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Journal Article
Research Support, Non-U.S. Gov't
Deficiency of platelet-derived growth factor receptor-α-positive cells in Hirschsprung's disease colon.
World Journal of Gastroenterology : WJG 2016 March 29
AIM: To investigate whether the expression of platelet-derived growth factor receptor-α-positive (PDGFRα(+))-cells is altered in Hirschsprung's disease (HD).
METHODS: HD tissue specimens (n = 10) were collected at the time of pull-through surgery, while colonic control samples were obtained at the time of colostomy closure in patients with imperforate anus (n = 10). Immunolabelling of PDGFRα(+)-cells was visualized using confocal microscopy to assess the distribution of these cells, while Western blot analysis was undertaken to quantify PDGFRα protein expression.
RESULTS: Confocal microscopy revealed PDGFRα(+)-cells within the mucosa, myenteric plexus and smooth muscle in normal controls, with a marked reduction in PDGFRα(+)-cells in the HD specimens. Western blotting revealed high levels of PDGFRα protein expression in normal controls, while there was a striking decrease in PDGFRα protein expression in the HD colon.
CONCLUSION: These findings suggest that the altered distribution of PDGFRα(+)-cells in both the aganglionic and ganglionic HD bowel may contribute to the motility dysfunction in HD.
METHODS: HD tissue specimens (n = 10) were collected at the time of pull-through surgery, while colonic control samples were obtained at the time of colostomy closure in patients with imperforate anus (n = 10). Immunolabelling of PDGFRα(+)-cells was visualized using confocal microscopy to assess the distribution of these cells, while Western blot analysis was undertaken to quantify PDGFRα protein expression.
RESULTS: Confocal microscopy revealed PDGFRα(+)-cells within the mucosa, myenteric plexus and smooth muscle in normal controls, with a marked reduction in PDGFRα(+)-cells in the HD specimens. Western blotting revealed high levels of PDGFRα protein expression in normal controls, while there was a striking decrease in PDGFRα protein expression in the HD colon.
CONCLUSION: These findings suggest that the altered distribution of PDGFRα(+)-cells in both the aganglionic and ganglionic HD bowel may contribute to the motility dysfunction in HD.
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