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Akagunduz O.,Ege University | Karaca B.,Tulay Aktas Oncology Hospital | Atmaca H.,Celal Bayar University | Uzunoglu S.,Celal Bayar University | And 4 more authors.
Journal of B.U.ON. | Year: 2010

Purpose: Many drugs have been tested to increase the sensitivity of prostate cancer cells to radiotherapy. Gossypol, a natural polyphenols 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. © 2010 Zerbinis Medical Publications.

Eyigor S.,Ege University | Eyigor S.,Tulay Aktas Oncology Hospital | Karapolat H.,Ege University | Yesil H.,Ege University | Kantar M.,Ege University
Pediatric Hematology and Oncology | Year: 2011

This study compares the quality of life (QoL) and psychological status of mothers of children with cancer with those of mothers of children without cancer. One hundred hospitalized children and their mothers, as primary caregivers, were included in this study. Fifty mothers with healthy children were enrolled as the control group. A children and mother query form was used to obtain demographical data. The disease histories were extracted from patient records. QoL was measured with the Medical Outcomes Study 36-item Short Form Survey (SF-36) and the State-Trait Anxiety Inventory (STAI) in order to assess the psychological symptoms of the mothers in the study and in the control groups. The mean age of the caregivers was 35.93 ± 8.27 years, whereas the mean age of the mothers in the control group was 39.72 ± 6.88 years. The general health, vitality, social functioning, and mental health scores from the SF-36 and the STAI-trait scores were significantly poorer among the mothers of children with cancer as compared with the scores of the mothers of children without cancer (P < .05). Significant negative correlations were found between the age of the children, the age at diagnosis, and the SF-36 subscores for physical functioning, physical role, and pain (P < .05). The mothers of children with cancer, who require hospital care, have poorer QoL and psychological health than the mothers of healthy children. These results suggest that the current system for treating cancer in Turkish children should also include close monitoring of the care-giving mothers' QoL and psychological health. © 2011 Informa Healthcare USA, Inc.

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