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Title: US5459126: Method for decreasing calcium uptake by cells using selected polycations
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Country: US United States of America

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10 pages

 
Inventor: Langer, Glenn A.; Pacific Palisades, CA
Clague, Jonathan R.; London, United Kingdom
Post, Jan A.; Nieuwegein, Netherlands

Assignee: California Institute of Technology, Pasadena, CA
other patents from CALIFORNIA INSTITUTE OF TECHNOLOGY (84480) (approx. 1,398)
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Published / Filed: 1995-10-17 / 1993-05-21

Application Number: US1993000065631

IPC Code: Advanced: A61K 31/14; A61K 38/12; A61K 38/17;
Core: more...
IPC-7: A61K 31/02; A61K 31/14; A61K 37/00;

ECLA Code: A61K31/14; A61K38/12; A61K38/17;

U.S. Class: Current: 514/002; 514/011; 514/012; 514/021; 514/642; 514/743;
Original: 514/002; 514/011; 514/642; 514/743; 514/012; 514/021;

Field of Search: 514/002,11,12,21,642,743

Government Interest:

BACKGROUND OF THE INVENTION
    This invention was made with support under Grant Number 5R01 HL28539-10 from the National Institutes of Health. Accordingly, the U.S. Government has certain rights in the invention.

Priority Number:
1993-05-21  US1993000065631

Abstract: A method for reducing calcium overload in cells to prevent the transition from reversible to irreversible injury. The cell surface is treated with an organic polycation selected from the group consisting of protamine, dodecyltrimethylammonium bromide, polymyxin B sulfate and polybrene which is capable of altering the cells surface charge sufficiently to eliminate or reduce the influx of calcium resulting from exposure to noxious stimuli. The method may be used both in vivo and in vitro. The method is effective in preventing calcium uptake in a variety of cell injury situations including metabolic inhibition and free radical attack.

Attorney, Agent or Firm: Poms, Smith, Lande & Rose ;

Primary / Asst. Examiners: Criares, Theodore J.;

Maintenance Status: CC Certificate of Correction issued
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Designated Country: CA EP JP 

Family: Show 2 known family members

First Claim:
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What is claimed is:     1. A method for reducing the uptake of calcium by a mammalian cell wherein said cell includes a surface having a surface charge, said method comprising the step of treating said cell surface with a sufficient amount of a cationic agent to alter the surface charge of said cell to reduce the uptake of calcium by said cell wherein said cationic agent is selected from the group consisting of protamine, dodecyltrimethylammonium bromide, polymyxin B sulfate and polybrene.

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U.S. References: Go to Result Set: All U.S. references   |  No patents reference this one   |   Backward references (2)   |   Citation Link

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Patent  Pub.Date  Inventor Assignee   Title
Buy PDF- 5pp US4692433  1987-09 Hostettler et al.  The Regents of the University of California Method and composition for regulating serum calcium levels of mammals
Buy PDF- 5pp US4719201  1988-01 Foker  Regents of the University of Minnesota Method for stimulating recovery from ischemia
       
Foreign References: None

Other Abstract Info: CHEMABS 122(09)096539U DERABS C95-022459

Other References:
  • Claque, et al., "Cationic Amphiphiles Prevent Calcium Leak Induced by ATP Depletion in Myocardial Cells", Jan. 1993, pp. 214-218.
  • Burton; Superoxide dismutase enhances recovery following mycardial ischemic, Am. J. of Physiol.; 248:H637-H643 (1985). (7 pages)


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