Changjie WU, Yahui WANG, Xing HUA, et al. Dynamic evaluation of inflammation activity in rheumatoid arthritis rabbits using contrast-enhanced ultrasound[J]. Journal of Third Military Medical University, 2018, 40(11): 984-990.
DOI:
Changjie WU, Yahui WANG, Xing HUA, et al. Dynamic evaluation of inflammation activity in rheumatoid arthritis rabbits using contrast-enhanced ultrasound[J]. Journal of Third Military Medical University, 2018, 40(11): 984-990. DOI: 10.16016/j.1000-5404.201801218.
Dynamic evaluation of inflammation activity in rheumatoid arthritis rabbits using contrast-enhanced ultrasound
摘要
Abstract
Objective
2
To evaluate the value of contrast-enhanced ultrasound (CEUS) in the dynamic detection of inflammation activity in rabbit model of rheumatoid arthritis (RA).
Methods
2
A total of 24 rabbits (both sexes
6 months old
weighing 3.0~3.5 kg) were used to establish RA model
via
ovalbumin sensitization in 48 knee joints. The rabbits were divided into 4 groups
that is
control (pre-modeling)
M1 (1 week post induction)
M4 (4 weeks post induction) and M8 (8 weeks post induction) groups
with 12 knees in each group. Ultrasound examination including grey scale ultrasonography and power Doppler imaging (PDI) was performed in both femorotibial joints of each rabbit to measure the synovial thickness and semi-quantitatively score (0~3). CEUS was subsequently performed to evaluate the enhancement of synovium. Time-intensity curve (TIC) was drawn with automatic fitting
and the data including peak intensity (PI)
peak time (PT)
area under curve (AUC) and half time of descending (T1/2) were determined automatically. All the rats were killed
and the synovial tissues were collected for pathological examination. The synovial vascular bed area index was calculated in each group
and the results were compared. The correlations between ultrasonic data and pathologic data were analyzed.
Results
2
Ultrasonographic results showed that the thickness of femorotibial synovium was increased with modeling time
with significant differences among groups (
P
<
0.01). There was a significant difference in PDI score between the M4 and M8 groups (
P
<
0.05). A positive correlation was found between synovial thickness and pathologic score (
r
=0.887
P
<
0.01). Positive rate of CEUS was higher than that of PDI in both the M4 and M8 groups (8/12
vs
3/12
12/12
vs
10/12). Among the TIC data
the values of PI and AUC in the synovial tissues were lower than those of surrounding fat tissues (
P
<
0.01). There were positive correlations of the PI value
AUC value and PDI score of the synovial tissue with synovial vascular bed area index (
r
1
=0.664
P
<
0.01;
r
2
=0.711
P
<
0.01;
r
3
=0.483
P
<
0.05).
Conclusion
2
Grey scale ultrasonography can reflect the pathological changes of synovitis. CEUS is more sensitive than PDI in reflecting the formation of early angiogenesis in the synovium
and is valuable in the early dynamic detection of inflammation activity in RA.
关键词
Keywords
references
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