Aberrant Distributions of Collagen I, III, and IV in Hirschsprung Disease.

Abstract

BACKGROUND:

Hirschsprung disease (HSCR) is the most common congenital gut motility disorder, involving a severe anomaly of the enteric nervous system, and is characterized by functional intestinal obstruction due to lack of intrinsic innervation (aganglionosis) in the distal bowel.

OBJECTIVE:

The aim of this study was to examine the distribution patterns of collagens I (Col I), III (Col III), and IV (Col IV) in the enteric nervous system of HSCR patients, to determine whether or not collagen levels are altered in the aganglionic bowel.

METHODS:

We measured the expression levels of Col I, Col III, and Col IV in colonic muscle from 129 children with HSCR. The localizations of the 3 collagens and myenteric ganglia were assessed morphologically by immunofluorescence staining. western blots and real-time fluorescence quantitative polymerase chain reaction were performed to examine the relative levels of these collagens in aganglionic, transitional, and ganglionic colon segments.

RESULTS:

Immunoreactivities of Col I and Col III were high around and within myenteric ganglia in the ganglionic segment, moderate in the transitional segment, and weak in the aganglionic segment. Col IV immunoreactivity showed the opposite pattern, being lowest in the ganglionic segment and highest in the aganglionic segment.

CONCLUSION:

Col I and Col III are decreased and Col IV is increased in the distal colon of patients with HSCR.

• Authors: Ni Gao, Jian Wang, Qiangye Zhang, Tingting Zhou, Weijing Mu, Peimin Hou, Dongming Wang, Xiaona Lv, Aiwu Li
• Journal: Journal of pediatric gastroenterology and nutrition (J Pediatr Gastroenterol Nutr) Vol. 70 Issue 4 Pg. 450-456 (04 2020) ISSN: 1536-4801 [Electronic] United States
• PMID: 31939867 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Topics

• Blotting, Western
• Child
• Colon
• Hirschsprung Disease (genetics)
• Humans
• Infant
• Intestines
• Real-Time Polymerase Chain Reaction