MRI of magnetically labeled mesenchymal stem cells in hepatic failure model
- Authors
- Son, Kyu Ri; Chung, Se Young; Kim, Hyo-Cheol; Kim, Hoe Suk; Choi, Seung Hong; Lee, Jeong Min; Moon, Woo Kyung
- Issue Date
- 28-11월-2010
- Publisher
- BAISHIDENG PUBLISHING GROUP INC
- Keywords
- Stem cell; Liver failure; Magnetic resonance; Nanoparticle; Transplantation
- Citation
- WORLD JOURNAL OF GASTROENTEROLOGY, v.16, no.44, pp.5611 - 5615
- Indexed
- SCIE
SCOPUS
- Journal Title
- WORLD JOURNAL OF GASTROENTEROLOGY
- Volume
- 16
- Number
- 44
- Start Page
- 5611
- End Page
- 5615
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/115307
- DOI
- 10.3748/wjg.v16.i44.5611
- ISSN
- 1007-9327
- Abstract
- AIM: To track intravascularly transplanted mesenchymal stem cells (MSCs) labeled with superparamagnetic iron oxide (SPIO) by using magnetic resonance imaging (MRI) in an experimental rabbit model of hepatic failure. METHODS: Human MSCs labeled with FDA-approved SPIO particles (Feridex) were transplanted via the mes enteric vein into rabbits (n = 16) with carbon tetrachloride-induced hepatic failure. Magnetic resonance (MR) examinations were performed with a 3.0 T clinical scanner immediately before and 2 h and 1, 3, and 7 d after transplantation. Signal intensity (SI) changes on T2*-weighted MRI were measured, and correlation between MR findings and histomorphologic findings was also investigated. RESULTS: SI on T2*-weighted MRI decreased significantly in the liver 2 h after injection of human MSCs and returned gradually to the levels found before injection in 7 d. Changes in SI in the liver at 2 h, 1, 3, and 7 d were 41.87% +/- 9.63%, 10.42% +/- 4.3%, 5.12% +/- 1.9%, 3.75% +/- 1.2%, respectively (P < 0.001). Histologic analyses confirmed the presence of MSCs in the liver, localized mainly in the sinusoids in early period (2 h and 1 d) and concentrated to the border zone in late period (3 and 7 d). The number of iron-positive cells in the liver at 2 h and on 1, 3 and 7 d after transplantation was 29.2 +/- 4.8, 10.1 +/- 3.7, 6.7 +/- 2.2, and 5.8 +/- 2.1, respectively (P = 0.013). CONCLUSION: Intravascularly injected SPIO-labeled MSCs in an experimental rabbit model of hepatic failure can be detected and followed with MRI. (C) 2010 Baishideng. All rights reserved.
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