Article (Scientific journals)
Neutrophil gelatinase B-associated lipocalin and matrix metalloproteinase-9 complex as a surrogate serum marker of mucosal healing in ulcerative colitis.
de Bruyn, Magali; Arijs, Ingrid; Wollants, Willem-Jan et al.
2014In Inflammatory Bowel Diseases, 20 (7), p. 1198-207
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Abstract :
[en] BACKGROUND: The current standard for the assessment of mucosal healing after therapy in inflammatory bowel diseases is endoscopy. However, a high need exists for noninvasive, accurate surrogate markers. METHODS: In 2 independent cohorts, levels of serum neutrophil gelatinase B-associated lipocalin and matrix metalloproteinase-9 complex (NGAL-MMP-9) from patients with active ulcerative colitis (UC) before and after first treatment with infliximab and from healthy controls (HC) were determined with zymography and sandwich enzyme-linked immunosorbent assay. The response to infliximab was defined as complete mucosal healing (Mayo endoscopic subscore 0-1) at control endoscopy. Data were analyzed with SPSS, and P values <0.05 were considered significant. RESULTS: In cohort 1 (n = 66; median age, 30 yr; 38% female), serum NGAL-MMP-9 levels significantly increased at baseline in UC patients versus HC (103.8 versus 42.4 ng/mL; P < 0.0001), whereas 55% of the patients had normal C-reactive protein levels. NGAL-MMP-9 levels significantly decreased after therapy in UC responders (from 116.3 ng/mL to 32.0 ng/mL; P < 0.0001) and in nonresponders (from 94.7 ng/mL to 54.1 ng/mL; P = 0.047). In cohort 2 (n = 132; median age, 39 yr; 53% female), NGAL-MMP-9 levels increased at baseline in active UC patients versus HC (86.5 versus 60.4 ng/mL; P = 0.10), whereas 45% of the patients had normal C-reactive protein levels. NGAL-MMP-9 levels significantly decreased after therapy in responders (from 87.5 ng/mL to 16.3 ng/mL; P < 0.0001) but not in nonresponders (from 82.7 ng/mL to 57.8 ng/mL; P = 0.19). After pooling the data, a cutoff value of 97.7 ng/mL for NGAL-MMP-9 complex was determined to predict complete mucosal healing with high specificity (91%). CONCLUSIONS: Serum NGAL-MMP-9 is suggested as a new surrogate marker for the assessment of mucosal healing in UC patients treated with infliximab.
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
de Bruyn, Magali
Arijs, Ingrid
Wollants, Willem-Jan
Machiels, Kathleen
Van Steen, Kristel  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Bioinformatique
Van Assche, Gert
Ferrante, Marc
Rutgeerts, Paul
Vermeire, Severine
Opdenakker, Ghislain
Language :
English
Title :
Neutrophil gelatinase B-associated lipocalin and matrix metalloproteinase-9 complex as a surrogate serum marker of mucosal healing in ulcerative colitis.
Publication date :
2014
Journal title :
Inflammatory Bowel Diseases
ISSN :
1078-0998
eISSN :
1536-4844
Publisher :
Lippincott Williams & Wilkins, United States - Maryland
Volume :
20
Issue :
7
Pages :
1198-207
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 March 2015

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