To examine the difference in the methylation status in normal colon mucosa between the proximal and distal colon, in relation to the correlation between the methylation status of normal mucosa and characteristics of neoplasia.
These data validate and add to the work by Albuquerque et al 12 demonstrating that the optimal tumourigenic level of Wnt signal varies within the different regions of the colon in sporadic tumours as well as between the colon and small intestine in FAP (figure 4, online supplementary tables 3 and 4).
The study, published in the Journal of the American Medical Association, assessed the relationship between diet and cancers of the colon and rectum (the last part of the colon) in 150,000 individuals.
Should there be a colon in there?
However in NPY−/− group there was no significant differences in colon length between DSS and control mice.
This possible connection in colon cancer between different types of APC mutations, cell cycle control gene expression, CIN and prognosis warrants further investigation.
The difference of susceptibility to tumorigenesis between WT mice and NPC1L1−/− mice does not appear to be caused by colon length because no significant difference in colon length between the two was detected.
Garrity et al. reported only a weak correlation in colon cancer between MK167 levels and S-phase (the standard measure of proliferation) [ 32], indicating that expression of this gene may not signify rapidly dividing tumors.
Pyrosequencing of 16S rRNA amplification products from crop, gizzard, stomach, duodenum, ileum, caecum and colon DNA resulted in between 2,332 and 25,997 independent sequences.
A similar correlation also was reported in human colon cancer between ILK expression, activation of β-catenin, and tumor progression in vivo [ 16].
