Abstract:
BACKGROUND:Some kinds of cations and anions are contained in body fluids such as blood, interstitial fluid, gastrointestinal juice, and tears at relatively high concentration. Ionresponsive drug delivery is available to design the unique dosage formulations which provide optimized drug therapy with effective, safe and convenient dosing of drugs. OBJECTIVE:The objective of the present review was to collect, summarize, and categorize recent research findings on ion-responsive drug delivery systems. RESULTS:Ions in body fluid/formulations caused structural changes of polymers/molecules contained in the formulations, allow formulations exhibit functions. The polymers/molecules responding to ions were ion-exchange resins/fibers, anionic or cationic polymers, polymers exhibiting transition at lower critical solution temperature, self-assemble supramolecular systems, peptides, and metalorganic frameworks. The functions of ion-responsive drug delivery systems were categorized to controlled drug release, site-specific drug release, in situ gelation, prolonged retention at the target sites, and enhancement of drug permeation. Administration of the formulations via oral, ophthalmic, transdermal, and nasal routes has showed significant advantages in the recent literatures. CONCLUSION:Many kinds of drug delivery systems responding to ions have been reported recently for several administration routes. Improvement and advancement of these systems can maximize drugs potential and contribute to patients in the world.
journal_name
Curr Drug Targetsjournal_title
Current drug targetsauthors
Yoshida T,Shakushiro K,Sako Kdoi
10.2174/1389450117666160527142138subject
Has Abstractpub_date
2018-02-08 00:00:00pages
225-238issue
3eissn
1389-4501issn
1873-5592pii
CDT-EPUB-76006journal_volume
19pub_type
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