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Related Concept Videos

Transdermal Drug Delivery Systems01:18

Transdermal Drug Delivery Systems

Transdermal drug delivery systems (TDDS) enable the controlled release of drugs across the skin into systemic circulation. They are particularly advantageous for drugs with short half-lives or narrow therapeutic indices, as they maintain consistent plasma concentrations and reduce the risk of subtherapeutic or toxic levels.TDDS are categorized into monolithic, reservoir, and mixed systems. Monolithic systems embed the drug in a polymer matrix, where diffusion governs release. Reservoir systems...
Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices01:28

Parenteral Drug Delivery Systems: Injectables, Implants, and Infusion Devices

Parenteral drug delivery systems play a crucial role in modern therapeutics by enabling the direct administration of drugs into the systemic circulation, bypassing the gastrointestinal tract. These systems are particularly valuable for poorly absorbed oral medications that are unstable in the digestive environment or require rapid onset or sustained therapeutic levels. Delivery is achieved through intravenous, intramuscular, or subcutaneous routes, each selected based on the drug's properties...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
Routes of Drug Administration: Parenteral01:25

Routes of Drug Administration: Parenteral

The administration of drugs via parenteral routes allows for direct drug introduction into the systemic circulation, resulting in high bioavailability because the medication bypasses the harsh conditions of the gastrointestinal tract and hepatic metabolism.
The intravenous route (IV) of drug administration can be further categorized into two types. The bolus injection administers the entire dose rapidly, while an intravenous infusion slowly delivers smaller doses steadily.
The IV route is often...
Intrauterine Drug Delivery Systems01:21

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...

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Related Experiment Video

Updated: Jun 5, 2026

Whole-animal Imaging and Flow Cytometric Techniques for Analysis of Antigen-specific CD8+ T Cell Responses after Nanoparticle Vaccination
11:07

Whole-animal Imaging and Flow Cytometric Techniques for Analysis of Antigen-specific CD8+ T Cell Responses after Nanoparticle Vaccination

Published on: April 29, 2015

Colloidal carrier systems for transcutaneous immunization.

Prem N Gupta1, Suresh P Vyas

  • 1School of Pharmacy, Medical Biology Centre, Queens University of Belfast, 97 Lisburn Road, Belfast BT97BL, UK. p.gupta@qub.ac.uk

Current Drug Targets
|January 14, 2011
PubMed
Summary
This summary is machine-generated.

Transcutaneous immunization offers a needle-free, non-invasive vaccine delivery method by applying antigens to the skin. This approach leverages the skin's immune cells for effective disease prevention.

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Area of Science:

  • Immunology
  • Dermatology
  • Vaccinology

Background:

  • The skin is a highly immune-reactive tissue with abundant antigen-presenting cells, particularly in the epidermis.
  • Transcutaneous immunization involves topical antigen application to intact skin, offering a needle-free alternative to traditional injections.

Purpose of the Study:

  • To review topical delivery considerations for vaccines.
  • To explore novel delivery systems for transcutaneous vaccine delivery.

Main Methods:

  • Review of existing literature on transcutaneous immunization strategies.
  • Discussion of physical, chemical, and carrier-based methods for topical vaccine delivery.

Main Results:

  • Transcutaneous immunization elicits systemic and cell-mediated immune responses.
  • Novel vaccine carrier systems show potential for non-invasive antigen delivery.

Conclusions:

  • Transcutaneous immunization is a viable, cost-effective strategy for disease prevention.
  • Specially designed vaccine carriers are promising for non-invasive antigen delivery via the skin.