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 23 January 2018

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News

Novel serological biomarker for penetrating Crohn's disease

July's issue of the Alimentary Pharmacology & Therapeutics investigates misbalance in type III collagen formation as a novel serological biomarker for penetrating Crohn's disease.

News image

Misbalances in extracellular matrix turnover are key factors in the development of stricturing, and penetrating Crohn's disease.

Dr Olinga and colleagues from the Netherlands determined whether serological markers for collagen formation and degradation could serve as biomarkers for complications of Crohn's disease.

Serum biomarkers for type I, III, V and VI collagen formation (P1NP, Pro-C3, Pro-C5, Pro-C6) and matrix metalloproteinase mediated degradation (C1M, C3M, C5M and C6M) were measured in a retrospective, single centre cohort of 112 patients with Crohn's disease in the terminal ileum, and 24 healthy controls.

Active inflammation was defined as CRP more than 5 mg/L.

Active inflammation was defined as CRP more than 5 mg/L
Alimentary Pharmacology & Therapeutics

C3M and Pro-C5 levels were higher in penetrating vs nonpenetrating/nonstricturing and stricturing disease.

The researchers found that C1M, C3M, and Pro-C5 levels were higher in patients with active inflammation vs without active inflammation.

The team observed that pro-C3/C3M-ratios were best to differentiate between penetrating vs nonstricturing/nonpenetrating and stricturing disease with area under the curves of 0.8 and 0.75, respectively.

Dr Olinga's team concludes, "Serological biomarkers show that penetrating Crohn's disease is characterised by increased matrix metalloproteinase-9 degraded type III collagen and formation of type V collagen."

"Active inflammation in Crohn's disease is characterised by increased formation of type V collagen and increased matrix metalloproteinase mediated breakdown of type I, III collagen."

"Pro-C3/C3M ratios are superior in differentiating between penetrating Crohn's disease vs inflammatory and stricturing Crohn's disease."

Aliment Pharmacol Ther 2017: 46(1): 26–39
13 June 2017

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