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Jacobs K, Docter D, de Smit L, Korfage HAM, Visser SC, Lobbezoo F, Hlushchuk R, de Bakker BS. High resolution imaging of human development: shedding light on contrast agents. Neuroradiology 2024:10.1007/s00234-024-03413-z. [PMID: 38995394 DOI: 10.1007/s00234-024-03413-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 06/21/2024] [Indexed: 07/13/2024]
Abstract
BACKGROUND Visualizing (micro)vascular structures remains challenging for researchers and clinicians due to limitations in traditional radiological imaging methods. Exploring the role of vascular development in craniofacial malformations in experimental settings can enhance understanding of these processes, with the effectiveness of high-resolution imaging techniques being crucial for successful research in this field. Micro-CT imaging offers 3D microstructural insights, but requires contrast-enhancing staining agents (CESAs) for visualizing (micro)-vascular tissues, known as contrast-enhanced micro-CT (CECT). As effective contrast agents are crucial for optimal visualization, this review focuses on comparative studies investigating such agents for micro-vascular tissue imaging using micro-CT. Furthermore, we demonstrate the utilization of B-Lugol solution as a promising contrast agent for acquiring high-quality micro-CT images of (micro)vascular structures in human embryonic samples. METHOD This scoping review followed Preferred Reporting Items for Systematic Reviews and Meta-analysis Protocols. PubMed database provided relevant articles, screened initially by title and abstract. Inclusion and exclusion criteria defined outcomes of interest. RESULTS From an initial search, 273 records were identified, narrowed down to 9 articles after applying our criteria. Additionally, two articles were added through citation searching. This, a total of 11 articles were incorporated in this study. CONCLUSION This micro-CT contrast agent review underscores the need for tailored choices based on research goals. Both Barium sulfate and Iodine-based agents showing excellent results, providing high resolution (micro) vascular content, especially in ex-vivo specimens. However, careful consideration of protocols and tissue characteristics remains imperative for optimizing the effectiveness of micro-CT imaging for the study of cranio-facial vascular development.
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Affiliation(s)
- Karl Jacobs
- Department of Orofacial Pain and Disfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands.
- Department of Medical Biology, Section Clinical Anatomy & Embryology, Amsterdam UMC location AMC, University of Amsterdam, Meibergdreef 15, Amsterdam, The Netherlands.
- Amsterdam Reproduction and Development Research Institute, Meibergdreef 9, Amsterdam, The Netherlands.
| | - Daniel Docter
- Department of Medical Biology, Section Clinical Anatomy & Embryology, Amsterdam UMC location AMC, University of Amsterdam, Meibergdreef 15, Amsterdam, The Netherlands
| | - Lotte de Smit
- Department of Orofacial Pain and Disfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Hans A M Korfage
- Department of Orofacial Pain and Disfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Sophie C Visser
- Department of Medical Biology, Section Clinical Anatomy & Embryology, Amsterdam UMC location AMC, University of Amsterdam, Meibergdreef 15, Amsterdam, The Netherlands
| | - Frank Lobbezoo
- Department of Orofacial Pain and Disfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Ruslan Hlushchuk
- Micro-CT Research Group, Institute of Anatomy, University of Bern, Baltzerstrasse 2, CH-3012, Bern, Switzerland
| | - Bernadette S de Bakker
- Amsterdam Reproduction and Development Research Institute, Meibergdreef 9, Amsterdam, The Netherlands
- Department of Obstetrics and Gynecology, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam Reproduction & Development Research Institute, Meibergdreef 9, Amsterdam, The Netherlands
- Erasmus MC - Sophia Children's Hospital, University Medical Center Rotterdam, Department of Pediatric Surgery, Rotterdam, The Netherlands
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Liu Y, Liu Q, Yang Z, Li R, Huang Z, Huang Z, Liu J, Wu X, Lin J, Wu X, Zhu Q. Trihydroxyethyl Rutin Provides Neuroprotection in Rats With Cervical Spinal Cord Hemi-Contusion. Front Neurosci 2021; 15:759325. [PMID: 34867167 PMCID: PMC8637531 DOI: 10.3389/fnins.2021.759325] [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: 08/30/2021] [Accepted: 10/18/2021] [Indexed: 12/03/2022] Open
Abstract
Objective: To investigate the neuroprotective effects of trihydroxyethyl rutin in rats with cervical spinal cord hemi-contusion. Methods: Adult male Sprague–Dawley rats were subjected to hemi-contusion at a stroke depth of 1.2 mm, and then intraperitoneally injected with 50 or 100 mg/kg trihydroxyethyl rutin per day for 12 weeks (T50 and T100 groups, respectively). Changes in somatosensory evoked potentials (SEPs), motor evoked potentials (MEPs), and behavior were continuously monitored. At 12 weeks post-injury, immunohistochemical staining was performed to assess changes in cervical spinal cord microvascular morphology. Magnetic resonance imaging (MRI) scans were performed to examine end-stage injury in the cervical spinal cord, and Eriochrome cyanine-stained slices of spinal cord tissue were evaluated for injury. Results: There were no significant differences in biomechanical parameters among the spinal cord injury, T50 and T100 rat groups. At 3 days-post-injury, there was a significant decrease in grip strength. At 12 weeks post-injury, grip strength recovery was significantly better in the T50 and T100 groups than in the injury group. Compared with the injury group, the total limb placement frequency was significantly higher in the T50 group at 2, 4, 6, 10, and 12 weeks post-injury and in the T100 group at 2, 6, 8, and 10 weeks post-injury. Ipsilateral SEPs and MEPs were dynamic, increasing in latency and decreasing in amplitude in the injury compared with sham group. MRI scanning demonstrated that the coronal, sagittal, and transversal lesion areas were smaller in the T50 and T100 groups than in the injury group. Microvascular density showed a greater reduction in the injury group compared with the T50 and T100 groups. Eriochrome cyanine staining showed that the ipsilateral side, residual parenchyma, and gray matter areas were larger in the T50 and T100 groups than in the injury group. Conclusion: Trihydroxyethyl rutin exhibits robust neuroprotective effects, improving limb motor function and nerve electrophysiological parameters after spinal cord injury, maintaining microvascular density, and reducing the area of injury and degree of demyelination.
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Affiliation(s)
- Yapu Liu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Spinal Surgery, Second Affiliated Hospital of Luohe Medical College, Luohe, China
| | - Qi Liu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhou Yang
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rong Li
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhiping Huang
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zucheng Huang
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Junhao Liu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiuhua Wu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Junyu Lin
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoliang Wu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qingan Zhu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, China
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