To determine whether the high frequency, strain-dependent binding of gp41 MPER in IgMhi B cell subsets was mediated by membrane IgM or some other strain-specific molecule, we activated splenocytes from naïve BALB/c and C57BL/6 mice in vitro with BAFF+LPS and measured the fraction of total (IgM+IgG) ELISpots that bound gp41-MPER peptide (Fig. 3).
Each day the number of each strain is calculated so that the dominant (highest frequency) strain can be identified.
Our study enabled us to identify low-amplitude, high-frequency strain regimen able to increase major matrix proteins of bone tissue and to regulate the expression of VEGF variants, showing that an appropriate combined loading has the potential to functionalise cellularized bone-like constructs.
Analyses using medium conditioned with the high-frequency strain revealed that this strain released a certain factor(s) that promoted cell-to-cell transformation and arrested growth of the other strains.
The performance of conventional ultrasound was significantly higher compared to high frequency ultrasound strain imaging, as the high frequency based method seemed more prone to errors.
Our observation that C. glabrata and some hyphae-deficient C. albicans mutants (efg1Δcph1Δ, eed1Δ, dfg16Δ) disseminate at high frequency suggests that strain specific differences in dissemination exist and supports the hypothesis that yeast cells are the morphological form responsible for dissemination.
Such profound effects on global gene expression raise the possibility that the experimental outcomes were due not to PVL, but were consequence of major genetic perturbations [9], perhaps due to pleiotropic mutations that occur with relatively high frequency in laboratory strains [15], [16].
We also found that the percentage of same-strain recurrences was similar for early recurrences within 14 days (87%) and for later recurrences from days 15 30 (77%), reflecting perhaps the overall high frequency of same-strain recurrences.
Broad use of antibiotics leads to rapid spread and high frequency of resistant strains, particularly in hospital and long-term care settings where rates of antibiotic use are the highest.
Aminoglycosides have been used in the initial empiric treatment of endocarditis caused by Gram-positive bacteria, including S. aureus, but the high frequency of resistant strains and adverse reactions have discouraged its clinical use [ 48].
In light of the consistent increase in the proportion of NARST isolates over the last decade, as suggested by data collected at our Institute [ 15], the high frequency of NARST strains as found in the present study seems to be a true phenomenon rather than due to selection bias.
