WO2008149096A3 - Polymeric microparticles - Google Patents
Polymeric microparticles Download PDFInfo
- Publication number
- WO2008149096A3 WO2008149096A3 PCT/GB2008/001926 GB2008001926W WO2008149096A3 WO 2008149096 A3 WO2008149096 A3 WO 2008149096A3 GB 2008001926 W GB2008001926 W GB 2008001926W WO 2008149096 A3 WO2008149096 A3 WO 2008149096A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microparticles
- polymer
- active compound
- pharmaceutically active
- coated
- Prior art date
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
- A61K9/5005—Wall or coating material
- A61K9/501—Inorganic 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
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
- A61K9/1605—Excipients; Inactive ingredients
- A61K9/1629—Organic macromolecular compounds
- A61K9/1641—Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, poloxamers
- A61K9/1647—Polyesters, e.g. poly(lactide-co-glycolide)
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Inorganic Chemistry (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention provides a microparticle which comprises a polymer, an anionic surfactant, and a hydrophilic pharmaceutically active compound encapsulated in said polymer. The invention further provides a coated microparticle comprising (i) a core, which core comprises a polymer, an anionic surfactant, and a hydrophilic pharmaceutically active compound, which pharmaceutically active compound is encapsulated in said polymer; and (ii) an outer layer which comprises calcium phosphate. The invention further relates to processes for producing the microparticles and coated microparticles; substrates, implants, tissue engineering scaffolds and injectable formulations comprising the coated microparticles; and uses of the microparticles, coated microparticles, substrates, implants, tissue engineering scaffolds and injectable formulations as drug delivery agents and in the treatment of conditions such as bone disorders.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0711007.5 | 2007-06-07 | ||
GB0711007A GB0711007D0 (en) | 2007-06-07 | 2007-06-07 | Polymeric microparticles |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008149096A2 WO2008149096A2 (en) | 2008-12-11 |
WO2008149096A3 true WO2008149096A3 (en) | 2009-04-16 |
Family
ID=38318953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2008/001926 WO2008149096A2 (en) | 2007-06-07 | 2008-06-06 | Polymeric microparticles |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0711007D0 (en) |
WO (1) | WO2008149096A2 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8685432B2 (en) | 2008-03-25 | 2014-04-01 | University Of Utah Research Foundation | Controlled release tissue graft combination biomaterials |
GB0903810D0 (en) * | 2009-03-05 | 2009-04-22 | Regentec Ltd | Delivery system |
EP2338480A1 (en) * | 2009-12-22 | 2011-06-29 | LEK Pharmaceuticals d.d. | Coating of particles comprising a pharmaceutically active ingredient with a carbonate salt or phosphate salt |
EP2642984B1 (en) | 2010-11-24 | 2017-01-11 | Nanyang Technological University | Method for encapsulating particles |
SG10201509138XA (en) * | 2010-11-24 | 2015-12-30 | Univ Nanyang Tech | Method for coating particles with calcium phosphate and particles, microparticles and nanoparticles formed thereof |
US9180094B2 (en) | 2011-10-12 | 2015-11-10 | The Texas A&M University System | High porosity materials, scaffolds, and method of making |
JP5909796B2 (en) * | 2012-03-02 | 2016-04-27 | 株式会社サンギ | Method for improving water solubility of poorly soluble substances |
WO2014123978A2 (en) | 2013-02-05 | 2014-08-14 | University Of Utah Research Foundation | Implantable devices for bone or joint defects |
US10363215B2 (en) | 2013-11-08 | 2019-07-30 | The Texas A&M University System | Porous microparticles with high loading efficiencies |
CN107497376B (en) * | 2017-10-20 | 2020-02-07 | 南京工程学院 | Preparation method of hydrophobic oleophylic polymer composite microspheres |
DE102018003770A1 (en) * | 2018-05-09 | 2019-11-14 | Forschungszentrum Borstel | Nanocontainers for the transport of nonpolar, lipophilic substances such as antibiotics |
CN111249533B (en) * | 2020-01-09 | 2021-01-08 | 中国人民解放军总医院 | Composite aperture electrostatic spinning bracket modified by desferrioxamine sustained-release microbubbles and preparation method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000000177A1 (en) * | 1998-06-26 | 2000-01-06 | Isis Innovation Limited | Calcium phosphate coated vesicles |
EP1044683A1 (en) * | 1999-04-15 | 2000-10-18 | Debio Recherche Pharmaceutique S.A. | One-step dispersion method for the microencapsulation of water soluble substances |
CN1437933A (en) * | 2003-03-28 | 2003-08-27 | 中国科学院长春应用化学研究所 | Method for preparing Rifampiciu microballs covered by degradable high-molecular material |
JP2004008837A (en) * | 2002-06-03 | 2004-01-15 | Miyazaki Prefecture | S/o suspension, s/o/w emulsion, and their manufacturing method |
JP2004099442A (en) * | 2002-09-04 | 2004-04-02 | Nisshin Pharma Inc | Pharmaceutical preparation containing sparingly soluble drug and method for producing the same |
US20040208936A1 (en) * | 2002-07-22 | 2004-10-21 | Roland Chorin | Novel compositions |
-
2007
- 2007-06-07 GB GB0711007A patent/GB0711007D0/en not_active Ceased
-
2008
- 2008-06-06 WO PCT/GB2008/001926 patent/WO2008149096A2/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000000177A1 (en) * | 1998-06-26 | 2000-01-06 | Isis Innovation Limited | Calcium phosphate coated vesicles |
EP1044683A1 (en) * | 1999-04-15 | 2000-10-18 | Debio Recherche Pharmaceutique S.A. | One-step dispersion method for the microencapsulation of water soluble substances |
JP2004008837A (en) * | 2002-06-03 | 2004-01-15 | Miyazaki Prefecture | S/o suspension, s/o/w emulsion, and their manufacturing method |
US20040208936A1 (en) * | 2002-07-22 | 2004-10-21 | Roland Chorin | Novel compositions |
JP2004099442A (en) * | 2002-09-04 | 2004-04-02 | Nisshin Pharma Inc | Pharmaceutical preparation containing sparingly soluble drug and method for producing the same |
CN1437933A (en) * | 2003-03-28 | 2003-08-27 | 中国科学院长春应用化学研究所 | Method for preparing Rifampiciu microballs covered by degradable high-molecular material |
Non-Patent Citations (5)
Title |
---|
DATABASE CA CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; XP002515640, retrieved from STN Database accession no. 142: 379 434 * |
DATABASE CA CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; XP002515641, retrieved from STN Database accession no. 140: 82 274 * |
DATABASE WPI Week 200436, Derwent World Patents Index; AN 2004-380501, XP002515642 * |
M. STIGTER ET AL.: "Incorporation of different antibiotics into carbonated hydroxyapatite coatings on titanium implants, release and antibiotic efficacy.", JOURNAL OF CONTROLLED RELEASE, vol. 99, 2004, pages 127 - 137, XP002515639 * |
U. WEIDENAUER ET AL.: "Microencapsulation of hydrophilic drug substances using biodegradable polyesters. Part I.", J. MICROENCAPSULATION, vol. 20, no. 4, 2003, pages 509 - 524, XP001162189 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008149096A2 (en) | 2008-12-11 |
GB0711007D0 (en) | 2007-07-18 |
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