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Aim The activation of Hedgehog signaling, which is critical to normal mammalian gastrointestinal development, is implicated in the development of various tumors, including colorectal cancer. In the pancreas, a precursor lesion overexpresses the Sonic hedgehog (Shh) when compared with normal tissue and cancer. The present study was designed to investigate Shh related protein expression in hyperplastic...
A superoxide-producing enzyme, NADPH oxidase 1 (Nox1), dominantly expressed in the colon, is implicated in the pathogenesis of colon cancer. Immunohistochemistry showed that Nox1 was constitutively expressed in surface mucous cells. Adenomas and well differentiated adenocarcinomas up-regulated Nox1 expression. Ki-67-negative, well differentiated tumor cells contained abundant Nox1, whereas Ki-67-positive,...
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