Title:
【発明の名称】部位選択的局在,取込み機構,感受性および動態空間像を改善する酸性サッカライドおよびグリコサミノグリカンとの金属イオンキレートからなる内用剤
Document Type and Number:
Japanese Patent JPH09509650
Kind Code:
A
Abstract:
This application concerns novel agents comprising cationic or chemically basic metal chelators in association with hydrophilic carriers of anionic or chemically acidic saccharides, sulfatoids and glycosaminoglycans. In certain embodiments, the agents comprise metals and metal ions. Covalent and non-covalent chemical and physical means are described for stabilizing the binding of the metal chelators to the carriers. Novel non-covalently bound compositions are described which give uniquely high payloads and ratio of metal chelator to carrier, ranging from a low of about 15% metal chelator by weight, to a characteristic range of 70% to 90% metal chelator by weight. Specific embodiments are described comprising deferoxamine, ferrioxamine, iron-basic porphine, iron-triethylenetetraamine, gadolinium DTPA-lysine, gadolinium DOTA-lysine and gadolinium with basic derivatives of porphyrins, porphines, expanded porphyrins, Texaphyrins and sapphyrins as the basic or cationic metal chelators, which are in turn, bound to acidic or anionic carriers, including one or more of acidic or anionic saccharides, and including sulfated sucrose, pentosan polysulfate, dermatan sulfate, oversulfated dermatan sulfate, chondroitin sulfate, oversulfated chondroitin sulfate, heparan sulfate, beef heparin, porcine heparin, non-anticoagulant heparins, and other native and modified acidic saccharides and glycosaminoglycans. Also disclosed are methods of enhancing in vivo imgages arising from induced magnetic resonance signals, methods of enhancing in vivo images in conjunction with ultrasound or X-rays and methods of obtaining in vivo body images utilizing radioisotope containing agents. Methods of treating vasular disease are also disclosed.
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Inventors:
Rani, David F.
Application Number:
JP51527795A
Publication Date:
September 30, 1997
Filing Date:
November 29, 1994
Export Citation:
Assignee:
Access Pharmaceuticals, Incorporated
International Classes:
A61K49/00; A61K49/08; A61K49/12; A61K49/18; A61K51/06; C08B37/00; (IPC1-7): A61K49/00; C08B37/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)