EGTA had no effect on SOD activity of the mucosa whereas 1 and 5 mm calcium decreased
SOD activity of the muscle. Catalase: 1 see more mm calcium resulted in decreased catalase activity of the muscle and no change in the activity of the mucosa, whereas 5 mm calcium resulted in increased catalase activity of the mucosa but no change in the activity of the muscle. Discussion: Mucosa showed more SOD and catalase activity than the muscle. Both SOD and catalase showed differing sensitivities to EGTA and calcium. Copyright (C) 2011 S. Karger AG, Basel”
“Purpose: To prospectively investigate and monitor the response to antiandrogen treatment of bone metastases in patients with prostate cancer by using diffusion-weighted (DW) magnetic resonance (MR) imaging with the apparent diffusion coefficient (ADC) and functional diffusion maps (DMs).
Materials and Methods: This study had institutional GDC-0994 chemical structure review board approval; informed consent was obtained from
all patients. Nine treatment-naive men (mean age, 73 years; range, 66-86 years) with 20 pelvic bone metastases were included. Imaging was performed before antiandrogen treatment and at 1, 2, and 3 months afterward. Imaging included a DW MR imaging sequence with five b factors (0-800 sec/mm(2)). Serum prostate-specific antigen (PSA) levels and mean ADCs of each metastasis were measured over time and analyzed by using the general linear model. Pairwise comparisons (paired-samples t tests) of PSA levels and ADCs before and after therapy were performed with the significance level set at P < .017 (Bonferroni correction). To determine the relationship between serum PSA level and the averaged mean ADCs in each patient, the two parameters were correlated across time. In addition, an analysis with functional DMs was performed to evaluate ADC response to treatment on a per-voxel basis.
Results: Serum PSA levels decreased by more than 90% during therapy. The mean ADCs of metastases
were increased significantly at 1 (P < .001), 2 (P = .002), and 3 (P = .011) months after therapy compared with pretreatment values. Heterogeneous response was revealed at functional DM analysis. After 1 month of therapy, 47.3% of all analyzed tumor selleck inhibitor voxels showed significantly increased ADCs, while 46.5% were unchanged and 6.2% exhibited decreased ADCs in comparison to the pretreatment values. At 3 months after therapy, the proportion of voxels showing ADC decrease was higher (13.7%) than that at 1 month.
Conclusion: DW MR imaging allows monitoring of antiandrogen therapy in bone metastases. PSA level decrease corresponded well with an increase in mean tumor ADC. Heterogeneity of tumor response to therapy was demonstrated by functional DM analysis. (C) RSNA, 2010″
“Recent large-scale genomic profiling studies of glioma have yielded a proliferation of candidate subclasses, biomarkers and therapeutic targets for investigation.