Inhibitory effects and mechanism of antifungal action of the natural cyclic depsipeptide, aureobasidin A against Cryptococcus neoformans.

Cryptococcosis is an opportunistic fungal infection caused mainly by Cryptococcus neoformans. The aim of the present study was to evaluate the inhibitory effect of aureobasidin A on C. neoformans with special focus on its mode of action.

Expression of Major Efflux Pumps in Fluconazole-Resistant Candida albicans.

Introduction: Resistance to azole antifungals is considered as a significant problem in Candida albicans infections. Several molecular mechanisms of fluconazole resistance including alterations in the gene encoding the target enzyme ERG11 or overexpression of efflux pump genes including CDR1, CDR2, MDR1, MDR2 and FLU1 have been reported. The aim of this study was to investigate overexpression of efflux pump genes including CDR1, CDR2, MDR1, MDR2 and FLU1 in fluconazole- resistant C.

Management of hospital infection control in iran: a need for implementation of multidisciplinary approach.

Nosocomial, or hospital-acquired, infections are considered the most common complications affecting hospitalized patients. According to results obtained from studies conducted in the Children Medical Center Hospital, a teaching children's hospital and a tertiary care referral unit in Tehran, Iran, improvements in infection control practices in our hospital seem necessary. The aim of this study was to identify risk management and review potential hospital hazards that may pose a threat to the health as well as safety and welfare of patients in an Iranian referral hospital.

Seroprevalence of antibodies to diphtheria, tetanus and pertussis among healthy adolescents and adults in Iran.

Serologic data on diseases that are preventable by vaccine are useful to evaluate the success of immunization programs. In this study we evaluated the serologic levels of antibodies to diphtheria, tetanus, and pertussis. In a cross sectional study, a total of 360 people aged 10-25 years were randomly selected and classified by sex and age (10-14, 15-20, 21-25 years).

Optimizing of Nutrients for High Level Expression of Recombinant Streptokinase Using pET32a Expression System.

Streptokinase (SK) is being increasingly used in the treatment of acute myocardial infarction and ischemic stroke. The feeding control method using substrate balance equations is vital to maintain the preferred specific growth rate for the high-level expression of recombinant proteins. In this study, initial experiments on chemical and temperature inducible expression systems were carried out to identify appropriate expression conditions to improve production of recombinant Streptokinase.

Increase resistant rates and ESBL production between E. coli isolates causing urinary tract infection in young patients from Iran.

Emerging antimicrobial resistance rates and Extended-spectrum beta-lactamase producing Escherichia coli recovered from urinary tract infections (UTI) is an increasing problem in specific regions, limiting therapeutic options. One hundred E. coli isolates causing UTI in patients with age from 2 months to 12 years admitted at CMC in the period of April 2009 to March 2010 were tested for antibiotic susceptibility using the disk diffusion method.

Lethal toxic encephalopathy due to childhood shigellosis or Ekiri syndrome.

Lethal toxic encephalopathy due to shigellosis or Ekiri syndrome is a rare complication of shigellosis with a high fatality rate. Data are very limited on factors that can predict this encephalopathy, so we evaluated clinical and laboratory characteristics for these patients. In this study children with extreme toxicity and convulsions followed by rapid neurological deterioration resulting in brain edema and fatal outcome without sepsis and severe dehydration were selected as having lethal toxic encephalopathy.