Women's Health Weekly
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Breast Cancer
Findings in breast cancer reported from Pfizer Inc.
June 25th, 2009
"The role of breast cancer resistance protein (Bcrp) and the combined activities of Bcrp and P-glycoprotein (P-gp, Mdr1a/1b) in limiting the brain penetration of drugs at the blood-brain barrier (BBB) were investigated using wild-type FVB, Mdr1a/1b(-/-), (-/-), Bcrp(-/-), and Mdr1a/1b(-/-), (-/-) Bcrp(-/-) mice. Four drugs, flavopiridol, imatinib mesylate (Gleevec), PF-407288, and prazosin, with different transport specificity for BCRP/Bcrp and MDR1/Mdr1a were selected, and the drug levels in plasma, cerebrospinal fluid, and brain of mice were determined," investigators in the United States report. "Flavopiridol and prazosin were identified as substrates for both mouse...
Source: Women's Health Weekly (2009-06-25)
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