conclusions findings of this study showed that integron can have a limited frequency in s. aureus isolated from clinical sample in tehran. results among the 200 samples, 1% of the strains (two isolates) contained the class 1 integron gene. the results of this study showed that the highest frequency of the obtained samples belonged to males and the isolates occurred mostly in individuals aged 51...

blackleg disease of oilseed rape, caused by leptosphaeria maculans, is one of the three most important diseases of the plant in iran. it is also considered as one of the most important diseases of oilseed rape worldwide which causes serious yield losses. during 2010 the oilseed rape fields were surveyed at province golestan and plant samples demonstrating suspected symptoms of the disease were ...

conclusions l. innocua is not a pathogen, but the presence of the bacterium could be an indicator of probable contamination with l. monocytogenes. moreover, there is a potential risk to public health from the consumption of raw or undercooked burgers, which may increase the possibility of the acquisition of resistance to antibiotics. objectives the aim of this study was to evaluate the occurren...

conclusions campylobacter is responsible for some important clinical problems such as enteritis and is also associated with meningitis and hemolytic-uremic syndrome. it is imperative to monitor the prevalence and antibiotic resistance of campylobacter spp. as well as other the zoonotic bacteria. results twelve (10%) campylobacter spp. from 120 stool samples were isolated including c. coli and c...

background: listeria monocytogenes is one of the most important food-borne bacteria causing septicemia, meningitis and encephalitis in humans. the objective of this study was to evaluate the occurrence and antibiotic resistance of the bacterium in retail minced beef in ahvaz, south-west of iran. methods: in this survey, 150 samples of minced beef were randomly obtained from retail butcheries in...

In this paper, a mathematical model is developed to calculate the conversion and the residence time reaction for plug flow and mixed flow in the reactors filled with cylin-drical particles using the shrinking core model. In this modeling, the size of the particles is un-chamged during the reaction. Also, the reaction rate is controlled by the gas layer resistance, the ash layer resistance, and ...

objectives the objective of this study was to develop the primers for single and/or multiplex pcr amplification assays for simultaneous identification of class a, class b, and class d carbapenem hydrolyzing β-lactamases in enterobacteriaceae and then to evaluate their efficiency. conclusions we have reported here a reliable method, composed of single and multiplex pcr assays, for screening all ...

five common tetracycline resistance genes tet(a), tet(b), tet(m), tet(o) and tet(s) were studied by polymerase chain reaction in 100 bacteria isolated from iranian fish farms. in the antibiogram test most of the bacteria were either intermediately or completely resistant to tetracycline. nine isolates out of 46 aeromonas spp. contained either tet(a/m/s) resistant genes as follows: tet(a) in a. ...