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2004 OCT 7 - (NewsRx.com & NewsRx.net) -- The cyclooxygenase-2 inhibitor SC-236 stops mammary tumor metastasis.
"Cyclooxygenase-2 (COX-2) expression is increased in breast cancer and surgery has been shown to increase the growth of metastatic tumours. We investigated the effect of selective COX-2 inhibition on the growth of metastases in either an experimental metastasis model or following excision of a murine primary breast tumor. Fifty thousand 4T1 mammary carcinoma cells were injected into the mammary fat pad of female BALB/c mice," scientists in Ireland report.
"When the mean TD reached 8[+ or -]0.4 mm, tumors were excised and the mice were randomized into two groups (n=12 per group) to receive daily intraperitoneal injections of the selective COX-2 inhibitor, SC-236 or drug vehicle for 14 days. Alternatively, experimental metastases were established by tail-vein injection of 50,000 4T1 cells. Mice received either the selective COX-2 inhibitor, SC-236 or drug vehicle for 14 days (n=12 per group)," wrote G. Roche-Nagle and colleagues, Beaumont Hospital, Royal College of Surgeons in Ireland.
"SC-236 treatment significantly reduced tumor burden, the number and size of spontaneous metastases following primary tumor excision. SC-236 treatment also reduced tumor burden, the ...