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Comparison of Ultrasound Contrast between H2O2-Responsive Nanoparticles and Microbubble Contrast According to Muscle
Da-Sol Kim1,2, Nanhee Song3,4, Dongwon Lee3,4
1Department of Physical Medicine and Rehabilitation, Jeonbuk National University Medical School, Jeonju 54907, Republic of Korea.
Diagnostics (Basel, Switzerland)
|November 14, 2023
Summary
This study compares microbubble and nanoparticle ultrasound contrast agents for diagnosing muscle injuries. Poly(vanillinoxalate) nanoparticles demonstrated superior, longer-lasting contrast enhancement in various muscle injury models compared to microbubbles.
Area of Science:
- Musculoskeletal Disorders
- Diagnostic Imaging
- Biomedical Engineering
Background:
- Ultrasound contrast agents are vital for internal organ diagnosis but underutilized in musculoskeletal disorders.
- This study investigates novel nanoparticle contrast agents alongside established microbubble agents for muscle injury imaging.
Purpose of the Study:
- To comparatively analyze ultrasonographic imaging differences between microbubble and nanoparticle contrast agents in various rat muscle injury models.
- To evaluate the efficacy and characteristics of poly(vanillinoxalate) (PVO) nanoparticles as an H2O2-responsive ultrasound contrast agent for muscle injuries.
Main Methods:
- Created rat models for sham, laceration, punch, contusion, and toxin-induced muscle injuries.
- Administered clinically used SonoVue® (microbubble) and researched PVO (nanoparticle) contrast agents via peri-injury injection.
- Quantified echogenicity changes using J-image software and measured H2O2 levels via Amplex Red assay.
Main Results:
- PVO nanoparticles showed immediate and sustained contrast enhancement at lesion sites, lasting over 3 hours.
- SonoVue® exhibited a widespread echo signal pattern with less clear retention at the lesion site.
- Statistically significant differences in echogenicity were observed between PVO and SonoVue® across all injury models.
Conclusions:
- PVO nanoparticles offer potential for physiological contrast in muscle injuries due to H2O2 responsiveness.
- SonoVue® demonstrated a pooling effect but with shorter contrast duration.
- Further research into nanoparticle and microbubble contrast agents is warranted for enhanced musculoskeletal disorder diagnostics.
