Goetz M, Fottner C, Schirrmacher E, Delaney P, Gregor S, Schneider C, Strand D, Kanzler S, Memadathil B, Weyand E, Holtmann M, Schirrmacher R, Weber MM, Anlauf M, Klöppel G, Vieth M, Galle PR, Bartenstein P, Neurath MF, Kiesslich R. In-vivo confocal real-time mini-microscopy in animal models of human inflammatory and neoplastic diseases.
Endoscopy 2007;
39:350-6. [PMID:
17427071 DOI:
10.1055/s-2007-966262]
[Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS
Although various improvements in tissue imaging modalities have recently been achieved, in-vivo molecular and subsurface imaging in the field of gastroenterology remains a technical challenge. In this study we evaluated a newly developed, handheld, miniaturized confocal laser microscopy probe for real-time in-vivo molecular and subsurface imaging in rodent models of human disease.
MATERIALS AND METHODS
The minimicroscope uses a 488-nm, single line laser for fluorophore excitation. The optical slice thickness is 7 microm, the lateral resolution 0.7 microm. The range of the z-axis is 0-250 microm below the tissue surface. Imaging was performed using different fluorescent staining protocols; 5-carboxyfluorescein-labeled octreotate was synthesized for targeted molecular imaging.
RESULTS
Cellular and subcellular details of the gastrointestinal tract could be visualized in vivo at high resolution. Confocal real-time microscopy allowed in-vivo identification of tumor vessels and liver metastases, as well as diagnosis of focal hepatic inflammation, necrosis, and associated perfusion anomalies. Somatostatin-receptor targeting permitted in-vivo molecular staining of AR42-J-induced carcinoma and pancreatic islet cells.
CONCLUSIONS
Confocal mini-microscopy allows rapid in-vivo molecular and subsurface imaging of normal and pathological tissue in the gastrointestinal tract at high resolution. Because this technology is applicable to humans, it might impact on future in-vivo microsocpic and molecular diagnosis of diseases such as cancer and inflammation.
Collapse