(Int J Periodontics Restorative Dent 2010;30:187-193.)”
“Aims: Brown adipose

tissue (BAT) is a potential source of false-positive findings on [(18)F] FDG PET. In this report, we have discussed Liproxstatin-1 supplier the (18)F-FDG uptake mechanisms in BAT and have aimed to determine if dual time point PET imaging helps to differentiate BAT from malignant lesions.\n\nMethods: Patients with dual-time-point PET/CT scans were reviewed retrospectively and 31 cases (11 males, 20 females, age: 28.6 +/- 9.7) having hypermetabolic BAT were included for this study. (18)F-FDG uptake in BAT was quantitatively analyzed by maximum standardized uptake values (SUVmax), and average percent change in SUVmax of BAT between early and delayed images was calculated.\n\nResults: Compared to the initial scans,(18)F-FDG Bafilomycin A1 in vitro uptakes in BAT in delayed images were higher in 26 of the patients, and lower in one patient. In terms of body regions,18F-FDG uptake increased in 80.6%, remained unchanged in 5.5% and decreased in 13.9% of the body regions. Mean percent change in SUVmax, including all BAT regions, was 19.8 +/- 19.1% while the mean percent increase was calculated as 69 +/- 25% in regions where progressive accumulation was observed. The increase in SUVmax correlated with the time interval between the two scans.\n\nConclusion:

Physiologic (18)F-FDG uptake in BAT increases over time and may mimic the behavior of malignant lesions on dual time point PET imaging. Without the exact anatomic definition of the CT scan, false positive interpretation of PET data may be possible in cases with atypical BAT. (C) 2010 Elsevier Espana, S.L. and SEMNIM. All rights reserved.”
“In Arabidopsis thaliana environmental and endogenous cues promote flowering by activating expression of a small

number of integrator genes. The MADS box transcription factor SHORT VEGETATIVE PHASE (SVP) is a critical inhibitor of flowering that directly represses transcription of these genes. However, we show by genetic C59 Wnt manufacturer analysis that the effect of SVP cannot be fully explained by repressing known floral integrator genes. To identify additional SVP functions, we analyzed genome-wide transcriptome data and show that GIBBERELLIN 20 OXIDASE 2, which encodes an enzyme required for biosynthesis of the growth regulator gibberellin (GA), is upregulated in svp mutants. GA is known to promote flowering, and we find that svp mutants contain elevated levels of GA that correlate with GA-related phenotypes such as early flowering and organ elongation. The ga20ox2 mutation suppresses the elevated GA levels and partially suppresses the growth and early flowering phenotypes of svp mutants.