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胰腺癌调强放疗对Cystatin C分泌的影响

Zhejiang Clinical Medical Journal(2014)

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Abstract
目的:评价胰腺癌调强放疗前后胰腺癌患者血清半胱氨酸蛋白酶抑制剂C(Cystatin C)的变化,并对血清中Cystatin C浓度的改变与双侧肾脏的受照射剂量之间的关系进行研究。方法共纳入21例胰腺癌患者,每位患者给予包括吉西他滨的同步放化疗治疗,放疗前和放疗后测定血清Cystatin C变化。对于Cystatin C升高患者的Cystatin C浓度和肾脏照射剂量的DVH参数进行回归分析。结果21例行放疗的胰腺癌患者中,有8例Cystatin C升高;整组患者与照射前比较,放疗后患者血清中的Cystatin C[中位0.74mg/L;范围(0.22-3.12)mg/L]明显高于放疗前[中位0.52mg/L;范围(0.17~1.00)mg/L](P<0.05)。在8例血清Cystatin C升高超过正常上线1.03mg/L患者的肾脏的剂量参数均与Cystatin C未升高13例患者组的无明显差异(P>0.05);相关性分析表明:其血清中的Cystatin C浓度与仅与Dmax(Gy)(P=0.032)有相关性。结论胰腺癌放疗的Cystatin C浓度明显高于未受照射者,仅与肾脏受照射剂量的Dmax相关,而与其他肾脏剂量参数指标无相关关系。
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Key words
Cystatin C,Pancreatic cancer,Intensity-modulated radiotherapy
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