology, Institute of Pathology Nordhessen, Kassel, Germany.
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van Krieken JH, Normanno N, Blackhall F, Boone E, Botti G, Carneiro F, Celik I, Ciardiello F, Cree IA, Deans ZC, Edsjö A, Groenen PJTA, Kamarainen O, Kreipe HH, Ligtenberg MJL, Marchetti A, Murray S, Opdam FJM, Patterson SD, Patton S, Pinto C, Rouleau E, Schuuring E, Sterck S, Taron M, Tejpar S, Timens W, Thunnissen E, van de Ven PM, Siebers AG, Dequeker E. Guideline on the requirements of external quality assessment programs in molecular pathology. Virchows Arch 2012; 462:27-37. [PMID: 23250354 DOI: 10.1007/s00428-012-1354-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/06/2012] [Accepted: 11/29/2012] [Indexed: 12/01/2022]
Abstract
Molecular pathology is an integral part of daily diagnostic pathology and used for classification of tumors, for prediction of prognosis and response to therapy, and to support treatment decisions. For these reasons, analyses in molecular pathology must be highly reliable and hence external quality assessment (EQA) programs are called for. Several EQA programs exist to which laboratories can subscribe, but they vary in scope, number of subscribers, and execution. The guideline presented in this paper has been developed with the purpose to harmonize EQA in molecular pathology. It presents recommendations on how an EQA program should be organized, provides criteria for a reference laboratory, proposes requirements for EQA test samples, and defines the number of samples needed for an EQA program. Furthermore, a system for scoring of the results is proposed as well as measures to be taken for poorly performing laboratories. Proposals are made regarding the content requirements of an EQA report and how its results should be communicated. Finally, the need for an EQA database and a participant manual are elaborated. It is the intention of this guideline to improve EQA for molecular pathology in order to provide more reliable molecular analyses as well as optimal information regarding patient selection for treatment.
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Affiliation(s)
- J Han van Krieken
- Department of Pathology 824, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
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Karakas E, Kann S, Höffken H, Bartsch DK, Celik I, Görg C, Pfestroff A. Does contrast-enhanced cervical ultrasonography improve preoperative localization results in patients with sporadic primary hyperparathyroidism? J Clin Imaging Sci 2012; 2:64. [PMID: 23230546 PMCID: PMC3515932 DOI: 10.4103/2156-7514.103054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 09/08/2012] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE Pre-operative localization studies are inevitable in patients with primary hyperparathyroidism (pHPT), who are eligible for focused or minimally invasive parathyroidectomy (MIP). High-resolution ultrasonography (US) in combination with planar (99m)Tc-Sestamibi-scintigraphy (MIBI) and additional single-photon emission computed tomography (SPECT) are the standard procedures to localize enlarged parathyroid glands. Our aim was to evaluate the practicability and significance of contrast-enhanced ultrasonography (CEUS) in patients with pHPT. MATERIALS AND METHODS All investigations were performed at the University Hospital Marburg. Totally, 25 patients with biochemical proven pHPT underwent preoperative US, MIBI/SPECT, and CEUS. For CEUS, a suspension of phospholipid-stabilized sulfur-hexafluoride (SF6) microbubbles in combination with a special 12 MHz linear US probe was used. All patients were investigated by two sonographers, who did not get to view the findings noted by the other. Finally, surgery was performed and histopathological results were obtained from 24 patients. RESULTS In 17 (68%) patients, US and MIBI/SPECT already raised suspicion of parathyroid lesions and all suspected lesions were reassessed by CEUS. However, no additional information was obtained using CEUS. Especially in eight patients with negative or inconsistent US and MIBI/SPECT results, CEUS did not provide additional information regarding the site of the suspected parathyroid adenoma. Overall, no side effects were observed using CEUS. Surgical cure was achieved in all patients. CONCLUSION In this limited cohort of patients, no additional information could be obtained using the costly CEUS compared to results of US and MIBI/SPECT.
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Affiliation(s)
- Elias Karakas
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital Marburg, Germany
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Oznurlu Y, Celik I, Sur E, Ozaydın T, Oğuz H, Altunbaş K. Determination of the effects of aflatoxin B1givenin ovoon the proximal tibial growth plate of broiler chickens: histological, histometric and immunohistochemical findings. Avian Pathol 2012; 41:469-77. [DOI: 10.1080/03079457.2012.712673] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Psyrri A, Licitra L, De Blas B, Celik I, Vermorken J. Safety and Efficacy of Cisplatin Plus 5-Fu and Cetuximab in HPV-Positive and HPV-Negative Recurrent and/or Metastatic Squamous Cell Carcinoma of the Head and Neck (R/M SCCHN): Analysis of the Phase III Extreme Trial. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33592-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Baltaci AK, Mogulkoc R, Salbacak A, Celik I, Sivrikaya A. The role of zinc supplementation in the inhibition of tissue damage caused by exposure to electromagnetic field in rat lung and liver tissues. ACTA ACUST UNITED AC 2012; 113:400-3. [PMID: 22794512 DOI: 10.4149/bll_2012_090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The objective of the present study was to examine the effects of zinc supplementation on the oxidant damage in lung and liver tissues in rats exposed to a 50-Hz frequency magnetic field for 5 minutes every other day over a period of 6 months. METHODS The study included 24 adult male Sprague-Dawley rats, which were divided into the three groups in equal numbers: Group 1, the control group (G1); Group 2, the group exposed to an electromagnetic field (G2); and Group 3, the group, which was exposed to an EMF and supplemented with zinc (G3). At the end of the 6-month procedures, the animals were decapitated to collect lung and liver tissue samples, in which MDA was analyzed using the "TBARS method (nmol/g/protein)", GSH by the "biuret method (mg/g/protein)" and zinc levels by atomic emission (µg/dl). RESULTS MDA levels in lung and liver tissues in G2 were higher than those in G1 and G3, and the levels in G3 were higher than those in G1 (p<0.01). As for GSH levels, G3 had GSH levels higher than G1 and G2, and G2 had GSH levels higher than G1 (p<0.01). Zinc values in the liver and lung tissues were the highest in the Group 3 and the lowest in the Group 2 (p<0.01). CONCLUSION Results of the study indicated that exposure to an electromagnetic field caused cellular damage in lung and liver tissues and zinc supplementation inhibited the inflicted cellular damage. Another important result of this study that needs emphasis was that exposure to an electromagnetic field led to a significant decrease in zinc levels in lung and liver tissues (Tab. 3, Ref. 23).
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Affiliation(s)
- A K Baltaci
- Selcuk University, Department of Physiology, Konya, Turkey.
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Bokemeyer C, Van Cutsem E, Rougier P, Ciardiello F, Heeger S, Schlichting M, Celik I, Köhne CH. Addition of cetuximab to chemotherapy as first-line treatment for KRAS wild-type metastatic colorectal cancer: Pooled analysis of the CRYSTAL and OPUS randomised clinical trials. Eur J Cancer 2012; 48:1466-75. [PMID: 22446022 DOI: 10.1016/j.ejca.2012.02.057] [Citation(s) in RCA: 417] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 02/20/2012] [Indexed: 11/28/2022]
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Tejpar S, Celik I, Schlichting M, Sartorius U, Bokemeyer C, Van Cutsem E. Association of KRAS G13D tumor mutations with outcome in patients with metastatic colorectal cancer treated with first-line chemotherapy with or without cetuximab. J Clin Oncol 2012; 30:3570-7. [PMID: 22734028 DOI: 10.1200/jco.2012.42.2592] [Citation(s) in RCA: 272] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE We investigated in the first-line setting our previous finding that patients with chemorefractory KRAS G13D-mutated metastatic colorectal cancer (mCRC) benefit from cetuximab treatment. METHODS Associations between tumor KRAS mutation status (wild-type, G13D, G12V, or other mutations) and progression-free survival (PFS), survival, and response were investigated in pooled data from 1,378 evaluable patients from the CRYSTAL and OPUS studies. Multivariate analysis correcting for differences in baseline prognostic factors was performed. RESULTS Of 533 patients (39%) with KRAS-mutant tumors, 83 (16%) had G13D, 125 (23%) had G12V, and 325 (61%) had other mutations. Significant variations in treatment effects were found for tumor response (P = .005) and PFS (P = .046) in patients with G13D-mutant tumors versus all other mutations (including G12V). Within KRAS mutation subgroups, cetuximab plus chemotherapy versus chemotherapy alone significantly improved PFS (median, 7.4 v 6.0 months; hazard ratio [HR], 0.47; P = .039) and tumor response (40.5% v 22.0%; odds ratio, 3.38; P = .042) but not survival (median, 15.4 v 14.7 months; HR, 0.89; P = .68) in patients with G13D-mutant tumors. Patients with G12V and other mutations did not benefit from this treatment combination. Patients with KRAS G13D-mutated tumors receiving chemotherapy alone experienced worse outcomes (response, 22.0% v 43.2%; odds ratio, 0.40; P = .032) than those with other mutations. Effects were similar in the separate CRYSTAL and OPUS studies. CONCLUSION The addition of cetuximab to first-line chemotherapy seems to benefit patients with KRAS G13D-mutant tumors. Relative treatment effects were similar to those in patients with KRAS wild-type tumors but with lower absolute values.
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Affiliation(s)
- Sabine Tejpar
- Digestive Oncology Unit, University Hospital Gasthuisberg, Herestraat 49, Leuven, Belgium B-3000.
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Oznurlu Y, Sur E, Celik I, Ozaydin T. Hematology and enzyme histochemistry of peripheral blood lymphocytes in domestic pigeon (Columba liviaf.domestica). Biotech Histochem 2012; 87:340-5. [DOI: 10.3109/10520295.2012.661080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pirker R, Störkel S, von Heydebreck A, Celik I, O'Byrne KJ. A STEPP too far for FLEX? – Authors' reply. Lancet Oncol 2012. [DOI: 10.1016/s1470-2045(12)70057-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Ozaydin T, Sur E, Celik I, Oznurlu Y, Aydin MF. Histological and enzyme histochemical investigation of the hemal nodes of the hair goat. Biotech Histochem 2012; 87:377-84. [PMID: 22235874 DOI: 10.3109/10520295.2012.652174] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We investigated the structure of the hemal node in six healthy hair goats using histological and enzyme histochemical methods. After processing, tissue sections were stained with Crossman's trichrome, Gordon-Sweet's silver and Pappenheim's panoptic stains. Alpha-naphthyl acetate esterase (ANAE) and acid phosphatase (ACP-ase) were demonstrated in frozen sections. Hemal nodes were encapsulated by connective tissue and few smooth muscle cells. Several trabeculae originated from the capsule and extended into the hemal node. A subcapsular sinus was present beneath the capsule and was continuous with the deeper sinuses. Subcapsular and deep sinuses were filled with erythrocytes. The parenchyma consisted of lymphoid follicles, diffuse interfollicular lymphocytes and irregular wide lymphoid cords. Cortical and medullary regions were not distinct. ANAE (+) and ACP-ase (+) cells were located mainly in the germinal centers of the lymphoid follicles and also were scattered equally in the interfollicular region and lymphoid cords. Monocytes, macrophages and reticular cells displayed a diffuse positive reaction, whereas localized granular positivity was observed in lymphocytes. We demonstrated that the general structure of the hair goat hemal nodes is similar to that of other ruminant species.
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Affiliation(s)
- T Ozaydin
- Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Selcuk, Campus, Konya, Turkey.
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Nurullahoglu-Atalik E, Okudan N, Belviranli M, Esen H, Yener Y, Celik I. Responses of acrylamide-treated rat bladders. ACTA ACUST UNITED AC 2012; 114:7-11. [DOI: 10.4149/bll_2013_002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pirker R, Pereira JR, von Pawel J, Krzakowski M, Ramlau R, Park K, de Marinis F, Eberhardt WEE, Paz-Ares L, Störkel S, Schumacher KM, von Heydebreck A, Celik I, O'Byrne KJ. EGFR expression as a predictor of survival for first-line chemotherapy plus cetuximab in patients with advanced non-small-cell lung cancer: analysis of data from the phase 3 FLEX study. Lancet Oncol 2011; 13:33-42. [PMID: 22056021 DOI: 10.1016/s1470-2045(11)70318-7] [Citation(s) in RCA: 446] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Findings from the phase 3 First-Line ErbituX in lung cancer (FLEX) study showed that the addition of cetuximab to first-line chemotherapy significantly improved overall survival compared with chemotherapy alone (hazard ratio [HR] 0·871, 95% CI 0·762-0·996; p=0·044) in patients with advanced non-small-cell lung cancer (NSCLC). To define patients benefiting most from cetuximab, we studied the association of tumour EGFR expression level with clinical outcome in FLEX study patients. METHODS We used prospectively collected tumour EGFR expression data to generate an immunohistochemistry score for FLEX study patients on a continuous scale of 0-300. We used response data to select an outcome-based discriminatory threshold immunohistochemistry score for EGFR expression of 200. Treatment outcome was analysed in patients with low (immunohistochemistry score <200) and high (≥200) tumour EGFR expression. The primary endpoint in the FLEX study was overall survival. We analysed patients from the FLEX intention-to-treat (ITT) population. The FLEX study is registered with ClinicalTrials.gov, number NCT00148798. FINDINGS Tumour EGFR immunohistochemistry data were available for 1121 of 1125 (99·6%) patients from the FLEX study ITT population. High EGFR expression was scored for 345 (31%) evaluable patients and low for 776 (69%) patients. For patients in the high EGFR expression group, overall survival was longer in the chemotherapy plus cetuximab group than in the chemotherapy alone group (median 12·0 months [95% CI 10·2-15·2] vs 9·6 months [7·6-10·6]; HR 0·73, 0·58-0·93; p=0·011), with no meaningful increase in side-effects. We recorded no corresponding survival benefit for patients in the low EGFR expression group (median 9·8 months [8·9-12·2] vs 10·3 months [9·2-11·5]; HR 0·99, 0·84-1·16; p=0·88). A treatment interaction test assessing the difference in the HRs for overall survival between the EGFR expression groups suggested a predictive value for EGFR expression (p=0·044). INTERPRETATION High EGFR expression is a tumour biomarker that can predict survival benefit from the addition of cetuximab to first-line chemotherapy in patients with advanced NSCLC. Assessment of EGFR expression could offer a personalised treatment approach in this setting. FUNDING Merck KGaA.
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Affiliation(s)
- Robert Pirker
- Department of Medicine I, Medical University Vienna, Vienna, Austria.
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Rüschoff J, Kerr K, Büttner R, Olszewski W, Alves V, Grote H, Middel P, von Heydebreck A, Celik I, Störkel S. 9002 ORAL Round Robin Test to Evaluate the Reproducibility of a Therapeutically Relevant Immunohistochemical Score for the Categorization of Non-Small Cell Lung Cancer (NSCLC) Into Tumours With High and Low Epidermal Growth Factor Receptor (EGFR) Expression. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72314-0] [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: 10/17/2022]
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Sevinc A, Ozdogan M, Buyukberber S, Aydin F, Mandel N, Demir O, Gokmen E, Arpaci F, Paydas S, Celik I. 9317 POSTER MIPI-TURK – Multicentric Ipilimumab Experience in Turkish Patients With Metastatic Melanoma. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72526-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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O'Bvrne K, Paz-Ares L, Pereira J, von Pawel J, Ramlau R, Störkel S, Schumacher K, von Heydebreck A, Celik I, Pirker R. 9000 ORAL Epidermal Growth Factor Receptor (EGFR) Expression as a Predictive Biomarker of Survival in Patients With Advanced Non-Small Cell Lung Cancer (NSCLC) Receiving First-Line Therapy With Cetuximab Combined With Chemotherapy in the FLEX Trial. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72312-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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O'Byrne KJ, Gatzemeier U, Bondarenko I, Barrios C, Eschbach C, Martens UM, Hotko Y, Kortsik C, Paz-Ares L, Pereira JR, von Pawel J, Ramlau R, Roh JK, Yu CT, Stroh C, Celik I, Schueler A, Pirker R. Molecular biomarkers in non-small-cell lung cancer: a retrospective analysis of data from the phase 3 FLEX study. Lancet Oncol 2011; 12:795-805. [PMID: 21782507 DOI: 10.1016/s1470-2045(11)70189-9] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Findings from the phase 3 FLEX study showed that the addition of cetuximab to cisplatin and vinorelbine significantly improved overall survival, compared with cisplatin and vinorelbine alone, in the first-line treatment of EGFR-expressing, advanced non-small-cell lung cancer (NSCLC). We investigated whether candidate biomarkers were predictive for the efficacy of chemotherapy plus cetuximab in this setting. METHODS Genomic DNA extracted from formalin-fixed paraffin-embedded (FFPE) tumour tissue of patients enrolled in the FLEX study was screened for KRAS codon 12 and 13 and EGFR kinase domain mutations with PCR-based assays. In FFPE tissue sections, EGFR copy number was assessed by dual-colour fluorescence in-situ hybridisation and PTEN expression by immunohistochemistry. Treatment outcome was investigated according to biomarker status in all available samples from patients in the intention-to-treat population. The primary endpoint in the FLEX study was overall survival. The FLEX study, which is ongoing but not recruiting participants, is registered with ClinicalTrials.gov, number NCT00148798. FINDINGS KRAS mutations were detected in 75 of 395 (19%) tumours and activating EGFR mutations in 64 of 436 (15%). EGFR copy number was scored as increased in 102 of 279 (37%) tumours and PTEN expression as negative in 107 of 303 (35%). Comparisons of treatment outcome between the two groups (chemotherapy plus cetuximab vs chemotherapy alone) according to biomarker status provided no indication that these biomarkers were of predictive value. Activating EGFR mutations were identified as indicators of good prognosis, with patients in both treatment groups whose tumours carried such mutations having improved survival compared with those whose tumours did not (chemotherapy plus cetuximab: median 17·5 months [95% CI 11·7-23·4] vs 8·5 months [7·1-10·8], hazard ratio [HR] 0·52 [0·32-0·84], p=0·0063; chemotherapy alone: 23·8 months [15·2-not reached] vs 10·0 months [8·7-11·0], HR 0·35 [0·21-0·59], p<0·0001). Expression of PTEN seemed to be a potential indicator of good prognosis, with patients whose tumours expressed PTEN having improved survival compared with those whose tumours did not, although this finding was not significant (chemotherapy plus cetuximab: median 11·4 months [8·6-13·6] vs 6·8 months [5·9-12·7], HR 0·80 [0·55-1·16], p=0·24; chemotherapy alone: 11·0 months [9·2-12·6] vs 9·3 months [7·6-11·9], HR 0·77 [0·54-1·10], p=0·16). INTERPRETATION The efficacy of chemotherapy plus cetuximab in the first-line treatment of advanced NSCLC seems to be independent of each of the biomarkers assessed. FUNDING Merck KGaA.
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Bokemeyer C, Bondarenko I, Hartmann J, de Braud F, Schuch G, Zubel A, Celik I, Schlichting M, Koralewski P. Efficacy according to biomarker status of cetuximab plus FOLFOX-4 as first-line treatment for metastatic colorectal cancer: the OPUS study. Ann Oncol 2011; 22:1535-1546. [DOI: 10.1093/annonc/mdq632] [Citation(s) in RCA: 586] [Impact Index Per Article: 45.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abali H, Ata A, Ozdogan M, Turhal S, Cabuk D, Seyrek E, Senol Coskun H, Arik Z, Erman M, Celik I. Frequency of comorbid illnesses in cancer patients in Turkey. J BUON 2011; 16:557-560. [PMID: 22006766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PURPOSE Comorbidities in cancer patients can adversely affect the management and outcome of their primary illnesses at all levels from diagnosis to therapy. We sought to examine comorbid conditions of cancer patients, treated at 4 university hospitals, each representing a different geographic location in Turkey. METHODS A total of 769 consecutive cancer patients presenting to outpatient clinics were recruited between November 2007 and May 2008. The patients filled in a questionnaire on comorbidities. Based on the questionnaire, Charlson Comorbidity Index (CCI( was calculated. RESULTS The patient median age was 55 years (range 21-87) and 456 (59.3%) were female. Breast (36.5%), colorectal (21.4%) and lung cancers (13.9%) were the 3 most frequent malignancies. Of the patients, 59.3% had at least one comorbid disease and 46.3% were using at least one medication daily. The most frequent comorbidities were hypertension (25.3%), diabetes mellitus (13.1%) and peptic ulcer (7.7%). Increasing age positively correlated with the extent of comorbidities (r=0.30, p<0.001), number of medications (r=0.32, p<0.001) and the CCI (r=0.20, p<0.001). CONCLUSION It is crucial to remember that comorbid illnesses are not rare and many patients are treated for conditions unrelated to their cancer, which potentially may affect various stages of their clinical management.
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Affiliation(s)
- H Abali
- Baskent University School of Medicine, Department of Internal Medicine, Ankara, Turkey.
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Tejpar S, Bokemeyer C, Celik I, Schlichting M, Sartorius U, Van Cutsem E. Influence of KRAS G13D mutations on outcome in patients with metastatic colorectal cancer (mCRC) treated with first-line chemotherapy with or without cetuximab. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3511] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Van Cutsem E, Köhne CH, Láng I, Folprecht G, Nowacki MP, Cascinu S, Shchepotin I, Maurel J, Cunningham D, Tejpar S, Schlichting M, Zubel A, Celik I, Rougier P, Ciardiello F. Cetuximab Plus Irinotecan, Fluorouracil, and Leucovorin As First-Line Treatment for Metastatic Colorectal Cancer: Updated Analysis of Overall Survival According to Tumor KRAS and BRAF Mutation Status. J Clin Oncol 2011; 29:2011-9. [DOI: 10.1200/jco.2010.33.5091] [Citation(s) in RCA: 1452] [Impact Index Per Article: 111.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Purpose The addition of cetuximab to irinotecan, fluorouracil, and leucovorin (FOLFIRI) as first-line treatment for metastatic colorectal cancer (mCRC) was shown to reduce the risk of disease progression and increase the chance of response in patients with KRAS wild-type disease. An updated survival analysis, including additional patients analyzed for tumor mutation status, was undertaken. Patients and Methods Patients were randomly assigned to receive FOLFIRI with or without cetuximab. DNA was extracted from additional slide-mounted tumor samples previously used to assess epidermal growth factor receptor expression. Clinical outcome according to the tumor mutation status of KRAS and BRAF was assessed in the expanded patient series. Results The ascertainment rate of patients analyzed for tumor KRAS status was increased from 45% to 89%, with mutations detected in 37% of tumors. The addition of cetuximab to FOLFIRI in patients with KRAS wild-type disease resulted in significant improvements in overall survival (median, 23.5 v 20.0 months; hazard ratio [HR], 0.796; P = .0093), progression-free survival (median, 9.9 v 8.4 months; HR, 0.696; P = .0012), and response (rate 57.3% v 39.7%; odds ratio, 2.069; P < .001) compared with FOLFIRI alone. Significant interactions between KRAS status and treatment effect were noted for all key efficacy end points. KRAS mutation status was confirmed as a powerful predictive biomarker for the efficacy of cetuximab plus FOLFIRI. BRAF tumor mutation was a strong indicator of poor prognosis. Conclusion The addition of cetuximab to FOLFIRI as first-line therapy improves survival in patients with KRAS wild-type mCRC. BRAF tumor mutation is an indicator of poor prognosis.
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Affiliation(s)
- Eric Van Cutsem
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Claus-Henning Köhne
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - István Láng
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Gunnar Folprecht
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Marek P. Nowacki
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Stefano Cascinu
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Igor Shchepotin
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Joan Maurel
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - David Cunningham
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Sabine Tejpar
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Michael Schlichting
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Angela Zubel
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Ilhan Celik
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Philippe Rougier
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
| | - Fortunato Ciardiello
- From the University Hospital Gasthuisberg, Leuven, Belgium; Klinikum Oldenburg, Oldenburg; University Hospital Carl Gustav Carus, Dresden; Merck KGaA, Darmstadt, Germany; National Institute of Oncology, Budapest, Hungary; MSC Memorial Cancer Center, Warsaw, Poland; Università Politecnica delle Marche, Ancona; Second University of Naples, Naples, Italy; National Cancer Institute, Kiev, Ukraine; Hospital Clínic, Barcelona, Spain; The Royal Marsden National Health Services Foundation Trust, London, United
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Tejpar S, Bokemeyer C, Celik I, Schlichting M, Van Cutsem E. The role of the KRAS G13D mutation in patients with metastatic colorectal cancer (mCRC) treated with first-line chemotherapy plus cetuximab. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
630 Background: The CRYSTAL and OPUS studies showed that adding cetuximab (cet) to first-line chemotherapy (CT) significantly improved clinical benefit in patients (pts) with KRAS wild-type (wt) mCRC. Pts with KRAS codon 12 or 13 mutations are excluded from cet treatment. Studies suggest that not all KRAS mutations are equivalent in their biologic effects. Occasional responses and prolonged disease stabilization have been recorded following cet treatment of tumors with mainly KRAS codon 13 mutations. We investigated the influence of the most common KRAS codon 13 mutation (G13D) on clinical outcome compared with pts with other KRAS mutations or wt tumors in the CRYSTAL and OPUS trials. Methods: KRAS mutations were detected in tumor DNA from archival material using a PCR clamping and melting curve technique. Treatment arms were compared by KRAS mutation status for progression-free (PFS) and overall survival (OS). Results: In the CRYSTAL study of 1,063 evaluable pts 63% were KRAS wt, 6% were G13D mutant (mt) and 32% had other mutations. In the OPUS study of 315 evaluable pts, 57% were KRAS wt, 7% were G13D mt, and 36% had other mutations. Compared with KRAS wt pts those with G13D mutations did not benefit from the addition of cet to CT (Table). Data of comparisons of the G13D mutation with other KRAS mutations in these studies will be presented. Conclusions: Patients with KRAS G13D mt tumors did not appear to benefit from the addition of cet to first-line CT for mCRC. This analysis confirms the current practice of KRAS mutation testing as the standard diagnostic tool for determining first-line treatment of mCRC pts. [Table: see text] [Table: see text]
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Affiliation(s)
- S. Tejpar
- Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium; Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany; Merck KGaA, Darmstadt, Germany; Global Biostatistics, Global Clinical Operations, Merck KGaA, Darmstadt, Germany; University Hospital Gasthuisberg, Leuven, Belgium
| | - C. Bokemeyer
- Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium; Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany; Merck KGaA, Darmstadt, Germany; Global Biostatistics, Global Clinical Operations, Merck KGaA, Darmstadt, Germany; University Hospital Gasthuisberg, Leuven, Belgium
| | - I. Celik
- Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium; Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany; Merck KGaA, Darmstadt, Germany; Global Biostatistics, Global Clinical Operations, Merck KGaA, Darmstadt, Germany; University Hospital Gasthuisberg, Leuven, Belgium
| | - M. Schlichting
- Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium; Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany; Merck KGaA, Darmstadt, Germany; Global Biostatistics, Global Clinical Operations, Merck KGaA, Darmstadt, Germany; University Hospital Gasthuisberg, Leuven, Belgium
| | - E. Van Cutsem
- Digestive Oncology Unit, University Hospital Gasthuisberg, Leuven, Belgium; Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany; Merck KGaA, Darmstadt, Germany; Global Biostatistics, Global Clinical Operations, Merck KGaA, Darmstadt, Germany; University Hospital Gasthuisberg, Leuven, Belgium
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Onal U, Celik I, Tokşen E, Sepil A, Caydan E. Early infection of discus Symphysodon aequifasciatus altricial larvae by Sciadicleithrum variabilum (Monogenea). J Fish Biol 2011; 78:647-650. [PMID: 21284641 DOI: 10.1111/j.1095-8649.2010.02841.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The occurrence of Sciadicleithrum variabilum on the gills of discus Symphysodon aequifasciatus larvae 7 days after hatching is reported for the first time. This suggests that altricial larvae are susceptible to Monogenea following gill differentiation and before complete yolk resorption.
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Affiliation(s)
- U Onal
- Çanakkale Onsekiz Mart University, Fisheries Faculty, Department of Aquaculture, Terzioğlu Campus, 17100 Çanakkale, Turkey.
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Schädel-Höpfner M, Windolf J, Lögters TT, Hakimi M, Celik I. Flexor tendon repair using a new suture technique: a comparative in vitro biomechanical study. Eur J Trauma Emerg Surg 2011; 37:79-84. [PMID: 26814755 DOI: 10.1007/s00068-010-0019-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 07/25/2009] [Accepted: 01/30/2010] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The purpose of this experimental study was to evaluate the biomechanical characteristics of two new four-strand core suture techniques for flexor tendon repair. MATERIALS AND METHODS The two new suture techniques (Marburg 1, Marburg 2) are characterized by four longitudinal stitches which are anchored by a circular or semicircular suture. They were compared with three commonly used core suture techniques (modified Kessler, Tsuge, Bunnell). Fifty porcine flexor tendons were randomly assigned to one of the five core suture techniques. Outcome measures included ultimate tensile strength, maximum of lengthening, mode of failure and 1 mm gap formation force. RESULTS The highest ultimate tensile strength was found for the modified Kessler technique (115 N). Both new techniques showed an ultimate load exceeding 50 N (57 N for Marburg 1, 54 N for Marburg 2). The Marburg 1 technique showed the highest gap resistance of all tested suture techniques. The Bunnell and Tsuge core suture techniques produced the poorest mechanical performance. CONCLUSION From these experimental results, the new Marburg 1 core suture technique can be considered for flexor tendon repair in a clinical setting with the use of active motion protocols.
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Affiliation(s)
- M Schädel-Höpfner
- Department of Trauma and Hand Surgery, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany.
| | - J Windolf
- Department of Trauma and Hand Surgery, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - T T Lögters
- Department of Trauma and Hand Surgery, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - M Hakimi
- Department of Trauma and Hand Surgery, University Hospital, Moorenstraße 5, 40225, Düsseldorf, Germany
| | - I Celik
- Institute of Theoretical Surgery, University Hospital, Marburg, Germany
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Kurtoğlu F, Kurtoğlu V, Celik I, Keçeci T, Nizamlioğlu M. Effects of dietary boron supplementation on some biochemical parameters, peripheral blood lymphocytes, splenic plasma cells and bone characteristics of broiler chicks given diets with adequate or inadequate cholecalciferol (vitamin D3) content. Br Poult Sci 2010; 46:87-96. [PMID: 15835257 DOI: 10.1080/00071660400024001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
(1) The effects of 5 and 25 mg/kg boron supplementation of diets with inadequate (6.25 microg/kg) or adequate (50 microg/kg) cholecalciferol (vitamin D3) content on some biochemical parameters, tibia characteristics, peripheral blood lymphocyte and splenic plasma cell counts of broilers were investigated. (2) Supplementation of the diet with boron affected plasma concentrations of boron, iron, copper and zinc and also tibia boron, zinc and calcium concentrations but did not have any effect on tibia iron or copper concentrations or tibia ash and tibia weight values. (3) Boron supplementation caused significant increases in splenic plasma cell count but decreased the proximal and distal tibia growth plate widths. There was no effect of boron supplementation on peripheral blood alpha-naphthyl acetate esterase (ANAE) content. Whole blood haematocrit and haemoglobin counts were significantly increased by boron supplementation but there were no effects on leucocyte ratios such as eosinophil, basophil, monocyte, lymphocyte and thrombocyte. (4) In general, the findings of the present study support the hypothesis that boron has an important biological role that affects the mineral metabolism of animals by influencing both biochemical and haematological mechanisms.
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Affiliation(s)
- F Kurtoğlu
- Department of Biochemistry, University of Selçuk, Faculty of Veterinary Medicine, Kampüs, Konya, Turkey.
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