objective: to compare the maternal and umbilical cord serum selenium concentrations in low and normal birth weight neonates. materials and methods: a case-control study was carried out in vali-asr and akbarabadi hospitals (jan. to dec. 2013). two groups; case group; 91 mothers who delivered a low birth weight (lbw) neonate and control group; 86 subjects who delivered a normal birth weight neona...

objective: because of the host immunological system response against the minor blood groups of donor, transfusion in some cases, especially for patients require repeated transfusions (such as people with thalassemia), can be considered as a significant problem.  a proposed way is coating the surface antigens on red blood cells (rbcs) by covalent binding of methoxy polyethylene glycol (mpeg). th...

introduction: prevention and control of cross infections for the personnel of dental offices and clinics are a critical issue in dental practice. in this study, a standardized questionnaire was developed to assess the knowledge, attitude and practice of the oral health-care workers in tehran university dental school regarding the blood-transmitted diseases and its validity and reliability were ...

during two years study about mitochondrial disease (sep 1999-agu 2001), 15 cases of leigh syndrome (ls) were diagnosed, that consisted of 11 boys and 4 girls aged between 6 to 156 (mean: 40.5) months. most of the patients (46.7%) became symptomatic between 1-5 years of age. triggering factors were reported in 66.6% of the patients and 40% of them became symptomatic after infections. the most fr...

the aim of this study was to investigate the prevalence of hepatitis b, hepatitis c, hiv and syphilis infections in blood donors referred to tehran blood transfusion center (tbtc), and determine any association between blood groups and blood- borne infections between the years of 2005 and 2011.this was a retrospective study conducted at tbtc. all of the donor serum samples were screened for hbv...

background hypovitaminosis d has been associated with the development of gestational diabetes mellitus (gdm) in many observational studies. objectives we report the first study of the impact of prenatal vitamin d supplementation on postpartum dysglycemia in gdm patients in a randomized clinical trial. patients and methods women with gdm at 12 - 32 weeks of gestation were assigned randomly to ei...

the cytotoxic activity of natural killer cells is usually tested by radioactive assay csi cr release assay), which detects the release of cytoplasmic contents after plasma membrane disintegration of dying cells. in contrast to this indirect evaluation of cytotoxicity, the assessment of cell damage by flow cytometry aims to provide a more exact characterization of the death pathway via detection...