What does this research mean for the field?

Periostin levels are higher in pediatric patients with Crohn's disease than in those with ulcerative colitis, and periostin correlates inversely with disease activity markers. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research examines the roles of periostin, TGF-β, and SLUG in pediatric inflammatory bowel disease.

January 22, 2026Open Access

Analysis of Periostin, TGF-β, and SLUG Expression in Inflammatory Bowel Disease in Pediatric Patients and Their Clinical Implications

Key Result

Periostin levels were higher in pediatric patients with Crohn's disease than in those with ulcerative colitis, correlating inversely with disease activity markers.

Key Points

This research examines the roles of periostin, TGF-β, and SLUG in pediatric inflammatory bowel disease.
Analyzed intestinal biopsies from 33 pediatric patients with IBD and 10 healthy controls.
Performed immunohistochemical staining to assess protein expression.
Used quantitative PCR to evaluate POSTN, TGF-β1, and SNAI2 expression.
Correlated findings with fecal calprotectin and disease activity indices.
Increased expression of periostin, TGF-β, and SLUG observed in pediatric IBD patients compared to controls.
Periostin levels were higher in Crohn’s disease patients than those with ulcerative colitis.
All markers showed positive correlations at both mRNA and protein levels.
Periostin exhibited an inverse correlation with fecal calprotectin and PCDAI scores.

Structured PICO

Does the expression of periostin, TGF-β, and SLUG correlate with disease activity in pediatric inflammatory bowel disease?

Population

33 pediatric patients with inflammatory bowel disease (11 Crohn's disease, 22 ulcerative colitis) and 10 healthy controls

Comparator

Healthy controls

Outcome

Expression of periostin, TGF-β, and SLUG in intestinal biopsiessurrogate

Periostin, TGF-β, and SLUG are elevated in pediatric IBD and may serve as biomarkers of disease activity and mucosal healing.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

Background: Pediatric inflammatory bowel disease (pIBD), including Crohn’s disease (CD) and ulcerative colitis (UC), is characterized by chronic intestinal inflammation and fibrosis. Identifying molecular mediators involved in inflammation and tissue repair is critical for improving disease management. Objective: To examine the expression of periostin, TGF-β, and SLUG in pIBD and assess their potential roles in intestinal inflammation, fibrosis, and mucosal healing. Methods: Intestinal biopsies from 33 pediatric patients (11 CD, 22 UC) and 10 healthy controls were analyzed immunohistochemically. Quantitative PCR evaluated POSTN, TGF-β1, and SNAI2 expression in 22 patients and 6 controls. Correlations with fecal calprotectin, the Pediatric Crohn’s Disease Activity Index (PCDAI), and the Pediatric Ulcerative Colitis Activity Index (PUCAI) were determined. Results: Periostin, TGF-β, and SLUG expression were significantly increased in pIBD compared with controls. Periostin levels were higher in CD than in UC. All markers correlated positively at mRNA and protein levels. Notably, periostin showed an inverse correlation with fecal calprotectin and PCDAI scores. Conclusions: Periostin, TGF-β, and SLUG may represent biomarkers of pIBD activity. Periostin appears to mediate inflammation and promote mucosal fibrosis or repair, and its inverse association with disease activity suggests a potential therapeutic role in pIBD.

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