| Title |
Molecular magnetic resonance imaging of activated hepatic stellate cells with ultrasmall superparamagnetic iron oxide targeting integrin αvβ3 for staging liver fibrosis in rat model
|
|---|---|
| Published in |
International Journal of Nanomedicine, March 2016
|
| DOI | 10.2147/ijn.s101366 |
| Pubmed ID | |
| Authors |
Caiyuan Zhang, Huanhuan Liu, Yanfen Cui, Xiaoming Li, Zhongyang Zhang, Yong Zhang, Dengbin Wang |
| Abstract |
To evaluate the expression level of integrin αvβ3 on activated hepatic stellate cells (HSCs) at different stages of liver fibrosis induced by carbon tetrachloride (CCl4) in rat model and the feasibility to stage liver fibrosis by using molecular magnetic resonance imaging (MRI) with arginine-glycine-aspartic acid (RGD) peptide modified ultrasmall superparamagnetic iron oxide nanoparticle (USPIO) specifically targeting integrin αvβ3. All experiments received approval from our Institutional Animal Care and Use Committee. Thirty-six rats were randomly divided into three groups of 12 subjects each, and intraperitoneally injected with CCl4 for either 3, 6, or 9 weeks. Controls (n=10) received pure olive oil. The change in T2* relaxation rate (ΔR2*) pre- and postintravenous administration of RGD-USPIO or naked USPIO was measured by 3.0T clinical MRI and compared by one-way analysis of variance or the Student's t-test. The relationship between expression level of integrin αvβ3 and liver fibrotic degree was evaluated by Spearman's ranked correlation. Activated HSCs were confirmed to be the main cell types expressing integrin αvβ3 during liver fibrogenesis. The protein level of integrin αv and β3 subunit expressed on activated HSCs was upregulated and correlated well with the progression of liver fibrosis (r=0.954, P<0.001; r=0.931, P<0.001, respectively). After injection of RGD-USPIO, there is significant difference in ΔR2* among rats treated with 0, 3, 6, and 9 weeks of CCl4 (P<0.001). The accumulation of iron particles in fibrotic liver specimen is significantly greater for RGD-USPIO than naked USPIO after being injected with equal dose of iron. Molecular MRI of integrin αvβ3 expressed on activated HSCs by using RGD-USPIO may distinguish different liver fibrotic stages in CCl4 rat model and shows promising to noninvasively monitor the progression of the liver fibrosis and therapeutic response to antifibrotic treatment. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 3 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Practitioners (doctors, other healthcare professionals) | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 25 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 25 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 6 | 24% |
| Researcher | 5 | 20% |
| Student > Bachelor | 2 | 8% |
| Student > Master | 2 | 8% |
| Professor | 1 | 4% |
| Other | 2 | 8% |
| Unknown | 7 | 28% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 5 | 20% |
| Agricultural and Biological Sciences | 4 | 16% |
| Pharmacology, Toxicology and Pharmaceutical Science | 3 | 12% |
| Biochemistry, Genetics and Molecular Biology | 2 | 8% |
| Physics and Astronomy | 1 | 4% |
| Other | 3 | 12% |
| Unknown | 7 | 28% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 March 2016.
All research outputs
#16,721,208
of 25,373,627 outputs
Outputs from International Journal of Nanomedicine
#2,088
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Outputs of similar age
#179,681
of 312,604 outputs
Outputs of similar age from International Journal of Nanomedicine
#55
of 98 outputs
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