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首页> 外文期刊>Cytokine >Delta chemokine (fractalkine)--a novel mediator of pulmonary arterial hypertension in children undergoing cardiac surgery.
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Delta chemokine (fractalkine)--a novel mediator of pulmonary arterial hypertension in children undergoing cardiac surgery.

机译:Delta趋化因子(fractalkine)-心脏手术儿童肺动脉高压的新型介体。

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BACKGROUND: Fractalkine (FKN), a unique chemokine associated with pulmonary hypertension, may be involved in the acute stress response that regulates inflammation after cardiopulmonary bypass (CPB) surgery. We characterized FKN levels and correlated them with clinical parameters in children undergoing cardiac surgery involving CPB. METHODS: Twenty-seven consecutive patients, aged 30 days to 11.5 years, who underwent surgery for correction of congenital heart defects, were prospectively studied. Serial blood samples were collected preoperatively, upon termination of CPB, and at six points postoperatively. Plasma was recovered immediately, aliquoted, and frozen at -70 degrees C until assayed. Clinical and laboratory data were collected. RESULTS: Baseline FKN levels were skewed between patients. Patients with low FKN levels showed significantly higher levels of oxygen saturation in room air compared to patients with high FKN levels (p<0.05). Moreover, there was a positive correlation between preoperative pulmonary arterial hypertension and FKN levels (p<0.05). Surprisingly, FKN elevation from preoperative to postoperative levels displayed no discernible pattern. CONCLUSIONS: FKN levels significantly correlate with preoperative hypoxemia and PAH, suggesting that FKN may be up-regulated during hypoxemia. CPB is not associated with acute changes in circulating FKN levels. The role of FKN in the postoperative course should be further investigated.
机译:背景:Fractalkine(FKN)是一种与肺动脉高压相关的独特趋化因子,可能参与调节体外循环(CPB)手术后炎症的急性应激反应。我们对接受CPB的心脏手术患儿的FKN水平进行了表征,并将其与临床参数相关联。方法:前瞻性研究了27例年龄在30天至11.5岁的患者,他们接受了手术以纠正先天性心脏缺陷。术前,CPB终止时以及术后6点采集系列血样。立即回收血浆,将其等分,并在-70摄氏度下冷冻直至测定。收集临床和实验室数据。结果:患者之间的基线FKN水平存在偏差。 FKN水平低的患者与FKN水平高的患者相比,室内空气中的氧饱和度水平显着更高(p <0.05)。此外,术前肺动脉高压与FKN水平呈正相关(p <0.05)。令人惊讶的是,从术前到术后水平的FKN升高未显示可辨别的模式。结论:FKN水平与术前低氧血症和PAH显着相关,提示FKN可能在低氧血症期间被上调。 CPB与循环FKN水平的急性变化无关。 FKN在术后病程中的作用应进一步研究。

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