psa is a 33-kda serine protease that is produced predominantly by prostate epithelium. however, it has been shown that about 30-40% of female breast tumors produce psa and its production is associated with the presence of estrogen and progesterone receptors. we have now developed a new tissue culture system to study psa production in breast cancer and its association with prognostic factors suc...

objective(s): glioblastoma is the most lethal tumor of the central nervous system. here, we aimed to evaluate the effects of exogenous delivery of p53 and a nanoformulation of curcumin called dendrosomal curcumin (dnc), alone and in combination, on glioblastoma tumor cells. materials and methods: mtt assay was exploited to measure the viability of u87-mg cells against dnc treatment. cells were ...

objective(s):marine organisms are known as a potential source of natural products, which contain bioactive substances with therapeutic properties. sea cucumbers are prominent among marine organisms because of their dietary and therapeutic applications. in addition, they have capacity of synthesizing saponins molecules and other metabolites with therapeutic properties such as antitumor, antimicr...

background and objectives: electric, magnetic and electromagnetic fields can act as stress factors with different effects on biological systems. due to the nutritional and medicinal values, and the increasing electromagnetic radiations, the present study was performed to investigate the effects of the electromagnetic field on the developmental stages and cytotoxic properties of okra. methods: b...

background glioblastoma is a type of brain tumor with poor response to available therapies, and shows high rate of mortality. despite remarkable advancements in our knowledge about cytogenetic and pathophysiologic features of glioblastoma, current treatment strategies are mainly based on cytotoxic drugs; however, these therapeutic approaches are facing progressive failure because of the resista...

introduction: electroporation is a practical technique used to transport the molecules across the cell membrane. the utilization of fluorescent molecules is the method widely used to evaluate the electropermeability of cell membrane as a result of pulse application. it is also possible to use mathematical methods to predict the changes caused in cell electropermeability as a result of the chang...

ovarian cancer is one of the major causes of death in women. parabens are a class of chemicals widely used as preservatives in cosmetic and pharmaceutical products, they mimic estrogens, which are known to play a role in the development of different cancers in women. the aim of this study was to investigate the proliferative effects of methyl paraben (mp) and propyl paraben (pp) on human ovaria...

background: gbm is the most common and malignant astrocity tumor and it is persistent to common treatment so, these patients have a very low survival. several researchers around the world, including iran, have been investigated gbm-cell line in vitro. however in vivo studies have not been fulfilled. methods : as standard cell line (u-87mg) derived from human gbm and total gbm tumor derived from...

For an indoor non-directed line of sight optical wireless communication (NLOS-OWC) system we investigate the optimized Lambertian order (OLO) of light-emitting diodes (LEDs). We firstly derive an expression for the OLO from a conventional Lambertian LED model. Then, we analyze the indoor multi-cell NLOS-OWC channel characteristics including the optical power distribution and the multipath time ...