CA2108192A1 - Use of tyloxapol as a nanoparticle stabilizer and dispersant - Google Patents

Use of tyloxapol as a nanoparticle stabilizer and dispersant

Info

Publication number
CA2108192A1
CA2108192A1 CA002108192A CA2108192A CA2108192A1 CA 2108192 A1 CA2108192 A1 CA 2108192A1 CA 002108192 A CA002108192 A CA 002108192A CA 2108192 A CA2108192 A CA 2108192A CA 2108192 A1 CA2108192 A1 CA 2108192A1
Authority
CA
Canada
Prior art keywords
tyloxapol
nanoparticles
adsorbed
nanoparticle
dispersant
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002108192A
Other languages
French (fr)
Other versions
CA2108192C (en
Inventor
Siegfried K. June
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elan Pharma International Ltd
Original Assignee
Sterling Winthrop Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25536608&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2108192(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sterling Winthrop Inc filed Critical Sterling Winthrop Inc
Publication of CA2108192A1 publication Critical patent/CA2108192A1/en
Application granted granted Critical
Publication of CA2108192C publication Critical patent/CA2108192C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
    • 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
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0031—Rectum, anus
    • 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
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • 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
    • A61K9/08—Solutions
    • 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
    • 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
    • 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

Abstract

The present invention is directed to a composition comprised of nanoparticles having tyloxapol adsorbed on the surface thereof. In a preferred embodiment, said nanoparticle contains a diagnostic or therapeutic agent therein. In a further preferred embodiment, the nanoparticles contain a further surface modifier associated therewith. This invention further discloses a method of making nanoparticles having tyloxapol adsorbed on the surface, said method comprising contacting said nanoparticles with tyloxapol for a time and under conditions sufficient to provide a nanoparticle-tyloxapol composition. The present invention is also directed to a method of diagnosis comprising administering to a mammal a contrast effective amount of particles of nanoparticles having tyloxapol adsorbed on the surface thereof, and generating a diagnostic image of said mammal.
CA002108192A 1992-12-15 1993-10-12 Use of tyloxapol as a nanoparticle stabilizer and dispersant Expired - Fee Related CA2108192C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US990,874 1992-12-15
US07/990,874 US5429824A (en) 1992-12-15 1992-12-15 Use of tyloxapole as a nanoparticle stabilizer and dispersant

Publications (2)

Publication Number Publication Date
CA2108192A1 true CA2108192A1 (en) 1994-06-16
CA2108192C CA2108192C (en) 2007-07-03

Family

ID=25536608

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002108192A Expired - Fee Related CA2108192C (en) 1992-12-15 1993-10-12 Use of tyloxapol as a nanoparticle stabilizer and dispersant

Country Status (24)

Country Link
US (1) US5429824A (en)
EP (1) EP0602702B1 (en)
JP (3) JPH06199658A (en)
KR (1) KR100320390B1 (en)
AT (1) ATE178788T1 (en)
AU (1) AU665669B2 (en)
CA (1) CA2108192C (en)
CZ (1) CZ274793A3 (en)
DE (1) DE69324456T2 (en)
DK (1) DK0602702T3 (en)
ES (1) ES2130217T3 (en)
FI (1) FI935395A (en)
GR (1) GR3030059T3 (en)
HU (1) HU219333B (en)
IL (1) IL107874A (en)
MX (1) MX9306010A (en)
MY (1) MY110186A (en)
NO (1) NO310543B1 (en)
NZ (1) NZ248726A (en)
PH (1) PH29957A (en)
RU (1) RU2124886C1 (en)
SK (1) SK280614B6 (en)
TW (1) TW440451B (en)
UA (1) UA27760C2 (en)

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