Controlled Release
Controlled Release — A drug delivery strategy designed to release a peptide at a predetermined rate over an extended period, improving research protocol convenience.
What Is Controlled Release?
Controlled release delivers a peptide at a predetermined rate over a specified period, maintaining consistent plasma concentrations. Unlike immediate-release formulations, controlled release minimizes peak-trough fluctuations.
Release Mechanisms
- Diffusion-controlled: Peptide diffuses through a polymer membrane or matrix
- Erosion-controlled: Biodegradable polymer degrades over time, releasing entrapped peptide
- Osmotic: Osmotic pressure drives peptide release at a constant rate
- Stimulus-responsive: pH-, temperature-, or enzyme-triggered release at the target site
Peptide Examples
Leuprolide (1- and 3-month depot formulations), octreotide LAR (monthly somatostatin analog), and exenatide ER (weekly GLP-1 agonist).
Frequently Asked Questions
What is Controlled Release?
A drug delivery strategy designed to release a peptide at a predetermined rate over an extended period, improving research protocol convenience.
Why is Controlled Release important in peptide research?
Controlled Release is a fundamental concept in formulation as it relates to peptide science. It directly influences experimental design, compound characterization, and the reliability of research outcomes across biochemistry and molecular biology disciplines.
Authority Sources
- Controlled Release on Wikipedia
- Search Controlled Release on PubChem (NIH)
- Research articles on ScienceDirect