background and aims: the causal agents of viral lettuce big vein disease are two viruse, lettuce big vein associated virus (varicosavirus) and mirafiori lettuce virus (ophiovirus). these viruses have coat proteins of similar size but have different morphologies and serologically unrelated.the purpose of this study was to distinguish and detect lbvav and milv in lettuce fields in tehran province...

background: one of the most common sexual‑transmitted infections among women is human papillomavirus (hpv) infection which is associated with genital cancers. different studies in iran reported various prevalences, and combining their results could be important for health policy makers. this study aims to determine the total prevalence of hpv infection as well as its related genotypes, particul...

conclusions there is a significant correlation between tympanosclerosis and h. pylori (p = 0.002). this correlation can single out h. pylori as a pathological factor in the development of tympanosclerosis; however, further studies are needed to prove this correlation. results from a total of 19 patients with tympanosclerosis , 16 cases (84.2%) were h. pylori positive, while in the control group...

objective: the aim of this study was to investigate the existence of human t-lymphotropic virus type 1 (htlv-1) in subgingival plaque of htlv-1 seropositive pa-tients. materials and methods: a total of 18 patients including 13 females and fivemales, with a mean age of 37 years participated in this descriptive study. half of them were htlv-1 carriers and the others were in htlv-1 associated myel...

background while tuberculosis (tb) can be diagnosed by microscopy and culture, the sensitivity of ziehl-neelsen staining is variable and culture results require 4 - 8 weeks to be determined. polymerase chain reaction (pcr) and its modifications, including nested pcr, might be promising methods for the rapid diagnosis of tb. objectives this study aimed to evaluate the performance of nested pcr o...

conclusions the results of this study phenotypically and genotypically confirmed the high frequency of esbl-producing strains, such as the ctx-m and ctx-m-1 genes, among enterobacteriaceae isolates in our region. therefore, use of antibiotic susceptibility testing for the detection of esbl isolates prior to the prescription of beta-lactam antibiotics is recommended. this could help prevent the ...

there are significant challenges associated with qualitative and quantitative nucleic acid tests performed in diagnostic laboratories. the development of internationally available certified reference materials which can be traced to reference measurements will contribute to a better understanding of the performance characteristics of nucleic acid tests and enhance reliability and comparability ...

background:   methicillin-resistant   staphylococcus   aureus  (mrsa)   is  a major cause of nosocomial and community infections that are becoming increasingly difficult to combat, because of emerging resistance to all classes of antibiotics. moreover panton-valentine  leukocidin (pvl) is an important virulence factor in s. aureus and causes white blood cell destruction, necrosis and  accelerat...