background: diarrhea, caused by enteroaggregative escherichia coli (eaec), is an important cause of illness and death. numerous virulent factors have been described in eaec. however, their prevalence was highly variable among eaecs of distinct geographic locations. studies have shown that dispersin (antiaggregation protein, aap) is one of the important and abundant virulent factors in eaec. in ...

introduction: periodontitis is a multi-factorial inflammatory disease of periodontium. a precise mechanism in which smoking affects periodontium is not accurately understood. this study was planned to survey salivary osteocalcin (oc) level among smokers with chronic periodontitis and its comparison to non-smoker patients which may help achieve a better understanding of mechanisms being involved...

conclusions our results suggest that human exposure to mcpyv occurs throughout life. the mcpyv antibody levels remained high among older adults in our population, consistent with reports from other populations. patients and methods in this cross-sectional study, we collected 440 serum samples from healthy individuals 2 to 78 years of age who visited the pasteur institute’s clinic in tehran, ira...

background: retroviruses of human t-lymphotropic viruses (htlv-1 and htlv-2) have been demonstrated to be endemic in the north-eastern region of iran. this study aims to determine htlv-1 and htlv-2 prevalence among healthy individuals in neyshabur city during 2010-2014. methods: a total of 8054 blood samples were collected from healthy participants in neyshabur, north-eastern iran. the blood sa...

despite the availability of various alkaline phosphatase (alp) isoenzymes, the calf enzyme is being used in current enzyme assays as the detector enzyme. the glycosylation pattern of this enzyme makes it a suitable ligand for binding to wheat germ agglutinin lectin (wga). as a result of this property, the enzyme can not be used as a conjugate with this lectin, and the calf enzyme conjugates can...

results 34 (34%) of the renal transplant recipients and 26 (26%) of the control group were positive for anti-toxoplasma igg. in addition 18 (18%) of the renal transplant recipients and 4 (4%) of the control group were positive for anti-toxoplasma igm. for both values of the antibodies, differences were statistically significant (p < 0.025 and p < 0.001 respectively). the pcr results indicated t...

conclusions the present study supported the contamination with t. gondii as a risk factor for schizophrenia just in women. results the analyses confirmed the significant differences between healthy women and ones with schizophrenia (p = 0.001) as well as between males and females with schizophrenia (p = 0.009) in igg positivity. materials and methods t. gondii igg antibodies of 100 patients wit...

background there are different types of aflatoxins, including aflatoxin m1, m2, g1, g2, b1 and b2 produced in the food chain, especially when the food is infected with fungi and can directly be consumed by humans. considering that our country is located in the subtropical geographic region where temperature and humidity ecological factors are among determining factors in contamination with afm1...

the purpose of this survey was to evaluate natural occurrence and content of aflatoxin m1 (afm1) in dairy products marketed in urmia (iran). during september 2007, 40 samples of pasteurized milk, 40 samples of ultra high temperature treated (uht) milk, 40 samples of creamy cheese and 40 samples of iranian feta cheese were collected from different supermarkets in urmia city. afm1 contents were d...

background: varicella zoster virus (vzv) causes chickenpox in children and zoster (zona) in the elderly. using rflp-pcr method for detection of vzv specific snps orf38, 54 and 62 could  distinguish the profile of vzv isolates. the aim of this study was to investigate enzymatic digestion pattern of vzv orf38 and orf54 in chickenpox patients using rflp technique. methods: thirty-eight chickenpox ...