Non-Invasive Photoacoustic Imaging of In Vivo Mice with Erythrocyte Derived Optical Nanoparticles to Detect CAD/MI
| Autor: | Georges El Fakhri, Joseph C. Wu, Zhen Cheng, Yonggang Liu, Taylor Hanley, Sanjiv S. Gambhir, Hao Chen, Raiyan T. Zaman, Bahman Anvari, Steven R. Long |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Pathology medicine.medical_specialty Erythrocytes Myocardial Infarction lcsh:Medicine Bioengineering Coronary Artery Disease 030204 cardiovascular system & hematology Cardiovascular Article Photoacoustic Techniques Coronary artery disease Mice 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Fibrosis In vivo medicine Animals Nanotechnology lcsh:Science Heart Disease - Coronary Heart Disease Multidisciplinary Animal business.industry Optical Imaging lcsh:R Atherosclerosis medicine.disease Coronary Vessels Stenosis Heart Disease Good Health and Well Being 030104 developmental biology medicine.anatomical_structure Cardiovascular diseases chemistry Disease Models Nanoparticles Biomedical Imaging lcsh:Q Ligation business Indocyanine green Interventional cardiology Preclinical imaging Artery |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-9 (2020) Scientific reports, vol 10, iss 1 |
| ISSN: | 2045-2322 |
| Popis: | Coronary artery disease (CAD) causes mortality and morbidity worldwide. We used near-infrared erythrocyte-derived transducers (NETs), a contrast agent, in combination with a photoacoustic imaging system to identify the locations of atherosclerotic lesions and occlusion due to myocardial-infarction (MI). NETs (≈90 nm diameter) were fabricated from hemoglobin-depleted mice erythrocyte-ghosts and doped with Indocyanine Green (ICG). Ten weeks old male C57BL/6 mice (n = 9) underwent left anterior descending (LAD) coronary artery ligation to mimic vulnerable atherosclerotic plaques and their rupture leading to MI. 150 µL of NETs (20 µM ICG,) was IV injected via tail vein 1-hour prior to photoacoustic (PA) and fluorescence in vivo imaging by exciting NETs at 800 nm and 650 nm, respectively. These results were verified with histochemical analysis. We observed ≈256-fold higher PA signal from the accumulated NETs in the coronary artery above the ligation. Fluorescence signals were detected in LAD coronary, thymus, and liver. Similar signals were observed when the chest was cut open. Atherosclerotic lesions exhibited inflammatory cells. Liver demonstrated normal portal tract, with no parenchymal necrosis, inflammation, fibrosis, or other pathologic changes, suggesting biocompatibility of NETs. Non-invasively detecting atherosclerotic plaques and stenosis using NETs may lay a groundwork for future clinical detection and improving CAD risk assessment. |
| Databáze: | OpenAIRE |
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