Beta-lactamase producing strains of Pseudomonas aeruginosa are important etiological agents of hospital infections. Carbapenems are among the most effective antibiotics used against Pseudomonas infections, but they can be rendered infective by group B β -lactamase, commonly called metallo-beta lactamase. In this study, the antimicrobial sensitivity patterns of P. aeruginosa strains isolated fro...

BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most common nosocomial pathogens which can cause a broad spectrum of infections. OBJECTIVES The current study aimed to describe the frequency and antibiotic susceptibility patterns of clonal groups of gentamicin-resistant strains of MRSA isolated from a tertiary care hospital in Tehran, Iran. MATERIALS AND METHODS A...

background infections caused by shigella are a major cause of diarrheal disease in the developing and developed countries. the present study was conducted to apply and evaluate arbitrarily primed pcr (ap-pcr) for investigation of genetic relatedness among the strains of shigella sonnei isolated from cases of acute diarrhea in tehran. patients and methods totally, 60 s. sonnei strains isolated f...

BACKGROUND AND OBJECTIVES Shiga toxin-producing Escherichia coli (STEC) have emerged as human pathogens and contamination via animal origin has been a major public health concern. We compared the distribution of phylogenetic groups and prevalence of stx gene variants among the pathogenic strains of Escherichia coli isolated from feces of diarrheatic calves in Tehran suburb farms. MATERIALS AN...

BACKGROUND The aim of this study was to evaluate the effects of conjugated linoleic acid (CLA) on apoptosis of tachyzoites of T. gondii, RH strain (type I) and the cyst-forming Tehran strain (type II) in vitro. METHODS Toxoplasma strains were injected into the peritoneal cavity of BALB/c mice. The Tehran strain forms cysts in the brain of mice. Bradyzoites within the cysts are reactivated to ...

Aim The aims of this study were to investigate antibiotic resistance pattern and molecular characterization of Salmonella Infantis strains, isolated from human sources in Tehran hospitals from 2008 to 2010. Background Infection caused by Salmonella is one of the major public health problems. Despite the clinical importance of Salmonella enteric subsp. enteric serovar Infantis in humans, there...

BACKGROUND This study aimed to define the nasopharyngeal carrier rates, serotype distribution, and antimicrobial resistance patterns of Streptococcus pneumoniae in healthy children less than ten years-old in Tehran. METHODS This was a cross-sectional study conducted from November 2008 until January 2009. Nasopharyngeal specimens were collected by trained investigators from 1300 healthy childr...

Solution of forward kinematics in Stewart platform using six rotary sensors on joints of three legs A. Mahmoodi, A. Sayadi & Mohammad B. Menhaj a Department of Aerospace Engineering, Center of Excellence for Design and Simulation of Space Systems (DSSS), KNTU University of Technology, Vafadar Ave. Tehranpars., Tehran, Iran b Department of Mechanical Engineering, Azad Islamic University, Karaj B...