Streptococcus mutans is frequently associated with dental caries. Bacterial fermentation of food debris generates an acidic environment on the tooth surface, ultimately resulting in tooth deterioration. Therefore, various mouthwashes have been used to reduce and prevent Streptococcus mutans. The aim of this study was to evaluate the antimicrobial activities of 4 commercial mouthwashes and those...

The objective of the present study was to determine the antimicrobial resistance profile of planktonic and biofilm cells of Staphylococcus aureus and coagulase-negative staphylococci (CoNS). Two hundred Staphylococcus spp. strains were studied, including 50 S. aureus and 150 CoNS strains (50 S. epidermidis, 20 S. haemolyticus, 20 S. warneri, 20 S. hominis, 20 S. lugdunensis, and 20 S. saprophyt...

Appropriate and extensive taxon sampling is one of the most important determinants of accurate phylogenetic estimation. In addition, accuracy of inferences about evolutionary processes obtained from phylogenetic analyses is improved significantly by thorough taxon sampling efforts. Much of the previous work examining the impact of taxon sampling on phylogenetic accuracy has focused on the effec...

The constant accumulation of sequence data poses new computational and methodological challenges for phylogenetic inference, since multiple sequence alignments grow both in the horizontal (number of base pairs, phylogenomic alignments) as well as vertical (number of taxa) dimension. Put aside the ongoing controversial discussion about appropriate models, partitioning schemes, and assembly metho...

Benthic primary producers in tropical reef ecosystems can alter biogeochemical cycling and microbial processes in the surrounding seawater. In order to quantify these influences, we measured rates of photosynthesis, respiration, and dissolved organic carbon (DOC) exudate release by the dominant benthic primary producers (calcifying and non-calcifying macroalgae, turf-algae and corals) on reefs ...

Despite several recent studies, the phylogeny of plethodontid salamanders is not yet fully resolved and the phylogenetic positions of several key genera, especially Aneides, Hemidactylium, Hydromantes and Karsenia, are contentious. Here we present a combined dataset of complete mitochondrial genomes and three nuclear loci for 20 species (16 genera) of plethodontids, representing all major clade...

The Taxon-Task-Taxon method (Anno et al., 1996) is a statistical modeling approach to predict performance decrements in response to various stressors. Our research is extending this approach to accommodate new more acute stressors associated with chemical protective gear, and new tasks with greater involvement of cognitive, perceptual, and motor function. In this paper, we describe the basics o...

Citation: Broussou DC, Lacroix MZ, Toutain P-L, Woehrlé F, El Garch F, Bousquet-Melou A and Ferran AA (2018) Differential Activity of the Combination of Vancomycin and Amikacin on Planktonic vs. Biofilm-Growing Staphylococcus aureus Bacteria in a Hollow Fiber Infection Model. Front. Microbiol. 9:572. doi: 10.3389/fmicb.2018.00572 Differential Activity of the Combination of Vancomycin and Amikac...

abtalkh formation is a part of late cretaceous sedimentary unit in the kopet- dagh basin, ne iran. this study deals with the study of this formation in the eastern parts of the basin in padeha village. it thickness is about 991m, and lithologically consists of grey, greyish to blue shale and marl. the lower contact with abderaz formation is conformable and transitional, but the upper boundary w...