Related Experiment Video
Updated: Jun 11, 2026

PLGA Nanoparticles Formed by Single- or Double-emulsion with Vitamin E-TPGS
Published on: December 27, 2013
Mechanistic Model for Drug Release from PLGA-Based Biodegradable Implants for In Vitro Release Testing: Development
Naresh Mittapelly1, Alexandre Djehizian1, Krishna Chaitanya Telaprolu1
1Certara Predictive Technologies (CPT), Simcyp Division, Level 2-Acero, 1 Concourse Way, Sheffield S1 2BJ, U.K.
A new mechanistic model predicts drug release from polylactide coglycolide (PLGA) implants by analyzing critical quality attributes and release processes. This model aids in optimizing PLGA formulation design for effective drug delivery.
Area of Science:
- Polymer science and drug delivery systems.
- Biomaterials and pharmaceutical engineering.
Background:
- Drug release from polylactide coglycolide (PLGA) formulations is influenced by numerous factors.
- Understanding these factors is key to optimizing drug release profiles for specific applications.
Purpose of the Study:
- To develop a mechanistic model for predicting *in vitro* drug release from PLGA-based solid implants.
- To incorporate critical quality attributes (CQAs) and key release mechanisms into the model.
Main Methods:
- Developed a mechanistic model for *in vitro* drug release from PLGA implants.
- The model integrates polymer hydrolysis, drug dissolution, diffusion, and medium influx.
- Validated the model using *in vitro* release data for four different drugs.
Main Results:
- The model accurately accounts for critical quality attributes and release rate processes.
- Validated model successfully predicted release profiles for buserelin, afamelanotide, brimonidine, and nafarelin implants.
- Demonstrated the model's potential for optimizing PLGA formulation design.
Conclusions:
- The developed mechanistic model offers valuable insights into drug release kinetics from PLGA implants.
- Coupling this model with PBPK modeling can predict *in vivo* performance and support bioequivalence studies.
More Related Videos
09:31Sustained Administration of β-cell Mitogens to Intact Mouse Islets Ex Vivo Using Biodegradable Poly(lactic-co-glycolic acid) Microspheres
Published on: November 5, 2016
14:49Direct and Indirect Culture Methods for Studying Biodegradable Implant Materials In Vitro
Published on: April 15, 2022
Related Concept Videos
In Vitro Drug Release Testing: Overview, Development and Validation
In Vitro Drug Dissolution: Compendial Testing Models I
Modified-Release Drug Delivery Systems: Rate-Programmed II
Modified-Release Drug Delivery Systems: Drug Release Characteristics
Modified-Release Drug Delivery Systems: Rate-Programmed I
Modified-Release Drug Delivery Systems: Stimuli-Activated