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Articles by Parviz Toossi
Total Records ( 2 ) for Parviz Toossi
  Mostafa Rezaei-Tavirani , Hakimeh Zali , Layla Nabai , Parviz Toossi , Farhad Malek Zad and Yousof Pourkhoshbakht
  In the present study, cytotoxicity effects of calprotectin on Human Gingival Fibroblast (HGF) and Human Foreskin Fibroblast (HFFF) were compared. For these evaluations, both cells were exposed to the different concentrations of calprotectin, for 24, 48 and 72 h. Cell proliferation was assessed using MTT assay. Our results revealed that growth inhibition of calprotectin on HGF and HFFF occur in a dose- and time-dependent manner. Results of this investigation showed that sensitivity of HGF cells to cytotoxic effect of human calprotectin was more than HFFF. The results indicate that drug resistance process is different for the two kinds of fibroblast cells.
  Samaneh Sadat Seyyedi , Mohammad Shahidi Dadras , Mostafa Rezaei Tavirani , Hossein Mozdarani , Parviz Toossi and Ali Reza Zali
  Most people are Exposed to Extremely Low-Frequency Electromagnetic Fields (ELF-EMF). A number of studies have indicated association between exposure to extremely low frequency electromagnetic fields and a variety of cancers. Recently some therapeutic techniques such as repetitive Transcranial Magnetic Stimulation (rTMS) have been used to study localization of brain function, connectively of brain regions and pathophysiology of neuropsychiatric disorders (rTMS utilize low frequency-electromagnetic field). Here, the effect of continuous ELF electromagnetic fields (3 Hz, sinusoidal, 3 h and 4 mT) on the protein expression of human fibroblast cells is investigated via proteomics. The comparison of the 2-DE separated proteins from the exposed and sham (control) cells showed that some protein expressions are affected by radiation. The two proteins that their expression are reduced about 50% are determined as alpha 1 antitrypsin (A1AT) and Transthyretin (TTR). As it is reported that the amounts of these proteins reduced in the pathological conditions it can be concluded that application of ELF-EMF in therapeutic aspects may be to accompanying with their side effects.
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