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Jonas Scheck,Philipp Bruners,David Schindler,Christiane Kuhl,Peter Isfort 대한영상의학회 2018 Korean Journal of Radiology Vol.19 No.4
Objective: To compare short-, mid-, and long-term follow-up ablation zone volume alterations as well as imaging features on contrast-enhanced computed tomography (CT) after irreversible electroporation (IRE) of primary and secondary liver tumors with findings subsequent to radiofrequency ablation (RFA). Materials and Methods: Volume assessment of 39 ablation zones (19 RFA, 20 IRE) after intervention was performed at four time intervals (day 0 [t1; n = 39], day 1–7 [t2; n = 25], day 8–55 [t3; n = 28], after day 55 [t4; n = 23]) on dual-phase CT. Analysis of peripheral rim enhancement was conducted. Lesion’s volume decrease relative to the volume at t1 was calculated and statistically analyzed with respect to patient’s sex, age, ablation modality (IRE/RFA), and history of platinum-based chemotherapy (PCT). Results: No influence of patient’s sex or age on ablation volume was detected. The decrease in ablation zones’ volume was significantly larger (p < 0.05 for all time intervals) after IRE (arterial phase, 7.5%; venous phase, 9.7% of initial volume) compared to RFA (arterial phase, 39.6%; venous phase, 45.3% of initial volume). After RFA, significantly smaller decreases in the ablation volumes, in general, were detected in patients treated with PCT in their history (p = 0.004), which was not detected after IRE (p = 0.288). In the arterial phase, peripheral rim enhancement was frequently detected after both IRE and RFA. In the venous phase, rim-enhancement was depicted significantly more often following IRE at t1 and t2 (pt1 = 0.003, pt2 < 0.001). Conclusion: As per our analysis, ablation zone volume decreased significantly in a more rapid and more profound manner after IRE. Lesion’s remodeling after RFA but not IRE seems to be influenced by PCT, possibly due to the type of cell death induced by the different ablation modalities.
The Role of Genetic Variation Near Interferon-Kappa in Systemic Lupus Erythematosus
Harley, Isaac T. W.,Niewold, Timothy B.,Stormont, Rebecca M.,Kaufman, Kenneth M.,Glenn, Stuart B.,Franek, Beverly S.,Kelly, Jennifer A.,Kilpatrick, Jeffrey R.,Hutchings, David,Divers, Jasmin,Bruner, G Hindawi Publishing Corporation 2010 Journal of biomedicine & biotechnology Vol.2010 No.-
<P>Systemic lupus erythematosus (SLE) is a systemic autoimmune disease characterized by increased type I interferons (IFNs) and multiorgan inflammation frequently targeting the skin. IFN-kappa is a type I IFN expressed in skin. A pooled genome-wide scan implicated the <I>IFNK</I> locus in SLE susceptibility. We studied <I>IFNK</I> single nucleotide polymorphisms (SNPs) in 3982 SLE cases and 4275 controls, composed of European (EA), African-American (AA), and Asian ancestry. rs12553951C was associated with SLE in EA males (odds ratio = 1.93, <I>P</I> = 2.5 × 10<SUP>−4</SUP>), but not females. Suggestive associations with skin phenotypes in EA and AA females were found, and these were also sex-specific. <I>IFNK</I> SNPs were associated with increased serum type I IFN in EA and AA SLE patients. Our data suggest a sex-dependent association between <I>IFNK</I> SNPs and SLE and skin phenotypes. The serum IFN association suggests that <I>IFNK</I> variants could influence type I IFN producing plasmacytoid dendritic cells in affected skin.</P>