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Rosario-Berríos DN, Pang A, Liu LP, Maidment PSN, Kim J, Yoon S, Nieves LM, Mossburg KJ, Adezio A, Noël PB, Lennon EM, Cormode DP. The Effect of the Size of Gold Nanoparticle Contrast Agents on CT Imaging of the Gastrointestinal Tract and Inflammatory Bowel Disease. Bioconjug Chem 2025; 36:233-244. [PMID: 39786354 PMCID: PMC11839313 DOI: 10.1021/acs.bioconjchem.4c00507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2025]
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD). CT imaging with contrast agents is commonly used for visualizing the gastrointestinal (GI) tract in UC patients. Contrast agents that provide enhanced imaging performance are highly valuable in this field. Recent studies have made significant progress in developing better contrast agents for imaging the gastrointestinal tract using nanoparticles. However, the impact of nanoparticle size on this application remains unexplored. Gold nanoparticles (AuNPs) serve as an ideal model to investigate the effect of nanoparticle size on imaging of the gastrointestinal tract due to their controllable synthesis across a broad size range. In this study, we synthesized AuNPs with core sizes ranging from 5 to 75 nm to examine the effect of the size in this setting. AuNPs were coated with poly(ethylene glycol) (PEG) to enhance stability and biocompatibility. In vitro tests show that gold nanoparticles are cytocompatible with macrophage cells (∼100% cell viability) and remain stable under acidic conditions, with no significant size changes over time. Phantom imaging studies using a clinical CT scanner indicated that there was no effect of nanoparticle size on CT contrast production, as previously demonstrated. In vivo imaging using a mouse model of acute colitis revealed a strong contrast generation throughout the GI tract for all agents tested. For the most part, in vivo contrast was independent of AuNP size, although AuNP outperformed iopamidol (a clinically approved control agent). In addition, differences in attenuation trends were observed between healthy and colitis mice. We also observed almost complete clearance at 24 h of all formulations tested (less than 0.7% ID/g was retained), supporting their value as a model platform for studying nanoparticle behavior in imaging. In conclusion, this study highlights the potential of nanoparticles as effective contrast agents for CT imaging of the gastrointestinal tract (GIT) in the UC. Further systemic research is needed to explore contrast agents that can specifically image disease processes in this disease setting.
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Affiliation(s)
- Derick N Rosario-Berríos
- Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Amanda Pang
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
| | - Leening P Liu
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Portia S N Maidment
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
| | - Johoon Kim
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Seokyoung Yoon
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
| | - Lenitza M Nieves
- Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Katherine J Mossburg
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Andrew Adezio
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania, School of Veterinary Medicine, Philadelphia 19104, United States
| | - Peter B Noël
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Elizabeth M Lennon
- Department of Clinical Sciences and Advanced Medicine, University of Pennsylvania, School of Veterinary Medicine, Philadelphia 19104, United States
| | - David P Cormode
- Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 SilversteinPhiladelphia, Pennsylvania 19104, United States
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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Haghighi RR, Zarei F, Moshiri S, Jafari A, Chatterjee S, Akondi V, Chatterjee VV. Composite Iodine-gold Nanoparticles as a Contrast Agent in Computed Tomography. J Med Phys 2024; 49:448-455. [PMID: 39526145 PMCID: PMC11548064 DOI: 10.4103/jmp.jmp_126_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 04/02/2024] [Accepted: 05/16/2024] [Indexed: 11/16/2024] Open
Abstract
Purpose Solutions of iodine-based compounds, due to their high X-ray attenuation coefficient, are widely used as contrast agents in computed tomography (CT) imaging. This paper investigates the attenuation properties of iodine and gold to develop nanoparticle-based contrast agents, for example, composite nanoparticles (NPs) with layers of iodine and gold or a mixture of NPs of gold and iodine. Materials and Methods A theoretical formula is derived that gives the Hounsfield Unit (HU) for different weight-by-weight (w/w) concentrations of a mixture of blood + iodine + gold. The range of compositions for which iodine + gold mixture can give a suitable HU ≥250 upon being mixed with blood, is formulated. These estimates are derived from experiments on the variation of HU values in different compositions of aqueous solutions of iodine and available data for gold. Results It is seen that for an aqueous solution of iodine, the suitable HU of 250 (hence giving sufficient gray level to the CT image) can be obtained with w/w concentrations of iodine being 0.0044, 0.008, and 0.0097 for observations at 80, 100, and 120 kVp, respectively. The corresponding w/w concentrations of gold NPs would be 0.0103, 0.0131, and 0.0158. With these basic results, compositions of suitable mixtures of iodine and gold are also specified. Conclusion Aqueous suspensions of gold NPs are suitable as contrast materials for CT imaging and can also be used as a component of a composite contrast material consisting of an iodine and gold mixture.
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Affiliation(s)
| | - Fariba Zarei
- Medical Imaging Research Center, Shiraz, Iran
- Department of Radiology, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | | | - Sabyasachi Chatterjee
- Retired Scientist from Indian Institute of Astrophysics; Ongil, 79 D3, Sivaya Nagar Reddiyur, Alagapuram, Tamil Nadu, India
| | - Vyas Akondi
- Department of Physical Sciences, Indian Institute of Science Education and Research, Government ITI Building, Berhampur, Odisha, India
| | - Vani Vardhan Chatterjee
- Department of Applied Physics and Instrumentation, Indian Institute of Science, Bengaluru, Karnataka, India
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Rosario-Berríos DN, Pang A, Liu LP, Maidment PSN, Kim J, Yoon S, Nieves LM, Mossburg K, Adezio A, Noel P, Lennon EM, Cormode DP. The effect of the size of gold nanoparticle contrast agents on CT imaging of the gastrointestinal tract and inflammatory bowel disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.20.576354. [PMID: 38328034 PMCID: PMC10849472 DOI: 10.1101/2024.01.20.576354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Ulcerative colitis (UC) is a chronic inflammatory bowel disease (IBD). CT imaging with contrast agents is commonly used for visualizing the gastrointestinal (GI) tract in UC patients. CT is a common imaging modality for evaluating IBD, especially in patients with acute abdominal pain presenting to emergency departments. CT's major limitation lies in its lack of specificity for imaging UC, as the commonly used agents are not well-suited for inflamed areas. Recent studies gastrointestinal tract (GIT) in UC. Further systemic research is needed to explore novel contrast agents that can specifically image disease processes in this disease setting.
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Khorasani A, Shahbazi-Gahrouei D, Safari A. Recent Metal Nanotheranostics for Cancer Diagnosis and Therapy: A Review. Diagnostics (Basel) 2023; 13:diagnostics13050833. [PMID: 36899980 PMCID: PMC10000685 DOI: 10.3390/diagnostics13050833] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 02/24/2023] Open
Abstract
In recent years, there has been an increasing interest in using nanoparticles in the medical sciences. Today, metal nanoparticles have many applications in medicine for tumor visualization, drug delivery, and early diagnosis, with different modalities such as X-ray imaging, computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), etc., and treatment with radiation. This paper reviews recent findings of recent metal nanotheranostics in medical imaging and therapy. The study offers some critical insights into using different types of metal nanoparticles in medicine for cancer detection and treatment purposes. The data of this review study were gathered from multiple scientific citation websites such as Google Scholar, PubMed, Scopus, and Web of Science up through the end of January 2023. In the literature, many metal nanoparticles are used for medical applications. However, due to their high abundance, low price, and high performance for visualization and treatment, nanoparticles such as gold, bismuth, tungsten, tantalum, ytterbium, gadolinium, silver, iron, platinum, and lead have been investigated in this review study. This paper has highlighted the importance of gold, gadolinium, and iron-based metal nanoparticles in different forms for tumor visualization and treatment in medical applications due to their ease of functionalization, low toxicity, and superior biocompatibility.
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Affiliation(s)
- Amir Khorasani
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
| | - Daryoush Shahbazi-Gahrouei
- Department of Medical Physics, School of Medicine, Isfahan University of Medical Sciences, Isfahan 81746-73461, Iran
- Correspondence: ; Tel.: +98-31-37929095
| | - Arash Safari
- Department of Radiology, Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz 71439-14693, Iran
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Sebti Y, Chauveau T, Chalal M, Lalatonne Y, Lefebvre C, Motte L. Assessment of the Morphological, Optical, and Photoluminescence Properties of HfO 2 Nanoparticles Synthesized by a Sol-Gel Method Assisted by Microwave Irradiation. Inorg Chem 2022; 61:6508-6518. [PMID: 35438982 DOI: 10.1021/acs.inorgchem.2c00277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this work, we optimized the synthesis of HfO2 nanoparticles (NPs) with a nonaqueous sol-gel method assisted by microwave heating, with a direct surfactant-free extraction and stabilization in water. To tune the structural, morphological, and photophysical properties, we explored the influence of reaction time, heating temperature, and type and concentration of a salt precursor. The controlled size, shape, crystallinity associated with high stability, a good yield of production, and stabilization in water without any surfactant modification of these HfO2 NPs open possibilities for future optoelectronic and biomedical applications. The investigation of their optical properties, revealed a high absorption in the UV range and the presence of a large band gap, originating in transparency at visible wavelengths. Under UV excitation, photoluminescence (PL) shows three emission bands centered at 305, 381, and 522 nm and are assigned to the vibronic transition of an excited OH•* radical or to a self-trapped exciton, to threefold oxygen vacancies VO3 with recombination to the valence band, and to defect level, respectively. The presence of oxygen vacancies associated with PL properties is particularly attractive for optoelectronic, photocatalysis, scintillator, and UV photosensor applications. Finally, by changing the nature of the hafnium precursor salt, using hafnium ethoxide or hafnium acetylacetonate, low-crystallized and aggregated NPs were obtained, which requires further investigation.
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Affiliation(s)
- Yasmine Sebti
- Université Sorbonne Paris Nord and Université Paris Cité, INSERM, LVTS, F-75018 Paris, France
| | - Thierry Chauveau
- Université Sorbonne Paris Nord, CNRS, LSPM, F-93430 Villetaneuse, France
| | - Mohand Chalal
- Université Sorbonne Paris Nord, CNRS, CSPBAT, F-93017 Bobigny, France
| | - Yoann Lalatonne
- Université Sorbonne Paris Nord and Université Paris Cité, INSERM, LVTS, F-75018 Paris, France.,Service de Biophysique et Médecine Nucléaire, AP-HP, Hôpital Avicenne, F-93009 Bobigny, France
| | | | - Laurence Motte
- Université Sorbonne Paris Nord and Université Paris Cité, INSERM, LVTS, F-75018 Paris, France
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