PARTICLE COMPOSITION AND MEDICINAL COMPOSITION COMPRISING SAME

The present invention provides a particulate composition containing: block copolymer units being arranged radially with hydrophobic polymer-chain segments radially inside and hydrophilic polymer-chain segments radially outside; and a charged lipid which carries a charge opposite to the charge of a d...

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Bibliographic Details
Main Authors ISHII, ATSUSHI, KATO, YASUKI
Format Patent
LanguageEnglish
French
German
Published 11.07.2012
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
ENZYMOLOGY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
VINEGAR
WINE
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Summary:The present invention provides a particulate composition containing: block copolymer units being arranged radially with hydrophobic polymer-chain segments radially inside and hydrophilic polymer-chain segments radially outside; and a charged lipid which carries a charge opposite to the charge of a drug to be encapsulated, the charged lipid being attracted to the hydrophobic polymer-chain segment. In this particulate composition, the drug is retained within the particle via electrostatic binding with the charged lipid, whereby the outer surface of the particle is prevented from being charged to attract a substance which has a charge opposite to that of the charged lipid.
Bibliography:Application Number: EP20100812082