Article Text

Download PDFPDF

The arrest of intestinal epithelial `turnover' by the use of x-irradiation
  1. G. Wiernik,
  2. R. G. Shorter,
  3. B. Creamer


    Mitotic activity and hence cell turnover has been abolished by x-irradiation with 1,000 r. in segments of the rat's gut. The whole stomach, the ascending colon, and 5 cm. of jejunum and ileum were irradiated and the changes observed histologically up to three days. Cessation of cell turnover in the small intestine is followed by cell death and desquamation within 24 hours, leading to denudation of the epithelium and collapse of villous structure. The pylorus and colon showed similar but less marked changes. In contrast the fundus and body of the stomach were unaffected by the absence of mitosis over a period of three days. It is concluded that cell turnover is, in part, necessary to maintain the mucosal structure, particularly the villous pattern in the small intestine.

    Statistics from

    Request Permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.