TY - JOUR A1 - Gfrörer, Stefan A1 - Fiegel, Henning C. A1 - Ramachandran, Priya A1 - Rolle, Udo A1 - Metzger, Roman T1 - Changes of smooth muscle contractile filaments in small bowel atresia T2 - World journal of gastroenterology : WJG N2 - AIM: To investigate morphological changes of intestinal smooth muscle contractile fibres in small bowel atresia patients. METHODS: Resected small bowel specimens from small bowel atresia patients (n = 12) were divided into three sections (proximal, atretic and distal). Standard histology hematoxylin-eosin staining and enzyme immunohistochemistry was performed to visualize smooth muscle contractile markers α-smooth muscle actin (SMA) and desmin using conventional paraffin sections of the proximal and distal bowel. Small bowel from age-matched patients (n = 2) undergoing Meckel's diverticulum resection served as controls. RESULTS: The smooth muscle coat in the proximal bowel of small bowel atresia patients was thickened compared with control tissue, but the distal bowel was unchanged. Expression of smooth muscle contractile fibres SMA and desmin within the proximal bowel was slightly reduced compared with the distal bowel and control tissue. There were no major differences in the architecture of the smooth muscle within the proximal bowel and the distal bowel. The proximal and distal bowel in small bowel atresia patients revealed only minimal differences regarding smooth muscle morphology and the presence of smooth muscle contractile filament markers. CONCLUSION: Changes in smooth muscle contractile filaments do not appear to play a major role in postoperative motility disorders in small bowel atresia. KW - Enteric nervous system KW - Motility disorder KW - Small bowel atresia KW - Smooth muscle Y1 - 2012 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/31211 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-312118 SN - 2219-2840 SN - 1007-9327 N1 - WJG is an international, peer-reviewed, Open-Access, online journal. Articles published by this journal are distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. VL - 18 IS - 24 SP - 3099 EP - 3104 PB - WJG Press CY - Beijing ER -