Phenotypic and molecular characterization of nosocomial K. pneumoniae isolates by ribotyping.

Purpose: To characterize clinical isolates of Klebsiella pneumoniae by phenotypic and genotypic methods.

Material/methods: Over a 12-month period, 52 isolates of K. pneumoniae were isolated.

Prevalence, antibiotic susceptibility pattern and production of extended-spectrum beta-lactamases amongst clinical isolates of Klebsiella pneumoniae at Armed Forces Hospital in Saudi Arabia.

The aim of this descriptive study was to determine the prevalence of Klebsiella pneumoniae from different clinical specimens, their antibiotic susceptibility pattern and the extended-spectrum beta-lactamase (ESBL) production among such isolates at Armed Forces Hospital, Al-Kharaj, Saudi Arabia, from November, 2004 to October, 2007. A total of 328 isolates of K. pneumoniae recovered from 8152 different specimens were studied for ESBL production and antimicrobial susceptibility.

The haemopoietic stem cell: between apoptosis and self renewal.

Self renewal and apoptosis of haemopoietic stem cells (HSC) represent major factors that determine the size of the haemopoietic cell mass. Changes in self renewal above or below the steady state value of 0.5 will result in either bone marrow expansion or aplasia, respectively.

Molecular typing of Salmonella enterica serotype Worthington isolates from infantile diarrhoea.

Background And Objectives: Salmonella Worthington has been known to be a causative agent for childhood diarrhoea. There is a paucity of information on the molecular relatedness of the strains isolated in various hospitals in India. The present study was carried out to attempt molecular typing of a cluster of Salmonella Worthington isolates obtained from cases of infantile diarrhoea during a six month period, from a tertiary care paediatric hospital in Delhi, India.