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Yilmaz F, Soyer N, Uslu R, Erdogan AP, Karaca B, Saydam G, Sahin F, Vural F. Retrospective analysis of patients with relapsed or refractory testicular nonseminous germ cell tumors treated with autologous stem cell transplantation. Indian J Cancer 2018; 54:415-420. [PMID: 29469069 DOI: 10.4103/ijc.ijc_284_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND AND AIM About 20-25% of the testicular germ cell tumors (TGCT) are relapsed or refractory after first line therapy and optimal treatment for this group is poorly defined. We aimed to analyze the efficacy and safety of autologous stem cell transplantation (ASCT) in this patient group.Material and. METHODS 19 patients with 28 ASCT were retrospectively analyzed. All the patients were treated with BEP (Bleomycin, etoposide, cisplatin) as first line therapy and TIP(paclitexalifosfamide, cisplatin) was given as salvage chemotherapy. Stem cell collection was performed with TIP and granulocyte stimulating factor. ASCT was performed with carboplatin(700mg/m2) and etoposite(750mg /m 2). The results were provided as median(min-max). P<0.05 was accepted as statistical significant level. RESULTS After ASCT, complete(CR) and partial remission (PR) rates were 47.3% and 31 .5% respectively. The median overall survival(OS) and progression free survival (PFS) were 18(0-37.4 months) and 7(0-15months) months respectively. Estimated 2-year OS was 47.4% and PFS was 35.3%. Grade 3/4 toxicities including diarrhea, mucositis, and toxic hepatitis were observed in 5 patients. Only one patient died due to complication of transplantation. CONCLUSION Although the number of the patients in this study is limited, ASCT seems to be a safe and effective treatment modality in relapsed refractory non-seminomatousTGCT with an acceptable OS, PFS and mortality rates.
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Affiliation(s)
- F Yilmaz
- Department of Hematology, Izmir Katip Celebi University, Ataturk Training and Research Hospital, Izmir, Turkey
| | - N Soyer
- Department of Hematology, Ege University Hospital, Izmir, Turkey
| | - R Uslu
- Department of Medical Oncology, Ege University Hospital, Izmir, Turkey
| | - A P Erdogan
- Department of Medical Oncology, Ege University Hospital, Izmir, Turkey
| | - B Karaca
- Department of Medical Oncology, Ege University Hospital, Izmir, Turkey
| | - G Saydam
- Department of Hematology, Ege University Hospital, Izmir, Turkey
| | - F Sahin
- Department of Hematology, Ege University Hospital, Izmir, Turkey
| | - F Vural
- Department of Hematology, Ege University Hospital, Izmir, Turkey
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Yurekli BS, Karaca B, Kisim A, Bozkurt E, Atmaca H, Cetinkalp S, Ozgen G, Yilmaz C, Uzunoglu S, Uslu R, Saygili F. AT-101 acts as anti-proliferative and hormone suppressive agent in mouse pituitary corticotroph tumor cells. J Endocrinol Invest 2018; 41:233-240. [PMID: 28730425 DOI: 10.1007/s40618-017-0733-8] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 07/12/2017] [Indexed: 01/19/2023]
Abstract
PURPOSE Gossypol, a naturally occurring compound in cottonseeds, has anticancer effects against several tumor cell lines. It has been extensively studied in clinical trials and is well tolerated with a favorable safety profile. AT-101, a derivative of R (-)-gossypol, binds to Bcl-2 family proteins and induces apoptosis in vitro. Although transsphenoidal surgical excision of the pituitary corticotroph adenoma is the gold standard of care, it is not successful all the time. Medical therapy for Cushing's disease still remains a challenge for the clinicians. We aimed to investigate the cytotoxic and apoptotic effects of AT-101 in mouse pituitary corticotroph tumor AtT20 cells. METHODS Cytotoxic effect of AT-101 was assessed by XTT cell viability assay. Apoptosis was shown by measuring DNA fragmentation and Caspase-3/7 activity. Changes in mRNA expressions of apoptosis-related genes were investigated by qPCR array after treatment with AT-101. ACTH was measured by ACTH-EIA Kit. RESULTS AT-101 induced cytotoxicity and apoptosis in AtT20 cells. mRNA levels of pro-apoptotic genes such as TNFR-SF-10B, Bid, PYCARD, Caspase-8, Caspase-3, and Caspase-7 were induced by 2.0-, 1.5-, 1.7-, 1.5-, 1.6-, and 2-fold, respectively, in AtT20 cells by AT-101 treatment. Moreover, some of the anti-apoptotic genes such as BCL2L10, NAIP1, and PAK-7 were reduced by 2.1-, 2.3-, 4.0-fold, respectively, in AtT20 cells. AT-101 also decreased ACTH secretion significantly. CONCLUSION AT-101 induces apoptosis in mouse pituitary corticotroph tumor cells.
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Affiliation(s)
- B S Yurekli
- Division of Endocrinology and Metabolism, Ege University School of Medicine, 35100, Izmir, Turkey.
| | - B Karaca
- Division Medical Oncology, Tulay Aktas Oncology Hospital, Ege University School of Medicine, 35100, Izmir, Turkey
| | - A Kisim
- Section of Molecular Biology, Department of Biology, Faculty of Science and Letters, Celal Bayar University, 45140, Muradiye/Manisa, Turkey
| | - E Bozkurt
- Section of Molecular Biology, Department of Biology, Faculty of Science and Letters, Celal Bayar University, 45140, Muradiye/Manisa, Turkey
| | - H Atmaca
- Section of Molecular Biology, Department of Biology, Faculty of Science and Letters, Celal Bayar University, 45140, Muradiye/Manisa, Turkey
| | - S Cetinkalp
- Division of Endocrinology and Metabolism, Ege University School of Medicine, 35100, Izmir, Turkey
| | - G Ozgen
- Division of Endocrinology and Metabolism, Ege University School of Medicine, 35100, Izmir, Turkey
| | - C Yilmaz
- Division of Endocrinology and Metabolism, Ege University School of Medicine, 35100, Izmir, Turkey
| | - S Uzunoglu
- Section of Molecular Biology, Department of Biology, Faculty of Science and Letters, Celal Bayar University, 45140, Muradiye/Manisa, Turkey
| | - R Uslu
- Division Medical Oncology, Tulay Aktas Oncology Hospital, Ege University School of Medicine, 35100, Izmir, Turkey
| | - F Saygili
- Division of Endocrinology and Metabolism, Ege University School of Medicine, 35100, Izmir, Turkey
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Ulusoy HB, Sonmez MF, Kilic E, Caliskan K, Karaca B, Kara M, Ercal O, Gunduz Y, Karabulut D, Bitiktas S, Tan B, Kavraal S, İnal A, Suer C. Intraperitoneal Administration of Low Dose Aluminium in The Rat: How Good is It to Produce a Model for Alzheimer Disease. Arch Ital Biol 2016; 153:266-78. [PMID: 27168412 DOI: 10.12871/00039829201543] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Since neurotoxicity of aluminium (Al) resembles the progressive neurodegeneration observed in Alzheimer Disease (AD), Al administration in several ways has been used to produce AD model. Intraperitoneal (ip) low dose (4.2 mg/ kg) Al injection in rats for long periods is the preferred method by some researchers. In this paper, the efficiency of this method for producing an AD model was evaluated. In this study, we looked at the neuropathology of Al and the characteristic lesions of AD by histological and immunohistochemical techniques and determined oxidative stress markers in the brains of Al-treated and control rats. We also made electrophysiological recordings at the hippocampus and evaluated possible behavioural changes by Morris water maze test. However, no pathologic changes occurred in the animals except for an impairment in long-term potentiation (LTP) in the hippocampus (e.g. the LTPs of population spike (PS) amplitude at 15 min post-tetanus were measured as 217±27% in Al-treated rats and as 240±42% in sham-treated rats, of baseline PS amplitude). According to the findings of the present study, low dose of ip Al in rats is not sufficient to produce a good AD model. Higher doses (≥10 mg/kg) should be used.
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Batirel A, Erdem H, Sengoz G, Pehlivanoglu F, Ramosaco E, Gülsün S, Tekin R, Mete B, Balkan II, Sevgi DY, Giannitsioti E, Fragou A, Kaya S, Cetin B, Oktenoglu T, Celik AD, Karaca B, Horasan ES, Ulug M, Senbayrak S, Kaya S, Arslanalp E, Hasbun R, Ates-Guler S, Willke A, Senol S, Inan D, Güclü E, Ertem GT, Koc MM, Tasbakan M, Ocal G, Kocagoz S, Kusoglu H, Güven T, Baran AI, Dede B, Karadag FY, Yilmaz H, Aslan G, Al-Gallad DA, Cesur S, El-Sokkary R, Sirmatel F, Savasci U, Karaahmetoglu G, Vahaboglu H. The course of spinal tuberculosis (Pott disease): results of the multinational, multicentre Backbone-2 study. Clin Microbiol Infect 2015; 21:1008.e9-1008.e18. [PMID: 26232534 DOI: 10.1016/j.cmi.2015.07.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/20/2015] [Accepted: 07/21/2015] [Indexed: 01/09/2023]
Abstract
We aimed to describe clinical, laboratory, diagnostic and therapeutic features of spinal tuberculosis (ST), also known as Pott disease. A total of 314 patients with ST from 35 centres in Turkey, Egypt, Albania and Greece were included. Median duration from initial symptoms to the time of diagnosis was 78 days. The most common complications presented before diagnosis were abscesses (69%), neurologic deficits (40%), spinal instability (21%) and spinal deformity (16%). Lumbar (56%), thoracic (49%) and thoracolumbar (13%) vertebrae were the most commonly involved sites of infection. Although 51% of the patients had multiple levels of vertebral involvement, 8% had noncontiguous involvement of multiple vertebral bodies. The causative agent was identified in 41% of cases. Histopathologic examination was performed in 200 patients (64%), and 74% were consistent with tuberculosis. Medical treatment alone was implemented in 103 patients (33%), while 211 patients (67%) underwent diagnostic and/or therapeutic surgical intervention. Ten percent of the patients required more than one surgical intervention. Mortality occurred in 7 patients (2%), and 77 (25%) developed sequelae. The distribution of the posttreatment sequelae were as follows: 11% kyphosis, 6% Gibbus deformity, 5% scoliosis, 5% paraparesis, 5% paraplegia and 4% loss of sensation. Older age, presence of neurologic deficit and spinal deformity were predictors of unfavourable outcome. ST results in significant morbidity as a result of its insidious course and delayed diagnosis because of diagnostic and therapeutic challenges. ST should be considered in the differential diagnosis of patients with vertebral osteomyelitis, especially in tuberculosis-endemic regions. Early establishment of definitive aetiologic diagnosis and appropriate treatment are of paramount importance to prevent development of sequelae.
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Affiliation(s)
- A Batirel
- Dr Lutfi Kirdar Training and Research Hospital, Istanbul, Turkey
| | - H Erdem
- Gulhane Medical Academy, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey.
| | - G Sengoz
- Haseki Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - F Pehlivanoglu
- Haseki Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - E Ramosaco
- Infectious Diseases Hospital, University Hospital Center "Mother Teresa", Tirana, Albania
| | - S Gülsün
- Diyarbakir Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Diyarbakir, Turkey
| | - R Tekin
- Dicle University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Diyarbakir, Turkey
| | - B Mete
- Istanbul University Cerrahpasa School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - I I Balkan
- Istanbul University Cerrahpasa School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - D Y Sevgi
- Sisli Etfal Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - E Giannitsioti
- Department of Internal Medicine, Athens University Medical School, Attikon University General Hospital, Athens, Greece
| | - A Fragou
- Department of Internal Medicine, Athens University Medical School, Attikon University General Hospital, Athens, Greece
| | - S Kaya
- Karadeniz Technical University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Trabzon, Turkey
| | - B Cetin
- Koc University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - T Oktenoglu
- Koc University School of Medicine, Department of Neurosurgery, Istanbul, Turkey
| | - A D Celik
- Trakya University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Edirne, Turkey
| | - B Karaca
- Izmir Bozyaka Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - E S Horasan
- Mersin University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Mersin, Turkey
| | - M Ulug
- Private Umit Hospital, Department of Infectious Diseases and Clinical Microbiology, Eskisehir, Turkey
| | - S Senbayrak
- Haydarpasa Numune Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - S Kaya
- Diyarbakir Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Diyarbakir, Turkey
| | - E Arslanalp
- Kocaeli University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Kocaeli, Turkey
| | - R Hasbun
- The University of Texas Health Science Center at Houston, Medical School, Department of Infectious Diseases, Turkey
| | - S Ates-Guler
- Sutcu Imam University, School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Kahramanmaras, Turkey
| | - A Willke
- Kocaeli University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Kocaeli, Turkey
| | - S Senol
- Celal Bayar University, School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Manisa, Turkey
| | - D Inan
- Akdeniz University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Antalya, Turkey
| | - E Güclü
- Sakarya University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Sakarya, Turkey
| | - G T Ertem
- Ankara Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - M M Koc
- Kocaeli University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Kocaeli, Turkey
| | - M Tasbakan
- Ege University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Izmir, Turkey
| | - G Ocal
- Dr Lutfi Kirdar Training and Research Hospital, Istanbul, Turkey
| | - S Kocagoz
- Acibadem University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Kusoglu
- Acibadem University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - T Güven
- Ankara Atatürk Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - A I Baran
- Yuzuncuyil University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Van, Turkey
| | - B Dede
- Umraniye Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - F Y Karadag
- Medeniyet University, Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Yilmaz
- Ondokuz Mayis University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Samsun, Turkey
| | - G Aslan
- Diskapi Yildirim Beyazit Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | | | - S Cesur
- Ankara Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - R El-Sokkary
- Medical Microbiology and Immunology, Infection Control Unit, Zagazig University, Zagazig, Egypt
| | - F Sirmatel
- Izzet Baysal University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, Bolu, Turkey
| | - U Savasci
- Gulhane Medical Academy, Department of Infectious Diseases and Clinical Microbiology, Ankara, Turkey
| | - G Karaahmetoglu
- GATA Haydarpasa Training Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
| | - H Vahaboglu
- Medeniyet University, Goztepe Training and Research Hospital, Department of Infectious Diseases and Clinical Microbiology, Istanbul, Turkey
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Karaca B, Surmeli Z, Erdoğan A, Sanli U, Sezgin C, Uslu R. Prognostic Effect of Primary Tumor Characteristics in Metastatic Melanoma. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu344.37] [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: 11/12/2022] Open
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Dirican A, Atmaca H, Bozkurt E, Erten C, Karaca B, Uslu R. Novel combination of docetaxel and thymoquinone induces synergistic cytotoxicity and apoptosis in DU-145 human prostate cancer cells by modulating PI3K-AKT pathway. Clin Transl Oncol 2014; 17:145-51. [PMID: 25060568 DOI: 10.1007/s12094-014-1206-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 07/09/2014] [Indexed: 12/15/2022]
Abstract
BACKGROUND The treatment of castrate-resistant prostate cancer (CRPC) still remains as an important challenge of daily oncology practice. Docetaxel significantly prolongs overall survival in men with CRPC. Thymoquinone (TQ), one of the flavonoid compounds isolated from Nigealla sativa, has been shown to possess cytotoxic activity against a variety of cancer cell lines. MATERIALS AND METHODS The aim of the study was to investigate the possible synergistic cytotoxic/apoptotic effects of a novel combination, docetaxel and TQ in DU-145 hormone- and drug-refractory prostate cancer cells and their effects on PI3K and ERK signaling pathways. RESULTS We observed that the combination of docetaxel and TQ resulted in a significant synergistic cytotoxicy and apoptosis as compared to any single agent alone, in a dose-dependent manner. It was found that viability of the combination treated cells was not significantly changed in the presence of LY294002 as compared to inhibitor treated cells. However, in the presence of FR180204, viability of combination treated cells was significantly decreased as compared to inhibitor treated cells. In conclusion, cytotoxic effect of the docetaxel and TQ combination is correlated with the block of the PI3K/Akt signaling pathway in DU-145 cells. CONCLUSION Therefore, this combination strategy may be an alternative approach for the challenging era of daily oncologic practice. Also, the combination of docetaxel and TQ might allow a reduction in docetaxel doses and diminish adverse effects of docetaxel while maintaining the therapeutic effect in patients with CRPC.
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Affiliation(s)
- A Dirican
- Department of Medical Oncology, Izmir Katip Celebi University Ataturk Training and Research Hospital, 35360, Izmir, Turkey,
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Cakar B, Karaca B, Uslu R. Sexual dysfunction in cancer patients: a review. J BUON 2013; 18:818-823. [PMID: 24344003] [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
Cancer is a life-threatening disease despite the advanced therapeutic strategies now available. A common problem is that physicians and patients tend to concentrate on intensive medical treatment options and underestimate the treatment-related adverse effects. In this review, we summarize one of these adverse effects in cancer patients; sexual dysfunction (SD). In addition, current therapeutic choices with optimal doses and patient selection strategies are defined. All patients should be informed about problems associated with therapy-related SD and must be guided toward the most appropriate therapeutic options before starting treatment.
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Affiliation(s)
- B Cakar
- Ege University Schhol of Medicine, Tulay Aktas Oncology Hospital, Bornova, Izmir, Turkey
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Varol U, Cirak Y, Cakar B, Karaca B, Sezgin C, Uslu R, Karabulut B. Survival analysis of metastatic colorectal cancer patients who were treated with the five major therapeutic agents over the course of disease. J BUON 2013; 18:647-652. [PMID: 24065478] [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: 06/02/2023]
Abstract
PURPOSE Exposure to all active agents may be more important than specific sequence of drug administration in the treatment of patients with metastatic colorectal cancer (mCRC). The purpose of this study was to evaluate the overall survival (OS) of mCRC patients who were treated with all 5 major therapeutic agents used in this malignancy. METHODS We retrospectively reviewed the medical records of 395 mCRC patients referred to our clinic. The study included patients who received 5-fluorouracil (5-FU)-, irinotecan- or oxaliplatin-based chemotherapy and at least 3 cycles of bevacizumab and 4 weeks of cetuximab sequentially in various combinations. RESULTS Forty mCRC patients received the 5 major therapeutic agents effectively and sequentially, and their mean OS was 26.43±2.04 months. The 3- and 4- year OS survival rates were 26.7% and 16.7%, respectively. When survival analysis was limited to the metastatic patients with at least 6 cycles of bevacizumab therapy in addition to standard duration of other chemotherapeutic agents (N=33), the mean OS was 26.7±2.38 months. With a further survival analysis limited to metastatic patients who were treated with at least both 6 cycles of bevacizumab and 8 weeks of cetuximab in addition to other therapies (N=17), the mean OS was 44.8±11.03 months. CONCLUSION This study demonstrated that in mCRC patients there may be a significant survival advantage if an adequate tumor response was achieved with all major therapeutic agents. Therefore, we believe that we should treat our patients with the 5 major therapeutic drugs as effectively as possible.
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Affiliation(s)
- U Varol
- Department of Medical Oncology, Mugla University Research and Training Hospital, Mugla, Turkey
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Ergun M, Eyigor S, Karaca B, Kisim A, Uslu R. Effects of exercise on angiogenesis and apoptosis-related molecules, quality of life, fatigue and depression in breast cancer patients. Eur J Cancer Care (Engl) 2013; 22:626-37. [PMID: 23731173 DOI: 10.1111/ecc.12068] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2013] [Indexed: 12/13/2022]
Abstract
The aim of this study was to explore the effects of exercise on angiogenesis and apoptosis-related molecules, quality of life, fatigue and depression in patients who completed breast cancer treatment. Sixty breast cancer patients were randomised into three groups, as supervised exercise group, home exercise group and education group. Angiogenesis and apoptosis-related cytokine levels and quality of life (EORTC QOL-C30: European Organisation for Research and Treatment of Cancer Quality of Life C30), fatigue (Brief Fatigue Inventory) and depression (BDI: Beck Depression Inventory) scores were compared before and after a 12-week exercise programme. After the exercise programme, statistically significant decreases were found in interleukin-8 and neutrophil activating protein-78 levels in the home exercise group (P < 0.05). The education group showed a statistically significant increase in monocyte chemoattractant protein-1 level (P < 0.05). Functional score and global health score of EORTC QOL-C30 in the supervised exercise group and functional score of EORTC QOL-C30 in the home exercise group increased significantly after exercise programme (P < 0.05). BDI score was significantly lower in the supervised exercise group after the exercise programme (P < 0.05). Changes in angiogenesis and apoptosis-related molecules in the study groups suggest a possible effect of exercise on these parameters. Exercise programmes are safe and effective on quality of life and depression in breast cancer patients whose treatments are complete.
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Affiliation(s)
- M Ergun
- Physical Therapy and Rehabilitation Department, Ege University Faculty of Medicine, İzmir, Turkey
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Cakar B, Bulut G, Kisim A, Bozkurt E, Atmaca H, Uzunoglu S, Uslu R, Karaca B. AT-101 (-/- Gossypol) in Combination with Trastuzumab Triggers Apoptosis Through Inhibiting BCL-2, BCL-XL AND MCL-1 Protein Levels in Human HER2-Positive Breast Cancer Cells. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt086.1] [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: 11/12/2022] Open
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Karaca B, Yasdik H, Surmeli Z, Gursoy P, Karabulut B, Sezgin C, Sanli U, Uslu R. Interpreting Genomic Diversity for Breast Cancer: Molecular Subtypes of Breast Cancer in Very Young Women (≤35 Y) in Western Turkey. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt078.5] [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: 11/12/2022] Open
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Cakar B, Varol U, Junushova B, Muslu U, Gursoy Oner P, Gokhan Surmeli Z, Cirak Y, Karaca B, Sezgin C, Karabulut B, Uslu R. Evaluation of the efficacy of adjuvant chemotherapy in patients with high-risk stage II colon cancer. J BUON 2013; 18:372-376. [PMID: 23818348] [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: 06/02/2023]
Abstract
PURPOSE This study aimed at comparing the disease-free survival (DFS) in high-risk TNM stage II colon cancer patients who had been subjected to adjuvant chemotherapy and TNM low-risk stage II patients who did not receive chemotherapy. METHODS We retrospectively reviewed the medical records of stage II colon cancer patients between January 2006 and December 2011. High-risk patients were defined those with any colonic obstruction/perforation, mucinous histology, inadequate lymph node sampling, T4 disease, lymphatic/ vascular or perineural invasion, preoperatively elevated carcinoembryonic antigen (CEA) and high-grade tumor. All patients with high-risk features received adjuvant chemotherapy. RESULTS There were 42 patients in the high-risk treatment group and 21 patients in the non-treatment (observation) group. There were no significant differences in terms of gender, tumor size, tumor localization, or the number of excised lymph nodes between the groups. The median follow- up time was 33.9 months in the treatment group and 29.3 months in the non-treatment group. Recurrence developed in 4 patients (6.3%), 3 of which were in the treatment group. DFS in both groups was statistically similar. CONCLUSION Adjuvant chemotherapy in the high-risk patients resulted in similar DFS as that in the low-risk patients. Although the role of adjuvant chemotherapy for stage II colon cancer is unclear, it is rational to offer adjuvant chemotherapy to patients with high-risk stage II colon cancer.
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Affiliation(s)
- B Cakar
- Tulay Aktas Oncology Hospital, Ege University School of Medicine, Izmir, Turkey
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Robichon C, Annereau JP, Gomes B, Pillon A, de Vries L, Cussac D, Meyer N, Lamant L, Kruczynski A, Guilbaud N, Kluza J, Jendoubi M, Corazao-Rozas P, Andre F, Jonneaux A, Guerreschi P, Formstecher P, Mortier L, Marchetti PHI, Bozkurt E, Atmaca H, Uzunoglu S, Uslu R, Karaca B, Erenpreisa J, Jackson TR, Huna A, Salmina K, Innashkina I, Jankevics E, Townsend PA, Cragg MS, Atmaca H, Bozkurt E, Uzunoglu S, Uslu R, Karaca B, Ramos SP, Bin M, Neto MDS, Curvello R, de Souza ACS, Nunes M, Weiswald LB, Vrignaud P, Vacher S, Turlotte E, Richon S, Roman-Roman S, Bieche I, Dangles-Marie V, Morais-Santos F, Pinheiro C, Vieira A, Schmitt F, Paredes J, Baltazar F, Zhang T, Lee YW, Rui YF, Cheng TY, Li G, Sreelatha KH, Reshma RS, Veena S, Rakesh SN, Thara S, Jem P, Priya S, Veena S, Sreelatha KH, Reshma RS, Rakesh SN, Priya S. Poster session 5. Translational research. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt047] [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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14
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Bozkurt E, Atmaca H, Uzunoglu S, Uslu R, Karaca B. P53 Modulates Trabectedin Mediated Cytotoxicity in Glioblastoma Multiforme Cells (U-87MG and T98G). Ann Oncol 2013. [DOI: 10.1093/annonc/mdt047.3] [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: 11/12/2022] Open
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15
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Atmaca H, Bozkurt E, Uzunoglu S, Uslu R, Karaca B. A Diverse Induction of Apoptosis by Trabectedin in MCF-7 (HER2-/ER+) and MDA-MB-453 (HER2 + /ER-) Breast Cancer Cells. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt047.5] [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: 11/13/2022] Open
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16
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Karaca B, Muslu U, Surmeli Z, Cakar B, Atmaca H, Asli K, Sezgin C, Uzunoglu S, Karabulut B, Uslu R. 98P Octreotide in Combination with Docetaxel Triggers Apoptosis by Inducing Sstr2 and Sstr5 Levels in Human Breast Cancer Cells, Mcf-7 and Mda-Mb-231. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65742-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: 11/26/2022] Open
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17
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Karaca B, Atmaca H, Asli K, Bozkurt E, Cakar B, Surmeli Z, Gursoy P, Karabulut B, Uzunoglu S, Sezgin C. 94P Comparison of A Novel, Label-Free, and Real-Time cell Based System (Xcelligence) With a Conventional Viability Assay (Xtt) to Determine the Anti-Proliferative Effect of At-101 in Human Breast Cancer Cells. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65737-6] [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: 10/25/2022] Open
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18
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Surmeli Z, Gursoy P, Cakar B, Asli K, Atmaca H, Sezgin C, Karabulut B, Uslu R, Karaca B. 99P Zoledronic Acid in Combination with Serine/Threonine Phosphatase Inhibitors Induces Cytotoxicity and Apoptosis in Human Breast Cancer Cells via Decreasing the Activities of Pp1 and Pp2A. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65743-1] [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: 10/25/2022] Open
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19
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Karaca B, Bozacı E, Demir A, Ozdogan E, Seventekin N. Effects of enzymatic treatments on surface morphology and chemical structure of linen fabrics. J Appl Polym Sci 2011. [DOI: 10.1002/app.35359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Cakar B, Muslu U, Karaca B, Junushova B, Uslu R, Goker E. Alveolar rhabdomyosarcoma originating from the uterine cervix. EUR J GYNAECOL ONCOL 2011; 32:196-198. [PMID: 21614913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Cervical alveolar rhabdomyosarcoma is a rare condition associated with poor prognosis. An 18-year-old patient presented with vaginal bleeding and a protruding mass from the vagina. Biopsy of the mass revealed alveoler rhabdomyosarcoma (ARMS), and radiological evaluation demonstrated that it originated from the uterine cervix. First, Wertheim's operation was carried out followed by four cycles of vincristine, actinomycine-D, ifosfamide (VAI) chemotherapy. However, the disease relapsed within three months, and the patient died of disease progression. Despite combination treatment, we could not achieve a desirable survival advantage in ARMS. Future studies may unveil the genomic profile of this rare condition, leading to invention of targeted therapies, which is the emerging trend in the treatment of sarcomas.
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Affiliation(s)
- B Cakar
- Division of Medical Oncology, Tulay Aktas Oncology Hospital, School of Medicine, Ege University, Izmir, Turkey.
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21
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Akagunduz O, Karaca B, Atmaca H, Uzunoglu S, Karabulut B, Sanli UA, Haydaroglu A, Uslu R. Radiosensitization of hormone-refractory prostate cancer cells by gossypol treatment. J BUON 2010; 15:763-767. [PMID: 21229643] [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: 05/30/2023]
Abstract
PURPOSE many drugs have been tested to increase the sensitivity of prostate cancer cells to radiotherapy. Gossypol, a natural polyphenolic compound extracted from the cotton plant, is one of the agents the efficacy of which has been investigated in the treatment of prostate cancer for this purpose. The main aim of this study was to investigate the best gossypol application with irradiation, when gossypol was applied either sequentially (24 h before and after irradiation) or concurrently in PC-3 hormone-refractory and radioresistant prostate cancer cells. METHODS The XTT viability assay was used to evaluate the cytotoxicity of different concentrations of gossypol in PC- 3 cells. Irradiation was applied to PC-3 cells via 6 MV photon linear accelerator and delivered 24 h before, 24 h after radiation or at the same time with gossypol administration. RESULTS gossypol caused radiosensitization of PC-3 cells that are known to be radioresistant, with high Bcl-2 levels. Among different applications of gossypol and irradiation (before, after and concurrent) in prostate cancer cells, the best results were observed by the application of gossypol 24 h before irradiation. CONCLUSION our study suggests that gossypol represents a promising novel anticancer treatment for radiosensitization of human hormone-refractory prostate cancer cells.
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Affiliation(s)
- O Akagunduz
- Division of Radiation Oncology, School of Medicine, Ege University, Bornova, Izmir, Turkey
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22
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Uslu R, Kapkac M, Karaca B, Camyar H, Durusoy R, Ozdemir N, Aras AB, Oktay A, Ozkilic H, Yilmaz R. Screening for metastasis in primary breast cancer patients having four or more axillary lymph node involvement: is it really necessary? J BUON 2010; 15:561-567. [PMID: 20941828] [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: 05/30/2023]
Abstract
PURPOSE To evaluate the necessity and direct cost effectiveness of screening and staging procedures in breast cancer patients having ≥4 positive axillary lymph nodes and to identify further possible biopathological risk factors associated with increased risk of metastasis. METHODS We reviewed the demographic and clinicopathological data from the medical records of 1897 newly diagnosed breast cancer patients. Patients having ≥4 positive axillary lymph nodes after primary surgery for breast cancer and who had staging examinations for metastasis were eligible. The impact of staging procedures (thoracoabdominal CT, bone scan etc.) for detecting metastasis, decision of adjuvant treatment and direct costs were analyzed in 329 patients with operable breast cancer. RESULTS Thirty-five (10.6%) patients were found with metastasis at diagnosis. Seven (20.0%) among them had multiple metastases. Eighteen (51.4%) had lung, 17 (48.6%) bone, and 7 (20.0%) liver metastasis. Twenty-one (60.0%) patients needed further radiological investigation for metastasis confirmation. Treatment decision was changed in 27 (77.1%) patients. No statistically significant risk factor was identified among the metastatic patients by means of conventional demographic and biopathological parameters. The cost of screening was lower when compared to the cost of treatment without any screening procedure. CONCLUSION Since the conventional clinicopathological data seems not sufficient to define the risk of developing metastasis in breast cancer patients with ≥4 axillary lymph node involvement, all of them should undergo full staging examinations until new parameters based on genomic level are defined. Staging procedures need modification for high risk breast cancer patients.
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Affiliation(s)
- R Uslu
- Tulay Aktas Oncology hospital, Department of Medical Oncology, School of Medicine, Ege University, Bornova, Izmir, Turkey.
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23
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Eyigor C, Karaca B, Kuzeyli-Yildirim Y, Uslu R, Uyar M, Coker A. Does the tumor localization in advanced pancreatic cancer have an influence on the management of symptoms and pain? J BUON 2010; 15:543-546. [PMID: 20941825] [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: 05/30/2023]
Abstract
PURPOSE The symptoms and survival of patients with advanced pancreatic cancer show great variability according to tumor localization. The main purpose of this study was to see for any differences between the intensity of symptoms, mainly pain, and the need for analgesic treatment in advanced pancreatic cancer patients with different (head vs. body-tail) tumor localizations. METHODS Ninety-six patients with histologically confirmed pancreatic cancer were enrolled in the study. The patients were divided into 2 subgroups according to tumor localization: group 1 (n=50) with head tumors and group 2 (n=46) with body and tail tumors. The demographic features of the patients as well as disease stages, onset of symptoms and necessity and consumption of analgesics were recorded. Patients were followed-up until death, and survival data was also analysed. RESULTS At the time of diagnosis, patients with body and tail tumors had more advanced disease stages compared to head tumors (p=0.006). While jaundice was the most common initial symptom in head tumors (p<0.0001), it was pain in body and tail tumors (p<0.001). Patients with body and tail tumors had more analgesics consumption as compared to those with head tumors (p=0.009). No statistically significant difference in survival was detected between the 2 groups (p>0.05). CONCLUSION We believe that pancreatic cancer should be accepted as two diverse disease types according to tumor localization, and pain and symptom management should be organized based on this fact.
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Affiliation(s)
- C Eyigor
- Ege University Faculty of Medicine, Anesthesiology Department, Pain Clinic, and Tulay Aktas Oncology Hospital, Izmir, Turkey.
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24
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Bilgir O, Kebapcilar L, Bilgir F, Sarì I, Oner P, Karaca B, Alacacioglu I. Is there any relationship between imatinib mesylate medication and hypothalamic-pituitary-adrenal axis dysfunction? Int J Clin Pract 2010; 64:45-50. [PMID: 20089016 DOI: 10.1111/j.1742-1241.2008.01856.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND Imatinib mesylate [tyrosine kinase (TK) inhibitor] is a novel medication in the treatment of chronic myelogenous leukaemia (CML). TK is also essential in hypothalamo-pituitary-adrenal (HPA) axis. PURPOSE The aim of this study was to evaluate HPA axis in patients treated with imatinib. Twenty-five patients were included in this study. METHODS Glucagon stimulation test (GST) and low-dose (1 microg) adrenocorticotropin test (LDSST) were used to assess the HPA gland axis. RESULTS Seventeen (68%) subjects had impaired peak response when a cortisol cut-off value is accepted as 500 nmol/L. Twelve (48%) out of 17 subjects also failed to show a response to LDSST. Therefore, 12 patients (48%) were defined as HPA deficient. Only two of these 25 patients had morning serum cortisol < 200 nmol/l (7.22 microg/dl), and failed the GST and/or LDSST, indicating that the majority had partial glucocorticoid deficiency. If the cut-off presume for LDSST is from 500 to 600 nmol/l, 16 patients (64%) would have failed both the GST and LDSST. CONCLUSION Our results indicate an increased prevalence of subclinical glucocorticoid deficiency in patients receiving imatinib mesylate for CML. Therefore under stressed conditions, such as intercurrent illness state, overt and untreated partial glucocorticoid deficiency in CML patients become life threatening.
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Affiliation(s)
- O Bilgir
- Internal Medicine Department, Bozyaka Training and Research Hospital, Izmir, Turkey
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25
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Kebapcilar L, Bilgir O, Alacacioglu A, Yildiz Y, Taylan A, Gunaydin R, Yuksel A, Karaca B, Sari I. Impaired hypothalamo-pituitary-adrenal axis in patients with ankylosing spondylitis. J Endocrinol Invest 2010; 33:42-7. [PMID: 19620823 DOI: 10.1007/bf03346548] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND To investigate the hypothalamic-pituitary- adrenal (HPA) axis in patients with ankylosing spondylitis (AS) and healthy controls. METHODS Forty-nine AS patients and 20 healthy controls were included. Lowdose ACTH test (LDST) was used to assess the HPA axis. Basal cortisol, stimulated peak cortisol levels, and acutephase reactants [C-reactive protein (CRP), erythrocyte sedimentation rate, and fibrinogen] were studied. Bath Ankylosing Spondylitis Functional Index, Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), and Bath Ankylosing Spondylitis Metrology Index were also evaluated. RESULTS Patient and control groups were not different regarding age, sex, body mass index and waist circumference (WC). Basal cortisol levels did not show a significant difference between groups. However, cortisol increment after low-dose ACTH was significantly impaired in AS subjects with respect to controls (20.0+/-4.4 vs 24+/-2.2 microg/dl, p<0.001). Eleven AS patients had impaired cortisol peak after LDST when a cortisol cut-off is accepted as 500 nmol/l (18 microg/dl) and none of the controls exhibited a peak cortisol responses to LDST<500 nmol/l. Comparison of AS subjects who were receiving anti-tumor necrosis factor (TNF) (no.=23), and conventional therapy (no.=26) yielded similar basal and peak cortisol concentrations. Peak cortisol concentrations were associated with basal cortisol, impaired cortisol response, CRP, and fibrinogen. Impaired cortisol response (subjects with peak cortisol levels <18 microg/dl) was significantly correlated with basal and peak cortisol concentrations and BASDAI. CONCLUSION Our results indicate an increased prevalence of subclinical glucocorticoid deficiency in AS patients. Anti-TNF treatment seems not to have effect on HPA axis.
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Affiliation(s)
- L Kebapcilar
- Department of Internal Medicine, Izmir Bozyaka Training and Research Hospital, Izmir, Turkey
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Varol U, Karaca B, Tunali D, Degirmenci M, Cirak Y, Purcu DU, Uzunoglu S, Sezgin C, Karabulut B, Sanli UA, Uslu R. The effect of racemic gossypol and at-101 on angiogenic profile of ovcar-3 cells: a preliminary molecular framework for gossypol enantiomers. Exp Oncol 2009; 31:220-225. [PMID: 20010531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
AIM To compare the effect of racemic gossypol with its (-)/(-) enantiomer (AT-101) on expression profiles of angiogenic molecules by mRNA levels in human ovarian cancer cell line OVCAR-3. METHODS Cell viability assay (2,3-bis (2-methoxy-4-nitro-5- sulfophenyl)-5-[(phenylamino) carbonyl]-2H-tetrazolium hydroxide) was used to detect cytotoxicity of gossypol enantiomers. DNA fragmentation by an enzyme-linked immunosorbent (ELISA) assay was used to evaluate the rate of apoptosis. The mRNA expression levels of angiogenic molecules were investigated by Human Angiogenesis RT2 ProfilerTM PCR Array (SuperArray, Frederick, MD). RESULTS Both racemic form and AT-101 resulted in a significant cytotoxicity and induced apoptosis. This effect was observed in a dose- and time dependent manner. However, AT-101 was much more potent. In addition, the treatment of 10 microM of racemic gossypol alone and 3 microM of AT-101 alone resulted in significant down-regulation (>or= 3 fold) in mRNA levels of some pivotal angiogenic molecules in OVCAR-3, but altered gene profiles were different by the treatment of each enantiomer. CONCLUSION The efficacy of two gossypol enantiomers in OVCAR-3 cells showed distinction. AT-101 was much more potent than racemic gossypol, not only by means of cell death and apoptosis, but also by modulation of angiogenic molecules released from OVCAR-3 cells. Further studies with endothelial cells should be done to verify the anti-angiogenic effect of gossypol enantiomers in cancer treatment.
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Affiliation(s)
- U Varol
- Division of Medical Oncology, Tulay Aktas Oncology Hospital, School of Medicine, Ege University, 35100 Bornova, Izmir, Turkey
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Karaca B, Atmaca H, Uzunoglu S, Karabulut B, Sanli UA, Uslu R. Enhancement of taxane-induced cytotoxicity and apoptosis by gossypol in human breast cancer cell line MCF-7. J BUON 2009; 14:479-485. [PMID: 19810142] [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: 05/28/2023]
Abstract
PURPOSE Gossypol is a natural polyphenolic compound extracted from cotton plant (Gossypium species) which has shown potent inhibitory effect on cell growth of many types of cancers. In this study, we aimed to evaluate the interaction of gossypol with some conventional drugs known to be effective in the treatment of breast cancer, like taxanes, doxorubicin, gemcitabine, cisplatin and vinorelbine, in MCF-7 breast cancer cells. MATERIALS AND METHODS The XTT viability assay was used to evaluate the cytotoxicity of various cytotoxic agents alone and in combination with gossypol in MCF-7 breast cancer cells. The combination effect analysis of Chou and Talalay was used to identify the most synergistic drug combinations. The possible synergistic effects of the combination of drugs on apoptosis were also evaluated by using two different apoptosis assays. RESULTS We identified strong synergistic cytotoxic and apoptotic activity of gossypol with taxanes among all other studied cytotoxic drugs. CONCLUSION This study provides proof that gossypol combined with taxanes may have potential as a novel future treatment for breast cancer.
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Affiliation(s)
- B Karaca
- Division of Medical Oncology, Tulay Aktas Oncology Hospital, School of Medicine, Ege University, Bornova, Izmir, Turkey
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Degirmenci M, Karaca B, Gorumlu G, Durusoy R, Demir Piskin G, Bozkurt MT, Cirak Y, Tunali D, Karabulut B, Sanli UA, Uslu R. Efficacy and safety of bevacizumab plus capecitabine and irinotecan regimen for metastatic colorectal cancer. Med Oncol 2009; 27:585-91. [PMID: 19526201 DOI: 10.1007/s12032-009-9253-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2009] [Accepted: 06/02/2009] [Indexed: 12/14/2022]
Abstract
Recent phase III trials have proven the fact that adding bevacizumab to irinotecan plus infusional 5-fluorouracil (5-FU)/leucovorin (LV) should be preferred as a first-line treatment for metastatic colorectal cancer (mCRC). But, since the data regarding bevacizumab administered together with capecitabin, an oral fluoropyrimidine, and irinotecan in patients with mCRC is limited, we aimed to analyse the efficacy and safety of bevacizumab with capecitabine plus irinotecan (BEV-CAPIRI) regimen in mCRC patients. Records of patients treated with BEV-CAPIRI regimen between January 2005 and March 2008 were reviewed. Efficacy data regarding response rates (RR) as well as safety data were collected. Progression free survival (PFS) and overall survival (OS) analyses were done by using the Kaplan-Meier method. A total number of 53 metastatic colorectal cancer patients were treated with BEV-CAPIRI regimen. The median age of this population was 57.3 +/- 11.5 (range 29-78). The treatment was well tolerated. The RR was 43.3%, while 30.1% of the patients achieved stable disease (SD). Median PFS and OS were 12.6 +/- 1.4 and 20.6 +/- 1.7 months, respectively. However, median OS was 21.3 months for male and 14.6 months for female patients. In addition, median OS and PFS was 25.3 months and 16.2 months for the patients who received BEV-CAPIRI as first-line treatment, respectively, and for the other patients it was 15.2 months and 10.2 months, respectively. In conclusion, BEV-CAPIRI is an effective and well-tolerated alternative regimen for mCRC, leading to disease control in a vast majority of patients with mCRC.
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Affiliation(s)
- M Degirmenci
- Division of Medical Oncology, Tulay Aktas Oncology Hospital, Ege University School of Medicine, Bornova, 35100, Izmir, Turkey
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Karasulu H, Kantarcı G, Karaca B, Armagan V, Güneri T, Göker E. Determining the cytotoxicity of methotrexate-loaded microemulsion on human breast, ovarian, and prostate carcinoma cell lines: a new modality for an old drug. Drug Dev Res 2009. [DOI: 10.1002/ddr.20283] [Citation(s) in RCA: 4] [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: 11/10/2022]
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Gorumlu G, Kucukzeybek Y, Kemal-Gul M, Karaca B, Cosan-Terek M, Karabulut B, Sanli UA, Akman L, Ozsaran A, Dikmen Y, Uslu R. Pegylated liposomal doxorubicin in heavily pretreated epithelial ovarian cancer patients. J BUON 2008; 13:349-352. [PMID: 18979548] [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: 05/27/2023]
Abstract
PURPOSE While most patients with ovarian cancer respond to first-line treatment, 50-75% of these patients will eventually relapse. Pegylated liposomal doxorubicin (PLD) is an active agent indicated for the treatment of patients with disease that is refractory to both paclitaxel- and platinum-based regimens, but skin toxicity remains the dose-limiting toxicity of the drug. The primary objective of this retrospective study was to evaluate the activity and safety of this agent in patients with heavily pretreated ovarian cancer. PATIENTS AND METHODS Patients with platinum-refractory/ resistant, paclitaxel-pretreated epithelial ovarian carcinoma were treated with PLD 50 mg/m2 in 4-week courses until disease progression or unacceptable toxicity. All patients had progressive disease (PD) before starting PLD. Primary endpoints were response rate, progression free survival (PFS) and toxicity and secondary endpoints duration of response (DOS) and overall survival (OS). RESULTS Seventeen heavily pretreated patients (median number of previous chemotherapy regimens 3, range 1-5) with taxane- and platinum-refractory disease were analysed. No complete response (CR) was achieved, while 3 (17%) partial responses (PR) and 2 (11%) cases with stable disease (SD) were observed. The median PFS was 15 weeks (range 10-21) and median OS 32 weeks (range 16-47). Palmar plantar erythrodysesthesia (PPE) occurred in 4 (23%) patients and was of grade 4 in 1 (6%) patient. Stomatitis occurred in 3 (17%) patients and was grade 3 in 1 (6%) patient. Grade 3-4 neutropenia occurred in only 2 (12%) patients. No febrile neutropenia was encountered. CONCLUSION Pegylated liposomal doxorubicin is an active and tolerable agent in heavily pretreated epithelial ovarian cancer patients.
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MESH Headings
- Adenocarcinoma, Clear Cell/complications
- Adenocarcinoma, Clear Cell/drug therapy
- Adenocarcinoma, Clear Cell/secondary
- Adolescent
- Adult
- Aged
- Carcinoma, Papillary/complications
- Carcinoma, Papillary/drug therapy
- Carcinoma, Papillary/secondary
- Cystadenocarcinoma, Serous/complications
- Cystadenocarcinoma, Serous/drug therapy
- Cystadenocarcinoma, Serous/secondary
- Disease-Free Survival
- Doxorubicin/analogs & derivatives
- Doxorubicin/therapeutic use
- Female
- Humans
- Middle Aged
- Neoplasm Recurrence, Local/complications
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/secondary
- Organoplatinum Compounds/adverse effects
- Ovarian Neoplasms/complications
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/pathology
- Polyethylene Glycols/therapeutic use
- Salvage Therapy
- Survival Rate
- Young Adult
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Affiliation(s)
- G Gorumlu
- Division of Medical Oncology, Department of Obstetrics and Gynecology, Ege University School of Medicine, Bornova, Izmir, Turkey
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Bozkaya G, Nart A, Uslu A, Onman T, Aykas A, Doğan M, Karaca B. Impact of calcineurin inhibitors on bone metabolism in primary kidney transplant patients. Transplant Proc 2008; 40:151-5. [PMID: 18261573 DOI: 10.1016/j.transproceed.2007.11.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE Posttransplant bone disease and bone metabolism markers were investigated in primary kidney transplant recipients receiving calcineurin inhibitor (CNI) based triple immunosuppression. We examined the safety profile and independent potential of CNIs on bone formation and bone resorption. The study also attempted to correct for modifiable and nonmodifiable factors that impact on posttransplantation bone metabolism, such as age, renal function, rejection, steroid dosage, and secondary hyperparathyroidism. MATERIALS AND METHODS Serum alkaline phosphatase and osteocalcin were used as indices of bone formation and urinary deoxypyridinoline as a marker for bone resorption. Bone mineral density (BMD) data were assessed in all patients. Osteocalcin and deoxypyridinoline data were correlated with BMD scores to predict the clinical utility and sensitivity of these tests. Sixty-six patients among 300 kidney transplant recipients were enrolled as eligible candidates based upon more than 12 months' posttransplantation follow-up excellent graft function (GFR values >60 mL/min), and intact parathormone levels <100 pg/mL. RESULTS Mean follow-up was 1395.3 +/- 179.3 days and 1488.9 +/- 225.1 days for cyclosporine (CsA) and FK506 groups, respectively. Mean values for alkaline phosphatase and osteocalcin were 108.8 +/- 6.0 versus 98.4 +/- 9.7 U/L and 10.1 +/- 1.2 versus 9.8 +/- 1.5 ng/mL for the CsA and FK506 groups, respectively. Both CsA and FK506 caused mild osteoblastic proliferation and matrix mineralization activity, as reflected by increased osteocalcin and alkaline phosphatase levels in 22.6% and 12.5% of patients, respectively. This bone formation activity was counterbalanced by a three-fold increase in urine deoxypyridinoline levels in both groups. Mean deoxypyridinoline levels were, respectively, 13.8 +/- 4.4 versus 11.3 +/- 2.1 nM/mMCr in the CsA and FK506 groups. Thirty-four (68%) patients in the CsA and 10 (62.5%) in the FK506 groups had elevated deoxypyridinoline levels. A strong correlation existed between deoxypyridinoline levels and BMD scores for the CsA group (P < .0001). Despite the presence of relatively greater elevations in deoxypyridinoline and BMD values among CsA-treated patients, there was no significant difference in terms of bone resorption potential of both groups. No correlation existed between iPTH values (<65 pg/mL or among 65 to 98.2 pg/mL) at any time versus osteocalcin, alkaline phosphatase, deoxypyridinoline, or BMD levels. The symptomatic bone disease and fracture rates were 0% in this series. CONCLUSION Calcineurin inhibitor-based immunosuppression with low maintenance doses of glucocorticoids induces slight bone formation but relatively potent, clinically relevant bone resorption.
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Affiliation(s)
- G Bozkaya
- Izmir Teaching and Research Hospital Organ Transplantation Center, Izmir, Turkey
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Kucukzeybek Y, Gorumlu G, Karaca B, Erten C, Cengiz E, Kemal Gul M, Karabulut B, Uslu R, Sanli UA, Goker E. Docetaxel and platinum combination chemotherapy in locally advanced or metastatic head and neck cancer. J BUON 2008; 13:199-203. [PMID: 18555465] [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: 05/26/2023]
Abstract
PURPOSE To assess the efficacy and toxicity of the docetaxel and platinum combination in patients with locoregionally advanced or metastatic squamous cell carcinoma of the head and neck (SCCHN). PATIENTS AND METHODS A total of 24 patients with metastatic or locoregionally advanced SCCHN treated with docetaxel and platinum combination chemotherapy were retrospectively reviewed. All of them had histologically proven SCCHN, measurable disease and ECOG performance status of 2 or less, and were treated with docetaxel 75 mg/m(2) as a 60 min i.v. infusion on day 1, followed by cisplatin 75 mg/m(2) or carboplatin AUC 6 as a 60 min i.v. infusion on day 1 every 3 weeks, until disease progression or unacceptable toxicity. Patients were evaluated for response, survival and toxicity. RESULTS Seven (29%) patients showed partial response (PR) and 1 (4%) complete response (CR) for an overall response rate of 33%. Twelve (50%) patients had stable disease (SD). Disease control rate was 83%. The median follow-up time was 26.4 months (range 2-127), the median time to progression 16 months (range 2-20), and the median overall survival 19 months (range 2-22). Grade 3-4 hematologic toxicity occurred in 13 (54%) patients. Febrile neutropenia was seen in 5 (21%) patients. CONCLUSION Docetaxel plus cisplatin or carboplatin is an effective regimen with acceptable safety profile for palliation of locally advanced or metastatic SCCHN.
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Affiliation(s)
- Y Kucukzeybek
- Division of Medical Oncology, Ege University School of Medicine, Bornova, Izmir, Turkey
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Cavusoglu AC, Bilgili S, Alaluf A, Doğan A, Yilmaz F, Aslanca D, Karaca B, Yüksel B, Topaloglu E. Vascular endothelial growth factor level in the serum of diabetic patients with retinopathy. ACTA ACUST UNITED AC 2007; 39:205-8. [PMID: 18025626 DOI: 10.1007/s12009-007-0037-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 11/30/1999] [Accepted: 03/27/2007] [Indexed: 10/22/2022]
Abstract
We determined serum levels of vascular endothelial growth factor (VEGF) at different stages of diabetic retinopathy before laser photocoagulation in 65 patients (31 nonproliferative (Group 1) and 34 proliferative (Group 2)) and in healthy controls (Group 3). VEGF levels in all groups were different. There was a significant correlation between VEGF concentration and HbA1c levels. VEGF may be involved in the prediction of diabetic retinopathy and contributes to endothelial damage in diabetics.
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Affiliation(s)
- A Celebiler Cavusoglu
- Clinical Biochemistry, The Ministry of Health, Izmir Education & Research Hospital, Izmir, Turkey.
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Yapar N, Sener A, Karaca B, Yucesoy M, Tarakci H, Cakir N, Yuce A. Antibiotic-associated diarrhea in a Turkish outpatient population: investigation of 288 cases. J Chemother 2005; 17:77-81. [PMID: 15828448 DOI: 10.1179/joc.2005.17.1.77] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Oral antibiotics are often prescribed, especially for respiratory tract infections in the community. The widespread use of broad-spectrum antibiotics causes an increased incidence of antibiotic-associated diarrhea (AAD). Although AAD has been studied in hospitalized patients, there is little available information concerning the characteristics of AAD in outpatient populations. The aim of this study was to investigate the clinical and laboratory findings of adult patients with community-acquired AAD. Between June 1998 and December 2003, the clinical reports of 288 patients were retrospectively reviewed. We observed that the duration between the start of antibiotic treatment and onset of symptoms was 7 days in most of the patients (86%), and the mean time was 9+/-1.0 days. The diarrhea was self-limited in all cases and mean duration of symptoms was 3 (+/-1.0) days (1-7 days). The most common symptoms were abdominal discomfort and tenesmus (61.1%), while elevated WBC counts and fever were detected rarely. We were able to perform microbiologic investigations in only 88 patients because of the financial problems. Of the 88 stool specimens tested, none of them were positive for pathogenic bacterial growth or toxin A production.
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Affiliation(s)
- N Yapar
- Dokuz Eylul University School of Medicine, Department of Infectious Diseases and Clinical Microbiology, 35340 Inciralti, Izmir, Turkey.
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Ulger Z, Karaca B, Dikbaş O, Işik M, Altundağ K, Güler N. Fanconi's anemia and squamous cell carcinoma of the larynx. Ann Hematol 2003; 82:321-2. [PMID: 12692683 DOI: 10.1007/s00277-003-0646-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2003] [Accepted: 03/13/2003] [Indexed: 11/29/2022]
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Yeniyol CO, Bozkaya G, Cavuşoğlu A, Arslan M, Karaca B, Ayder AR. The relation of prostate biopsy results and ratio of free to total PSA in patients with a total PSA between 4-20 ng/mL. Int Urol Nephrol 2002; 33:503-6. [PMID: 12230281 DOI: 10.1023/a:1019550819762] [Citation(s) in RCA: 4] [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: 11/12/2022]
Abstract
OBJECTIVE In this study our aim was to investigate the efficacy of free to total PSA ratio in discrimination of benign prostate hyperplasia and prostate cancer. MATERIALS AND METHODS A total of 194 patients, 52 to 82 years old (mean 66.06 +/- 0.47 years) with PSA levels between 4 to 20 ng/mL were included into this study. Each patient underwent sextant prostate biopsy under transrectal ultrasound guidance. The patients were divided into two groups as PSA 4-10 and 10-20 ng/mL. Patients with benign and malign results were compared with respect to age, total PSA level, free PSA level and free/total (f/t) PSA ratio. RESULTS Biopsies revealed prostate cancer in 16 of 130 patients (12.3%) with serum PSA 4-10 ng/mL and in 10 of 64 patients (15.6%) with serum PSA 10-20 ng/ml. In both PSA groups free PSA and f/t PSA levels were statistically significant, where total PSA levels were not. In patients with 4-20 ng/mL total PSA levels and a cut off level of < 0.18 for f/t PSA, the sensitivity, specificity and positive predictive value for prostate cancer were 88.5%, 53.6% and 20.4% respectively. CONCLUSION Higher levels of PSA suggest prostate cancer, but still additional parameters are needed for patients with PSA 4-20 ng/mL, such as free PSA and f/t PSA. Although a cut off level of < 0.18 for f/t PSA seems to be the most accurate one to discriminate benign and malign diseases further studies on larger groups of patients are needed.
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Affiliation(s)
- C O Yeniyol
- SSK Izmir Hospital, Urology Department, Turkey
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