Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1995-07-31
2000-08-22
Woodward, Michael P.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424489, 424491, 424493, 424548, 514 54, 514 62, 530322, 536 54, A61K 31726
Patent
active
061068667
ABSTRACT:
A drug carrier composition comprising a drug complexed with dermatan sulfate is disclosed. The drug is preferably an anti tumor drug and may be taxol, a peptide onco-agent or vincristine. The most preferred antitumor drug is doxorubicin. The dermatan sulfate is essentially purified dermatan sulfate with a sulfur content of up to 9% (w/w) and with selective oligosaccharide oversulfation. The compositions are administered in a fashion that allows efficient vascular access and induces the following in vivo effects: 1) rapid, partial or total endothelial envelopment of the drug (diagnostic) carrier; 2) sequestration of the carrier and protection of the entrapped agent from blood vascular clearance at an early time (2 minutes) when the endothelial pocket which envelops the carrier still invaginates into the vascular compartment; 3) acceleration of the carrier's transport across and/or through the vascular endothelium or subendothelial structures into the tissue compartment (interstitium); and 4) improvement of the efficiency with which the drug migrates across the endothelium, or epi-endothelial or subendothelial barriers, such that a lower total drug dose is required to obtain the desired effect relative to that required for standard agents. Analogous tissue uptake is described for transepithelial migration into the lungs, bladder and bowel.
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Lopes et
Access Pharmaceuticals Inc.
Woodward Michael P.
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