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Expression of fibulin-5 in the skin of patients with rectal prolapse.

AbstractAIM:
Components of connective tissue other than collagen have been found to be involved in patients with rectal prolapse. The organization of elastic fibres differs between controls and subsets of patients with rectal prolapse, and their importance for maintaining the structural and functional integrity of the pelvic floor has been demonstrated in transgenic mice, with animals which have a null mutation in fibulin-5 (Fbln5(i/i)) developing prolapse. This study aimed to compare fibulin-5 expression in the skin of patients with and without rectal prolapse.
METHOD:
Between January 2013 and February 2014, skin specimens were obtained during surgery from 20 patients with rectal prolapse and from 21 without prolapse undergoing surgery for other indications. Fibroblasts from the skin were cultured and the level of fibulin-5 expression was determined on cultured fibroblasts, isolated from these specimens by quantitative real-time polymerase chain reaction. Immunohistochemistry was performed on fixed tissue specimens to assess fibulin-5 expression.
RESULTS:
Fibulin-5 mRNA expression and fibulin-5 staining intensity were significantly lower in young male patients with rectal prolapse compared with age-matched controls [fibulin-5 mean ± SD mRNA relative units, 1.1 ± 0.41 vs 0.53 ± 0.22, P = 0.001; intensity score, median (range), 2 (0-3) vs 1 (0-3), P = 0.05]. There were no significant differences in the expression of fibulin-5 in women with rectal prolapse compared with controls.
CONCLUSION:
Fibulin-5 may be implicated in the aetiology of rectal prolapse in a subgroup of young male patients.
AuthorsH M Joshi, M P Gosselink, E A Smyth, R Hompes, C Cunningham, I Lindsey, J Urban, O M Jones
JournalColorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland (Colorectal Dis) Vol. 17 Issue 11 Pg. 996-1001 (Nov 2015) ISSN: 1463-1318 [Electronic] England
PMID25891043 (Publication Type: Journal Article)
CopyrightColorectal Disease © 2015 The Association of Coloproctology of Great Britain and Ireland.
Chemical References
  • Extracellular Matrix Proteins
  • FBLN5 protein, human
  • RNA, Messenger
Topics
  • Adult
  • Aged
  • Aged, 80 and over
  • Cells, Cultured
  • Extracellular Matrix Proteins (biosynthesis, genetics)
  • Female
  • Gene Expression Regulation
  • Humans
  • Immunohistochemistry
  • Male
  • Middle Aged
  • RNA, Messenger (genetics)
  • Real-Time Polymerase Chain Reaction
  • Rectal Prolapse (genetics, metabolism)
  • Skin (metabolism, pathology)

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