Quantification of periodontopathic bacteria in saliva using the invader assay.

When quantifying periodontopathic bacteria, it is important to use a convenient method that does not produce false negative results. The Invader assay is a convenient method because it does not involve gene amplification. The purpose of this study was to evaluate the validity of the Invader assay to quantify periodontopathic bacteria.

Rapid quantification of periodontitis-related bacteria using a novel modification of Invader PLUS technologies.

The Invader PLUS technology is a sensitive, rapid method for the detection and quantification of nucleic acid. While the original technology is based on the amplification by polymerase chain reaction (PCR) of the target sequence followed by its detection using the Invader technology, the current modification allows simultaneous PCR amplification and Invader reaction. The PCR primers and the Invader probes are designed to operate at the same temperature.

Interaction between the LDL-receptor gene bearing a novel mutation and a variant in the apolipoprotein A-II promoter: molecular study in a 1135-member familial hypercholesterolemia kindred.

Lipid and lipoprotein concentrations in plasma generally reflect complex influences of multiple genetic loci. Even an autosomal dominant disorder, familial hypercholesterolemia (FH), is characterized by phenotypic heterogeneity, as low-density lipoprotein (LDL) levels vary widely within the same pedigree. Molecular screening for LDL receptor ( LDLR) mutations among 75 patients with clinically apparent FH led to identification of a novel splice-site mutation (IVS14+1 G>A) shared by 14 patients.