Our first generation pH indicator (6-fluoropyridoxol) has been successfully observed in vivo to detect the transmembrane pH gradient which was found to be reversed compared with normal tissue. A new analog 6-fluoropyridoxamine has been prepared with a pKa of 7.05 and its utility has been demonstrated in whole blood and the perfused heart. pH is thought to strongly influence the uptake and retention of various chemotherapeutic drugs and we have initiated studies of the pharamcokinetics of 5-fluorouracil and the pro-drug 5-fluorocytosine. pH and drug clearance may be observed simultaneously in tumors in vivo. (Service 8) REPORT PERIOD: (09/01/97-08/31/98)

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR002584-13
Application #
6335269
Study Section
Project Start
2000-08-15
Project End
2001-08-14
Budget Start
1998-10-01
Budget End
1999-09-30
Support Year
13
Fiscal Year
2000
Total Cost
$13,906
Indirect Cost
City
Dallas
State
TX
Country
United States
Zip Code
75390
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