Development of polymeric drug delivery system for recognizing vascular endothelial dysfunction.

Area of Science:

• Biomaterials Science
• Nanotechnology
• Cardiovascular Research

Background:

• The vascular endothelium is crucial for maintaining vascular homeostasis.
• Endothelial damage contributes to cardiovascular diseases like arteriosclerosis.
• Early detection of endothelial dysfunction is vital for diagnosis and therapy.

Purpose of the Study:

• To synthesize a polymeric drug carrier for detecting and treating endothelium injury.
• To evaluate the nanoparticle's ability to encapsulate and release doxorubicin (DOX).
• To assess the carrier's specific adsorption to injured endothelium.

Main Methods:

• Synthesis of a polymeric drug carrier with an Evans blue analogue probing unit.
• Formation of stable nanoparticles with a micelle-like structure in aqueous media.
• Encapsulation and in vitro release studies of doxorubicin (DOX).
• Adsorption studies using extracted porcine aorta with induced endothelium injury.

Main Results:

• The polymeric carrier formed stable nanoparticles capable of encapsulating doxorubicin (DOX).
• Sustained release of DOX was observed over 10-60 hours.
• The nanoparticles demonstrated specific adsorption to endothelium-injured sites in porcine aorta.

Conclusions:

• The developed polymeric drug carrier shows potential for targeted drug delivery to dysfunctional endothelium.
• This system could facilitate early diagnosis and effective treatment of cardiovascular diseases.
• The nanoparticle's properties are suitable for localized therapy in endothelium-impaired regions.