A Plasmid Confers Hypermucoviscosity-Like Phenotype and Alters Capsule Production and Virulence.

Hypermucoviscosity (hmv) is a capsule-associated phenotype usually linked with hypervirulent strains. The key components of this phenotype are the RmpADC proteins contained in non-transmissible plasmids identified and studied in . is closely related to and recently has been identified as an emergent human pathogen.

Antibacterial activity against Streptococcus mutans and diametrical tensile strength of an interim cement modified with zinc oxide nanoparticles and terpenes: An in vitro study.

Statement Of Problem: Interim restorations are occasionally left in the mouth for extended periods and are susceptible to bacterial infiltration. Thus, dental interim cements with antibacterial properties are required.

Purpose: The purpose of this in vitro study was to determine in vitro antibacterial activity against Streptococcus mutans and to compare the diametrical tensile strength (DTSs) of dental interim cement modified with zinc oxide nanoparticles (ZnO-NPs) with that of cement modified with terpenes.

Draft Genome Sequence of the First Hypermucoviscous Klebsiella variicola Clinical Isolate.

An antibiotic-susceptible and hypermucoviscous clinical isolate of Klebsiella variicola (K. variicola 8917) was obtained from the sputum of an adult patient. This work reports the complete draft genome sequence of K.

[Characterization of SHV-5 beta-lactamase-producing Klebsiella pneumoniae in an intensive care unit].

Objective: To perform the molecular characterization of Klebsiella pneumoniae isolates from pediatric patients and health care workers at the intensive care unit of a tertiary care hospital in Mexico City.

Material And Methods: Fifteen Klebsiella pneumoniae isolates collected during an outbreak in June 1996 were analyzed; eight were from patients and seven from health care workers of Mexico's Children's Hospital. Characterization of isolates was carried out by pulsed field gel electrophoresis (PFGE), random amplified polymorphic DNA polymerase chain reaction (RAPD-PCR) and serotyping, beta-Lactamase isoelectric focusing (IEF), and nucleotide sequencing of PCR products.