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Environmentally-Sensitive Vesicles for Controlled Drug Delivery

Tirrell, David A. (1990) Environmentally-Sensitive Vesicles for Controlled Drug Delivery. In: Pulsed and Self-Regulated Drug Delivery. CRC Press , Boca Raton, FL, pp. 109-116. ISBN 0849345464.

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The potential uses of phospholipid vesicles in drug delivery have been widely discussed. The present chapter summarizes work from this laboratory on the preparation of lipid vesicles that release their contents in response to specific chemical or physical stimuli. Contributions to this area from other laboratories may be found in references 15-21. The unifying theme of our work has been the use of environmentally sensitive polyelectrolytes to control the structure and permeability of the phospholipid vesicle membrane. In particular, we have found that the large changes in solvation and conformation that accompany the titration of hydrophobic poly(carboxylic acid)s can be exploited to effect phospholipid reorganization from vesicular to micellar form, as illustrated in Scheme I. This idea has been elaborated, as described below, to prepare phospholipid vesicles that respond to changes in pH, temperature or glucose concentration.

Item Type:Book Section
Tirrell, David A.0000-0003-3175-4596
Additional Information:© 1990 CRC Press.
Record Number:CaltechAUTHORS:20150114-164132827
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53745
Deposited By: Anne Hormann
Deposited On:16 Jan 2015 00:57
Last Modified:03 Oct 2019 07:52

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