engraftment by donor lymphocytes in an immunologically compromised host can result in donor t-cell activation against host major histocompatibility complex antigens, with resultant gvhd. the acute form of gvhd (agvhd) is characterized by erythroderma, cholestatic hepatitis, and enteritis. the intestinal symptoms of agvhd include crampy abdominal pain and watery diarrhea, often with blood. the c...

Patients in the intensive care unit (ICU) especially those who require mechanical ventilation are at increased risk for developing gastrointestinal (GI) complications such as bleeding, infection, and motility dysfunction. It is estimated that prevalence of GI patients approximately 50-80% lots go undiagnosed. Complications can affect different parts system, including esophagus, stomach, small i...

background and objective: our aim was to evaluate the prevalence and population ratio of violence in our center which is one of the tertiary referral centers of trauma in tehran. we also aimed to evaluate the motiva-tions of the struggle, the instrument used, and the type of injuries in the patients who had referred to us after a struggle. methods: in this cross-sectional retrospective study, a...

opium is one of the oldest herbal medicines currently used as an analgesic, sedative and antidiarrheal treatment. the effects of opium are principally mediated by the μ -,κ- and δ-opioid receptors. opioid substances consist of all natural and synthetic alkaloids that are derived from opium. most of their effects on gastrointestinal motility and secretion result from suppression of neural activi...

inflammatory myofibroblastic tumor (imt) is a rare neoplastic lesion with tendency toward local aggressive behavior and recurrence. the tumor most commonly occurs in the pulmonary system of children and young adult, although it may rarely develop in older patients and other organs. symptoms are non-specific and depend on the location of the tumor. the gastrointestinal tract is rarely the primar...

background gastrointestinal stromal tumors (gist) are the most common mesenchymal tumors of the gastrointestinal (gi) tract. they are usually c-kit positive and seen slightly more common in men. these tumors are seen in the gi tract from the esophagus to the anus with occasional invasion or metastasis. method in this retrospective study, we evaluated the prevalence of c-kit positive stromal tum...

there is documented evidence that infection in laboratory animals can often influence the outcome of experiments. all infections, apparent or inapparent, are likely to increase biological variability. as a research project concerning the diversity and distribution of parasites of rabbit and guinea pig in a conventional laboratory animal house, about 87 rabbits (from 700 ) and 105 guinea pigs (f...

vancomycin-resistant enterococci (vre) are becoming a major concern in medical practice. their increased prevalence and their ability to transfer vancomycin resistance to other bacteria have made them a subject of close scrutiny and intense investigation. colonization is usually acquired by susceptible hosts in an environment with a high rate of patient colonization with vre. the aim of this st...

background: evaluation of intra-city roads in terms of environmental factors of motor vehicle injuries can help us to better identify these factors and the share of each of the factors in injuries. therefore, this study was conducted to determine the high injury areas and the risk factors of motor vehicle crashes resulting in injury and death in tehran, the capital city of iran, from november 2...