Reproductive and hormonal characteristics (breastfeeding, parity, age at first full-term birth, hormone replacement therapy) were associated with luminal subtype, compared to non-luminal breast cancer, as consistent with previous studies. Obesity and overweight increased the risk of triple negative subtype, particularly in premenopausal women. Older age and use of hormone replacement therapy were related to the risk of HER-2 overexpressing breast cancer. Our data suggest a significant heterogeneity in association of traditional breast cancer risk factors and tumor subtypes.

PurposeThe aims of this study were to comprehensively describe the psychosocial and medical characteristics of women who initiated tamoxifen or aromatase inhibitors for breast cancer and to compare levels of emotional distress according to their medical (tumor demographics, treatment type, treatment duration) and psychosocial (self-esteem, perceived social support, sociodemographic) characteristics.MethodsA total of 104 women currently receiving tamoxifen or aromatase inhibitors was recruited from outpatient clinics and they were asked to complete self-report questionnaires including the Rosenberg Self-Esteem Scale, the Multidimensional Scale of Perceived Social Support and the Hospital Anxiety and Depression Scale during their routine follow-up. Psychosocial and medical characteristics of the patients were first described and subsequently the score of emotional distress was compared with these.ResultsThe patients’ mean age was 52.49 ± 10.30 and they were being treated for an average of 24.3 months. Out of the patients’ characteristics, educational and marital status, level of perceived social support and self-esteem were all significantly related with emotional distress. As for medical variables, the score of distress was relatively higher among patients in the first 2 years of their treatment than the patients who were in the second to fifth years of treatment, but this was not statistically significant.ConclusionsGiven the results of this study, it appeared that patient variables, rather than the medical or treatment characteristics, were related with emotional distress in women undergoing endocrine treatment. For that reason it is critical that medical staff are aware of patient factors that relate to distress during a long period of adjuvant endocrine therapy.

Cisplatin is an effective chemotherapeutic agent in the treatment of several types of malignant solid tumors but its clinical use is associated with ototoxicity. In the present study, we investigated the effect of selenium administration on lipid peroxidation (malondialdehyde [MDA]) and cisplatin-induced ototoxicity in rats. Healthy wistar albino rats (n = 21) were randomly divided into 3 groups: control (C), cisplatin (Cis), cisplatin and selenium (Cis+Se). Cisplatin was administered for 3 days to Cis and Cis+Se groups. Cis+Se group received selenium 5 days before cisplatin injection and continued for 11 consecutive days. Hearing thresholds and lipid peroxidation (MDA) levels of the rats were recorded before injections and at the end of experimental protocol. The cochleas of animals were harvested for histologic and immunuhistochemical examinations. In biochemichal analyses, pretreatment with selenium prevented the elevation of MDA levels in Cis+Se group rats. Moreover, animals in Cis+Se group had better hearing threshold levels than animals in cis group. Samples obtained from the animals in Cis group revealed extensive loss of the normal microarchitecture of the organ of Corti. On the other hand, animals in Cis+Se group exhibited a preservation of the morphology of the organ of Corti and outer hair cells. In the immunohistochemical examinations of cochlear tissues stained with anti-caspase-3, a higher degree of immunopositivity was found in the Cis group. When Cis+Se group and Cis group were compared, significantly less immunopositivity occurred in the Cis+Se group (P < 0.05). Thus, it appears that pretreatment with selenium may reduce cisplatin-induced ototoxicity in rats.