background and aims: recurrent aphthous stomatitis (ras) is one of the most common ulcerative diseases of the oral mucosa. definitive etiology of ras has not been conclusively established. there is no certain treatment for aphthous but some drugs such as steroid are commonly used for treatment of ras. regarding the effect of zinc on healing process of epithelial layer and cell division, in this...

abstract :  reovirus (respiratory enteric orphan virus), a naturally occurring benign human pathogen, has an inherent ability to target transformed and cancerous cells and cause their lysis, while leaving non-transformed cells relatively unaffected.  the efficiency of this innate oncolytic activity of reovirus correlates with expression of the ras oncogene.  cells expressing activated ras and t...

Mestastatic prostate cancer cells (MPCCs) frequently metastasize to bone, which is a “favorite soil” for colonization and proliferation of MPCCs. Prostate cancer bone mestastasis is tightly associated with tumor-induced bone lesions, most commonly caused from the etiological imbalance between osteoblastic bone formation and osteoclastic bone resorption, and from the anti-tumor immune response. ...

statement of problem: recurrent aphthous stomatitis (ras) is one of the most common inflammatory diseases encountered in dental practice, but the precise etiology and pathogenesis of the disease is not fully understood. vascular endothelial growth factor (vegf) is a multifunctional angiogenic cytokine involved in angiogenesis and wound healing. there is evidence that vegf could play an importan...

Communicative moves and lexical cohesion patterns (LCPs), as mounting evidence shows, are two important indicators in writing and publishing the RAs. However, the interaction between these two crucial elements and the contribution of this interaction to the failure or success of the RAs have not been given due attention to date. Having this in mind and based on a sound theoretical framework, at...

There are very few studies about K-ras mutations in colorectal cancer (CRC) from developing countries such as Iran. It is therefore essential to conduct studies to learn about the molecular signature of such tumors, allowing the determination of an appropriate management plan. In the present study, we aimed to determine the frequency and types of K-ras mutations among patients with CRC in Iran....

Background and Aim: Stress has been associated with recurrent aphthous stomatitis (RAS). The common treatment of RAS is a topical steroid. This study aimed to investigate the difference of salivary cortisol between RAS patients treated with a topi-cal steroid and those without treatment. Materials and Methods: Thirty-two female patients with RAS participated in this case-control study and were...

The aim of this study was to investigate changes in immunoreactivity of Ras and Raf-1 in lung epithelial cells of rats exposed to carcinogen NNK after swimming training. 50 Wistar rats were randomly divided into five groups: control, training, training + NNK, NNK and sham. NNK-induced groups received NNK Subcutaneously once a week at a dose of 12/5 mg per kg body weight for 12 weeks. The exerci...