Folic Acid Supplementation Adversely Affects Chemosensitivity of Colon Cancer Cells to 5-fluorouracil

Folic acid (FA) fortification and widespread supplemental use have significantly increased folate status in North America. Furthermore, >50% of colorectal cancer patients use FA supplement. The increased folate status may interfere with cancer chemotherapy. Cell proliferation, degree of necrosis, and expression of the selected genes did not significantly differ by the supplemental levels of FA. […]

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