background: inflammatory bowel disease, an autoimmune disease, has two clinical manifestations including crohn’s disease and ulcerative colitis (uc). il-17 has been the target of intensive research in autoimmune diseases. the influence of toll like receptor 4 (tlr-4) gene polymorphisms on il-17 production has also been revealed in uc patients and tissue inflammation in mice. objectives: to inve...

the present treatment goals for inflammatory bowel diseases (ibd) especially ulcerative colitis (uc) include rapid induction of clinical remission, steroid-free maintenance of clinical remission, mucosal healing and improvement of quality of life in uc patients. immunomodulators have been reserved for steroid- dependent or steroid- refractory uc patients. among these agents, azathioprine/6-merc...

The motor neuron disease amyotrophic lateral sclerosis (ALS) typically begins with localized muscle weakness. Progressive, widespread paralysis often follows over a few years. Does the disease begin with local changes in a small piece of neural tissue and then spread? Or does neural decay happen independently across diverse spatial locations? The distinction matters, because local initiation ma...

The conditions and properties of hydrothermal vents and hydrothermal fields are compared in terms of their ability to support processes related to the origin of life. The two sites can be considered as alternative hypotheses, and from this comparison we propose a series of experimental tests to distinguish between them, focusing on those that involve concentration of solutes, self-assembly of m...

introduction: ulcerative colitis (uc) and crohn's disease (cd) are chronic inflammatory bowel diseases (ibd) with uncertain etiology thought to be triggered by interactions between various environmental, genetic and immunologic factors. role of different factors in ibd are controversial. materials and methods: the aim of this study is to determine the possible risk factors in a group of iranian...

background worldwide, the incidence of inflammatory bowel disease (ibd) is increasing. this study aims to evaluate the diagnostic value of two serological markers, atypical perinuclear anti-neutrophil cytoplasmic antibodies (atypical-p-anca) and anti-saccharomyces cerevisiae antibodies (asca), with the intent to determinetheir relationship to ulcerative colitis (uc) and crohn's disease (cd), in...