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- W3030125487 abstract "Objective To study the correlation between high resolution computed tomography manifestations and expression of transforming growth factor beta,tumor necrosis factor alpha in radiationinduced lung injury of rats,and to investigate the vslues of cytokine detection and HRCT scanning for the prediction and early diagnosis of radiation-induced lung injury.Methods Forty-eight Sprague-Dawley (SD)rats were randomly divided into eight groups,group A was normal control group.and group BH were irradiated with a single dose of 15 Gy to the lungs.HRCT scanning Wag performed before and 1 week,2,4,8,12,16,24 weeks after radiation in group A-H respectively.The expression of TGF-beta and TNF-alpha were detected with ELISA. All the rats were killed to observe pathological changes of their lungs.HRCT signs,levels of cytokine were simultaneously compared and analyzed.The t-test and Spenrman rank correlation were used for the statistics.Results Four HRCT signs were observed during the 24 weeks after radiation,including ground-glass opacity(1 case),patchy consolidation(8 cases),massive consolidation(7 cases)and fibrosis(3 cases).The average levels of TGF-beta in group B-H[(3.33±0.47),(3.20±0.65),(3.12±0.45),(3.54±0.80),(3.30±1.13),(2.49±0.67),(4.19±0.22)μg/L,respectively]were hisher than the control group[(0.45±0.14)μg/L.P＜0.05].At 24 weeks the average level increased to the highest peak[(4.19 4-0.22)μg/L,P＜0.05].At 1 week and 2,4,8,12 weeks after radiation,the average level of TNF-alpha in radiation group[(236.52±29.01),(214.91±34.53),(270.97±42.12),(208.83±86.51),(208.83±82.23)ng/L]was hisher than the control group[(31.78±0.92)ng/L,P＜0.05].The average level increased to the highest peak [(270.97±42.12)ng/L,P＜0.05]at 4 weeks.The average level at 16 and 24 weeks[(60.63±38.49),(32.07±1.05)ng/L]dropped to the level similar to the control group(P＞0.05).There were no rank correlations between HRCT manifestations and expression of TGF-beta and TNF-alpha(rs=0.5570 and 0.1013.P＞0.05).HRCT signs were correlated with pathological changes.Conciusions The monitoring of TGF-beta and TNF.alpha in the serum after irradiation can predict the development of radiation-induced lung injury.There are no rank correlations between HRCT manifestations and expression of TGF-beta and TNF-alpha.Key words: Transforming growth factor beta; Tumor necrosis factor; Radiation injuries,experimental; Tomography,X-ray computed" @default.
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- W3030125487 date "2008-09-10" @default.
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- W3030125487 title "A correlation study between high resolution CT appearances and expression of transforming growth factor-β,tumor necrosis factor-α in radiation-induced lung injury of rats" @default.
- W3030125487 doi "https://doi.org/10.3321/j.issn:1005-1201.2008.09.021" @default.
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