[摘 要]目的 探究血清中可溶性血紅蛋白清道夫受體163(sCD163)、CC趨化因子配體18(CCL18)表達(dá)水平對(duì)支氣管哮喘(BA)患兒病情嚴(yán)重程度的影響及預(yù)測(cè)預(yù)后的臨床作用。方法 選取2021年1月至2022年1月期間在衡水市人民醫(yī)院收治的120例BA患兒記為BA組,根據(jù)病情嚴(yán)重程度分為輕度組(34例)、中度組(62例)、重度組(24例),根據(jù)預(yù)后情況將BA組患兒分為預(yù)后良好組(52例)、預(yù)后不良組(68例);同時(shí)隨機(jī)選取120例本院體檢健康兒童為對(duì)照組。酶聯(lián)免疫吸附實(shí)驗(yàn)(ELISA)檢測(cè)sCD163、CCL18水平;肺功能儀檢測(cè)受試者呼吸峰流量(PEF)百分比和第一秒用力呼氣量容積(FEV1);Pearson相關(guān)性分析sCD163、CCL18相關(guān)性;多因素Logistic回歸分析BA患兒預(yù)后不良的影響因素;受試者工作特征(ROC)曲線評(píng)估CD163、CCL18對(duì)BA患兒預(yù)后不良的預(yù)測(cè)價(jià)值。結(jié)果 BA組患兒血清中sCD163、CCL18表達(dá)水平高于對(duì)照組,PEF、FEV1低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(t值介于8.082~10.896之間,Plt;0.05);輕度組、中度組和重度組患兒血清中sCD163、CCL18表達(dá)水平依次升高,差異有統(tǒng)計(jì)學(xué)意義(F值分別為14.378、38.191,Plt;0.05);預(yù)后良好組患兒血清中sCD163、CCL18表達(dá)水平低于預(yù)后不良組,PEF、FEV1高于預(yù)后不良組,差異有統(tǒng)計(jì)學(xué)意義(t值介于5.576~8.295之間,Plt;0.05);Logistic回歸分析結(jié)果顯示,血清中sCD163、CCL18表達(dá)水平是BA患兒預(yù)后不良的獨(dú)立危險(xiǎn)因素(OR值分別1.587、1.826,Plt;0.05),PEF、FEV1是BA患兒預(yù)后不良的獨(dú)立保護(hù)因素(OR值分別0.527、0.425,Plt;0.05);Pearson相關(guān)性分析顯示預(yù)后不良組患兒血清中sCD163、CCL18表達(dá)水平呈正相關(guān)性(r=0.485,Plt;0.001);sCD163、CCL18及二者聯(lián)合預(yù)測(cè)BA患兒預(yù)后不良的曲線下面積(AUC)分別為0.825(95%CI:0.752~0.897)、0.841(95%CI:0.774~0.909)、0.906(95%CI:0.856~0.955),二者聯(lián)合預(yù)測(cè)優(yōu)于單獨(dú)預(yù)測(cè)(Z值分別為2.454、2.779,Plt;0.05)。結(jié)論 隨著BA患兒病情嚴(yán)重程度的增加,血清中sCD163、CCL18表達(dá)水平逐漸升高,sCD163、CCL18聯(lián)合預(yù)測(cè)BA患兒預(yù)后不良具有較高價(jià)值,可作為早期預(yù)測(cè)指標(biāo)。
[關(guān)鍵詞]支氣管哮喘;患兒;可溶性血紅蛋白清道夫受體163;CC趨化因子配體18;預(yù)后
Doi:10.3969/j.issn.1673-5293.2025.03.012
[中圖分類號(hào)]R179""" [文獻(xiàn)標(biāo)識(shí)碼]A
[文章編號(hào)]1673-5293(2025)03-0079-06
Clinical values of serum sCD163 and CCL18 expressions for evaluating disease severity
and predicting prognosis of children with bronchial asthma
WANG Yanru1,WANG Qiang2,F(xiàn)ENG Tao3,DU Guimei1
(1.Department of Neonatology,Hengshui Municipal People’s Hospital,Hebei Hengshui 053000,China;
2.Department of Nuclear Medicine,Hengshui Municipal People’s Hospital,Hebei Hengshui 053000,China;
3.Department of Pediatrics,Zhangjiakou Municipal Maternal and Child Health Hospital,Hebei Zhangjiakou 075000,China)
[Abstract] Objective To investigate clinical values of expression levels of soluble cluster differentiation 163 (sCD163) and CC chemokine ligand 18 (CCL18) in serum for evaluating severity of bronchial asthma (BA) and predicting prognosis of the children with BA. Methods 120 children with BA who admitted to our hospital from January 2021 to January 2022 were selected as BA group.According to severity of the disease,they were divided into mild BA group (34 cases),moderate BA group (62 cases),and severe BA group (24 cases).Again,according to prognosis,the children in the BA group were divided into good prognosis group (52 cases) and poor prognosis group (68 case).A total of 120 healthy children who underwent physical examination in the same period were randomly selected as the control group.ELISA was applied to detect serum levels of sCD163 and CCL18,and pulmonary function test apparatus was applied to test percentage of peak expiratory flow (PEF) and forced expiratory volume in one second (FEV1) of the children.Pearson correlation analysis was used to analyze correlation between sCD163 and CCL18.Multivariate Logistic regression was applied to analyze influencing factors of poor prognosis of the children with BA.ROC curve was applied to evaluate predictive values of CD163 and CCL18 for poor prognosis of the children with BA. Results The serum levels of sCD163 and CCL18 of BA children were higher than those in the control group,while their PEF and FEV1 were lower than those in the control group,and the differences were significant (t values were between 8.082 and 10.896,all Plt;0.05).And the serum levels of sCD163 and CCL18 of BA children in the mild BA group,the moderate BA group and the severe BA group increased successively along with increase in severity of the disease,and the differences were significant (F=14.378 and 38.191 respectively,both Plt;0.05).The serum levels of sCD163 and CCL18 of the children with BA in the good prognosis group were significantly lower than those in the poor prognosis group,while their PEF and FEV1 were significantly higher than those in the poor prognosis group (T values were between 5.576 and 8.295,all Plt;0.05).Logistic regression analysis showed that the expression levels of sCD163 and CCL18 in serum were independent risk factors for poor prognosis of these children with BA (OR=1.587 and 1.826 respectively,both Plt;0.05),while PEF and FEV1 were independent protective factors for poor prognosis of these children with BA (OR=0.527 and 0.425 respectively,both Plt;0.05).Pearson correlation analysis showed that in the poor prognosis group the serum expression level of sCD163 was positively correlated with the serum expression level of CCL18 (r=0.485,Plt;0.001).The AUCs of sCD163,CCL18 and their combination for predicting poor prognosis of these children with BA were 0.825 (95%CI:0.752-0.897),0.841 (95%CI:0.774-0.909) and 0.906 (95%CI:0.856-0.955) respectively,
indicating that the combied prediction of the two indexes was superior to those of their single prediction
(Z=2.454 and 2.779 respectively,both Plt;0.05). Conclusion In these children with BA,as severity of BA increases,the expression levels of sCD163 and CCL18 in serum gradually increase.The combination of sCD163 and CCL18 has high value for predicting poor prognosis of BA children,so they can be used as early diagnostic indicators of the disease.
[Key words] "bronchial asthma;children;soluble cluster differentiation 163;CC chemokine ligand 18;prognosis
支氣管哮喘(bronchial asthma,BA)是一種常見的慢性呼吸道疾病,反復(fù)發(fā)作,對(duì)肺功能造成損傷。BA臨床表現(xiàn)為氣急、咳嗽胸悶,呼吸困難等,對(duì)患兒日常生活、學(xué)習(xí)等造成嚴(yán)重影響[1]??扇苄匝t蛋白清道夫受體163(soluble hemoglobin scavenger receptor,sCD163)是一種血紅蛋白清除劑,存在于組織液或者血清中,通過(guò)清除血紅蛋白-成紅蛋白復(fù)合物來(lái)促進(jìn)炎性作用[2]。有研究表明,sCD163對(duì)慢性阻塞性肺?。╟hronic obstructive pulmonary disease,COPD)等炎性疾病具有較高的預(yù)測(cè)價(jià)值,可作為預(yù)測(cè)標(biāo)記物[3]。CC趨化因子配體18(CC chemokine ligand 18,CCL18)是趨化因子家族中的小分量細(xì)胞因子,參與先天免疫反應(yīng),可選擇性導(dǎo)致嗜酸性粒細(xì)胞在炎癥部位大量存在,在炎癥相關(guān)疾病中表達(dá)上調(diào)[4]。在肺部組織出現(xiàn)炎癥時(shí),CCL18表達(dá)上調(diào),影響肺功能[5]。因此,本研究選擇sCD163與CCL18為研究指標(biāo),探討其與BA的相關(guān)性,以期為預(yù)測(cè)BA患兒預(yù)后提供新的生物標(biāo)記物。
1資料與方法
1.1一般資料
選取2021年1月至2022年1月期間在衡水市人民醫(yī)院收治的120例BA患兒記為BA組,其中男56例,女64例,平均(9.34±2.56)歲。納入標(biāo)準(zhǔn):①所有患兒均符合“支氣管哮喘治療標(biāo)準(zhǔn)”[6];②入院前未接受相關(guān)治療干預(yù);③研究對(duì)象家屬詳知此項(xiàng)研究?jī)?nèi)容,并自愿簽署同意書。排除標(biāo)準(zhǔn):①臨床資料不完整;②合并肺結(jié)核、支氣管異物等呼吸道疾?。虎壅J(rèn)知功能障礙,不能配合相關(guān)研究。同時(shí)隨機(jī)選取120例本院體檢健康兒童記為對(duì)照組,其中男67例,女53例,平均(9.25±2.67)歲。記錄并分析所有受試者性別、年齡等臨床資料。本研究經(jīng)醫(yī)院倫理委員會(huì)批準(zhǔn)(審批號(hào):202011-20)。
1.2研究方法
抽取受試者空腹?fàn)顟B(tài)下外周肘靜脈血3mL,置于干燥的離心管中,4℃離心機(jī)(美國(guó)賽默飛,Sorvall ST8)中1007×g,離心10min,取上層血清。酶聯(lián)免疫吸附實(shí)驗(yàn)(Enzyme linked immunosorbent assay,ELISA)檢測(cè)所有受試者血清中的sCD163(上海酶聯(lián)生物,ml060105)、CCL18(武漢菲恩生物,EH0061)表達(dá)水平。采用肺功能儀(德國(guó)格萊特,YM0070814)對(duì)患兒呼吸峰流量(peak expiratory flow,PEF)百分比和第一秒用力呼氣量容積(forced expiratory volume in one second,F(xiàn)EV1)進(jìn)行檢測(cè)。本實(shí)驗(yàn)步驟嚴(yán)格按照說(shuō)明書操作進(jìn)行。
1.3分組標(biāo)準(zhǔn)
根據(jù)《支氣管哮喘防治指南》[7]中BA病情嚴(yán)重程度分級(jí)標(biāo)準(zhǔn)將患兒分為輕度組(34例)、中度組(62例)、重度組(24例)。輕度組定義:呼吸困難、喘息、憋悶等癥狀每周至少一次,但小于每天一次,發(fā)作可能影響活動(dòng)和睡眠,PEF變異率為20~30%,F(xiàn)EV1≥80%;中度組定義:每日均有癥狀,影響活動(dòng)和睡眠,PEF變異率gt;30%,F(xiàn)EV1為60~79%;重度組定義:每日均有發(fā)作,體力活動(dòng)受限,嚴(yán)重影響睡眠,PEF變異率gt;30%,F(xiàn)EV1lt;60%。PEF變異率=(最高PEF值-最低PEF值)/最高PEF值×100%。
根據(jù)預(yù)后情況將BA組患兒分為預(yù)后良好組(52例),預(yù)后不良組(68例)。治療2年后患兒不存在癥狀,PEF≥80%,F(xiàn)EV1≥80%為預(yù)后良好;治療2年后患兒依然存在癥狀,影響活動(dòng)和睡眠,PEFlt;80%,F(xiàn)EV1lt;80%為預(yù)后不良。
1.4統(tǒng)計(jì)學(xué)方法
采用SPSS 25.0軟件對(duì)本研究數(shù)據(jù)進(jìn)行統(tǒng)計(jì)學(xué)分析。計(jì)數(shù)資料以例數(shù)(n)和百分比(%)表示,采用χ2檢驗(yàn)。計(jì)量資料以均數(shù)±標(biāo)準(zhǔn)差(x-±s)表示,兩組之間比較用t檢驗(yàn),多組之間比較用單因素方差分析,進(jìn)一步兩兩比較采用SNK-q檢驗(yàn)。利用Pearson相關(guān)性分析法分析預(yù)后不良患兒血清中sCD163、CCL18表達(dá)水平相關(guān)性。多因素Logistic回歸分析各因素對(duì)BA患兒預(yù)后不良的影響。受試者工作特征(receiver operating characteristic,ROC)曲線分析血清中sCD163、CCL18表達(dá)水平對(duì)BA患兒預(yù)后預(yù)測(cè)價(jià)值,通過(guò)Z檢驗(yàn)比較曲線下面積(the area under the ROC curve,AUC)。Plt;0.05表示差異有統(tǒng)計(jì)學(xué)意義。
2結(jié)果
2.1 BA組與對(duì)照組兒童臨床資料比較
兩組兒童在性別、年齡和體質(zhì)量指數(shù)上無(wú)明顯差異(Pgt;0.05),具有可比性。BA組患兒血清中sCD163、CCL18表達(dá)水平高于對(duì)照組,PEF、FEV1低于對(duì)照組,差異有統(tǒng)計(jì)學(xué)意義(t值介于8.082~10.896之間,Plt;0.05),見表1。
2.2 BA患兒血清中sCD163、CCL18表達(dá)水平比較
輕度組、中度組和重度組患兒血清中sCD163、CCL18表達(dá)水平依次升高,差異有統(tǒng)計(jì)學(xué)意義(F值分別為14.378、38.191,Plt;0.05),見表2。
2.3預(yù)后良好組和預(yù)后不良組患兒臨床指標(biāo)比較
預(yù)后良好組和預(yù)后不良組患兒在性別、年齡、體質(zhì)量指數(shù)等基線資料上無(wú)顯著性差異(Pgt;0.05);預(yù)后良好組患兒血清中sCD163、CCL18表達(dá)水平低于預(yù)后不良組,PEF、FEV1高于預(yù)后不良組,差異有統(tǒng)計(jì)學(xué)意義(t值介于5.576~8.295之間,Plt;0.05),見表3。
2.4多因素Logistic回歸分析各因素對(duì)BA患兒預(yù)后的影響
以BA患兒預(yù)后作為因變量(預(yù)后良好為0,預(yù)后不良為1),將PEF、FEV1、患兒血清中sCD163、CCL18表達(dá)水平作為自變量納入Logistic回歸分析,結(jié)果顯示,血清中sCD163、CCL18表達(dá)水平是BA患兒預(yù)后不良的獨(dú)立危險(xiǎn)因素(OR值分別1.587、1.826,Plt;0.05),PEF、FEV1是BA患兒預(yù)后不良的獨(dú)立保護(hù)因素(OR值分別0.527、0.425,Plt;0.05),見表4。
2.5 預(yù)后不良組患兒血清中sCD163、CCL18表達(dá)水平相關(guān)性分析
使用Pearson相關(guān)對(duì)預(yù)后不良組患兒血清中sCD163、CCL18表達(dá)水平進(jìn)行相關(guān)性分析,結(jié)果顯示預(yù)后不良組患兒血清中sCD163、CCL18表達(dá)水平呈正相關(guān)性(r=0.485,Plt;0.001),見圖1。
2.6 BA患兒血清中sCD163、CCL18表達(dá)水平對(duì)預(yù)后的預(yù)測(cè)價(jià)值
使用ROC曲線評(píng)估BA患兒血清sCD163、CCL18表達(dá)水平單獨(dú)及聯(lián)合預(yù)測(cè)對(duì)預(yù)后的價(jià)值,結(jié)果顯示,sCD163預(yù)測(cè)BA患兒預(yù)后不良的AUC為0.825(95%CI:0.752~0.897),其敏感度、特異度分別為72.14%、83.23%,截?cái)嘀禐?4.94U/mL;CCL18預(yù)測(cè)BA患兒預(yù)后不良的AUC為0.841(95%CI:0.774~0.909),其敏感度、特異度分別為73.54%、76.92%,截?cái)嘀禐?40.11ng/L;兩者聯(lián)合預(yù)測(cè)BA患兒預(yù)后不良的AUC為0.906(95%CI:0.856~0.955),其敏感度、特異度分別為64.71%、94.23%。二者聯(lián)合預(yù)測(cè)優(yōu)于血清sCD163、CCL18單獨(dú)預(yù)測(cè)(Z值分別為2.454、2.779,Plt;0.05),見圖2。
3討論
3.1 BA發(fā)病機(jī)制及臨床特點(diǎn)
BA的發(fā)生發(fā)展由多種炎癥細(xì)胞和介質(zhì)參與,是一種慢性氣道炎癥性疾病,臨床表現(xiàn)一般為發(fā)作性咳嗽、胸悶、呼吸性呼吸困難等,給患者帶來(lái)較大的生理性痛苦和精神折磨,BA轉(zhuǎn)歸和預(yù)后也因人而異[8]。兒童由于免疫力較低,呼吸道發(fā)育不完善,發(fā)生BA的概率較高,給學(xué)習(xí)和生活帶來(lái)較大影響。臨床上可通過(guò)PEF、FEV1變化判斷患兒病情控制水平,進(jìn)而評(píng)估患者病情,但是,此方法不能準(zhǔn)確判斷其相關(guān)預(yù)后情況[9]。因此,尋找新的生物標(biāo)記物提高BA預(yù)測(cè)的準(zhǔn)確性,及時(shí)進(jìn)行干預(yù)治療,對(duì)改善患兒預(yù)后具有重要意義。
3.2 sCD163與BA的關(guān)系
sCD163是人體重要的趨化調(diào)節(jié)因子,當(dāng)機(jī)體受到炎癥刺激(細(xì)菌感染、炎癥介質(zhì)等)時(shí)CD163表達(dá)顯著上調(diào)并脫落到組織液或者血液中,sCD163水平顯著上升,大量的單核細(xì)胞、中性粒細(xì)胞等聚集于感染部位,從而促進(jìn)炎癥反應(yīng)[10]。白細(xì)胞介素可刺激巨噬細(xì)胞,使sCD163水平升高,兩者之間存在正反饋?zhàn)饔眉又貦C(jī)體炎癥反應(yīng)[11]。有研究顯示,血清中sCD163在肺相關(guān)疾病和全身炎癥性疾病中發(fā)揮重要作用,如COPD中人肺泡巨噬細(xì)胞中表達(dá)上調(diào),并且隨著病情加重,血清中sCD163水平也不斷上升[12]。另外,既往研究顯示在BA患者血清中sCD163水平顯著高于健康對(duì)照組[13]。本研究結(jié)果也顯示BA患兒血清中sCD163表達(dá)水平顯著高于對(duì)照組,其表達(dá)水平隨著該疾病的嚴(yán)重程度升高而升高。本研究進(jìn)一步分析發(fā)現(xiàn),BA預(yù)后不良患兒血清中sCD163表達(dá)水平也顯著高于預(yù)后良好的BA患兒,并且sCD163表達(dá)水平高是BA患兒預(yù)后不良的獨(dú)立危險(xiǎn)因素。這些結(jié)果表明,sCD163在BA的發(fā)生展過(guò)程中發(fā)揮了重要作用,可作為預(yù)測(cè)BA患兒預(yù)后的潛在生物標(biāo)記物。
3.3 CCL18與BA的關(guān)系
CCL18是一種由巨噬細(xì)胞和樹突狀細(xì)胞產(chǎn)生的靈長(zhǎng)類特異性趨化因子,具有構(gòu)成性表達(dá)和可誘導(dǎo)性表達(dá)作用,可以在不同生理?xiàng)l件下維持免疫系統(tǒng)的穩(wěn)態(tài),血清中高水平的CCL18已被證實(shí)與肺部疾病和慢性炎癥性疾病相關(guān)[14]。2023年王冬梅[15]等研究中顯示,在結(jié)締組織病相關(guān)間質(zhì)性肺病患者血清中CCL18表達(dá)水平較高,并且是患者預(yù)后不良的獨(dú)立危險(xiǎn)因素。在本研究中,BA患兒血清中CCL18表達(dá)水平顯著高于健康兒童,并且與疾病嚴(yán)重程度相關(guān)。進(jìn)一步分析發(fā)現(xiàn),血清中CCL18表達(dá)水平高是預(yù)后不良的獨(dú)立危險(xiǎn)因素,與sCD163一致,兩者在預(yù)后不良的BA患兒中表達(dá)趨勢(shì)正相關(guān)。本研究進(jìn)一步分析了血清中sCD163與CCL18對(duì)BA患兒預(yù)后不良的預(yù)測(cè)價(jià)值,結(jié)果表明sCD163與CCL18聯(lián)合預(yù)測(cè)的臨床價(jià)值更高。這可能是由于M2巨噬細(xì)胞表達(dá)CD163并產(chǎn)生抗炎因子(白介素-10、轉(zhuǎn)化生長(zhǎng)因子-β)和趨化因子(CCL5、CCL17、CCL18等)以促進(jìn)疾病進(jìn)展。
綜上所述,BA患兒血清中sCD163與CCL18表達(dá)水平隨著病情嚴(yán)重程度的升高而升高,兩者聯(lián)合預(yù)測(cè)BA患兒預(yù)后具有較高的價(jià)值,可作為生物標(biāo)志物。但是sCD163與CCL18在BA患兒預(yù)后中的具體調(diào)控機(jī)制尚不清晰,需做進(jìn)一步的研究。
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[專業(yè)責(zé)任編輯:侯 偉]
[中文編輯:郭樂倩;英文編輯:楊周岐]