Polyamino-polycarbonyl Moiety Attached To Or Complexed With The Metal Patents (Class 424/9.364)
  • Patent number: 6312664
    Abstract: A macromolecular contrast agent for magnetic resonance imaging of the vascular system is constructed of a polymeric backbone structure with a plurality of spacer arms bonded to the backbone structure, each spacer arm terminating in at least one paramagnetic complex. The polymeric backbone thus serves as an amplifier by supporting a multitude of paramagnetic complexes, and the spacer arms contribute to the molecular weight. The spacer arms further contribute useful properties to the agent, such as hydrophilicity and the ability to cleave at a relatively rapid rate in blood.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: November 6, 2001
    Assignee: The Regents of the University of California
    Inventors: Robert C. Brasch, Jeffry S. Mann, Danute E. Nitecki
  • Publication number: 20010034363
    Abstract: Disclosed are water soluble compositions of paclitaxel and docetaxel formed by conjugating the paclitaxel or docetaxel to a water soluble polymer such as poly-glutamic acid, poly-aspartic acid or poly-lysine. Also disclosed are methods of using the compositions for treatment of tumors, auto-immune disorders such as rheumatoid arthritis. Other embodiments include the coating of implantable stents for prevention of restenosis.
    Type: Application
    Filed: March 30, 1998
    Publication date: October 25, 2001
    Inventors: CHUN LI, SIDNEY WALLACE, DONG-FANG YU, DAVID J. YANG
  • Publication number: 20010031242
    Abstract: A method for the assessment of pulmonary ventilation and lung perfusion through Magnetic Resonance Imaging (MRI), comprising the steps of:
    Type: Application
    Filed: March 28, 2001
    Publication date: October 18, 2001
    Inventors: Yannick Cremillieux, Yves Berthezene, Magalie Viallon
  • Patent number: 6303761
    Abstract: The present invention provides a triaminepentaacetic acid compound which can be used as a ligand to coordinate to a metal ion to form a paramagnetic metal complex. The paramagnetic metal complex of the present invention can be used as a contrast agent for magnetic resonance imaging (MRI).
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: October 16, 2001
    Assignee: Department of Health The Executive Yuan, Republic of China
    Inventors: Yun-Ming Wang, Gin-Chung Liu, Chien-Hsun Lee, Reu-Sheng Sheu
  • Publication number: 20010028877
    Abstract: In a method for characterizing the angiogenesis status of a tumor in a living subject, timed magnetic resonance images of the subject into whom a reptating polymer contrast agent containing chelating diethylentriaminepentacetic acid dosed with gadolinum has been introduced are obtained. At least two images taken at different times are compared in order to determine the percentage image enhancement in a tumor region of interest.
    Type: Application
    Filed: February 23, 2001
    Publication date: October 11, 2001
    Inventor: Egidijus Edward Uzgiris
  • Patent number: 6254850
    Abstract: The invention relates to diethylenetriaminepentaacetic acid derivatives, their complexes and complex salts, containing an element of atomic numbers 20-32, 39-51 or 57-83, pharmaceutical agents containing these compounds, their use as contrast media and antidotes and process for their production.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: July 3, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Werner Krause, Franz-Karl Maier, Michael Bauer, Gabriele Schuhmann-Giampieri, Wolf-Rudiger Press, Peter Muschik
  • Patent number: 6248306
    Abstract: Cascade polymer complexes containing a) complexing ligands of general formula I A—{X—[Y—(Z—( W—Kw)z)y]x}a  (I)  in which A stands for a nitrogen-containing cascade nucleus of base multiplicity a, X and Y, independently of one another, stand for a direct bond or a cascade reproduction unit of reproduction multiplicity x or y, Z and W, independently of one another, stand for a cascade reproduction unit of reproduction multiplicity z or w, K stands for the radical of a complexing agent, a stands for numbers 2 to 12, x, y, z and w, independently of one another, stand for numbers 1 to 4, provided that at least two reproduction units are different and that 16≦a·x·y·z·w≦64 holds true for the product of the multiplicities, b) at least 16 ions of an element of atomic numbers 20 to 29, 39, 42, 44 or 57-83 and c) optionally cations of inorganic and/or organic bases, amino acids or amino acid amides are valuab
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 19, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Heribert Schmitt-Willich, Johannes Platzek, Ulrich Niedballa, Bernd Raduchel, Andreas Muhler, Thomas Frenzel, Wolfgang Ebert
  • Patent number: 6232295
    Abstract: A delivery vehicle is described that is capable of being specifically bound to and taken into targeted cells, delivering numerous paramagnetic ions for magnetic resonance imaging (MRI) of the cells. The delivery vehicle comprises a polymeric molecule having a net positive charge complexed with another polymeric molecule having a net negative charge. Cell targeting moieties and MRI contrast agents are attached to one or both of the polymeric molecules. In one embodiment, the polymeric molecule having a net negative charge is a nucleic acid. Thus, the delivery vehicles can be used in clinical protocols in which nucleic acids for gene therapy and agents for MRI contrast are co-transported to specific cells allowing medical imaging monitoring of nucleic acid delivery.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: May 15, 2001
    Inventors: Jon Faiz Kayyem, Thomas J. Meade, Scott E. Fraser
  • Patent number: 6193950
    Abstract: Cascade polymers, containing complex-forming ligands, optionally at least five ions of an element of atomic numbers 21-29, 39, 42, 44 or 57-83, as well as, if desired, cations of inorganic and/or organic bases, amino acids or amino acid amides, are valuable complexing compounds and complexes for diagnostics and therapy.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: February 27, 2001
    Assignee: Schering AG
    Inventors: Johannes Platzek, Heribert Schmitt-Willich, Heinz Gries, Gabriele Schuhmann-Giampieri, Hubert Vogler, Hanns-Joachim Weinmann, Hans Bauer
  • Patent number: 6183724
    Abstract: Cascade polymers, containing complex-forming ligands, optionally at least five ions of an element of atomic numbers 21-29, 39, 42, 44 or 57-83, as well as, if desired, cations of inorganic and/or organic bases, amino acids or amino acid amides, are valuable complexing compounds and complexes for diagnostics and therapy.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: February 6, 2001
    Assignee: Schering Aktiengesellschaft
    Inventors: Johannes Platzek, Heribert Schmitt-Willich, Heinz Gries, Gabriele Schumann-Giampieri, Hubert Vogler, Hanns-Joachim Weinmann, Hans Bauer
  • Patent number: 6177060
    Abstract: Cascade polymer complexes with at least 16 ions of an element of atomic numbers 20 to 29, 39, 42, 44 or 57-83, useful NMR or x-ray lymphography imaging.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: January 23, 2001
    Assignee: Schering Aktiengeseuschaft
    Inventors: Heribert Schmitt-Willich, Johannes Platzek, Bernd Rad{umlaut over (u)}chel, Andreas M{umlaut over (u)}hler, Thomas Frenzel