What does Site-specific chemical delivery require?
Prodrug reaches the target site and then enzymatic or chemical processes exist at the target site to release the active drug
Factors Involved with Successful Site-Specific Drug Delivery:
Extent of target organ perfusion
Rate of conversion of prodrug to active drug
Input/output rates of prodrug and drug from the target sites
Additional Carrier Systems Evaluated for Drug Delivery
Proteins
Polysaccharides
Liposomes
Emulsions- oil and water
Cellular carriers (rbc/wbc)
Magnetic controlled targeting
Implanted mechanical pumps
Understand what constitutes a polymeric drug complex
Prodrug must be readily transported to the site of action and rapidly absorbed at the site
Upon arrival at the target site, the prodrug should be selectively converted to (active compoent) drug relative to its rate of conversion at nontarget sites
Distinguish between a polymeric drug complex and a targeted polymeric drug complex
Advantages and disadvantages
Types of polymers used to develop a polymeric drug complex (PEG, micelles, dendrimers)
Describe advantages and disadvantages between systems (ex. drug carrying capacity)
Understand the means of linker cleavage
–Chemical/enzymes, pH, and light