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可溶性纖溶酶原激活物受體在社區(qū)獲得性肺炎中的表達及臨床意義

時間:2023-04-30 23:26:55 資料 我要投稿
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可溶性纖溶酶原激活物受體在社區(qū)獲得性肺炎中的表達及臨床意義

【摘要】 目的:探討可溶性尿激酶型纖溶酶原激活物受體(suPAR)在成人社區(qū)獲得性肺炎(CAP)住院患者中的表達及臨床意義。方法:采用用酶聯(lián)免疫吸附試驗(ELISA)法測定61例住院CAP患者治療前后及60例健康對照者的血漿suPAR水平,測定所有研究對象的CRP、WBC及PCT水平,CAP患者入院時進行肺炎CURB-65及APACHEⅡ評分,分析血漿suPAR與PCT、CRP、CURB-65、APACHEⅡ及住院時間的相關(guān)性。結(jié)果:肺炎治療前suPAR、CRP、WBC及PCT水平均顯著高于對照組,肺炎治療后suPAR、CRP、WBC及PCT水平較治療前顯著降低,以上各項比較差異均有統(tǒng)計學(xué)意義(P

可溶性纖溶酶原激活物受體在社區(qū)獲得性肺炎中的表達及臨床意義

【關(guān)鍵詞】 可溶性纖溶酶原激活物受體; 社區(qū)獲得性肺炎; CURB-65評分; APACHEⅡ評分

Expression and Clinical Significance of suPAR in Patients with Community-Acquired Pneumonia/SUN Xun,ZHU Xue-chuang,HAO Yu-gui,et al.//Medical Innovation of China,2015,12(23):039-042

【Abstract】 Objective:To investigate the expression and clinical significance of soluble urokinase-type plasminogen activator receptor (suPAR) in patients with CAP. Method:The plasma suPAR levels of 61 adult patients with CAP and 60 healthy patients were measured by the method of enzyme-linked immunosorbent assay(ELISA).The levels of CRP、WBC and PCT of all research objects were measured.The APACHE Ⅱ and CURB-65 scores were evaluated when the patients were hospitalized.The relationship between plasma suPAR and PCT,CRP,CURB-65 score,APACHEⅡ score,length of stay were analyzed. Result:Before treatment,the suPAR,CRP、WBC and PCT levels in patients with CAP were significantly higher than those in the control group,after treatment,the suPAR,CRP、WBC and PCT levels of CAP patients were lower than before treatment,the differences above were all statistically significant(P  【Key words】 Soluble urokinase-type plasminogen activator receptor; Community-acquired pneumonia; CURB-65 score; APACHE Ⅱ score

First-author’s address:Zaozhuang Municipal Hospital,Zaozhuang 277100,China

社區(qū)獲得性肺炎是最常見的感染性疾病,有很高的發(fā)病率和死亡率。在美國肺炎與流感是第九位的常見死亡原因,2010年約5萬人死于肺炎[1]。及時、有效的抗生素治療能降低發(fā)病率和死亡率,早期的診斷和病情嚴(yán)重程度的評估對CAP患者的治療顯得尤為重要。suPAR是尿激酶型纖溶酶原激活物受體(uPAR)的可溶形式,在某些感染性疾病(如菌血癥、HIV感染)、腫瘤及一些慢性疾病(如腎病、肝。┲校獫{suPAR水平升高。近年研究發(fā)現(xiàn),血漿suPAR水平的升高與疾病預(yù)后不良相關(guān)。本研究通過分析CAP患者血suPAR水平與其他炎癥標(biāo)記物及病情嚴(yán)重程度指標(biāo)的相關(guān)性,評估suPAR對CAP患者危險分層和預(yù)后的價值。   目前關(guān)于suPAR的研究集中于系統(tǒng)性炎癥反應(yīng)綜合征(SIRS)、膿毒血癥等[9-10],且顯示了作為新型炎癥標(biāo)記物的價值,而國內(nèi)外未見在成人CAP中的研究報道。有在兒童CAP的研究顯示,其血漿suPAR濃度明顯高于健康個體,且與C-反應(yīng)蛋白、住院時間呈正相關(guān),重癥患兒血漿suPAR水平明顯高于非重癥患兒[11]。Wrotek等[12]對兒童CAP的研究亦顯示血漿suPAR水平與C-反應(yīng)蛋白、PCT等呈正相關(guān)。這與本研究在成人CAP的研究一致。

本研究顯示肺炎患者血漿suPAR增高,可能由于肺炎患者uPAR在白細(xì)胞中表達增高。而uPAR表達增加,進一步促進炎癥細(xì)胞的趨化及滲出,有利于感染的清除。目前已有一些基礎(chǔ)實驗間接證明了這一點。在銅綠假單胞菌肺炎動物模型中,uPAR基因敲除小鼠與野生小鼠相比,中性粒細(xì)胞的募集能力明顯下降,且uPAR基因敲除的小鼠,肺部中性粒細(xì)胞遷移減少[13-14]。Gyetko等[15]的研究表明細(xì)胞膜表面的uPAR可調(diào)節(jié)抗原致敏引起的淋巴細(xì)胞向肺部的募集。uPAR在白細(xì)胞中表達增高,uPAR從細(xì)胞表面脫落進入血液導(dǎo)致suPAR的增高。

總之,本研究發(fā)現(xiàn)血漿suPAR水平能夠評估成人CAP的病情嚴(yán)重性,指導(dǎo)抗生素治療。盡管本研究存在樣本量小、未進行細(xì)菌學(xué)分析、未進行靈敏度及特異度分析的缺點,但本研究提示了suPAR可以作為CAP的炎性標(biāo)記物,與其他標(biāo)記物一起評估病情,指導(dǎo)診療。在成人CAP中,suPAR的價值今后尚需大規(guī)模前瞻性研究。

參考文獻

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[2] Mandell L A,Wunderink R G,Anzueto A,et al.Infectious Diseases Society of America/American Thoracic Society consensus guidelines on the management of community-acquired pneumonia in adults[J].Clin Infect Dis,2007,44(Suppl 2):S27-S72.

[3] Eugen-Olsen J.suPAR-a future risk marker in bacteremia[J].J Inter Med,2011,270(1):29-31.

[4] Arnold F W,Brock G N,Peyrani P,et al.Predictive accuracy of the pneumonia severity index vs. CURB-65 for time to clinical stability:results from the Community Acquired Pneumonia Organization(CAPO) International Cohort Study[J].Respir Med,2010,104(11):1736-1743.

[5]劉旭,沈湘波,李小玲.PSI評分與CURB評分在社區(qū)獲得性肺炎嚴(yán)重程度中的比較[J].中國醫(yī)學(xué)創(chuàng)新,2011,8(18):181-182.

[6] Jeong K Y,Kim K,Kim T Y,et al.Prognostic value of n-terminal pro-brain natriuretic peptide in hospitalized patients with community-acquired pneumonia[J].Emerg Med J,2011,28(2):122-127.

[7]王日興,王茹春,李詩陽,等.社區(qū)獲得性肺炎CURB-65與APACHEⅡ評分對比研究[J].中華醫(yī)院感染學(xué)雜志,2011,21(18):3781-3783.

[8] Koch A,Voigt S,Kruschinski C,et al.Circulating soluble urokinase plasminogen activator receptor is stably elevated during the first week of treatment in the intensive care unit and predicts mortality in critically ill patients[J].Crit Care,2011,15(1):R63.

[9] Raggam R B,Wagner J,Prüller F.Soluble urokinase plasminogen activator receptor predicts mortality in patients with systemic inflammatory response syndrome[J].J Intern Med,2014,276(6):651-658.

[10] Siahanidou T,Margeli A,Tsirogianni C,et al.Clinical value of plasma soluble urokinase-type plasminogen activator receptor levels in term neonates with infection or sepsis:a prospective study[J].Mediators Inflamm,2014,2014(1):375 702.   [11] Wrotek A, Jackowska T,Pawlik K.Soluble urokinase plasminogen activator receptor:an indicator of pneumonia severity in children[J].Adv Exp Med Biol,2015,1(835):1-7.

[12] Wrotek A,Pawlik K,Jackowska T,et al.Soluble receptor for urokinase plasminogen activator in 可溶性纖溶酶原激活物受體在社區(qū)獲得性肺炎中的表達及臨床意義community-acquired pneumonia in children[J].Adv Exp Med Biol,2013,1(788):329-334.

[13] Gyetkoo M R,Sud S,Kendall T,et al.Urokinase receptor-deficient mice have impaired neutrophil recruitment in response to pulmonary pseudomonas aeruginosa infection[J].J Immunol,2000,165(3):1513-1519.

[14] Wiersinga W J,Kager L J.Urokinase receptor is necessary for bacterial defense against pneumonia-derived septic melioidosis by facilitating phagocytosis[J].J Immunol,2010,184(6):3079-3086.

[15] Gyetko M R,Sud S J,Sonstein J,et al.Antigen-driven lymphocyte recruitment to the lung is diminished in the absence of urokinase-type plasminogen activator(uPA) receptor,but is independent of uPA[J].J Immunol,2001,167(10):5539-5542.

(收稿日期:2015-01-22) (本文編輯:王利)

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