objective(s): acquisition of tnf-α resistance plays role in the onset and growth of malignant tumors. previous studies have demonstrated that mcf-7 cell line and its doxorubicin resistant variant mcf-7/adr are resistant against the cytotoxic effects of tnf-α. in this study, we investigated the role of akt activation in resistance of mcf-7 and mcf-7/adr against tnf-α cytotoxicity. materials and ...

objective(s): p-glycoprotein (p-gp) is an efflux protein, the overexpression of which has been associated with multidrug resistance in various cancers. although sirna delivery to reverse p-gp expression may be promising for sensitizing of tumor cells to cytotoxic drugs, the therapeutic use of sirna requires effective carriers that can deliver sirna intracellularly with minimal toxicity on targe...

Phyllodes tumors are biphasic fibroepithelial neoplasms of the breast. While the surgical management of these relatively uncommon tumors has been addressed in the literature, few reports have commented on the surgical approach to tumors greater than ten centimetres in diameter – the giant phyllodes tumor. We report a case of giant breast tumors and discuss the techniques utilized for pre-...

Background: Breast cancer is the most common invasive cancer with high mortality in women all around the world. The present evidence shows that younger patients have poor survival. Thus, the aim of this study was to compare the pathologic characteristics of breast cancer in women younger than 40 years compared with older. Methods: This is a cross-sectional study which contains 681 patients wit...

background: interleukin-19, a member of the interleukin-10 family of cytokines, contributes to breast cancer pathogenesis. high interleukin-19 expression in breast tumor tissues is associated with poor clinical outcome. this study aimed to assess the changes in serum level of interleukin-19 in breast cancer patients in comparison with normal women and its association with the clinicopathologica...

Prognosis of metastatic breast cancer is very poor which urges the necessity to develop novel potential drug candidates. We assessed two compounds with tri-aryl structures (A and B) for their potency to reduce primary breast tumor growth and lung metastasis in 4T1 mice model. MTT assay, 4T1 mammary mouse model and immunohistochemistry experiments were used in this study. In vitro results exhibi...

Background: Baculoviral inhibitor of apoptosis repeat-containing 5 (BIRC5) gene is an inhibitor of apoptosis that expresses in human embryonic tissues but it is absent in most healthy adult tissues. The copy number of BIRC5 has been indicated to be highly increased in tumor tissues; however, its association with the age of onset in breast cancer is not well understood. Methods: Forty tumor tiss...

Objective(s):IL-12 as an anti-tumor cytokine and IL-33 a novel identified cytokine with both pro- or anti-tumor activities, play important roles in response against tumor cells. Our aim was to evaluate the IL-12 and IL-33 levels and single nucleotide polymorphisms (SNP) in their genes in patients with breast cancer. Materials and Methods:Blood samples were collected from 100 patients with breas...