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Butyrate fermentation is a process that produces butyric acid via anaerobic bacteria. This process occurs commonly in clostridia which can be isolated from many anaerobic environments such as mud, fermented foods , and intestinal tracts or feces. [ 1 ]
Tributyrin is a stable and rapidly absorbed prodrug of butyric acid which enhances antiproliferative effects of dihydroxycholecalciferol in human colon cancer cells. [ 3 ] References
In particular, butyrate inhibits colonic tumor cells and stimulates proliferation of healthy colonic epithelial cells. [ 70 ] [ 71 ] The explanation why butyrate is an energy source for normal colonocytes and induces apoptosis in colon cancer cells, is the Warburg effect in cancer cells, which leads to butyrate not being properly metabolized.
Acetate, propionate and butyrate are the three most common SCFAs. [3] Butyrate is particularly important for colon health because it is the primary energy source for colonocytes (the epithelial cells of the colon). [1] [2] The liver can use acetate for energy. [5]
The fermentation of resistant starch produces short-chain fatty acids, including acetate, propionate, and butyrate and increased bacterial cell mass. The short-chain fatty acids are produced in the large intestine where they are rapidly absorbed from the colon, then are metabolized in colonic epithelial cells, liver or other tissues.
The diet in the tropics tended [when?] to depend more heavily on plant foods, while the diet at higher latitudes tended more towards animal products. Analyses of postcranial and cranial remains of humans and animals from the Neolithic, along with detailed bone-modification studies, have shown that cannibalism also occurred among prehistoric humans.
By combining a new treatment still in clinical trials with diet, researchers were able to starve the cancer cells in an animal model of pancreatic cancer, and the tumors shrunk.
Indole-3-carbinol induces a G1 growth arrest of human reproductive cancer cells. [9] This is potentially relevant to the prevention and treatment of cancer, as the G1 phase of cell growth occurs early in the cell life cycle, and, for most cells, is the major period of cell cycle during its lifespan.