background: exposure to human blood and body fluids is a common risk for nurses. many factors can affect the prevalence and incidence of this occupational hazard. psychosocial factors at work may be a risk factor for the exposure. objective: to assess needle stick, sharp injury and mucus exposure to blood-borne pathogens among nurses in iran and to determine the association between these exposu...

conclusions based on our results, it seems that there were no cases of obi among chronic hcv-infected patients with thalassemia and bleeding disorders, particularly hemophilia. however, to improve decisions concerning obi screening, especially in transfusion centers, and concerning the use of comprehensive screening methods, more original studies with more precise laboratory techniques and larg...

Background: Coronary artery bypass surgery is one of the surgeries in which high blood transfusions are needed. About 20% of all surgical operations require a blood transfusion. Packed cell administration increases perioperative morbidity and mortality. In the United States, from every 1000 people, one has undergone a coronary artery bypass graft surgery, and it is estimated that around 800,000...

Background: Aspergillus flavus is the most important fungus for production of Aflatoxin B1 (AFB1). This study evaluated the ability of gamma rays (GRs) and electron-beam irradiation (EBI) to counteract the deleterious effects of aflatoxin B1 (AFB1) in a chicken model. Methods: Overall, 168 one-day-old male Coturnix quails were assigned to eight treatments for 42 d in Tehran, Iran, in 2010 and ...

abstract background leukemia is the most prevalent childhood cancer and acute lymphoblastic leukemia (all) constitutes 75% of all cases. the most frequent presenting symptoms are fever, weight loss and pallor. early detection of clinical symptoms positively affects timely diagnosis. the objectives of the present study were to assess frequency of presenting symptoms, laboratory data, immune phen...

background : mdm2, e-cadherin, survivin and her2 genes are involved in the regulation of normal cell growth. however, any crucial change in their expression levels can convert a normal cell into a cancer cell. numerous studies have identified alterations of these gene expression levels in various cancers, particularly in breast cancer. thus, they may be used as diagnostic biomarkers. in this ex...

Abstract Background Leukemia is the most prevalent childhood cancer and Acute Lymphoblastic Leukemia (ALL) constitutes 75% of all cases. The most frequent presenting symptoms are fever, weight loss and pallor. Early detection of clinical symptoms positively affects timely diagnosis. The objectives of the present study were to assess frequency of presenting symptoms, laboratory data, immune ph...

Abstract Background Thyroid hormones have a crucial role in metabolism and proliferation of blood cells. Thyroid dysfunction induces different effects on blood cells such as anemia, erythrocytosis leukopenia, thrombocytopenia, and in rare cases causes’ pancytopenia. It also alter RBC indices include MCV, MCH, MCHC and RDW. Thus this study attempted to evaluate effect of hypo & hyperthyroi...

the t helper 17 (th17) cells have been suggested to have osteoclast activating effects while t helper 2 (th2) cells are considered to have an osteoprotective role in periodontitis. this study was to compare the markers of th17 cells (rorc2 and il-17 genes) with that of th2 cells (il-4 and gata-3 genes) between healthy and periodontitis tissues.the samples were obtained from patients with period...