AIM: To investigate whether the expression of platelet-derived growth factor receptor-α-positive (PDGFRα<sup>+</sup>)-cells is altered in Hirschsprung’s disease (HD).MET...AIM: To investigate whether the expression of platelet-derived growth factor receptor-α-positive (PDGFRα<sup>+</sup>)-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<sup>+</sup>-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<sup>+</sup>-cells within the mucosa, myenteric plexus and smooth muscle in normal controls, with a marked reduction in PDGFRα<sup>+</sup>-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<sup>+</sup>-cells in both the aganglionic and ganglionic HD bowel may contribute to the motility dysfunction in HD.展开更多
基金Supported by National Children’s Research Centre/Children’s Medical Research Foundation,Ireland
文摘AIM: To investigate whether the expression of platelet-derived growth factor receptor-α-positive (PDGFRα<sup>+</sup>)-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<sup>+</sup>-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<sup>+</sup>-cells within the mucosa, myenteric plexus and smooth muscle in normal controls, with a marked reduction in PDGFRα<sup>+</sup>-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<sup>+</sup>-cells in both the aganglionic and ganglionic HD bowel may contribute to the motility dysfunction in HD.
