.

Pharmaceutical Business Intelligence

  • Anticipate P&T budget requirements
  • Evaluate market entry opportunities
  • Find generic sources and suppliers
  • Predict branded drug patent expiration

► Plans and Pricing

Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

DrugPatentWatch Database Preview

Details for Patent: 5,736,339

« Back to Dashboard

Details for Patent: 5,736,339

Title: Method utilizing purified GP IIb-IIIa to detect the presence of platelet aggregation inhibitors
Abstract:An assay for screening snake venom for the presence or absence of platelet aggregation inhibitors (PAIs) based on specific receptor binding is described. Using this assay, the identification and characterization of PAIs in a wide range of snake venom samples was accomplished. The isolated and purified PAI from several of these active snake venoms is described and characterized. In addition, PAIs lacking the Arg-Gly-Asp (RGD) adhesion sequence but containing K*-(G/Sar)-D wherein K* is a modified lysyl residue of the formula R.sup.1.sub.2 N(CH.sub.2).sub.4 CHNHCO-- wherein each R.sup.1 is independently H, alkyl(1-6C) or at most one R.sup.1 is R.sup.2 --C.dbd.NR.sup.3 wherein R.sup.2 is H, alkyl(1-6C) or is NR.sup.4.sub.2 in which each R.sup.4 is independently H or alkyl(1-6C) and R.sup.3 is H, alkyl(1-6C), phenyl or benzyl, or R.sub.2 --C.dbd.NR.sup.3 is a radical selected from the group consisting of: ##STR1## where m is an integer of 2-3, and each R.sup.5 is independently H or alkyl(1-6C); and wherein one or two (CH.sub.2) may be replaced by O or S provided said O or S is not adjacent to another heteroatom are prepared and shown to specifically inhibit the binding of fibrinogen or yon Willebrand Factor to GP IIb-IIIa.
Inventor(s): Scarborough; Robert M. (Belmont, CA), Wolf; David Lawrence (Palo Alto, CA), Charo; Israel F. (Lafayette, CA)
Assignee: COR Therapeutics, Inc. (South San Francisco, CA)
Filing Date:Jun 05, 1995
Application Number:08/463,986
Claims:1. A method to determine the presence or absence of platelet aggregation inhibitor (PAI) activity in a biological fluid, which method comprises:

contacting a sample of said fluid with a solid support coated with purified platelet GP IIb-IIIa in the presence of a solution of fibrinogen (Fg) or von Willebrand Factor (vWF) under conditions wherein Fg or vWF binds to said GP IIb-IIIa, and

detecting the decrease or lack of decrease in the binding of Fg or vWF to GP IIb-IIIa in comparison to the binding of Fg or vWF to GP IIb-IIIa in a control which does not contain biological fluid.
« Back to Dashboard

For more information try a trial or see the database preview and plans and pricing

How are People Using DrugPatentWatch?

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

`abc