Related Experiment Video
Updated: Feb 28, 2026

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles
Published on: December 23, 2016
Cyclodextrin Polymer Complexation Improves the Tolerability of Parenteral Oestradiol
Réka Révész1,2, Akay Dogan Mengenli1,2, Eleftheria Dossi3
1Doctoral School of Pharmaceutical Sciences, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary.
A novel polyethylene glycol cross-linked β-cyclodextrin (PEG-β-CD) polymer system offers a safe, water-based alternative for oestradiol delivery, potentially reducing side effects associated with oil-based menopausal hormone therapy.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Pharmacology
Background:
- Menopause involves declining oestrogen, causing symptoms impacting quality of life.
- Current oil-based parenteral oestradiol therapies have side effects like injection-site reactions.
Purpose of the Study:
- Develop and evaluate a water-soluble PEG-β-CD polymer for parenteral oestradiol delivery.
- Assess biocompatibility, solubility enhancement, immune compatibility, and pharmacokinetics of the new system.
Main Methods:
- Cytotoxicity assays (fibroblasts, macrophages), phase-solubility studies, dynamic light scattering, FTIR.
- Macrophage activation assays, RT-qPCR, in vivo toxicity testing (Galleria mellonella), pharmacokinetic studies (Wistar rats).
Main Results:
- PEG-β-CD polymer showed minimal cytotoxicity and significantly enhanced oestradiol solubility.
- Confirmed complex formation, submicron particle size, and safe in vivo profile.
- Demonstrated no immunogenic response and favorable pharmacokinetics in rats.
Conclusions:
- The PEG-β-CD polymer-oestradiol complex is a safe, water-based alternative to oil-based injections.
- This system has potential to reduce side effects and improve patient compliance in hormone therapy.
More Related Videos
10:53Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions
Published on: October 10, 2016
09:34Uptake of New Lipid-coated Nanoparticles Containing Falcarindiol by Human Mesenchymal Stem Cells
Published on: February 9, 2019
Related Concept Videos
Bioavailability Enhancement: Drug Stability Enhancement and GI Retention
Site-Targeted Drug Delivery Systems: Polymeric Carriers
Factors Affecting Dissolution: Polymorphism, Amorphism and Pseudopolymorphism
Some polymorphic crystals possess lower aqueous solubility than their amorphous counterparts, leading to incomplete absorption. For instance, the oral suspension of Chloramphenicol, which...
Intrauterine Drug Delivery Systems
Drug Delivery: Parenteral Route
There are three primary parenteral routes: intravenous (IV), intramuscular (IM), and subcutaneous (SC). The IV route introduces the drug directly into the bloodstream, ensuring immediate action. The IM route...
Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry