Conclusions: We developed a reliable technique of angiographic delivery of gel polymer for temporary vascular occlusion of selective renal buy SU5402 artery branches using local plug formation. Ongoing studies are under way to assess technique consistency and the long-term effects of the polymer.”
“Introduction: Factors determining the in vivo uptake of radiolabeled somatostatin analogs by neuroendocrine tumors are poorly known. The aim is to evaluate in vivo tumor perfusion and regulation of somatostatin receptors (sstr) following acute

exposure to octreotide, in an animal model of neuroendocrine tumor.

Methods: (H2O)-O-15 flow studies were performed in 8 CA20948 tumor-bearing rats and another 36 rats underwent three [Ga-68]-DOTA-Tyr(3)-octreotate imaging sessions at 24-h intervals. After baseline (Day 0) imaging, scanning was repeated on Day 1 after octreotide injection (175 mu g/kg), with a variable delay: no injection (controls, n=7), coinjection (n=6), and octreotide injection 20 min (n=7), 2 h (n=8) and 4 h (n=8) before imaging. Repeat images without octreotide was performed at Day 2 followed by sacrifice and tumor counting.

Results: (H2O)-O-15 studies failed to measure quantitative

tumor perfusion in this model. On Day 1, ratio of tumor uptake to Day 0 was 1.2 +/- 0.3 in controls; 0.6 +/- 0.2 FK506 mouse in the coinjection group; 0.9 +/- 0.2, 1.1 +/- 0.1 and

1.2 +/- 0.2 in the other groups, respectively. Uptake in the coinjection group showed a statistically significant reduction of tumor uptake (P < .0001). All groups showed increased uptake on Day 2, without statistical differences between groups. In vivo tumor counts showed good correlation with ex vivo countings (R-2=0.946).

Conclusion: Acute exposure to unlabeled octreotide in this neuroendocrine tumor model results in a CRT0066101 purchase rapid recycling or resynthesis of sstr. Positron emission tomography (PET) allowed to reliably assess quantitative uptake of [Ga-68]-DOTA-Tyr(3)-octreotate over time in the same animal, but failed in this model to measure tumor perfusion. (C) 2010 Elsevier Inc. All rights reserved.”
“Purpose: We compared the effectiveness of percutaneous microwave ablation and radical nephrectomy for implanted VX-2 carcinoma in rabbit kidneys.

Materials and Methods: VX-2 tumors were surgically implanted into the left lower pole parenchyma of 26 New Zealand White rabbit kidneys. At 12 days after implantation implanted rabbits were randomly assigned to 1 of 3 groups according to therapy type, including percutaneous microwave ablation, nephrectomy and no treatment. The anticancer effect and safety were compared among the groups. Histopathological changes in tumor tissue with time after microwave ablation were evaluated.