Comparison of rectal mucosal proliferation measured by proliferating cell nuclear antigen (PCNA) immunohistochemistry and whole crypt dissection.

Published

Journal Article

Rectal mucosal proliferation has been promoted as an intermediate marker for risk of colorectal neoplasia. Proliferating cell nuclear antigen (PCNA) immunohistochemistry has become a standard method to measure cell proliferation. Whole-crypt dissection may provide a technically simpler method for determining proliferation within an entire crypt. We conducted a study to assess the reliability (reproducibility) of whole-crypt dissection in 10 subjects. Reliability of whole-crypt dissection with the subject as the unit of observation was excellent. The intraclass correlation coefficient for subjects was 0.93. Biopsy-to-biopsy reliability was lower (r=0.86) and crypt-to-crypt reliability lower still (r = 0.35). There was poor correlation between measures of proliferation index using the two techniques (Kendall's tau = 0.13; P = 0.08). Compartment analysis based on the percentage of the total number of labeled cells appearing in each crypt quartile also did not demonstrate a significant correlation between the two measures. We conclude that PCNA labeling index and whole-crypt mitotic count are not comparable measures of rectal mucosal proliferation.

Full Text

Duke Authors

Cited Authors

  • Murray, SC; Sandler, RS; Keku, TO; Lyles, CM; Millikan, RC; Bangdiwala, SI; Kupper, LL; Jiang, W; Ulshen, MH

Published Date

  • October 1995

Published In

Volume / Issue

  • 4 / 7

Start / End Page

  • 715 - 720

PubMed ID

  • 8672987

Pubmed Central ID

  • 8672987

International Standard Serial Number (ISSN)

  • 1055-9965

Language

  • eng

Conference Location

  • United States