






背景:已有研究發現中性粒細胞明膠酶相關脂質運載蛋白(NGAL)在克羅恩病(CD)進展中發揮了重要作用,可能成為預測CD活動性、判斷疾病嚴重程度、評估治療反應以及預后監測的潛在生物學標志物。然而,其對克羅恩病肛瘺(pfCD)的診斷價值目前尚不清楚。目的:探討活動性pfCD患者的血清NGAL水平及其診斷價值。方法:納入2021年7月—2023年6月上海中醫藥大學附屬龍華醫院診斷為pfCD的患者66例,其中活動性36例,非活動性30例。分別應用克羅恩病活動指數(CDAI)和肛周疾病活動指數(PDAI)評分評估疾病和肛瘺的活動性。比較兩組患者的血清NGAL、糞鈣衛蛋白(FC)、C反應蛋白(CRP)、紅細胞沉降率(ESR)以及CDAI、PDAI評分,并分析活動性pfCD患者NGAL水平與其他指標的相關性。應用ROC曲線分析血清NGAL、FC、CRP和ESR對活動性pfCD的臨床診斷價值。結果:活動性pfCD患者血清NGAL、FC、CRP、ESR以及CDAI、PDAI評分均顯著高于非活動性pfCD患者(P均lt;0.001)。活動性pfCD患者NGAL水平與FC(r=0.64,Plt;0.001)、CRP(r=0.55,Plt;0.001)、ESR(r=0.53,Plt;0.001)、CDAI評分(r=0.59,Plt;0.001)和PDAI評分(r=0.54,Plt;0.001)均呈正相關。ROC曲線分析顯示,NGAL、FC、CRP、ESR診斷活動性pfCD的最佳截斷值分別為220.5 μg/L、146.0 μg/g、7.9 mg/L和23.5 mm/h,曲線下面積分別為0.922(95% CI:0.850~0.995)、0.888(95% CI:0.806~0.970)、0.853(95% CI:0.763~0.944)和0.830(95% CI:0.731~0.930)。結論:血清NGAL水平與pfCD的疾病活動性有關,可作為活動性pfCD臨床診斷的無創生物學標志物。
關鍵詞 中性粒細胞明膠酶相關脂質運載蛋白; Crohn病; 肛瘺; 診斷
Diagnostic Value of NGAL in Patients With Active Perianal Fistulizing Crohn′s Disease MA Kai, LI Yikun, XU Simin, WENG Feiyang, YAO Yibo, WANG Chen. Department of Anal and Intestinal Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai (200032)
Correspondence to: WANG Chen, Email: wangchen_longhua@163.com
Background: Previous studies have proved that neutrophil gelatinase?associated lipocalin (NGAL) plays an important role in the progression of Crohn′s disease (CD), and may serve as a potential biomarker for disease activity prediction, severity assessment, treatment response evaluation and prognosis monitoring. However, the diagnostic value of NGAL in perianal fistulizing Crohn′s disease (pfCD) is still unclear. Aims: To investigate the serum level of NGAL and its diagnostic value in patients with active pfCD. Methods: A total of 66 patients diagnosed as pfCD from July 2021 to June 2023 at Longhua Hospital, Shanghai University of Traditional Chinese Medicine were enrolled, including 36 active pfCD patients and 30 inactive pfCD patients. The disease activity and perianal fistula activity were assessed by Crohn's disease activity index (CDAI) and perianal disease activity index (PDAI), respectively. Serum NGAL, fecal calprotectin (FC), C?reactive protein (CRP), erythrocyte sedimentation rate (ESR), as well as CDAI score and PDAI score were compared between the active and inactive pfCD patients, and the correlations of NGAL with the other parameters in active pfCD patients were analyzed. ROC curve was drawn to evaluate the values of serum NGAL, FC, CRP and ESR for diagnosis of active pfCD. Results: The serum NGAL, FC, CRP, ESR, CDAI score and PDAI score in active pfCD patients were significantly higher than those in inactive pfCD patients (all Plt;0.001). NGAL was positively correlated with FC (r=0.64, Plt;0.001), CRP (r=0.55, Plt;0.001), ESR (r=0.53, Plt;0.001), CDAI score (r=0.59, Plt;0.001) and PDAI score (r=0.54, Plt;0.001) in active pfCD patients. The optimal cut?off values of NGAL, FC, CRP and ESR were 220.5 μg/L, 146.0 μg/g, 7.9 mg/L and 23.5 mm/h, respectively, for the diagnosis of active pfCD, and the area under the curve were 0.922 (95% CI: 0.850?0.995), 0.888 (95% CI: 0.806?0.970), 0.853 (95% CI: 0.763?0.944) and 0.830 (95% CI: 0.731?0.930), respectively. Conclusions: Serum NGAL level is associated with the disease activity of pfCD, and can be used as a non?invasive biomarker for the clinical diagnosis of active pfCD.
Key words Neutrophil Gelatinase?Associated Lipocalin; Crohn Disease; Perianal Fistula; Diagnosis
克羅恩病(Crohn′s disease, CD)是一種病因不明、慢性非特異性腸道炎癥性疾病,可累及口腔至肛門的任何部位。流行病學研究發現10%~15%的患者確診CD時已存在肛周病變,而CD確診10年后,肛周病變的累積發病率高達32%[1?2]。其中肛瘺是CD最常見的肛周病變,也稱為克羅恩病肛瘺(perianal fistulizing Crohn′s disease, pfCD),瘺管的出現多提示病情進展[3]。pfCD臨床多伴有反復肛周腫痛、破潰流膿等癥狀,瘺管反復發作、長期不愈合極大地影響了患者的健康水平,降低了患者的生活質量[4]。……