WO1996020735A3 - Oral gastrointestinal x-ray contrast agents in combination with surfactants - Google Patents

Oral gastrointestinal x-ray contrast agents in combination with surfactants Download PDF

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Publication number
WO1996020735A3
WO1996020735A3 PCT/US1995/016447 US9516447W WO9620735A3 WO 1996020735 A3 WO1996020735 A3 WO 1996020735A3 US 9516447 W US9516447 W US 9516447W WO 9620735 A3 WO9620735 A3 WO 9620735A3
Authority
WO
WIPO (PCT)
Prior art keywords
contrast agents
ray contrast
surfactants
combination
oral gastrointestinal
Prior art date
Application number
PCT/US1995/016447
Other languages
French (fr)
Other versions
WO1996020735A2 (en
Inventor
Gary Liversidge
W Mark Eickhoff
Kathleen J Illig
Pramod Sarpotdar
Stephen B Ruddy
Original Assignee
Eastman Kodak Co
Gary Liversidge
W Mark Eickhoff
Kathleen J Illig
Pramod Sarpotdar
Stephen B Ruddy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co, Gary Liversidge, W Mark Eickhoff, Kathleen J Illig, Pramod Sarpotdar, Stephen B Ruddy filed Critical Eastman Kodak Co
Priority to AU44718/96A priority Critical patent/AU4471896A/en
Publication of WO1996020735A2 publication Critical patent/WO1996020735A2/en
Publication of WO1996020735A3 publication Critical patent/WO1996020735A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/04—X-ray contrast preparations
    • A61K49/0433—X-ray contrast preparations containing an organic halogenated X-ray contrast-enhancing agent
    • A61K49/0447—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is a halogenated organic compound
    • A61K49/0476—Particles, beads, capsules, spheres
    • A61K49/0485—Nanoparticles, nanobeads, nanospheres, nanocapsules, i.e. having a size or diameter smaller than 1 micrometer
    • A61K49/049—Surface-modified nanoparticles, e.g. immune-nanoparticles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/04—X-ray contrast preparations
    • A61K49/0409—Physical forms of mixtures of two different X-ray contrast-enhancing agents, containing at least one X-ray contrast-enhancing agent which is not a halogenated organic compound
    • A61K49/0414—Particles, beads, capsules or spheres
    • A61K49/0423—Nanoparticles, nanobeads, nanospheres, nanocapsules, i.e. having a size or diameter smaller than 1 micrometer
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
    • A61K9/141—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers
    • A61K9/146—Intimate drug-carrier mixtures characterised by the carrier, e.g. ordered mixtures, adsorbates, solid solutions, eutectica, co-dried, co-solubilised, co-kneaded, co-milled, co-ground products, co-precipitates, co-evaporates, co-extrudates, co-melts; Drug nanoparticles with adsorbed surface modifiers with organic macromolecular compounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
    • A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
    • A61K9/51—Nanocapsules; Nanoparticles
    • A61K9/5107—Excipients; Inactive ingredients
    • A61K9/513—Organic macromolecular compounds; Dendrimers
    • A61K9/5146—Organic macromolecular compounds; Dendrimers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyamines, polyanhydrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/902—Specified use of nanostructure
    • Y10S977/904—Specified use of nanostructure for medical, immunological, body treatment, or diagnosis
    • Y10S977/906—Drug delivery

Abstract

Nanoparticulate crystalline x-ray contrast agents are formulated with stabilizers to enhance contact between the crystalline x-ray contrast agents and the gastrointestinal tract. Nanoparticulate crystalline therapeutic substances also formulated with stabilizers to enhance contact between the crystalline therapeutic substances and the gastrointestinal tract and to provide extended therapeutic effect.
PCT/US1995/016447 1994-12-30 1995-12-04 Oral gastrointestinal x-ray contrast agents in combination with surfactants WO1996020735A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44718/96A AU4471896A (en) 1994-12-30 1995-12-04 Oral gastrointestinal x-ray contrast agents in combination with surfactants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/366,841 US5628981A (en) 1994-12-30 1994-12-30 Formulations of oral gastrointestinal diagnostic x-ray contrast agents and oral gastrointestinal therapeutic agents
US08/366,841 1994-12-30

Publications (2)

Publication Number Publication Date
WO1996020735A2 WO1996020735A2 (en) 1996-07-11
WO1996020735A3 true WO1996020735A3 (en) 1996-10-10

Family

ID=23444790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/016447 WO1996020735A2 (en) 1994-12-30 1995-12-04 Oral gastrointestinal x-ray contrast agents in combination with surfactants

Country Status (3)

Country Link
US (3) US5628981A (en)
AU (1) AU4471896A (en)
WO (1) WO1996020735A2 (en)

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US6432381B2 (en) 2002-08-13
US20010006617A1 (en) 2001-07-05
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US20030054045A1 (en) 2003-03-20
AU4471896A (en) 1996-07-24

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