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Mechanisms Physical mechanisms, also referred to as controlled drug delivery systems, includine Osmosis, diffusion erosion dissolution and electrotransport 12
12 Mechanisms • Physical mechanisms, also referred to as controlled drug delivery systems, including： • Osmosis, diffusion, • erosion, dissolution, • and eletrotransport
Mechanisms Biochemical mechanisms, includ ing Monoclonal antibodies .Gene therapy and vector systems ◆ Polymer drug abducts ◆ Liposomes water-soluble act gradient oil-soluble activ phospholipid
13 Mechanisms Biochemical mechanisms, including: ◆Monoclonal antibodies, ◆Gene therapy and vector systems, ◆Polymer drug abducts ◆Liposomes
Composition New drug delivery systems base on polymer technologles The polymers rang from naturally derived substances, such as gelatin and sugars, to the more ° complex polymers
14 Composition • New drug delivery systems base on polymer technologies. • The polymers rang from naturally derived substances, such as gelatin and sugars, to the more • complex polymers
Composition For example, degradable bonds can be used to attach an active drug to a synthetic or naturally occurring polymer-thi is is usually called Bioconjugates 15
15 Composition • For example, degradable bonds can be used to attach an active drug to a synthetic or naturally occurring polymer—this is usually called Bioconjugates